Kenwood KDC-X959, KDC-Z939, KDC-Z738, KDC-Z838W Service Manual

CD RECEIVER

KDC-X959/Z939,Z738,Z838W

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SERVICE MANUAL

This service manual does not include information on the CD mechanism assembly (exploded view, parts list,

●

schematic diagram or mechanism operation description).

For such information, please refer to the CD mechanism assembly service manual (X92-4450-0x: B51-7889-00)
for Z738.

For such information, please refer to the CD mechanism assembly service manual (X92-4590-0x: B51-7933-00)

TEL [phone] QQ 376315150 892498299

for KDC-X959/Z939, Z838W.

KDC-X959

Panel assy
(A64-2687-11)

Z738

Front glass
(B10-4240-01)

Front glass
(B10-4252-01)

KDC-Z939

Panel assy
(A64-2688-11)

Z838W

8

4

2

9

© 2002-3 PRINTED IN JAPAN

B51-7931-00 (S) 3397

9

Front glass
(B10-4241-01)

Front glass
(B10-4242-01)

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2

9

9

TEL [phone] QQ 376315150 892498299

TEL

Panel assy
(A64-2723-11)

Plastic
cabinet assy
(A02-2712-13)

DC cord
(E30-6062-05)
: KDC-X959

13942296513

Escutcheon
(B07-3050-02)
: except KDC-X959
(B07-3057-02)
: KDC-X959

DC cord
(E30-6063-05)
: except KDC-X959

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Mounting
hardware assy
(J21-9823-03)

Lever
(D10-4674-04)x2

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6

7

3

Panel assy
(A64-2689-11)

Screw set
(N99-1656-05)

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Remote controller assy
(A70-2025-05)
: KDC-X959

Screw set
(N99-1723-05)
: KDC-X959/Z939

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Remote controller assy
(A70-2026-05)
: except KDC-X959

Antenna adaptor
(T90-0523/0534/0552-05)
: except KDC-X959

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CH

F/E

FM+B

PLL+B

AM+B

BUFF

E-VOL

DECODER

RDS

ISO
AMP

OEM

EJECT LED

DSI

DISP

4.5V PRE
DC/DC

2WAY MUTE

ACC DET

DIMMER

TEL-MUTE

ACC

DIMMER

POWER IC

PRE AMP

PRE OUT

SP OUT

MUTE
DRIVER

NOISE
BUFFER

ANT-CON

ANT-CON

P-CON

P-CON

IF+B

CD
MECHA

AUX

SW
OP AMP

E'S

SPEANA
AGC OP AMP

MUTE

4.5V

BU DET

BACK UP

EX AMP CONT

EX AMP CONT

NAVI MUTE

RESET

DET

PANEL

SERVO
AVR

A8V

SW14V

DC/DC
REG

VOLTAGE

SW5V

PANEL5V

Q43,44
Q45,46

Q52

IC14

IC1

IC2

Q36 IC8,Q34

IC5

Q37-42

IC10-12

IC4

Q32,

IC7 33,35

Q15

Q31

Q30

Q14

Q111,112

Q26-29

Q3

Q9

IC3,Q4-6

IC6,Q16-23

Q1

Q10-13

Q7,8

Q201,473,474

IC16305,306

IC20

IC21

EEP ROM

IC25

Q101,

P-CON
ANT-CON

EXCEPT KDC-X959/Z939

KDC-X959/Z939 ONLY

Z838W/Z738 ONLY

KDC-X959

ONLY

EXCEPT KDC-X959

KDC-X959

EXCEPT

Z738 ONLY

EXCEPT Z738

MI-COM

PANEL
MI-COM

OEL

BUFFER

KEY ILL

KEY
MATRIX

SW

REMO

SPEANA
BPF

BUFFER

SRAM

ROM

3.3V REG

RESET SW

+B

OEL PAN 5V

Q703,704

Z738

EXCEPT

EXCEPT Z738

IC4

IC3

IC9 IC2

IC1

IC6

IC7

Q4,5,9

IC8

Q6,8

OEL 16V
+B

IC24

BU5V

Q475,476

CONVERTER

CD4.7V

IC23,Q472

EXCEPT

Z738

FLUSH
ROM

IC5

SDA
SCL

S-METER

SW5V

RDCK

FM

AM

SW5V

AUDIO OUT

BACK UP

DATA H
DATA C

MUTE

CH

SDA

RDDA

BU5V

BU5V

DSI

EJECT G

EJECT R/G

CD/MD

FM
AM

1512mV

866mV

3795mV

BU5V

PRE MUTE

PMUTE
PSTBY

MUTE

BEEP

AUX SW

CD-AUX

E-VOL OUT LEVEL

A8V

IFC OUT

SW5V

A8V

SCL

QUAL

AFS

SERVO

BU5V

Rch
Lch

A8V

A8V

A8V

REQ H
RST

REQ C

CH CON

CLK

A8V

+B

-B

BACK UP

BU5VBU5V

A8V

+B

-B

SERVO

MI-COM

SW5V

MI-COM

BU5V

P5V

MI-COM

REMO

O-DATA

O-CE

O-CLK

1.8V PRE

476mV274mV

676mV

1695mV

4.5V PRE

896mV

1695mV

Z838W (E)

4.5V PRE

AUX

CHANGER

4.5V PRE 1.8V PRE

3795mV

1512mV

866mV

896mV
274mV

1695mV

QUAL

E'S OUT LEVEL PRE OUT LEVEL

M RST

SW1
SW2
SW3
LO/EJ

M STOP

M SW

MUTE R

MUTE L

KDC-X959 (K)

CHANGER

FM
AM

CD/MD

AUX

AM

FM

CHANGER

AUX

CD/MD

2361mV

722mV

4.5V PRE

4469mV

848mV

1.8V PRE

1481mV

3717mV

1254mV

1781mV

4469mV

GREEN

RED

KS1-KS4

KR1-KR5

F01-F06

WAVE

CE

SC REQ

SC DATA

PANRST

REMO

PANCON

MC REQ

MC CLK

MC DATA

RST
WE

D0-D15
A0-A20
OE
CE
RY
WP

D0-D15

WR

RD

RSTB

RDY

CE

TEST

RS

WE

A0-A20

LBUBCE

OE

D0-D15

P5V

OEL 16V

P5V

OEL PAN 5V

Z738 (E)

CD4.7V

OEL PAN 5V

OEL 16V

CD4.7V

MI-COM

KDC-Z939 (M) KDC-Z939 (M)

KDC-X959 (K)

Z838W (E)

4.5V PRE

Z738 (E)

476mV

676mV

1695mV

KDC-X959 (K)
KDC-Z939 (M)

Z838W (E)

Z738 (E)

4.5V PRE

FCS
FDIN
FDOUT
FCLK

,
,

,

,

251mV (E,M)TYPE

470mV (K)TYPE

215mV

1200mV

1200mV

A8V

KDC-X959/Z939,Z738,Z838W

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TEL [phone] QQ 376315150 892498299

TEL

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139422965

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TEL [phone] QQ 376315150 892498299

BLOCK DIAGRAM

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KDC-X959/Z939,Z738,Z838W

COMPONENT DESCRIPTION

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● SWITCH UNIT (X16-169X-XX)

Ref.No. Component Name Application/Function Operation/Condition/Compatibility

TEL [phone] QQ 376315150 892498299

● ELECTRIC UNIT (X25-927X-XX)

Ref.No. Component Name Application/Function Operation/Condition/Compatibility

TEL

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IC1 SI-3033LSA-TL 3.3V AVR +3.3V Output
IC2 TC74HC4050AFT Buffer 5V → 3.3V logic level shifting
IC3 RS-171 Remote sensor IC
IC4 BA3830F BPF IC BPF for the spectrum analyser indicator
IC5 M25P20 Flush ROM For custom display data of the indicator
IC6 MX23L3213TI109 ROM For display data of the indicator
IC7 IS61LV641615TI SRAM For display data of the indicator
IC8 703107AGJ121 Panel MI-COM.
IC9 TC7WT126FU Buffer 3V → 5V logic level shifting

IC10 TC7SH08F

Q4 DTC123JUA
Q5 DTC123JUA
Q6 CPH3105
Q8

DTC114EUA or UN5111

Q9 DTC123JUA

IC1 UPD703033GFA14 System MI-COM. For KDC-X959/Z939, Z838W
IC1 UPD703033GFA15 System MI-COM. For Z738
IC2 TDA7407 E-VOL. & N.C. MPX
IC3 M5237ML AVR IC
IC4 TDA7560 Power IC

13942296513

IC5 TDA7401
IC6 ICL7660SIBA -9V AVR DC/DC converter, -9V output for pre-output amplifier

IC7 TC74HC02AF Mute logic 2-input NOR x 4

IC8 NJM4565M-TE2 Op. amp.
IC10 NJM4565M-TE2 Op. amp. Amplifier for the front pre-outputs
IC11 NJM4565M-TE2 Op. amp. Amplifier for the non-fader pre-outputs
IC12 NJM4565M-TE2 Op. amp. Amplifier for the rear pre-outputs
IC14 TDA7479D RDS decoder
IC16 S-80837ANNP Reset IC When BU 5V voltage is less than 3.7V, IC outputs Lo.
IC20 BA3121F Isolation amplifier AUX inputs isolation amplifier
IC21 BA3129F Switched op.amp. Input switching with AUX inputs and CD inputs
IC23 SI-8033JD MECHA. AVR
IC24 LT1930A OEL AVR DC/DC converter, +16V output for OEL module
IC25 BR24C02F-W EEPROM

Q1 2SD2375 CD servo AVR AVR for CD mechanism servo operation, +7.5V output.
Q3 2SA1037K SW 5V
Q4 2SA2057 A.+8V AVR

Q5

DTC144EUA or UN5213

Q6

DTA124EUA or UN5112

Q7

DTA124EUA or UN5112

Q8

DTC124EUA or UN5212

Q9 2SB1427 PAN5V SW

Q10 2SA2057
Q11 2SC4081
Q12
Q13
Q14
Q15

DTC124EUA or UN5212
DTA124EUA or UN5112
DTA123JK or KRA105S

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DTC144EUA or UN5213

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AND gate
When a base goes Lo, Q4 is turned on, and key illumination Red is lit.

When a base goes Lo, Q5 is turned on, and key illumination Green is lit.
When Q8's base goes Hi, Q6 is turned on, and OEL 16V power line is
supplied to OEL module.
When a base goes Lo, Q9 is turned on, and key illumination Blue is lit.

IC is combined with Q4, and it works as the error detection, the Q4's driver.

7

3

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HPF(Front/Rear output), LPF, Non-Fader switching and volume function

Amplifier for the spectrum analyser and generation of Vref.(1/2Vcc) voltage

DC/DC converter, +5V output for CD mechanism adapted for MP3/WMA

While a base goes Lo, SW 5V is supplied to the microprocessor
peripheral circuits.
Q4 is combined with IC3, and it works as the power supply of +8.0V output.

When Q8's base goes Hi, Q7 is turned on, and A.+8V AVR, CD servo
AVR and A.+10V AVR are working.
For PAN5V on/off switching. When a base goes Lo with panel attached
to the set, Q9 is turned on, and PAN5V is supplied to the panel.

When Q12's base goes Hi, Q13 is turned on, and OEL/Illumination AVR
is working.
When a base goes Lo, Q14 is turned on, and control pulse signal is outputted.

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When vehicle small lamps turn on, Q15's base goes Hi, and it is turned on.

3

3

WE/WR control signal
generation
Key illumination Red SW
Key illumination Green SW

OEL+B SW
Key illumination Blue SW

High pass filter &
Non-Fader volume

A.+8V AVR SW When Q5's base goes Hi, Q6 is turned on, and A.+8V AVR is working.

SW14V

OEL/Illumination AVR When Q11's base goes Hi, AVR outputs +9V.

OEL/Illumination AVR SW
EXT. AMP CON. SW

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Dimmer detection SW

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TEL [phone] QQ 376315150 892498299

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KDC-X959/Z939,Z738,Z838W

COMPONENT DESCRIPTION

7

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Ref.No. Component Name Application/Function Operation/Condition/Compatibility

Q16 2SB1443
Q17 2SC4081
Q18 2SA1576A
Q19 2SC4081 PRE-AMP -9V AVR
Q20 2SA1576A
Q21 2SC4081
Q22 2SC4081 PRE-AMP +9V AVR
Q23 2SA1576A
Q26 2SB1277(Q,R)
Q29

TEL [phone] QQ 376315150 892498299

Q27 2SA1576A P-CON. protection SW Protect Q26 by turning ON when P-CON output is grounded.
Q28

Q30 2SC4081 BU detection SW When momentary power down has detected, a base goes Lo, and

Q31 2SC4081 ACC detection SW While ACC is applied, a base goes Hi, and Q31 is turned on.
Q32
Q33
Q34 2SC4081

Q35
Q36

Q37
Q38
Q39
Q40
Q41

TEL

Q42
Q43
Q44 CPH3105 the F/E. Works during FM reception mode or RDS reception mode.
Q45
Q46 CPH3105 the F/E. Works during AM reception mode.
Q52

Q101
Q103
Q111 2SB1277(Q,R)

Q112
Q201 2SC4081 BU5V discharge SW

Q305

Q306
Q472

Q473 2SC4081
Q474 2SA2057 Q473 and Q474 are inverted Darlington connection.
Q475 2SC4081
Q476 2SA2057
Q703 2SA2057
Q704 2SC4081 Q703 and Q704 are inverted Darlington connection.

3

DTC114YUA or UN5214

DTA124EUA or UN5112

DTA124EUA or UN5112
DTA124EUA or UN5112

DTC124EUA or UN5212
DTC143TUA or UN5216

DTC143TUA or UN5216
DTC143TUA or UN5216
DTC143TUA or UN5216
DTC143TUA or UN5216
DTC143TUA or UN5216

13942296513

DTC143TUA or UN5216
DTC124EUA or UN5212

DTC124EUA or UN5212

DTC143TUA or UN5216
DTA114YUA or UN5114

DTC124EUA or UN5212

DTC114YUA or UN5214

DTA114YUA or UN5114

DTA114YUA or UN5114
DTC144EUA or UN5213

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A.+10V AVR When Q17's base goes Hi, AVR outputs +10V.

P-CON SW

P-CON. protection inhibit SW

Mute driver for R Ch. When BU detection SW or System RESET or MI-COM.'s MUTE is
Mute driver for L Ch. working, a base goes Lo, and Q32 and Q33 are turned on.
AGC for spectrum analyser

E. VOL. mute SW
Noise buffer

Audio mute SW (Front L)
Audio mute SW (Front R)
Audio mute SW (Non Fader R)
Audio mute SW (Non Fader L)
Audio mute SW (Rear L)
Audio mute SW (Rear R)

FM+B SW

AM+B SW
Composite signai buffer

DSI LED SW
AUX/CD selector SW

P-ANT SW

EJECT LED SW

EJECT LED SW
MECHA. AVR SW
BU 5V AVR

Voltage converter

OEL PAN5V AVR

5

0

Q18 and Q20 work as a differential amplifier, Q19 works as a driver,
and -9.3V is supplied to OP AMP.

Q21and Q22 work as a differential amplifier, Q23 works as a driver,
and +9.7V is supplied to OP AMP.

When Q29's base goes Hi, Q26 is turned on, and P-CON signal is outputted.
Works during POWER ON mode.

Prevents Q27 tuning ON during start-up after power ON.
While BACKUP is applied, a base goes Hi, and Q30 is turned on.

Q30 is turned off.

When BU detection SW or MI-COM.'s mute is working, a base goes

Hi, and Q35 is turned on.

When Q37's base goes Hi, Pre-output is muting.
When Q38's base goes Hi, Pre-output is muting.
When Q39's base goes Hi, Pre-output is muting.
When Q40's base goes Hi, Pre-output is muting.
When Q41's base goes Hi, Pre-output is muting.

Q

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When Q42's base goes Hi, Pre-output is muting.
When Q43's base goes Hi, Q44 is turned on, and A.+8V is supplied to

When Q45's base goes Hi, Q46 is turned on, and A.+8V is supplied to

When a base goes Lo, Q101 is turned on, and DSI illumination LED is lit.
When a base goes Hi, AUX inputs are selected.
When a base goes Lo, CD inputs are selected.
When Q112's base goes Hi, Q111 is turned on, and P-ANT signal is outputted.
Works during FM/AM reception mode or RDS reception mode.
When BU OFF is detected, Q201 is turned on during the base Hi condition.
When a base goes Lo, Q305 is turned on, and EJECT illumination

LED is lit.

When a base goes Lo, Q306 is turned on, and EJECT illumination

LED is lit.
When a base goes Hi, Q472 is turned on, and MECHA. AVR operation stops.
While BACKUP is applied, AVR outputs +5V.

Q475 and Q476 work as voltage coverter for BU 5V AVR, and it output +9V.
While BACKUP is applied, AVR outputs +5V.

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KDC-X959/Z939,Z738,Z838W

MICROCOMPUTER'S TERMINAL DESCRIPTION

7

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● IC8 (SWITCH UNIT: X16-169X-XX)

10-17 D7-D0 I/O

19-21 NC O Not used(N.C.)

23,24 NC I/O Not used(N.C.)

TEL [phone] QQ 376315150 892498299

29-33 KR1-5 I Key return input 1-5

40-43 KS4-1 I/O Key scan output 4-1 Lo: Scan ON, Hi-Z: Scan OFF
44,45 NC O Not used(N.C.)

TEL

54,55 NC O Not used(N.C.)

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Pin No.

Pin Name I/O Description Processing Operation

1-7 D14-D8 I/O

8

PAN3.3VDD

9 VSS - Ground connection terminal Connected to GND lines.

18 MODE2 I Not used(Pull down to GND lines)

22 RSTB_OEL I/O Reset output to OEL Lo: Reset, Hi-Z: Normal operation

25

SRAM_TESTI

26

SRAM_TESTO

27

PAN3.3VDD

28 VSS - Ground connection terminal Connected to GND lines.

34 NC O Not used(N.C.)
35 SRAM_CH O Not used(N.C.)

16V OEL,

36

ILL BLUE

37

PAN3.3VDD
38 VSS - Ground connection terminal Connected to GND lines.
39 NC O Not used(N.C.)

46 NMI I Not used(Connected to GND lines)
47

PAN3.3VDD
48 VSS - Ground connection terminal Connected to GND lines.
49 CE_SD O Data line chip select output to IC9 Hi: SCDATA output enable
50 NC O Not used(N.C.)
51 SCREQ O
52 NC O Not used(N.C.)
53 MCREQ I

56 FCS I/O CS output to the flush ROM IC Lo: Chip select
57 MODE1 I Not used(Pull down to GND lines)
58 MODE0 I Not used(Pull down to GND lines)
59 PARST I Reset input Lo: Reset
60 CKSEL I Clock generator operation mode setting terminal Connected to GND lines.
61 CVDD - Positive power supply connection terminal Connected to 3.3V lines.
62 X2 - Main clock resonator connection terminal
63 X1 I Main clock resonator connection terminal
64 CVSS - Ground connection terminal Connected to GND lines.
65 MCCLK I Clock input from the system MI-COM.
66 MCDATA I Data input from the system MI-COM.
67 SCDATA O Data output to the system MI-COM.
68 FCLK O Write clock output to the flush ROM IC
69 FDATAIN I/O Data input from the flush ROM IC
70 FDATAOUT O Data output to the flush ROM IC
71 AVDD ­72 AVSS - A/D converter ground connection terminal Connected to GND lines.
73 ANI7 I A/D converter analogue input terminal Not used(Connected to GND lines)
74 WAVE IN I Audio input
75 F06 I BPF(10kHz) input
76 F05 I BPF(3.3kHz) input
77 F04 I BPF(1kHz) input
78 F03 I BPF(330Hz) input
79 F02 I BPF(150Hz) input
80 F01 I BPF(63Hz) input
81

13942296513

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PAN3.3VDD

6

- Positive power supply connection terminal Connected to 3.3V lines.

I SRAM test terminal Not used(Pull down to GND lines)

O SRAM test terminal Not used(N.C.)

- Positive power supply connection terminal Connected to 3.3V lines.

I/O LED, OEL AVR ON/OFF control output Hi-Z: AVR OFF, Hi: AVR ON

- Positive power supply connection terminal Connected to 3.3V lines.

- Positive power supply connection terminal Connected to 3.3V lines.

.

xia

- Positive power supply connection terminal Connected to 3.3V lines.

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Data input/output with OEL, SRAM IC and ROM IC

Data input/output with OEL, SRAM IC and ROM IC

Communication request output to the system MI-COM.

Communication request input from the system MI-COM.

A/D converter positive power supply connection terminal

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Lo: Standby, Hi: Request

Hi: Request

Connected to 3.3V lines.

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TEL [phone] QQ 376315150 892498299

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KDC-X959/Z939,Z738,Z838W

MICROCOMPUTER'S TERMINAL DESCRIPTION

7

Q

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Pin No.

82 VSS - Ground connection terminal Connected to GND lines.
83 NC O Not used(N.C.)
84 SARST O Reset output to the BPF IC Hi: Reset
85 REMO I Data input from the remote control light sensor
86 NC I Not used(N.C.)
87 FROM_CH O Not used(N.C.)
88 NC I Not used(N.C.)

89,90 NC O Not used(N.C.)

91 RDY/RY I RDY signal input

92-94 NC O Not used(N.C.)

TEL [phone] QQ 376315150 892498299

95 OE/RD I/O
96 WE/WR I/O Write control output to OEL and SRAM IC Lo: Write, Hi-Z: Other
97 UWE/LWR I/O Write control output to OEL and SRAM IC Lo: Write, Hi-Z: Other
98 PAN3.3VDD - Positive power supply connection terminal Connected to 3.3V lines.

99 VSS - Ground connection terminal Connected to GND lines.
100
101 WP ROM I/O Boot block, Write protect Lo: Write, Hi-Z: Other

102,103

104 CS ROM O CS output to the ROM IC Lo: Chip enable
105 NC O Not used(N.C.)
106 CS RAM O CS output to the SRAM IC Lo: Chip select
107 CS OEL O CS output to OEL Lo: Chip select
108 UBE I/O Bus enable output of D8-D15 Lo: Permission, Hi-Z: Inhibit
109 LBE I/O Bus enable output of D0-D7 Lo: Permission, Hi-Z: Inhibit

110 RED O

TEL

111 GREEN O
112 PAN3.3VDD - Positive power supply connection terminal Connected to 3.3V lines.

113 VSS - Ground connection terminal Connected to GND lines.

114-117
118-123

124 PAN3.3VDD - Positive power supply connection terminal Connected to 3.3V lines.
125 VSS - Ground connection terminal Connected to GND lines.

126-128

129 A11/RS I/O Address bus

130-133

134 PAN3.3VDD - Positive power supply connection terminal Connected to 3.3V lines.
135 VSS - Ground connection terminal Connected to GND lines.

136-142

143 NC I/O Not used(N.C.)
144 D15 I/O

3

Pin Name I/O Description Processing Operation

RESET ROM

NC O Not used(N.C.)

13942296513

NC O Not used(N.C.)
A20-A15 I/O Address bus

A14-A12 I/O Address bus

A10-A7 I/O Address bus

A6-A0 I/O Address bus

6

Read control output to OEL, SRAM IC and ROM IC

I/O Reset output to the ROM IC Lo: Reset, Hi-Z: Normal operation

Illumination red ON/OFF output in case of two colours
/Illumination ON/OFF output in case of one colour
Illumination green ON/OFF output in case of two colours
/Not used in case of one colour /Not used(N.C.) in case of one colour

Data input/output with OEL, SRAM IC and ROM IC

3

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0

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Lo: Read, Hi-Z: Other

Lo: ON, Hi: OFF
Lo: ON, Hi: OFF in case of two colours

1

3

6

5

1

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0

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9

9

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2

4

2

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2

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TEL [phone] QQ 376315150 892498299

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● IC1 (ELECTRIC UNIT: X25-9270-XX)

Pin No.

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Pin Name I/O Description Processing Operation

1 MC DATA I/O Data input/output with the panel MI-COM.
2 MC CLK O Clock output to the panel MI-COM.

3 DSI GUIDE I/O DSI control output

EJECT KEY G

4

5

EJECT KEY R/G

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MC REQ/

6

FLIP DET /Flip detection input /Lo: Panel detected, Hi: Panel attached

O Eject key illumination green control output Lights on at the panel tilted during POWER ON

O Eject key illumination red/green control output

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xia

Communication request output to the panel MI-COM.

I/O

o

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1

6

Lo: DSI ON, Hi-Z: DSI OFF
Lights on at the panel tilted during POWER ON mode.
Flashing at the panel detached during POWER ON mode.
Lo: ON, Hi-Z: OFF

mode in case of the key illumination green.
Lo: ON, H-Z: OFF
Lights on at the panel tilted during POWER ON mode.

3

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Hi: Request

m

KDC-X959/Z939,Z738,Z838W

MICROCOMPUTER'S TERMINAL DESCRIPTION

7

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Pin No.

TEL [phone] QQ 376315150 892498299

TEL

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Pin Name I/O Description Processing Operation

7 IC2 SDA I/O Data input/output with IC2, IC5, and IC25
8 IC2 SCL I/O Clock input/output with IC2, IC5, and IC25

9 EVDD - Positive power supply connection terminal Connected to BU 5V lines.
10 EVSS - Ground connection terminal Connected to GND lines.
11

PAN RESET
12 BEEP O BEEP output
13 REMO I Data input from the wired remote control
14 SVR O SVR output Not used(N.C.)
15 DIMMER I Small lights detection input Lo: During vehicle small lamps turn on
16 PLL DATA I/O Data input/output with F/E
17 PLL CLK I/O Clock input/output with F/E
18 P-STBY O POWER IC STBY output

19 P-CON I/O P-CON output

20 ANT-CON O ANT-CON output
21 TEST - Test terminal Not used(Connected to GND lines)
22 P MUTE O POWER IC mute output

23 PAN5V I/O Panel 5V control output

24

EXT-AMP-CON

25

CD MECHA+B
26 EMUTE O Not used(N.C.)
27 BU DET I Momentary power down detection input
28 ACC DET I ACC detection terminal Lo: ACC ON, Hi: ACC OFF

29 SW5V I/O SW5V control terminal Lo: SW5V ON, Hi-Z: SW5V OFF
30 MUTE I/O MUTE output Lo: Muting OFF, Hi-Z: Muting ON
31 O CE I/O External display CE terminal
32 O CLK I/O External display clock terminal
33 O DATA I/O External display data terminal
34 RESET I Reset input Lo: System reset, Hi: Normal operation
35 XT1 I Sub clock resonator connection terminal Clock count during POWER OFF mode
36 XT2 - Sub clock resonator connection terminal

37 REGC -

38 X2 - Main clock resonator connection terminal
39 X1 I Main clock resonator connection terminal

40 VSS - Ground connection terminal Connected to GND lines.
41 VDD - Positive power supply connection terminal Connected to BU 5V lines.
42 CLKOUT O Internal system clock output Not used(N.C.)
43 NC O Not used(N.C.)
44 E2PDET I EEPROM detection input Lo: No EEPROM, Hi: With EEPROM

45

46

47 DSP DATA O Data output to DSP IC Not used(N.C.)
48
49 DSP CLK O Clock output to DSP IC Not used(N.C.)

13942296513

PRE MUTE L

PRE MUTE R

DSP LATCH

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O Reset output to the panel MI-COM. Lo: Reset or Momentary power down detected

O External amp. control output (in 200msec) Bass boost LOW__Hi: 130msec, Lo: 70msec

I/O CD4.7V ON/OFF output

O Pre-out muting L Ch. control output

O Pre-out muting R Ch. control output

O Latch output to DSP IC Not used(N.C.)

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1

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0

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7

3

3

Capacitor connection terminal for regulator inside
microprocessor

o

4

2

9

8

Lo: Power IC OFF, Hi: Power IC ON or ALL OFF mode
Hi-Z: POWER OFF mode or ALL OFF mode, Hi:
POWER ON mode
Hi: During TUNER mode or last FM mode with
RDS/RBDS model

Lo: Muting during POWER OFF mode, ALL OFF
mode and TEL MUTE ON
Lo: Panel attached normally, Hi-Z: Panel detached
or tilted
Bass boost OFF__Hi: 160msec, Lo: 40msec

Bass boost HI__ Hi: 100msec, Lo: 100msec
Lo: During CD source selected, Hi-Z: Except CD
source selected

0

5

1

5

1

3

6

Lo: BU ON, Hi: When momentary power down
detected or BU OFF

Oscillation: POWER ON mode, Oscillation stop: POWER
OFF mode or momentary power down detected

Lo: When M MUTE L input is Lo during CD source
selected or Momentary power down detected, Hi:
Fix in the case of 2 zone mode
Lo: When M MUTE R input is Lo during CD source
selected or Momentary power down detected, Hi:
Fix in the case of 2 zone mode

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9

TEL [phone] QQ 376315150 892498299

7

KDC-X959/Z939,Z738,Z838W

MICROCOMPUTER'S TERMINAL DESCRIPTION

7

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Pin No.

50 AFS O Noise detection time constant switching terminal

51 AM+B I/O AM+B control Hi: During AM reception
52 FM+B I/O FM+B control

53 R QUAL I Quality input from the RDS decoder IC

54 R DATA I Data input from the RDS decoder IC

TEL [phone] QQ 376315150 892498299

55 IC2TYPE0 I IC2 setting terminal Lo: Initial value(default)
56 IC2TYPE1 I IC2 setting terminal Lo: Initial value(default)
57 P ON I/O SW 14V control output Hi-Z: POWER OFF mode, Hi: POWER ON mode
58 BVDD - Positive power supply connection terminal Connected to BU 5V lines.
59 BVSS - Ground connection terminal Connected to GND lines.
60 TYPE0 I Destination type selection terminal 0
61 TYPE1 I Destination type selection terminal 1
62 TYPE2 I Destination type selection terminal 2
63 TYPE3 I Destination type selection terminal 3
64 AUX SW O CD/AUX input switching output Lo: Except AUX input, Hi: AUX input
65 ILL ON I/O OEL/Illumination AVR ON/OFF control output Hi-Z: AVR OFF, Hi: AVR ON
66 MOSW O CD mechanism loading motor control output Hi: CD loading/eject action or Break, Lo: Other
67 LO/EJ I/O CD mechanism loading/Eject switching output Lo: Loading, Hi: Eject, Hi-Z: Stop or Break
68 M STOP O Stop request to CD mechanism MI-COM. Lo: Stop mode, Hi: Operation mode
69 M RST O Reset output to CD mechanism MI-COM. Lo: Reset
70 CH CON O Changer control Lo: Standby mode, Hi: Operation mode
71 CH RST O Reset output to changers : Reset

TEL

72 CH REQH O Request output to changers Lo: Request
73 AVCONT O A/D converter reference voltage control output Hi: Active, Connected to AVREF terminal
74 AVDD ­75 AVSS - A/D converter ground connection terminal Connected to GND lines.
76 AVREF I A/D converter reference voltage input terminal
77 IFC OUT I F/E IFC OUT input terminal Hi: Station detected (Vth=2.5V)
78 S METER I S-meter input from F/E
79 NOISE I FM noise detection input

80,81 NC I Not used(Pull down to GND lines)

82 CD SW2 I 12cm disc detection SW input Lo: 12cm disc detected
83 M MUTE R I
84 M MUTE L I
85 CD SW3 I Down & limit switch detection input Hi: Chucking, Hi → Lo: Pickup most inner position
86 PANEL DET I Panel detection input Lo: Panel attached, Hi: Panel detached
87 CH MUTE I Mute request from changers Hi: Mute request
88 PHONE I PHONE detection input
89 SC CON O Control output to the panel MI-COM. Hi: Operation mode
90 SOURCE I/O SOURCE key detection input Lo: When SOURCE key is pressed
91 CD SW1 I Loading SW detection input Lo: Loading start
92 CD SW4 I/O 8cm disc detection SW input Not used(N.C.)

93 R CLK I Clock input from the RDS decoder IC
94 CH REQC I Communication request input from changers Lo: Request

95 EJECT I EJECT key detection input Lo: When EJECT key is pressed
96 SC REQ I
97 CH DATAC I Data input from changers
98 CH DATAH O Data output to changers
99 CH CLK I/O Clock input/output with changers

100 SC DATA I Data input from the panel MI-COM.

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Pin Name I/O Description Processing Operation

13942296513

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6

A/D converter positive power supply connection terminal

Mute request (R Ch.) from CD mechanism MI-COM.
Mute request (L Ch.) from CD mechanism MI-COM.

Communication request input from the panel MI-COM.

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xia

3

1

5

o

1

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5

u

0

Q

Q

1

3

6

7

3

4

2

9

8

Lo: During FM seek or AF search, Hi: During FM
reception, Hi: During last FM mode with RDS/
RDBS model

Hi: During FM reception, Hi: During last FM mode
with RDS/RDBS model
Except RDS, RBDS model: Not used(pull down to
GND lines)
Except RDS, RBDS model: Not used(pull down to
GND lines)

0

5

1

5

1

3

6

Connected to BU 5V lines.

Lo: Mute request
Lo: Mute request

1V or less: TEL MUTE, 2.5V or greater: NAVI MUTE

Except RDS, RBDS model: Not used(pull down to
GND lines)

Hi: Request

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2

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4

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9

8

9

2

9

9

TEL [phone] QQ 376315150 892498299

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