SERVICE MANUAL

DIGITAL MEDIA RECEIVER

SERVICE MANUAL
2
2012
MA507<Rev.002>

KD-X30E, KD-X30EE, KD-X30EN,

KD-X30EY, KD-X30U, KD-X30UN,
KD-X30UP, KD-X30UT

For EUROPE

COPYRIGHT © 2012 JVC KENWOOD Corporation

Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
Lead free solder used in the board (material : Sn-Cu, melting point : 230 Centigrade)

COPYRIGHT © 2012 JVC KENWOOD Corporation No.MA507<Rev.002>

2012/2
 SPECIFICATION
For EUROPE
AUDIO AMPLIFIER SECTION
Maximum Power Output 50 W per channel
Continuous Power Output (RMS) 20 W per channel into 4Ω, 40 Hz to 20 000 Hz at less than 1% total harmonic distortion.
Load Impedance 4 Ω (4 Ω to 8 Ω allowance)
Frequency Response 40 Hz to 20 000 Hz
Signal-to-Noise Ratio 70 dB
Line-Out or Subwoofer-Out Level/Impedance 2.5V/20 kΩ load (full scale)
Output Impedance ≤ 600Ω
TUNER SECTION
FM Frequency Range 87.5 MHz to 108.0 MHz
FM : 87.5 MHz to 108.0 MHz (For Except EE)
FM-LO : 65.0 MHz to 74.0 MHz (For Except EE)
Usable Sensitivity 9.3 dBf (0.8 µV/75Ω)
50 dB Quieting Sensitivity 16.3 dBf (1.8 µV/75Ω)
Alternate Channel Selectivity 65 dB
(400 kHz)
Frequency Response 40 Hz to 15 000 Hz
Stereo Separation 40 dB
AM Frequency Range MW : 531 kHz to 1 611 kHz
LW : 153 kHz to 279 kHz
Sensitivity/Selectivity MW : 20 µV/40 dB,LW : 50 µV
USB SECTION
USB Standard USB 1.1, USB 2.0
Data Transfer Rate (Full Speed) Max. 12 Mbps
Compatible Device Mass storage class
Compatible File System FAT 32/16/12
Playable Audio Format MP3/WMA
Maximum Supply Current DC 5 V 1A
GENERAL
Power Requirement (Operating Voltage) DC 14.4 V (11 V to 16 V allowance)
Grounding System Negative ground
Allowable Operating Temperature 0°C to +40°C
Dimensions Installation Size approx. 182 mm × 52 mm × 158 mm
(W × H × D) Panel Size approx. 188 mm × 59 mm × 15 mm
Mass 0.8 kg (excluding accessories)
• Subject to change without notice.

(No.MA507<Rev.002>)2/12
 SPECIFICATION
For ASIA
AUDIO AMPLIFIER SECTION
Maximum Power Output 50 W per channel
Continuous Power Output (RMS) 20 W per channel into 4Ω, 40 Hz to 20 000 Hz at less than 1% total harmonic distortion.
Load Impedance 4 Ω (4 Ω to 8 Ω allowance)
Frequency Response 40 Hz to 20 000 Hz
Signal-to-Noise Ratio 70 dB
Line-Out or Subwoofer-Out Level/Impedance 4.8V/20 kΩ load (full scale)
Output Impedance ≤ 600Ω
TUNER SECTION
FM Frequency Range 87.5 MHz to 108.0 MHz
Usable Sensitivity 9.3 dBf (0.8 µV/75Ω)
50 dB Quieting Sensitivity 16.3 dBf (1.8 µV/75Ω)
Alternate Channel Selectivity 65 dB
(400 kHz)
Frequency Response 40 Hz to 15 000 Hz
Stereo Separation 40 dB
AM Frequency Range 531 kHz to 1 611 kHz
Sensitivity/Selectivity 20 µV/40 dB
USB SECTION
USB Standard USB 1.1, USB 2.0
Data Transfer Rate (Full Speed) Max. 12 Mbps
Compatible Device Mass storage class
Compatible File System FAT 32/16/12
Playable Audio Format MP3/WMA
Maximum Supply Current DC 5 V 1A
GENERAL
Power Requirement (Operating Voltage) DC 14.4 V (11 V to 16 V allowance)
Grounding System Negative ground
Allowable Operating Temperature 0°C to +40°C
Dimensions Installation Size approx. 182 mm × 52 mm × 158 mm
(W × H × D) Panel Size approx. 188 mm × 59 mm × 15 mm
Mass 0.8 kg (excluding accessories)
• Subject to change without notice.

(No.MA507<Rev.002>)3/12
 SECTION 1
PRECAUTION
1.1 Safety Precautions
(1) This design of this product contains special hardware and voltmeter.
many circuits and components specially for safety purpos- Move the resistor connection to each exposed metal
es. For continued protection, no changes should be made part, particularly any exposed metal part having a return
to the original design unless authorized in writing by the path to the chassis, and measure the AC voltage across
manufacturer. Replacement parts must be identical to the resistor. Now, reverse the plug in the AC outlet and
those used in the original circuits. Services should be per- repeat each measurement. Voltage measured any must
formed by qualified personnel only. not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5
mA AC (r.m.s.).
(2) Alterations of the design or circuitry of the product should
AC VOLTMETER
not be made. Any design alterations of the product should (Having 1000
not be made. Any design alterations or additions will void ohms/volts,
the manufacturers warranty and will further relieve the or more sensitivity)
manufacture of responsibility for personal injury or property
damage resulting therefrom. 0.15 F AC TYPE
Place this
(3) Many electrical and mechanical parts in the products have probe on
special safety-related characteristics. These characteris- each exposed
tics are often not evident from visual inspection nor can the 1500 10W metal part.
protection afforded by them necessarily be obtained by us-
ing replacement components rated for higher voltage, watt- Good earth ground
age, etc. Replacement parts which have these special
safety characteristics are identified in the Parts List of Ser-
vice Manual. Electrical components having such features 1.2 Warning
are identified by shading on the schematics and by ( ) on (1) This equipment has been designed and manufactured to
the Parts List in the Service Manual. The use of a substitute meet international safety standards.
replacement which does not have the same safety charac- (2) It is the legal responsibility of the repairer to ensure that
teristics as the recommended replacement parts shown in these safety standards are maintained.
the Parts List of Service Manual may create shock, fire, or (3) Repairs must be made in accordance with the relevant
other hazards. safety standards.
(4) It is essential that safety critical components are replaced
(4) The leads in the products are routed and dressed with ties, by approved parts.
clamps, tubings, barriers and the like to be separated from (5) If mains voltage selector is provided, check setting for local
live parts, high temperature parts, moving parts and/or voltage.
sharp edges for the prevention of electric shock and fire
hazard. When service is required, the original lead routing
and dress should be observed, and it should be confirmed 1.3 Caution
that they have been returned to normal, after reassem- Burrs formed during molding may be left over on some parts
bling. of the chassis.
Therefore, pay attention to such burrs in the case of pre-
(5) Leakage shock hazard testing forming repair of this system.
After reassembling the product, always perform an isola-
tion check on the exposed metal parts of the product (an-
tenna terminals, knobs, metal cabinet, screw heads, 1.4 Critical parts for safety
headphone jack, control shafts, etc.) to be sure the product
is safe to operate without danger of electrical shock.Do not In regard with component parts appearing on the silk-screen
use a line isolation transformer during this check. printed side (parts side) of the PWB diagrams, the parts that are
• Plug the AC line cord directly into the AC outlet. Using a printed over with black such as the resistor ( ), diode ( )
"Leakage Current Tester", measure the leakage current and ICP ( ) or identified by the " " mark nearby are critical
from each exposed metal parts of the cabinet, particular- for safety. When replacing them, be sure to use the parts of the
ly any exposed metal part having a return path to the same type and rating as specified by the manufacturer.
chassis, to a known good earth ground. Any leakage cur- (This regulation dose not Except the J and C version)
rent must not exceed 0.5mA AC (r.m.s.).
• Alternate check method
Plug the AC line cord directly into the AC outlet. Use an
AC voltmeter having, 1,000Ω per volt or more sensitivity
in the following manner. Connect a 1,500Ω 10W resistor
paralleled by a 0.15µF AC-type capacitor between an ex-
posed metal part and a known good earth ground.
Measure the AC voltage across the resistor with the AC

(No.MA507<Rev.002>)4/12
1.5 Preventing static electricity
Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser
diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.
1.5.1 Grounding to prevent damage by static electricity
Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as laser products.
Be careful to use proper grounding in the area where repairs are being performed.
(1) Ground the workbench
Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the
traverse unit (optical pickup) on it.
(2) Ground yourself
Use an anti-static wrist strap to release any static electricity built up in your body.

(caption)
Anti-static wrist strap

1M
Conductive material
(conductive sheet) or iron palate

(No.MA507<Rev.002>)5/12
 SECTION 2
SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

SECTION 3
DISASSEMBLY
3.1 Main body (Used model: KD-X30E) (2) Remove the 2 screws B attaching both sides of the Top
3.1.1 Removing the Bottom chassis (See Fig.1) chassis. (See Fig.4)
(1) Disengage the 7 hooks a engaging the Bottom chassis.
(2) Slide the Bottom chassis backward to remove it.

Fig.4
(3) Remove the 3 screws C attaching the Electric unit. (See
Fig.5)
hook a
hook a C

hook a
Fig.1
3.1.2 Removing the Front pane assy (See Fig.2)
(1) Disengage the 4 hooks b engaging both sides of the Front
pane assy.

hook b

Fig.2 Fig.5

3.1.3 Removing the Electric unit (See Fig.3, 4 and 5) 3.1.4 Removing the Switch unit (See Fig.6)
(1) Remove the 1 screw A attaching the Rear bracket. (See (1) Remove the Volume knob.
Fig.3) (2) Remove the 10 screws D attaching the Switch unit.

A D

D
Fig.3 Fig.6

(No.MA507<Rev.002>)6/12
 SECTION 4
ADJUSTMENT
4.1 Service Test mode
Default status immediately after the mode activation
Operating Key : [MENU] → [DOWN] (7sec)
4.1.1 Mode content
Syscon shall display the following information after entering this mode. The operation shown below shall be workable.
Display content Detail

S R V T E S T The display is released when another operation is executed.

4.1.2 Common operation mode for all sources.

„means Press aud hold.
Operation Display content Detail
CD error Transit to CD error information display mode
EQ information
display mode
Syscon version # = Display of destination.
display J = USA
R = EUROPE
MENU S Y S # @ @ @ E = EASTERN-EUROPE
U = OTHERS(e.g. ASIA)
@@@ = Syscon version number
Power ON 00 - 50 are displayed in " XX ".
duration display P O N T M 0 H X X For less than 1 hour, the display is indicated
UP per 10 minutes.
00001 - 10922 are displayed in " XXXXX ".
P O N T M X X X X X MAX 10922 (hours).
Disc operation 00 - 50 are displayed in " X X ".
duration display C D T M 0 H X X For less than 1 hour, the display is indicated
DOWN per 10 minutes.
00001 - 10922 are displayed in " XXXXX ".
C D T M X X X X X MAX 10922 (hours).
BRIGHTNESS Disc eject
/ TAG / iPod / number of times E J C N T X X X X X 00001 - 99999 are displayed in "XXXXX"
SD
„BRIGHTNESS Disc eject
Clear Disc Eject number of times by pressing
/ TAG / iPod / number of times E J C N T 0 0 0 0 0 for 2 seconds when it is displayed.
SD clear
Force Power P O F F - - - No force Power OFF
OFF information
 display Force Power OFF due to Syscon-Panel
P O F F P N L commnication error.
Will not show in JK12 Models.
Force Power Clear Force Power OFF information by
„ OFF information P O F F - - - pressing for 2 seconds when it is displayed.
clear Will not show in JK12 Models.

(No.MA507<Rev.002>)7/12
4.1.3 CD error information display mode
Operation Display content Detail
CD mecha error Mecha error history 1,2,3 (latest)
log display M E C H A E R # X X # = History No. (1,2,3)
XX : kind of errors, " -- " when there is none.
00: No Error
04: TOC read Error
05: Unknown CD
06: Heat Error
0A: Update Error
0D: Hold Error
15: Unknown Disc
99: Mecha Error
CD load error Load error switch 1,2
information L O A D E R # X X # = History No. (1,2)
display XX: numbers of errors, " -- " when there is
none
History No. 2 is un-used
CD eject error Eject error switch 1,2,3,4
information E J E C T E R # X X # =History No. (1,2,3,4)
display XX: numbers of errors, " -- "when there is
none
History No.3 is un-used
Move
History No.1: Eject before SW1 is on.
between DISP
History No.2: Eject until SW1 and SW2 is
(Forward
on.
search)
History No.3: Eject between SW2 on and
item with
Eject end
/
C N T L O S E CD-DA error count number information

CD-DA error count numbers

C D D A X X XX: numbers of errors and " -- " when there
CD time code is none
error count Can only be checked via debugger by jap
information member
display (count
CD-ROM (compressed file) error count numbers
skip) C D R O M X X XX: numbers of errors and " -- " when there is
none
Can only be checked via debugger by jap
member
CD time code error count information (count
C N T S T A Y not updated) mode display
CD time code
CD-DA error count numbers
error count C D D A X X XX: numbers of errors and " -- " when there is
information
none
display (no count
update) CD-ROM (compressed file) error count numbers
C D R O M X X XX: numbers of errors and " -- " when there is
none
„EQ CD error CD error information all clear Clear CD error information by pressing for 2
informationclear seconds when it is displayed.
M E C H A E R 1 - -
EQ Mode release CD error information display mode release Back to default status, All lights on

(No.MA507<Rev.002>)8/12
4.2 DC error information mode
* The receiver is connected with the DC power supply (with the power supply turned off).
Operating Key : [MENU] → [UP] → [DC power supply turned ON]
4.2.1 Mode content
Syscon shall display the following information after entering this mode. The operation shown below shall be workable.
Display content Detail
When DC error is detected (in case that one of capacitor leakage, wrong
D C E R R connection or other detection is found).
When DC error is not detected (in case that none of capacitor leakage, wrong con-
D C O K nection or other detection is found).

4.2.2 Mode operation specification

„means Press aud hold
Operation Display content Detail
UP DC ERR1 When wrong connection & DC error in other detection
D C 1 E R R
display duration is detected.
When wrong connection & DC error in other detection
D C 1 O K
duration is not detected.
„UP DC ERR1 Clear detection information when wrong connection & DC er-
D C 1 O K
clear ror in other detection duration is displayed.(Clear data flash)
DOWN DC ERR2 Display detecting number of times in capacitor leakage
D C 2 4
display detection duration (0~4)
„DOWN DC ERR2 Clear number of times for detection information in ca-
D C 2 0
clear pacitor leakage detection duration.(Clear data flash)

(No.MA507<Rev.002>)9/12
4.3 DC Offset error description 4.3.5 Manipulate after detect DC Offset
4.3.1 DC Offset detection circuit design • If detected error 10 consecutive times, and 10th error occurred
• Purpose: in "Mis-connect detection period", judge as "Mis-connect".
To prevent breakdown, burning and emitting smoke from cus- • If detected error 10 consecutive times, and 10th error occurred
tomer's car speaker when occur DC offset between speaker in "Capacitor leak detection period", judge as "Capacitor leak ".
output "+" and "-". • If detected error 10 consecutive times, and 10th error occurred
• Target: in "Other detection period" and detected another 10 errors con-
Detect DC offset, then stop the Power Amp operation and shift secutively, then judge as "Other".
to specified condition. • If judge as "Mis-connect".
- turn off speaker output.
4.3.2 Possible causes of DC offset at speaker output lines - display "MIS WIRING" → "CHK WIRING" → "THEN RESET"
(1) Mis-connection for Speaker output for example touch to car → "UNIT".
body or battery line. - key access disable except button of Eject, Reset and service
(2) Current leak of coupling capacitor for Power IC input. mode
(3) Current leak of Ac-GND capacitor for Power IC Ac-GND. - record error in EEPROM "DC1 ERR"
(4) Capacitor shorted of above parts due to foreign object. - Set is able to be recovered by Reset button.
E-Vol • If judge as "Capacitor leak ".
Audio Pwr Amp
C-in - turn off speaker output.
In 1
C-in
- display "WIRING" → "CHK WIRING" → "THEN RESET" →
In 2 "UNIT".
C-in
In 3 - key access disable except button of Eject, Reset and service
C-in
In 4 mode
- record error in EEPROM "DC2 #" (# means counter number)
C-ac1 C-ac2
- Set can be recovered by pressing the Reset button before
AcGnd
the capacitor leak error counter reach "DC2 4".
C-tc After that, only clear the counter back to "0" can recover the
Sw5V
Win_TC
set.
R2 • If judge as "Other" (manipulation same as mis-connect)
R1 Offset Detect
Win_In Out 4.3.6 How to clear the DC offset error recorded in EEPROM
C3 Refer to "DC error information mode".
R3
DC Error

R4
Micon
ADC In

4.3.3 Type of checking

4.3.3.1 To detect DC Offset Error
• Mis-connection
- Short any one speaker out line to GND or Vcc
• Capacitor leak
- Parallel 330kΩ to either any one of coupling cap or Ac-GND
cap (to simulate current leakage of capacitor)
- Shorted either any one of coupling cap or Ac-GND cap.
4.3.3.2 To avoid mis-judge music as DC offset error
• Low frequency signal (17Hz or 20Hz) is more prone to cause
mis-detection.
- Play 17Hz (or 20Hz) signal and make sure micon will not de-
tect and judge this as happen DC offset error.
4.3.4 Detection Timing chart
2.0sec or more 1.5sec or more 50ms
or more
0.7sec or more
0.8sec 1.0sec

PWIC_STBY

PWIC_MUTE

AUD_MUTE

Missconnect Capacitor leak Other (miss detection etc.)

detection period detection period detection period

(No.MA507<Rev.002>)10/12
 SECTION 5
TROUBLESHOOTING

This service manual does not describe TROUBLESHOOTING.

(No.MA507<Rev.002>)11/12
JVC KENWOOD Corporation
Car Electronics Business Group 2967-3, Ishikawa-machi, Hachioji-shi, Tokyo, 192-8525, Japan

(No.MA507<Rev.002>)
Printed in Japan
VSE