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30

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Pin No.

Pin Name

I/O

Description

1

ESPSEL

I

ESP on/off setting terminal    Not used (fixed at “L”)

2

ML

O

Normal/high speed playback control signal output terminal    “L”: high speed playback
Not used (open)

3

EMPHO

O

Emphasis signal output terminal    Not used (open)

4

AMUTE

O

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

5

CDXLT

O

Serial data latch pulse signal output to the CXD2598Q (IC101)

6

CDDATA

O

Serial data output to the CXD2598Q (IC101)

7

CDCLK

O

Serial data transfer clock signal output to the CXD2598Q (IC101)

8

CDON

O

D/A converter and servo section power supply on/off control signal output    “H”: power on

9

ELVON

O

Mechanism deck section power supply on/off control signal output    “H”: power on

10

DOUTSEL

I

Digital output on/off control signal input terminal     “L”: digital output on    Not used (open)

11

NC

—

Not used (open)

12

RAMWE

O

Data write enable signal output to the S-RAM     “L”: active     Not used (open)

13 to 20

RAMIO8 to

RAMIO1

I/O

Two-way data bus with the S-RAM    Not used (open)

21 to 28

RAMA7 to

RAMA0

O

Address signal output to the S-RAM    Not used (open)

29

NC

—

Not used (open)

30 to 36

RAMA14 to

RAMA8

O

Address signal output to the S-RAM    Not used (open)

37

RAMCS

O

Chip select signal output to the S-RAM    “L”: active    Not used (open)

38

RESET

I

System reset signal input from the SONY bus interface (IC302) and reset signal generator (IC303)
“L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”

39

GND

—

Ground terminal

40

XTAL

O

Main system clock output terminal (12 MHz)

41

EXTAL

I

Main system clock input terminal (12 MHz)

42

TEXTSEL

I

CD text mode setting terminal    “L”: CD text on, “H”: does not display track name
Not used (open)

43

SI

I

Serial data input from the SONY bus interface (IC302)

44

SO

O

Serial data output to the SONY bus interface (IC302)

45

SCLK

I

Serial data transfer clock signal input from the SONY bus interface (IC302)

46

CFSEL

I

Custom file on/off setting terminal    “L” custom file on    Not used (open)

47

EEINIT

I

Initialize signal input for the EEPROM    “H”: format    Not used (open)

48

EEDATA

I/O

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

49

EECLK

O

Serial data transfer clock signal output to the EEPROM    Not used (open)

50

VSS

—

Ground terminal (for A/D converter)

51

AVREF

I

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

52

VDD

—

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

53

SINGLE

I

Setting terminal for the single disc/multiple discs mode
“L”: single mode, “H”: multiple discs mode    Fixed at “H” in this set (open)

54

LDON

O

The laser automatic power control on/off signal output    “H”: automatic power control on

55

AGCHOLD

O

RF AGC hold on/off signal output    “H”: hold

56

RFAGC

I/O

RF AGC level control signal output    “L”: off, center voltage: 40%, “H”: 60%

57

AD

I

A/D input terminal    Not used (open)

58

AD

I

A/D input terminal    Not used (fixed at “L”)

31

Pin No.

Pin Name

I/O

Description

59

EHS

I

Elevator height position detect input from the RV202 (elevator height sensor) (A/D input)

60

MCK

I

Input of signal for the fine adjustment (elevator height (address) adjustment; RV201) of elevator
position (A/D input)

61

NC

—

Not used (open)

62

BUSON

I

Bus on/off control signal input from the SONY bus interface (IC302)    “H” bus on

63

EJECT

I

Eject switch (SW801) input terminal    “H” active

64

MAGSW

I

Magazine in/out detect switch input terminal    Not used (open)

65

LOAD1

I

Chucking end detect switch (SW1) input terminal
“L”: When completion of the disc chucking operation

66

LOAD2

I

Save end detect switch (SW2) input terminal
“L”: When completion of the disc save operation

67 to 70

NC

—

Not used (open)

71

CH.F

O

Motor drive signal (save direction) output to the chucking motor drive (IC201)
“L” active    *1

72

CH.R

O

Motor drive signal (chucking direction) output to the chucking motor drive (IC201)
“L” active    *1

73

ELVR

O

Motor drive signal (elevator down direction) output to the elevator motor drive (IC301)
“L” active    *2

74

ELVF

O

Motor drive signal (elevator up direction) output to the elevator motor drive (IC301)
“L” active    *2

75

BUCHK

I

Battery detect signal input terminal    “H”: battery on

76

MGLK

I

Magazine detect switch (SW201) input    “L”: magazine is set

77

SQSO

O

Subcode Q/text serial data output to the CXD2598Q (IC101)

78

NC

—

Not used (open)

79

SQCK

O

Subcode Q/text serial data transfer clock signal output to the CXD2598Q (IC101)

80

GRSCOR

I

Subcode sync (S0+S1) detection signal input terminal    Not used (open)

81

NC

—

Not used (open)

82

SCOR

I

Subcode sync (S0+S1) detection signal input from the CXD2598Q (IC101)

83 to 85

NC

—

Not used (open)

86

VSS

—

Ground terminal

87

VDD

—

Power supply terminal (+5V)

88

NC

—

Not used (open)

89

LIMSW

I

Sled limit in detect switch (SW3) input terminal
“L”: When the optical pick-up is inner position

90

FOK

I

Focus OK signal input from the CXD2598Q (IC101)    “H” is input when focus is on (“L”: NG)

91

GFS

I

Guard frame sync signal input from the CXD2598Q (IC101)    “L”: NG, “H”: OK

92

SCLK

O

Serial data transfer clock signal output to the CXD2598Q (IC101)

93

SENS

I

Internal status signal (sense signal) input from the CXD2598Q (IC101)

94

XRST

O

System reset signal output to the CXD2598Q (IC101)    “L”: reset

95

NC

—

Not used (open)

96

ESPXQOK

O

Subcode Q OK pulse signal output terminal    “L”: active    Not used (open)

97

SDTO

I

ESP status signal input terminal    Not used (open)

98

XSOE

O

ESP status read enable signal output terminal    “L”: active    Not used (open)

99

ESPXRDE

O

ESP read enable signal output terminal    “L”: active    Not used (open)

100

ESPXWRE

O

ESP write enable signal output terminal    “L”: active    Not used (open)

32

*2  elevator motor (M104) control

STOP

ELEVATOR

UP

ELEVATOR

DOWN

BRAKE

ELVF (pin uf)

“H”

“L”

“H”

“L”

ELVR (pin ud)

“H”

“H”

“L”

“L”

Mode

Terminal

*1  chucking motor (M103) control

STOP

LOAD

CHUCKING

SAVE

BRAKE

CH.F (pin ua)

“H”

“H”

“L”

“L”

CH.R (pin us)

“H”

“L”

“H”

“L”

Mode

Terminal

33

Les composants identifiés par une
marque 0 sont critiquens pour la
sécurité.
Ne les remplacer que par une pièce
portant le numéro spécifié.

The components identified by
mark 0 or dotted line with mark

0 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 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

3-047-852-01 DAMPER (T)

* 2

3-045-543-01 CASE (LOWER. T)

* 3

3-024-065-01 CUSHION (EJECT-T)

4

X-3375-357-1 ARM (FLT) ASSY

* 5

1-675-515-11 JACK BOARD

6

3-376-464-11 SCREW (+PTT 2.6X6), GROUND POINT

* 7

A-3294-822-A MAIN BOARD, COMPLETE

8

1-676-340-11 JACK FLEXIBLE BOARD

9

1-676-339-11 MAIN FLEXIBLE BOARD

* 10

1-675-516-11 SWITCH BOARD

12

X-3379-707-1 DOOR (L) ASSY (646)

12

X-3380-045-1 DOOR (L) ASSY (646X)

13

3-224-392-01 PANEL (L), FRONT (646)

13

3-224-392-31 PANEL (L), FRONT (646X)

14

3-022-007-01 BUTTON (EJT) (Z)

15

3-041-218-21 ESCUTCHEON (T)

* 16

3-022-012-01 HEAT SINK (T)

17

3-042-244-11 SCREW (T)

18

3-038-166-01 SPRING (FL), TENSION COIL

19

3-047-886-11 LEVER (FLT. 838)

* 20

3-046-160-01 CASE (UPPER. T)

22

3-935-636-11 SCREW (FP)

23

X-3375-360-1 ARM (FRT) ASSY

RV202

1-227-137-11 RES, VAR, SLIDE 10K

(ELEVATOR HEIGHT SENSOR)

#2

#3

#2

#2

#2

MG-251A-137

RV202

#3

#3

not supplied

not supplied

not supplied

B

A

#2

A

B