Internal Use Only

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SERVICE MANUAL DVD Mini Hi-Fi System

SERVICE MANUAL
MODEL: MDD105 (MDS105V)

MODEL: MDD105 (MDS105V)

CAUTION
BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS”
IN THIS MANUAL.

P/NO : AFN73972690 JUNE, 2010

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 CONTENTS

SECTION 1 ........ SUMMARY

SECTION 2 ........ CABINET & MAIN CHASSIS
SECTION 3 ........ ELECTRICAL
SECTION 4 ........ REPLACEMENT PARTS LIST

1-1

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 SECTION 1
SUMMARY

CONTENTS

SERVICING PRECAUTIONS ................................................................................................................... 1-3

ESD PRECAUTIONS .................................................................................................................................. 1-5

SERVICE INFORMATION FOR EEPROM .......................................................................................... 1-6

SOFTWARE UPGRADE PROCESS ..................................................................................................... 1-7

SPECIFICATIONS ....................................................................................................................................... 1-8

1-2

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 SERVICING PRECAUTIONS
NOTES REGARDING HANDLING OF THE PICK-UP
1. Notes for transport and storage
1) The pick-up should always be left in its conductive bag until immediately prior to use.
2) The pick-up should never be subjected to external pressure or impact.
2. Repair notes
1) The pick-up incorporates a strong magnet, and so should never be brought close to magnetic materials.
2) The pick-up should always be handled correctly and carefully, taking care to avoid external pressure and

Storage in conductive bag Drop impact

impact. If it is subjected to strong pressure or impact, the result may be an operational malfunction and/or
damage to the printed-circuit board.
3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reason
the adjustment point and installation screws should absolutely never be touched.
4) Laser beams may damage the eyes!
Absolutely never permit laser beams to enter the eyes!
Also NEVER switch ON the power to the laser output part (lens, etc.) of the pick-up if it is damaged.
5) Cleaning the lens surface
If there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as used

NEVER look directly at the laser beam, and don’t allow

contact with fingers or other exposed skin.

for camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, a cotton
swab should be used, taking care not to distort lens.
6) Never attempt to disassemble the pick-up.
Spring has excess pressure. If the lens is extremely dirty, apply isopropyl alcohol to the cotton swab.

Pressure
Magnet
Pressure

How to hold the pick-up

Cotton swab

Conductive Sheet

(Do not use any other liquid cleaners, because they will damage the lens.) Take care not to use too much
of this alcohol on the swab, and do not allow the alcohol to get inside the pick-up.

1-3

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 NOTES REGARDING COMPACT DISC PLAYER REPAIRS
1. Preparations
1) Compact disc players incorporate a great many ICs as well as the pick-up (laser diode). These components
are sensitive to, and easily affected by, static electricity. If such static electricity is high voltage, components
can be damaged, and for that reason components should be handled with care.
2) The pick-up is composed of many optical components and other high-precision components. Care must be
taken, therefore, to avoid repair or storage where the temperature or humidity is high, where strong magnet-
ism is present, or where there is excessive dust.
2. Notes for repair
1) Before replacing a component part, first disconnect the power supply lead wire from the unit
2) All equipment, measuring instruments and tools must be grounded.
3) The workbench should be covered with a conductive sheet and grounded.
When removing the laser pick-up from its conductive bag, do not place the pick-up on the bag. (This is
because there is the possibility of damage by static electricity.)
4) To prevent AC leakage, the metal part of the soldering iron should be grounded.
5) Workers should be grounded by an armband (1 MΩ)
6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to prevent stat-
ic electricity changes in the clothing to escape from the armband.
7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin.
Armband

Resistor
(1 MΩ)
Resistor
Conductive
(1 MΩ)
Sheet

1-4

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 ESD PRECAUTIONS
Electrostatically Sensitive Devices (ESD)
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components
commonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integrated
circuits and some field-effect transistors and semiconductor chip components. The following techniques should
be used to help reduce the incidence of component damage caused by static electricity.
1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off
any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a
commercially available discharging wrist strap device, which should be removed for potential shock reasons
prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive surface
such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices.
4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static" can
generate electrical charges sufficient to damage ESD devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESD
devices.
6. Do not remove a replacement ESD device from its protective package until immediately before you are
ready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together by
conductive foam, aluminum foil or comparable conductive materials).
7. Immediately before removing the protective material from the leads of a replacement ESD device, touch the
protective material to the chassis or circuit assembly into which the device will by installed.

CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALL OTHER
SAFETY PRECAUTIONS.

8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless motion
such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate
static electricity sufficient to damage an ESD device).

CAUTION. GRAPHIC SYMBOLS

THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN EQUILATERAL TRIANGLE, IS

INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED
“DANGEROUS VOLTAGE” THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF
ELECTRIC SHOCK.

THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE

SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE
LITERATURE.

1-5

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 SERVICE INFORMATION FOR EEPROM

POWER ON

FLD no disc status

Remote control ‘2’ + Front ‘STOP’ DETECT NEW EEPROM

push same timing during 5s (OPTION EDIT SCREEN)

NAME HEX

OPT 0 00
FLD ‘OP-0…. OPT 1 00
OPT 2 00
OPT 3 00
OPT 4 00
Move to appropriate position OPT 5 00
and make changes OPT 6 00
with Rmc ‘skip, mode, play’ key. OPT 7 00
OPT 8 00
OPT 9 00

Press STOP key

FLD ‘write ok’

Remote control ‘Fwd skip’ +

Front ‘STOP’ push same timing

FLD ‘E2P CLR’

Completed

1-6

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 SOFTWARE UPGRADE PROCESS
Important Notice :
When ugrade the software running. Do not shunt down the power, it tmay damage the unit.

1. MICOM UPGRADE
1) Copy the software file into USB flash, as the file name is LG_MDD105_XXXXXXX.HE

2) Insert the USB flash into USB host.

3) Set Function to USB position.

Appear onto VFD
UPGRADE

4) After finish, Set will automatically power off.

2. FLASH MEMORY UPGRADE

1) Copy the software file into USB flash, As the file name is LG_MDD105_XXXXXXX.RO

2) Insert the USB flash into USB host.

3) Set Function to USB position.

Appear onto VFD
CODE 00
NO USB

4) Manual Power off and Power on is finish.

1-7

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 SPECIFICATIONS
• GENERAL
Power supply Refer to main label.
Power consumption Refer to main label.
Net Weight 5.3 kg
External dimensions (W x H x D) ( 272 x 336 x 352 ) mm
Operating conditions Temperature 5 °C to 35 °C, Operation status: Horizontal
Operating humidity 5 % to 85 %
Laser Semiconductor laser, wavelength, 760 to 800 nm

• TUNER FM/AM [MW]

FM Tuning Range 87.5 to 108.0 MHz or 87.50 to 108.00 MHz
FM Intermediate Frequency 128 kHz
AM Tuning Range 522 to 1 620 kHz, 520 to 1 710 kHz or 522 to 1 710 kHz
AM Intermediate Frequency 45 kHz

• AMPLIFIER
Output Power Front : 50 W x 2

• USB
Bus Power Supply (USB) DC 5 V 500 mA
USB Version USB 2.0 or USB 1.1

• CD
Frequency Response 40 to 20 000 Hz
Signal-to-noise ratio More than 60 dB
Dynamic range More than 50 dB

• TAPE
F.F/REW Time 120 sec (C-60)
Frequency Response 250 to 8 000 Hz
Signal to Noise Ratio 40 dB
Channel Separation 45 dB (P/B) / 40 dB (R/P)
Erase Ratio 50 dB (MTT-5511)

• SPEAKERS
Speaker name MDS105V
Type 2 Way 2 Speaker
Impedance 4Ω
Rated Input Power 50 W
Max. Input Power 100 W
Net Dimensions (W x H x D) ( 202 x 337 x 237 ) mm
Net Weight 2.57 kg

1-8

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 SECTION 2
CABINET & MAIN CHASSIS

CONTENTS

EXPLODED VIEWS..................................................................................................................................... 2-3

1. CABINET AND MAIN FRAME SECTION (MDD105) ............................................................................... 2-3
2. TAPE DECK MECHANISM SECTION...................................................................................................... 2-5
3. SPEAKER SECTION ................................................................................................................................ 2-7
4. PACKING ACCESSORY SECTION ......................................................................................................... 2-8

2-1

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 MEMO

2-2

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 EXPLODED VIEWS
1. CABINET AND MAIN FRAME SECTION (MDD105)
263L

282
460 264L 262
A01 458
263R 272
KEY3
266L
A41A

458 458
264R
267L J

H C
283 266R
250 265
A26 I
CABLE3

267R
D A
C B
259
451 MAIN
452 459 B
258 D
J
A49 268 A46
257 281 E K 458
261 454 F H
O G
256 KEY2
451 454
255 456 456
MIC
452 458
A41L 454
254
L
Q KEY1
A48
452 G L
VFD 271
A43
A41R
LED Q
M
251 I
K
253 CABLE2
CABLE1
453 458
252 M

USB N
F
273
A00 453
453 A SMPS
A45
A47

O
456

300
E

N
270
269

2-3 2 -4

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 2. TAPE DECK MECHANISM SECTION

020
006
019

A00
017 022
037
001
018

007
A01
003

015
023

009

025

A02

011
009

2-5 2-6

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 3. SPEAKER SECTION
• LEFT / RIGHT SPEAKER (MDS105V)

A60

2-7

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 4. PACKING ACCESSORY SECTION

824 AM antenna 825 FM antenna

900 Remote controller 808 Battery

801 Instruction Ass'y

803T Packing

804 Bag

803B Packing

802 Box

2-8

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 SECTION 3
ELECTRICAL
CONTENTS

ONE POINT REPAIR INSTRUCTION ................................................................................................... 3-2

1. NO POWER PROBLEM ......................................................................................................................... 3-2
2. VFD DOESN'T DISPLAY ........................................................................................................................ 3-4
3. THE DISC TRAY DOESN'T WORK ....................................................................................................... 3-5
4. NO BOOTING WHEN YOU TURN THE UNIT ON ................................................................................ 3-9
5. SPEAKER NO OUTPUT WHEN YOU TURN THE UNIT ON .............................................................. 3-13
6. VFD HAVEN'T SHOW WHEN YOU TURN THE UNIT ON .................................................................. 3-15

MAJOR WAVEFORMS ............................................................................................................................ 3-16

1. IC1 MICOM INTERFACE WAVEFORM ............................................................................................... 3-16
2. IC100 MICOM INTERFACE WAVEFORM ........................................................................................... 3-17
3. SLED DRIVE AND MOTOR WAVEFORM ........................................................................................... 3-18
4. SPINDLE DRIVE AND MOTOR WAVEFORM ..................................................................................... 3-19
5. RF, FOCUS AND TRACKING ERROR WAVEFORM .......................................................................... 3-20

WIRING DIAGRAM ................................................................................................................................... 3-21

BLOCK DIAGRAM .................................................................................................................................... 3-23
CIRCUIT DIAGRAMS ............................................................................................................................... 3-25
1. SMPS - POWER CIRCUIT DIAGRAM ................................................................................................. 3-25
2. MAIN - DVD MPEG CIRCUIT DIAGRAM ............................................................................................. 3-27
3. MAIN - MCU CIRCUIT DIAGRAM ........................................................................................................ 3-29
4. MAIN - SERVO CIRCUIT DIAGRAM ................................................................................................... 3-31
5. MAIN - D/AC CIRCUIT DIAGRAM ....................................................................................................... 3-33
6. MAIN - AMP CIRCUIT DIAGRAM ........................................................................................................ 3-35
7. AUDIO DECK SYSTEM CIRCUIT DIAGRAM ...................................................................................... 3-37
8. MIC / USB / KEY / VFD CIRCUIT DIAGRAM ...................................................................................... 3-39

CIRCUIT VOLTAGE CHART ................................................................................................................. 3-41

PRINTED CIRCUIT BOARD DIAGRAMS ......................................................................................... 3-45
1. MAIN P.C.BOARD ................................................................................................................................ 3-45
2. SMPS P.C.BOARD ............................................................................................................................... 3-49
3. FRONT P.C.BOARD............................................................................................................................. 3-51

3-1

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 ONE POINT REPAIR INSTRUCTION
1. NO POWER PROBLEM
No power problem occurs when you power on the unit.

1-1. F1, D3 and D6

1-1-1. Solution
Replace F1, D3, D6 on SMPS board.

1-1-2. How to troubleshoot (Countermeasure)

1) Look at the physical of fuse F1.
2) Check the bridge diode of D3, D6.

2
W6 1Jumper
1

D3
DB105G
1+

C1
68uF/450V
3 3 2 2

W7 1Jumper
2
-

C3
4
4

103/630V 56k/

1-1-3. Service hint (Any picture / Remark)

68uF/450V
1

D6 D5
DB105G UF
1

U3
+

C9
5 Vstr DRAIN 8
2 2 3 3
2 Vcc DRAIN 7

4 6
-

Ipk DRAIN
4

1 GND Vfb 3
4

FSFM260N
D11
21
65

78 FR104
SQE2424 34 LF1 C14
47uF/50V
C21 C22
471/400V 471/400V

D16 FR104

W17
1

RT1 Jumper
2.7ohm/5W C18
2

t 472

C17 104/275V
Check with ohm meter is short!

W16
1

Jumper
2

SQE2424 LF2
21
65
C19
78 22uF/50V LT
34
R13
47k
C23 104/275V C24
472

RV1 471
R17
47k

R16 1.5M/0.5W
Q5
KTA1268 10
R25
F1
T3.15AL250V 3

HS1 15*10
Check with ohm meter is open!
1

3-2

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 ONE POINT REPAIR INSTRUCTION

No power problem occurs when you power on the unit.

1-2. C29 and C30

1-2-1. Solution
Replace C29, C30 on SMPS board.

1-2-2. How to troubleshoot (Countermeasure)

1) Check all of voltage.
W4 1Jumper
2

PC1
LTV-817
R10
560
W9

2
Jumper

1
R11 56

R12
2.7k

R14 18k
T2 R15
EER2828(AMP) C25 470pF/1kV 2.7k
5 W5 2Jumper
1 C26 2.2uF/50V C27 2.2uF/50V
6
C28 D18 UG4D
R18 4
103/630V 56k/2W R21 R22 R23 R24 R19 U6 R20
33k 33k 33k 33k U5 2.2k 2k
3 C29 C30
2 KA431/TO
1000uF/25V1000uF/25V
D19 KA431/TO
UF4007 1 R26 R27
220 150
7
8
4

CAUTION:
C32 R28 470
4

Danger if fuse is incorrectly replaced.

R29 W19 Jumper Replace only with the type identical to fuse rating
224 PC3 4.7k W152Jumper
1 1 2
and(or) model name described in main label.
3

LTV-817 2 1 2 1
3

W13 Jumper W18 Jumper

Warn
C35 222/400V Parts
respe

1-2-3. Service hint (Any picture / Remark)

&&

3-3

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 ONE POINT REPAIR INSTRUCTION
2. VFD DOESN'T DISPLAY
Timer doesn't work(abnormal display).

2-1. D13
2-1-1. Solution
Replace D13 on SMPS board.

2-1-2. How to troubleshoot (Countermeasure)

1) Check J1 pin3 Ö -26 V at power.

W1 1Jumper
2

C2 W2

2
uF/50V L1 22uH U1 78R05 Jumper 8P

1
1 IN OUT 2
8
8.GND
3 GND CON 4 7 7.CD_CTRL
C5 C6 6.PWR_CTRL
1000uF/16V 100uF/6.3V W111Jumper
2 W102 1
Jumper 6
5 5.PWR_SENS
C8 4 4.5.6V
U2 78R12 100uF/16V 3 3.VKK
2
C7 3 GND CON 4 1
2.FL-
1000uF/25V 1.FL+
1 IN OUT 2 J1

R2 10k
U4 278R33 W121Jumper
2
1 IN OUT 2

3 4 Q1
GND CON C11 KTC3205 W14

2
100uF/6.3V
Jumper

1
D9 D10
C16 1N4148 1N4148
47uF/50V
R4 1k R5 R6
C13 18k R7 10k
100uF/25V 1k W8

2
Jumper
D13 1.GND

1
J2
Q2 3V 2.GND
R8 1k Q3 C15 3.GND
KTA1273 KTA1268 1
47uF/50V 2 4.-12V
W3 1Jumper
2 3 5.+12V
Q4 4 6.+12V
KTC3205 5
6
7.5V
7 8.5.9V
C20 8 9.3.5V
9 10.3.5V
330uF/16V 10 11.GND
11 12.GND
W4 1Jumper
2 12
13.36V
13
14 14.36V
15 15.36V
R10 15P
560
W9
2

Jumper
1

2-1-3. Service hint (Any picture / Remark)

3-4

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 ONE POINT REPAIR INSTRUCTION
3. THE DISC TRAY DOESN'T WORK
When you turn on the set, the disc tray won't work.

3-1. U1
3-1-1. Solution
Replace U1_KA78R05 on SMPS board.

3-1-2. How to troubleshoot (Countermeasure)

1) Check all of voltage.
2) 5 V unnormal.

W1 1Jumper
2

W2

2
L1 22uH U1 78R05 Jumper 8P

1
1 IN OUT 2
8
8.GND
3 GND CON 4 7 7.CD_CTRL
C5 C6 6.PWR_CTRL
1000uF/16V 100uF/6.3V W111Jumper
2 W102 1
Jumper 6
5 5.PWR_SENS
C8 4 4.5.6V
U2 78R12 100uF/16V 3 3.VKK
2
3 GND CON 4 1
2.FL-
/25V 1.FL+
1 IN OUT 2 J1

R2 10k
U4 278R33 W121Jumper
2
1 IN OUT 2

3 4 Q1
GND CON C11 KTC3205 W14

2
100uF/6.3V
Jumper

1
D9 D10
C16 1N4148 1N4148
47uF/50V
R4 1k R5 R6
C13 18k R7 10k
100uF/25V 1k W8

2
Jumper
D13 1.GND

1
J2
Q2 3V 2.GND
R8 1k Q3 C15 3.GND
KTA1273 KTA1268 1
47uF/50V 2 4.-12V
W3 1Jumper
2 3 5.+12V
Q4 4 6.+12V
KTC3205 5
6
7.5V
7 8.5.9V
C20 8 9.3.5V
9 10.3.5V
330uF/16V 10 11.GND
11 12.GND
W4 1Jumper
2 12
13.36V
13
14 14.36V
15 15.36V
R10 15P
560
W9

3-1-3. Service hint (Any picture / Remark)

3-5

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 ONE POINT REPAIR INSTRUCTION

When you turn on the set, the disc tray won't work.

3-2. U4 and D8
3-2-1. Solution
Replace U4_278R33 and D8 on SMPS board.

3-2-2. How to troubleshoot (Countermeasure)

1) Check all of voltage.
2) 3.3 V abnormal.
1 10 1 2
W7 1Jumper
2 1 10 IN OUT
D4 SR306 3 4
C3 C4 C5 GND CON
R1 1000uF/16V 1000uF/16V
103/630V 56k/2W 9
9 C8
3 3 U2 78R12 100uF/16V
C7 3 4
D5 D7 SHG2D GND CON
1000uF/25V
U3 UF4007 8 8 1 IN OUT 2

5 Vstr DRAIN 8 2 2 R2 10k

2 7 D8 SR306 U4 278R33 W
Vcc DRAIN
7 7 1 IN OUT 2
4 Ipk DRAIN 6
3 GND CON 4
1 3 C10 C11
GND Vfb R3 1000uF/16V 100uF/6.3V
FSFM260N 4 4 12 12
D11
10
C12
100uF/50V R4 1k R5
13 C13 18k
FR104 13 100uF/25V
C14 D12 FR104
47uF/50V
R9
R8 1k Q2
5 5 11 11
KTA1273
D16 FR104 1 D15 FR104
W3 1Jumper
2
Q4
W17 15 KTC3205
1

umper 15
2

3-2-3. Service hint (Any picture / Remark)

3-6

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 ONE POINT REPAIR INSTRUCTION

When you turn on the set, the disc tray won't work.

3-3. IC401
3-3-1. Solution
Replace IC401_IP9011 on main board.

3-3-2. How to troubleshoot (Countermeasure)

1) Check 5 VM voltage.
2) Check IC401 pin15,16,17,18 1.5 V?
3) All of normal, please check R404,R444,R424,R410, also replace IC401.

5VM

R4A1 R4A3
27K 33K
3.54V 3.2V
L408
FB2500 R4A2 R4A0
9K1 9K1
R432
56K

C402
+ GND GND XX TURD_
1 DO1- DO6- 28
TURD
2 DO1+ DO6+ 27
TUR
3 DO2- FWD5 26
TU
4 DO2+ REV5 25
C419
R447 473P R444 5 VCC1 CTL5 24 R417
D 1K 9K1 33R SV
6 IN2 BIAS 23
D IC401 C404
C409
7 IN1
IP9011
GND 22
100uF C440 C435
R422 C421
1K C425 R404 C414 220uF C451 10V 104P 104P
103P 103P 20K 104P 10V 29 P GND PGND 30
104P

GND
R408 GND
R452 GND R424 C423 C420 R402
V_MUTE
3K3 100R 8K2 474P 474P 1K2 SPINDL
8 MUTE IN4 21
GND
9 CTL3 IN5 20
OSE
C188 NC C413 104P R410 R448
10 REV3 VCC2 19 5K1 1K2
EN SLE
11 FWD3 DO5+ 18
SL
12 SVCC DO5- 17
AD+ SP
13 DO3+ DO4+ 16
AD- SP
14 DO3- DO4- 15

C438 C439 C408 R409 R499

100P 100P C428 220uF 1K8 1K8
104P 10V R445
10K SPNN SP
GND

3-3-3. Service hint (Any picture / Remark)

R404, R444

IC401(IP9011)

R424, R410

3-7

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 ONE POINT REPAIR INSTRUCTION

When you turn on the set, the disc tray won't work.

3-4. IC1
3-4-1. Solution
Replace IC1 ESS8390 on main board.

3-4-2. How to troubleshoot (Countermeasure)

1) Check 5 V CD voltage.
2) Check 3.3 V.
3) Check X501, X100.
4) Check IC100 to IC1 communication resistor R84, R109, R110, R581.
5) Check IC1 to IC502 communication resistor R83, R541, R542.
6) Check ESS8390 SERVO voltage 1.5 V up to snuff instead IC501.

3-4-3. Service hint (Any picture / Remark)

,&

;

,&
,& ;

,&

3-8

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 ONE POINT REPAIR INSTRUCTION
4. NO BOOTING WHEN YOU TURN THE UNIT ON
When you turn on the set, it will show 'welcome' message continuously on the front
panel. And it will not boot-up normally.

4-1. IC503(W25Q16A), IC3(SN74LV00A)

4-1-1. Solution
Replace IC503,IC3 on main board.

4-1-2. How to troubleshoot (Countermeasure)

1) If 3.3 V haven't on main board of P1, please check P-SENS 5V come out or not?
Please check D1 or replace D1 on SMPS.
2) Check or replace L509.

4-1-3. Service hint (Any picture / Remark)

,&

,&

/

3-9

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 ONE POINT REPAIR INSTRUCTION

When you turn on the set, it will show 'welcome' message continuously on the front
panel. And it will not boot-up normally.

4-2. IC100 (LC87F5NC8A)

4-2-1. Solution
Replace IC100 on main board.

4-2-2. How to troubleshoot (Countermeasure)

1) If 3.3 V haven't on main board of P1, please check P-SENS 5V come out or not?
Please check D1 or replace D1 on SMPS.
2) If 5V normal, first check R100, R101, R102; OK!
Check the IC101 out and check the zener diode ZD101 voltage if between 4.18 ~ 4.3 V(main pcb).
3) After changging it, the SET is still not booting, please check 5.6 VA at P7904 come out?
Please check or replace diode D3 or L1 on the SMPS board;
Other check the main MCU reset IC U101_KIA7027 of replace it, check or replace D101,D102(main PCB bottom )
4) All of changed the SET still boot-up, please check or replace IC100_LC87F5NC8A(main pcb).

4-2-3. Service hint (Any picture / Remark)

='

'
,&

'

,&

3

3-10

Downloaded from www.Manualslib.com manuals search engine

 ONE POINT REPAIR INSTRUCTION

When you turn on the set, it will show 'welcome' message continuously on the front
panel. And it will not boot-up normally.

4-3. X100
4-3-1. Solution
Replace X100_9.8304 MHz on main board.

4-3-2. How to troubleshoot (Countermeasure)

1) If 5.6 V normal? Please check D101, D102.
2) Check X100 pin1, 2 voltage is 2.46 V or not replace it.

4-3-3. Service hint (Any picture / Remark)

' ;

'

3-11

Downloaded from www.Manualslib.com manuals search engine

 ONE POINT REPAIR INSTRUCTION

When you turn on the set, it will show 'welcome' message continuously on the front
panel. And it will not boot-up normally.

4-4. X101
4-4-1. Solution
Replace X101_32.768 kHz on main board.

4-4-2. How to troubleshoot (Countermeasure)

1) If 5.6 V normal? Please check D102, D102.
2) Check X101 pin1, 2 voltage is 2.26 V or not then replace it.

4-4-3. Service hint (Any picture / Remark)

;

'

'

3-12

Downloaded from www.Manualslib.com manuals search engine

 ONE POINT REPAIR INSTRUCTION
5. SPEAKER NO OUTPUT WHEN YOU TURN THE UNIT ON
When you turn on the SET, it will show 'welcome' message continuously on the
front panel. And speaker have noise output.

5-1. IC604
5-1-1. Solution
Replace IC604_PS9831 on main board.

5-1-2. How to troubleshoot (Countermeasure)

1) Check 3.3 V.
2) Check X601 crytal operation.
3) Check IC604 to IC700 communication resistor R798, R703, R704, R709, R719, R708.
4) Check PWM waveform at R799, R731, R732, R736, R737, R746.
5) If check all of OK, please replace IC604.

5-1-3. Service hint (Any picture / Remark)

,&

;

3-13

Downloaded from www.Manualslib.com manuals search engine

 ONE POINT REPAIR INSTRUCTION

When you turn on the SET, it will show 'welcome' message continuously on the
front panel. And speaker have noise output.

5-2. IC700, IC701

5-2-1. Solution
Replace IC700, IC701 on main board.

5-2-2. How to troubleshoot (Countermeasure)

1) Check +12 V, +36 V.
2) Check IC700 / IC701 +12 V power supply resistor R701, R702, R724, R727, R726, R729, R730, R787, R753.
3) Check signal out at L709, L708, L710, L716, L715, L711, L707, L712.
4) Check all of OK, please replace IC700, IC701.

5-2-3. Service hint (Any picture / Remark)

/ / / / /

/ /
/

,& ,&

3-14

Downloaded from www.Manualslib.com manuals search engine

 ONE POINT REPAIR INSTRUCTION
6. VFD HAVEN'T SHOW WHEN YOU TURN THE UNIT ON
When you turn on the SET, it will show 'welcome' message continuously on the
front panel. And speaker have noise output.

6-1. U901 (PT6324)

6-1-1. Solution
Replace PT6324 on VFD display board.

6-1-2. How to troubleshoot (Countermeasure)

1) Check F+_-22V, F-_-25V, VKK_-26V, VDD_+5.6V.
2) Check IC100 to U901 communication resistor R912, R913, R914.
3) Check FB914, FB907, FB906, FB918, FB908, FB910, FB911.
4) If check all of OK, please replace U901.

6-1-3. Service hint (Any picture / Remark)

37

3-15

Downloaded from www.Manualslib.com manuals search engine

 MAJOR WAVEFORMS
1. IC1 MICOM INTERFACE WAVEFORM
1) During power on 2) During normal play

1 IC1 Pin33 DVD_CE 1 IC1 Pin33 DVD_CE

IC1 Pin72 RESET 2 IC1 Pin72 RESET

2

3 IC1 Pin34 DVD_DO

3
IC1 Pin34 DVD_DO

IC1 Pin35 DVD_DI

4 4
IC1 Pin35 DVD_DI

FIG. 1-1 FIG. 1-2

CVBS
VDAC/YUV6 80

10P

10P
10P
FDAC/YUV7 79 C90 R5A0
104 390 1% C129
RESET/YUV4 78 10P

C198

C127

C128
COMP/YUV3 77
C89
VREF 76 104
VD33 75 C81
104
VS33 74
R551 XOUT
CLK/TDMCLK/RBCK 73
R5B4 750R R5A9 MRST
2 RESET 72
MCLK 71
FB600 R5B2 750R MCLK

IC1
C182 FB600
AUX3[0]/CAMIN0 70
104 330P
C195 C196
AUX3[1]/CAMIN1 69 C540 103
103
VDD 68

ESS8390/8391SCC
VS33 67 GND

VD33 66
AUX3[2]/CAMIN2 65 C551
104 TP1
AUX3[3]/CAMIN3 64
UP_SW
AUX3[4]/CAMIN4 63
TURO+
AUX3[5]/CAMIN5 62
TURO-
AUX3[6]/CAMIN6 61
SENSOR
AUX3[7]/CAMIN7 60
DOWN_SW
AUX15/656CLK 59
R558 FB272
AUX14/TBCK/TXD1 58
R554 FB272 DALRCK
AUX13/RWS/TDMFS 57
R5A8 FB272 ADC_BCK
AUX12/RBCK/TDMCLK 56
ADC_DATA
AUX11/RSD/TDMDR 55
AUX10/TSD[3] 54
R5B8 10R IN_SW
AUX9/HSYNC/TXD2 53
C550 L21
VD33 52 FB600
104
VS33 51
R5B7 FB600 OUT_SW
AUX8/VSYNC/RXD2 50
OPT_OUT
SPDIF_OUT 49
SPDIF_IN 48
SPI_DO

1 3 4 SPI_DO 47
SPI_DI 46
Intel Flash Option SPI_DI
SPI_CLK
8 DWE/SEL_PLL1

SPI_CLK 45
R5B6 NC
SPI_CLK_4MB
43 SPI_CS2
44 SPI_CS3
9 DSCK

14 VD33

30 VD33

32 AUX7
33 AUX6
34 AUX5
35 AUX4
36 VD33

39 AUX3
40 AUX2
41 AUX1
42 AUX0
24 DB10
25 DB11
26 DB12
27 DB13
28 DB14

31 DB15
15 VS33

29 VS33

37 VS33
10 DQM

R5B9 0R
16 VDD

38 VDD
11 DB7
12 DB6
13 DB5

17 DB4
18 DB3
19 DB2
20 DB1
21 DB0
22 DB8
23 DB9

COREVCC
C535
104
C539

C542

C78
104

104

R-X 220uF C549

NC 16V 104

C79 C541
FB272
100R

104 104
33R
33R
33R

33R

33R
33R

33R
33R
33R
2
4
6
8

2
4
6
8

2
4
6
8

R5A1 R5A4
10R 10R
1
3
5
7

1
3
5
R5A5 10R 7

1
3
5
7
R541

R542

R581
R109
R110

R543
R566
R83

R84

R43
2
4
6
8

R5A7
L24

10R
PWM_MUTE
I2C_DATA
DVD_CLK

DVD_DO

C186
I2C_CLK
V_MUTE

SPI_CS3
DVD_CB

DVD_DI
1
3
DB10 5
DB11 7

100P
DSCLK

GND
DB12
DB13
DB14
DB15
DQM
DB7
DB6
DB5
DB4

DB3
DB2
DB1
DB0
DB8
DB9
WE

MCLK

DALRCK
ADC_DATA

ADC_BCK

PWMMUTE

DADATA_3

DADATA_2

DADATA_1

DADATA_0

3-16

Downloaded from www.Manualslib.com manuals search engine

 2. IC100 MICOM INTERFACE WAVEFORM
1) During power on 2) During normal play

IC100 Pin25 DVD_CLK IC100 Pin25 DVD_CLK

5 5

IC100 Pin29 DVD_RST

6
IC100 Pin29 DVD_RST
6

FIG. 2-1 FIG. 2-2

0_DSP_RST 38
TP112 BQ_STB
IC100 0_BQ_STB 37
LC87F5NC8A
0_ADC_RST 36
TP210 BQ_RST
0_BQ_RST 35
PWM_RST

5 6 0_PWM_RST

NC
34

33
TP211

VOL_A
I_VOL_A 32
I_DECK_LBAF_A

I_DECK_LBAF_B

VOL_B
I_MIC_SENSE

0_HP_MUTE
0_DVD_RST
0_VFD_STB

I_VOL_B 31
0_VFD_CLK
I_DVD_CLK
0_DVD_DO

0_VFD_DO
I_SPBANA

I_DVD_DI
I_HALL_A
18

19

20

21

22

23

27
24

25

26

28

29

30

R100
4K7

3
R101 OUT
4K7
R166 100R

2
DGND
1
ZD101

IN IC101
5V1

KIA7042AF
PWR_SENS
MIC_SENS

HP_MUTE
DVD_RST
DVD_CLK

VFD_STB

VFD_CLK

R102
DVD_DO

VFD_DO
SPBANA

DVD_DI
LBAF-B

680R(2)

3-17

Downloaded from www.Manualslib.com manuals search engine

 3. SLED DRIVE AND MOTOR WAVEFORM
1) When focus search 2) During normal play

IC401 Pin18 SLED+

7 IC401 Pin18 SLED+

7
8
IC401 Pin15 SPIN+ IC401 Pin15 SPIN+

FIG. 3-1 FIG. 3-2

D
B
B
F0D
F0D
TRD
C402 TRD
XX TURD_N+ SLD
SLD
DO6- 28 SPINDLBD
TURD_N- SPINDLBD
DO6+ 27 CD_DVD_SLCT
CD_DVD_SLCT
TURO+ DRV_MUTE
FWD5 26 DRV_MUTE
TURO- CDLD
CDLD
REV5 25 DVDLD
DVDLD
CTL5 24 R417 DVDMDI
DVDMDI
33R SVREF VC
BIAS 23 VC
SVREF
IC401 GND 22 C404 C440 C435
SVREF
IP9011 100uF OPEN
C451 10V 104P 104P OPEN
104P CLOSE
CLOSE
PGND 30
GND

OUT_SW
R424 C423 C420 R402 OUT_SW
8K2 474P 474P 1K2 SPINDLBD IN_SW
IN_SW
IN4 21 UP_SW
SLD UP_SW
IN5 20 DOWN_SW
DOWN_SW
R410 R448 SPNN
7 VCC2 19 5K1 1K2
SLED+ SPNP
SPNN
SPNP
DO5+ 18 PU_DET
SLED- PU_DET
DO5- 17 SENSOR
SENSOR
SPIN-
DO4+ 16
SPIN+ TURO+
TURO+
DO4- 15 TURO-
TURO-

3-18

Downloaded from www.Manualslib.com manuals search engine

 4. SPINDLE DRIVE AND MOTOR WAVEFORM
1) When focus search failed or there is no disc on tray

IC401 Pin6 FOD

9
IC401 Pin3 F+

10

FIG. 4-1

TR+
1 DO1-
TR-
2 DO1+ 10
F+
3 DO2-
F-
4 DO2+
C419
R447 473P R444 5 VCC1 9
F0D 1K 9K1
6 IN2
TRD IC401
7 IN1
C409 IP9011
R422 C421
1K C425 R404 C414 220uF
103P 103P 20K 104P 10V 29 P G ND

R408 GN D
R452 GND
DRV_MUTE
3K3 100R
8 MUTE
GND
9 CTL3
CLOSE
C188 NC C413 104P
10 REV3
OPEN
11 FWD3

12 SVCC
LOAD+
13 DO3+
LOAD-
14 DO3-

C438 C439 C408

100P 100P C428 220uF
104P 10V
GND
GND

3-19

Downloaded from www.Manualslib.com manuals search engine

 5. RF, FOCUS AND TRACKING ERROR WAVEFORM
1) During normal play 2) When TOC reading

11 11
IC1 Pin136 RF
IC1 Pin136 RF

12 12
IC1 Pin120 TE
IC1 Pin120 TE

13 13 IC1 Pin121 FE
IC1 Pin121 FE

FIG. 5-1 FIG. 5-2

CLOSE
OPEN

CD_DVD_SLCT
VC

MN

XOUT
CDLD
DVDLD
SPNN

XIN
SPNP
+3.3VD

SVREF

PU_DET
VD33RF

DVDMDI

DRV_MUTE

DADATA_2
DADATA_1
33R/HB-121
33R/HB-121
10K
100p
102

223

472
102
154

104
NC

NC
NC

104

104

104
NC

L3
FB2500
C184

C100

C585
C99

C98
C97
C96

C95
C94

C75

C92
R5B0

C69

C93

C91

C15
R220
R198

100uF C16
16V 104

R82
4.7K
SPNP/MNTRP/IMSR 132
SPNN/MNTRN 131
AGC1 130
AGC2 129
DVDPD 128
VBO 127
COLD 126
DVDLD 125
REX 124
PI 123
V1650 122
FE 121
TE 120
MB 119
DB 118
MP 117
VGB 116
VPB 115
OPEN 114
OPENSW 113
CLOSE 112
CLOSESW 111
AMPSTBY 110
LDCO 109
VD33 108
VS33 107
VID_XI 106
VID_XO 105
VDD 104
TBCK/PWM_01R/DAC_01R 103
TWD3/PWM_03R/DAC_03R 102
TWD2/PWM_03L/DAC_03L 101
VS33 100

REFD

C508 C76 C5C9

100uF 104 104
16V
133 VPA
L511

C5C1
FB252
C77
134 VGA
135 DRFN
13 12
RF 680p 680p
136 DRFP
A
B
C
137 A
138 B
11
139 C
D
140 D
E
141 E
F
142 F
143 G
VC
144 H
MN
145 MIN
C5A7 146 SLV
SPINDLBD 104
147 DMO
F0D
148 FDO
SLD
149 SLO
TRD
150 TRO

IC1
DVDMDI
151 CDPD
REFD
152 REFD
VD33RF
153 AVD33

ESS8390/8391SCC
154 AVS33
C5A1 155 DVCC
C543 104
104 C5A2 156 VD33
104

3-20

Downloaded from www.Manualslib.com manuals search engine

 WIRING DIAGRAM
RIGHT
LEFT

Y/U/V/VIDEO OUT PUT AUX IN PUT FM ANTENNA

AM ANTENNA

5P

CN901
SIP1

P7709

USB+PHONE PCB

4P
CN904
MIC PCB

CN905

MAIN BOARD PCB

Shief cable
3P

P400

FFC 23P

EA
P1

Connector
SIP2

MAIN PCB TO USB PHONE PCB 2

3 DISC DVD DECK MAIN PCB TO 3DISC DECK 3
P406

CMS-S79RFVC

MAIN PCB TO MIC PCB 1

15P

MAIN PCB TO LOGIC DECK 2

MDD105 SMPS_100W CN1 FFC 9P
SMPS PCB TO MAIN PCB 2
9P

5P MAIN PCB TO KEY3 PCB 1

J2 MAIN PCB TO DISPLAY PCB 1
LOGIC DECK
P7709

DISPLAY PCB TO KEY1 PCB 1

CRP42602 P33
EAZ35771501
DISPLAY PCB TO KEY2 PCB 1
P7905
J1
P7904 P7906 TOTA L 14
CN3

6P 7p
FFC 23P

8P
3P

CN903 2P CN902
CON903 CON902 2P
CON901
KEY2 PCB

CN906
DISPLAY +KEY BOARD
KEY1 PCB

KEY3 PCB

IR VFD

Controller

3-21 3-22

Downloaded from www.Manualslib.com manuals search engine

 BLOCK DIAGRAM

OUT RCA JACK

VIDEO +COMPONENTS
Zk}kGjohunly FT24C02
63,1'/( S3053 EEPROM 2K
6/(')7 S8082 A,B,C,D,E,F,RF
DVD PICKUP
CDM-H1723 MOTOR
Disc Select DRIVER ESS8390SCC
ESS8390SCC
FT24C16 M12L128168A-6TG
EEPROM 16K
MPEG
MPEG DSP
DSP
SDRAM 128M

M OPEN/CLOSE

W25Q16A
FLASH 16M
IR LC87F5NC8A
MCU CLK, DI,D0,CE,
SOL_CONT,MOTOR_CONT,MODE,REC
PHOTO_OUT,HALF_SW
CD L / R
4052_A,B
TU_SDA,SCLK,RESET

FL
POWER AMP
KIA6225 L /R
D4558 WM8738 TAS5342LA
Control circuit
Logic Deck

P/B AMP ADC 50WX2

4 X2
BU4052 OP Amp
R/P SWITCH
BA3216

PS9831
SWITCH

FR
PWM
PWM
L /R SOUND PROCESSOR
BA3308S L/R
REC AMP
VFD SC,CLK,DO

AM / FM
Tuner Portable D4558
Module In HP Amp S4308
YST996
P Sense

USB+5V
Mic Amp ALC

+27V
+12V
+12V
+3.5V
-12V

KEY0,KEY1,KEY2 D+, D-

P Cont
CRP42602
LOGIC DECK PT6324 Front MDD105 SMPS FL+
MIC R / Key VFD
VFD
Key L / Key HP MULTI VOLTAGE
USB Host FL-
Jack Control DRIVER
DISPLAY
Control Control Jack
VKK

3-23 3-24

Downloaded from www.Manualslib.com manuals search engine

 IMPORTANT SAFETY NOTICE COMPONENTS ARE SHADED ON THE SCHEMATIC NOTE :

CIRCUIT DIAGRAMS WHEN SERVICING THIS CHASSIS, UNDER NO

CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN BE
FOR EASY IDENTIFICATION.
THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIFFER
FROM THE ACTUAL CIRCUIT USED. THIS WAY,
1. Shaded( ) parts are critical for safety.
Replace only with specified part number.
2. Voltages are DC-measured with a digital voltmeter
1. SMPS - POWER CIRCUIT DIAGRAM MODIFIED OR ALTERED WITHOUT PERMISSION
FROM THE LG CORPORATION. ALL COMPONENTS
IMPLEMENTATION OF THE LATEST SAFETY AND
PERFORMANCE IMPROVEMENT CHANGES INTO
during Play mode.
SHOULD BE REPLACED ONLY WITH TYPES IDENTICAL THE SET IS NOT DELAYED UNTIL THE NEW SERVICE
TO THOSE IN THE ORIGINAL CIRCUIT. SPECIAL LITERATURE IS PRINTED.
D1 FR104
2
W6 1Jumper
1

D3
12 DB105G W1 1Jumper
2
1+

C1 T1
68uF/450V EER2828(MULTI) C2 W2

2
3 2 2.2uF/50V L1 22uH U1 78R05 Jumper 8P
3 2

1
1 10 1 2
W7 1Jumper
2 1 10 IN OUT
8.GND
D4 SR306 8
3 4 7.CD_CTRL
-

C3 C4 C5 GND CON C6 7
4

6.PWR_CTRL
11 R1 1000uF/16V 1000uF/16V 100uF/6.3V W111Jumper
2 W102 1
Jumper 6
5 5.PWR_SENS
4

103/630V 56k/2W 9
3
9 C8 4 4.5.6V
68uF/450V 3 U2 78R12 100uF/16V 3 3.VKK
2
C7 3 GND CON 4 1
2.FL-
1

D6 D5 D7 SHG2D 1000uF/25V 1.FL+

DB105G UF4007 8 1 2 J1
1

U3 8 IN OUT
+

C9
10
5 Vstr DRAIN 8 2 2
2 3 R2 10k
2 3 D8 SR306 U4 278R33 W121Jumper
2
2 Vcc DRAIN 7
7 7 1 IN OUT 2
4 6
-

Ipk DRAIN Q1
4

3 GND CON 4
1 3 C10 C11 KTC3205 W14

2
GND Vfb
4

R3 1000uF/16V 100uF/6.3V
9 Jumper

1
FSFM260N 4 4 12 12
D9 D10
D11
10 C16 1N4148 1N4148
21 C12
65 47uF/50V
100uF/50V R4 1k R5 R6
13 C13 18k R7 10k
78 FR104 13 100uF/25V 1k W8

2
SQE2424 34 LF1 C14 D12 FR104 Jumper
8 47uF/50V D13 1.GND

1
C21 C22 R9 J2
Q2 3V 2.GND
471/400V 471/400V 5 11 R8 1k Q3 C15 3.GND
5 11 KTA1273 KTA1268 1
47uF/50V 2 4.-12V
D16 FR104 1 D15 FR104
W3 1Jumper
2 3 5.+12V
Q4 4 6.+12V
KTC3205 5
W17 15 7.5V
1

7 RT1 Jumper 15 6
7 8.5.9V
2.7ohm/5W C18
2

9.3.5V
t 472
D17 FR104
C20 8
9 10.3.5V
330uF/16V 10
C17 104/275V 6 14 11.GND
6 14 11 12.GND
W4 1Jumper
2 12
13.36V
13
3

6 14 14.36V
PC1
15.36V
3

W16 15
LTV-817
1

Jumper 15P
R10
560
2

SQE2424 LF2 W9

2
21
4

65 Jumper

1
1 1
5 C19 R11 56
78 LTV-817
3

22uF/50V
34 R12 JR1 MT_HOLE
3

R13 PC2 2.7k

47k 1 1
C23 104/275V C24 R14 18k
4

472 T2 R15
4

EER2828(AMP) C25 470pF/1kV 2.7k JR2 MT_HOLE

4
RV1 471 5 W5 2Jumper
1 C26 2.2uF/50V C27 2.2uF/50V
6 1 1
R17
47k C28 D18 UG4D
R18 4 JR3 MT_HOLE
103/630V 56k/2W R21 R22 R23 R24 R19 U6 R20
33k 33k 33k 33k U5 2.2k 2k 1
R16 1.5M/0.5W U7 KA5M0365 3 C29 C30 1
Q5 2 KA431/TO
3 1000uF/25V1000uF/25V
KTA1268 10 2 D19 KA431/TO JR4 MT_HOLE
R25 Drain
F1 UF4007 1 R26 R27
T3.15AL250V 3 Vcc 220 150
GND

7
F/B 4 8
HS1 15*10
1

2
4

1
1

CAUTION:
C34 C32 R28 470
4

Danger if fuse is incorrectly replaced.

47uF/50V R29 W19 Jumper Replace only with the type identical to fuse rating
W152Jumper
1 1 2
2
1

224 PC3 4.7k and(or) model name described in main label.

J3
3

LTV-817 2 1 2 1
3

CONN FLEX 2 W13 Jumper W18 Jumper

Warning
1 Parts that are shaded are critical with
C35 222/400V
respect to risk of fire or electrical shock.

(2010. 06.14)
A B C D E F G H I J K L M N O P Q R S T

3-25 3-26

Downloaded from www.Manualslib.com manuals search engine

 2. MAIN - DVD MPEG CIRCUIT DIAGRAM

R116 L510
IC502 C517

12
1M CLOSE
+3.3VD
FB2500 M12L128168A-6TG 220uF
10V

MIC_L
OPEN

MIC_R
CD_DVD_SLCT

BUS-DVD
VC

MN

XOUT

USB_P
CDLD
DVDLD
SPNN
SPNP

XIN

USB_N
+3.3VD

SVREF

PU_DET
VD33RF

DVDMDI

DRV_MUTE

DADATA_2
DADATA_1

DADATA_0
DADATA_3
X501
27MHz
XOUT
C533 C536 R85 C117
27P 27P R548 33K +3.3VD C107 104 UP_SW
FB600 104 1 VDD1 VSS 54
DOWN_SW UP_SW

33R/HB-121
33R/HB-121

33R/HB-121
33R/HB-121
DB0
10K

DB15
100p

L519 DOWN_SW

100P
102

223

472
102
154

104
NC

NC
NC

XIN 2 DQ0 DQ15 53 SENSOR

22K
104

104

104

473
NC

FB2500 SENSOR
L3 C110 3 VDDQ3 VSS 52 TURO-
L504 L31 FB2500 DB1 104 TURO+ TURO-
DB14
C184

C100

C585

C187
C99

C98
C97
C96

C95
C94

C75

C92
R5B0

220nH 470nH C591 4 DQ1 DQ14 51 TURO+

C69

C93

R540
Y_G C516 CD_DVD_SLCT

C91

C88
Y/G 105 100uF DB2 DB13 CD_DVD_SLCT
16V 5 DQ2 DQ13 50
DRV_MUTE

FB2500

FB2500
L522

L524
Q500 6 VSSQ6 VDD 49 C118 OPEN DRV_MUTE
C15 R220
GND 104

R198

R560
KTD1304S C16 DB3 OPEN

R86
100uF DB12 CLOSE
11 R509 16V 104
DB4
7 DQ3 DQ12 48
DB11 OUT_SW CLOSE
C200 8 DQ4 DQ11 47 OUT_SW
R89 82P 75R R82 IN_SW
4.7K 4.7K C557 IN_SW
SPNP/MNTRP/IMSR 132
SPNN/MNTRN 131
AGC1 130
AGC2 129
DVDPD 128
VBO 127
COLD 126
DVDLD 125
REX 124
PI 123
V1650 122
FE 121
TE 120
MB 119
DB 118
MP 117
VGB 116
VPB 115
OPEN 114
OPENSW 113
CLOSE 112
CLOSESW 111
AMPSTBY 110
LDCO 109
VD33 108
VS33 107
VID_XI 106
VID_XO 105
VDD 104
TBCK/PWM_01R/DAC_01R 103
TWD3/PWM_03R/DAC_03R 102
TWD2/PWM_03L/DAC_03L 101
VS33 100

0R
VD33 99
TWD1/PWM_02R/DAC_02R 98
TWD0/PWM_02L/DAC_02L 97
TWS/PWM_01L/DAC_01L 96
AVS33 95
MIC_R 94
MIC_L 93
ADC_BIAS 92
USB_NO 91
USB_PO 90
AVD33 89
REFD 104 9 VDDQ9 VSS 46 SVREF
DB5 DB10 CDLD SVREF
10 DQ5 DQ10 45
CDLD
C508 C76 DB6 DB9 DVDLD

R272
L28 100uF 104 C5C9 C529 C87 11 DQ6 DQ9 44
VC DVDLD
2.2UH CVBS 16V 104 104 100uF C116 VC
COMPOSITB 16V 12 VSSQ12 VDD 43
104 DVDMDI
Q503 133 VPA VS33PLL 88 DB7 DB8 SPNN DVDMDI
KTD1304S L511 13 DQ7 DQ8 42
SPNN
FB252 134 VGA VD33PLL 87
C5B8 SPNP
C77 C85 C86 104 14 VDD VSS 41
RF SPNP
C5C1 680p 135 DRFN TDAC/YUV1 86
104 104 DQM RF
R158 R173 RF 680p PR_R 15 LDQM NC 40 F
4.7K 75R 136 DRFP UDAC/YUV0 85 WE DQM F
10 C146 C503 A PB_B 16 /WE UDQM 39 E
E
470P 470P 137 A CDAC/YUV2 84 CAS DSCLK A
B Y_G 17 /CAS CLK 38
B A
138 B YDAC/YUV5 83 RASO B
L19 L20 C 18 /RAS CKE 37 C
220nH 470nH 139 C VS33DAC 82 CSO D C
PB_B D 104P 19 /CS NC 36
D
PB/B 140 D VD33DAC 81 BANK0 DMA11 F0D
Q502 E C68 CVBS 20 BA0 A11 35 F0D
KTD1304S 141 E VDAC/YUV6 80 BANK1 TRD
DMA9 TRD
F 21 BA1 A9 34 SLD

33P

33P
33P
142 F FDAC/YUV7 79 C90 R5A0 DMA10 SLD
104 390 1% DMA8 SPINDLBD
R154 R113 22 A10/AP A8 33
SPINDLBD
4.7K 75R 143 G RESET/YUV4 78 DMA0 DMA7 PU_DET

C198

C127

C128
C126 VC 23 A0 A7 32
PU_DET
82P 144 H COMP/YUV3 77 DMA1 DMA6
MN C89 24 A1 A6 31
145 MIN VREF 76 104 DMA2 DMA5
9 L25 L26 C5A7 146 SLV VD33 75 C81 DMA3
25 A2 A5 30
DMA4
220nH 470nH SPINDLBD 104 104 26 A3 A4 29
PR_R 147 DMO VS33 74
PR/R F0D R551 27 VDD VSS 28
Q501 148 FDO CLK/TDMCLK/RBCK 73
XOUT
KTD1304S SLD R5B4 750R R5A9 C111
MRST
149 SLO RESET 72 104 R574
TRD FB600 R5B2 750R MCLK 4.7K
R156 R155 150 TRO MCLK 71

IC1
4.7K C131 75R DVDMDI C182 FB600
82P 151 CDPD AUX3[0]/CAMIN0 70
330P DVD_CLK
REFD 104 C195 C196 DVD_CLK
152 REFD AUX3[1]/CAMIN1 69 C540 103 103 MRST R197 10K
VD33RF DVD_RST
153 AVD33 VDD 68
DVD_DI

ESS8390/8391SCC
154 AVS33 VS33 67 GND
DVD_DI
DVD_DO
8 L541 C5A1 155 DVCC VD33 66 +3.3VD DVD_DO
FB272 +12VA C543 104 DVD_CB
104 C5A2 156 VD33 AUX3[2]/CAMIN2 65 C551 DVD_CB
104 104 TP1 C149
157 VS33 AUX3[3]/CAMIN3 64 C192 10uF
GND
+3.3V C5A3 UP_SW L509 104 16V
158 VDD AUX3[4]/CAMIN4 63 FB272 USB_N USB_N
R88 R132 4K7 104 TURO+
R118 10K C538 159 SIN AUX3[5]/CAMIN5 62 USB_P
Q506 104 R533 NC TURO- VD33D USB_P
R515

4.7K
10K

A1298Y R534 NC 160 SOUT AUX3[6]/CAMIN6 61 C147 R193

GND SENSOR 10uF 51K
R96 NC 161 DMA4 AUX3[7]/CAMIN7 60 MIC_L 16V
DOWN_SW R94 R97 C530 MIC_SIG
Q507 V_MUTE R5A2 10R 162 DMA5 AUX15/656CLK 59
4K7 10K 104 MIC_R
DMA4 C5A4 R558 0R
KTD1304S R87 163 VD33 AUX14/TBCK/TXD1 58
C148
DMA5
7 FB272 104
164 VS33 AUX13/RWS/TDMFS 57
R554 FB272 DALRCK 10uF R196
51K
C558
330P

DMA6 R5A8 FB272 16V

ADC_BCK
165 DMA6 AUX12/RBCK/TDMCLK 56
C189 DMA7 ADC_DATA R530
100P 166 DMA7 AUX11/RSD/TDMDR 55 SPI_CS3 10K
DMA8 1 CE VDD 8 VD33D
167 DMA8 AUX10/TSD[3] 54 SPI_DI
DMA9 R5A6 R5B8 10R IN_SW 2 SD HOLD 7
168 DMA9 AUX9/HSYNC/TXD2 53 R5N0
DMA11 0R SPI_CLK
10R C550 L21 3 WP SCK 6 1 CD1 VCC 14
169 DMA11 VD33 52
104 FB600 R529 SPI_DO SPI_CLK_4MB
+3.3VD DMA3 4 VSS SI 5 2 D1 CD2 13
170 DMA3 VS33 51 47K
DMA2 R5B7 FB600 OUT_SW 3 CP1 D2 12
R555 171 DMA2 AUX8/VSYNC/RXD2 50 C515
C3
104
4.7K
DALRCK
DMA1 R5A3
172 DMA1 SPDIF_OUT 49
OPT_OUT GND
IC503 4 SD1 CP2 11
104
DMA0
6 10R
173 DMA0 SPDIF_IN 48 W25Q16A SPI_CLK
5 Q15 SD2 10

+3.3V
L23 DMA10 SPI_DO 6 Q16 Q29 9
FB272 R92 174 DMA10 SPI_DO 47
4.7K BANK1 Intel Flash Option SPI_DI +3.3VD 7 GND Q28 8
CAS 175 DRAS2 SPI_DI 46
5 DRAS0/SEL_PLL2

BANK0
6 DCAS/SEL_PLL3

SPI_CLK DOWNLOAD & DEBUG

8 DWE/SEL_PLL1
7 DOE/SEL_PLL0

176 DRAS1 SPI_CLK 45

C193
104
R90
4K7 WE
VD33 R5B6 NC
SPI_CLK_4MB
L508
FB272 IC3 SN74LV00A GND
CN2 NC

IC504
43 SPI_CS2
44 SPI_CS3

+3.3VD 1 GND
9 DSCK
1 VD33

3 DSC1
4 DSC0

14 VD33

30 VD33

32 AUX7
33 AUX6
34 AUX5
35 AUX4
36 VD33

39 AUX3
40 AUX2
41 AUX1
42 AUX0
24 DB10
25 DB11
26 DB12
27 DB13
28 DB14

31 DB15
2 VS33

15 VS33

29 VS33

37 VS33
10 DQM

R5B9 0R MRST R108 NC SPI_RST

16 VDD

38 VDD
11 DB7
12 DB6
13 DB5

17 DB4
18 DB3
19 DB2
20 DB1
21 DB0
22 DB8
23 DB9

GND
R91
4.7K RASO COREVCC FT24C02 SPI_DO SPI_DO
2
3
SPI_RST
SPI_DO
SPI_DI
R544 R93 L528 1 E0 VDD 8 4 SPI_DI
NC 4.7K FB2500
+3.3VD R98 R145 5
5 2 E1 WC 7 1K 1K
I2C_CLK SPI_CS3
SPI_CLK
3 E2 SCL 6 6 SPI_CE
I2C_DATA
7
C535

OPT_OUT C80 4 VSS SDA 5 3.3V

104
C539

C542

C548 C534 C78

104

104

100uF 104 104 220uF C549

R596 16V R-X 16V 104
DEBUG/NOMAL MODE 4.7K NC
SPI_CS3
C79 C541 CXX CX C120
FB272

FB272
100R

R95 104 104 NC NC 104

33R
33R
33R

33R

33R
33R

33R
33R
33R

4.7K
2
4
6
8

2
4
6
8

2
4
6
8

DVD_CB C199
C513 47P R5A1 R5A4
OPTION NC 10R 10R
+3.3VD +3.3VD
1
3
5
7

1
3
5
R5A5 10R 7

1
3
5
7
R557
R541

R542

R581
R109
R110

R543
R566
R83

R84

R43
2
4
6
8

R5A7
L24

4 10R
+12VA
PWM_MUTE
I2C_DATA

+12VA
DVD_CLK

DVD_DO

C186
I2C_CLK
V_MUTE

SPI_CS3
DVD_CB
DALRCK

DVD_DI
1
3
DB10 5
DB11 7

100P
DSCLK

GND
RASO

DB12
DB13
DB14
DB15
DQM
CSO

DB7
DB6
DB5
DB4

DB3
DB2
DB1
DB0
DB8
DB9
CAS

WE

MCLK

DALRCK
ADC_DATA

ADC_BCK

PWMMUTE

DADATA_3

DADATA_2

DADATA_1

DADATA_0

+3.3VD
RXXX
R150

R304

R194
XXR
RXX

R_X

3
RX
1K

0R

0R

0R

0R

0R

0R

0R

L201
XXX
0R

FB102K
R203
COMPOSITB 270R(3)
3

+12VA L215
C217 FB272
R124
4K7

KDS226
470uF C220
Q11
10V C221
PWM_MUTE

DADATA3

DADATA2

DADATA1

DADATA0

L202 47uF
ZD201

1 103P
4V7

2 16V
FB102K
ADDATA

ADMCLK

ADLRCK

ADBCK

C226 C223
Y/G 47uF
103P
3

JK201 C216 GND

C201 L203 10V
RGB&CVBS
KDS226 470uF 4.7uF FB272
1
Q10 10V 50V R201 GND
2 1 91R GND
2 L205 RCHOUT
FB102K
3
2 PB/B
LCHOUT
C202 R202
8 LIN RIN 7
3

4
C218
+5VM
4.7uF 91R 9 AVDD VREF 6

USB JACK
KDS226
5 470uF R64 50V
Q12
10V 10 AGND CAP 5 C121 C124 C123
GND

100R C204 C205 C122 10uF 104P 10uF

6 2 1
L208 CN205 222P 222P 104P 10V 10V
4

11 NOHP FMT 4
L206 FBS2545 5 GND +3.3VD
FB102K 1 C225
KIA78R05P 2 T+22 12 LRCLK BCLK 3 GND
+5.6VA 4 5V_USB IC501 103P
IC951 R2C1 22R R226 33R
PR/R T+21
3 D- NC 13 MCLK SDATO 2 ADBCK
USB_N 1.5V
3

C219 2 R229 33R

3

R2C0 22R T+20 2 D+ 14 DGND DVDD 1

KDS226 470uF R600 C54 C55 USB_P T+24 COREVCC ADDATA
Q13 10V 100uF 104 1 GND 3
22K GND
1 +3.3VD 25V C18 IC201
1

2
R2A8 R2A9 C14 GND WM8738 GND R151 33R ADMCLK
15K 15K 470uF GND
C267 103P 10V R175 100R
C266 C265 ADLRCK
100P 104P
1 GND
100P
GND

GND
LG-MDT355/MDD265/MDD65/MDD105
MAIN BOARD DVD MPEG(ESS8390)
GND
(2010. 06.14)

A B C D E F G H I J K L M N O P Q R S T

3-27 3-28

Downloaded from www.Manualslib.com manuals search engine

 3. MAIN - MCU CIRCUIT DIAGRAM
P7708
CD_PWR_CTRL
PWR_CTRL
PWR_SENS

CN/2PIN

+5.6_MCU
2
DGND_CPU

FAN DC(6.5 11V)

+5VM CD
FROM SMPS

FROM SMPS

+3.3VD
R902 104

+3.3VD

+36VP
+36VP
+36VP
+12VA
12

+12VA
+5.6V

+12VA

PGND
PGND
GND
VKK
FL+

15P/2.5MM

-12VA
GND GND
8P/2.0MM

FL-

TP185
TP184
P7904

GND
GND
GND
P1
L5F1 104
+5.6V

GOTO FAN GND GN D

R846 330R
R606
1

10

11

12

13

14

15
GND R845 330R

9
6K8 KRC103S Q800 C1F2 104P
P7905 23P/FFC Q801 D8550 R844 330R GND GND
TP136

TP135

TP1A4
TP137

TP138

TP139

TP140

TP141

OTW OTW
TP1A5 GND R843 330R
F+ 1 VFD_PWR
R842 330R

C887 104P
AMP_RST AMP_RST
TPA16
F- 2
PWR_CTRL -12VA AMP_SD AMP_SD
11 TP1A7 C841

104P

TO PWM
-VKK

C884
3 C883 R848 R847 104P C840 AMP_PROTECT AMP_PROTECT
+12VA 104P R849 1K 47K R885 100uF
VFD-STB 4 PWR_SENS C882 10K 47K 16V BQ_RST BQ_RST
104P

+3.3VD
+5.6VA
+5VM

+36VP
VFD-DATA 5

FAN_CTRL
BQ_STB BQ_STB
VFD_STB
TO FRON PCB BOARD

VFD-CLK 6
GND PWM/DSP_DAT PWM/DSP_DAT
R183 100R VFD_DO GND
GND GND GND
DGND 7 GND
TP134 C873 R184 100R VFD_CLK
PWM/DSP_CLK PWM/DSP_CLK

OTW
RESET

4052_B

HALL_B
4052_A

AMP_SD
PWR_CTRL

AMP_RST

AMP_PROTECT

PB_MUTE
VOL_LBD8

VOL_LBD7

VOL_LBD6

VOL_LBD5

VOL_LBD4

VOL_LBD3

VOL_LBD2

VOL_LBD1
+5V6

FAN_CTRL
8
GND

DBBUG2
DBBUG1
DBBUG0

PWM_RST
104P R181 100R REMOCON
PWM_RST
RESET

100R C53 103P

REMOTE-INT
P7709

SCART_RGB_VIDEO101
9
10
GND

SPBANA
R178 100R SPBANA

SCART_TVMODE101
VOL_A
VOL+A 10

22K
HP_MUTE
R169 100R VOL_B
HP_MUTE
1
4
3
2

VOL-B
5

11

16:9/4:101
+5V_UCOM HP_SENSE HP_SENSE
R170 100R R106
100R
100R

100R

100R
KEY1

104P
KEY1 100R

TP166
12 DBBUG2 TP197 EEPROM_DATA

R27
KEY3

TP107
DBBUG1
KEY3 TP196

R189 100R
13 EEPROM_CLK

R190 100R
TP111

C113
DBBUG0 TP195
D102
R605
R604

R112

R603
+5.6V
+12VA

R54
14
C874 104P IN4001 +5V_UCOM
R117 100K
R164 100K
R192 100K

DGND 15

C57

C114
9 VOL_LBD7

104P
X1
VOL_LED7 16
80

79

78

77

76

75

74

73

72

71

70

69

68

67

66

65

64

63

62

61

60

59

58

57

56

55

54

53

52

51
R162 100R VOL_LBD6
100uF X2
VOL_LED6 17 16V
I_HALL_B

0_PB_MUTE
NC

OTW

VSS2

VDD2

I_AMP_SD
0_AMP_PON
W_MUTE

0_PWR_CTRL

0_TAPE_AB
0_4052_1B

0_EXP_CLK1
0_4052_1A

0_VOL_LBD0

0_VOL_LBD8

0_VOL_LBD7

0_VOL_LBD6

0_VOL_LBD5

0_VOL_LBD4

0_VOL_LBD3

0_VOL_LBD2

0_VOL_LBD1

0_16:9_4:3

0_EXP_DAT1
0_FAN_CTRL

I_AMP_PROTECT
I_BASS_JOG_A

0_SCART_TVMODE

0_SCART_RGB_VIDEO
XT1
R129 100R VOL_LBD5 C102
VOL_LED5 18
GND
D_REC_MUTE XT2
223P
R55 100R

5
VOL_LBD4 81 I_BASS_JOG_B D_REC_MUTE 50
VOL_LED4 D101 R105 R107

104P
19 TP106

NC
VCC

SCL
R56 100R 4M7 1M

SDA
VOL_LBD3 R44 4K7 IN4001

FT24C16A
82 I_MIDOLB_JOG_B D_REC_SW 49
VOL_LED3 20
R104

IC103
TP104 REC_BIAS
R57 100R VOL_LBD2 83 I_MIDOLB_JOG_A D_REC_BIAS 48 330K X101 X100
VOL_LED2 21

C108
R58 100R TP165 TP103 D_SCL_B 32.768KHz 9.8304MHz
VOL_LBD1 84 0_ADC_CLK D_SCL_B 47
VOL_LED1

C101 104P
22

GND
8 R59 100R TP186

B0

B1

B2
VOL_LBD8 85 0_ADC_DAT D_SCL_A 46
VOL_LED8 23
R60 100R PWM/DSP_DAT R1C6 100R TP101 MOTOR

4
86 0_PWM/DSP_DAT D_MOTOR 45 C109
R1C7 100R TP109 220uF C103 C104

C105
C106
GND PWM/DSP_CLK

33P
33P
87 0_PWM/DSP_CLK I_DSP_IRQ 44 10V 30P 30P
C163 104P C190 104P C134 104P R140 4K7 TP110
C157 104P C181 104P C35 104P 88 VSS3 I_DSP_ESY 43
HP_SENSE
C115 IC100
C142 104P C177 104P R67 0R 89 VDD3 I_HP_SNS 42 RESET
LC87F5NC8A
C139 104P C173 104P R68 0R DBBUG2 R114 100R 104P R199 4K7 R191 4K7
90 DBGP2 I_PORT_SNS 41
C145 104P C172 104P DVD_CLK DBBUG1 R136 100R IC102
7 C144 104P C176 104P DVD_CLK 91 DBGP1 VDD4 40 KIA7027
TO DVD ESS8390

DVD_RST DBBUG0 R182 100R C112 104P

C154 C194

VCC

GND

OUT
1 3
104P 104P DVD_RST 92 DBGP0 VSS4 39
C166 104P C171 104P DVD_DI EEPROM_DATA R127 4K7 R1A9
DVD_DI 93 P_BBP_DAT 0_DSP_RST 38 1K

2
C159 104P C178 104P DVD_DO EEPROM_CLK R163 4K7 TP112 BQ_STB
C143 104P C167 104P DVD_DO 94 P_BBP_CLK 0_BQ_STB 37 R63
DVD_CB
C156 104P C180 104P DVD_CB D_REC_MUTE 100R(FX)
C31 103P
C28 103P

95 I_TREELE_JOG_B 0_ADC_RST 36
GND REC_MUTE
C136 104P C174 104P MIC_SIG TP210 BQ_RST
MIC_SIG 96 I_TREELE_JOG_A 0_BQ_RST 35 PB_MUTE
C133 104P C165 104P FB9 TP198
PWM_RST
PB_MUTE

C138 104P C164 104P FB2K5 97 NC 0_PWM_RST 34

6 C140 C175 R23 TUNER_RST TP211
TO KARAOKE KEY BOARD

104P 104P 98 0_TUNER_RST NC 33

0R
C141 104P C191 104P KEY3 TUNER_CE VOL_A
KEY3 1
KEY2 99 0_TUNER_CE I_VOL_A 32 REC_BIAS
I_DECK_LBAF_A

I_DECK_LBAF_B

C158 104P C162 104P REC_BIAS

0_TUNER_GP02

FB8
I_PWR_SENSE

KEY2 2 TUNER_DAT VOL_B

0_TUNER_CLK

I_MIC_SENSE

R153 100R(FX)
0_VFD_PWM

D_SCL_B
I_REMOCON

0_HP_MUTE
0_DVD_RST

C155 C170
0_VFD_STB

100 P_TUNER_DAT I_VOL_B 31

0_VFD_CLK
I_DVD_CLK

104P 104P
0_DVD_DO

0_VFD_DO

B-SOL
I_DVD_CB

GND
I_SPBANA

3
I_DVD_DI

FB2K5
I_HALL_A
VFD_RST

TO DECK
C135 C160
I_KEY1

I_KEY2

I_KEY3

104P 104P
RESET

P7906
VDD1
VSS1
XT1

XT2

3P/2.0MM
X1

X2

GND MOTOR
GND
GND FB2K5 MOTOR
10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30
1

GND GND TUNER_CLK R1C5 100R FB10 R100 HALL_B

C412 POT_R 4K7 HALL_B
TUNER_GP02 R1D1 100R FB6 FB2K5
104P L13
5 2.2UH R20 VFD_PWR R18 100R C26 103P
R137
100R

C415 47K FB613 FB2500

1 R892 +12VA TA+12V
104P 3
L14 7K5 C881 DVD_CB GND R101 OUT LBAF-B
MICON_RST

4K7
R166 100R

7 2 LBAF-B
C417 2.2UH FB612
R602 100R
R176 100R

330P DGND
R177 100R

REMOCON
104P 1 C674 47P BBAD
ZD101

8 R122 22K IN IC101

5V1

KIA7042AF TAPE_L
9 R886 R120 10K TAPE-L
7K5 R115 R61 10K R683 47K(FX) FB611
PWR_SENS
MIC_SENS

330K
HP_MUTE
DVD_RST
DVD_CLK

VFD_STB

VFD_CLK

R102 BBAD
DVD_DO

3
880
VFD_DO

R21
SPBANA

DVD_DI

R119 10K
LBAF-B

G ND GN D
330P 680R(2) C675 47P
KEY1

KEY2

KEY3

TAPE_R
47K
XT1

XT2

2 POT_L
X1

X2

RESET TAPE-R
4 L15
GND

BUS-MCU
6 R684 47K(FX)
4052_B
4052_A

TUNER_RST
TUNER_GP02

2.2UH
TUNER_CE

TUNER_CLK
TUNER_DAT

POT_L
JK554
5 GND R808 7K5
AUX-IN
TAPE_L R13 0R(AUX) R810
4 C802 220P 560R
C826 C800 R806
4.uF 470R R809 20K C803
C825 104P R49 1K_NC 4u7

TO ADC IC
C804
10uF X(272)
R141 NC

LCHOUT
R50 3K3_NC R807
16

15

14

13

12

11

10

50V
9

SIP2 R51 1K_NC 100K(27K) C801 C810

C813 104P C812 104P
TO MIC BOARD

X2

X1

X0

X3

B
X

22P 47uF RCHOUT

VDD

4
3
2
1

MIC_SENS GND
3 MIC_SENS 1 IC200 R52 3K3 16V
VSS

IN+

IN-

OUT

YD4052
MIC_SIG R53 3K3 C806
MIC OUT 2 +3.3VD
VEE

VSS
INH

IC801 X(272)
Y0

Y2

Y3

Y1

33R

33R
33R
33R
Y

MC4580
1K

GND 3 GND
GND
1

+12VA 4 +12VA C805 R817

OUT
1N+

VCC

R5 0R(AUX)
1N-

L2 GND 4u7 560R

R840

R832
R839
R836
R835

FB2K7 POT_R
GND
R65
5
6
7
8

C29 C811
TAPE_R
X(10K) 820P R814 C808 47uF
100K(27K) 22P 16V
FB5
FB4

FB2
FB3

FB1
104P
C'17

2 FB800 R816 20K

C809 R813 R805 R811
220R

R803

FB600 GND
4.7uF 470R 82R 82R C807 220P
FB601 R815 7K5
R834 R838 FB2K7
FB2K5
FB2K5

GND
FB2K5
FB2K5
FB2K5

-12VA +12VA
GND
GND
4K7 4K7
+3.3VD

R897 C30
X(10K) 820P +5VM
C834 FB901
103P C21
103P C24
103P C25

104P
+12VA

9
8
7
6
5
4
3
2

C22 NC
R142
C23

R48 NC
NC

0R

9
RST 8

7
6
5
4
3
2
1

1 NC C836
GPIO2/INT

RCH
SEN

VCC
SCLK
SDIO

LCH
GND

100uF
-12VA GND 16V
TUN800 LG-MDT355/MDD265/MDD65/MDD105
GND
GND MAIN BOARD MCU
(2010. 06.14)
A B C D E F G H I J K L M N O P Q R S T

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 4. MAIN - SERVO CIRCUIT DIAGRAM

12 R426 Q402
C431 33R D404 2SK3018
RFVCC50
104 DAN202K
R411
10K
GND

C401 R418 CD_DVD_SLCT

47uF C422 COREVCC
104P 100K R139 R131
16V Q401 Q404 R443
R415 KTC3875S 10K 2.2R(1206) 2.2R(1206)
22R 2SK3018
11 R143 R134
C441 +3.3VD
R420 2.2R(1206) 2.2R(1206) GND
GND RF
GND
104 D401 1OK R130
RF
F
DAN202K 0R Q4 F

Q403 C27 C425 C8550D(DIP) R408 C188

E
C20 C423 E
KTC3875S 47uF 103P 3K3 NC A
16V 104P 474P A
C
P400
R447 R444 R77 C
23P FFC D
1 HFM_VCC GND F0D 1K 27K 1 28
100R DRV_MUTE D
GND
HFM_VCC GND
VINFC MUTE B
B
2 RF_OUT RF R121 R417 33R SVREF F0D
10 RF_OUT 1K5
2
TRB_1 BIAS
27
F0D
3 LD_DVD
VD33RF PU_DET R66 3 26 TRD
TRD
LD_DVD R414 R144 5.1K REGO_2 VINTK
TRD

100K R431 10K C406 10K

SLD
4 MD_DVD 47uF SLD 4 25 R147 R404 R422 C435 SLD
MD_DVD R453 16V
VINSL+ TRB_2
5K6 47K 1K 104P
SPINDLBD
SPINDLBD
5 VR_DVD R448 R410 R62 22K
VR_DVD 220K Q407 470R
5
REGO_1
IC808
RESET
24
R424
CD_DVD_SLCT
KTC3875S C426 1K2 S3053
CD_DVD_SLCT
6 GND_PD R69 0R 4K7 SPINDLBD DRV_MUTE
104P CLOSE 6 23 DRV_MUTE
OPU(COMMON)

GND_PD RED VINLD CDLD

7 VREF
GND
VC OPEN R70 0R 7 22 R402 CDLD
VREF REV GND
C421 1K2 DVDLD
VCC 5VM C420 DVDMDI
DVDLD
9 VCC
8 103P 474P DVDMDI
F F VC
F
9 5VM R79 SVREF
VC
E E C414 C409 6.8K SVREF
10 H1 H2 GND R432 OPEN
E 104P 220uF 56K OPEN
11 A A 10V CLOSE
A CLOSE
D D OUT_SW
12 8 21 5VM OUT_SW
D GND
VCC1 VCTL IN_SW
13 C C LOAD+ 9 20 R78 IN_SW
C VOTP- VCCD 15K UP_SW
UP_SW
B B LOAD- DOWN_SW
8 B
14 10
VOTR+ VCC2
19
DOWN_SW
F- F- SPIN+ SPNN
15 SLED+ 11 18 SPNN
FOCUS- VOSL+ VOLD- SPNP
16 T- TR- SLED- 12 17 SPIN- SPNP
TRACK ING- VOSL- VOLD+ PU_DET
PU_DET
17 T+ TR+ F+ C419 473P 13 16 TR+ SENSOR
TRACK ING+ VOFC- VOTK- SENSOR
F+ F+ F- TR-
18 14 15
FOCUS+ VOFC+ VDTK+ TURO+
TURO+
19 SW_PDIC
SW_PDIC TURO-
TURO-
7 20 TP401 L400 R409 R499
GND_LD FB600 12K 12K
GND

C438 C439
21 LD_CD R445
LD_CD 100P 100P
MD_CD
0R SPNN
22 DVDMDI
MD_CD
VR_CD
VR_CD
23
R451 R450
0R 0R R425
GND
0R SPNP
CDLD0 CDLD

6 C427 R446 C403 L1 2500 R419 R403

D3 102P 100R 100uF
DAN202K 22K 47K
C407 R421
L401 Q406 R458 220uF 10K C418
FB600 2SA1037K 2R2(2) 6V3 104P

GND
S3053+S8082 GND
DVDLD0

C424 C442 C429 102P R416 DVDLD

104 104 D2 100R
5 DAN202K R413
C410
5VM

R456 220uF 10K L520 2500

Q405 2R2(2) 6V3
2SA1037K
GND C511 +3.3VD
GND C544 100uF L404
104P 16V TURD_N-
FB600
CHGND C402 IC806
RFVCC50
P604
C436 R491 104P S8082
15P/FFC
104P(X) 2R2(X) SPIN-
5VM
4 (SP)DCMO- 1 TURD_N+
8 VD2 GND 1
+5VM

SPIN+ FBS2545
(SP)DCMO+ 2
7 PVCC VD1 2
SLED- L4
SL- 3
6 SVCC VCTL 3
SLED+
SL+ 4
C432 R466
TURO-
5 VIN2 VIN1 4
104P(X) 2R2(X) R4B3 100R DOWN_SW ZD1
DN SW 5
R4B4 100R UP_SW
3V3
UP SW TURO+
6
OUT_SW
3 OP SW 7 R601
IN_SW 1R
CL SW 8
R481 2R2(X) C434 104P(X) LOAD-
C612 C617
LD- 9 100uF 104P
LOAD+ 10V
LD+ 10
R484 27R R488 27R
PHOTO 11
SENSOR
D_SENSE 12
R483 47K R406 100R
2 GND 13
GND GND
TURD_N-
TUR_N- 14
TURD_N+
TUR_N+ 15
4K7

4K7
4K7

4K7
4K7

GND L402
R482

C437 C433
R485
R487

R490
R489

FB2500 104P 104P

1
BUS-RF

BUS-RF
5VM
GND
LG-MDT355/MDD265/MDD65/MDD105
MAIN BOARD SERVO
(2010. 06.14)
A B C D E F G H I J K L M N O P Q R S T

3-31 3-32

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 5. MAIN - D/AC CIRCUIT DIAGRAM

R103
10K
12
+5.6V R1C1 SIP1
100R 4P/2.0MM

HP_SENSE R667 C678

12.288MHz
HP_SENSE 1
2 HP_R 120R 22P
3 GND R666 +5V_UCOM

X601
+5.6VA

HP_MUTE 4 HP_L 1M C673

22P
R671 R669
D600 100R 10K
11 1N4148 D601 PWM/DSP_CLK
1N4148 R670 R672
PWM/DSP_DAT 100R 10K
R876 R877
C600 10R 0R
220uF +3.3VD
Q802 FB607
16V C8550 Q803 FB2500
C8050 C646 C647
104P C611 1000uF
104P C625

103P

104P

104P

104P
10K

10K
10K
10K
10V

C649
220uF
R875 R665 R673 16V
10 4K7 C818 R160 1K 1K2

R674

R675
R676
R677
C650

C656

C663
22uF PWM_RST C664 GND
50V 104P
0R
100

R161
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
+5.6V
SCAN_BNA
TEST_MODE3

SPI/IC2
DVSS92

DVDD91

DVSS81

DVDD80

SO_SDA

BPD_BNA
CLK_IN

SCK_SCL
/RESET

IO_VSS95

DMIX_BCK

IO_VSS85
IO_VDD94

IO_VDD87

SI/I2C_ADD

OVBPLOAD
DMIX_MCLK

/CS/I2C_AD2
DMIX_SDOUT

DMIX_LRCK
TEST_MODE2

TEST_MODE1

$$$28504 NC
R873 R874
1K 1K 1 IO_VSS1 PWM8_P 75 PWM_FL+

C643 10uF 2 PLL_DVSS PWM8_M 74 PWM_FL-

9 104P C639
16V
FB2K7
FB608

3 PLL_DVDD IO_VSS73 73
C613 C644 104P
Q804 103 4 IO_VDD4 IO_VDD72 72 C670 104P
Q805
KRC231 KRC231 5 IO_VSS5 PWM7_P 71 PWM_FR+

6 PLL_AVDD PWM7_M 70 PWM_FR-

R857 R861 C636 C645
8R2 8R2 104P 10uF 7 IO_VSS7 IO_VSS69 69
R858 R862 16V PWM_SW+
8 10K 10K 8 PLL_AVSS PWM6_P 68
R859 R860
9 67 PWM_SW-
2R2 2R2 IO_VSS9 PWM6_M
+12VA C681 C682 -12VA FB609 C641 104P
47uF 47uF 10 IO_VDD10 DVDD66 66 C655 104P
FB2K7
25V 25V 11 MBCK IO_VDD65 65
C848 220uF C619 104P
16V C846 12 MLPCK IO_VSS64 64
16V C642 104P
220uF
13 DVDD13
IC604
DVSS63 63
C842 IC802 C844 14 DVSS14 PWM5_P 62 TP630
7 104P MC4580 104P R863 PS9831
6K8 15 MSDIN0 PWM5_M 61 TP629
R856 C847
6K8 8 VCC OUT 1 47P(100P) 16 MSDIN1 IO_VSS60 60
C849 7 OUT IN- 2 17 MSDIN2 PWM4_P 59 TP628
47P(100P)
6 1N- IN+ 3 18 MSDIN3 PWM4_M 58 TP627
ADC_BCK R653 100R
5 1N+ VSS 4 19 SBCK IO_VSS57 57
DALRCK R654 100R
6 20 SLPCK IO_VDD56 56 C657 104P
21 IO_VSS21 PWM3_P 55 TP626
R868 R867 C640 104P
68K 68K 22 IO_VDD22 PWM3_M 54 TP625
DADATA_0 23 SSDIN0 IO_VSS53 53
C851 C850 R655 100R
24 SSDIN1 PWM2_P 52
PWM_HP_R_M

PWM_HP_L_M

47P 47P
PWM_HP_R_P

PWM_HP_L_P
PWM_SWL_M

PWM_SWL_P
BXT_MUTE

MIC_MCLK
IO_VDD29

IO_VDD39

IO_VDD47

R678 25 51
MIC_LRCK

MIC_SDIN

SSDIN2 PWM2_M
IO_VSS28

IO_VSS38

IO_VSS44

IO_VSS50

R865 R864
PWM1_M
MIC_BCK

PWM1_P
DVDD34

DVDD42

R854 R855 NC
SSDING

R680
DVSS35

DVSS43

5 6K8 6K8 6K8 6K8 10K

DADATA_1 R656 100R
C852 C853
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50

C860 C859 R657 100R

4.7uF 4.7uF 4.7uF 4.7uF DADATA_2
TP619

R652 10K
TP615
TP616
TP617
TP618

TP620
C654 104P

C653 104P

C651 104P

C660 104P

C861 C863 R660 100R

HP_L_M

HP_L_P

22P 22P DADATA_3

HP_R_M
HP_R_P

C665
PWM_MUTE C631 470uF
104P 10V
C875 C862 C864 C854
4 100P 22P 22P 100P

BUS-DAC
R659 100R
C858 C856 BQ_RST
330P 330P BQ_STB R658 100R

REC_R C603 2U2 R646 10K

C857 C855 C604 2U2 R647 10K
330P 330P REC_L
+12VA TP612
3
R852 R853 R870 R869 R687 D605 C608
15K 15K R561 33P R689
R850 R871 15K 15K R686 NC 1SS355 220K 100K
10K 10K NC R640 R644 +5VM
22K R645
D602 C601 C602 220K 220K
R685 1SS355 2U2 R642 2U2
100R 1M
R851 R872 SPBANA
10K 10K 1 VDDA CKIN 8
R688 1K
ZD602

R643
HP_R_M

1SS355
HP_L_M

2
HP_R_P

HP_L_P

D604
5V1

2 VSSA RESET 7
D603

R638 100K C605 C606 R648 R649 1SS355 C609 104P

R639 C690 NC 330P 330P 10K 10K 3 OUT GND 6
BUS-DAC
220K 0.1uF Q601
50V C9014 4 STROBE IN 5
R664
120P

R662 1K
R641 22K IC601
100R R668 XX(MSGEQ7N(FO))
100K
C610
C607

102P
1
LG-MDT355/MDD265/MDD65/MDD105
MAIN BOARD D/AC
(2010. 06.14)
A B C D E F G H I J K L M N O P Q R S T

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 6. MAIN - AMP CIRCUIT DIAGRAM

JK701
12
MDT355 IC700 (TAS5342A) IC701(TAS5342A)

MDD265 IC700 (TAS5352A) IC700(NC) WOOFER PART NC

SW+
FR+

SW-
FL+

FR-
FL-
MDD105 IC700 (TAS5342LA) IC700(NC) WOOFER PART NC

1
2
3
4
5
6
11

C703 470uF/35V 4 3
L714

L707,L708,L709,L710 15uH/4A 4 3
L706
4 3
L705
1 2
22UH

2.1 CH_SUBWOOFER OPTION

22UH 22UH R733 C7G5 C7G6 R741
3R3(2) 103(2) 103(2) 3R3(2)
1 2 1 2
10 R705 C7G1 C7G2 R713 R716 C7G3 C7G4 R722 C754 104(2) C749 104(2)
3R3(2) 103(2) 103(2) 3R3(2) 3R3(2) 103(2) 103(2) 3R3(2)
MDD65 IC700 (TAS5342LA) IC700(NC) WOOFER PART NC C713 104(2) C718 104(2) C728 104(2) C733 104(2) C767 224(2) C771 224(2)
C703 470uF/35V C711 R706 R710
224(2) 2R2(2) 2R2(2)
C720
224(2)
C726 R717 R720
224(2) 2R2(2) 2R2(2)
C735
224(2)
C752 R734 R738
224(2) 2R2(2) 2R2(2)
C761
224(2)
R743
10K(2)
R748
10K(2)
L707,L708,L709,L710 15uH/4A C714 224(2) C719 224(2) C729 224(2) C734 224(2) C755 224(2) C760 224(2)

C795 684S(2) C794 684S(2) C845 684S(2) C769 684S(2)

9

-
-

-
-

-
-

L708 L709 L710 L707 L716 L715 L711 L712

10UH 10UH 10UH 10UH 10UH 10UH 10UH

10UH

+
+

+
+

+
+

C712 R707 R711 C721 C727 R718 R721 C736 C753 R735 R739 C762 C766 R744 R747 C772
330P(2) 18R(2) 18R(2) 330P(2) 330P(2) 18R(2) 18R(2) 330P(2) 330P(2) 18R(2) 18R(2) 330P(2) 330P(2) 18R(2) 18R(2) 330P(2)

8
R700
3R3(2)
103P(2)

R728
C750

C708 3R3(2)
103P(2)
C704 C715 C717 C730 C732 C746 C756 C758 C768 C770
104P(2) 224P(2) 224P(2) 224P(2) 224P(2) 104P(2) 224P(2) 224P(2) 224P(2) 224P(2)

R701 R729
C710 333(2)

C722 333(2)

C723 333(2)

C737 333(2)

C751 333(2)

C763 333(2)

C764 333(2)

C773 333(2)
10R(3) R726 10R(3) R752
7 C703 10R(3) C745 10R(3)
1000uF 1000uF
50V 50V
C705 C739 C747 C775
104P(2) 104P(2) 104P(2) 104P(2)
44

43

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

44

43

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23
NC

NC

NC

NC
GND_B

EST_B

GND_B

EST_B
EST_A

EST_C

EST_A

EST_C
OUT_B

PVDD_B

GND_D

EST_D

OUT_B

PVDD_B

GND_D

EST_D
OUT_A

GND_A

OUT_C

GND_C

OUT_A
OUT_D

GND_A

OUT_C

GND_C
PVDD_D

PVDD_D

OUT_D

PVDD_D

PVDD_D
PVDD_A

PVDD_A

PVDD_C

PVDD_A

PVDD_A

PVDD_C
GVDD_D

GVDD_D
GVDD_A

GVDD_A

6
TA53X2/XX

TA53X2/XX
IC700

IC701
RESET_CD

RESET_CD
RESET_AB

RESET_AB
GVDD_C

GVDD_C
GVDD_B

GVDD_B
OC_ADJ

OC_ADJ
PWM_D

PWM_D
PWM_A

PWM_C

PWM_A

PWM_C
PWM_B

PWM_B
AGND

AGND
VREG

VREG
OTW

OTW
GND

GND
VDD

VDD
M3

M2

M1

M3

M2

M1
NC

NC

NC

NC

NC

NC

NC

NC
SD

SD
10

11

12

13

14

15

16

17

18

19

20

21

22

10

11

12

13

14

15

16

17

18

19

20

21

22
1

5 C706 C740 C748 C776

104P(2) 104P(2) 104P(2) 104P(2)
100R

100R
100R
100R
100R

100R

100R

100R

100R
100R
100R
100R

100R

100R
22K

22K
104P

104P

R702 R727 R730 R753

10R(3) 10R(3) 10R(3) 10R(3)
C793
C724

C765

104P
R798

R703
R704
R708
R709
R712

R719

R723

R799

R731
R732
R736
R737
R740

R746

R749

C738 C774
104P(2) 104P(2)
4
C680 C725
47uF ZD202 10uF
35V 50V
-

12V
FBS2545
FB1104

R787 1R(3)
R724 1R(3)
+

3 C784
104P

R750 PWM_SW-
1K(2) PWM_SW+

PWM_FR-
PWM_FR+
2
PWM_FL-
PWM_FL+

C780
104P(2)
R135 AMP_PROTECT
R756 10K(2)
AMP_SD
OTW

100R
GND
+36VP

+12VA

AMP_RST

+5.6V
Q701
R754 8550 R755 Q702
1 1K(2) 100K(2) KRC103S
LG-MDT355/MDD265/MDD65/MDD105
MAIN BOARD AMP

(2010. 06.14)
A B C D E F G H I J K L M N O P Q R S T

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 7. AUDIO DECK SYSTEM CIRCUIT DIAGRAM

12

11

DECK MECHANISM SIDE

MOTOR
10

B-HALF SW
REC SW-F

B-MODE SW

REC SW-R
B-SOL
U201
U202
KIA6225
BA3126N
CONT

GND

GND
VCC

GND
VCC

8
1

B-PHOTO OUT
GND(M/T.SW)
C38

B-MODE SW
B-HALF SW
FB201

REC SW-F
10uF/25V

GND(SOL)

REC SW-R
VCC 12V
FB600 C299
R219 R41

B-SOL
10uF/25V FB203
R204 1K 1K FB600
C5
+5V_UCOM
100K 472M
RP/B_HD_RCH C39 C259

9P/FC
CN1
222P R40 392
47K

6
5
4
3
2
1
9

7
C272 R24 8K2
10uF/25V FB251
C211 8K2
FB600 R36
R32 R42
C251 10uF/25V FB253
1K 1K FB600
7 222P
GND
R31
100K
C1
472M
R15 8K2
CN3 C40 R33 R39
R14 8K2
+LCH 6P/2.0MM R225 392 Q204 47K 3K3
C227 C229 C36 C231 9014C
1 R211 47K R45 R37 39K
-LCH 2 100/16 104 390P 390P
100 1K
3 R34 56K
+RCH 4
5 R215 R216 R25
-RCH 6
18K
120K 120K LBAF-B
RP/B_HD_LCH E.HD
TO DECK R29 C208 R217 HALL_B
E.HD 103 8K2
100 R208 C235 R218
8K2 103

M+
R28 100
100R
Q203

SOL.+
GND
9014C B-SOL
6 R205
C295
4.7uF/50V C37 C233
10K 47/16
47/16
C230 C19 MOTOR
100/16 103

ERASE_HEAD CHGND Q293 Q291

A1273Y A1273Y
+12VA
C293
R290
223 C292 10uH
Q14 R295
Q280
8550/AI 8050/AI R280 3K3 22U/16V
2R2 1/4W
C291 R292
223 R291 R401
Q292 47K
3K3 220K
R265
100K

D290
5 1N4148
9014C
R281
C288 560R
Q15 100U/16 R293
1K R133
R138 9014 1K 1K
GND
GND
Q290
10K

C151 9014C
C244 GND 104p
R242 R243
10uF/25V
R296
ZD280

7K5 2K2 C271

9.1V

100U/16
R297
R251 R249
150 R294 C290
7K5 2K2
GND GND GND 10K 4U7
U203
4 C248 C243
C294
BA3308
1000P 1000P
10uF/25V
R253 R240
ALC
6K2 6K2 R244
GND

VCC

0R
ALC

C258 C257
270P 270P
1

PB_MUTE

Q201 R250
C254 REC_BIAS
STD1862LPF 100 10uF/25V
L17 C263 270P TA+12V
2A621 R277 FB254 TAPE-L
C222 C247 C210
3 472(M) 15K
153P 102P
C255
1000P
R263 47K FB2K7
TAPE-R
REC_L
C236 R271
122M 10 REC_R
C33
C213
10uF/25V 270P FB204
FB2K7 REC_MUTE

R256 R255 C32

27K R213
27K 1000P 47K
GND Q202
C241 9014
R252
10/50 R257 R35
1K R254 R38
1K5 1K5 3K Q2
C249 3K
9015C
100/16 C150
R276 R46
2 C252 220K
100/16
C44
0.47uF
C52
1K
47/16 C298 C296 0.47uF
10/35 47/16

GND GND

Q1
9015C

1
LG-MDT355/MDD265/MDD65/MDD105
AUTO DECK SYSTEM

(2010. 06.14)
A B C D E F G H I J K L M N O P Q R S T

3-37 3-38

Downloaded from www.Manualslib.com manuals search engine

 8. MIC / USB / KEY / VFD CIRCUIT DIAGRAM

KEY1 PCB KEY3 PCB

VFD BOARD
12
VFD901 SW919 SW920 HEADPHONE C924 104
LG_MCT355_VFD-A 6 TO MAIN PCB PWM
FB922 0R CN901
CD SYNC EQ JK901 100M 70R JK902 FB223
R946 5 CN904 USB SOCKET
VFD FB905 1 USB_GND2
HNA-15MM40T R942 1 HP-SENS
15G
14G
13G
12G
11G
10G

V+ 6
P20
P19
P18
P17
P16
P15
P14
P13
P12
P11
P10

2 USB_VCC
NX
NX
NX
NX
NX
NX

F+
F+
NP
NP

9G
8G
7G
6G
5G
4G
3G
2G
1G
NP
NP

SW918 FB904 3.3uH

P9
P8
P7
P6
P5
P4
P3
P2
P1

18K 0R
F-
F-

8K2 SW921 7 D- 4
2 HP-L
D+ 3 D-

104
3

15K
15K
V- 2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
R903 15R 49

47U/16V
47U/16V

CLOCK 2 3 AGND 1
11 LG EQ FB903 4 D+
R945 5 C919
C905

104

C928 103

C927 103
4 HP-R
R901 15R
R902 15R

104

C918
R905 R941 220U/10V 5 USB_GND
C904 5K6 3 3.3uH
8K2 SW917
100K 104 SW922

R948
R949
C901
C903

TO MAIN PCB ESS

C902

4
TIMER GND
R940 USER EQ
R944 GND FB902
GND R904 5K6 1
F- 100K 3K3
10
GND
P901
SW916 SW923
HP JACK(3.5mm TC38-103-01)
100M 70R
USB/PHONE BOARD
GND FM-6038TM2-5A
DISCSKIP
GR15
GR14
GR13
GR12
GR11
GR10
GR09
GR08
GR07
GR06
GR05
GR04
GR03
GR02
GR01

R939 XDSS/MP3 OPT.

R900 R943
P20
P19
P18
P17
P16
P15
P14
P13
P12
P11
P10
P09
P08
P07
P06
P05
P04
P03
P02
P01

F+
SW937
V+

VFD 39K 3K3

3 V-
2 IP

0 3K3
MIC BOARD TO MAIN PCB ESS
1
47U/16V

6
330K
P17
P16
P15
P14
P13
P12
P11
P10
P09
P08
P07
P06
P05

P04
P03
P02
P01

100R
47P

5 CN905
104

KEY1-1 1
DGND 2

SW936
KEY3-1 1
R906 DGND 2
CN903

CN902

9 MIC_SENS
100R 4 1 MIC_SENS
9
R950 22K
C907

MIC_OUT
C908

2
C906

2 MIC OUT
R907
R908
26
25
24
23
22
21
20
19
18
17
16
15
14

GND

C922
3 3 GND
R963
SG5/KS5
SG8/KS8
SG7/KS7
SG6/KS6
SG17

SG9/KS9
SG11/KS11
SG16/KS16
SG15/KS15
SG14/KS14
SG13/KS13
SG12/KS12

SG10/KS10

+12VA
7 R973 56K R975 4 +12VA
1 KEY1-1

1 KEY3-1

SW935 39K
2 DGND

2 DGND

MARK
CON903

CON902

8 100K
8

682
P18 27 13 C920
SG18 SG4/KS4
P19 9 104 L1
28 12 GND
SG19 SG3KS3 R974 FB2500 100K R4
R962 P20 1
29 11

GND
8 SG20 SG2/KS2 56K
SW934 18K JK903
6
7 30 10 SW908 MIC1
SG21 SG1/KS1 C6
FB901 10uH SW909 5
31 9 R1
SG22
U901
VDD
R924 R R930
AUTO DJ 4
R951 IC1 100uF
16V
47U/16V

32 8 22K R977 220R

SG23 GND
104

R961 PT6324(QFP52)/ET8862 3K3 2K2 2 10K S4308 R6

33 7 R909 82K SW907 SW910 1 NF VCC 6
SW933 8K2 SG24 OSC 1K
R910 3
C910

6 100K
C909

2 GND ALC 5
GR01 34 GR1 K2
6 C3
TUNNG+ TUNNG- C923 R2 47K
R911 100K 7 R976 3 INPUT OUTPUT 4
7 GR02 35 GR2 K1 5 R923 R929 682
1K8 8 100K 104P
GR03 36 GR3 4 2K2 C921
DOUT SW906 BAN57059401 C1 NC
R960 R912 1K SW911 9 R5
GR04 37 GR4 3 104 100K C2
5K6 STB R3
SW932 R913 1
5 GR05 38 GR5 2 1K STOP GND NC C5 C4 220R
DIN SET/CD PAUSE JK904 C8
R914 1K R922 100uF 1uF R7
100P

104P
100P

GR06 39 GR6 CLK

1 R928 MIC2 GND 16V 50V 1M
1K8
1K2 C7
R959 SW905
GR12
GR10
GR11

GR13
GR14
GR15
GR16

C911 22uF
GND
VDD
GR7
GR8
GR9

SW931
VEE

6 3K3 SW912
C926

16V
C925

4 100P GND
GND
PRESET+
40
41
42
43
44
45
46
47
48
49
50
51
52

GR07 R921 PRESET- GND

GND GND GND
R958 GND GND GND 1K2 R927
GR08 SW904
3K3 1K2 SW913
SW930 C913
3 GR09
104 C912 OPEN/CLOSE
GR10 POWER
R915 100K

R920 R939A
104
LED BOARD
104

GR11 R926 R923A R928A R929A R938A

R957 1K2 R926A R927A 471/0805
5 SW903 1K SW914
2K2 GR12 471/0805 471/0805 471/0805 471/0805 471/0805 471/0805 R940A
C915

SW929
2 GR13 471/0805
AUX USB/DEMO CON1001
C914 R919 D916 D915 D914
GR14 R925 D913 D912 D910 D918 D917
47U/50V 1K +12VA 1 BLUE BLUE BLUE BLUE
SW902 BLUE BLUE BLUE BLUE
R956 GR15 1K2
SW915 VOL_LED7 2
SW928 1K8
1 D902 IN4001 D901 IN4001 TAPE VOL_LED6 3

R918 DVD
4 VR901 VOL_LED5 4
1K2
SW901 DGND VOL_LED4 5
R955
SW927 1K2 VOL_LED3 6
ECHO VOL-
TUNER
VOL_LED2 7
A

DGND
VOL_LED1 8
R954 10K
2
1

SW926 VOL_LED8 9
1K2 R916
ECHO VOL+
R917 10K
3 CON906
GND
F+
F-

C916 C917 1 +12VA

100M 70R

R953
100M 600R

100M 600R
100M 600R
100M 600R
100M 600R

100M 600R
100M 600R
100M 600R
100M 600R

SW925 473
100M 70R
100M 70R

473 DGND 2 VOL_LED7

MIC VOL- 1K
Q901 VOL_LED6
3
0R
0R

9014 Q902
4 VOL_LED5
R952 R931 10K 9014
FB907
FB906

GND Q903 5 VOL_LED4

SW924 1K2 R964
FB909
FB918
FB908

9014
FB912
FB913
FB914
FB911
FB910

FB915

2 Q904
FB916
FB919
FB920

MIC VOL+ 47K R932 10K 6 VOL_LED3

9014
Q905 7 VOL_LED2
KEY3 R933 10K
3 9014
10
11
12
13
14
15
16
17
18
19
20
21
22
23

Q906
1
2
3
4
5
6
7
8
9

R934
8 VOL_LED1
2 KEY2 10K 9014
REMOTE-INT

Q907
CON901

VOL_LED8
VOL_LED7
VOL_LED6

VOL_LED8
VOL_LED5
VOL_LED4
VOL_LED3

VOL_LED1

9
VOL_LED2
VFD-DATA

R935
VFD-STB

10K 9014
VFD-CLK

DGND Q908
+12VA

1
VOL+A
VOL-B

DGND
-VKK

+5V6

KEY1
KEY3
F+

GND

9014
F-

CN906 R936 10K

1 KEY2 PCB TO MAIN PCB MICOM

R937 10K TO LED BOARD
R938 10K
LG-MDT355
TO MAIN PCB MICOM DGND MIC/USB/KEY1/2/3/VFD
(2010. 06.14)
A B C D E F G H I J K L M N O P Q R S T

3-39 3-40

Downloaded from www.Manualslib.com manuals search engine

 CIRCUIT VOLTAGE CHART

TEST TEST TEST TEST TEST TEST TEST TEST

PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO.
VOLTAGE(V) VOLTAGE(V) VOLTAGE(V) VOLTAGE(V) VOLTAGE(V) VOLTAGE(V) VOLTAGE(V) VOLTAGE(V)
IC1_ESS8390 22 NC 67 4.74 2 0.01 15 1.61 13 1.92 58 NC 2 3.15
1 3.28 23 2.24 68 4.74 3 0.65 16 2.78 14 GND 59 NC 3 NC
14 3.28 24 0.09 69 4.74 4 0 17 2.03 15 GND 60 GND 4 NC
16 1.45 25 3.26 70 4.74 5 0.39 18 2.21 16 GND 61 NC 5 3.15
30 3.28 26 3.39 71 4.74 6 0 19 5.05 17 GND 62 NC 6 1.58
36 3.28 27 4.32 72 4.74 7 0 20 1.65 18 GND 63 GND 7 4.85
38 1.45 28 4.73 73 4.74 8 GND 21 1.75 19 1.58 64 GND 8 1.58
52 3.28 29 4.85 74 NC 9 0 22 GND 20 1.58 65 3.21 9 1.07
66 3.28 30 4.85 75 4.75 10 4.88 23 1.66 21 GND 66 1.92 10 GND
68 1.45 31 4.85 76 4.83 11 0 24 0.92 22 3.21 67 1.58 11 GND
81 3.28 32 4.85 77 NC 12 1.65 25 3.26 23 1.29 68 1.58 12 3.21
87 3.28 33 NC 78 4.85 13 0.55 26 3.21 24 NC 69 GND 13 GND
89 3.28 34 4.85 79 4.85 14 0.89 27 3.36 25 NC 70 1.59 14 GND
99 3.28 35 NC 80 NC 15 0 28 3.46 26 1.59 71 1.59 15 GND
104 1.45 36 NC 81 NC 16 5.9 29 GND 27 0.38 72 3.21 16 1.58
108 3.28 37 NC 82 NC IC201_WM8738 30 GND 28 GND 73 GND 17 4.85
115 3.28 38 NC 83 NC 1 3.3 IC501 LM1117-1V5 29 3.21 74 1.59 18 1.58
133 3.28 39 GND 84 NC 2 1.66 1 GND 30 NC 75 1.59 19 NC
153 3.28 40 4.85 85 NC 3 1.64 2 1.48 31 NC 76 3.14 20 NC
155 1.45 41 4.83 86 4.83 4 3.18 3 3.28 32 NC 77 NC 21 12.04
156 3.28 42 4.83 87 4.81 5 2.16 IC502 IC M12L128168A-6T 33 NC 78 4.83 22 11.95
158 1.45 43 NC 88 GND 6 2.14 1 3.28 34 1.92 79 4.83 23 11.06
163 3.28 44 NC 89 4.85 7 2.15 3 3.28 35 GND 80 1.92 24 28.4
IC100_ LC87F5NC8A 45 4.76 90 0.13 8 2.15 9 3.28 36 NC 81 GND 25 NC
1 0.13 46 NC 91 0.15 9 4.3 14 3.28 37 NC 82 GND 26 34.9
2 2.42 47 4.76 92 0.15 10 AGND 27 3.28 38 GND 83 GND 27 34.9
3 3.91 48 4.65 93 4.85 11 DGND 43 3.28 39 3.21 84 GND 28 28.4
4 4.17 49 NC 94 4.85 12 1.63 49 3.28 40 1.58 85 GND 29 GND
5 NC 50 4.08 95 NC 13 1.37 IC503 W25Q16 41 1.58 86 1.61 30 GND
6 2.57 51 4.03 96 NC 14 AGND 8 3.29 42 1.92 87 1.65 31 17.3
7 2.81 52 NC 97 NC IC401_IP9011 IC504 FT24C021CS 43 GND 88 1.57 32 34.9
8 4.82 53 5.13 98 2.31 1 2.13 8 3.29 44 GND 89 1.59 33 28.3
9 2.27 54 3.15 99 2.42 2 2.11 IC604_PS9831 45 1.58 90 1.17 34 28.3
10 2.56 55 4.85 100 0.05 3 1.92 1 GND 46 1.58 91 1.92 35 34.9
11 GND 56 GND IC103_T24C16A 4 2.33 2 PLL GND 47 3.21 92 GND 36 17.3
12 2.39 57 4.85 1 GND 5 5.05 3 1.92 48 1.58 93 1.47 37 GND
13 2.42 58 3.94 2 GND 6 1.66 4 3.21 49 1.58 94 3.21 38 GND
14 4.85 59 NC 3 GND 7 1.69 5 GND 50 GND 95 GND 39 17.3
15 4.85 60 NC 4 GND 8 3.27 6 1.92 51 1.58 96 4.85 40 34.9
16 4.85 61 4.75 5 4.9 9 0.86 7 GND 52 1.58 97 GND 41 34.9
17 4.85 62 NC 6 4.9 10 3.27 8 PLL GND 53 GND 98 GND 42 NC
18 NC 63 NC 7 GND 11 3.27 9 GND 54 NC 99 GND 43 11.9
19 0.23 64 NC 8 4.9 12 5.05 10 3.21 55 NC 100 GND 44 11.4
20 NC 65 NC IC200_YD4052 13 3.45 11 GND 56 3.21 IC700_TAS5342A IC701_TAS5342A

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Downloaded from www.Manualslib.com manuals search engine

 MEMO
TEST TEST TEST
PIN NO. PIN NO. PIN NO.
VOLTAGE(V) VOLTAGE(V) VOLTAGE(V)
2 3.15 3 0.01 28 NC
3 NC 4 0.38 29 NC
4 NC 5 GND 30 NC
5 3.15 6 6.51 31 NC
6 1.58 7 0.01 32 NC
7 4.85 8 GND 33 -25.1
8 1.58 9 0.01 34 -25.1
9 1.12 U203_BA3308 35 -25.1
10 GND 1 1.58 36 -25.1
11 GND 2 6.30mV 37 -25.1
12 3.21 3 1.56 38 -25.1
13 GND 4 GND 39 -25.1
14 GND 5 3.25 40 -25.1
15 GND 6 7.12 41 -25.1
16 1.58 7 1.56 42 -25.1
17 4.85 8 6.30mV 43 -25.1
18 1.58 9 1.58 44 -25.1
19 NC U901_PT6324 45 -25.1
20 NC 1 4.77 46 -25.1
21 12.04 2 4.14 47 -25.1
22 11.95 3 4.37 48 -25.1
23 11.06 4 1.14 49 NC
24 28.4 5 0 50 -26.9
25 NC 6 0 51 4.9
26 34.9 7 2.81 52 GND
27 34.9 8 GND
28 28.4 9 4.91
29 GND 10 -17.7
30 GND 11 -21.3
31 17.3 12 -23
32 34.9 13 -23
33 28.3 14 17.6
34 28.3 15 -21.9
IC801_D4558 16 -21.6
1 0.01 17 -24.7
2 0.01 18 -23
3 0.01 19 -24.7
4 -12.3 20 -19.5
5 0.01 21 -23
6 0.01 22 -23
7 0.01 23 -24.7
8 11.79 24 -26.7
U202_BA3126 25 -26.7
1 0 26 -17.6

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 PRINTED CIRCUIT BOARD DIAGRAMS
1. MAIN P.C.BOARD
(TOP VIEW)

3-45 3-46

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 MAIN P.C.BOARD
(BOTTOM VIEW)

3-47 3-48

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 2. SMPS P.C.BOARD
NOTE) Warning
Parts that are critical with respect to risk
of fire or electrical shock.

3-49 3-50

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 3. FRONT P.C.BOARD

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