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– 51 –

Pin No.

Pin Name

I/O

Function

32

LCD INH

O

Blank indicate control signal output to the liquid crystal display driver (IC900)    “L”: no display

33

VSS

—

Ground terminal

34

C

—

Connected to coupling capacitor for the power supply

35

AD-ON

O

A/D converter power control signal output terminal
When the KEYACK (pin &§) that controls reference voltage power for key A/D conversion input 
is active, “L” is output from this terminal to enable the input

36

RE-IN0

I

37

RE-IN1

I

38

DVCC

—

Power supply terminal (+5V) (for D/A converter)

39

DVSS

—

Ground terminal (for D/A converter)

40

—

I

Not used (fixed at “L”)

41

LCDANG

O

View field angle control signal is output when front panel is fully opened
“H”: front panel is fully opened

42

AVCC

—

Power supply terminal (+5V) (for A/D converter)

43

AVRH

I

Reference voltage (+5V) input terminal (for A/D converter)

44

AVRL

I

Reference voltage (0V) input terminal (for A/D converter)

45

AVSS

—

Ground terminal (for A/D converter)

46

KEYIN0

I

Key input terminal (A/D input) (LSW900, S900, LSW901 to LSW908)    OFF, SEEK/AMS + 
+ )  = 0 – , MODE  *, SOURCE, SOUND, DSPL, SHIFT, 1, 2, 3 keys input

47

KEYIN1

I

Key input terminal (A/D input) (SW801, LSW909, LSW912 to LSW918)
6, LIST, 10, 9, 8, 7, 6, 5, 4 keys input

48

RC-IN0

I

Rotary remote commander key input terminal (A/D input)

49

DSTSEL0

I

Destination setting terminal (fixed at “L”)

50

DSTSEL1

I

Destination setting terminal (fixed at “H”)

51

DSTSEL2

I

Destination setting terminal
(US model: fixed at 3/4 voltage, E model: frequency select switch input)

52

MTP

I

Multi-path detection signal input from the RDS decoder    Not used (open)

53

VSM

I

FM and AM signal meter voltage detection input from the FM/AM tuner unit (TUX10)
(A/D input)

54

VCC

—

Power supply terminal (+5V)

55

RAMBU

I

Internal RAM reset detection signal input from the RN5VD33AA (IC501)
Input terminal to check that RAM data are not destroyed due to low voltage
This checking is made within 100 msec after reset

56

POWSEL

I

Power select switch (S600) input terminal    “L”: off (halt mode), “H”: on (operation mode)

57

EQ-SEL

I

Not used (fixed at “H”)

58

TESTIN

I

Setting terminal for the test mode    “L”: test mode, Normally: fixed at “H”

59

PACK-IND

O

LED drive signal output of the tape window illumination and 

6 indicators (LED800, 802)

“H”: LED on    “H” is output to turn on LED when front panel is opened

60

TIR-PLAY

O

AM/TIR selection signal output terminal    “L”: AM signal, “H”: TIR signal
Not used (pull down)

61

SUB-SW1

O

Sub woofer output cut-off frequency select signal output terminal

62

SUB-SW0

O

Sub woofer output cut-off frequency select signal output terminal

63

VSS

—

Ground terminal

64

VOLCE

O

Chip enable signal output to the main electrical volume (IC301)    “H”: active

65

MUTE

O

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

66

VOLSO/       

SUBSO

O

Serial data output to the main electrical volume (IC301) and sub electrical volume (IC350)

67

VOLCKO/      

SUBCKO

O

Serial data transfer clock signal output to the main electrical volume (IC301) and sub electrical 
volume (IC350)

Dial pulse input of the rotary encoder (RE900)
 (for VOLUME/BASS/TREBLE/BALANCE/FADER control)

– 52 –

Pin No.

Pin Name

I/O

Function

68

SUBCE

O

Chip enable signal output to the sub electrical volume (IC350)    “H” active

69

FLASH-W

I

Internal flash memory data write mode detection signal input terminal    “L”: data write mode
Not used (fixed at “H” in this set)

70

IIC SIO

I/O

Two-way data bus with the external device    Not sued (fixed at “H”)

71

IIC CKO

O

Bus clock signal output to the external device    Not sued (pull-up)

72

RC-IN1

I

Rotary remote commander shift key input terminal    “L”: shift

73

X1A

O

Sub system clock output terminal (32.768 kHz)

74

X0A

I

Sub system clock input terminal (32.768 kHz)

75

DAVN

I

Data transmit completed detect signal input from the RDS decoder    “H” active
Not sued (open)

76

KEYACK

I

Input of acknowledge signal for the key entry    Acknowledge signal is input to accept function 
and eject keys in the power off status    On at input of “H”

77

BU-IN

I

Battery detect signal input from the SONY bus interface (IC602) and battery detect circuit
“L” is input at low voltage

78

ILL IN

I

Auto dimmer control illumination line detection signal input terminal
“L” is input at dimmer detection

79

TEL-ATT

I

Telephone muting signal input terminal    At input of “H”, the signal is attenuated by –20 dB

80

NOSESW

I

Front panel block remove/attach detection switch (SW500) input terminal
“L”: front panel is attached

81

ACC IN

I

Accessory detect signal input terminal    “L”: accessory on

82 to 85

TIR-D0 to TIR-D3

I/O

Two-way data bus with the external device    Not used (open)

86

HSTX

I

Hardware standby input terminal    “L”: hardware standby mode    Reset signal input in this set

87

MD2

I

Setting terminal for the CPU operational mode (fixed at “L” in this set)

88

MD1

I

Setting terminal for the CPU operational mode (fixed at “H” in this set)

89

MD0

I

Setting terminal for the CPU operational mode (fixed at “H” in this set)

90

RESET

I

System reset signal input from the reset signal generator (IC500) and reset switch (SW800)
“L”: reset    “L” is input for several 100 msec after power on, then it changes to “H”

91

VSS

—

Ground terminal

92

X0

I

Main system clock input terminal (3.68 MHz)

93

X1

O

Main system clock output terminal (3.68 MHz)

94

VCC

—

Power supply terminal (+5V)

95

TIR-BUSY

I

Busy detection signal input from the external device    Not used (fixed at “L”)

96

TIR-WR

O

Data write strobe signal output to the external device    Not used (open)

97

TIR-CE0

O

Chip enable signal output to the external device    Not used (open)

98

TIR-CE1

O

Chip enable signal output to the external device    Not used (open)

99

TIR-RES

O

Reset signal output to the external device    “H”: reset    Not used (open)

100

TIR-PDOWN

O

Power down control signal output to the external device    “L”: power down    Not used (open)

101

TIR-RD

O

Data read strobe signal output to the external device    Not used (open)

102

MTLIN

I

Metal detection signal input terminal    “L”: normal position, “H”: metal position

103

AMSIN

I

Whether a music is present or not from CXA2510AQ (IC250) is detected at auto music sensor
“L”: music is present, “H”: music is not present

104

REEL

I

Rotation detect signal input from supply reel sensor and take-up reel sensor on the deck 
mechanism

105

POS0

I

106

POS1

I

107

POS2

I

108

POS3

I

109

LM-EJ

O

Motor drive signal output to the loading/tape operation motor drive (IC201)    “H” active
(For the eject direction and reverse side operation)    *1

Tape position (EJECT/FF/REW/
REV/FWD mode) detect input from 
the tape operation switch on the deck 
mechanism

POS0: “L”: EJECT mode, “H”: others mode
POS1: “L”: FF and FWD mode, “H”: others mode
POS2: “L”: REW mode, “H”: others mode
POS3: “L”: REV and EJECT mode, “H”: others mode

– 53 –

Pin No.

Pin Name

I/O

Function

110

LM-LOD

O

Motor drive signal output to the loading/tape operation motor drive (IC201)    “H” active
(For the loading direction and forward side operation)    *1

111

CM-ON

O

Capstan/reel motor (M901) drive signal output terminal    “H”: motor on

112

TAPEON

O

Tape system power supply on/off control signal output terminal    “H”: tape on

113

N-ROUT

O

Forward/reverse direction control signal output to the CXA2510AQ (IC250)
“L”: forward direction, “H”: reverse direction

114

AMSON

O

Tape auto music sensor control signal output to the CXA2510AQ (IC250)
“L” is output to lower the gain for audio level at FF/REW mode

115

DOLBC

O

Standby on/off control signal output to the power amplifier (IC700)
“L”: standby mode, “H”: amp on

116

DOLBY

I/O

Dolby control in/out terminal
At initial mode: valid/invalid selection input of dolby function (valid at “L” input)
At normal mode: dolby on/off control signal output to the CXA2510AQ (IC250)
(dolby on at “H” output)

117

CSV-NAR

I

“H” is input when CSV (IC650) sends data

118

LEDON

O

Power supply on/off control signal output of the illumination LED    “H”: power on

119

VSS

—

Ground terminal

120

POWON

O

Main system power supply on/off control signal output to the BA3918 (IC502)    “H”: power on

*1  Loading/tape operation motor control

STOP

LOADING/

FORWARD

EJECT/

REVERSE

BRAKE

LM-LOD (pin `⁄⁄‚)

“L”

“H”

“L”

“H”

LM-EJ (pin `⁄‚·)

“L”

“L”

“H”

“H”

Mode

Terminal

– 54 –

• 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 and

packing materials 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

3-022-310-01 COLLAR

2

X-3375-093-3 PANEL ASSY, SUB

3

3-022-338-01 BUTTON (EJECT) (

6)

* 4

1-669-656-12 SUB BOARD

5

X-3375-068-1 LOCK ASSY

* 6

3-022-312-01 INSULATED PLATE

7

3-935-003-01 SPRING (C DOOR), TORSION

8

3-027-799-11 DOOR, CASSETTE

9

3-713-786-51 SCREW +P 2X3

10

3-953-235-01 DAMPER, OIL

11

3-341-752-11 WASHER, POLYETHYLENE

12

3-011-170-01 GEAR (HOLDER)

13

X-3375-066-2 BRACKET (GEAR) ASSY

* 14

3-022-316-01 COVER

15

3-919-171-01 SCREW (2.6X6) (C TIGHT)

16

3-915-923-01 SCREW, GROUND POINT

* 17

A-3317-477-A MAIN BOARD, COMPLETE (US)

* 17

A-3317-497-A MAIN BOARD, COMPLETE (E)

* 18

3-011-078-01 BRACKET (POWER IC)

* 19

3-022-317-01 BRACKET (AMP)

* 20

3-022-306-01 HEAT SINK

* 21

3-355-209-01 PLATE (B), GROUND

22

1-776-207-72 CORD (WITH CONNECTOR) (POWER)

* 23

3-023-774-01 PLATE (LOCK), GROUND

24

3-937-282-03 CASE (UPPER)

* 25

3-938-138-01 SHEET (E)

26

A-3313-646-A INVERTER BOARD, COMPLETE

27

1-783-495-11 CORD (WITH CONNECTOR) (EL)

28

3-937-812-03 CASE (LOWER)

29

1-777-246-11 CORD (WITH CONNECTOR) (ANT)

* 30

X-3375-081-1 CHASSIS ASSY

* 31

3-025-352-01 PLATE (INV), SHIELD

F701

1-532-877-11 FUSE (BLADE TYPE) (AUTO FUSE) (10A)

* LUG1

1-537-738-21 TERMINAL, EARTH

Front panel section

#1

#1

MG-25D-136

not 
supplied

F701

#2

#3

#3

#3

#3

#3

#3

#3

#3

A

A

B

B

#2

#2

not 
supplied

not 
supplied

LUG1