Kenwood KDC-MP408U User manual

This product uses Lead Free solder.
This product complies with the RoHS directive for the European market.
© 2008-2 PRINTED IN JAPAN
B53-0614-00 (N)519
KDC-MP408U/MP438U/X492
KDC-MP5039U/MP5539U
KDC-W5041UA/W5041UG
KDC-W5141UAY/W5141UGY
KDC-W5541U/W5641UY
SERVICE MANUAL
CD RECEIVER
TDF SPARE-PANEL
MAIN UNIT NAME TDF PARTS No. TDF NAME
KDC-MP408U Y33-2920-62 TDF-MP84DT
KDC-MP438U Y33-2920-61 TDF-MP84D
KDC-MP5039U Y33-2920-64 TDF-MP5039U
KDC-MP5539U Y33-2920-63 TDF-MP5539U
KDC-W5041UA Y33-2920-66 TDF-W5041UA
KDC-W5041UG Y33-2920-67 TDF-W5041UG
KDC-W5141UAY Y33-2920-66 TDF-W5041UA
KDC-W5141UGY Y33-2920-67 TDF-W5041UG
KDC-W5541U Y33-2920-65 TDF-W5541U
KDC-X492
KDC-MP438U
KDC-MP408U
KDC-MP5539U
KDC-MP5039U
KDC-W5041U
KDC-W5641U
KDC-W5141U
KDC-W5541U
KDC-W5641UY Y33-2920-65 TDF-W5541U
KDC-X492 Y33-2920-60 TDF-84DX
Mounting hardware assy
(J21-9716-03)
Lever
(D10-7012-04) x2
* DC cord
(E30-6428-05)
* Screw set
(N99-1757-15)
* Escutcheon
(B07-xxxx-xx)
* Carrying case
(W01-xxxx-xx)
* DC cord
(E30-6671-05)
* Screw (4x16)
(N84-4016-48)
* Plastic cabinet assy
(A02-2755-13)
* Remote controller assy (RC-547)
(A70-2085-05)
Battery
(Not supplied)
* Depends on the model. Refer to the parts list.
KDC-MP408U : Panel assy (A64-4400-02)
KDC-MP5039U : Panel assy (A64-4402-02)
KDC-W5041Ux : Panel assy (A64-4404-02)
KDC-W5541U : Panel assy (A64-4403-02)
KDC-X492 : Panel assy (A64-4398-02)
KDC-MP438U : Panel assy (A64-4399-02)
KDC-MP5539U : Panel assy (A64-4401-02)
KDC-W5141Uxx : Panel assy (A64-4406-02)
KDC-W5641UY : Panel assy (A64-4405-02)

2
KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/ W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY
BLOCK DIAGRAM
(X16- )
ELECTRIC UNIT (X34- )
SWITCH UNIT
FRONT-END
A320
LX BUS
E-VOL
PRE OUT
PRE OUT
PRE OUT
IC500
IC300
IC601
UP
BACK
RESET
IC BU5V
P-CON
ANT-CON
ACC DET
DIMMER
SURGE DET
BU DET
Q20,21
BU 5V
SW 20V
Q50,51
Q40-43
ILL+B
SW 14V
A8V
SERVO
Q30,31
P.ON5V
Q22,23
P. CON
ANT CON
DIMMER
ACC
BACK UP
LINE
SP OUT(FR)
SP OUT(RL)
SP OUT(FL)
SP OUT(RR)
REMOTE
(SW)
(FRONT)
(REAR)
WIRED
TEL MUTE
IC602
USB5V
BU5V
ILLUMI+B
CN
REMOTE
ED1
FL+B
J1
J660
S3
S1
R74,75
Q140,143
Q150,151
Q170
Q122
C160,R160,R161,D160
Q123
Q120
Q10-12
Q33
4VPRE
Q100,103
AM+B
Q320,321
SW 14V
FDC
USB 5V
SW
HI-SIDE
SERVO
IC60IC230
+B
4VPRE
SW 14V Q101
Q32
SW 14V
Q104
Q105
IC603
J400
J1
WH190
J1
Q367,368,401,402,411,412
DRIVER
MUTE
MUTE
PRE
POWER
IC
SYSTEM
u-COM
ENCODER
ROTARY
ILLUMI
KEY KEY
MATRIX
1/2W
Rx2
FL
RESET
SW
ROM
MEMORY
INSTALLER
DECODER
RDS
CORRECTION
J440
SW5V
AM+B
A8V
A8V
CD
DME1
SOC
IC700
D1.8V
SHIFT
LEVEL
SERVO
IC720
IC680,682
D3.3V IC480
IC600
4VPRE+B
USB5V PAN SW5
USB CN
J4
IC2
AUX CN
J3
NOT USED
E2PROM
FST
FM/AM
AUX (FRONT)
CH
CD
OFFSET
MPX for RDS
RST
PRE MUTE
MUTE
21
for SOC
USB I/F
(IC700)

3
KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/
W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY
DPU1
CD PLAYER UNIT (X32-6130-00) BOARD
MOTHER
(X34- )
EF
A
C
B
TR COIL
FO COIL
APC
IC4
16.934MHz
CLOCK
IC3
LOADING &
MOTOR
DRIVER
MOTOR
SPINDLE
S2
S1
S3
SLED
MOTOR
DM1
DM2
X1
Q1
RF AMP
SERVO
MP3 DECODER
WMA DECODER
1M bit SRAM
PROCESSOR
AAC DECODER
+
+
+
+
+
CR FILTER
CR FILTER
REVERSAL
CIRCUIT
Q13
BU1.5V REG
IC5
IC6
IC11
SW3.3V REG
SW1.5V REG
LOADING &
VREF
12EJE-SW
LOS-SW
LOE-SW
MOTOR
LO/EJ
A.GND
A8V
A,B,C,E,F
TR OUT
FO OUT
DM OUT
FM OUT
A3.3V
LD
SIGNAL
S.GND
S7.5V
FO OUT
TR OUT
DM OUT
FM OUT
DRV MUTE
SO
SRAMSTB
SI
BUCK
CCE
PIO0
SRAMSTB
BUCK
CCE
PIO0
SO
SI
MRST MRST
C88,R82
C87,R83
R-ch
L-ch L-ch
R-ch
ZDET MUTE L/R
D.GND
D GND BU1.5V SW1.5V SW3.3V
AGND
BU5V
P.ON
PD
BSIF LRCK
BSIF ST REQ
BSIF GATE
BSIF BCK
BSIF DATA
BSIF ST REQ
BSIF GATE
BSIF DATA
BSIF BCK
BSIF LRCK
8EJE-SW
BLOCK DIAGRAM
●ELECTRIC UNIT (X34-577x-xx)
Ref. No. Application / Function Operation / Condition / Compatibility
IC10 A8V REF Power Supply Outputs 1.27V.
IC20 D3.3V REG Outputs 1.8V. Power supply for SOC.
IC60 SW REG Outputs 5.0V. Power supply for D5V, FL+B and USB5V.
IC100 OP-AMP Reference supply for 4V pre-out.
IC230 Hi-side SW Overcurrent protection of USB power supply. When pin4 goes Hi, USB5V is ON.
IC300 RDS Decoder Decodes RDS signal.
IC480 E-VOL Controls the source, volume and tone.
IC500 Power IC Amplifies the front L/R and the rear L/R to 50W maximum.
IC600 System μ-COM Controls FM/AM tuner, the changer, CD mechanism, USB, panel, volume and tone.
IC601 Reset IC Lo when detection voltage goes below 3.6V.
IC603 Muting Logic IC Controls logic for muting.
COMPONENTS DESCRIPTION

4
KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/
W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY
Ref. No. Application / Function Operation / Condition / Compatibility
IC680,682 Level Shift Converts 3.3V to 5V.
IC700 SOC (System On Chip) Decodes MP3 or other files of audio/decompression standards by software based
architecture.
IC750 iPod Authentication Coprocessor For iPod authentication.
Q10~12 A8V AVR When Q12’s base goes Hi, A8V AVR outputs 8.0V.
Q20,21 BU5V AVR While BU is applied, BU5V AVR outputs +5V.
Q22,23 P.ON5V When Q23’s base goes Hi, SW5V outputs +5V.
Q30,31 Servo+B AVR When Q31’s base goes Hi, Servo+B AVR outputs 7.5V.
Q32,33,104,105 SW14V When Q33’s (or Q105’s) base goes Hi,SW14V outputs 14V.
Q40~43 ILL+B AVR When Q43’s base goes Hi, ILL+B outputs 10.5V.
Q50,51 Serge Protect for IC1 Output 20V when BU is over 20V.
Q100,103 4VPRE+B Protect When 4VPRE+B is overcurrent, Q100 and Q103 turn Q101 off.
Q101 4VPRE+B AVR When Q100’s base is 8V, 4VPRE+B outputs 7.4V.
Q120 BU DET When the base goes Hi, Q120 is turned on.
Q122 ACC DET When the base goes Hi, Q122 is turned on.
Q123 Serge DET When the base goes Hi, BU DET is turned off.
Q140,143 P-CON SW When Q143’s base goes Hi, AVR outputs 14V.
Q141,142 P-CON Protection When P.CON output voltage decrease is detected, output protection is made.
When P.CON SW is ON, malfunction of Q140 is protected.
Q150,151 P-ANT SW When Q151’s base goes Hi, P-ANT SW outputs 14V.
Q170 Small Lamp DET SW When the base goes Hi, Q170 is turned on.
Q320,321 AM+B When Q321’s base goes Hi, AM+B is output.
Q367,368,401,
Q402,411,412 Pre-out Mute SW When a base goes Hi, pre-out is muted.
Q500 Electric Discharge Circuit for C508
(SVR) When the base goes Lo, Q500 is turned on.
●SWITCH UNIT (X16-622x-xx)
Ref. No. Application / Function Operation / Condition / Compatibility
IC2 Remote Control Sensor
Q5,21 PAN5V SW When Q5’s base goes Hi, PAN5V outputs 5V.
Q20 VFD Restart In condition of the base is Hi, key-scan starts at the same time as POWER ON.
Q22~24 Grid Driver When each transistor’s base is Lo, grid is ON.
●CD PLAYER UNIT (X32-6130-00)
Ref. No. Application / Function Operation / Condition / Compatibility
IC3 4ch BTL Driver Driver for focusing & tracking coil, driver for sled & spindle motor, and operation for
disc loading & ejection.
IC4 Servo DSP with built-in Audio DAC With built-in MP3/WMA/AAC decoder and 1M-bit-SRAM.
IC5 D1.5V REG. Power supply for digital 1.5V.
IC6 D3.3V REG. Power supply for digital 3.3V.
IC11 BU1.5V REG. Power supply for back-up 1.5V.
Q1 APC (Auto Power Control) Drives LD (Laser Diode).
Q13 Inverter Inverts ZDET signal.
D2 Laser Diode Protection Prevents reverse bias which is applied to laser. Laser destruction prevention.
D3,4 Static Electricity Countermeasure Prevents malfunction by static electricity.
COMPONENTS DESCRIPTION

5
KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/
W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY
MICROCOMPUTER’S TERMINAL DESCRIPTION
●SYSTEM μ-COM: IC600 on X34- (ELECTRIC UNIT)
Pin No. Pin Name I/O Application
Truth Value
Table Processing / Operation / Description
1 REMO I External display remote control input
Panel remote control input
2 LX REQ M O Communication request to slave unit
3-5 NC - Not used Output L fixed
6 BYTE -
7 CNVSS -
8 XCIN - Sub clock 32.768kHz
9 XCOUT - Sub clock 32.768kHz
10 RESET -
11 XOUT - Main clock 12.00MHz
12 VSS -
13 XIN - Main clock 12.00MHz
14 VCC1 -
15 NMI -
16 LX REQ S I Communication request from slave unit
17 RDS CLK I RDS decoder clock input
18 PANEL DET I Detection of panel connector detached/attached H: Panel detached, L: Panel attached
19 PON AM I/O AM power supply control AM reception: H, No AM reception: Hi-Z
20 TUN IFC OUT I Front-end IFC-OUT input H: Station found, L: No station
21 RDS AFS M I/O Noise detection time constant SW
22 RDS QUAL I/O RDS decoder QUAL input
23 RDS DATA I RDS decoder data input
24 USB SYNC O Clock output for SW-REG
25,26 NC - Not used Output L fixed
27 TUN SCL I/O Front-end I2C clock input/output MAX 400kHz
28 TUN SDA I/O Front-end I2C data input/output
29 VFD DATA I/O VFD data input/output
30 VFD INT I VFD INT input
31 VFD CLK O VFD clock output 125kHz
32 ROTARY CCW I VOL key detection Detects Pulse
15-pulse/360°, 2-click/1-pulse
33 S SYS DATA O Bolero serial output
34 S SOC DATA I Bolero serial input
35 S SOC SCL I Bolero serial clock input
36-38 NC - Not used Output L fixed
39 ROMCOR DET I E2PROM and Bolero writing request H: Writing
39 EPM I EPM input when writing
40 NC - Not used
41 VFD RST O VFD reset H: Reset cancelled, L: Reset

6
KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/
W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY
Pin No. Pin Name I/O Application
Truth Value
Table Processing / Operation / Description
42 ROTARY CW I VOL key detection Detects Pulse
15-pulse/360°, 2-pulse/1-click
43 CD MUTE I CD mute request L: Mute request (Bolero), H: Normal condition
44 VFD CE O VFD control request H: VFD data transfer ready
45 NC - Not used Output L fixed
46 PON O Power supply control H: Power ON, L: Power OFF
47,48 NC - Not used Output L fixed
49
CD LOE LIM SW I CD detection (Chucking SW) H: Loading completed, L: No disc
50,51 NC - Not used Output L fixed
52 CD LOEJ I/O CD motor control qRefer to the truth value table
53 CD MOTOR O CD motor control qRefer to the truth value table
54 CD LOS SW I CD loading detection
55
CD DISC12 SW I 12cm CD detection
56 PON PANEL I/O Panel 5V power supply
ON (For 11 minutes after ACC OFF): L
Momentary power down or Panel detached or
11 minutes after ACC OFF: Hi-Z
57 NC - Not used Output L fixed
58 SOC S RST O SOC reset H: Normal condition, L: Reset (Bolero)
59 PON ILL O Key illumination power supply H: Power ON, L: Power OFF
60 VCC2 -
61 SOC S STOP O SOC stop H: Normal condition, L: SOC stopped (Bolero)
62 VSS -
63 TYPE 1 I Destination setting
64 TYPE 2 I Destination setting
65 NC - Not used Output L fixed
66 ANT CON O Power antenna control Tuner ON: H
67 PCON O External amplifier control
68,69 NC - Not used Output L fixed
70 ILLUMI DET I Dimmer illumination detection L: ON, H: OFF
71 NC - Not used Output L fixed
72 ACC DET I ACC power supply detection ACC found: L, No ACC: H
73 BU DET I Detection of momentary power down BU found: L, Momentary power down: H
74 S SYS REQ O Communication request of system μ-com →SOC
75 S SOC REQ I Communication request of SOC →system μ-com
76 PWIC SVR O Power IC discharge circuit control H: ON, L: OFF
77 PWIC MUTE O Power IC mute control
78 PWIC STBY O Power IC standby control
79 LINE MUTE I Line mute detection TEL mute: Below 1V, NAVI mute: Over 2.5V
80 PWIC DC DET I DC offset detection
81 IC2 SDA I/O I2C data input/output
82 IC2 SCL I/O I2C clock input/output
MICROCOMPUTER’S TERMINAL DESCRIPTION

7
KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/
W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY
MICROCOMPUTER’S TERMINAL DESCRIPTION
Pin No. Pin Name I/O Application
Truth Value
Table Processing / Operation / Description
83,84 NC - Not used Output L fixed
85 MUTE 0 O E-VOL front mute L: ON, H: OFF
86 MUTE 1 O E-VOL rear mute L: ON, H: OFF
87 MUTE 2 O E-VOL SW mute L: ON, H: OFF
88 MUTE PRE FR O PRE-OUT mute for FR
Mute is L during CD play: L
Momentary power down: L
Only condition when DUAL ZONE or NAVI INT:
H fixed
89 MUTE PRE SW O PRE-OUT mute for SW L: Mute ON, H: Mute OFF
90 RDS NOISE I FM noise detection
91 TUN SMETER I S-meter input
92 LX MUTE I Communication request from slave unit H: Mute ON, L: Mute OFF
93 LX CON O Start-up request to slave unit H: Slave unit ON, L: Slave unit OFF
94 AVSS -
95 LX RST O Forced reset to slave unit H: Reset, L: Normal condition
96 VREF -
97 AVCC -
98 LX DATA S I Data from slave unit
99 LX DATA M O Data to slave unit
100 LX CLK I/O LX-BUS clock
Truth value table
qCD motor control
CD MOTOR (Pin53) CD LOEJ (Pin52)
Stop L L
Load H L
Eject H H
Brake H Hi-z

8
KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/
W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY
■Example
÷÷÷÷÷÷÷
Key Description of display Description
5
Disc EJECT times
display
EJECNT XXXXXDisc EJECT times display. MAX 65535 (times)
■5While disc EJECT times is displayed, press and hold for 2
seconds or longer to clear disc EJECT times.
A symbol “■” in the key column indicates that the key should be pressed and held for 1 second or longer.
■How to enter the test mode
Procedure Note
Press and hold the [1] key and [3] key and reset. While “– – – –” is displayed, power can be turned ON for only 30 minutes.
All lamps blink when it is detected that the sub-clock resonator is disconnected.
Do not display “CODE_OFF”, “CODE_ON” or “CODE_NG” when Power is ON.
When having started up in the test mode, change the LINE MUTE inhibition time from 10 seconds to 1 second.
When operating in the test mode, even if a DC offset error occurs, detection information is not written in the E2PROM.
When operating in the test mode, CD mechanism error log information clear mode, and DC offset error detection information clear mode, do
not perform DEMO mode operations.
Also, do not display DEMO ON/OFF option items in the MENU in STANDBY source in the above modes.
Forced load operation is prohibited in the test mode.
■How to clear the test mode
Procedure Note
Reset, momentary power down, ACC OFF, Power OFF, Panel detached. Clearing the test mode
■Test mode default condition
Description Default values
Source STANDBY
Display Display lights are all turned on.
Volume -10dB (“30” is displayed.)
Loudness OFF
CRSC OFF regardless of having/not having the switching function.
AUX ON
System Q NATURAL (FLAT)
Preout Rear
TEST MODE

9
KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/
W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY
■Special displays when all lights are on in STANDBY source
Key Description of display Description
Common All lights ON. ÷÷÷÷÷÷÷ All lights ON.
1
Destination terminal
condition indication
T Y P E 2:1 T Y P E 1:1 “TYPE” indicates system μ-com (IC1) destination, and
shows real-time condition of the destination terminal.
Development ID
condition indication
C0747WE2 –3.00Development ID – Version (system μ-com: IC1)
2 Serial No. display SNO 00000000Serial No. is displayed (8 digits)
3
Power ON time
display
PONT I M 0HX X 00~50 is displayed for “XX”. When less than 1 hour,
displayed by increments of 10 minutes.
PONT IM XXXXX
00001~10922 is displayed for “XXXXX”. MAX 10922 (hours)
■3When Power ON time is displayed, press and hold for
2 seconds or longer to clear Power ON time.
4
Disc operation
time display
CDT I M 0HX X 00~50 is displayed for “XX”. When less than 1 hour,
displayed by increments of 10 minutes.
CDT IM XXXXX
00001~10922 is displayed for “XXXXX”. MAX 10922 (hours)
■4
While the disc operation time is displayed, press and hold
for 2 seconds or longer to clear the disc operation time.
(Cleared only for displayed media.)
5
Disc EJECT times
display
EJECNT XXXXXDisc EJECT times display. MAX 65535 (times)
■5While disc EJECT times is displayed, press and hold for
2 seconds or longer to clear disc EJECT times.
6
Panel open/close
times display
PNCNT XXXXXPANEL open/close times display. MAX 65535 (times)
■6
Press the key for more than 2 seconds while the PANEL
open/close count is displayed and PANEL open/close count
is cleared.
FM ROM correction
version display
System μ-com Mecha μ-com
S:R0001M:R0001The number is the ROM correction version number.
S:ERR M:ERR When E2PROM is not installed.
S:R––––M:R––––When not written in yet.
S:R
∗∗∗∗
M:R ∗∗∗∗When data not matched. (due to the difference in versions)
Audio data
initialization AUDIO INIT AUDIO setting value is re-set to the test mode default value.
Forced Power
OFF
information
display
POF F – – – No forced power OFF
POF F SEC Forced power OFF because of missing Security Code.
POF F PNL Forced power OFF by communication error between
system μ-com and panel.
■ While the forced power OFF data is displayed, press and
hold for 2 seconds to clear the data.
CD information
display mode
ON/OFF
For the display contents, refer to “CD information display
mode” in the next section.
■ While in CD information display mode, press and hold for
2 seconds or longer to clear all CD information.
AUD
Information display
iPod authentica-
tion IC installation
status display
iPod:OK iPod authentication IC installation status display
OK: The IC is installed, NG: The IC is not installed.
(When key is pressed while the display in the left is being
shown, returns to normal display.)
iPod:NG
TEST MODE

10
KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/
W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY
• CD information display mode
Key Description of display Description
FM
(forward
rotation)
AM
(reverse
rotation)
/ CD mecha-
nism error
log display
MECHA ER R 1 :X X
Mechanism error log 1 (Latest)
XX: Error number. “– –” is displayed in case there is no
error.
MECHA ER R 2 :X X
Mechanism error log 2 (Latest)
XX: Error number. “– –” is displayed in case there is no
error.
MECHA ER R 3 :X X
Mechanism error log 3 (Latest)
XX: Error number. “– –” is displayed in case there is no
error.
/
CD Load
error
information
display
LOAD ERR1 :XX
Load error switch 1
XX: Number of errors. “– –” is displayed in case there
is no error.
LOAD ERR2 :XX
Load error switch 2
XX: Number of errors. “– –” is displayed in case there
is no error.
/
CD Ejection
error
information
display
EJECT ERR1 :XX
Ejection error switch 1
XX: Number of errors. “– –” is displayed in case there
is no error.
EJECT ERR2 :XX
Ejection error switch 2
XX: Number of errors. “– –” is displayed in case there
is no error.
EJECT ERR3 :XX
Ejection error switch 3
XX: Number of errors. “– –” is displayed in case there
is no error.
EJECT ERR4 :XX
Ejection error switch 4
XX: Number of errors. “– –” is displayed in case there
is no error.
/
CD time
code error
count data
display
(Missing
counts)
CNT LOSE CD time code error count data (Missing counts) mode
display.
CDDA :XX
Number of CD-DA count errors
XX: Number of errors. “– –” is displayed in case there
is no error.
CDROM :XX
CD-ROM (Compressed file) number of count errors
XX: Number of errors. “– –” is displayed in case there
is no error.
/
CD time
code error
count data
display
(count not
updated)
CNT STAY CD time code error count data (count not updated)
mode display.
CDDA :XX
Number of CD-DA count errors
XX: Number of errors. “– –” is displayed in case there
is no error.
CDROM :XX
CD-ROM (Compressed file) Number of count errors
XX: Number of errors. “– –” is displayed in case there
is no error.
TEST MODE

11
KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/
W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY
■Test mode specifications in TUNER source
Error is found in front-end (A1), etc. if indications below is displayed while in tuner source.
Status Display Description
Front-end (A1) E2PROM data error TNE2P NG Front-end (A1) E2PROM is still the default
(unspecified) value.
Front-end (A1) communication error
TNCON NG
Communication with front-end (A1) is not possible.
Destination mismatch TNTYP NG When destination is mismatch between front-end
(A1) E2PROM and the product.
• TUNER preset operation
Key Description of display Description
4 Preset function F M # 9 8.3 A :4 Change to 98.3MHz with the preset key [4].
• K3I forced switching
Every time when [6] key is pressed in tuner FM source, switched in the following order: AUTO →Forced WIDE →Forced MIDDLE →Forced
NARROW →AUTO. Default status is AUTO, and displayed as shown below.
Key Description of display Description
6 K3I Forced switching
FM1 9 8
.1A :AUTO
FM1 9 8.1W : Forced WIDE
FM1 9 8.1M : Forced MIDDLE
F M 1 9 8.1 N : Forced NARROW
• RDS auto measurement (KDC-W5xxx only)
Add the process to replace the visual inspection of PS display previously done in the production line.
Status Display Description
PS data reception FM1 RDS T ES T: If displayed as shown at the left, force to OFF.
P-CON is recovered by Power OFF/ON.
• FST adjustment mode
Perform FST soft-mute adjustment.
Key Note
■ Enter the FST adjustment mode. (Press for 1 second or longer.)
Operations in the FST adjustment mode are as follows:
Key Description of display Description
FM
(UP)
AM
(DOWN)
/ Soft-mute
adjustment SMD – F 0 ↔7
Seek Stop Level
adjustment (Auto) ATN V 0.00 (V) ↔5.00 (V). Normal (Local OFF)
Seek Stop Level
adjustment (Auto) ATL V 0.00 (V) ↔5.00 (V). Normal (Local ON)
/ Seek Stop Level
adjustment (Manual) MNN V 0.00 (V) ↔5.00 (V). Normal (Local OFF)
/ Seek Stop Level
adjustment (Manual) MN L V 0.00 (V) ↔5.00 (V). Normal (Local ON)
TEST MODE

12
KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/
W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY
Key Description of display Description
■ Adjustment value
memory EP WR I TE
Displays the data that has been written in the
E2PROM when pressing the key for 2 seconds or
longer.
Mode clear F M 1 9 8.3 A :4 Clear the FST adjustment mode. (Returns to
normal display and the test mode is retained.)
Switch Local Seek ON or OFF by briefly pressing [AUTO]/[TI] key when the Local Seek ON/OFF switching is allowed in the band.
After completing the FST adjustment, if you wish to clear the test mode, you can do this using the reset button.
■Test mode specifications in CD source
Display mode default: P-Time
• Procedure in CD-DA media (KTD-02A)
Key Description of display Description
Track up procedure
Every time pressed, jumps to the track shown below.
No.9 →No.15 →No.10 →No.11 →No.12 →No.13 →
No.22 →No.14 →No.9 (recursive)
But in case the disc has 8 tracks or less, playback starts
with track No.1. (For both CD-DA and compressed file
discs)
Track down procedure Goes down by 1 track from the currently played track.
1 Jump procedure
Jump to No. 28 (Scratch 0.7mm for MUSIC line vibration
testing)
2 Jump procedure Jump to No. 14 (Blurring surface disc TCD-731RA Tr14)
3
Information display
Mechanism model name
Mechanism version
6E20:
Display of Mechanism model name and Mechanism
version. (When key is pressed while the display in the
left is being shown, returns to servo version display.)
Information display
Mechanism servo
version
SERV:
Display of Mechanism model name and Mechanism
version. (When key is pressed while the display in the
left is being shown, returns to mechanism boot program
version display.)
Information display
Mechanism boot
program version
BOOT:
Display of Mechanism model name and Mechanism
version. (When key is pressed while the display in the
left is being shown, returns to normal display.)
6 Jump procedure
Jump to No. 15. Set the volume value to “25”.
(For 20Hz 0dB DC protection false-operation FCT
checking)
• Procedure in CD-DA media (MP3/WMA/AAC)
Key Description of display Description
File type display (MP3) MP 3
Display file format just before the start of file play
back.
File type display (WMA) WM A
File type display (AAC) AAC
TEST MODE

13
KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/
W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY
■Audio-related test mode
Procedure Note
Press the [AUD] key (main unit)
Press the [AUD] and [∗] keys (Remote control)
Enter audio adjustment mode (the initial item should be Fader, and then, Balance →
Bass Level →Middle Level →Treble Level →SW Level →System Q →HPF Front →
HPF Rear →LPF Sub Woofer). (Then after, any adjustment can be done.)
About audio adjustment items (include both Audio Function Mode and Audio Setup Mode)
Procedure Item Procedure Description
For item
forwarding
procedure,
press [AUD]
key and
[FM] key
Fader [VOL] knob and [ / ] key Adjust to 3 steps of R15 ↔0 ↔F15. (Default value: 0)
Balance [VOL] knob and [ / ] key Adjust to 3 steps of L15 ↔0 ↔R15. (Default value: 0)
Bass Level [VOL] knob and [ / ] key Adjust to 3 steps of -8 ↔0 ↔+8. (Default value 0)
Middle Level [VOL] knob and [ / ] key Adjust to 3 steps of -8 ↔0 ↔+8. (Default value 0)
Treble Level [VOL] knob and [ / ] key Adjust to 3 steps of -8 ↔0 ↔+8. (Default value 0)
HPF Front [VOL] knob and [ / ] key Adjust to 2 steps of Through ↔180Hz. (Default value: Through)
HPF Rear [VOL] knob and [ / ] key Adjust to 2 steps of Through ↔180Hz. (Default value: Through)
LPF Sub woofer [VOL] knob and [ / ] key Adjust to 2 steps of 60Hz ↔Through. (Default value: Through)
LPF Subwoofer Phase [VOL] knob and [ / ] key Adjust to 2 steps of Normal ↔Reverse. (Default value: Normal)
Volume Offset [VOL] knob and [ / ] key Adjust to 2 steps of -8 ↔0 . (Default value 0)
Loudness [VOL] knob and [ / ] key Adjust to 2 steps of OFF ↔ON . (Default value OFF)
Dual Zone [VOL] knob and [ / ] key Adjust to 2 steps of OFF ↔ON . (Default value OFF)
■MENU-related test mode
Procedure Note
Press the [M.JOG] key (main unit)
Press the [DNPP/SBF] and [DIRECT] keys (Remote control) Continuous forwarding by remote control is prohibited
■Backup current measurement
Procedure Note
While ACC OFF (Back Up ON), Reset MUTE terminal is OFF after 2 seconds, not after 15 seconds.
(During this time, the CD mechanism does not function.)
■PREOUT switching
Procedure Note
In the STANDBY source, press and hold [AUTO] key for
1 second or longer Switches PREOUT
■Dual Zone switching
Procedure Note
In the except STANDBY source, press the [AUTO] key. Switches ZONE2 ON/OFF. (Default OFF)
TEST MODE

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KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/
W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY
■
Clearing CD mechanism information / Service information / DC offset error information (Clearing E2PROM data)
Status Display Description
While pressing and holding [2] key and
[5] key, reset-start.
CD O At normal termination
CD X At abnormal termination
While “– – – –” is displayed, power can be ON for 30 minutes. This mode is cancelled by resetting. (The last screen will not be retained.)
Data to be cleared is shown below.
CD mechanism information
CD mechanism error log display
Displays CD loading error data
Displays CD EJECT error data
Displays CD time code count error data (missing count)
Displays CD time code count error data (count not updated)
Service Information
Power ON time display
CD operation time display
CD EJECT times display
PANEL open/close times display
Forced Power OFF information display
DC offset error information
DC offset error 1 display (Provides information on whether there is an improper connection or another error)
DC offset error 2 display (Provides information on the number of capacitor leaks)
■Clearing DC offset error detection data (E2PROM data clearing)
Procedure Note
While pressing and holding [3] key and [6] key, reset-start. Entering DC offset error display mode.
Procedure Display Description
Press and hold
the [3] and
[6] keys, and
reset-start
DC ERR When DC offset error is detected (when either one of capacitors is
leaking, or an improper connection or another error is detected)
DC OK When DC offset error is not detected (when none of capacitors leak,
no improper connection or other error is detected)
1
DC1 ERR When improper connection or other DC offset errors are detected.
DC1 OK When improper connection or other DC offset errors are not detected.
■1DC1 OK When detecting improper connection or other DC offset errors, clears
detection data. (Clear E2PROM)
2DC2 4 When detecting capacitor leak, provides information on the number of
capacitor leaks. (0~4)
■2DC2 0 When detecting capacitor leak, clears the number of capacitor leaks.
(Clear E2PROM)
This mode is cancelled by resetting. (The last screen will not be retained.)
■FM/AM channel space switching (KDC-MPxxxx and KDC-X492 only)
Procedure Note
While Power OFF, press and hold [1] key and [5] key,
and press [SRC] key to Power ON
FM200kHz/AM10kHz ↔FM50kHz/AM9kHz
FM50kHz/AM10kHz ↔FM200kHz/AM10kHz (KDC-MP408U)
TEST MODE

15
KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/
W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY
■Security
• Forced Power ON mode
Procedure Note
While pressing and holding [M.JOG] key and [4] key, reset-start. While “– – – –” is displayed, power can be turned ON for only 30
minutes. After 30 minutes, can only be recovered by resetting.
• How to register the security code on the “Car Audio Passport” after replacement of the FRONT-END (A1)
with E2PROM (Models for destination “M” and “E”)
Procedure Description
While pressing and holding [1] key and [3] key, reset-start Enters the test mode
Press the [M.JOG] key Enters the MENU mode.
Press and hold [ ] key for 1 second or longer Enters the security registration mode.
[FM] / [AM] / [ / ] key Inputs the code. FM: Number up / AM: Number down /
:Cursor to the left / : Cursor to the right
Press and hold [ ] key for 3 seconds or longer “RE-ENTER” is displayed.
[FM] / [AM] / [ / ] key Inputs the code again. FM: Number up / AM: Number down /
:Cursor to the left / :Cursor to the right
Press and hold [ ] key for 3 seconds or longer “APPROVED” is displayed.
Reset, momentary power down, ACC OFF, Power OFF, panel removed Cancels the test mode.
Note: The security code in this model cannot be all-clear.
• Method of clearing the programmable security code (Models for destination “K”)
Procedure Display Description
Press [ ] key for 3 seconds or longer-
while pressing [AUTO] key CODE –––– Carry out the procedure while “– – – –” is being displayed.
CODE “– – – –” disappears.
Press the remote control [5] key 2 times,
display “K”, and press [ ] key. CODE K
Press the remote control [2] key 3 times,
display “C”, and press [ ] key. CODE KC
Press the remote control [2] key 1 time,
display “A”, and press [ ] key. COD E KCA
Press the remote control [7] key 2 times,
display “R”, and press [ ] key. CODE KCAR
APPROVED Security cancelled. (If wrong character is
input, code request mode is displayed.)
TEST MODE

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KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/
W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY
■ROM data transfer
When replacing front-end (A1), this function is used to transfer E2PROM data (ROM correction, security and other data) to front-end (A1) to
E2PROM of to mother unit (X34-), used for saving data, and, after completing replacement of front-end (A1), to recover data from the E2PROM
of the mother unit (X34-), and for saving data to the new front-end (A1). Refer to “ROM data transfer processes” on the next page for details on
front-end (A1) replacement procedures and on the data to be transferred.
Procedure Display Description
While pressing and holding [1]
key and [3] keys, reset-start All lights ON.
Press [M.JOG] key (MENU) ROM READ MENU mode
Press [ ] key or [ ] key
ROM READ Front-end (A1) →Mother unit (X34-). Data transfer
processing.
ROM WR I T E Mother unit (X34-) →Front-end (A1). Data transfer
processing.
(In the above ROM READ
status), ■[ ] key for
2 seconds or longer
ROM READ Front-end (A1) →Mother unit (X34-). ROM data is being
transferred.
ROM READ OK Front-end (A1) →Mother unit (X34-).
ROM correction transfer, security and other data is OK.
ROM RE AD OK2 Front-end (A1) →Mother unit (X34-).
Transfer of security and other data is OK.
ROM READ NG Front-end (A1) →Mother unit (X34-). ROM data transfer
is NG.
(In the above ROM WRT
status), ■[ ] key for
2 seconds or longer
ROM WR I T E Mother unit (X34-) →Front -end (A1). ROM data is being
transferred.
ROM WR I T E OK Mother unit (X34-) →Front-end (A1).
ROM correction, security and other data transfer is OK.
ROM WR I T E OK 1 Mother unit (X34-) →Front-end (A1).
ROM correction data transfer is OK.
ROM WR I T E OK 2 Mother unit (X34-) →Front-end (A1).
Transfer of security and other data is OK.
ROM WR I T E NG Mother unit (X34-) →Front-end (A1). ROM data transfer
is NG
(In every status of ROM data
[M.JOG] transfer processing) Clear from ROM correction data transfer processing
TEST MODE

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KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/
W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY
ROM DATA TRANSFER PROCESSES
When replacing front-end (A1) of mother unit (X34-), or when
adding or replacing ROM correction (program correction
with ROM IC (IC10)), the following activities are required.
■Overview
When replacing front-end (A1) in the model where ROM cor-
rection and security data have been written into E2PROM,
included in the front-end (A1) pack, the transfer function of
the E2PROM data itself in the replaced front-end (A1) is re-
quired.
This function in the above system configuration is used to
allow for complete replacement of the front-end at any ser-
vice center.
■Overview of specifications
Procedures for replacement are as follows: To install the
E2PROM to the mother unit (X34-), and replace front-end (A1)
with new front-end after copying the data in the E2PROM
(such as ROM correction data and other data) in the front-
end (A1) to the mother unit (X34-) by operating the system,
and then copy the data (such as ROM correction data and
other data) into the mother unit to the E2PROM of the front-
end (A1), operating the main body.
Tuner adjustment data was inserted during the tuner pack
manufacturing, and data will not be transferred because
front-end (A1) is built-in.
In addition, tuner adjustment data for new front-end (A1) is
supplied as a service part in which data was inserted.
■Data to be copied
• ROM correction data
• Other data
Security data
DEMO MODE ON/OFF status
POWER ON time (For maintenance)
Playback time (For maintenance)
EJECT count (For maintenance)
Panel open/close count (For maintenance)
CD I2C status (For maintenance)
CD offset error code (For maintenance)
CD sound skips count (For maintenance)
CD time code not updated count (For maintenance)
CD load switch errors count (For maintenance)
CD ejection errors count (For maintenance)
DC offset error (For maintenance)
Forced Power OFF information (For maintenance)
Serial number (For maintenance)
E2PROM data check data (For internal check)
■Operation procedure
Operation procedure is different depending on the condi-
tions. Proceed with the appropriate operation procedure
depending on the specific condition.
1. In case of replacing front-end (A1) without an applicable
ROM correction.
2. In case of replacing front-end (A1) with an applicable
ROM correction.
3. In case of applying new ROM correction at the same
time when front-end (A1) is replaced. (No ROM correc-
tion has been carried out.)
FRONT-
END (A1)
E2PROM E2PROM
SYSTEM
μ-COM (IC1)
Mother unit (X34-)
E2PROM circuit pattern
:
Install new E2PROM.
Install E2PROM containing no data, in case of [1] and [2].
In case of [3], install maintenance E2PROM with an appli-
cable ROM correction program.
FRONT-
END (A1)
E2PROM E2PROM
SYSTEM
μ-COM (IC1)
Mother unit (X34-)
@

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KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/
W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY
Turn power on.
Press and hold the [1] and [3] keys and press reset button.
(Enter the system in the test mode.)
Press [B.BOOST] key. (ROM data System enters data trans-
fer mode.)
Press [ ] (or [ ] .) (Select READ)
Press [ ] key for 1 second or longer. (Data transfer)
FRONT-
END (A1)
E2PROM E2PROM
SYSTEM
μ-COM (IC1)
Mother unit (X34-)
.
The system μ-COM (IC1) copies
the data in the front-end (A1) in the
E2PROM on the mother unit (X34-)
READ OK
In case of [2]
In case of [1] or [3]
R-OK
READ OK2 R-O2
Press [ ] key. (Exit ROM data transfer mode.)
Turn power off.
Remove front-end (A1).
FRONT-
END (A1)
E2PROM
SYSTEM
μ-COM (IC1)
Mother unit (X34-)
;
Install new front-end (A1).
No ROM correction or other data status.
FRONT-
END (A1)
E2PROM E2PROM
SYSTEM
μ-COM (IC1)
Mother unit (X34-)
=
Turn power on.
Press and hold the [1] and [3] keys and press reset button.
(Enter the system in the test mode.)
Press [B.BOOST] key. (Start transferring ROM data.)
Press [ ] (or [ ] .) (Select WRT)
Press [ ] key for 1 second or longer. (Data transfer)
FRONT-
END (A1)
E2PROM E2PROM
SYSTEM
μ-COM (IC1)
Mother unit (X34-)
B
System μ-COM (IC1) copies
data on the mother unit (X34-) into
E2PROM in the front-end (A1)
WRT OK
In case of [2] or [3]
In case of [1]
W-OK
WRT OK2 W-O2
Press [ ] key. (Exit ROM data transfer mode.)
ROM DATA TRANSFER PROCESSES

19
KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/
W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY
4. In case of applying a new ROM correction when front-
end (A1) is replaced (There is ROM correction data.)
5. In case of applying a new ROM correction even when
front-end (A1) is not replaced.
FRONT-
END (A1)
E2PROM
SYSTEM
μ-COM (IC1)
Mother unit (X34-)
E2PROM circuit pattern
:
ROM correction
Tuner adjustment
Other
Install new E2PROM. (E2PROM that has been updated with
ROM correction)
FRONT-
END (A1)
E2PROM E2PROM
SYSTEM
μ-COM (IC1)
Mother unit (X34-)
@
Turn power on.
Press and hold the [1] and [3] keys, press reset button. (Enter
the system in the test mode.)
Press [B.BOOST] key. (ROM data System enters data trans-
fer mode.)
Press [ ] (or [ ] .) (Select WRT)
Press [ ] key for 1 second or longer. (Data transfer)
FRONT-
END (A1)
E2PROM E2PROM
SYSTEM
μ-COM (IC1)
Mother unit (X34-)
.
System μ-COM (IC1) copies
the ROM correction data on the
mother unit (X34-) into E2PROM
in the front-end (A1)
WRT OK1 W-O1
In case of [4] In case of [5]
Press [ ] key. (Exit ROM
data transfer mode.)
Press [ ] (or [ ] .) (Select READ)
Press [ ] key for 1 second or longer. (Data transfer)
FRONT-
END (A1)
E2PROM E2PROM
SYSTEM
μ-COM (IC1)
Mother unit (X34-)
System μ-COM (IC1) copies
data in the front-end (A1) into the
E2PROM on the mother unit (X34-).
(ROM correction and other data)
READ OK R-OK
ROM DATA TRANSFER PROCESSES

20
KDC-MP408U/MP438U/X492/MP5039U/MP5539U/W5041UA/
W5041UG/W5141UAY/W5141UGY/W5541U/W5641UY
Press [ ] key. (Exit ROM data transfer mode.)
Turn power off.
Remove front-end (A1).
FRONT-
END (A1)
E2PROM
SYSTEM
μ-COM (IC1)
Mother unit (X34-)
;
Install new front-end (A1).
No ROM correction or other data status.
FRONT-
END (A1)
E2PROM E2PROM
SYSTEM
μ-COM (IC1)
Mother unit (X34-)
=
Turn power on.
Press and hold the [1] and [3] keys press reset button. (Enter
the system in the test mode.)
Press [B.BOOST] key. (Enter the system in ROM data trans-
fer mode.)
Press [ ] (or [ ] .) (Select WRT)
Press [ ] key for 1 second or longer. (Data transfer)
FRONT-
END (A1)
E2PROM E2PROM
SYSTEM
μ-COM (IC1)
Mother unit (X34-)
B
System μ-COM (IC1) copies
data on the mother unit (X34-) into
E2PROM in the front-end (A1)
WRT OK W-OK
Press [ ] key. (Exit ROM data transfer mode.)
ROM DATA TRANSFER PROCESSES