Kenwood KDC-MP538U User manual

SERVICE MANUAL
This product uses Lead Free solder.
This product complies with the RoHS directive for the European market.
© 2008-4 PRINTED IN JAPAN
B53-0631-00 (N)429
KDC-MP538U/MP6039/MP6539U
KDC-W6041U/W6141UY
KDC-W6541U/W6641UY
KDC-X592
CD RECEIVER
TDF SPARE-PANEL
MAIN UNIT NAME TDF PARTS No. TDF NAME
KDC-MP538U Y33-2950-61 TDF-MP86D
KDC-MP6039 Y33-2950-65 TDF-MP6039
KDC-MP6539U Y33-2950-64 TDF-MP6539U
KDC-W6041U Y33-2950-63 TDF-W6041U
KDC-W6141UY Y33-2950-63 TDF-W6041U
KDC-W6541U Y33-2950-62 TDF-W6541U
KDC-W6641UY Y33-2950-62 TDF-W6541U
KDC-X592 Y33-2950-60 TDF-86DX
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-MP538U : Panel assy (A64-4436-11)
KDC-MP6539U : Panel assy (A64-4441-11)
KDC-W6141UY : Panel assy (A64-4440-11)
KDC-W6641UY : Panel assy (A64-4438-11)
KDC-MP6039 : Panel assy (A64-4442-11)
KDC-W6041U : Panel assy (A64-4439-11)
KDC-W6541U : Panel assy (A64-4437-11)
KDC-X592 : Panel assy (A64-4435-11)
KDC-X592
KDC-MP538U
KDC-W6541U
KDC-W6641U
KDC-W6041U
KDC-W6141U
KDC-MP6539U
KDC-MP6039
* Screw set
(N99-1790-05)
* Compact disc
(W01-1723-05)
* Cover
(F19-1475-04)

2
KDC-MP538U/MP6039/MP6539U/
W6041U/W6141UY/W6541U/W6641UY/X592
BLOCK DIAGRAM
AM+B
FRONT-END
CD MECHA
PON5V
A8V
A8V
AGC
E-VOL
PRE
MUTE
IC
POWER
PRE OUT
AUX IN
IC451
RDS
DECODER
BU5V
A8V
SERVO+B
UP
BACK
RESET
IC BU5V
u-COM
P-CON
ANT-CON
ACC DET
ILLUMI
BU5V
ILL+B
SW14V
A8V
SW5V
P-CON
ANT CON
ILLUMI
ACC
BACK UP
LINE MUTE
SP OUT
(FL/FR/RL/RR)
FL
RESET SW
LED
BU5V
PON5V
SERVO
A8V
ILL+B
ILL+B
(F/R SW)
WIRED REMOTE
LINE MUTE
LX BUS CONNECTOR
4P
USB5V
to USB u-COM
USB I/F
SW16V
SW16V
SW16V
USB u-COM
PAN5V
BU3.3V
IC1
IC700
IC601
IC501
A322 Q321,322
Q331 J431 CN201
Q407,408
Q401-406
IC301
DME1
Q121
Q141-144
Q145,146
Q151
C151,R152
Q123
Q21,22
Q23,24
IC11
Q141-144
SERVO
+B+B
Q31-34
Q41-44
Q51,52
FDC
Q71,72
FL+B
SW DC/DC
(FL)
(D5V)
DC/DC
SW
PAN5V
HI-SIDE
SW
FL+B
USB5V
VBUS OC
(BT3.3V)
DC/DC
PAN5V BT3.3
Q681,682
Q81,82 IC71
IC211 IC61
IC965
DET
BU/SERGE
SW
EJE/SRC
MATRIX
KEY
ROM
CORRECTIO
ROTARY
ENCODER
REMOTE
CONTROL
DRIVER
LED
FL+B
ED1
S2-6
IC4
S1
S7 IC3
IC602
u-COM
PANEL
LEVEL
SHIFT
AUTHENTICATION
iPod
u-COM
USB Q602,603
Q702,703
IC750
J1
J401
J421
IC700
WH151
SYSTEM
VBUS OC
E2PROM
FST
FM/AM
CD
SPECTRUM
MUTE A
MUTE 0,1,2
WININ OFFSET
MUTE A
PWIC MUTE
for
MPX
RDS
ANALYZER
DC ERR
MUTE 0,1,2
AUX
CH
MUTE C
MUTE C
STBY
PREM/SW M
I2S
I2S
DAC
SWITCH UNIT (X16- )
ELECTRIC UNIT (X34- )
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

3
KDC-MP538U/MP6039/MP6539U/
W6041U/W6141UY/W6541U/W6641UY/X592
COMPONENTS DESCRIPTION
●ELECTRIC UNIT (X34-588x-xx)
Ref. No. Application / Function Operation / Condition / Compatibility
IC11 Audio8V REF Power Supply Outputs 1.27V.
IC21 REG Power supply for IC700. (USB μ-COM)
IC61 SW REG Power supply for D5V. (To USB and PANEL)
IC71 SW REG Power supply for FL+B. (To PANEL)
IC101 OP-AMP For IC451’s 4V reference voltage supply.
IC211 Hi-side SW Detects USB’s over-current.
IC301 RDS decoder IC Decodes RDS.
IC331 OP-AMP For AGC of spectrum analyzer.
IC451 E-VOL & Source Selector Controls the source, volume, and tone.
IC501 Power IC Amplifies the front L/R and the rear L/R to 50W maximum.
IC601 System μ-COM Controls FM/AM tuner, the changer, CD mechanism, panel, volume and tone.
IC602 Reset IC Lo when detection voltage goes below 3.6V.
IC603 ROM Correction
IC604 Muting Logic IC Controls muting logic.
IC605 Level Shift (3.3V→5V)
IC607 Level Shift (5V→3.3V)
IC700 USB μ-COM USB and CD mechanism control.
IC750 iPod Authentication Coprocessor iPod authentication.
Q11 AUD8V AVR When Q13’s and Q12’s bases goes ON, A8V AVR outputs 8.0V.
Q12 AUD8V AVR SW When Q13's base goes Hi, current is supplied to IC11.
Q13 AUD8V AVR SW When Q13’s base goes Hi, Q12 and Q11 are ON.
Q21,22 BU5V AVR While BU is applied, BU5V AVR outputs +5V.
Q23,24 PON5V When Q24’s base goes Hi, PON5V outputs +5V.
Q31,32 SERVO+B AVR When Q33’s and Q34’s bases go ON, AVR outputs 8V.
Q33,34 SERVO+B SW When Q34's base goes Hi, Q33 is ON.
Q41,42 ILL+B AVR When Q43’s and Q44’s bases go ON, AVR outputs 10V.
Q43,44 ILL+B SW When Q44’s base goes Hi, Q43 is ON.
Q51,52 SW16V When Q9’s and Q34’s bases go ON, voltage is applied. (MAX16V)
Q71,72 FDC+B AVR When Q43’s base goes ON, AVR outputs 9V. (FL filament)
Q81,82 FL+B SW When Q81’s base goes Hi, FL+B outputs 53V.
Q101,102 4VPRE+B When Q104’s and Q105’s bases go ON, 4VPRE+B is output. (MAX12V)
Q103 4VPRE+B Protect When 4VPRE+B has over-current, Q103 turns Q101 off.
Q104,105 4VPRE+B SW When Q105’s base goes Hi, Q104 is ON.
Q121 BU DET SW When the base goes Hi, BU voltage is detected.
Q122 Surge DET SW When the base goes Hi, surge voltage is detected.
Q123 ACC DET SW When the base goes Hi, ACC voltage is detected.
Q141,144 P-CON SW When Q144’s base goes Hi, AVR outputs 14V.
Q142,143 P-CON Protect Protects Q141 when P-CON output is grounded.
Q145,146 Power Antenna SW When Q146’s base goes Hi, power antenna SW outputs 14V.
Q151 Small-lamp DET SW When the base goes Hi, small-lamp is detected.

4
KDC-MP538U/MP6039/MP6539U/
W6041U/W6141UY/W6541U/W6641UY/X592
Ref. No. Application / Function Operation / Condition / Compatibility
Q321,322 AM+B SW When Q322’s base goes Hi, AM+B is output.
Q331 AGC For spectrum analyzer.
Q401~406 Pre-out Mute SW When a base goes Hi, pre-out is set to mute.
Q407,408 Pre-out Mute Driver When a base goes Lo, mute driver is turned on.
Q601 CD SRAM STB SW When the base goes Lo, SRAM is standby.
Q602,603 Level Shift From system μ-COM (5V) to USB μ-COM (3.3V).
Q681,682 PANEL+5V SW When Q682’s base goes Hi, PANEL+5V is output.
Q683,684 Level Shift From CD mechanism (3.3V) to system μ-COM (5V).
Q702,703 3.3V AVR for IC700 (Flash ROM type) When Q702’s base is Hi, 3.3V is ON.
Q704 SRAM Standby Control Buffer When the base is Lo, SRAM is standby.
Q705 CD LOE LIM SW Buffer When the base is Hi, loading ends.
●SWITCH UNIT (X16-63xx-xx)
Ref. No. Application / Function Operation / Condition / Compatibility
IC1 Panel μ-COM Controls panel.
IC3 Remote Control IC Receives remote control signal.
Q1 Triangle Red LED SW Triangle LED lights when the base goes Hi.
Q3 Blue LED SW (left of VOL) Blue LED brightness control (PWM).
Q4 Blue LED SW (Top on FL & ATT Key) Blue LED lights when the base goes Hi.
Q5 Blue LED SW (Under FL) Blue LED brightness control (PWM).
Q6 Blue LED SW (Multi Key) Blue LED brightness control (PWM).
Q11 VFD Filament Voltage (-) VFD cut-off bias supply (5.0V - 7.5V).
Q21 Blue LED SW Blue LED brightness control (PWM).
Q22 Red LED SW Red LED brightness control (PWM).
Q23 Green LED SW Green LED brightness control (PWM).
●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-MP538U/MP6039/MP6539U/
W6041U/W6141UY/W6541U/W6641UY/X592
MICROCOMPUTER’S TERMINAL DESCRIPTION
●SYSTEM μ-COM : IC601 on X34- (ELECTRIC UNIT)
Pin No. Pin Name I/O Application
Truth Value
Table Processing / Operation / Description
1 WIRED REMO I Remote control signal input Pulse width detection
2 RDS QUAL I RDS decoder QUAL input
3 S SYS DATA O Data from system μ-COM to SOC 400kHz
3 CD SI O CD mechanism serial output (MP6039)
4 S SOC DATA I Data from SOC to system μ-COM 400kHz
4 CD SO I CD mechanism serial input (MP6039)
5 S SOC CLK I Clock from SOC (SOC is the host) 400kHz
5 CD CLK O Serial clock output (MP6039) f=1MHz
6 BYTE -
7 CNVSS -
8 XCIN - 32768Hz
9 XCOUT - 32768Hz
10 RESET -
11 XOUT - 12MHz
12 VSS -
13 XIN - 12MHz
14 VCC1 -
15 NMI I Not used
16 RDS CLK I RDS clock input
17 PANEL DET I Panel connector ON/OFF detection H: Panel OFF, L: Panel ON
18 SRC KEY I Source key input H: OFF, L: ON
19 RDS DATA I RDS decoder data input
20
CD DRIVEMUTE O CD motor driver mute output
21 EJECT KEY I Eject key input H: OFF, L: ON
22 PANRST O Panel reset H: Normal, L: Reset
23 CD PIO0 I Communication request from CD mechanism DSP
(Command interface) H: Data requested
24 PON CD I/O CD mechanism power supply control H: Power supply ON, Hi-Z: Power supply OFF
25 F SEL1 I/O SW-REG frequency setting (Bluetooth)
26 PWIC BEEP O Beep output 2kHz / 1kHz
27 TUN SCL I/O Front-end I2C clock input/output MAX: 400kHz
28 TUN SDA I/O Front-end I2C data input/output MAX: 400kHz
29 PAN SYS DATA O Data from system μ-COM to panel UART MAX: 500kHz
30 PAN PAN DATA I Data from panel to system μ-COM UART MAX: 500kHz
31 PAN SYS REQ O
Communication request from system μ-COM to panel
32 PAN PAN REQ I Communication request from panel to system μ-COM
33~35 NC - Not used Output L fixed
36 PON ILL I/O Panel LED power supply control
FL display bias power supply control
H: POWER ON,
Hi-Z: Panel OFF or POWER OFF
37 NC - Not used Output L fixed
38 PON PANEL I/O Power supply for panel μ-COM
FL display VDD supply
H: POWER ON,
Hi-Z: Panel OFF or POWER OFF

6
KDC-MP538U/MP6039/MP6539U/
W6041U/W6141UY/W6541U/W6641UY/X592
Pin No. Pin Name I/O Application
Truth Value
Table Processing / Operation / Description
39 ROMCOR DET I ROM correction writing request H: Possible to rewrite in ROM correction
(I2C opened)
39 EPM I EPM input while writing
Possible to rewrite in Lo at the start-up
40 CD MOTOR O CD motor control qRefer to the truth value table
41 CD LOE LIM SW I CD detection (Chucking detection) H: Loading completed, L: No disc
42 CD LOS SW I CD loading detection L: Eject completed
43
CD DISC12 SW I 12cm disc detection L: 12cm disc
44 PAN SC CON O Panel operation control
CE when system μ-COM program is rewritten H: Normal, L: Panel operation stopped
45 CD LOEJ I/O CD motor control qRefer to the truth value table
46 S SOC REQ I
Communication request from SOC to system μ-COM
47 SOC SSTOP O SOC stop H: Normal, L: SOC stopped
47 CD SRAMSTB O Decoder SRAM standby control (MP6039) L: SRAM standby
48 SOC SRST O SOC reset H: Normal, L: Reset (Bolero)
48 CD RST O CD mechanism μ-COM reset (MP6039) H: Normal, L: Reset
49 S SYS REQ O
Communication request from system μ-COM to SOC
49 CD CCE O CD mechanism chip enable (MP6039)
50 SOC MUTE I DAC mute request H: Mute requested, L: Normal
50 CD MUTE I DAC mute request (MP6039) H: Mute requested, L: Normal
51 PON D5V I/O For USB / FDC 5V power supply control H: ON, Hi-Z: OFF
52 PON I/O Power supply control H: ON, Hi-Z: OFF
53
OEM DISP DATA I/O External display data
54 OEM DISP CLK I/O External display clock
55 OEM DISP CE I/O External display control request
56 P CON I/O P-CON control POWER ON: H, POWER OFF: Hi-Z,
STANDBY source: Hi-Z
57 ANT CON O Antenna control TUNER source: H, POWER OFF: L,
STANDBY source: L
58 NC - Not used Output L fixed
59 ILLUMI DET I Dimmer illumination detection L: ON, H: OFF
60 VCC2 -
61 MUTE 0 O E-VOL FRONT MUTE control L: Mute ON, H: Normal,
Time constant isolation setting: 10ms
62 VSS -
63 MUTE 1 O E-VOL REAR MUTE control L: Mute ON, H: Normal,
Time constant isolation setting: 10ms
64 MUTE 2 O IC-2 SW MUTE control
L: Mute ON, H: Normal,
Time constant isolation setting: 10ms
(Countermeasure for IC-2 shock noise)
65 LINE MUTE I Line mute detection TEL mute: Below 1V, NAVI mute: Over 2.5V
66~68 NC - Not used Output L fixed
69 MUTE SA I/O IC-2 MUTE A control
Spectrum analyzer mute
L: Mute ON, Hi-Z: Normal,
Time constant isolation setting: 0.5ms
70 PWIC DC DET I DC offset detection
MICROCOMPUTER’S TERMINAL DESCRIPTION

7
KDC-MP538U/MP6039/MP6539U/
W6041U/W6141UY/W6541U/W6641UY/X592
Pin No. Pin Name I/O Application
Truth Value
Table Processing / Operation / Description
71 ACC DET I ACC detection ACC detected: L, No ACC: H
72 BU DET I BU detection BU detected: L, No BU or Momentary power
down or Over-voltage: H
73 LX REQ S I Communication request from slave unit
74 MUTE AFS I/O IC-2 MUTE C control / AFS mute L: Mute ON, Hi-Z: Normal,
Time constant isolation setting: 0.5ms
75 SDAEVOL I/O Data output from system μ-COM to E-VOL Communication speed: 200k-400kHz
75 SDAE2P I/O I2C data for ROM correction Communication speed: 200k-400kHz
76 SCLEVOL I/O Clock output from system μ-COM to E-VOL Communication speed: 200k-400kHz
76 SCLE2P I/O I2C clock for ROM correction Communication speed: 200k-400kHz
77 PWIC MUTE O Power IC mute STANDBY source or Momentary power down:
L, TEL mute: L
78 PWIC STBY O Power IC standby POWER ON: H, POWER OFF: L
79 LX REQ M O Communication request to slave unit
80 LX MUTE I Mute request from slave unit H: Mute ON, L: Mute OFF
81 LX CON O Start-up request to slave unit H: Slave unit ON, L: Slave unit OFF
82 LX RST O Forced reset to slave unit H: Reset, L: Normal
83 MUTE PRE FR O External preout mute F/R 0-bit, Momentary power down: L
84 MUTE PRE SW O External preout mute SUB
(Countermeasure for mute shock noise) 0-bit, Momentary power down: L
85 PON AM I/O AM+B power supply control H: AM received, Hi-z: Other conditions
86 TUN IFC OUT I Front-end IFC-OUT input H: Station detected, L: No station
87 TUN SMETER I S-meter voltage detection
88 RDS NOISE I FM noise voltage detection
89 RDS AFS M I/O Noise detection time constant SW L: AF search, Hi-Z: Normal
90 TYPE 1 I A/D (5-pattern)
91 TYPE 2 I A/D (5-pattern)
92,93 NC - Not used Output L fixed
94 AVSS -
95 NC - Not used Output L fixed
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 (Pin 40) CD LOEJ (Pin 45)
Standby L L
Eject H H
Load H L
Brake H Hi-z
MICROCOMPUTER’S TERMINAL DESCRIPTION

8
KDC-MP538U/MP6039/MP6539U/
W6041U/W6141UY/W6541U/W6641UY/X592
●PANEL μ-COM : IC1 on X16- (SWITCH UNIT)
Pin No. Pin Name I/O Application
Truth Value
Table Processing / Operation / Description
1 REMO I Remote control signal input Pulse width detection
2 NC - Not used Output L fixed
3 FL SI1 O FL display serial data output Pulse output
4 NC - Not used Output L fixed
5 FL CLK O FL display serial clock output H: Except when data is written
(Including STANDBY)
6 BYTE - GND
7 CNVSS -
8,9 NC - Not used Output L fixed
10 RESET - Reset Being controlled by system μ-COM
H: Normal, L: Reset
11 XOUT - Resonator 12MHz
12 VSS - GND
13 XIN - Resonator 12MHz
14 VCC1 - Power supply (5V) Connects PAN5V
15 NMI I Not used Input fixed
16~19 NC - Not used Output L fixed
20
LED CONT RTY2 O LED rotary (Multi-key side) PWM output H: LED ON, L: LED OFF
20 LED CONT BLUE O Vari blue PWM output H: LED ON, L: LED OFF
21 NC - Not used Output L fixed
22 FL BK O FL display blanking control H: FL display OFF, L: FL display ON
23 FL LAT O FL display latch control H: Data through, L: Data latch
24 LED CONT UNDER O LED side luminescence (Under FL display) PWM output H: LED ON, L: LED OFF
24
LED CONT RED O Vari RED PWM output H: LED ON, L: LED OFF
25 NC - Not used Output L fixed
26 LED CONT RTY1 O LED rotary (VOL side) PWM output H: LED ON, L: LED OFF
26 LED CONT GREEN O Vari GREEN PWM output H: LED ON, L: LED OFF
27,28 NC - Not used Output L fixed
29 PAN DATA O Data transmission from panel
30 SYS DATA I Data reception from system μ-COM
31 SYS REQ I System μ-COM communication request input H: Data communicated
32 PAN REQ O Panel communication request output H: Data communicatied
33 FL SI2 O FL display serial data output Pulse output
34 NC - Not used Output L fixed
35 CLK IN I/O FL display serial clock input Inputs FL display clock
36~38 NC - Not used Output L fixed
39 ROMCOR DET I ROM correction writing mode H: Authorization to rewrite in ROM correction
(I2C opened)
39 EPM I For rewriting in flash ROM (EPM) Input fixed
40~43 NC - Not used Output L fixed
44 FLASH CE I For rewriting in flash ROM (CE)
45,46 NC - Not used Output L fixed
47
LED CONT FLTOP I/O LED side luminescence (Above FL display) SW H: LED ON, Hi-Z: LED OFF
MICROCOMPUTER’S TERMINAL DESCRIPTION

9
KDC-MP538U/MP6039/MP6539U/
W6041U/W6141UY/W6541U/W6641UY/X592
Pin No. Pin Name I/O Application
Truth Value
Table Processing / Operation / Description
48 LED CONT TRI I/O Triangle LED luminescence SW H: LED ON, Hi-Z: LED OFF
49,50 NC - Not used Output L fixed
51 SDA I/O Data transmission and reception for ROM correction Output except when data is read
52 SCL I/O Clock for ROM correction Output except when clock data is read
53~55 NC - Not used Output L fixed
56 ROTALY2 CW I Rotary (Multi key) B input Pulse width detection
1-pulse/2-click, 15-pulse/360°
57 ROTALY2 CCW I Rotary (Multi key) A input Pulse width detection
1-pulse/2-click, 15-pulse/360°
58 ROTALY1 CW I Rotary (VOL) B input Pulse width detection
1-pulse/2-click, 15-pulse/360°
59 ROTALY1 CCW I Rotary (VOL) A input Pulse width detection
1-pulse/2-click, 15-pulse/360°
60 VCC2 - Power supply (5V) Connects PAN5V
61 NC - Not used Output L fixed
62 VSS - GND
63~70 NC - Not used Output L fixed
71 SC CON I System μ-COM communication
Panel operation control
H: Panel operated,
L: Panel operation stopped
72 NC - Not used Output L fixed
73 KR2 I Key return input q
74 KR1 I Key return input q
75 NC - Not used Output L fixed
76 KS1 I/O Key scan output qSwitches between output-L and Hi-Z
77 KS2 I/O Key scan output qSwitches between output-L and Hi-Z
78 KS3 I/O Key scan output qSwitches between output-L and Hi-Z
79 KS4 I/O Key scan output qSwitches between output-L and Hi-Z
80 KS5 I/O Key scan output qSwitches between output-L and Hi-Z
81~90 NC - Not used Output L fixed
91 SA RST O Reset output for spectrum analyzer H: Reset released, L: Reset
92 SA CLK O Clock output for spectrum analyzer
93 SA IN I Data input for spectrum analyzer
94 AVSS - GND
95 NC - Not used Output L fixed
96 VREF - A/D analog reference voltage Connects PAN5V
97 AVCC - Power supply (5V) Connects PAN5V
98~100 NC - Not used Output L fixed
Truth value table
qKEY MATRIX
KR1 (Pin 74) KR2 (Pin 73)
KS1 (Pin 76) TI AM
KS2 (Pin 77) MENU <<
KS3 (Pin 78) AUDIO PLAY
KS4 (Pin 79) ATT >>
KS5 (Pin 80) N/A FM
MICROCOMPUTER’S TERMINAL DESCRIPTION

10
KDC-MP538U/MP6039/MP6539U/
W6041U/W6141UY/W6541U/W6641UY/X592
● How to enter the test mode
Press and hold the [FNC] and [EJECT] keys and reset.
(While ”----” is being displayed, power can be ON for 30
minutes.)
●How to clear the test mode
Reset, momentary power down, ACC OFF, Power OFF,
detach the panel.
●Test mode default condition
• Source is STANDBY.
• Display lights are all turned on.
• The volume is at 30 (-10dB).
• LOUD is OFF.
• CRSC is off regardless of the availability of switching
function.
• SYSTEM Q is NATURAL (=FLAT).
• BEEP should always function when the key is pressed
briefly.
• AUX is ON
• DISPLAY TYPE is TYPE A, SIDE is Display Tag.
• TUNER source display shall be as shown below:
<For European models> Upper row = PS/Frequency,
Middle row = Spectrum analyzer/Clock, Lower row =
Date
<For models of destination “K” and “M”> Upper row =
SNPS, Middle row = Spectrum analyzer/Clock, Lower
row = Date
• CD/USB source display shall be as shown below:
Upper row = P-TIME, Middle row = Spectrum analyzer/
Clock, Lower row = Date
• SOURCE SELECT shall be “2”.
• Illumination color shall be white as a preset color. (Except
KDC-MP6039)
●Specification of the test mode for tuner source
The frequency of 98.3MHz is received when the [4] key is
pressed in the TUNER FM mode.
(
∗1) Only in the test mode, [1] key, [2] key, [3] key, [4] key,
[5] key and [6] key shall be displayed on the multi-
function key.
1. Press the [FNC] key briefly to make the multi-
function display.
2. Rotate the control knob on the right side and use
the [ ] / [ ] keys to display the target key in the
center.
3. Press the [ ] key briefly to finalize the display.
(
∗2) Perform the same operations as above on the keys,
[1], [2], [3], [4], [5], and [6] of the remote controller.
●TUNER Setup adjustment mode specification
1. Use [FM] / [AM] key to select TUNER band.
2. Press and hold [ ] key for 2 seconds to enter TUNER
adjustment mode. At the same time, set FM receive fre-
quency to 98.3MHz.
3. Use [FM] / [AM] key to change between the adjustment
items.
FM Key FM Key
AM Key
AM Key
AM Key
FM Key
Seek Stop Level adjustment
(manual)
Soft Mute adjustment
Seek Stop Level adjustment
(auto)
(Note) The first item shall be Soft Mute adjustment.
But, in the case of AM band, the first item shall be
Seek Stop Level adjustment (auto) because there
is no Soft Mute adjustment for AM band.
4. Proceed with the following steps for every adjustment
item:
Soft Mute Adjustment
∗This item exists only in TUNER FM. Make adjustment
under the condition when VOLUME=30 and LOUD is
OFF.
(Display) SMD–x___ : Adjustment values, 0~F, are
shown in “x”.
a. Use [ ] / [ ] key to set the value between 0 (18dBu)
and F (36dBu).
b. After the completion of the adjustment, press and hold
[] key for 2 seconds to start writing the adjustment
values in E2PROM. At the successful completion of
the writing, “EP_WRITE” is displayed
Seek Stop Level Adjustment (Auto)
(Display) ATN_4.32V : When at Normal (Local OFF)
(Display) ATL_3.45V : When at Local (Local ON)
Current receive level
←
a. In the band in which Local Seek ON/OFF is selectable,
Press [AUTO] / [TI] key briefly to change between Lo-
cal Seek ON and OFF.
b. Press and hold [ ] key for 2 seconds to make the cur-
rent receive level to be the seek stop level in order to
start writing the adjustment values in E2PROM. At the
successful completion of the writing, “EP_WRITE” is
TEST MODE

11
KDC-MP538U/MP6039/MP6539U/
W6041U/W6141UY/W6541U/W6641UY/X592
displayed. (In this step, use Local Seek ON/OFF setup
to change the destination of the writing.)
Seek Stop Level Adjustment (Manual)
(Display) MNN_3.98V : When at Normal (Local OFF)
(Display) MNL_4.44V : When at Local (Local ON)
Adjustment values
Contents written in E2PROM as
the initial values are displayed.
←
a. In the band in which Local Seek ON/OFF is selectable,
Press [AUTO] / [TI] key briefly to change between Lo-
cal Seek ON and OFF.
b. Use [ ] / [ ] key to manually adjust the seek top
level between 0.00 and 4.49V (K/M), 0.00 and 4.70V (E),
0.00, depending on the destination.
∗
The key keeps functioning downwards after the level
becomes 0.00V but in the meantime the level will be-
come 0.00V as it is displayed.
c. Press and hold [ ] key for 2 seconds to make the volt-
age that is adjusted in the above step to be the seek
stop level and to start writing the voltage in E2PROM.
At the successful completion of the writing, “EP_
WRITE” is displayed. (In this step, use Local Seek ON/
OFF setup to change the destination of the writing.)
5. Press [ ] key briefly to exit from TUNER Adjustment
mode (and to keep running the Test mode).
●
RDS automatic measurement (European model)
Add the process to replace the visual inspection of PS
display previously done in the production line.
When it is confirmed that the PS data has been received
and that the content of the PS is “RDS_TEST”, force to
OFF the P-CON terminal. ( The symbol, “_” indicates the
blank. )
→ Make this as the process dedicated for the test mode.
P-CON is recovered by Power OFF→ON.
●Special display in tuner mode
Error is found in front-end, etc. if indications below are
displayed while in tuner mode.
• “TNE2P_NG”……E2PROM (inside front–end) values are
still default (not determined)
• “TNCON_NG”……Cannot communicate with the front-
end.
●K3I forced switching
Every time when [6] key is pressed in tuner FM mode,
switched in the following order: AUTO→Forced WIDE
→Forced MIDDLE→Forced NARROW→AUTO. Default
status is AUTO, and displayed as shown below.
• AUTO …
aF1 98.1
• Forced WIDE …
wF1 98.1
• Forced MIDDLE … mF1 98.1
• Forced NARROW … nF1 98.1
●CD source test mode specification
• Jumps to the following tracks by pressing the [ ] key.
9
→15→10→11→12→13→22→14→9 (recursive)
Note that when playing a CD-DA disc and MP3 / WMA
/ AAC / WAV discs with 8 files or less, the disc is played
from the 1 track in the normal order.
• Pressing the [ ] key goes back by 1 track from the track
being played.
• While in CD source, press the [1] key ([1] and [FM] keys
are for CD-DA) briefly to jump to No.28.
• While in CD source, press the [2] key briefly to jump to
No.14.
• While in CD source, press the [3] key briefly to display
CD mechanism model name and the version.
Press the [3] key briefly again to return to the normal dis-
play. (Time code display)
Model without USB
(KDC-MP6039)
6E20 V0123
Model with USB
(Others)
6E20 V0123
SERV V1.23
BOOT V1.23
• While in CD source, press the [6] key ([6] and [AM] keys
are for CD-DA) briefly to jump to No.15. At this time, the
volume value is set to 27 (2V PRE), 28 (4V PRE).
(
∗1) Only in the test mode, [1] key, [2] key, [3] key and [6]
key shall be displayed on the multi-function key.
1. Press the [FNC] key briefly to make the multi-
function display.
2. Rotate the control knob on the right side and use
the [ ] / [ ] keys to display the target key in the
center.
3. Press the [ ] key briefly to finalize the display.
(
∗2) Perform the same operations as above on the keys,
[1], [2], [3], and [6] on the remote controller.
TEST MODE

12
KDC-MP538U/MP6039/MP6539U/
W6041U/W6141UY/W6541U/W6641UY/X592
●AUDIO adjust mode
• Press the [AUD] key briefly to enter the audio adjustment
mode.
• Press the remote control [∗] key and [AUD] key to enter
the audio adjustment mode.
• Both AUDIO FUNCTION MODE and SETUP MODE ad-
justment items are included.
• By pressing [AUD] and [FM] key briefly, switch the item to
be adjusted in the following order. (Only in forward rota-
tion)
The default item shall be Fader, and then the item
is forwarded in the following order: Balance→Bass
Level→Middle Level→Treble Level→HPF Front→HPF
Rear→LPF Sub Woofer (thereafter arbitrary).
• Continuous forwarding by remote control is prohibited.
• Fader is adjusted by the VOL knob and [ ] / [ ] keys
in 3 steps: R15↔0↔F15. (Default value: 0)
• Balance is adjusted by the VOL knob and [ ] / [ ]
keys in 3 steps: L15↔0↔R15. (Default value: 0)
• Bass/Middle/Treble Level are adjusted by the VOL knob
and [ ] / [ ] keys in 3 steps: -8↔0↔8. (Default value:
0)
• HPF Front / Rear is adjusted by the VOL knob and [ ]
/ [ ] keys in 2 steps: Through↔220Hz. (Default value:
Through)
• LPF Sub Woofer is adjusted by the VOL knob and [ ]
/ [ ] keys in 2 steps: 50Hz ↔Through. (Default value:
Through)
• Sub Woofer Phase is adjusted by the VOL knob and [ ]
/ [ ] keys in 2 steps: Reverse↔Normal. (Default value:
Normal)
• Volume Offset (other than the internal AUX) is adjusted
by the VOL knob and [ ] / [ ] keys in 2 steps: -8↔0.
(Default value: 0)
• Volume Offset (the internal AUX) is adjusted by the VOL
knob and [ ] / [ ] keys in 3 steps: -8↔0↔+8. (Default
value: 0)
• Loudness ON/OFF is adjusted by the VOL knob and [ ]
/ [ ] keys in 2 steps: OFF↔ON. (Default value: OFF)
• Dual Zone ON / OFF is adjusted by the VOL knob and
[] / [ ] keys in 2 steps: OFF↔ON. (Default value:
OFF)
• Bass f / Bass Q / Bass EXT / Middle f / Middle Q / Treble
f are not displayed in the audio adjustment menu.
• SYSTEM Q (dB EQ) curve selection is not displayed in
the audio adjustment menu.
●MENU
• Press the [FNC] key briefly to make the multi-function
display and press the [ ] key briefly to enter the MENU.
• Press the remote control [DNPP/SBF] key and the
[DIRECT] key to enter the MENU.
• Continuous forwarding by remote control is prohibited.
• The initial item in TUNER source MENU source during
the Test mode shall be selectable between Seek ON and
OFF. (European model)
• Only in the Test mode, it shall be made possible to show
“ROM Write Mode” and “ROM Read Mode” items in the
STANDBY source MENU to allow the ROM data transfer
process.
●ROM data transfer
This function is used to transfer E2PROM data (installer
memory) inside of the front-end to mother E2PROM of
the backup, and to transfer the data back from the moth-
er E2PROM to the E2PROM of the front-end.
How to transfer ROM data
qEnter the Test mode (All lights go on).
wPress [FNC] key briefly while all lights are on to enter
in the Menu mode.
e
Select “ROM Read Mode (Front-end→Mother)” or
“ROM Write Mode (Mother→Front end)”, and press
and hold [ ] key for one second to turn Mode ON.
Operation Display Description
Start resetting by
pressing “[FNC]
key + [EJECT]
key”
All lights ON Test mode ON
Press [FNC] key
to select [Menu]
mode.
“ROM_Read_Mode”
Front-end→Mother
Process to transfer data
“ROM_Write_Mode”
Mother→Front-end
Process to transfer data
(In the above
ROM Read Mode)
Press and hold
[] key (for one
second) to select
Yes.
“ROM_Reading…” Front-end→Mother
ROM data transfer in progress
“ROM_Read_OK” Front-end→Mother
ROM data transfer OK
“ROM_Read_NG” Front-end→Mother
ROM data transfer NG
(In the above
ROM Write Mode)
Press and hold
[] key (for one
second) to select
Yes.
“ROM_Writing…” Mother→Front-end
ROM data transfer in progress
“ROM_Write_OK” Mother→Front-end
ROM data transfer OK
“ROM_Write_NG” Mother→Front-end
ROM data transfer NG
TEST MODE

13
KDC-MP538U/MP6039/MP6539U/
W6041U/W6141UY/W6541U/W6641UY/X592
Example of detail display: Display in the case of E2PROM
Write
CD Read : 1
Rom Write Mode
Rom Read Mode
Security Set
MENU
Rom Write Mode
Rom Writing ...
Rom Write OK Rom Write NG
NO YES
Press [PLAY] / [PAUSE]
for one second.
When [FNC] is
pressed briefly
and when No
is selected
F/E→Mother
NG to transfer ROM data
F/E→Mother
OK to transfer
ROM data
[FNC] key is inhibited during
Writing and Reading operations
When YES is selected and
[PLAY] / [PAUSE] is pressed briefly
●Dual Zone
• If the [AUTO] or [TI] keys is pressed briefly while in a
source other than STANDBY, 2ZONE is switched be-
tween ON / OFF.
●Backup current measurement
If reset while in Acc OFF (Back Up ON) condition, MUTE
terminal goes off 2 seconds later, rather than 15 seconds.
(During this time, the CD mechanism does not function.)
●Special displays while all lights are on
When all lights are on with STANDBY source, if the fol-
lowing keys are pressed, the following messages are dis-
played.
[FM]
key
Key pressed briefly: ROM correction version is displayed
(Display) SYS_ROM_R1234
(Display) PAN_ROM_R1234
(Display) BOL_ROM_R1234
When E2PROM is not installed: ROM_ERR__
When not written in: ROM_R - - - -
When data not matching: ROM_R∗∗∗∗
∗1 “BOL ROM” can not be shown in KDC-MP6039.
[ ]
key
Key pressed briefly: AUDIO data initialization
(Display) AUD_INIT
[]
key
Key pressed briefly: Forced Power OFF data displayed.
Press and hold: To clear the forced power OFF infor-
mation. (Press and hold for 2 seconds while the forced
power OFF data is displayed.)
(Display) POFF_ - - - (No Forced Power OFF)
SEC (Forced Power OFF because of
missing Security Code)
PNL (Forced Power OFF because of
system μ-com and panel commu-
nication error)
[AUD]
key
Key pressed briefly: iPod authentication IC installation
status display
(Display) iPod_ OK_ (Installation status OK)
NG (Installation status NG)
[FNC]
key
Key pressed briefly: Multi-function display
Press and hold: Version & Service information display
mode ON
Refer to the Table 1.
[1]~[6]
Key
(Remote
controller)
Key pressed briefly: Version & Service information display
mode ON
Refer to the Table 1.
[]
key
Key pressed briefly: CD information display mode ON
Refer to the Table 2.
TEST MODE

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KDC-MP538U/MP6039/MP6539U/
W6041U/W6141UY/W6541U/W6641UY/X592
Table 1 - Version & Service information display mode
[AM]
key
↑
↓
[FM]
key
[1]
key
(Remote
controller)
Key pressed briefly: Version is displayed
(Display) C0724WK__SYS1.23
(Display) STYPE: xx_PAN1.11
(Display) PTYPE: x__
∗1 STYPE indicates system μ-com destination, and
PTYPE indicates panel μ-com destination, and
show real-time condition of the destination termi-
nal
[2]
key
(Remote
controller)
Key pressed briefly: Serial No. is displayed (8 digits)
(Display) SNo_××××××××
[3]
key
(Remote
controller)
Key pressed briefly: Power ON time is displayed.
(Display) PonTim_0H××_ (00~50 is displayed for “xx”.
When less than 1 hour,
display by increment of 10
minutes.)
××××× (00001-10922 is displayed
for “xxxxxx”.)
MAX 10922 (hours)
[4]
key
(Remote
controller)
Key pressed briefly: CD operation time is displayed.
(Display) CDTim_0H××_ (00~50 is displayed for “xx”.
When less than 1 hour,
display by increment of 10
minutes.)
××××× (00001-10922 is displayed
for “xxxxxx”.)
MAX 10922 (hours)
[5]
key
(Remote
controller)
Key pressed briefly: Number of CD EJECT times is
displayed.
(Display) EjeCnt_××××× MAX 65535 (times)
[6]
key
(Remote
controller)
Key pressed briefly: Illumination color change (In
this mode, [ ] / [ ] key can be used to change
color.)
White (R255/G255/B255) →Red (R255/G0/B0) →
Green (R0/G255/B0) →Blue (R0/G0/B255) →White
(R255/G255/B255) →Red (R255/G0/B0) →...
(Display) Illumi_Color ∗Except KDC-MP6039
[] key Key pressed briefly: Invalid
Press and hold: To clear the service information that
is being displayed. (Press and hold for 2 seconds
while each service information is displayed.)
[FNC] key Key pressed briefly: Version & Service information
display mode OFF
Table 2 - CD information display mode
[AM]
key
↑
↓
[FM]
key
I2C communication condition and CD mechanism error log
display
(Display) I2C_{{____________
(Display) ERR_1-UU, 2-U, 3-UU
∗
“OK” or “NG” is displayed for “{{”. / “—“ or the error
code is displayed for “U/U”.
CD loading error log display
(Display) Load_Error____
(Display) __(1) xx__ (2) xx
(Number of times is displayed for “xx”.) MAX 99 (times)
CD ejection error log display
(Display) Eject_Error___
(Display) __(1) xx__ (2) xx
(Display) __(3) xx__ (4) xx
(Number of times is displayed for “xx”.) MAX 99 (times)
CD time code error count data display (missing counts)
(Display) Count_Lose
(Display) __CDDA_: xx
(Display) __CDROM: xx
(Number of times is displayed for “xx”.) MAX 99 (times)
CD time code error count data display (count not updated)
(Display) Count_Stay
(Display) __CDDA_: xx
(Display) __CDROM: xx
(Number of times is displayed for “xx”.) MAX 99 (times)
[]
key
Key pressed briefly: CD information display mode OFF
Press and hold: To clear entire CD information (Press and
hold for 2 seconds)
●Initializing AUDIO-related setting value
Press the [ ] key briefly in the STANDBY source to reset
the AUDIO setting value to the test mode default value.
●Other
• When Power ON, do not display “CODE_NG”, “CODE_
OFF”, and “CODE_ON”.
• When the source is STANDBY, press and hold the [AUTO]
or [TI] keys for 1 second to switch the PREOUT between
Rear and Sub Woofer (Rear↔Sub Woofer).
• When started in the test mode, duration of prohibiting
LINE MUTE shall be changed from 10 seconds to 1 sec-
ond.
• When in the test mode, when DC offset error detection
is run, the detection information is not written into the
E2PROM.
• When in the test mode, even if the specified time has
passed, back-up memory items are not written into
E2PROM.
DEMO mode shall not be operated while in the test
mode, Backup/Installer Memory & CD Mechanism Infor-
TEST MODE

15
KDC-MP538U/MP6039/MP6539U/
W6041U/W6141UY/W6541U/W6641UY/X592
mation & Service Information & DC offset Error Detection
Information Clear Mode, or DC offset Error Detection In-
formation Clear Mode.
• Also, do not display DEMO ON/OFF option items in the
MENU in STANDBY source in the above modes.
●Clearing backup / installer memory & CD mech-
anism information & service information & DC
offset error detection information
(Clearing E2PROM data)
1. While pressing and holding the [SRC] and [AUD] keys,
reset-start to start initializing the backup/installer memo-
ry data, CD mechanism information, service information
and DC offset error detection information.
(While “----” is being displayed, power can be ON for 30
minutes.)
[CD mechanism information]
• Displays I2C communication condition
• Displays CD mechanism error log
• Displays CD loading error data.
• Displays CD ejection error data.
• Displays CD time code error count data (missing
count).
• Displays CD time code error count data (count not up-
dated).
[Service Information]
• Displays power ON time is displayed.
• Displays CD operation time.
• Displays number of CD EJECT times.
• Displays forced Power OFF data.
[DC offset error detection information]
• DC offset error detection display 1
• DC offset error detection display 2
2. After the initialization process is completed, the following
is displayed.
When successfully completed
E2P_CLR: K
When finished but unsuccessful: Initialization NG
E2P_CLR: x
3. In this mode, even if the specified time has passed, the
backup memory items are not written into E2PROM.
4. This mode is cancelled by resetting. (The last screen will
not be retained.)
(Note) In this mode, the DC error detection display, “Pro-
tect” is not shown.
●Clearing DC offset error detection information
(Clearing E2PROM data)
1. Press and hold [ATT] and [AUD] keys and reset-start to
go into the DC offset error display mode.
(While “----” is being displayed, power can be ON for 30
minutes.)
2. While in STANDBY source, the current DC offset error
detection condition is displayed.
Upper
row
DC offset error detection display 1 (To show such detec-
tion as the improper connection, and other detection)
(Display) DC1_OK__ (not detected)
ERR (Improper connection or other error
is detected.)
Middle
row
DC offset error detection display 2 (To show the number
of capacitor leaks.)
(Display) DC2_0___ (not detected)
1 (Leak is detected once.)
2 (Leak is detected twice.)
3 (Leak is detected 3 times.)
4 (Leak is detected 4 times or more.)
3. While the DC offset error detection condition is being
displayed as above, press and hold [1] key for 2 seconds
to clear the information about the improper connection,
and other detection. Press and hold [2] key for 2 seconds
to clear the information about the number of capacitor
leaks. (Clear E2PROM)
4. DC offset error display mode is cancelled by resetting.
(The last screen will not be retained.)
(Note) In this mode, the DC offset error detection display,
“Protect” is not shown.
●FM/AM channel space switching (Models for
destination “K” and “M”)
FM: 50kHz↔200kHz, AM: 9kHz↔10kHz
• While power is OFF, press and hold [FNC] and [AUTO]
keys, and press [SRC] key to power ON.
TEST MODE

16
KDC-MP538U/MP6039/MP6539U/
W6041U/W6141UY/W6541U/W6641UY/X592
●Security
How to enter the forced POWER ON mode
While “_ _ _ _” is being displayed, while simultaneously
pressing [FNC] key and [ ] key, press [RESET] button,
With this, it is possible to turn the power on for 30 min-
utes only.
●How to register the security code on the “Car
Audio Passport” sheet after replacing E2PROM
(inside the front-end) (Models for destination
“M” and “E”)
1. Enter the test mode. (Refer to “How to enter the test
mode”.)
2. Press the [FNC] key briefly to make the multi-function
display and press the [ ] key briefly to enter the
MENU.
When “Security” is displayed, press [ ] key for 1 sec-
ond or longer to enter the security registration mode.
3. Enter codes with the operation knob in the right side
or with the [FM] / [AM] and [ ] / [ ] keys.
CW rotation of the operation knob, [FM] key: number
up
CCW rotation of the operation knob, [AM] key: number
down
[ ] key : cursor to right
[ ] key : cursor to left
4. After inputting the code, press [ ] key for 3 seconds
or longer which causes “RE-ENTER” to be displayed.
This is for “confirming” the code. Use the method in
the step 3 to re-enter the code.
5. Then, press [ ] key for 3 seconds or longer, which
will display “APPROVED”. This completes the security
code registration
6. Release the test mode. (Refer to “How to clear the test
mode”.)
∗Note: All clear cannot be used to clear the security
code.
●How to clear the programmable security code
(KDC-MP538U/X592)
1. While “_ _ _ _” is being displayed, press [ ] key for 3
seconds or longer while pressing the [AUTO] or [TI] keys.
(This makes the “_ _ _ _” display disappear.)
2. Input “KCAR”, using the remote controller.
Press [5] key of the remote controller 2 times (Input for “K”)
and press [ ] key.
Press [2] key of the remote controller 3 times (Input for “C”)
and press [ ] key.
Press [2] key of the remote controller once (Input for “A”)
and press [ ]key.
Press [7] key of the remote controller 2 times (Input for “R”)
and press [ ] key.
3. The security is cleared and the unit enters STANDBY
mode.
4. If wrong codes are input, “_ _ _ _” will be displayed
again.
TEST MODE

17
KDC-MP538U/MP6039/MP6539U/
W6041U/W6141UY/W6541U/W6641UY/X592
At specialists (or specialty stores), when the installer sends
the vehicle back to the user, they may make the store-rec-
ommended audio configuration.
When the user changes the setting values, when the backup
power supply was taken out at times of battery change or
when the reset button was pressed, to make it possible to
recall the setting values, the store-recommended configura-
tion values can be saved into E2PROM.
The specification detail defer in “with-DSP model” and in
“without-DSP model”.
[Models without DSP]
• Calling and saving the configuration is done by the
MENU.
• Items to be saved are Bass, Middle, Treble, X’over, and
Sub Woofer Level. Only one setting can be saved for
each item (Bass/Middle/Treble settings can be changed
for each source, but only one setting can be saved as the
installer memory specification, and the source in which
the saving operation was carried out is saved as such).
INSTALLER MEMORY SPECIFICATIONS
• The contents read out by the call key shall be reflected
only to the current source at the time→EQ curve is
“USER” (Bass/Middle/Treble settings can be changed for
each source, but not reflected to Bass/Middle/Treble set-
tings of sources other than where the calling operation
was carried out).
• When the backup power supply was taken out at times
of battery change or when the reset button was pressed,
as the initial setting values of Bass, Middle, Treble, X’over,
and Sub Woofer Level, the saved memory is reflected.
(Bass/Middle/Treble setting initial setting value memory
is reflected in all sources.)
[NOTE] By such, EQ curve initial setting shall always be
“USER” (NOT “NATURAL” or “FLAT”).
BACKUP MEMORY SPECIFICATIONS
Settings by the user other than the installer memory items
are saved into the E2PROM, and when the backup power
supply was taken out at times of battery change or when
the reset button was pressed, it is made possible to recall
the setting values saved.
• While Power ON, the memory is saved and accumulated
at a certain interval (temporary).
• Items to be saved into the memory are: Volume Offset (for
all sources) and preset frequencies (FM/AM all bands x 6
channels).
• When the backup power supply was taken out at times
of battery change or when the reset button was pressed,
as the initial setting values of Volume Offset (for all sourc-
es) and preset frequencies (FM/AM all bands x 6 chan-
nels), the saved memory is reflected.
• In models which includes channel space switching, when
channel space is switched, TUNER-preset frequencies
are set back to the default values.

18
Refer to the schematic diagram for the values of resistors and capacitors.
KDC-MP538U/MP6039/MP6539U/
W6041U/W6141UY/W6541U/W6641UY/X592
Refer to the schematic diagram for the values of resistors and capacitors.
ABCDE
1
2
3
4
5
6
7
VCC OUT
GND
C2
VOL
AUD
ATT
SRC
RST
C3
C4
C12
FNC
TI/AUTO
122
FM+
AM-
ED1
S1 S8
S7
D1
D2
D3
D4
D7
D8
D9
D11
D12
D16
D5
D6
D13
S2
S3
S4
S5
S6
IC3
SWITCH UNIT (BLUE LEDs)
X16-633x-xx (J76-0503-12)
SWITCH UNIT (BLUE LEDs)
X16-633x-xx (J76-0503-12)
R10
R12
CP19
CP18
CP20
R2
C66
C45
R67
R68
R81
R1
R3
R5
R6
R7
C75
C77
C85
C86
CP16
R73
C46
R79
C91
CP1
CP2
C47
R52
C63
C64
C71
C72
C73
C74
C76
C81
C82
C83
C84
CP4
CP6
R76
R78
R80
X1
C61 C62 C65
R61
R63
119
220
C7
C9
C11
C16
C43
CP3
CP5
CP11
CP12
CP13
CP14
CP15
CP17
L1 L2
C5
R62
R69
R71
R72
R74
R75
C6
C13
R47
R46
R45
R48
R44
R43
R42
R41
R49
R50
R51
CP21
R64
R65
R66
5
81
4
43
21
1
100
76
25
51
75
50
26
BE
BE
BE
EB
BE
BE
BE
J1
D41
D19
D20
Q1
Q3
Q4
Q5
Q6 Q7
D40
D18
D92
D93
D94
D95
Q11
IC1
IC2
IC4
RTLY2 CCW
RTLY1 CCW
FL+B ESD GND
SDA SCL
RTLY2 CW
ILL DGND
CNVSS
ILL+B
PAN5V
TP2
FL GND
RTLY1 CW
TP33
TP4
TP3
TP22 TP24
TP1
TP20 TP19
TP17
TP5
TP6
TP7
TP8
TP18
TP21
TP23
TP25
TP26
TP27
TP28
TP29
TP30
TP41
TP42
TP43
TP44
TP45
TP46
TP47
TP48
TP49
TP50
TP51
TP52
TP72
TP74
TP75
TP76
TP91
TP92
TP71
TP11
TP10
TP9
TP13
TP12
TP14
F-DC
TP16
TP15
X16-633x-xx
Ref. No. Address
IC3 6A
X16-633x-xx
Ref. No. Address
IC1
Q1
Q3
Q4
Q5
Q6
Q11
4D
6D
6D
3D
5D
2D
5D
(FOIL SIDE VIEW)
PC BOARD (KDC-MP538U/MP6039/W6041U/W6141UY/X592)
(COMPONENT SIDE VIEW)

19
Refer to the schematic diagram for the values of resistors and capacitors.
KDC-MP538U/MP6039/MP6539U/
W6041U/W6141UY/W6541U/W6641UY/X592
JIHGF
1
2
3
4
5
6
7
SWITCH UNIT (RGB LEDs)
X16-634x-xx (J76-0504-12)
C25
C27
C37
C38
ED1
S8
S1
D22
D25 D26
D27 D28
S7
D1
D21
D23
D24
D29
D30
D31
S2
S3
S4
S5
S6
IC3
VCC OUT
GND
VOL
AUD
ATT
SRC
RST
FNC
TI/AUTO
122
FM+
AM-
SWITCH UNIT (RGB LEDs)
X16-634x-xx (J76-0504-12)
C23
C24
CP19
C66
CP18
R67
R68
R81
R1
R21
R22
R23
R24
R25
R26
R27
CP20
R29
R30
R31
R32
R33
R34
R35
R36
R37
R38
C75
C77
C85
C86
CP16
R73
R2
R79
C91
CP1
CP2
C45
C63 C64
C46
C71
C72
C73
C74
C76
C81
C82
C83
C84
CP8
C47
R76
R78
R80
R52
X1
C61 C62 C65
R61
R63
C21
C22
C26
C31
C32
C33
C34
C35
C36
C39
C40
C41
C42
C43
CP7
CP11
CP12
CP13
CP14
CP15
119
220
CP17
L1
L2
R28
R62
R69
R71
R72
R74
R75
R47
R46
R45
R48
R44
R43
R42
R41
R49
R50
R64
R65
R66
R51
CP21
1
45
8
43
21
25
26
1
100
75 76
50
51
EB
EB
BEBE
BE
J1
D41
D19
D20
Q21
Q22 Q23
D18
D40
D92
D93
D94
D95
Q1
Q1
IC1
IC2
IC4
SCL
SDA
ESD GND
PAN5V
CNVSS
RTLY2 CW
FL+B
ILL+B
RTLY2 CCW
RTLY1 CCW
ILL GND
FL GND
RTLY1 CW
TP33
TP4
TP3
TP2
TP24
TP1
TP20 TP19
TP17
TP5
TP6
TP7
TP8
TP9
TP10
TP18
TP21
TP23
TP25
TP26
TP27
TP28
TP29
TP30
TP41
TP42
TP43
TP44
TP45
TP46
TP47
TP48
TP49
TP50
TP51
TP52
TP72
TP74
TP75
TP76
TP92 TP91
TP11
TP12
TP13
TP14
F-DC
TP16
TP15
X16-634x-xx
Ref. No. Address
IC3 6F
X16-634x-xx
Ref. No. Address
IC1
Q1
Q21
Q22
Q23
4H
5I
3I
3I
3I
(FOIL SIDE VIEW)
PC BOARD (KDC-MP6539U/W6541U/W6641UY)
(COMPONENT SIDE VIEW)

20
KDC-MP538U/MP6039/MP6539U/
W6041U/W6141UY/W6541U/W6641UY/X592
KLMNO
1
2
3
4
5
6
7
50
64
3
1
1
1
1
127
226
1
4
119
220
1
1576109
2348121113
1
7
1
1
1
51
30
C141
C304
C615
C469
C327
C101
C102
C103
C104
C464
C468
C508
C329
C336
C328
C326
C506
C401
C402
C405
C406
C409
C410
C423
C432
C453
C454
C461
C462
C511
C512 C513
C514
X301
W321
1
SOC RST
SOC RST
24
1
25
26
L704
R657
R345
C452
C451
C142
R124
CP601
C619
C704
R711 R769
L601 R662
R691
CP607
C505
R305
R618
CP606
R664
TH500
C303
C306
R306
R514
C604
C612
C614
C616
R602
R622
CP609
R647
R648
R661
C467
R110
W101
C617
C618
C516
C606
C335
R340
C753
C309
C708
C7
0
R634
R636
X601
C106
C754
C463
R772
R771
R775
R776
R111
R508
C307
C333
C601 C602
C613
C701
C702
C703
C714
C715
X700
R309
X750
R123
R125
R126
R141
R145
R333
R339
R341
R635
R604
R653
R659
R673
R704
R714
R7
3
R773
R774
R310
X602
C424
C443
R212
R426
R442
R505
C609
R649
C105
C305
C308
C331
C332
C334
C337
C431
C433
L322
L324
L323
CP602
CP603
CP605
CP608
CP610 CP611
CP612
L321
R698
R697
C521
L
L701
L702
R699
R112
R113
R114
R121
R122
R143
R148
R215
R301
R302
R303
R308
R331
R332
R334
R335
R336
R337
R338
R431
R436
R437
R438
R439
R441
R453
R506
R507
R510
R512
R601
R606
R608
R609
R611
R615
R616
R631
R646
R651
R652
R654
R655
R658
R663
R666
R683
R684
R685 R686
R687
R688
R689
R690
R692
R700
R701
R707
R708
R709
R710
R713
R715
R716
R731
R734
R735
R744
R745
R696
R156
R641
C507
C8
4
49
3217
16
1
33
48
100
25
26
10
21
30
31
40 11
20
4
58
5
6
10
16
20
1115
14
8
14
8
1
7
4
58
85
4
41
58
41
85
100
76
75
12
8
916
BE
BE
BE
BE
BE
BEBE
BE
BEBE
BE
BE
BE
BE
EB
EB
EB
P681
Q101
J681
J431
A322
C
N
J401
J421
D71
CN701
D121
Q141
Q142
Q603
Q703
Q407
Q408
Q681
D401
D402
D453
D454
D455
D103
D102
D442
Q201
D141
D144
D331
Q121
Q122
Q331
Q602
Q682
Q704
Q202
D421
D422
D423
D431
D432
D433
D434
D439
D440
D504
D508
D611
D681
D682
D683
D684
D685 D686
D687
D691
D692
D693
D104
D123
D142
D145
D20
2
D403
D404
D501
D502
Q145
D507
D509
D510
D506
D505
D503
Q
IC501
IC750
IC101
IC605
IC607
IC700
IC602
IC301
IC604
IC601
IC451
IC603
IC331
IC753
IC751
ELECTRIC UNIT
X34-588x-xx (J76-0502-12)
CNVSS
DGND
LOE SW
CD SO
CD SI
MSCL
MSDA
NOISE
SMETER
VREF
RDSMUTE
SMETER
FE SCL FE SDA
IFC OUT
SCL
SDA
PC BOARD (COMPONENT SIDE VIEW)