Kenwood KDC-W9537U User manual

This product uses Lead Free solder.
This product complies with the RoHS directive for the European market.
CD RECEIVER
KDC-W9537U/W9537UY
KDC-X9006U/X991
© 2007-6 PRINTED IN JAPAN
B53-0551-00 (N)521
SERVICE MANUAL
WOW
HD
KDC-X9006U
KDC-X9006U
(M type)
KDC-W9537U
KDC-W9537UY
(E type) WOW
HD
KDC-W9537U
/PTY
KDC-X991
(K type)
WOW
HD
KDC-X991
PTY/C.S.
SIZE AA BATTERY
(Not supplied)
Panel assy
(A64-4091-02)
MODEL TDF PANEL No. TDF NAME
KDC-W9537U/W9537UY Y33-2790-62 TDF-W9537U
KDC-X991 Y33-2790-60 TDF-79DX
KDC-X9006U Y33-2790-61 TDF-X9006U
CD MECHANISM EXTENSIONCORD (24P) : W05-0934-00
DC cord (K,M type)
(E30-6408-05)
DC cord (E type)
(E30-6412-05)
Escutcheon
(B07-3125-01)
Mounting hardware assy
(J21-9716-03)
Remote controller assy
(A70-2085-05)
Lever
(D10-4589-04) x2
Carrying case
(W01-1664-05): K type
(W01-1692-05): E type
Compact disc
(W01-1704-05)
Screw set (K,M type)
(N99-1758-05)
Tapping screw
(N09-6280-05)
Panel assy
(A64-4090-02)
RC-547
Panel assy
(A64-4092-02)
Plastic cabinet assy (M type)
(A02-2732-03)
Ferrite core (E type)
(L92-0638-05)
TDF SPARE-PANEL

2
KDC-W9537U/W9537UY
KDC-X9006U/X991
BLOCK DIAGRAM
(X16-398)
(X92-587) (X34-482)
AM+B
F/E
LX BUS
SW5V
A8V
A8V
AGC
E-VOL
A3.3V
REF+B
ACGND
9V
PRE OUT
PRE OUT
PRE OUT
AUX IN
IC450
IC480
IC500
IC340
DSI
BU5V
UP
BACK
BU5V
u-COM
P-CON
ANT-CON
EXT AMP
ACC DET
DIMMER
SURGE DET
B.U DET
Q20
BU5V
SW20V
Q50
ILL+B
SW 14V
A8V
Q11
IC350
Q30
SERVO
Q34
SW5V
Q22
P CON
ANT CON
EXT.AMP.CON
DIMMER
ACC
BACK UP
LINE
SP OUT(FR)
SP OUT(RL)
SP OUT(FL)
SP OUT(RR)
REMO
3.3V
IC11
2.5V
IC10
SW
IC4
IC2
IC6
ANA.
SPE.
BU5V
SW5V
SERVO
A8V
9V
ILL+B
(SW)
(FRONT)
(REAR)
WIRED
Q10
TEL MUTE
3.3V
IC5
(FST)
USB5V USB
D3.3V
USB
BU5V
CLOSE
OPEN/
MECHA
PANEL
DRIVER
MOTOR (5VPRE)
DC/DC
MEMO
INSTALLER
ROM CORR
RDS
DECODER
IC
RESET
E2PROM
ROMCOR
u-COM
IR
REMO
PANEL
5V
MOTOR
+B
MUTE
PRE
IC
POWER
CONNECTOR
5P
DRIVER
MUTE
PANEL3.3V
NOR FLASH
SD RAM
SOC
D1.8V
IC716
IC711
IC703
DIR
CD
SERVO
D3.3V
G-ANA
A8V
B.U5V
NAND FLASH
AUTHENTI-
CATION IC
LEVEL
iPod
SHIFT
SHIFT
LEVEL
IC702
OP
AMPMUTE
SW
A5VD5V
DAC
8ch LPF
A4V
ADC
DSP
IC831IC830
DSP3.3V
IC860-
862
RIPPLE
DRIVE
COMP
PANEL
DET
BACKUP
PANEL
(1/2)
DSP3.3V
HISIDE SW
DSP3.3V
D3.3V
(2/2)
D5V
OEL 8V
SRAM FLASHROMOEL MODULE
RESETLEVEL LEVEL
256x64PIX. 4096COLOR (16x64kBIT) (16x8MBIT)
SHIFTSHIFT IC
ANA.
SPE.
ANA.
SPE.
(6BAND)
SW
SW
IC7
SWSW
RESET
KEYS ROTARY
JOG &
ROTARY
KEY ILL
BLUE
SUB ILL
BLUE
IC8
(MINI PIN)
Q40
E2PROM
FST
FM/AM
AUX
CH
CD
MUTE C
MUTE 0,1,2
WININ
OFFDET
MUTE C
STBY
RST
DCERR
PRE MUTE
MUTE 0,1,2
MUTE A
MUTE A
MPX for RDS
USB I/F
for SOC
ROM
I2C BUS
RESET
PAN 3.3VDET
PON 3.3V
PON OEL
3.3V SYSTEM
5V SYSTEM
A1-A23 D0-D15,
KEY SCAN
A/D 7ch
KEY IN
P-ON 5V
CW,CCW
ILL CONT.

3
KDC-W9537U/W9537UY
KDC-X9006U/X991
BLOCK DIAGRAM
DPU1
CD PLAYER UNIT (X32-598x-xx)
BOARD (X34- )
MOTHER
EF
A
C
B
TR COIL
FO COIL
APC
IC1
16.93MHz
CLOCK
IC6
8V SW
3.3V REG
IC3
LOADING &
RF AMP
SERVO
PROCESSOR
MOTOR
DRIVER
MOTOR
SPINDLE
3.3V REG
IC2
S2
S4
S1
S3
+
+
ONLY
SLED
MOTOR
DM1
DM2
Q1
X2
Q7
PROCESSOR
MICRO
1 CHIP IC
LEVEL SHIFT
LEVEL SHIFT
LEVEL SHIFT
Q3
Q3
Q4
(0-00),(0-01) ONLY
SW
Q2
SW
Q8,9
3.3V SW
Q6
SW (0-01),(0-03)
ONLY
(0-00),(0-01)
X1 or
VREF
D.GND
BU5V
8EJE-SW
12EJE-SW
LOS-SW
LOE/LIM-SW
D.GND
MOTOR
LO/EJ
S.GND
D.GND
D.GND
S.GND
A.GND
AS8V
R-ch
L-ch
S.GND
DMUTE
A,B,C,E,F
VREF
TR OUT
FO OUT
DM OUT
FM OUT
TVD,SPL
FOD,TRD,
DATA
CLK
MSTOP
RST
MUTE
MUTE
CLK
DATA
MSTOP
MRST
D.GND
S7V
AVDD
REGVDD
P-ON1
IOVDD

4
KDC-W9537U/W9537UY
KDC-X9006U/X991
COMPONENTS DESCRIPTION
●SWITCH UNIT (X16-3980-10)
Ref. No. Application / Function Operation / Condition / Compatibility
IC1 FLASH ROM Storage of graphics data and customized display data.
IC2 SPECTRUM ANALYZER IC 6ch band pass filter.
IC4 PANEL µ-COM Control in panel.
Power management, OEL control, LED control, Key matrix, etc.
IC5 RESET IC When PAN5V is 3.7V or less, IC5 outputs “L” (panel µ-com reset).
IC6 REMOTE CONTROL IC Remote control receiver.
IC7 LEVEL SHIFT Level shift from 5V to 3.3V.
IC8 LEVEL SHIFT Level shift from 3.3V to 5V.
IC9 INVERTER IC Inverter of input and output.
IC10 2.5V AVR When PAN5V is supplied, IC10 provides 2.5V power supply for panel µ-com.
IC11 3.3V AVR When PAN5V is supplied, IC10 provides 3.3V power supply for panel µ-com.
IC12 SRAM Buffer of program.
Q3 SUB-ILL LED SW When base of Q3 is “H”, sub-illumination shines.
Q4 BLUE LED SW When base of Q4 is “H”, blue LED shines.
Q6,9 OEL8V SW When base of Q9 is “H”, OEL8V is supplied for OEL.
Q7,8 PAN5V SW When base of Q8 is “H”, PAN5V is supplied for IC2 & IC6.
Q16,17 PAN3.3V SW When base of Q8 is “H”, PAN3.3V is supplied for IC1, IC3 & IC6.
●ELECTRIC UNIT (X34-482x-xx)
Ref. No. Application / Function Operation / Condition / Compatibility
IC10 Audio8V Ref. Power Supply Output 1.27V
IC80 Panel & USB/Digital AVR
(Dual Channel)
Switching Regulator.
CH1 : Panel (5.1V), CH2 : USB_VBUS, SoC, DSP etc. (5.1V)
IC83 Panel 3.3V AVR Series Regulator. (4.4V to 3.3V)
IC100 Audio Ref. Supply Decides Audio Ref. Voltage.
CH1 : Electrical Volume “REF3.3V”. (3.3V), CH2 : Power IC “ACGND”. (4.2V)
IC101 Audio Ref. Supply Decides Audio Ref. Voltage. Power IC “Ripple”. (6.9V)
IC140 Power Control Switch P.CONT/ANT.CONT power control switch with over current detection and protection.
IC300 Power Control Switch USB power control switch with over current detection and protection.
IC310 Dual Axis Accelerometer Detect acceleration and control output voltage.
IC320 Buffer Amp & AGC Buffer and auto gain control for spectrum analyzer.
IC340 RDS/RBDS decoder
IC350 5VPreout Amp “-AVR” -9.8Vout Change-pump.
IC361 5VPreout Amp “SW L/R” Output buffer and gain control.
IC362 5VPreout Amp “FL/RL” Output buffer and gain control.
IC363 5VPreout Amp “FR/RR” Output buffer and gain control.
IC450 Power IC Amplifies front L/R and rear L/R to 50W maximum.

5
KDC-W9537U/W9537UY
KDC-X9006U/X991
COMPONENTS DESCRIPTION
Ref. No. Application / Function Operation / Condition / Compatibility
IC480 Source Selector & Electrical Volume
Select analog source & Full source volume.
* Analog source: AM/FM, Changer, AUX. Digital source is selected by SoC. (CD, USB,
Internal memory)
Speaker out “DC-Offset” detection and protection.
(This function consists of “IC450” and “IC480”.)
IC500 System µ-com System control
Power management. Panel control. AM/FM, Changer, SoC control. External control & etc.
IC510 System µ-com Reset Control Output “L” (System µ-com Reset), when detection voltage goes below 3.6V or less.
IC520 Installer’s memory
IC530 MUTE Logic Controls logic for muting.
IC600 Panel mecha motor driver
Panel mecha control.
IN1, IN2: Panel mecha action
L, L : Wait L, H : Open H, L : Close H, H : Stop
IC650 Audio Ref. Supply Decides Audio Ref. Voltage. (4V)
Electrical Volume “PREF”. DAC out L.P.F.
IC700 Internal Memory NAND Flash Memory 512MByte.
IC701 DSP 3.3V AVR Series Regulator. (4.4V to 3.3V)
IC702 iPod authentication IC Issues key code for control iPod.
IC703 DIR Audio data converter S/PDIF to I2S. (From CD Mecha)
IC705 DAC A5V AVR Series Regulator. (8V to 5V)
IC708 SoC 3.3V AVR
Series Regulator. (4.4V to 3.3V)
Supply for SoC 3.3V, SDRAM, NOR Flash, NAND Flash, iPod IC, SoC 1.8V & System
µ-com to SoC control Level shift.
IC709 Level Shift SoC (3.3V) to System µ-com (5V)
IC710 Level Shift SoC (3.3V) to System µ-com (5V)
IC711 SoC System on Chip.
Control CD Mecha, DSP, Internal Memory. USB Host. Audio decoding, etc.
IC712 Level Shift System µ-com (5V) to SoC (3.3V)
IC714 SDRAM (for SoC) For buffering program & audio data.
IC715 NOR Flash Memory (for SoC) SoC firmware installed.
IC716 SoC Core 1.8V AVR Series Regulator. (3.3V to 1.8V)
IC717 DAC D5V AVR Series Regulator. (8V to 5V)
IC830 DSP Audio Digital Signal Processor.
Analog input & Digital (I2S) input. WOW HD, TA, tone, HPF/LPF etc. control.
IC831 DAC Audio data converter Digital (I2S) to Analog.
IC860 DAC out LPF “SW L/R” Output buffer and gain control.
IC861 DAC out LPF “FR/RR” Output buffer and gain control.
IC862 DAC out LPF “FL/RL” Output buffer and gain control.
Q10,12 Audio8V AVR Active time is “Power on”.
Q11 Switch14V Active time is “Power on”.
Q20,21 Backup5V AVR Active time is “Power on”.

6
KDC-W9537U/W9537UY
KDC-X9006U/X991
COMPONENTS DESCRIPTION
Ref. No. Application / Function Operation / Condition / Compatibility
Q22,23 Switch5V Active time is “Power on”.
Q30,31 Panel Mecha Motor AVR Active time is “Power on”.
Q32 Motor / Servo enable Active time is “Power on”.
Q33,34 CD Servo AVR Active time is “Power on”.
Q40~42 OEL8V AVR Active time is “Power on”
Q43 Panal5V Discharge switch Use time is only 100msec, after “Panel detect”.
Q50~52 Illumination AVR Active time is “Power on”.
Q70~72 Switch16V (Surge protection) Active time is “Power on”.
Q80,81 Panel5V switch Use time is panel µ-com Low power mode.
* Normal function OFF.
Q83 Switching Regulator Frequency
control switch
1pin, 2pin : Freq.
L, L : 430kHz L, H : 600kHz H, L : 650kHz H, H : 820kHz
Q84 Panel AVR enable When this Tr does off, “Panel AVR” is on.
Q85 USB/Digital AVR enable When this Tr does off, “USB/Digital AVR” is on.
Q86,88,89 SoC Protection AVR Use time is only 200msec, after “BUDET OFF”.
* “BUDET OFF” is too high or low B.U voltage.
Q100,101,103 Audio Ref. circuit AVR IC101 →Power IC “Ripple”.
Q104,105 Ripple discharge driver Discharged Power IC “Ripple”.
* Power off, Standby, etc.
Q120 Backup detect switch Check of Backup voltage. It is on if good.
Q122 ACC detect switch Check of ACC voltage. It is on if good.
Q123 Surge detect switch Check of over input voltage. Detects it in on.
Q150,151 Power antenna switch Active time is “AM/FM” source.
* Exception RDS/RBDS models.
Q160 Ext. Amp control Buffer It is buffer for “System µ-com” output.
Q180 Small lamp detect switch Check of small lamp. Detects it in on.
Q320 Spectrum analyzer AGC When this circuit has an excessive input, a return is hung and an output is reduced.
Q350,351 AVR for IC350
* 5VPreout Amp “-AVR” Active time is “Power on”.
Q352~354 5VPreout Amp AVR “-9V” Q352 and 353 works as a differential amplifier, Q354 works as a driver and -9.1V is
supplied to OPAmp for preout.
Q356~358 5VPreout Amp AVR “+9V” Q356 and 357 works as a differential amplifier, Q358 works as a driver and +9.4V is
supplied to OPAmp for preout.
Q361 Preout mute Driver (Front, Rear) When this Tr does on, it is mute.
Q362 Preout mute Driver (SW) When this Tr does on, it is mute.
Q363 Preout mute switch SW Rch
Q364 Preout mute switch SW Lch
Q365 Preout mute switch Front Lch
Q366 Preout mute switch Rear Lch
Q367 Preout mute switch Front Rch

7
KDC-W9537U/W9537UY
KDC-X9006U/X991
COMPONENTS DESCRIPTION
Ref. No. Application / Function Operation / Condition / Compatibility
Q368 Preout mute switch Rear Rch
Q400,401 AM+B switch Active time is “AM” source.
Q500,501 Panel detect switch When connect panel, it is on.
Q600 DSI (LED) driver
DSI lights when this Tr on.
* Panel mecha open or Illumination detect & panel taken off.
DSI turns off when this Tr off.
DSI turns on and off when panel is taken off.
Q703,705 CD mecha “MSTOP” buffer Level shift. (3.3V to 5V)
Q704,706 CD mecha “MRST” buffer Level shift. (3.3V to 5V)
Q707 SoC “RESET” buffer Level shift & inverter. (5V to 3.3V)
●CD PLAYER UNIT (X32-5980-02)
Ref. No. Application / Function Operation / Condition / Compatibility
IC1
CD Signal Processor & MECHA
µ-COM RF Amplifier responding to
CD-RW
Focusing, tracking, sled and spindle servo processing.Automatic adjustment (focusing,
tracking, gain, offset and balance) operations. Digital signal processing (DSP, PLL,
sub-codes, CIRC error correction, audio data interpolation processing) operations,
and microcomputer function. Generation of RF signal based on the signals from the
APC circuit and the laser pick-up, and generation of servo error (focusing error and
tracking error) signals. Detection of dropout, anti-shock, track crossing and off-tracking
conditions, included gain control function during CD-RW.
IC2 3.3V REG Supplies 3.3V to IC1 and the laser pick-up.
IC6 4ch BTL Driver
Focusing and tracking coil, sled and spindle motor driver, disc loading and eject operation.
Q3 5V-3.3V Level Shift Shifts 5V to 3.3V, or 3.3V to 5V.
Q6 BU3.3V SW Q6 is ON when Q8 or Q9 is ON.
Q7 APC (Auto Power Control) Drives LD (Laser Diode).
Q8 Power Supply Control
Power Supply Control from MECHA µ-COM. Q6 is ON when pin 63 (P ON1) of IC1 is Hi.
Q9 Power Supply Control Power Supply Control from system µ-COM. Q6 is ON when pin 125 (MSTOP) of IC1 is Hi.
D1,2 5V Force Voltage Prevention 5V Force Voltage Prevention from MECHA µ-COM side.
D3 Laser Diode Protection Prevents reverse bias which is applied to laser. Laser destruction prevention.

8
KDC-W9537U/W9537UY
KDC-X9006U/X991
MICROCOMPUTER’S TERMINAL DESCRIPTION
●SYSTEM MICROCOMPUTER: 30624MWPB56GP (X34: IC500)
Pin No. Pin Name I/O Application Truth
Value Table
Processing Operation Description
1 WIRED_REMO I Remote control input Pulse width detection
1NC O
Not used in models without remote control Output L fixed
2 LX_REQ_M O Communication request to slave unit
3 LX_MUTE I MUTE request from slave unit H: Mute ON, L: Mute OFF
4 LX_CON O Start-up request to slave unit H: Slave unit ON, L: Slave unit OFF
5 LX_RST O Hardware-reset to slave unit H: RST, L: Normal
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 LX_REQ_S I Communication request from slave unit
17 RDS_CLK I RDS clock input terminal
17 NC O Output L fixed
18 PANEL_DET I SLIDE panel mounting detection
L: Panel is mounted, H: Panel is dismounted
In synchronous with dismounting of the panel, the panel
power supply shall be turned OFF as soon as the panel
is dismounted, and then the power shall remain in Power
OFF condition.
19 PON_AM I/O AM+B power supply control terminal H: ON when AM is being received
Hi-z: OFF in other condition.
20 TUN_IFC_OUT I F/E IFC OUT input terminal H: Station is found, L: No station is found
21 RDS_AFS_M I/O Switching time constant when noise is
detected rL: During AF search, Hi-Z: While in normal
21 NC O Output L fixed
22 RDS_QUAL I RDS decoder QUAL input terminal
22 NC O Output L fixed
23 RDS_DATA I RDS decoder DATA input terminal
23 NC O Output L fixed
24 FSEL1 I/O SW-REG frequency setup terminal
25 FSEL2 I/O SW-REG frequency setup terminal
26 PWIC_BEEP O Beep output 2kHz, 1kHz
27 TUN_SCL I/O F/E I2C clock input/output terminal 400k

9
KDC-W9537U/W9537UY
KDC-X9006U/X991
MICROCOMPUTER’S TERMINAL DESCRIPTION
Pin No. Pin Name I/O Application Truth
Value Table
Processing Operation Description
28 TUN_SDA I/O F/E I2C data input/output terminal 400k
29 PAN_SYS_DATA O System µ-com →Panel data UART MAX 500k
30 PAN_PAN_DATA I Panel →System µ-com data UART MAX 500k
31 PAN_SYS_REQ O Panel →System µ-com communication
request
32 PAN_PAN_REQ I System µ-com →Panel communication
request
33 S_SYS_DATA O System µ-com →SOC data 400k, Only models with USB
34 S_SOC_DATA I SOC →System µ-com data 400k, Only models with USB
35 S_SOC_CLK I Host is SOC. CLK from SOC 400k, Only models with USB
36 PM_OPEN I Panel full-open detection eRefer to the truth value table
37 PM_CLOSE I Panel close detection eRefer to the truth value table
38 PM_DET I Panel mechanism detection H: While checking function
39 ROMCOR_DET I ROM correction writing-in request H: Possible to re-write ROM (ROM correction)
(I2C is open)
39 EPM I
EPM input terminal for re-writing ROM.
ROM is re-writable when the input is “L”
at the boot up.
40 DSI I/O DSI control terminal (for 1DIN) H: ON, Hi-Z: OFF
41 CD_DISC12_SW I CD disc detection terminal (12cm) L: 12cm disc
42 CD_LOS_SW I CD loading detection terminal L: Completion of ejection
43 CD_MUTE I
While 6A11 series is used (USB model);
Servo, DAC mute request
While 65XX series is used; Normal
mechanism mute request. Set up the
shared LR with normal mechanism
request command
L: Mute request, H: While in normal
44 PAN_SC_CON O Panel operation control terminal.
CE when the system µ-com is re-written H: While in normal, L: Stop the panel
45 SOC_SRST O SOC reset terminal H: Reset, Hi-Z: Normal
46 SOC_SSTOP O SOC stop terminal H: Normal, L: Stop SOC
47 CD_DISC8_SW I CD disc detection terminal (8cm J only)
47 NC O Other than J is not used. Output L fixed
48
CD_LOE_LIM_SW I CD detection terminal (Chucking detection) H: Loading completed, L: No disc is found
49 CD_LOEJ I/O CD motor control terminal qRefer to the truth value table
50 CD_MOTOR O CD motor control terminal qRefer to the truth value table
51 PM_MOT1 O Panel mechanism motor control 1 wRefer to the truth value table
52 PM_MOT2 O Panel mechanism motor control 2 wRefer to the truth value table
53 SW_VBUS I/O VBUS5V control terminal H: ON, Hi-z: OFF
Turned ON or OFF by command from SOC.

10
KDC-W9537U/W9537UY
KDC-X9006U/X991
MICROCOMPUTER’S TERMINAL DESCRIPTION
Pin No. Pin Name I/O Application Truth
Value Table
Processing Operation Description
54 PON_ILL O
Panel LED
FL filament power supply
FL bias power supply control
H: ON, L: OFF
Turned OFF when the display is black out.
Turned OFF when panel is dismounted/opened.
55 SOC_BU I/O
Power supply control for processing the
SOC power supply backup in case of
momentary power down
Hi: ON, Hi-Z: OFF,
“H” right after detecting BUDET
“Hi-Z” in 200msec
56 PON_REG I/O PANEL 5V/3.3V switching power supply
control terminal L: ON, Hi-Z: OFF
57 PON_P3.3V I/O PANEL 3.3V power supply control
terminal H: ON, Hi-Z: OFF
58 P5V_DIS I/O PANEL 5V discharge control for 1DIN,
Reset securing when Power OFF H: Discharge, Others: Hi-Z
59 PON_PANEL I/O
Power supply for panel µ-com (During
startup and Low power consumption
mode), Required for panel authentication
H: ON, Hi-Z: OFF
OFF when panel is dismounted
60 VCC2
61 PON O Power supply control terminal Power ON: H, Power OFF: L
62 VSS
63 PON_REG2 I/O USB5V/SoC, DSP_AVR switching power
supply control terminal L: ON, Hi-Z: OFF
64 TYPE_2 I A/D 5 patterns
65 DIAG I/O PCON over current detection
66 P_CON I/O PCON control terminal POWER ON: H, POWER OFF: Hi-z, STBY source: Hi-Z
67
OEM_DISP_DATA I/O External display DATA External display
67 NC O Output L fixed
68 OEM_DISP_CLK I/O External display CLK External display
68 NC O Output L fixed
69 OEM_DISP_CE I/O External display control request External display
69 NC O Output L fixed
70 ANT_CON O ANTCON control terminal TUNER source: H, POWER OFF: L, STBY source: L
71 EXT_AMP_CON I/O EXT_AMP control terminal
71 NC O Not used when without EXT_AMP Output L fixed
72 ACC_DET I ACC detection L: ACC found, H: ACC not found
73 BU_DET I Reduced voltage detection L: BU found, H: BU not found, at reduced voltage
74 ILLUMI_DET I Dimmer illumi detection L:ON, H:OFF
75 S_SYS_REQ O System µ-com →SOC communication
request
76 S_SOC_REQ I SOC →System µ-com communication
request
77 PWIC_MUTE O Power IC MUTE terminal L: While STANDBY source, momentary power down
L: While TEL MUTE

11
KDC-W9537U/W9537UY
KDC-X9006U/X991
MICROCOMPUTER’S TERMINAL DESCRIPTION
Pin No. Pin Name I/O Application Truth
Value Table
Processing Operation Description
78 PWIC_STBY O Power IC standby terminal POWER ON: H, POWER OFF: L
79 LINE_MUTE I Line mute detection TEL MUTE: 1V or lower (J: NAVI MUTE)
NAVI MUTE: 2.5V or higher (To the entire destination)
80 PWIC_DC_DET I DC offset detection terminal
81 SDA/EVOL_SDA I/O System µ-com →IC-2 data output Communication speed 200-400k
81 SDA/E2P_SDA I/O I2C clock for ROM correction Communication speed 200-400k
82 SCL/EVOL_SCL I/O System µ-com →IC-2 CLK output Communication speed 200-400k
82 SCL/E2P_SCL I/O I2C data for ROM correction Communication speed 200-400k
83 MUTE_SA I/O IC-2 MUTE_A control
Spectrum analyzer MUTE
L: Mute ON, Independent setup of time constant 0.5ms,
Hi-Z: While in normal
84 MUTE_AFS I/O IC-2 MUTE_C control (E Type)
AFS MUTE
L: Mute ON, Independent setup of time constant 0.5ms,
Hi-Z: While in normal
84 Not used O Other type than E type Fixed to Hi-Z
85 MUTE_0 O IC-2 FRONT MUTE control L: Mute ON, Independent setup of time constant 10ms
H: While in normal
86 MUTE_1 O IC-2 REAR MUTE control L: Mute ON, Independent setup of time constant 10ms,
H: While in normal
87 MUTE_2 O IC-2 SW MUTE control
L: Mute ON, Independent setup of time constant
10ms, H: While in normal, Shall be used together with
MUTE_PRE_SW, IC2 shock noise measure
88 MUTE_PRE_FR O External PREOUT_MUTE F/R “L” when 0 bit, or momentary power down
89 MUTE_PRE_SW O External PREOUT_MUTE SUB
MUTE_2 shock noise measure
“L” when 0 bit, or momentary power down, Shall be used
in addition to MUTE_2
90 G_Y_OUT I Detection of Y direction movement of G
analyzer
90 NC O Output L fixed
91 G_X_OUT I Detection of X direction movement of G
analyzer
91 NC O Output L fixed
92 RDS_NOISE I FM noise voltage detection terminal
92 NC O Output L fixed
93 TUN_SMETER I S meter voltage detection terminal
94 AVSS
95 SVR I/O PowerIC SVR discharge control terminal H: Normal operation, Hi-Z: SVR discharge
96 VREF A/D analog reference voltage
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

12
KDC-W9537U/W9537UY
KDC-X9006U/X991
MICROCOMPUTER’S TERMINAL 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 control
OPEN CLOSE STOP WAIT
PM_MOT1 L H H L Connect to IN1
PM_MOT2 H L H L Connect to IN2
ePANEL MECHANISM control
FULL_OPEN FULL_CLOSE OTHER
PM_OPEN H L L →Switch should be set in front
PM_CLOSE H L H →Switch should be set back
rAFS processing
RDS_AFS_M Status
AFS LOW L No sound output in AF search
AFS MID L There is sound output in AF search
AFS HIGH Hi-Z Normal reception

13
KDC-W9537U/W9537UY
KDC-X9006U/X991
MICROCOMPUTER’S TERMINAL DESCRIPTION
●PANEL MICROCOMPUTER 703134AGJ017A (X16-398: IC4)
Pin No. Pin Name I/O Application Processing Operation Description
1~7 D14~D8 I/O Data input/output
8 3.3VDD - 3.3V
9 VSS -
10~17 D7~D0 I/O Data input/output
18 OEL_RST I/O OEL controller RESET output H: Clear RESET, Hi-Z: RESET
19 NC O
20 SYS_REQ I System µ-com communication request input H: While in data communication
21 SC_CON I System µ-com communication panel operation
control H: Panel operation
22 FROM_RST I/O FLASH ROM RESET H: Clear RESET, Hi-Z: RESET
23 2.5VDD - 2.5V
24 VSS -
25 OEL_INT I OEL controller interrupt input L: Interrupt (Level/Edge are set in the register)
26,27 KS1, KS2 I/O Key scan output L: Output, Hi-Z: Switching
28 TDO O Used when debugging NC while in normal operation
29 TDI O Used when debugging NC while in normal operation
30,31 KS3, KS4 I/O Key scan output L: Output, Hi-Z: Switching
32 TRST I Used when debugging H or L when debugging
33 ROTARY_CCW I Rotary A input 1 pulse/2 clicks, 15 pulses/360°
34 ROTARY_CW I Rotary B input 1 pulse/2 clicks, 15 pulses/360°
35 TMS O Used when debugging NC while in normal operation
36 TCM O Used when debugging NC while in normal operation
37 3.3VDD -
38 EVSS -
39 KS5 I/O Key scan output L: Output, Hi-Z: Switching
40 NC Not used Output L fixed
41,42 KR2, KR3 I Key return input
43 FROM_BUSY I FLASH ROM BUSY input L: BUSY
44 PAN_REQ O Panel communication request output H: While in data communication
45 SYS_DATA I Data reception from system µ-com UART communication
46 PAN_DATA O Data transmission from the panel UART communication
47 NC O
48 KR4_INT I Key return input Interrupt enable
49,50 NC O
51 ROTARY2_CW I Rotary 2B input (For new operation) 1 pulse/2 clicks, 15 pulses/360°
52 ROTARY2_CCW I Rotary 2A input (For new operation) 1 pulse/2 clicks, 15 pulses/360°
53~55 NC O

14
KDC-W9537U/W9537UY
KDC-X9006U/X991
MICROCOMPUTER’S TERMINAL DESCRIPTION
Pin No. Pin Name I/O Application Processing Operation Description
56 3.3VDD -
57,58 X2, X1 I Clock input 8MHz, internal 80MHz
59 CVSS -
60 CKSEL I Clock generator operational mode input Direct connection to GND
61 PSEL I Input of input frequency selection signal in
PLL mode
VDD connection when the main clock is 5.5MHz or above,
GND for other frequencies
62 2.5VDD -
63 VSS -
64 MODE0 I µ-com operation mode input Direct connection to GND
65 MODE1 I µ-com operation mode input
Used when debugging H: While writing-in
66 PAN_RST I Input from reset IC Clear in ***msec after PON_PANON,
Reset in 60usec after PON_PANOFF
67 AVDD1 I D/A conversion reference voltage Connected to SW3.3V, 0V when POWER OFF
68,69 NC I Input-dedicated terminal Pull-down
70 AVSS1 - D/A conversion reference GND Direct connection to GND
71 AVSS0 - D/A conversion reference GND Direct connection to GND
72 AVDD0 I A/D conversion reference voltage Connected to SW3.3V, 0V when POWER OFF
73 WAVE_IN I Audio input AD read
74 F06 I BPF (10kHz) AD read
75 F05 I BPF (3.3kHz) AD read
76 F04 I BPF (1kHz) AD read
77 F03 I BPF (330Hz) AD read
78 F02 I BPF (150Hz) AD read
79 F01 I BPF (63Hz) AD read
80 PAN3.3DET I Monitor voltage (PAN3.3V) AD read
81 2.5VDD
82 VSS
83 NC O
84 NC (TYPE) I
85 NC O Output L fixed
86 REMO I Remote control signal input Detect with pulse width
87 PON_OEL I/O OEL AVDD power supply switch H: ON, Hi-Z: OFF
88 PON_3.3V I/O FROM, RAM, OEL3.3V, E2P_ROM switch H: ON, Hi-Z: OFF
89 PON_5V I/O 5V power supply switch Remote control IC, Spectrum analyzer IC power supply
H: ON, Hi-Z: OFF
90 BUS_CLK O OEL controller clock
91 OEL_WAIT I OEL controller wait

15
KDC-W9537U/W9537UY
KDC-X9006U/X991
MICROCOMPUTER’S TERMINAL DESCRIPTION
Pin No. Pin Name I/O Application Processing Operation Description
92 SRAMCHK O For checking the SRAM production technology
implementation OK: H, NG: L (check land is needed)
93 NC O Output L fixed
94 WE O Data input request to memory (writing-in) L: Write the data in memory, Hi-Z: Wait
95 OE O Data output request to memory (reading-in) L: Read data from memory, Hi-Z: Wait
96 UBE O Upper byte request
97 LBE O Lower byte request
98 3.3VDD
99 VSS
100 FROMCHK O For checking the F-ROM production
technology implementation OK: H, NG: L (check land is needed)
101 CE_FROM O Permit to operate FLASH-ROM L: FLASH-ROM access, Hi-Z: Wait
102 NC O Not used Output L fixed
103 CE_SRAM O Permit to operate SRAM L:SRAM access, Hi-Z:Wait
104 NC O Not used Output L fixed
105 ROMCOR_SCL I/O For ROM correction Input when other than writing-in (including STB)
106 ROMCOR_SDA I/O For ROM correction Input when other than writing-in (including STB)
107 NC O Not used Output L fixed
108 PON_BLUE I/O Blue sub illumi light on switch H: ON, Hi-Z: OFF
109 PON_KEY_ILL I/O Key illumi light on switch H: ON, Hi-Z: OFF
110,111 NC O Not used Output L fixed
112 3.3VDD
113 EVSS
114~123 A25~A16 O Address output
124 2.5VDD
125 VSS
126~133 A15~A8 O Address output
134 3.3VDD
135 EVSS
136~142 A7~A1 O Address output
143 NC O Not used Output L fixed
144 D15 I/O Data input/output

16
KDC-W9537U/W9537UY
KDC-X9006U/X991
●How to enter the test mode
Press and hold the [FNC] and [AUD] 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).
• CRSC is off regardless of the availability of switching
function.
• SYSTEM Q is NATURAL (=FLAT).
• BEEP is always activated by briefly pressing a button.
• AUX is ON.
• DISPLAY TYPE is TYPE B-1 (One fixed line + 2 variable
lines).
• TUNER source display shall be as shown below:
E type: Upper row = Frequency (Fixed), Middle row = PS,
Lower row = Spectrum analyzer/Clock.
M/K type: Upper row = Frequency (Fixed), Middle row =
SNPS, Lower row = Spectrum analyzer/Clock.
• CD/USB source display shall be as shown below:
When playing CD-DA: Upper row = P-TIME (Fixed),
Middle row = TRACK TITLE, Lower row = Spectrum
analyzer/Clock.
In other cases: Upper row = P-TIME (Fixed), Middle row =
TITLE / ARTIST, Lower row = Spectrum analyzer/Clock.
• SOURCE SELECT shall be 2.
●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.
●Specification of FST soft mute adjustment mode
1. Receive the TUNER FM mode in the LOUD OFF
condition at the VOLUME 30.
2. Press and hold the [ ] key for 2 seconds to enter the
FST soft mute adjustment mode.
3. In the adjustment mode, the following display is shown
and adjust the mute between 0 (18dBµ) and F (36dBµ)
with the [FM]/[AM] keys.
(Display) SMD—x_ _ _ (Adjustment value, 0~F is
displayed in “x”.)
4. When the adjustment is “OK”, press and hold the [ ]
key for 2 seconds again to write the adjustment value
in the E2PROM, and after the successful writing-in the
“EP_WRITE” is displayed.
5. Press the [ ] key briefly to exit from the FST soft mute
adjustment mode. (The test mode continues.)
●RBDS/RDS auto measurement
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” : Front-end E2PROM 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: FMA • Forced WIDE: FMW
• Forced MIDDLE: FMM • Forced NARROW: FMN
●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 and a MP3 / WMA / AAC
/ WAV discs with 8 files or less, the disc is played from the
1 track in the normal order.
TEST MODE

17
KDC-W9537U/W9537UY
KDC-X9006U/X991
• Pressing the [ ] key goes back by 1 track from the track
being played.
• While in CD source, press the [1] key briefly ([1] key for
CD-DA and [FM] key) 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 in the upper row.
Press the [3] key briefly again to go back to the normal
screen. (Time code display)
• While in CD source, press the [6] key briefly ([6] key for
CD-DA, and [AM] key) to jump to No.15. At this time, the
volume value is set to 28 (5V 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.
●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
adjustment items are included.
• By pressing [AUD] and [FM] key briefly, switch the item
to be adjusted in the following order. (Only in forward
rotation)
The default item shall be Fader and the next item shall be
Balance adjustment. (The adjustment afterward is free.)
• 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)
• 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 (internal AUX) is adjusted by the VOL knob
and [ ]/[ ] keys in 3 steps: -8↔0↔+8. (Default value: 0)
• 2Zone ON/OFF is adjusted by the VOL knob and
[]/[ ] keys in 2 steps: OFF↔ON. (Default value: OFF)
●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.
• Only in the test mode, make the USB source MENU show
the F/W Version check item and make the F/W Version be
shown as the default items in the test mode.
• The default item of the TUNER source MENU in the test
mode shall be Local Seek ON/OFF switching. (E/E2 type)
●2ZONE
• If the [AUTO]/[TI] keys is pressed briefly while in a source
other than STANDBY, 2ZONE is switched between 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.)
●OPEL communication items
(OPEL/OEM display supporting model)
During the test mode, OPEL communication line outputs
the following (At every 500msec, the output condition of
the communication line will be switched.)
CE
DATA
CLK
500msec 500msec 500msec
●
G sensor display (G-Analyzer supporting model)
Press [ATT] key briefly in the STANDBY source to change
to the numerical value display that shows the vertical G
and horizontal G conditions.
ACCEL CORNER
+0.27G →0.32G
●Special displays while all lights are on
When all lights are on with STANDBY source, if the
following keys are pressed, the following messages are
displayed.
TEST MODE

18
KDC-W9537U/W9537UY
KDC-X9006U/X991
[FM]
key
Key pressed briefly: ROM correction version is displayed.
(Display) R1234_ _ _
When E2PROM is not installed: ERR_ _ _ _ _
When not written in: R – – – – _ _ _
When data not matching: R∗∗∗∗_ _ _
[]
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
information. (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
communication 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]~[7]
key
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.
Table 1 Version & Service information display mode
[AM]
key
↑
[1]
key
Key pressed briefly: Version is displayed.
(Display) C0602WK__SYS1.23
(Display) STYPE : xx_PAN1.11
(Display) PTYPE : x_ _MEM3.21
*1 STYPE indicates system µ-com destination,
and PTYPE indicates panel µ-com destination,
and show real-time condition of the destination
terminal.
[2]
key
Key pressed briefly: Serial No. is displayed. (8 digits)
(Display) SNo_××××××××
[3]
key
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)
↓
[FM]
key
[4]
key
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
Key pressed briefly: Number of CD EJECT times is
displayed.
(Display) EjeCnt_××××× MAX 65535 (times)
[6]
key
Key pressed briefly: Number of times panel is
opened/closed is displayed. (∗1)
(Display) PnCnt_××××× MAX 65535 (times)
[7]
key
Key pressed briefly: Switching of all lights turned on
(In this mode, [ ]/ [ ] keys can be used for the
switching.)
All the white lights on (or version display) →All the
red lights on →All the green lights on →All the blue
lights on →All the white lights on →All the red lights
on →. . .
[ ] 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.
(∗1): Count 1 when the panel is fully opened and when the
disk is being loaded.
Table 2 CD information display mode
[AM]
key
↑
I2C communication condition and CD mechanism error log display
(Display) I2C_●●_ _ _ _ _ _ _ _ _ _ _ _
(Display) ERR_1−▲▲,2−▲▲,3−▲▲
“OK” or “NG” is displayed for “●●”. “– –” or the error code is
displayed for “▲▲”.
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)
TEST MODE

19
KDC-W9537U/W9537UY
KDC-X9006U/X991
↓
[FM]
key
CD time code error count data display (count not updated)
(Display) C ount_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 and
reset the AUDIO setting value to the test mode default
value.
●Flash ROM check (X16-398 IC1)
1. After entering the test mode, read the manufacture code
of the Flash ROM, and the FROMCHK terminal of the
IC4-pin 100 repeats the “Hi→Low→Hi · · · ·” under the
normal condition.
Output "Low" under the abnormal condition.
When the manufacture code is normal, press [AM] key
briefly to start checking the connection at all the terminals.
When the connection is normal, terminate the repetition
of “Hi→Low→Hi · · · ·” at the FROMCHK terminal, and
output “Hi”.
When the connection is not normal, output “Low”.
2. If the [AM] key is pressed and held for 2 seconds while all
lights are on, Flash ROM data is initialized.
While the deletion is executed, “Data_Erase....” is
displayed.
(Note) Do not touch anything while this is being displayed.
At the completion of the deletion, “Erase_OK!!” is
displayed.
If the “Erase_NG!!!!!!” is displayed, it indicates that the
data in Flash ROM could not be deleted due to some
reason.
If the same message is displayed after repeating the
process by pressing and holding [AM] key, it indicates the
error in Flash ROM.
●Static RAM Check (X16-398 IC12)
(Regardless of the test mode,) the manufacture code is
read out from the Static RAM after the Power ON, and “Hi”
is output at the SRAMCHK terminal (pin 92) of the IC4
when the code is normal.
When the code is abnormal, “Low” is output.
●Other
• When Power ON, do not display “CODE_NG”, “CODE_
OFF” and “CODE_ON”.
• When started in the test mode, duration of prohibiting
LINE MUTE shall be changed from 10 seconds to 1
second.
• When in the test mode, do not write security code by
security jig.
• When in the test mode, serial number is not written with a
serial-number-writing jig.
• When in the test mode, when DC 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 Information
& Service Information & DC Error Detection Information
Clear Mode, or DC Error Detection Information Clear
Mode.
Also, do not display DEMO ON/OFF option items in the
MENU in STANDBY source in the above modes.
• In the test mode and when the PM_DET terminal is
“H”, the panel is fully opened or closed by pressing the
[EJECT] key briefly regardless of the disk is inserted or
not. (Protection time is 3 seconds.) At this time, press and
hold the [EJECT] key for 1 second to eject the disk.
●Clearing DC error detection information
(E2PROM(F/E) data clearing)
1. Press and hold [ATT] and [AUD] keys and reset-start
to go into the DC error display mode. (While “– – – –” is
being displayed, power can be ON for 30 minutes.)
2. While in STANDBY source, the current DC error detection
condition is displayed.
First
line
DC error detection display 1 (To show such detection as
the improper connection, and other detection)
(Display) DC1_OK_ _ (not detected.)
ERR (Improper connection or other error
is detected.)
Second
line
DC 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.)
TEST MODE

20
KDC-W9537U/W9537UY
KDC-X9006U/X991
3. While the DC 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.
(E2PROM Clear)
4. DC error display mode is cancelled by resetting. (The last
screen will not be retained.)
(Note) In this mode, the DC error detection display, “Protect”
is not shown.
●Clearing of backup/installer memory & CD
mechanism information & service information
(E2PROM data clear) and Initialization of the
internal memory (NAND FLASH MEMORY clear)
Backup/installer memory: X34-IC520(E2PROM)
“AUDIO_E2P”
CD mechanism information & service information: TUNER
F/E (E2PROM) “CD_E2P_ _ _”
Internal memory: X34-IC700 (NAND FLASH) “NAND
FLASH”
1. While pressing [SRC] and [AUTO]/[TI] keys, start resetting
to start initializing the following information and NAND
FLASH MEMORY. (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
updated)
[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
[DC error detection information]
• DC error detection display 1
• DC error detection display 2
2. During the initialization process, the followings are
displayed.
Data_Erase....
3. After the initialization process is completed, the following
is displayed.
When successfully completed
CD_E2P_ _ _ _ : K
AUDIO_E2P_ : K
NAND_FLASH : K
When finished but unsuccessful (Example 1): CD
mechanism information/service information/DC error
detection information initialization NG
CD_E2P_ _ _ _ : ×
AUDIO_E2P_ : K
NAND_FLASH : K
When finished but unsuccessful (Example 2): Backup/
installer memory initialization NG
CD_E2P_ _ _ _ : K
AUDIO_E2P_ : ×
NAND_FLASH : K
When finished but unsuccessful (Example 3): Internal
memory initialization NG.
CD_E2P_ _ _ _ : K
AUDIO_E2P_ : K
NAND_FLASH : ×
When finished but unsuccessful (Example 4): All the
initialization NG
CD_E2P_ _ _ _ : ×
AUDIO_E2P_ : ×
NAND_FLASH : ×
4. In this mode, even if the specified time has passed, the
backup memory items are not written into E2PROM.
5. This mode is cancelled by resetting. (The last screen will
not be retained.)
(Note) In this mode, the DC error detection display, “Protect”
is not shown.
●Frequency span switching (K/M type)
While power is OFF, press and hold [FNC] and [ATT]
keys, and press [SRC] key to power ON.
●Security
• How to enter the forced POWER ON mode
While “– – – –” is being displayed, while simultaneously
pressing [FNC] key and [AUTO]/[TI] keys, press [RESET]
button. With this, it is possible to turn the power on for 30
minutes only.
TEST MODE