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– 49 –

•

Pin No.

Pin Name

I/O

Function

1 to 3

—

O

Not used (open)

4

CH.F

O

Motor drive signal (load chucking direction) output to the chucking motor drive (IC52)
“L” active    *1

5

CH.R

O

Motor drive signal (save direction) output to the chucking motor drive (IC52)
“L” active    *1

6

LOAD2

I

Chucking end detect switch (SW11) input terminal
“L”: When completion of the disc chucking operation

7

LOAD1

I

Save end detect switch (SW12) input terminal
“L”: When completion of the disc chucking operation

8

SENS2

I

Internal status signal (sense signal) input from the CXA1992BR (IC11)

9

LIM.SW

I

Sled limit in detect switch (SW1) input terminal
“L”: When the optical pick-up is inner position

10

EE.INIT

I

Initialize signal input for the EEPROM (IC202)    “H”: format    Fixed at “L” in this set

11

EE.CLK

O

Serial data transfer clock signal output to the EEPROM (IC202)

12

EE.DATA

I/O

Two-way data bus with the EEPROM (IC202)

13 to 19

—

O

Not used (open)

20

SINGLE

I

Setting terminal for the single disc/multiple discs mode
“L”: single mode, “H”: multiple discs mode (fixed at “H”)

21

XRST

O

System reset signal output to the CXA1992BR (IC11), CXD2530Q (IC101) and CXD2522Q 
(IC401)    “L”: reset

22

FOK

I

Focus OK signal input from the CXA1992BR (IC11)    “L”: NG, “H”: OK

23

SENS

I

Internal status signal (sense signal) input from the CXD2530Q (IC101)

24

GFS

I

Guard frame sync signal input from the CXD2530Q (IC101)    “L”: NG, “H”: OK

25

GRSRT

O

Reset signal output to the CXD2522Q (IC401)    “L”: reset

26

XQOK

O

Subcode Q OK pulse signal output to the CXD2522Q (IC401)    “L” active

27

SDTI

I

ESP status signal input from the CXD2522Q (IC401)

28

XSOE

O

ESP status read enable signal output to the CXD2522Q (IC401)    “L” active

29

ESPXLT

O

ESP latch pulse signal output to the CXD2522Q (IC401)    “L” active

30

RST

I

System reset signal input from the SONY bus interface (IC302) and reset signal generator (IC304) 
“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 (8 MHz)

32

XTAL

O

Main system clock output terminal (8 MHz)

33

VSS

—

Ground terminal

34

TX

O

Sub system clock output terminal    Not used (open)

35

TEX

I

Sub system clock input terminal    Not used (fixed at “L”)

36

AVSS

—

Ground terminal (for A/D converter)

37

AVREF

I

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

38

MCK

I

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

39

EHS

I

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

40

H.TEMP

I

High temperature sensor input terminal    Not used (fixed at “L”)

41

XRDE

O

D-RAM read enable signal output to the CXD2522Q (IC401)    “L” active

42

XWRE

O

D-RAM write enable signal output to the CXD2522Q (IC401)    “L” active

43

A.MUTE

O

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

44

EMP

O

Emphasis mode output to the D/A converter (IC601)    “H”: emphasis on

45

ML

O

Fast speed dubbing control signal output to the D/A converter (IC601)    “L”: fast speed

46

GRSCOR

I

Subcode sync (S0+S1) detection signal input from the CXD2522Q (IC401)

– 50 –

Pin No.

Pin Name

I/O

Function

47

D/A.RESET

O

Reset signal output to the D/A converter (IC601)    “L”: reset

48

SCK

I

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

49

SI

I

Serial data input from the SONY bus interface (IC302)

50

SO

O

Serial data output to the SONY bus interface (IC302)

51

SCLK

O

Subcode Q data reading clock signal output to the CXD2530Q (IC101)

52

SUBQ

I

Subcode Q data input from the CXD2530Q (IC101)

53

—

O

Not used (open)

54

C.OUT

I

Track number count signal input from the CXA1992BR (IC11)

55

BUS.ON

I

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

56

A/D.SW

I

Analog/digital select switch (SW801) input terminal    “L”: digital, “H”: analog

57

MGLK

I

Magazine eject operation completion detect switch (SW201) input    “L”: eject completed

58

ELV.F

O

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

59

—

O

Not used (open)

60

MAG.SW

I

Magazine in/out detect switch (SW202) input    “L”: magazine detected

61

BU.CHK

I

Battery detection signal input terminal    “H”: battery on

62

W.UP

I

Bus on or eject switch (SW301) input terminal    “H”: bus on or eject switch pushing

63

SCOR

I

Subcode sync (S0+S1) detection signal input from the CXD2530Q (IC101)

64

EJECT

I

Eject switch (SW301) input terminal    “H” active

65

CD.CLK

O

Serial data transfer clock signal output to the CXD2530Q (IC101) and CXD2522Q (IC401)

66

CD.XLT

O

Serial data latch pulse signal output to the CXD2530Q (IC101)

67

CD.DATA

O

Serial data output to the CXD2530Q (IC101) and CXD2522Q (IC401)

68

CD.ON

O

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

69

ELV.ON

O

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

70

ELV.R

O

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

71

—

O

Not used (open)

72

VDD

—

Power supply terminal (+5V)

73

NC (VDD)

—

Connected to the power supply (+5V)

74

BUSY

I

Busy monitor input from the CD text decoder (IC501)    “L”: busy status

75

RESET

O

Reset signal output to the CD text decoder (IC501)    “L”: reset

76

REQ

I

Data request signal input from the CD text decoder (IC501)    “L” active

77

CCCLK

O

Command clock signal output to the CD text decoder (IC501)

78

CSO

O

Command data output to the CD text decoder (IC501)

79

CSI

I

Command data input from the CD text decoder (IC501)

80

ADJ

I

Automatic/manual adjustment selection terminal
“L”: manual adjustment mode, “H”: automatic adjustment mode (fixed at “H” in this set)

*1  chucking motor (M103) control

STOP

LOAD

CHUCKING

SAVE

BRAKE

CH.F (pin 4)

“H”

“L”

“H”

“L”

CH.R (pin 5)

“H”

“H”

“L”

“L”

Mode

Terminal

*2  elevator motor (M104) control

STOP

ELEVATOR 

UP

ELEVATOR

DOWN

BRAKE

ELV.F (pin %•)

“H”

“L”

“H”

“L”

ELV.R (pin &º)

“H”

“H”

“L”

“L”

Mode

Terminal

– 51 –

•

Pin No.

Pin Name

I/O

Function

1, 2

NC

O

Not used (open)

3

NC

I

Not used (fixed at “L”)

4

REQ

O

Request signal output to the system controller (IC201)    “L” active

5

CCLK

I

Serial data transfer clock signal input from the system controller (IC201)

6

CSI

I

Serial data input from the system controller (IC201)

7

CSO

O

Serial data output to the system controller (IC201)

8

SCLK

O

Clock signal output for subcode data reading to the CXD2530Q (IC101)

9

SSI

I

Subcode data input from the CXD2530Q (IC101)

10

NC

O

Not used (open)

11 to 18

ADD0 to ADD7

O

Address signal output to the S-RAM (IC502)

19

NC

I

Not used (fixed at “L”)

20 to 27

DATA0 to DATA7

I/O

Two-way data bus with the S-RAM (IC502)

28

RST

I

System reset signal input from the system controller (IC201), SONY bus interface (IC302) and 
reset signal generator (IC304)    “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”

29

EXTAL

I

System clock input terminal (10 MHz)

30

XTAL

O

System clock output terminal (10 MHz)

31

VSS

—

Ground terminal

32 to 55

NC

O

Not used (open)

56

BUSY

O

Busy signal output to the system controller (IC201)    “L”: busy status

57 to 61

NC

O

Not used (open)

62

CE

O

Chip enable signal output to the S-RAM (IC502)    “L” active

63

WE

O

Data write enable signal output to the S-RAM (IC502)    “L” active

64 to 69

ADD8 to ADD13

O

Address signal output to the S-RAM (IC502)

70

VDD

—

Power supply terminal (+5V)

71, 72

NC

O

Not used (open)

73

NC

I

Not used (fixed at “H”)

74

ADD14

O

Address signal output to the S-RAM (IC502)

75

NC

O

Not used (open)

76

SCOR

I

Subcode sync (S0+S1) detection signal input from the CXD2530Q (IC101)

77

WFCK

I

Write frame clock (7.35 kHz) signal input from the CXD2530Q (IC101)

78

BUCK

I

Backup power supply detection signal input terminal (used also to reset standby)

79, 80

NC

I

Not used (fixed at “L”)

– 52 –

Les composants identifiés par une
marque 

! sont critiquens pour la

sécurité.
Ne les remplacer que par une pièce
portant le numéro spécifié.

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 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

3-010-104-01 DAMPER (250)

* 2

3-010-097-11 COVER (LOWER)

3

1-664-796-11 JACK FLEXIBLE BOARD

* 4

1-672-617-11 JACK BOARD

5

X-3376-459-1 DOOR (T) ASSY (EXCEPT US, Canadian)

5

X-3376-831-1 DOOR ASSY (US, Canadian)

6

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

7

3-030-489-11 PANEL, FRONT

8

3-012-388-01 SCREW (M2X3)

* 9

3-010-105-01 ESCUTCHEON (US, Canadian)

* 9

3-022-006-01 ESCUTCHEON (T) (EXCEPT US, Canadian)

* 10

3-010-106-01 BUTTON (EJ) (

6) (US, Canadian)

* 10

3-022-007-01 BUTTON (EJT) (

6) (EXCEPT US, Canadian)

* 11

3-022-012-01 HEAT SINK (T)

12

3-010-103-01 SPRING (FL), TENSION

13

3-010-101-01 LEVER (FL)

* 14

3-010-096-11 COVER (UPPER)

* 15

A-3317-605-A MAIN BOARD, COMPLETE

* 16

3-022-694-01 HOLDER (TR3)

17

3-935-636-11 SCREW (FP)

18

X-3373-215-1 ARM (FL) ASSY (US, Canadian)

18

X-3375-357-1 ARM (FLT) ASSY (EXCEPT US, Canadian)

* 19

3-013-658-01 SHEET (FJ), PROTECTION

20

X-3373-986-1 ARM (FR) ASSY (US, Canadian)

20

X-3375-360-1 ARM (FRT) ASSY (EXCEPT US, Canadian)

* 21

3-024-065-01 CUSHION (EJECT) (EXCEPT US, Canadian)

21

3-350-124-01 CUSHION (EJECT) (US, Canadian)

22

3-028-802-01 SPACER (MOUNT 30)

* 23

1-672-618-11 DIGITAL OUT BOARD

* 24

3-011-205-01 BRACKET (LIGHT)

25

3-011-204-01 COVER (LIGHT) (US, Canadian)

25

3-011-204-11 COVER (LIGHT) (EXCEPT US, Canadian)

26

3-924-924-01 COVER (LIGHT) (US, Canadian)

26

3-924-924-11 COVER (LIGHT) (EXCEPT US, Canadian)

27

3-912-956-11 SCREW (2.6X6) (CU), +BVTT

28

3-024-067-01 CUSHION (T), BATTERY

(EXCEPT US, Canadian)

28

3-911-215-02 SHEET (LEAD RETAINER) (US, Canadian)

IC303

8-759-054-12 IC   PQ09RA1

IC305

8-759-231-53 IC   TA7805S

#2

#2

#11

#2

#2

#1

not supplied

#13

MG-250C-137

main flexible board

IC303

IC305