Kenwood KDC-W8534 User manual

© 2005-12 PRINTED IN JAPAN
B53-0361-00 (N)825
CD RECEIVER
KDC-W8534/W8534Y
KDC-X790
SERVICE MANUAL
This product uses Lead Free solder.
Panel assy
(A64-3730-02)
MODEL TDF PANEL No. TDF NAME
KDC-W8534/W8534Y Y33-2430-63 TDF-W8534
KDC-X790 Y33-2430-60 TDF-67DX
TDF PANEL INFORMATION
A unique identification number (Unique ID) is given to each unit,
which is imprinted on the CD mechanism assembly. If and when the
mechanism assembly or Flash ROM (IC17) on the mechanism board
is replaced, it is necessary to write the Unique ID. For details, refer
to "How to Write the Unique ID" on Page 24.
CD MECHANISM EXTENSIONCORD (24P) : W05-0934-00
DC cord (K type)
(E30-6408-05) DC cord (E type) (E30-6412-05)
Escutcheon
(B07-3125-01) Mounting hardware assy (J21-9716-03)
Remote controller assy
(A70-2067-15)
Lever
(D10-4589-04) x2 Antenna adaptor (E type)
(T90-0523-05)
Carrying case
(W01-1661-05): E type
(W01-1664-05): K type
Compact disc
(W01-1647-15): E type
(W01-1643-25): K type
Screw set (K type)
(N99-1758-05) Tapping screw (N09-6280-05)
Panel assy
(A64-3734-02)
RC-527
KDC-X790
(K type)
KDC-W8534
KDC-W8534Y
(E type)
SIZE AA BATTERY
(Not supplied)

KDC-W8534/W8534Y
KDC-X790
2
BLOCK DIAGRAM
AM+B
F/E
A1
CD
LX BUS
SW5V
A8V
A8V AGC
E-VOL
LPF DAC LPF
A3.3V A5V
D3.3V D5VBU5V
A8V
A3.3V REF+B
SVR REF
PRE
MUTE AMP
OP
IC
POWER
9V
PRE OUT
PRE OUT
PRE OUT
AUX IN
SHIFT
LEVEL
D3.3V
IC303 IC305
IC1
IC5 IC3
IC4
IC800 Q802
Q608-613
IC800
IC750
Q402
IC300 IC601-603
IC103
DRIVER
MUTE
BU5V
IC102
RDS
DECODER
IC400
IC100
MD-DET
MEMO
INSTALLER
ROM CORR
SW5V
BU5V
A8V
D5V
SERVO
Q450
DSI
BU5V
UP
BACK
RESET
IC BU5V
u-COM
OPEL DISP
P-CON
ANT-CON
EXT AMP
ACC DET
DIMMER
SURGE DET
B.U DET
Q20
BU5V
SW16V
Q50
Q41
ILL+B
SW14V
IC10
A8V
Q12
IC600
DC/DC
(5VPRE)
+B
MOTOR
Q30
PANEL
5V
(FL)
SERVO
Q63
FL DC
Q31
DC/DC
IC80
DRIVER
MOTOR
IC450
CD5V
Q64
SW5V
Q22
MECHA
PANEL
CLOSE
OPEN/
DET
P CON
ANT CON
EXT.AMP.CON
DIMMER
ACC
BACK UP
LINE
PANEL
SP OUT(FR)
SP OUT(RL)
SP OUT(FL)
SP OUT(RR)
REMOTE
D3.3V
IC11
SW5V
Q7,8
D2.5V
IC10
FL+BFL3.3V
FL
Q6
SW3.3V
PANEL
u-COM
IC4
RESET SW
IC1
FLASH ROM
ENCODER
ROTARY
IC2
IC6
KEY ILL
BU5V
SW5V
SERVO
D5V
A8V
9V
ILL+B
Q40
ED1
ILL+B
(SW)
(FRONT)
(REAR)
WIRED
Q205
Q203,204
Q202
Q207
Q206
Q208
IC200
KEY
Q10
TEL MUTE
COMP
DRIVE
3.3V
ADC
DSP
IC5
RESET
IC
KEY MATRIX
LEVEL
SHIFTSHIFT
LEVEL
SPE ANA
IC3
CORR
ROM
REMO.
CON.
(FST)
MD
E2PROM
FST
FM/AM
AUX
CH
CDorMD
SPE
MUTE A,C
MUTE 0,1,2
WININ OFFSET
RST
MUTE A,C
STBY
for
MPX
RDS
RST
ANA
SPE
ANA
DCERR
PRE MUTE
MUTE 0,1,2
PANEL
TR COIL
FO COIL
C
F
AB
E
PD
LD
SERVO DSP
MOTOR
DRIVER
SP MOTOR
LOADING &
MOTOR
SLED
IC4
IC2
u-COM
IC1
MP3/WMA/AAC
IC15
IC5
3.3V REG.
3.3V REG.
IC21
1.8V REG.
IC20 IC19
3.3V REG.
IC14
5V REG.
SW
DAC
3.3 5V
3.3 5V
3.3 5V
3.3 5V
LPF
IC18
IC13
16MBIT
SDRAM
IC16
ROM
FLASH
IC17
4MBIT
D5V
S7.5V
A8V
BU5V
RF AMP
DECODER
ACD DECODER
16.898MHz
SW3.3V(712)
S7.5V
RESET
SCK
SI
STB
A0
SO
INTQ
POWER ON 26.88MHz BU3.3V
D5V
FLAG
C16M
BCLK
DATA
LRCK
SW3.3V
SW3.3V
SW1.8V
(CS7410)
(CS7410)
(712)
POWER ON
BU3.3V
SW5V
BU5V
A8V
RESET
DATA MUTE
SREQ BREQ
DOCS
CLK
DI PCM DATA
PCM BCLK
PCM XCK
PCM LRCK
DAC RST
DAC MUTE
INFINITY 0 DET.L/R
SER/GPIO
L/R
AUDIO MUTE
I2C
MSTOP,MRESET
LOE/LIM SW
8EJE-SW
LOS-SW
12EJE-SW
L/R
SW3.3V(712)
CONTROLLER
MEMORY
8BIT
0-2MB
ROM
DRAM
256k-8MB
4,8,16BIT
(CS7410)
SW3.3V
2x512kx16BIT
512kx8BIT
SW3.3V
(CS7410)
SW5V
EMPH
I2S
CD I/F
DAC CONTROL
SW3.3V
(CS7410)
SW1.8V
&
CD PLAYER UNIT (X32-5730-0x)

3
KDC-W8534/W8534Y
KDC-X790
COMPONENTS DESCRIPTION
●ELECTRIC UNIT (X34-3730-12/4242-7x)
Ref. No. Application / Function Operation / Condition / Compatibility
IC1 DSP Analog Power Supply Output 3.3V.
IC3 DAC Digital Power Supply Output 5.0V.
IC4 DAC Analog Power Supply Output 5.0V.
IC5 DSP Digital Power Supply Output 3.3V.
IC10 Audio 8V Ref Power Supply Output 1.27V.
Power Supply for VFD & Mecha digital.
IC60 Switching Regulator Controller CH1 :VFD (4.7V)
CH2 : Mecha digital (DXM-680x : 4V , Other : 5V)
IC80 Switching Regulator Power supply forVFD. (57V)
IC100 Reset IC “L” when detection voltage goes below 3.6V or less.
IC102 System µ-com Controls FM/AM tuner, the changer, CD/MD mechanism,
Panel, volume and tone.
IC103 Muting logic IC Controls logic for muting.
IC104 EEPROM For instraller’s memory
IC200 Power Control IC Power control switch
IC300 Eelectrical Volume & Source Selecter Controls the source, volume, and tone.
IC301,302 Audio buffer AMP Low pass filter for DSP input.
IC303 DSP Digital signal processer.
IC304 Buffer IC It changes into 3.3V from 5.0V.
IC305 DAC Digital to Analog converter.
IC306~308 Audio buffer AMP Low pass filter for DAC output.
IC400 RDS decoder
Panel mecha control
IC450 Panel mecha motor driver
IC451 G-Analyzer Analog gravity sensor.
IC600 ±9V AVR Power supply for 5V Pre Out OP-AMP.
IC601~603 5V Pre-out AMP Output buffer and gain control.
IC750 Power IC Amplifies the front L/R and the rear L/R to 50W maximum.
IC800 Audio3.3V Ref Supply Audio 3.3V Ref supply to electrical volume and all low pass filters.
SVR6.8V Ref Supply SVR6.8V Ref supply to power IC.
Q10,11 Audio8V AVR When Q11’2in goes Hi, A8V AVR outputs 8.0V.
Q12 SW14V When Q12’2pin goes Hi, SW14V outputs 14V.
Q20,21 B.U.5V AVR While BU is applied, BU5V AVR outputs +5V.
Q22,23 SW5V When Q23’base goes Hi, SW5V outputs +5V.
Q30,32 Moter+B AVR (Panel Mecha) When Q9’base goes Hi, Moter+B AVR outputs 7.5V.
Q31,33 Servo+B AVR When Q33’base goes Hi, Servo+B AVR outputs 8.5V.
Q40,42,45 Panel5V AVR When Q42’ 2pin goes Hi, anel5V AVR outputs 5V.
IN1 IN2 Panel mecha
LLWAIT
LHOPEN
HLCLOSE
HHSTOP

KDC-W8534/W8534Y
KDC-X790
4
COMPONENTS DESCRIPTION
Ref. No. Application / Function Operation / Condition / Compatibility
Q41,43,44 Illumination AVR When Q43’2pin goes Hi, Ill AVR outputs 10.5V.
Q50~52 SW16V (Surge Protection) When Q51’2pin goes Hi, SW16V outputs 13V.
Q60 VFD (4.7V) AVR SW When base goes Hi, VFD AVR off.
Q61 Switching Regulator frequency control SW (IC60)
Q62 Mecha digital AVR SW When base goes Hi, Mecha digital AVR off.
∗DXM-680x : 4V, Other : 5V
Q63 VFD (4.7V) AVR Switching Power Driver This FET is governed by IC60.
Frequency is decided at Q61.
Q64 Mecha digital AVR Power Driver This FET is governed by IC60.
Frequency is fixed 400kHz.
Q80,81 VFD (57V) AVR SW When Q81’ base goes Hi, VFD (57V) AVR outputs 57V.
Q91 Panel5V Discharge SW When Q91’base goes Hi, Panel5V is discharged.
Q100,101 Panel Detect SW When Q100’base goes Lo, panel is detected.
Q200,201 Pre-out mute driver When a base gose Lo, mute driver is turned on.
Q202 Acc Detect SW When Q202’base gose Hi, Acc voltage is detected.
Q204 Surge Detect SW When Q204’ base goes Hi, IC750 is changed into a standby state.
Q205 B.U Detected SW When Q35’base gose Hi, B.U voltage is detected.
Q206 Ext Amp Control Buffer It is buffer for IC102 output.
Q207 Small-lamp Detect SW When Q207’ base goes Hi, Small-lamp is detected.
Q208,209 Power Antenna SW When Q206’base goes Hi, power antenna switch outputs 14V.
Q300 DSP mute SW When base goes Lo, DSP is set to mute.
Q402,403 AM+B SW When Q403’base gose Hi, AM+B is outputs.
DSI lights when the base is “L”.
Q450 DSI Driver DSI turns off when the base is “H”.
DSI turns on and off when panel is taken off.
Q600~602 Pre-Amp +9V AVR Q600 and 602 works as a differential amplifier,
Q601 works as a driver and +9.4V is supplied to OP Amp for Pre-out.
Q603~605 Pre-Amp -9V AVR Q603 and 605 works as a differential amplifier,
Q604 works as a driver and -9.1V is supplied to OP Amp for Pre-out.
Q606,607 AUDIO 10.5V AVR When Q606’ base goes Hi, AVR outputs 10.5V.
Q608~613 Pre-out mute SW When a base gose Hi, Pre-out is set to mute.
Q800,802 REF+B AVR When Q800’base goes Hi, AVR outputs 13V.
Q801 SVR6.8V Ref Supply AGC Controller When the voltage of B.U voltage falls, a return is hung and an output
is reduced.
1pin 2pin LH
L400kHz 600kHz
H650kHz 850kHz

5
KDC-W8534/W8534Y
KDC-X790
COMPONENTS DESCRIPTION
●SWITCH UNIT (X16-354x-xx)
Ref. No. Application / Function Operation / Condition / Compatibility
IC1 ROM IC Graphics data included
FLASH ROM IC
IC4 PANEL µ-COM
IC5 RESET IC When panel is attached, IC5 active
IC6 REMOTE CONTROL IC Remote control receiver
IC7 BUFFER IC It is change into 3.3V from 5V
IC8 BUFFER IC It is change into 5V from 3.3V
IC9 BUFFER IC For Control ED1
IC10 2.5V REGULATOR The power supply For 2.5V
IC11 3.3V REGULATOR The power supply For 3.3V
Q1 TRIANGLE GREEN Triangle green LED is lighting when Q1’s base level goes “H”
LED SW
Q2 TRIANGLE RED Triangle red LED is lighting when Q2’s base level goes “H”
LED SW
Q3 BLUE LED SW Blue LED are lighting when Q3’s base level goes “H”
Q4 GREEN LED SW Green LED are lighting when Q4’s base level goes “H”
Q5 RED LED SW Red LED are lighting when Q5’s base level goes “H”
Q6 SW3.3V SW SW3.3V the power supply of IC1, 3 is turned on when Q6’s base
level goes “L”
Q7,8 SW5V SW SW5V the power supply of IC2, 6 is turned on when Q8’s base
level goes “H”
Q9,10 FL3.3V SW FL+3.3V (VDD1) is turned on when Q9’s base level goes “H”
Q12 FL BLK SW ED1 is lighted on when Q7’s base level goes“H”
Q11,13 FL+B SW FL+B (VDD2) is turned on when Q11’s base level goes “H”
●CD PLAYER UNIT (X32-5730-0x)
Ref. No. Application / Function Operation / Condition / Compatibility
IC1 µ-com for mechanism control
IC2 LSI for CD signal processing +RF AMP
IC4 BTL driver SP,SL (including LO/EJ) motor and PU actuator
IC5 SW3.3V regulator 3.3V power supply for IC2, PU, and IC18 digital section
IC13 Audio active filter Secondary LPF
IC14 A5V regulator 5V power supply for DAC
IC15 Compacted audio decoding DSP AC drive decoder,MP3/WMA/AAC decoder
IC16 Compacted audio expanding SDRAM
IC17 Decoder software, unique ID storage flash ROM
IC18 Audio external 24-bit D-A converter
IC19 BU3.3V regulator 3.3V power supply for µ-com
IC20 1.8V regulator 1.8V power supply for core section of IC15
IC21 Decoder/SDRAM/Flash ROM 3.3V regulator 3.3V power supply for port section of IC15, IC16 and IC17
Q1,4 Level shift (3.3V-5V) FET

KDC-W8534/W8534Y
KDC-X790
6
COMPONENTS DESCRIPTION
Ref. No. Application / Function Operation / Condition / Compatibility
Q3,5,6 Level shift (3.3V-5V) transistor with 2 elements
Q7 Level shift (3.3V-5V) transistor
Q8 APC (Auto Power Control) transistor
Q9,10 Transistor for preceding beam delaying SW during
non-search
Q11 A5V power supply constant circuit FET
Q12,13 SW8V SW transistor
Q14,15 SDRAM 3.3V power supply SW transistor SDRAM power supply is turned off when /CSRST is “L”.
D2 UPD63712GC built-in resetting terminal static protection
diode
D3 Protection diode for pick-up laser diode
D4,D5 Diode for securing audio L-R reference voltage
D6 Diode for control terminal’s “L” confirmation for IC20
and IC21
MICROCOMPUTER’STERMINAL DESCRIPTION
●SYSTEM MICROCOMPUTER : 30625MGPA78GP/30625MWPA79GP (X34 : IC102)
Pin No. Pin Name I/O Function Processing Operation
1VREF - Analog reference voltage
2AVCC -
3LX DATA S I Data from slave unit
4LX DATA M O Data to slave unit
5LX CLK I/O LX-BUS clock
6WIRED REMO I External display remoter controller
7LX MUTE I Mute request from slave unit H : MUTE ON, L : MUTE OFF
8AUD SDA O E-VOL data SPI communication
9AUD SEL O E-VOL control SPI communication
10 AUD SCL O E-VOL clock SPI communication
10 DSP_SCL O DSP clock output terminal SPI communication
11 DAC RST O DAC reset L : DAC RESET
11 NC O Not used L-output for models without DSP
12 NC - Not used
13 BYTE - GND

7
KDC-W8534/W8534Y
KDC-X790
MICROCOMPUTER’STERMINAL DESCRIPTION
Pin No. Pin Name I/O Function Processing Operation
14 CNVSS -
15 XCIN I Clock 32,768kHz
16 XCOUT I Clock 32,768kHz
17 RESET I Reset
18 XOUT - Clock 12MHz
19 VSS - GND
20 XIN - Clock 12MHz
21 VCC1 -
22 NMI I Not used
23 PANEL DET I Panel detection H : No panel, L : Panel exists
24 RDS CLK I RDS decoder clock
24 NC O Not used L-output for models without RDS/RBDS
25 LX REQ S I Communication request from slave unit
26 PON AM I/O AM power supply control AM in operation : H, AM not in operation : HI-Z
27 LX REQ M O Communication request to slave unit
28 TUN IFC OUT I Front-end IFC out H : Station exists, L :No station
29 NC O Not used
30 RDS AFS M I/O Time constant switching when noise detected Refer toTruth Value Table r
30 NC O Not used L-output for models without RDS/RBDS
31 RDS QUAL I RDS decoder QUAL
31 NC O Not used L-output for models without RDS/RBDS
32 RDS DATA I RDS decoder DATA
32 NC O Not used L-output for models without RDS/RBDS
33 PWIC BEEP O Beep
34 TUN SCL I/O Front-end I2C clock
35 TUN SDA I/O Front-end I2C data
36 SYS DATA O Inside-panel communication data MAX 500kbps
37 VCC1 -
38 PAN DATA I Inside-panel communication data MAX 500kbps
39 VSS -
40 SYS REQ O Communication request from system µ-com
41 PAN REQ I Communication request from panel
42 SDA I/O I2C data input output
43 SCL I/O I2C clock input output
44 PON PANEL I/O Panel 5V control ON : H (Momentary power down/Panel detached)
11 Minutes after ACC OFF : Hi-Z
45 DSI I/O DSI control
46~49 NC - Not used.
50 PM MOT1 O Panel motor control 1 Refer toTruth Value Table w
51 PM MOT2 O Panel motor control 2 Refer toTruth Value Table w
52 EPM I Flash EPM
53 PM OPEN I Panel full open detection Refer toTruth Value Table e
54~56 NC - Not used

KDC-W8534/W8534Y
KDC-X790
8
MICROCOMPUTER’STERMINAL DESCRIPTION
Pin No. Pin Name I/O Function Processing Operation
57 P5V DIS I/O Panel 5V discharge control H : Discharge, Other : Hi-Z
58 PM CLOSE I Panel mechanism close detection Refer toTruth Value Table e
59 ROMCOR DET I E2PROM write request H :Write
60 PM DET I Panel mechanism detection H : Function check in progress
61 SC CON O Inside-panel communication (Chip enable when flash) POWER OFF, ACC OFF : L
62 NC - Not used
63 TUN TYPE1 I Destination setting 1 TUN TYPE1 : L, TUN TYPE2 : L
Refer to Truth Value Table t
64 TUN TYPE2 I Destination setting 2 TUN TYPE1 : L, TUN TYPE2 : L
Refer to Truth Value Table t
65,66 NC - Not used
67 CD DISC12 SW I12cm CD detection
67 NC O Not used when MD Output L fixed when MD
68 CD LOS SW I CD loading detection
68 MD_LOS_EJE_SW I MD DISC position detection terminal
69 CD MUTE R I CD mute (Rch) request L : Rch mute request
69 NC O Not used when MD Output L fixed when MD
70 CD MUTE L I CD mute (Lch) request L : Lch mute request
70 MD_MUTE I MD MUTE request terminal L : MUTE request
71 CD MRST O CD mechanism microcomputer reset L : Reset, H : Normal
71 MD_MRST O MD mechanism µ-com RST terminal H : Normal, L : RESET
72 CD MSTOP O CD mechanism microcomputer stop L : Mechanism microcomputer stop,
H : Mechanism microcomputer in operation
72 MD_MSTOP O MD mechanism µ-com stop terminal H : Mechanism µ-com in operation,
L : Mechanism µ-com stop
73 CD_DISC8_SW I CD disc detection terminal (8cm) (J only)
73 NC - Not used
74 CD LOE LIM SW I CD detection (Chucking SW) H : Loading complete, L : No disc
74 MD_LOE_LIM_SW IMD detection terminal (chucking SW) H : Loading completed, L : No disc
75 CD LOEJ I/O CD motor control Refer toTruth Value Table q
75 MD_LOEJ I/O MD motor control terminal Refer to Truth Value Table q
76 CD MOTOR O CD motor control Refer to Truth Value Table q
76 MD_MOTOR O MD motor control terminal Refer to Truth Value Table q
77 PON ILLUMI I/O Key illumination power supply control ON : H, OFF : Hi-Z
78 PON CD I/O CD/WMA power supply control At time of CD source: H, Other than CD : Hi-Z
78 PON_MD I/O MD servo power supply control terminal H :When MD mechanism in operation,
Hi-Z :When other than MD source
79 PON O Power supply control POWER ON : H, POWER OFF : L
80 PON FL+B O Fruorescent indicator tube bias power supply control POWER ON :H, POWER OFF or display black out : L
81 PON FDC I/O Fruorescent indicator tube filament power supply control POWER ON : L, POWER OFF or display black out : Hi-Z
82 F SEL1 O SW-Reg frequency switching
83 F SEL2 O SW-Reg frequency switching
84 DIAG I/O P-CON excess current surveillance

9
KDC-W8534/W8534Y
KDC-X790
MICROCOMPUTER’STERMINAL DESCRIPTION
Pin No. Pin Name I/O Function Processing Operation
85 VCC2 -
86 EXT AMP CON I/O External amplifier control
86 NC O Not used Fixed to L-output for models without EXT_AMP
87 VSS -
88~91 TYPE 1~TYPE4 IDestination switching Refer toTruth Value Table y
92 NC - Not used
93 OEM DISP DATA I/O External display DATA External display
93 NC O Not used with DISP OUT Output L fixed
94 OEM DISP CLK I/O External display CLK External display
94 NC O Not used with DISP OUT Output L fixed
95 OEM DISP CE I/O External display control request External display
95 NC O Not used with DISP OUT Output L fixed
96 NC - Not used.
97 P CON O External amplifier control POWER ON : H, POWER OFF or STANDBY : L
98 NC - Not used.
99 ANT CONT O Power antenna control TUNER ON : H
100 ILLUMI DET I Dimmer illumination detection L : ON, H : OFF
101 BU DET I Momentary power down detection BU : L, No BU or momentary power down : H
102 ACC DET I ACC power supply detection ACC ON :L, ACC OFF :H
103 (PWIC SVR) O SVR discharge circuit H : 5 seconds after POWER OFF and momentary
power down,Then : L
104 PWIC MUTE O Power IC mute L :When STANDBY source or momentary power
down, L :When TEL MUTE
105 PWIC STBY O Power IC standby control POWER ON : H, POWER OFF : L
106 LX CON O Start up request to slave unit H : SLAVE UNIT ON, L : SLAVE UNIT OFF
107 MUTE PRE R O Rch pre-out mute L :When “MUTE PRE R” is “L” or at momentary
power down, H :Only when 2-zone
107 NC O Not used when MD Output L fixed
108 CD MUTE PRE L OLch pre-out mute L :When “MUTE PRE L” is “L” or at momentary power
down, H :Only when 2-zone
108 MUTE_PRE O PRE_OUT MUTE (MD) L :When at momentary power down
109 MUTE 0 O E-VOL front mute ON : L, OFF : H
110 MUTE 1 O E-VOL rear mute ON : L, OFF : H
111 MUTE 2 O E-VOL sub mute ON : L, OFF : H
112 NC O Not used
113 DSP MUTE I/O DSP mute ON : L, OFF : Hi-Z
113 NC O Not used when without DSP Output L fixed
114 MUTE C O E-VOL AFS mute ON : L, OFF : H
114 NC O Not used (in other than when the destination is E) Output L fixed
115 DSP INIT RST O DSP initial reset L : Reset, H : Reset release
115 NC O Not used when without DSP Output L fixed
116 DSP S RST O DSP system reset L : Reset, H : Reset release
116 NC O Not used when without DSP Output L fixed

KDC-W8534/W8534Y
KDC-X790
10
MICROCOMPUTER’STERMINAL DESCRIPTION
Truth Value Table
qCD MOTOR / CD LOEJ
CD MOTOR CD LOEJ
Standby L L
Eject H H
Load H L
Brake H Hi-Z
wPANEL MOTOR
OPEN CLOSE STOP WAIT
PM MOT1 L H H L
PM MOT2 H L H L
rRDS AFS
RDS AFS M RDS AFS L Condition
AFS LOW L L No sound output with AF search
AFS MID L Hi-Z Sound output with AF search
AFS HIGH Hi-Z Hi-Z Normal reception
ePANEL MECHA
FULL OPEN FULL CLOSE OTHER
PM OPEN H L L
PM CLOSE H L H
y1 TYPE setting
Destination DSP TYPE4 TYPE3 TYPE2 TYPE1
KDC-X790 0110
KDC-MP732 0101
KDC-MP8533 0111
KDC-W8534 K1000
KDC-W8534Y K1001
Pin No. Pin Name I/O Function Processing Operation
117 DSP RQ O Request to DSP L : Request
117 NC O Not used when without DSP Output L fixed
118 DSP CS O DSP chip select L : Select
118 NC O Not used when without DSP Output L fixed
119 NC (GTEST) O Not used
120 LINE MUTE I Line mute detect TEL MUTE : 1V or less,
NAVI MUTE : 1V or less, 2.5V or more
121 MD DET I For a terminal of MD receiver
121 NC O Not used when CD Output L fixed
122 PWIC DC DET I DC offset error detect
123 LX RST O Hard reset to slave unit H : Reset, L : Normal
124 GY OUT I AnalogY gravity detect
124 NC O Not used when without G sensor Output L fixed
125 G X OUT I Analog X gravity detect
125 NC O Not used when without G sensor Output L fixed
126 RDS NOISE I FM noise detection
127 AVSS -
128 TUN SMETER I S-meter input
tTUN TYPE setting
TYPE1 TYPE2
Kenwood brand model L L
Setting for OEM1 L H
Setting for OEM2 H L
Setting for OEM3 H H

11
KDC-W8534/W8534Y
KDC-X790
MICROCOMPUTER’STERMINAL DESCRIPTION
●PANEL MICROCOMPUTER : 703134GJ013-A (X16 : IC4)
Pin No. Pin Name I/O Function Processing Operation
1~7 D14~D8 I/O Data input/output
83.3VDD - 3.3V
9VSS - Connect to GND
10~17 D7~D0 I/O Data input/output
18 FLGCP1 O FL harmony control Lighting timing (brightness harmony) is controlled
with pulse interval. GCP=FLGCP1+FLGCP2
19 NC - Not used
20 SYS REQ I System µ-com communication request H : Data communication
21 SC CON I System µ-com communication/Panel operation control H : Panel operation
22 FL BK O Fruorescent indicator blackout control H : Fruorescent indicator turned on, L : turned off
23 2.5VDD - 2.5V
24 VSS - Connect to GND
25 NC - Not used
26,27 KS1, KS2 I/O Key scan L : Output, Hi-Z : Switching
28,29 TD0, TD1 - Not used
30,31 KS3, KS4 I/O Key scan L : Output, Hi-Z : Switching
32 TRST I Pull down
33 ROTARY CCW I Rotary A 1-pulse/2-click, 15-pulse/360°
34 ROTARY CW I Rotary B 1-pulse/2-click, 15-pulse/360°
35,36 TMS, TCM - Not used
37 3.3VDD - 3.3V
38 EVSS - Connect to GND
39 KS5 I/O Key scan L : Output, Hi-Z : Switching
40~42 KR1, KR2, KR3 I Key return
43 FLGCP2 O Fruorescent indicator harmony control Lighting timing (brightness harmony) is controlled
with pulse interval. GCP=FLGCP1+FLGCP2
44 PAN REQ O Panel communication request H : Data communication in progress
45 SYS DATA I Data reception from system µ-com UART communication 500kbps
46 PAN DATA O Data transmission from panel UART communication 500kbps
47 FL CLK O Fruorescent indicator serial communication reference clock Reference clock 4.125MHz
48 KR4 INT I Key return Interruption possible
49 FL DATA1 O Fruorescent indicator serial control data
50 CLK IN3 I Serial synchronization clock Synchronized to Fruorescent indicator CLK
51 FL EL O Fruorescent indicator skip shift control H or Hi-Z : Odd number skip, L : Even number skip
52 FL DATA2 O Fruorescent indicator serial control data
53 CLK IN2 I Serial synchronization clock Synchronized to Fruorescent indicator CLK
54 FL LAT O Fruorescent indicator latch control
55 FL DATA3 O Fruorescent indicator serial control data
56 3.3VDD - 3.3V
57,58 X2,X1 I Clock 6.6MHz
59 CVSS - Connect to GND
60 CKSEL - Connect to GND

KDC-W8534/W8534Y
KDC-X790
12
Pin No. Pin Name I/O Function Processing Operation
61 PSEL - Connect to VDD
62 2.5VDD - 2.5V
63 VSS - Connect to GND
64 MODE0 - Connect to GND
65 MODE1 - Pull down
66 PAN RST I Input from reset IC
67 AVDD1 I D/A conversion reference voltage Connect to D3.3V
68,69 NC - Pull down
70,71 AVSS1,AVSS0 - D/A conversion reference GND
72 AVDD0 - A/D conversion reference voltage Connect to D3.3V
73 WAVE IN I Voice input AD read
74 F01 I BPF (63Hz) AD read
75 F02 I BPF (150Hz) AD read
76 F03 I BPF (330Hz) AD read
77 F04 I BPF (1kHz) AD read
78 F05 I BPF (3.3kHz) AD read
79 F06 I BPF (10kHz) AD read
80 NC - Pull down
81 2.5VDD - 2.5V
82 VSS - Connect to GND
83 NC - Not used
84 TYPE I Whether there is customizing or not designation setting H : Flash ROM (This model), L :Mask ROM (Other model)
85 NC (VREFCON) ONot used
86 REMO I Remote controller signal Detection with pulse width
87 PON FL+B O Fruorescent indicator bias power supply switch H : ON, L : OFF
88 PON FLVDD I/O Fruorescent indicator logic section power supply switch H : ON, Hi-Z : OFF
89 PON 5V I/O 5V power supply switch Remote controller IC / Space analyzer IC power
supply H : ON, Hi-Z : OFF
90~93 NC - Not used
94 WE I/O Memory data write permission L :Write, H :Wait SW3.3V start up : Hi-Z
95 OE I/O Memory data transmission permission L : Data transmission, H :Wait SW3.3V start up : Hi-Z
96,97 NC - Not used
98 3.3VDD - 3.3V
99 VSS - Connect to GND
100 FROMCHK - Not used
101 CE I/O Memory operation permission L : Operation, H :Wait SW3.3V start up : Hi-Z
102~104 NC - Not used
105 ROMCOR SCL - For ROM correction
106 ROMCOR SDA - For ROM correction
107 NC (SEL E2P) - Not used
108 PON TRI GREEN I/O Triangle green light ON switch H : Light ON, Hi-Z : Light OFF, When blackout : Light ON
109 PON TRI RED I/O Triangle red light ON switch H : Light ON, Hi-Z : Light OFF
110 PON BLUE I/O Blue sub-illumination light ON switch H : Light ON, Hi-Z : Light OFF
MICROCOMPUTER’STERMINAL DESCRIPTION

13
KDC-W8534/W8534Y
KDC-X790
Pin No. Pin Name I/O Function Processing Operation
111 SA RST O Spectrum analyzer IC reset H : Reset (1.8V or higher), L : Normal
112 3.3VDD - 3.3V
113 EVSS - Connect to GND
114 PON GREEN I/O Green key illumination light ON switch H : Light ON, Hi-Z : Light OFF
115 PON RED I/O Red illumination light ON switch H : Light ON, Hi-Z : Light OFF
116 PON SW3V I/O Rotary encoder power supply L : ON, Hi-Z : OFF
117 NC O Not used
118~123 A21~A16 O Address output
124 2.5VDD - 2.5V
125 VSS - Connect to GND
126~133 A15~A8 O Address output
134 3.3VDD - 3.3V
135 EVSS - Connect to GND
136~142 A7~A1 O Address output
143 NC - Not used
144 D15 I/O Data input/output
●MECHANISM MICROCOMPUTER : 91CU27UG5UR8 (X32-573 : IC1)
Pin No. Pin Name I/O Application Processing Operation Description
1VREFL I ADC reference power supply input terminal (L) GND
2DMUTE O Driver MUTE L : STOP, H : MUTE OFF
3CSRST O (Decoder) Resetting control L : RESET, H : NORMAL
4NCONot used. Open output L-fixed
5LZM I 0bit MUTE detection (Lch) L : MUTE OFF, H : MUTE ON
6RZM I 0bit MUTE detection (Rch) L : MUTE OFF, H : MUTE ON
7BREQ I (Decoder) BREQ signal input
8DSPINT I (DSP) interruption signal input H :Interruption
9SREQ O (Decoder) SREQ signal output
10 NC O Not used. Open output L-fixed
11 S_DATA O (Decoder) Data output for serial data
12 B_DATA I (Decoder) Data input for serial data
13 CLK O (Decoder) Clock output for serial data
14 DSPTXD1 O (DSP) Data output for serial data
15 DSPRXD1 I (DSP) Data input for serial data
16 DSPSCLK1 O (DSP) Clock output for serial data
17 AM0 - ROM mode selection terminal H : NORMAL, L : External ROM mode
18 DVCC - BU3.3V
19 X2 O Oscillator connection 26.88MHz
20 DVSS - GND
21 X1 I Oscillator connection 26.88MHz
22 AM1 - H-fixed
23 RESET I Reset detection L : RESET H : NORMAL
MICROCOMPUTER’STERMINAL DESCRIPTION

KDC-W8534/W8534Y
KDC-X790
14
Pin No. Pin Name I/O Application Processing Operation Description
24,25 NC O Not used. Open output L-fixed
26 NMI I Non-maskable interruption Not used.
27 ALE O Not used. Open output prohibited (Hi-Z)
28 DSPSTB O (DSP) Data strobe signal output
29 DSPA0 O (DSP) Command parameter identification signal output H :Transmitting parameter, L :Transmitting command
30 DSPRST O (DSP) Reset control
31 NC O Not used. Open output L-fixed
32 NC O Not used. Open output L-fixed
33 SEARCH O Search condition output H : In search, L : Normal (x2 :L-fixed)
34 LOE/LIM_SW I PU LIM detection SW H : LIM
35~39 NC O Not used. Open output L-fixed
40 POND3.3 O D3.3V POWER ON control terminal H : POWER ON
41 NC O Not used. Open output L-fixed
42 PONCS O CS7410-series power supply control terminal H:POWER ON
43~47 NC O Not used. Open output L-fixed
48 DATA_MUTE O Data output status L : DATA output MUTE
49 NC O Not used. Open output L-fixed
50 NC (BOOT) O Mask : Not used. (output H) / Flash (write terminal) (Flash) L :WRITE, H : NORMAL
51~53 NC O Not used. Open output L-fixed
54 MUTE L O Lch audio MUTE control L : MUTE ON
55 MUTE R O Rch audio MUTE control L : MUTE ON
56 NC O Not used. Open output L-fixed
57 SDA I/O (System µ-com) I2C data
58 SCL I/O (System µ-com) I2C clock
59 MSTOP I Standby restart interruption L:STOP H:STOP release
60~62 AN0~AN2 I TEST0~TEST2 PULL DOWN
63 UNQID I Unique ID write permission L : Normal, H : During service write
64 AVCC - ADC power supply terminal BU3.3V
MICROCOMPUTER’STERMINAL DESCRIPTION

15
KDC-W8534/W8534Y
KDC-X790
TEST MODE
●How to enter the test mode
In order to enter the test mode, reset the unit while simulta-
neously pressing down [1] and [3] keys.
(While “----” is being displayed, power can be ON for 30 min-
utes.)
●How to clear the test mode
The test mode is cleared in case of any of the following events:
resetting, momentary power down, Acc OFF, Power OFF and
removal of the panel.
●Initial conditions of the test mode
• Source is STANDBY.
• Displays lights are all turned on.
• The volume is at –10dB (The display is 30).
• Loudness (LOUD) is OFF.
• CRSC is OFF, regardless of whether there are switching
functions or not.
• SYSTEM Q is NATURAL (=FLAT).
• BEEP will sound anytime with a less than 1 second push.
• Auxiliary (AUX) is ON.
• DISPLAY TYPE is TYPE D.
• The Multi-function Key System are source dependent sys-
tems. (TUNER →Preset, CD / CD-CH →Scan, etc.)
• Display ofTUNER sources will be as follows :
European Models : Upper Display=PS/frequency, Middle
Display=spectrum analyzer, Lower Display=multi-function
Other Models :Upper Display=SNPS, Middle Display =spec-
trum analyzer, Lower Display=multi-function
• CD source display will be as follows :
All Models :Upper Display=P-TIME, Middle Display= spec-
trum analyzer, Lower Display=multi-function
●RDS automatic measurement
Conventionally, the PS display has been visually checked on
the production line. This will be replaced by a new processing.
The PS data will be received and the PS contents is to be
verified as “RDS_TEST”. When this is verified, the P-CON
terminal is forced to go OFF. (In this case, “ _ ” means blank.)
→This will be a dedicated test mode processing.
On the P-CON, when power is turned off once and, then,
turned on again, (Power OFF →ON) the unit will be re-
started.
●Special display when set toTUNER
When inTUNER mode, if any of the following displays appear,
there is an abnormality with the front end.
• “TNE2P_NG” : Front-end E2PROM values are still default
(not determined).
•“TNCON_NG” : In this condition, the communication with
the front-end is not possible.
●Forced switching of K3I
In TUNER FM mode, each time [6] key is pressed, the func-
tions move in the following cycle :
AUTO →forced WIDE →forced MIDDLE →force NARROW
→AUTO
The initial condition is AUTO and the displays below will ap-
pear.
• AUTO : FMA
• Forced MIDDLE :FMM
• Forced WIDE : FMW
• Forced NARROW : FMN
●CD receiver test mode specifications
•Jumps are made to the following tracks by pressing the
[] key.
∗KDC-W8534/W8534Y
No.9 →No.15 →No.10 →No.11 →No.12 →No.13 →
No. 22 →No. 14 →No. 9 →No. 11 → No. 9 (Returns to
the beginning)
∗KDC-X790/MP732/MP8533
No.9 →No.15 →No.10 →No.11 →No.12 →No.13 →
No.22 →No.14 →No.9 (Returns to the beginning)
It must be noted, however, that when paying MP3 / WMA /
AAC disk, which contain 8 files or less, the first track and
the following tracks are played in order.
• When [ ] key is pressed, it goes down by 1 track.
• When a CD is used as a source, by pressing [1] key for less
than 1 second, a jump to the Track No. 28 is made.
• When a CD is used as a source, by pressing [2] key for less
than 1 second, a jump to the Track No. 14 is made.
• When a CD is used as a source, by pressing [3] key for less
than 1 second, a display of CD mechanism model name
and its version is made.When the pressing of [3] key for
less than 1 second is made for the second time, the normal
display is resumed.(Time code display)
• While in CD source, use [5] key to switch between DSP
Through and DSP Bypass.(In models with DSP)
The multi-function key
5
indicates Through, and
5
in-
dicates Bypass.
• When a CD is used as a source, by pressing [6] key for less
than 1 second, a jump to the Track No. 15 is made. At the
same time, the volume value is set to 27 (5V PRE).

KDC-W8534/W8534Y
KDC-X790
16
TEST MODE
●Audio adjust mode
Model with DSP (KDC-W8534/W8534Y)
•By pressing [AUD] key for less than 1 second, the Audio
Adjust mode is entered.
• As with the [AUD] key, [∗] key on the remote controller can
be used to enter the Audio Adjust mode.
• As for the adjustment items, items for both the AUDIO
FUNCTION MODE and SETUP MODE are included.
• By pressing [AUD] or [FM] key briefly, switch the item to be
adjusted in the following order. (only in forward rotation)
• The initial item will be Fader and the next is Balance. (After
Balance, it will be arbitrary.)
• With the remote controller, continuous forwarding is pro-
hibited.
• Using theVOL knob and [ ] / [ ] key, the Fader is to be
adjusted to the following 3 levels : R15 ↔0 ↔F15 (The
default value :0)
• Using the VOL knob and [ ] / [ ] key, the Balance is to
be adjusted to the following 3 levels :L15 ↔0 ↔R15 (The
default value :0)
• Using the VOL knob and [ ] / [ ] key, the Volume Off-
set is to be adjusted to the following 2 levels : –8 ↔0 (The
default value :0)
Model with no DSP (KDC-X790/MP732/MP8533)
• By pressing [AUD] key for less than 1 second, the audio
adjustment mode can be entered.
• Using the remote controller [∗] key and [AUD] key, the au-
dio adjustment mode can be entered.
•Adjustment items of both the AUDIO FUNCTION MODE
and SETUP MODE are included.
• By pressing [AUD] or [FM] key briefly, switch the item to be
adjusted in the following order. (only in forward rotation)
• The initial item will be Fader, which is followed by :Balance
→Bass Level →Middle Level →Treble Level →HPF Front
→HPF Rear →LPF Sub Woofer (After this, it will be arbi-
trary)
• With the remote controller, continuous forwarding is pro-
hibited.
• Using the VOL knob and [ ] / [ ] key, the Fader can be
adjusted in 3 steps :R15 ↔0 ↔F15 (The initial value is 0)
• Using the VOL knob and [ ] / [ ] key, the Balance can
be adjusted in 3 steps :L15 ↔0 ↔R15 (The initial value is
0)
• Using theVOL knob and [ ] / [ ] key, the Bass / Middle
/ Treble Level can be adjusted in 3 steps : –8 ↔0 ↔+8
(The initial value is 0)
• Using the VOL knob and [ ] / [ ] key, the Sub Woofer
Level can be adjusted in 3 steps : –15 ↔0 ↔+15 (The
initial value is 0)
• Using the VOL knob and [ ] / [ ] key, the Volume Off-
set can be adjusted in 2 steps :–8 ↔0 (The initial value is
0)
• Using the VOL knob and [ ] / [ ] key, the HPF Front /
Rear can be adjusted in 2 steps : Through ↔180Hz (or
220Hz) (The initial value isThrough)
• Using the VOL knob and [ ] / [ ] key, the LPF Sub
Woofer can be adjusted in 2 steps : 60Hz (or 50Hz) ↔
Through (The initial value is Through)
• Using the VOL knob and [ ] / [ ] key, the Volume Off-
set can be adjusted in 2 steps : –8 ↔0 (The initial value is
0)
• Using the VOL knob and [ ] / [ ] key, the Loudness
ON/OFF can be adjusted in 2 steps : OFF ↔ON (The
initial value is OFF)
• Using the VOL knob and [ ] / [ ] key, 2-Zone ON/OFF
can be adjusted in 2 steps :OFF ↔ON (The initial value is
OFF)
• Bass f / Bass Q / Bass EXT / Middle f / Middle Q / Treble f
do no appear in audio adjustments.
●MENU items
• Push the [ ] (NEXT) key for at least 1 second to enter the
MENU.
• The [DNPP/SBF] and [DIRECT] keys on the remote con-
troller can also be used to enter the MENU.
• With the remote controller, continuous forwarding is pro-
hibited.
• When a CD is used as a source, the default item will be the
ACD F/W Version.
(DXM-6800 mechanism equipped model : KDC-W8534/
W8534Y, KDC-X790)
●2-ZONE (Dual Zone) items
• When using sources other than the STANDBY source, us-
ing a short-press on [AUTO] or [TI] key, 2-ZONE ON/OFF
is achieved.
●Backup current measurement
When reset in Acc OFF (Back Up ON) condition, MUTE termi-
nal goes off after 2 seconds, instead of 15 seconds. (During
this time, the CD mechanism does not function.)

17
KDC-W8534/W8534Y
KDC-X790
TEST MODE
●OPEL communication items
During the test mode, OPEL communication line outputs the
following (At every 500msec, the output condition of the com-
munication line will be switched.)
●G sensor display items
When source is STANDBY, by short-pressing [ATT] key, the
display is switched to analogy meter display, in which vertical
G and horizontal G are displayed.
●Special display when all lights are on
When all lights are on with the STANDBY source, the follow-
ing displays are made when the keys shown below are pressed.
[1] key Version display
(Display) C0507WE__SYS1. 23
(Display) STYPE : x__PAN1.11
(Display) PTYPE : x__MEM3.21
∗STYPE indicates system µ-com destination,and PTYPE
indicates panel µ-com destination, and show real-time
condition of the destination terminal (“x” is displayed in
hexadecimals.)
[2] key Serial number display (8 digits)
(Display) SNo_XXXXXXXX
[3] key Key pressed briefly : Power ON time is displayed.
During Power On time display, by pressing for at least 2
seconds, the Power ON time is cleared.
(Display) PonTim_0Hxx_ (00~50 is displayed for “xx”.
When less than 1 hour, displayed
by increments of 10 minutes.)
xxxxx (00001~10922 is displayed for
“xxxxxx”.) MAX 10922 (times)
[4] key
Key pressed briefly : CD operation time is displayed.
During CD operation time display, by pressing for at least
2 seconds, CD operation time is cleared.
(Display) CDTim_0Hxx_ (00~50 is displayed for “xx”.
When less than 1 hour, displayed
by increments of 10 minutes.)
xxxxx (00001~10922 is displayed for
“xxxxxx”.) MAX 10922 (times)
[5] key
Key pressed briefly : CD EJECT number is displayed.
During CD EJECT number display, by pressing for at
least 2 seconds, CD EJECT number display is cleared.
(Display) EjeCnt_xxxxx MAX 65535 (times)
[6] key
Key pressed briefly : PANEL Open/close number is
displayed. (*1)
During PANEL Open/close number display, by pressing
for at least 2 seconds, PANEL Open/close numbers is
cleared.
(Display) PnCnt_xxxxx MAX 65535 (times)
[FM] ROM correction version display
key (Display) SYS_ROM_R123
(Display) PAN_ROM_R123
When E2PROM is not installed :ROM_ERR_
When un-written : ROM_R – – –
When data is incompatible :ROM_R ∗ ∗ ∗
[]AUDIO data default value setting
key (Display) AUDIO_INIT
[ ] Key pressed briefly : Forced Power OFF data displayed.
key While the forced power OFF data is displayed, press and
hold for 2 seconds to clear the data.
(Display)POFF_ - - - (No Forced Power OFF)
SEC (Forced Power OFF because of
missing Security Code)
PNL (Forced Power OFF because of
system µ-com panel communication
error)
[]Key pressed briefly : CD information display mode ON/OFF
key While in CD information display mode, press and hold for
2 seconds to clear all CD information.
∗Please refer to the table below.
(*1) : 1 count is made when the panel opens to full or when a disc is
loaded.
CE
DATA
CLK
500msec 500msec 500msec

KDC-W8534/W8534Y
KDC-X790
18
TEST MODE
Displays I2C communication status and CD mechanism
error log
(Display) I2C_●●____________
(Display) ERR_1-▲▲, 2-▲▲, 3-▲▲
“OK” or “NG” is displayed for “●●”. / “--” or an error code
is displayed for “▲▲”.
Displays CD loading error data.
(Display) Load_Error____
(Display) __ (1) xx__ (2) xx (number of times is displayed
for “xx”)
MAX 99 (times)
Disk detection switch ON/OFF is monitored, and when
the loading operation is not completed within the specified
time length, or when E-99 mechanism error occurred,
record which SW signal had an error.
∗Refer to the note at the end of [CD LOAD error detection].
[AM] Displays CD ejection error data.
key (Display) Eject_Error___
↑(Display) __ (1) xx__ (2) xx
(Display) __ (3) xx__ (4) xx (number of times is displayed
for “xx”)
MAX 99 (times)
Disk detection SW ON/OFF is monitored, and when the
ejection operation is not completed within the specified
time length, or when E-99 mechanism error occurred,
↓record which SW signal had an error.
[FM] ∗Refer to [CD EJECT error detection]’s note.
key Displays CD time code count error data (missing count).
(Display) Count_Lose
(Display) __CDDA_ : xx
(Display) __CDROM : xx (number of times is displayed
for “xx”)
MAX 99 (times)
Monitor time code continuity. Record the number of times
when discontinuity occurred as error data.
Record the data of compressed audio and CD-DA played
separately.
Displays CD time code count error data (count not updated).
(Display) Count_Stay
(Display) __CDDA_ : xx
(Display) __CDROM : xx (number of times is displayed
for “xx”)
MAX 99 (times)
When the time code is not renewed for 2 or more seconds,
record the number of times occurred as error data
(skipped sound).
●Initializing AUDIO-related value setting
During STANDBY sourcing, by pressing [ ] key for less than
1 second, AUDIO setting values are returned to the default
values.
●Flash ROM check (for graphic data)
1. In order to prevent the Flash ROM (4M) equipped models
to be installed with the Mask ROM (2M) panel, and to pre-
vent the Mask ROM (2M) equipped models to be installed
with the Flash ROM (4M) panels, with the STANDBY
sources during the test mode, the following display will be
made according to the system µ-com and panel combina-
tion.
•
Flash ROM (4M) equipped model and Flash ROM (4M) panel
All lights turned on – – – OK!
•
Mask ROM (2M) equipped model and Mask ROM (2M) panel
All lights turned on – – – OK!
•
Flash ROM (4M) equipped model and Mask ROM (2M) panel
“M4P2” – – – NG!
•
Mask ROM (2M) equipped model and Flash ROM (4M) panel
“M2P4” – – – NG!
∗Flash ROM (4M) :KDC-W8534/W8534Y,KDC-X790 (X16
IC1)
Mask ROM (2M) : KDC-MP732,KDC-MP8533 (X16 IC1)
2. When entering the test mode, the manufacture code of the
Flash ROM (4M) is read and when it is normal, FROMCHK
of the 100th terminal (Panel µ-com) repeats Hi →Low →
Hi · · ·. If the reading is abnormal, “Low” is output.
If the manufacture code is normal, by pressing [AM] key for
less than 1 second, the connection checks on all terminal
is started. If the connections are normal, the FROMCHK
terminal stops the Hi →Low →Hi · · · repeating and out-
puts “Hi”. If the reading is abnormal, “Low” is output.
3. If the [AM] key is pressed for 2 seconds while all lights are
on, Flash ROM (4M) data is initialized.
While the deletion is executed,“Data_Erase....”is displayed.
Note : Do not touch any key white this is in progress.
When erasing is complete, “Erase_OK!!” is displayed.
If“Erase_NG!!!!!!” is displayed, it was not possible to erase
the data on the Flash ROM (4M).
In this case, pressing [AM] key for at least 1 second again.
If it is the same, then there is an abnormality with the Flash
ROM.

19
KDC-W8534/W8534Y
KDC-X790
TEST MODE
●Other
• At Power ON, “CODE_OFF”, “CODE_ON” displays will not
be made.
• When sourcing STANDBY, by pressing [AUTO] or [TI] key
for less than 1 second, GREEN/RED of the key illumination
is switched.
When doing this, the triangle illumination GREEN/RED is
switched along with the key illumination.
• When staring up in the test mode, LINE MUTE prohibition
time is set to 1 second instead of 10 seconds.
• While in the test mode, even when a DC offset error is de-
tected, the detection information will not be written to the
E2PROM.
• While in the test mode, even after an elapse of pre-set time,
the backup memory items will not be written to the E2PROM.
• Information Clear mode for Test Mode, backup/installer
memory, and CD mechanism error log.
In the DC offset error detection information clear mode,
DEMO mode operation will not be conducted.
Also, in the above mode, the menu of the STANDBY source
will not display DEMO ON/OFF switching items.
• While in the test mode, and at the same time, PM_DET of
the 60th terminal (System µ-com) is H, the following will
apply to the EJECT key, regardless of whether a disc is in
the unit or not.
Panel full OPEN/CLOSE is conducted with a push for less
than 1 second. (Protection time : 3 seconds)
As far as this item is concerned, eject will be achieved by
for at least 1 second push on the EJECT key.
●Clearing backup/installer memory and CD mecha-
nism information, and service information. Clear-
ing E2PROM data.
Backup/installer memory X34-IC104 (E2PROM)“AUDIO_E2P”
CD mechanism information and service information:TUNER
F/E (E2PROM) “CD_E2P___”
1. While pressing and holding the [ ] (NEXT) key and the
[ATT] key, reset-start to start backup/installer, memory data,
and CD mechanism and service information initialization.
(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 number of times panel was opened/closed.
•Displays forced Power OFF data.
2. After the initialization process is completed, the following is
displayed.
When the initialization is completed normally, the following
is displayed.
When there was an error (or errors) and the initialization is
not completed normally, the following is displayed.
When backup/installer memory initialization is NG.
When CD mechanism information / service information ini-
tialization NG.
When all initialization NG.
Restore the NGs and initialize again.
3. While in this mode, even after an elapse of a pre-set time,
no backup memory items will be written to the E2PROM.
4. This mode is released by resetting.(What was on the last
screen will not be retained.)
●Clearing DC offset error detection information
(E2PROM (F/E) data clear)
1. While simultaneously pressing down on [3] and [6] keys,
reset the unit to enter the DC offset error display mode.
(While “----” is being displayed, power can be ON for 30
minutes.)
2. During STANDBY sourcing, the current DC offset error con-
ditions will be displayed.
When error detected :“DC_ERR”
When error not detected :“DC_OK”
3. While the error conditions are being displayed, press [AUTO]
C D _ E 2 P _ _ _ :
A U D I O _ E 2 P :
C D _ E 2 P _ _ _ :
A U D I O _ E 2 P :
C D _ E 2 P _ _ _ :
A U D I O _ E 2 P :
C D _ E 2 P _ _ _ :
A U D I O _ E 2 P :

KDC-W8534/W8534Y
KDC-X790
20
TEST MODE
key for less than 1 second to clear the detection informa-
tion. (E2PROM clear)
4. DC offset error display mode is released by resetting.(What
was on the last screen will not be retained.)
●FM/AM channel space switching (KDC-X790)
From the Power OFF condition, while pressing [1] and [5] keys
down simultaneously, press the [SRC] key and turn power ON.
●Security
• Forced Power ON mode
While “– – – –” is being displayed, by resetting while pressing
[] (NEXT) key and [4] key simultaneously, it is possible to
turn the power ON for 30 minutes only.
• Method of clearing the programmable security
code (KDC-X790)
1. While “– – – –” is being displayed, press [ ] key for at
least 3 seconds while pressing [AUTO] key.
This makes “– – – –” display disappear.
2. Using the remote controller, input “KCAR”.
Press the remote control [5] key 2 times, display “K”, and
press the [ ] key.
Press the remote control [2] key 3 times, display “C”, and
press the [ ] key.
Press the remote control [2] key once, display “A”, and press
the [ ] key.
Press the remote control [7] key 2 times, display “R”, and
press the [ ] key.
3. The security is released and the unit enters the STANDBY
mode.
4. If a wrong code is input, the unit goes into the Code Re-
quest mode.
• How to register the security code on the“Car Au-
dio Passport” after replacement of the E2PROM
(F/E) (KDC-W8534/W8534Y)
1. Enter the test mode.(Refer to the section on“How to Enter
the Test Mode.”)
2. Enter the MENU by long pressing [ ] (NEXT) key for one
second.
While “Security” is being displayed, press [ ] key for at
least 1 second and enter the security registration mode.
3. Using [FM] / [AM] / [ ] / [ ] keys, enter the code.
[FM] key : Number up / [AM] key : Number down
[ ] key :Cursor Right / [ ] key : Cursor Left
4. Press [ ] key for at least 3 seconds to display “RE-EN-
TER”.Then, re-enter the code using the method in above
No.“3”.
5. Press [ ] key for at least 3 seconds to display “AP-
PROVED”.
6. Release the test mode. (Refer to the section on “How to
Release the Test Mode.”)
Note : The security code for this model cannot be deleted by
“all clear” command.
DC OFFSET ERROR
●Purpose
Prevent customers’vehicle speakers damages, burnouts, and
smoking.
Avoid the connected speakers to be burned out, damaged, or
to smoke when DC occurs between the audio power amp. +
and - outputs.
●Processing after detection
1. System status
• At the detection of DC error, error data is to be saved im-
mediately (E2PROM error log save area).
• Display the error message on the display.The system shall
maintain the current condition, including the operation.Shut
down audio system power supply. Set Mute to ON.
• Although switching between Power OFF and ON (ACC, BU,
and Key operation) is valid, switching from Off to ON shall
be error until the µ-com is reset.
∗ While power-on, even if the IC2VI DCErr output terminal
logic recovered to normal level value, the error condition
shall continue.
• Prohibit to save the backup/installer memory to E2PROM
(nonvolatile memory).
2. Controlling µ-com terminal
• Set Mute for all channels including for pre-out.
• Turn off power IC control system power supply. (Set AMP-
Standby function to valid)
• Set P-Con output to OFF (Logic by which external AMP
unit is turned off).