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– 49 –

•

Pin No.

Pin Name

I/O

Description

1

C-SCOR

I

Subcode sync (S0+S1) detection signal input from the CXD2589Q (IC703)

2

RMC

I

Sircs remote control signal input terminal    Not used (open)

3, 4

NC

O

Not used (open)

5

C-SENS

I

Internal status signal (sense signal) input from the CXD2589Q (IC703)

6

C-SENS2

I

Internal status signal (sense signal) input from the CXA1992BR (IC701)

7

C-SQCK

O

Subcode Q data reading clock signal output to the CXD2589Q (IC703)

8

C-SQSO

I

Subcode Q data input from the CXD2589Q (IC703)

9

C-RST

O

System reset signal output to the CXA1992BR (IC701) and CXD2589Q (IC703)    “L”: reset

10

C-CLOCK

O

Serial data transfer clock signal output to the CXD2589Q (IC703)

11

C-LATCH

O

Serial data latch pulse signal output to the CXD2589Q (IC703)

12

C-DATA

O

Serial data output to the CXD2589Q (IC703)

13

REC

I

Record/playback detection signal input terminal    “L”: recording mode, “H”: playback mode

14

R-COUNT

I

PLL serial data input from the FM/AM PLL (IC2)

15

R-DATA

O

PLL serial data output to the FM/AM PLL (IC2)

16

R-CLOCK

O

PLL serial data transfer clock signal output to the FM/AM PLL (IC2)

17

R-LATCH

O

PLL serial data latch pulse signal output to the FM/AM PLL (IC2)

18

V-LATCH

O

Serial data latch pulse signal output to the electrical volume (IC302)

19

V-DATA

O

Serial data output to the electrical volume (IC302)

20

V-CLOCK

O

Serial data transfer clock signal output to the electrical volume (IC302)

21

P-CON

O

Power on/off control signal output to the power supply circuit and power amplifier (IC303 and 
IC304)    “L”: standby mode, “H”: power on

22

NC

O

Not used (open)

23

KEY1

I

Key input terminal (A/D input)    S601 to S607 (OPERATE, SLEEP, TIMER, MEGA BASS, 
VOLUME +/–, SOUND keys input)

24

KEY2

I

Key input terminal (A/D input)
S609 to S614 (CD 

·∏, π, TIME SET + + TUNE +, TIME SET – = TUNE –, PLAY 

MODE MONO/ST ISS, DISPLAY ENT MEMORY keys input)

25

KEY3

I

Key input terminal (A/D input)    S617 to S624 (RADIO BAND, STANDBY, CLOCK, PRESET 
+/–, FUNCTION, LOOP AUTO PRESET, FLASH keys input)

26

NC

O

Not used (open)

27

INIT

O

Initial setting signal output terminal

28

MODE CHECK

I

Destination setting terminal

29

SHIFT CLOCK

O

Shift clock output of the main system clock (4.19 MHz)    “H” active

30

RST

I

System reset signal input from the reset signal generator (IC503)    “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”

31

EXTAL

I

Main system clock input terminal (4.19 MHz)

32

XTAL

O

Main system clock output terminal (4.19 MHz)

33

VSS

—

Ground terminal

34

VL

—

35 to 37

VLC3 to VLC1

—

38 to 41

COM0 to COM3

O

Common drive signal output to the liquid crystal display (LCD501)

42 to 64

SEG0 to SEG22

O

Segment drive signal output to the liquid crystal display (LCD501)

65

NC

O

Not used (open)

66

A-MUTE

O

Audio muting on/off control signal output to the electrical volume (IC302)    “H”: muting on

67

B-MUTE

O

Tuner muting on/off control signal output terminal    “H”: muting on

68

C-MUTE

O

Digital muting on/off control signal output to the CXD2589Q (IC703)    “H”: muting on

Terminal for doubler circuit capacitor connection to develop liquid crystal display drive voltage

– 50 –

Pin No.

Pin Name

I/O

Description

69

TAPE

O

Tape function control signal output to the TA2068N (IC301)
“L”: radio or CD on, “H”: tape on

70

RADIO

O

Power on/off control signal output for the radio +6V power supply    “H”: radio power on

71

CD

O

Power on/off control signal output for the CD +5V power supply    “L”: CD power on

72

VDD

—

Power supply terminal (+5V)

73

TX

O

Sub system clock output terminal (32.768 kHz)

74

TEX

I

Sub system clock input terminal (32.768 kHz)

75

NC

O

Not used (open)

76

ISS1

O

ISS 1 on/off control signal output terminal    “H”: ISS 1 on    Not used (open)

77

ISS2

O

ISS 2 on/off control signal output terminal    “H”: ISS 2 on    Not used (open)

78

C-DOOR

I

CD lid open/close detection switch (S501) input terminal    “L”: CD lid is closed

79

TC-PLAY

I

Tape play detection switch (S303) input terminal    “L”: tape play mode

80

REG CHK

I

Regulator check signal input of the AC input or battery input    “H” active

– 51 –

The components identified by
mark 

! or dotted line with mark

! are critical for safety.

Replace only with part number
specified.

• Items marked “*” are not stocked since they

are seldom required for routine service. Some
delay should be anticipated when ordering
these items.

• The mechanical parts with no reference num-

ber in the exploded views are not supplied.

• Hardware (# mark) list and accessories are

given in the last of the electrical parts list.

NOTE:

• -XX and -X mean standardized parts, so they

may have some difference from the original
one.

• Color Indication of Appearance Parts

Example:
KNOB, BALANCE (WHITE) . . . (RED)

↑

↑

Parts Color Cabinet's Color

Ref. No.

Part No.

Description

Remark

Ref. No.

Part No.

Description

Remark

1

3-032-033-11 WINDOW (LCD)

2

X-3376-915-1 GRILLE ASSY (L), SPK

3

X-3376-918-1 GRILLE ASSY (R), SPK

4

4-212-330-01 BUSHING

5

X-3377-358-1 CABINET ASSY, FRONT (US)

5

X-3377-646-1 CABINET ASSY, FRONT (E)

6

3-032-032-01 BUTTON (MAIN)

* 7

A-3323-202-A CONTROL BOARD, COMPLETE

8

1-790-377-11 WIRE (FLAT TYPE) (6 CORE)

9

4-951-620-11 SCREW (2.6X10), +BVTP

10

3-926-244-91 LID, BATTERY CASE

* 11

1-672-388-11 HEADPHONE BOARD

12

3-921-725-01 SCREW (2.6X10), +PWH

SP301

1-529-185-11 SPEAKER (10cm) (L-CH)

SP302

1-529-185-11 SPEAKER (10cm) (R-CH)

– 52 –

Ref. No.

Part No.

Description

Remark

Ref. No.

Part No.

Description

Remark

The components identified by mark 

! or dotted

line with mark 

! are critical for safety.

Replace only with part number specified.

#1

#1

#1

#1

#1

#1

#1

#1

T901

ANT1

#1

#5

not supplied

* 51

A-3321-755-A SECONDARY BOARD, COMPLETE

* 52

1-672-384-11 PRIMARY BOARD

* 53

A-3321-748-A TUNER BOARD, COMPLETE

54

3-032-038-01 TERMINAL, ANTENNA

55

3-032-025-71 CABINET (REAR) (US)

55

3-032-025-91 CABINET (REAR) (E)

* 56

1-672-386-11 BATTERY BOARD

57

3-028-154-01 TERMINAL (–), BATTERY

58

3-028-156-01 TERMINAL (S) (–), BATTERY

* 59

1-672-387-11 BATTERY COMMON BOARD

60

3-032-029-01 HANDLE

61

3-028-157-01 TERMINAL (S) (+.–), BATT

62

4-960-167-01 SCREW (3X8) (DIA. 10), +WH

ANT1

1-501-891-41 ANTENNA, TELESCOPIC (FM)

! T901

1-433-638-11 TRANSFORMER, POWER