Mini Hi-Fi system

CONTENTS
Technical Specification........................................ ......... .. 1-1..1-10
Version Variation....................................................................................... 2-1
Safety Instruction...................................................................................... 2-2
Block Diagram........................................................................................... 3-1
Wiring Diagram..........................................................................................3-2
Circuit Diagram.................................................................................. 4-1..4-4
LCD+KEY Board Top Layout ....................................................................5-1
LCD+KEY Board Bottom Layout................................................................5-2
Amp Board Top & Bottom Layout.............................................................5-3
CD+LINE IN+USB Board Top Layout........................................................5-4
CD+LINE IN+USB Board Bottom Layout...................................................5-5
Explode Drawing........................................................................................6-1
Disassembly Drawing........................................................................7-1...7-5

©Copyright 2013 Philips Consumer Electronics B.V. Eindhoven, The Netherlands

All rights reserved. No part of this publication may be reproduced, stored in a retrieval
system or transmitted, in any form or by any means, electronic, mechanical, photocopying,
or otherwise without the prior permission of Philips.

Published by LZ 1325 Subject to modification 3140 038 60600

Version 1.0
 1-1
TECHNICAL SPECIFICATION

DEPICTION Pos Description Page

FRONT CABINET
1 OPEN/CLOSE (BUTTON)
2 ALBUM PRESET ˇ (BUTTON)
3 (BUTTON)>>| (BUTTON)
4 TUNER (BUTTON)
5 AUX/MP3 LINK (BUTTON)
  6 (BUTTON)MAX SOUND (BUTTON)
  7 DSC (BUTTON)
8 USB (JACK)
  9 POWER ON/OFF (BUTTON)
 10 ALBUM PRESET ˉ

11 STOP (BUTTON)
  12 DISC (BUTTON)
13 USB (BUTTON)
  14 VOLUME (KNOB)
15 DBB (BUTTON)
16 MP3 LINK(JACK)
 17 PLAY (BUTTON)
 18 |<< (BUTTON
19 TUNER (BUTTON)
 




27
28
29
30
CABINET

Diemensions with Boxes ( wxhxd) W610xD247xH313mm Material : HIPS / ABS / PMMA

Diemensions without Boxes ( wxhxd ) W220xD247xH313 Finshing : Chrome Plate
Weight ( inclusive packing )?Kg Units in Masstercarton
Weight ( exclusive packing & batery )??Kg Units in Dealercarton

Remarks :
1

Remark :

GENERAL PART 1 - FRONT PANNEL SPECICFICATION

Class No Ver Issued Date

FWM205 MICRO SYSTEM 1

2
2013-6-19

3
NAME : Y.F.LIU 10 SH 190 - 1 A4
CHECK: CS Heung DATE :2013/06/19 YUSAN INDUSTRIES LTD
 1-2
TECHNICAL SPECIFICATION

DEPICTION Pos Description Page

1 AM ANTENNA SOCKET
2 F.M. PIG TAIL ANTENNA
3 Left / Right Speaker Socket
4 AUX IN JACK
5 A.C. Voltage Selector
6
7
8
 9
 10
 11
12
13
14
15
16
17
18
19
20
  21
22
23
24
25
26
CABINET

Diemensions with Boxes ( wxhxd ) Material :HIPS / ABS / PMMA

Diemensions without Boxes ( wxhxd ) L730xW348xH275 Finshing :Chrome Plate
Weight ( inclusive packing )?Kg Units in Masstercarton
Weight ( exclusive packing & batery ?Kg Units in Dealercarton

GENERAL PART 1 - BACK PANNEL SPECICFICATION

Class No Ver Issued Date
2013-6-19
FWM205 MICRO SYSTEM
1
2
3
NAME : Y.F.LIU 10 SH 190 - 2
CHECK: CS Heung DATE : 2013/06/19 YUSAN INDUSTRIES LTD
 1-3
TECHNICAL SPECIFICATION

GENERAL DESCRIPTION
MP3-USB Mini Hi Fi System with Digital PLL Tuner , CD-MP3, 30 W *2 /per channel Universal Class D Power Amplifier
Aux In,mp3 paly in , Remote Control

LIFETIME : 7 Years

Class Tuner Supply + Amplifier Loudspeaker Boxes USB Clock CD / MP3

I X
II X X X X
III
Page 8 4,5 4 9 6 7
SAFETY requirements
Version Safety EMC
77 EN 60065

RADIATION / IMMUNITY requirments ( EMC )

CLIMATIC requirements
ALL climates : + 5 Dregree till + 35 Degree
MODERATE climates : + N.A till N.A Degree
PERFORMANCE CLASSES

POWER SUPPLY
MAINS ( A.C. ) 127/230 Vac
Version /77
Voltage Selection YES
Frequency 60/50Hz

POWER CONSUMER
FWM205/77
Stadby : < = 8W
( DEMO mode " OFF " ) , NOM. A, INPUT
Maximum : /
@ 1/8 Prated , NOM. A, INPUT ?W (264V)
ECO Power mode : /
Q and R according to Product Division Rules
Quality : 0.4 % ( Major ) 1.5 % ( Mirror )
Reliability : 2.0 % ( C 42 )
Tested according to General Test Instruction refer to PHILIPS standary ( UAN -D1591 )
Measured according to PHILIPS standary ( UAN - L1059 ) unless other wise stated
All not mentioned date, please refer to PHILIPS standary ( XUW - 0010 - jun 2001 )
DERIVED REMARKS APPROBATION

Remarks
* 77 power out 30W * /per channel

GENERAL PART 1 - GENERAL SPECICFICATION

Class No Ver Issued Date
1 2013-6-19
FWM205 MICRO SYSTEM 2
3
NAME : Y.F.LIU 10 SH 190 - 3 A4
CHECK: CS Heung DATE :2013/06/19 YUSAN INDUSTRIES LTD
 1-4
TECHNICAL SPECIFICATION

TECHNIAL DESCRIPTION

Total power 60W, matching SPEAKER of 30W x 2 channel 4 ohm load.

GENERAL PART
OUTPUT stage Protection : Yes Temperature : YES Shorcircuit : Yes
LoudSpeaker D.C. Protection : Yes.

INDICATORS
Standby Mode Indicator : LCD display Clock active
ECO Mode Indiicator : LCD turns off, ECO - Standby LED turn on (Only for 12/05/37)

ELECTRICAL DATA
DSC : Rock, Jazz, Optimal, Techno Channel Differencer at -46dB 3 dB
DBB OFF Hum ( Volume Minimun - ) < 0.5 μW
SIS : N/A Residual Noise ( Volume Minimun ) <0.06 μW
VAC : N/A Channel Separation ( at 1 kHz ) ı 35 dB
WOOX : N/A Signal / Noise ( weighted ) ı 55 dB

INTERCONNECTS

Input Sensitity(±2 dB)rated ouput power at 1 kHz and 10kHz. Line Output Voltage ( *1 )

Tuner : FM MODE 75KZH -CD 6dB Line Out ( Left / Right ) N.A
CD : 0 dB track ( Audio Disc 1, Trk 35 ) Subwoofer Out N.A
USB : 0 dB track ( 1K 0dB) Headphone 700mV, RL = 32˟
AUX : Nor:2000mV Digital Coaxial Out N.A
TAPE : NC Booster Out N.A
mp3 in : Nor:500mV Lim: 350mV ~ 800mV Digital Coaxial Out N.A

OUTPUT POWER ( * 1ch ) At THD = 10% (Measured with 20Hz-22KHz filter),

Power output 2 channel 30W*2 Measure 1ch

Rated Impedance :4 ohm

Remarks

( *1 ) Electrical parameters are to be measuremend at specker terminals across 4 Ohm load ( pure resistor )
with rated input signal in AUX mode; DSC OFF mode with DBB OFF
IS off unless specified otherwise

GENERAL PART 1 - TECHNAICAL SPECICFICATION

Class No Ver Issued Date
1 2013-6-19
FWM205 MICRO SYSTEM 2
3
NAME : Y.F.LIU 10 SH 190 - 4 A4
CHECK: CS Heung DATE : 2013/06/19 YUSAN INDUSTRIES LTD
 1-5
TECHNICAL SPECIFICATION

AUDIO SIGNAL PROCESSING

Micro Hi-Fi System with PLL Tuner ,USB, CD-MP3, 30W*2 channel (1speaker load) Class D Digital Power Amplifier
1) DSC ( Digital Sound Control )
Input sinewave 2000mV at 1kHz to R/L channel of AUX-IN socket
Set DSC to Flat mode
Adjust volume to obtain 500mW across 4 ohm load at 1ch speaker ouput
The 500mW will be used as 0dB reference
Inject sinewave 2000MV to AUX - IN socket with frequencies indicated below :
Inject sinewave 500MV to MP3-LINK socket with frequencies indicated below :
Tabel 1a ( Tolerance ± 3dB )
DSC Modes with DBB Off
Frequency
JAZZ DBB Off ROCK DBB Off TECHNO DBB ON OPTIMAL DBB ON
100 Hz -5dB +5 dB -2 dB + 5 dB
1 kHz 0 + 2 dB -2 dB 0
10 kHz +2dB + 6 dB -4 dB 0dB

2) DBB ( Dynamic Bass Boot )

Play CD testing signal of 1KHZ

Set DSC to FLAT mode and switch off DBB
Adjust volume level will be as 0 dB reference.

Tabel 2 ( Tolerance ± 3dB )

Frequency DBB OFF DBB ON

100HZ 0 +5dB

Remarks

GENERAL PART 1 - AUDIO SIGNAL SPECICFICATION ( 1 )

Class No Ver Issued Date
1 2013-6-19
FWM205 MICRO SYSTEM 2
3
NAME : Y.F.LIU 10 SH 190 - 5 A4
CHECK: CS Heung DATE : 2013/06/19 YUSAN INDUSTRIES LTD
 1-6
TECHNICAL SPECIFICATION

TECHNIAL DESCRIPTION

SOFTWARE IMPLEMENTED CLOCK / TIMER FUNCTION WITH 32.768Khz QUARTZ OSCILLATOR.

GENERAL PART

Timer Setting : Clock and Timer

Timer Wakeup Mode : LAST SETTING (MODE)
Remarks Time Setting : for 24hrs (05/12/98/55/79/96) ,for 12 hrs (37/ )
Volume at Wakeup : Last Setting
1RRI7LPHU6HWWLQJV : 1
&ORFN$FFXUDF\ : Normal: 1 sec/day Limit : 2 sec/day

,1',&$7256
'LVSOD\7\SH /&'

Remark

CLOCK / TIMMER SPECICFICATION

Class No Ver Issued Date
1 2013-6-19
FWM205 MICRO SYSTEM 2
3
NAME : Y.F.LIU 10 SH 190 - 6 A4
CHECK: CS Heung DATE : 2013/06/19 YUSAN INDUSTRIES LTD
 1-7
TECHNICAL SPECIFICATION

TECHNIAL DESCRIPTION

CD + MP3 - Part Specifications

CD mechnism refer to Philips standard specification

GENERAL PART

Measurement are directly done at the connector on CDC board

Extern
Description Nom Lim Unit
Filter
Output Resistance No / / Ohms
Output Voltage - Unloaded ( 0dB , 1 kHz ) No / / Vrms
Channel Unbalance YES 0 -3 dB
Frequency Response ( 125 Hz - 16 kHz ) YES 0 -3 dB
Signal to Noise Ratio ( Unweighted ) Yes 60 50 dB
Signal to Noise Ratio ( A - weighted ) Yes 65 55 dBA
Crosstalk ( 1kHz ) Yes 60 50 dB
Crosstalk ( 125Hz to 16kHz ) No 36 30 dB
Hum & Noise ( *1 ) No 400 500 nW
Emphasis - / / /

Remark

CD / MP3 SPECICFICATION
Class No Ver Issued Date
1 2013-6-19
FWM205 MICRO SYSTEM 2
3
NAME : Y.F.LIU 10 SH 190 - 7 A4
CHECK: CS Heung DATE :2013/06/19 YUSAN INDUSTRIES LTD
 1-8
TECHNICAL SPECIFICATION

TECHNIAL DESCRIPTION

TUNER using Digital PLL Tuner SI4730D60

GENERAL PART

WAVE RANGE TOLERANCE TUNING GRID

FM 87.5 - 108 MHz 50KHZ

MW 530 - 1700 kHz 10KHz

AERIAL
FM : PIGTAIL ANT 1200MM
MW : AM LOOP ANTENNA AH42-20001P-A D145x120mm

INDICATORS

ELECTRICAL DATA

A.M Nom Limit Unit F.M. Nom Limit Unit

- 3 dB Limiting Point / / dBf
Channel Unbalance : 0 -3 dB Channel Unbalance : 0 -3 dB
AGC Figure of Merit : 30 25 dB Distortion ( RF 1mV, Frq Dev.75 kHz ) : 2 3 %
Distortion ( RF 50mV, M 80% ) : 3 5 % Stereo - 46 dB Quieting : 46 49 dBf
IF / / kHz Crosstalk (RF1mV, Freq Dev.40kHz ) : 25 18 dB
IF / / MHz
Search tuning sensitivity 60 72 dBV/m Search tuning sensitivity 28 37 dBf
Selectivity
Image Rejection IF Rejection
Wave Range Noise Limited Sensitivity 26 dB Large Signal S3 / S9 / 300kHz
dB dB
dB
Nom. 1500uV/M / / 1000mV/M /
MW 600 kHz
Lim. 4000uV/M / / 500mV/M /
Nom. 1500uV/M / / 1000mV/M /
MW 1400 kHz
Lim. 4000uV/M / / 500mV/M /

Nom. 18dBf / / 116 dBf 30

FM 98 MHz
Lim. 22dBf / / 108 dBf 25

Remarks

TUNER SPECICFICATION
Class No Ver Issued Date
1 2013-6-19
FWM205 MICRO SYSTEM 2
3
NAME : Y.F.LIU 10 SH 190 - 8 A4
CHECK: CS Heung DATE : 2013/06/19 YUSAN INDUSTRIES LTD
 1-9
TECHNICAL SPECIFICATION

TECHNIAL DESCRIPTION

USB

Measurment are directly done at the connector on the board

GENERAL PART

Measurement are directly done at the connector on CDC board

Description Specification
Output Resistance < = 1.5 kOhm
Output Voltage RL = 33 k ohm ( )dB, 1 Khz ) 830mVrms +/- 1.5dB
Channel Unbalance < = +/- 3 dB
THD + Noise ( 0dB, 1Khz ) <= 0.7 %
Channel Crosstalk ( 100Hz - 16,000 Hz ) >= 35 dB
( 0 dB, 1 KHz ) >= 40 dB
Signal to Noise Ratio ( 0dB,1kHz ) >= 65dBA ( A - weighted )
Frequency Response ( +/- 3dB ), reference 1kHz 100Hz - 10kHz

Description Specification

Remarks :

USB SPECICFICATION
Class No Ver Issued Date
1 2013-6-19
FWM205 MICRO SYSTEM 2
3
NAME : Y.F.LIU 10 SH 190 - 9 A4
CHECK: CS Heung DATE : 2013/06/19 YUSAN INDUSTRIES LTD
 1-10
TECHNICAL SPECIFICATION

TECHNIAL DESCRIPTION

AUX IN

AUX Part
Nom. Limit Condition
10% THD Output Power 60W 54W 2000mV 1KHz input
SNR unwtd. 60dB 50dB 2000mV 1KHz input
SNR wtd. dBA 65dBA 55dBA 2000mV 1KHz input
Crosstalk (1KHz) 60dB 50dB 2000mV input
Crosstalk (10KHz) 60dB 50dB 2000mV input
Frequency response (-3dB) 100 to 10KHz (overall) 2000mV input
THD (1KHz, 0dB) 2% 3% 2000mV 1KHz input

MP3 LINK
Nom. Limit Condition
10% THD Output Power 60W 54W 500mV 1KHz input
SNR unwtd. 60dB 50dB 500mV 1KHz input
SNR wtd. dBA 65dBA 55dBA 500mV 1KHz input
Crosstalk (1KHz) 60dB 50dB 500mV input
Crosstalk (10KHz) 60dB 50dB 500mV input
Frequency response (-3dB) 100 to 10KHz (overall) 500mV input
THD (1KHz, 0dB) 2% 3% 500mV 1KHz input

Description Specification

Remarks :

USB SPECICFICATION
Class No Ver Issued Date
1 2013-6-19
FWM205 MICRO SYSTEM 2
3
NAME : Y.F.LIU 10 SH 190 - 10 A4
CHECK: CS Heung DATE : 2013/06/19 YUSAN INDUSTRIES LTD
 2-1
VERSION VARIATION
Type /Versions: FWM205

Service policy /77

Board in used:
LCD+KEY BOARD M+C
AMP BOARD M+C
CD+LINE IN+USB BOARD M+C

Type /Versions: FWM205

Features Feature diffrence /77
RDS
VOLTAGE SELECTOR
ECO STANDBY - DARK

* TIPS : C -- Component Lever Repair.

M -- Module Lever Repair
-- Used
 2-2
SAFETY INSTRUCTION
NL WAARSCHUWING
GB WARNING ESD
Alle IC’s en vele andere halfgeleiders zijn
All ICs and many other semi-conductors are gevoelig voor electrostatische ontladingen
susceptible to electrostatic discharges (ESD). (ESD).
Careless handling during repair can reduce life Onzorgvuldig behandelen tijdens reparatie kan
drastically. de levensduur drastisch doen verminderen.
When repairing, make sure that you are Zorg ervoor dat u tijdens reparatie via een
connected with the same potential as the mass polsband met weerstand verbonden bent met
of the set via a wrist wrap with resistance. hetzelfde potentiaal als de massa van het
Keep components and tools also at this apparaat.
potential. Houd componenten en hulpmiddelen ook op
ditzelfde potentiaal.

F ATTENTION
I AVVERTIMENTO
Tous les IC et beaucoup d’autres
D WARNUNG
semi-conducteurs sont sensibles aux Tutti IC e parecchi semi-conduttori sono
décharges statiques (ESD). Alle ICs und viele andere Halbleiter sind sensibili alle scariche statiche (ESD).
Leur longévité pourrait être considérablement empfindlich gegenüber elektrostatischen La loro longevità potrebbe essere fortemente
écourtée par le fait qu’aucune précaution n’est Entladungen (ESD). ridatta in caso di non osservazione della più
prise à leur manipulation. Unsorgfältige Behandlung im Reparaturfall kan grande cauzione alla loro manipolazione.
Lors de réparations, s’assurer de bien être relié die Lebensdauer drastisch reduzieren. Durante le riparazioni occorre quindi essere
au même potentiel que la masse de l’appareil et Veranlassen Sie, dass Sie im Reparaturfall über collegato allo stesso potenziale che quello della
enfiler le bracelet serti d’une résistance de ein Pulsarmband mit Widerstand verbunden massa dell’apparecchio tramite un braccialetto
sécurité. sind mit dem gleichen Potential wie die Masse a resistenza.
Veiller à ce que les composants ainsi que les des Gerätes. Assicurarsi che i componenti e anche gli utensili
outils que l’on utilise soient également à ce Bauteile und Hilfsmittel auch auf dieses gleiche con quali si lavora siano anche a questo
potentiel. Potential halten. potenziale.

GB
Safety regulations require that the set be restored to its original “Pour votre sécurité, ces documents
condition and that parts which are identical with those specified, doivent être utilisés par des spécia-
be used. listes agréés, seuls habilités à réparer
votre appareil en panne”.

NL
Veiligheidsbepalingen vereisen, dat het apparaat bij reparatie in
zijn oorspronkelijke toestand wordt teruggebracht en dat onderdelen, CLASS 1
identiek aan de gespecificeerde, worden toegepast.
LASER PRODUCT
3122 110 03420

F
Les normes de sécurité exigent que l’appareil soit remis à l’état
d’origine et que soient utiliséés les piéces de rechange identiques
à celles spécifiées.
GB Warning !
Invisible laser radiation when open.
Avoid direct exposure to beam.

D
Bei jeder Reparatur sind die geltenden Sicherheitsvorschriften zu S Varning !
beachten. Der Original zustand des Geräts darf nicht verändert werden;
für Reparaturen sind Original-Ersatzteile zu verwenden. Osynlig laserstrålning när apparaten är öppnad och spärren
är urkopplad. Betrakta ej strålen.

SF Varoitus !
I
Avatussa laitteessa ja suojalukituksen ohitettaessa olet alttiina
Le norme di sicurezza esigono che l’apparecchio venga rimesso näkymättömälle laserisäteilylle. Älä katso säteeseen!
nelle condizioni originali e che siano utilizzati i pezzi di ricambio
identici a quelli specificati.

DK Advarse !
"After servicing and before returning set to customer perform a
leakage current measurement test from all exposed metal parts to Usynlig laserstråling ved åbning når sikkerhedsafbrydere er
earth ground to assure no shock hazard exist. The leakage current ude af funktion. Undgå udsaettelse for stråling.
must not exceed 0.5mA."

Caution: These servicing instructions are for use by qualified service personnel only.
To reduce the risk of electric shock do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so.
 LCD Radio
Driver:ET8861S Si4730
BLOCK DIAGRAM

Loader:EM10
1RNS DA11

DSPALI5673F

CD Driver
3-1

SCA4720 AMP
Vol
To L Speaker
PT2314
TDA7498L
To R Speaker

Flash Memory AUX LINE

IN IN
W25Q80A
Flas h Clock
CONTROLLER USB host FT24C02A D8563
 3-2
WIRING DIAGRAM
 4-1
CIRCUIT DIAGRAM
 4-2
CIRCUIT DIAGRAM
 4-3
CIRCUIT DIAGRAM
 4-4
CIRCUIT DIAGRAM
 5-1
LCD+KEY BOARD TOP LAYOUT
 5-2
LCD+KEY BOARD BOTTOM LAYOUT
 5-3
AMP BOARD TOP & BOTTOM LAYOUT
 5-4
CD+LINE IN+USB BOARD TOP LAYOUT

USB PCB
CD PCB
 5-5
CD+LINE IN+USB BOARD BOTTOM LAYOUT
 6-1
EXPLODE DRAWING
25

29

27
28
30

24

02

18
04 07 05
20
03
19
22 21 32
08 33
31
10
12

14
06

09
17 11 26
16 13
23 15
 7-1
DISASSEMBLY DRAWING

1.Disass-
1. Switch the voltage to 220V on
emble power on the main
unit and take out rear cabinet ,connect 220V AC
CD door
CD door. Power, open the main unit and
switch to CD mode, open the CD
tray .
2. Take out the CD door.
3.Press OPEN/CLOSE to close CD
tray, and pull the AC power.


1.Disassemble 4pcs screws on
top cabinet (left panel).
2.Disass- 2.Electric screw driver
emble (Torque:4.5±0.5kgf/c΃)
screws 
on side
panel

 


1.Disassemble 4pcs screws on
top cabinet (right panel).
3.Disass- 2.Electric screw driver
emble (Torque:4.5±0.5kgf/c΃)
screws on
side panel




 7-2
DISASSEMBLY DRAWING

1.Disassemble 6pcs screws on

  top cabinet (back panel). And
4. Disass-
take out top cabinet.
emble
2.Electric screw driver
screws on
(Torque:4.5±0.5kgf/c΃)
top cabinet
 

 

 

1.Disassemble 5pcs screws on

rear cabinet
5. 2.Electric screw driver
Disass- 
(Torque:4.5±0.5kgf/c΃)
emble
screws
on rear
cabinet 

  1.Disassemble 2pcs screws on

bottom cabinet
6. 2.Electric screw driver
Disasse- (Torque:3.5±0.5 kgf/cm²)
mble
screws
on
bottom
cabinet
 7-3
DISASSEMBLY DRAWING

Disassemble
Disassemble bl
cable
1.Disassemble all kinds of cable.
2. Disassemble the FM ANT and
the wire in transformer with
Soldering iron
4.Separate rear cabinet , front
7. cabinet, bottom cabinet and
place well
Disass-
emble
cable

Disassemble
cable

1.Disassemble 2pcs screws which

fix the CDM parts and then take it
8.Disass off.
-emble 2.Electric screw driver
CDM (Torque˖5.5±0.5 kgf/cm² )
parts
 

1.Disassemble 4pcs screws which

fix the CD board parts.
  2.Electric screw driver
9.
(Torque˖3.5±0.5 kgf/cm²)
Disasse-
mble
main
board

 
 7-4
DISASSEMBLY DRAWING

 
1.Disassemble 4pcs screws ˄fix
CDM bracket˅ then take it off.
2.Electric screw driver
10. (Torque˖4.0±0.5 kgf/cm²˅
Disassem
-ble CDM
bracket

 

  1.Disassemble 4pcs screws ˄fix

CDM ˅ then take it off.
2.Electric screw driver
11.Disas (Torque˖3.0±0.5 kgf/cm²˅
-semble
CDM

 

 
1.Disassemble 9pcs screws ˄fix
12.Disass LCD board ˅
-emble 
 Disassemble 3pcs screws ˄fix
LCD KEY board ˅
boardǃ 
Disassemble 2pcs screws ˄fix
KEY USB board ˅
boardǃ Disassemble 2pcs screws ˄fix
  
USB LINE IN board ˅
boardǃ  Then take them off respectively.
LINE IN 2.Electric screw driver
board  (Torque˖4.0±0.5 kgf/cm²˅

 

 
 7-5
DISASSEMBLY DRAWING

1.Disassemble 6pcs screws

13.  take off adaptor cord ˄fix AMP board ˅ Then take

Disassem off adaptor cord and take off
-ble AMP the AMP board.
board 2.Electric screw driver
(Torque˖4.0±0.5 kgf/cm²˅