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33

30

29

1

2

CCB

INTERFACE

CONTROL

CIRCUIT

LOGIC

CIRCUIT

CONTROL

CIRCUIT

26

+

–

25

24

+

–

23 22 21

20 19 18 17

+

–

+ 
–

5

+ 
–

6

7

+ 
–

8

9

10

11 12 13 14

+ 
–

+

–

3

LOUT

LBASS2

LBASS1

LTRE

LIN

LSELO

L4

L3

L2

L1

15

NC

VSS

4

TEST

VDD

ROUT

RBASS2

RBASS1

RTRE

RIN

RSELO

R4

R3

R2

R1

16

NC

CL

DI

CE

28

+

–

RVREF

+

–

LVREF

VREF

27

NC

GND

OUT1

VCTL

VZ1

VZ2

IN1

IN2

VCC1

VCC2

OUT2

5

6

7

8 9 10

1

2 3

4

DRIVER OUT

PRE DRIVER

LOGIC

SWITCH

TSD

BIAS

ANALOG

DIGIT

AL

RCLK

NC

XO

XI

VSS2

T2

VDD2

T1

QUAL

RDA

T

VREF

MUX

VDD1

VSS1

VSS3

CMP

1

4

3

6

5

8

7

2

14

15

16

13

12 11 10

9

CLOCK

PLL 57kHz

RDS/ARI

COMPARATOR

8th SWITCHED

CAPACITOR

FILTER

ANTI-ALIASING

FILTER

BIPHASE

DECODER

PLL

1187.5Hz

DEFFERENTIAL

DECODER

TEST

34

•

Pin No.

Pin Name

I/O

Description

1

SENSOR

I

Tape end detect sensor input terminal    “H”: input when the tape end detected

2

RDS-IN

I

Serial data reading clock signal input from the RDS decoder
Used for the AEP, UK models (Except AEP, UK models: not used)

3

SIRCS

I

Remote control signal input from the remote control receiver

4

MOT-CON

O

Capstan/reel motor on/off control signal output terminal    “H”: motor on

5

CD-DATA/

TU-DATA      

O

Serial data output to the CXD2587Q (at CD function)
PLL serial data output to the tuner pack (at tuner function)

6

T-MODE

I

Head position detect switch input terminal    “L”: forward direction, “H”: reverse direction

7

REG-CON

O

Main system power supply on/off contorl signal output terminal    “H”: power on

8

CD-CLK/TU-

CLK

O

Serial data transfer clock signal output to the CXD2587Q (at CD function)
PLL serial data transfer clock signal output to the tuner pack (at tuner funcion)

9

JOG-C (BASS)

I

Jog dial pulse input from the rotary encoder (BASS) (C phase input)

10

SOL-CON

O

Trigger plunger on/off control signal output terminal    “H”: plunger on

11

CD-CLK

O

Subcode Q data reading clock signal output ti the CXD2587Q (at CD function)

12

SQSO/

RDS-DATA

I

Subcode Q data input from the CXD2587Q (at CD function)
RDS serial data input from the RDS decoder (at tuner function)    Used for the AEP, UK models 
(Except AEP, UK models: not used)

13

HOLD

O

Automatic power control hold signal output to the RF amplifier

14

TRAY-OPEN

O

Motor drive siganl output to the loading motor drive    “H”: active    *1

15

TRAY-CLOSE

O

Motor drive signal output to the loading motor drive    “H”: active    *1

16

JOG-D (BASS)

I

Jog dial pulse input from the rotary encoder (BASS) (D phase input)

17

TUNED

I

Tuning detection signal input from the tuner pack (at tuner function)

18

CD-SENSE/
TU COUNT

I

Internal status (SENSE) input from the CXD2587Q (at CD function)
PLL count data input from the tuner pack (at tuner function)

19

CD-LATCH/

TU CE

O

Serial data latch pulse output to the CXD2587Q (at CD function)
PLL serial chip enable signal output to the tuner pack (at tuner function)

20

JOG-B

I

Jog dial pulse input from the rotary encoder (VOLUME) (B phase input)

21

JOG-A

I

Jog dial pulse input from the rotary encoder (VOLUME) (A phase input)

22

AMP-MUTE

O

Muting on/off control signal output to the power amplifier     “H”: muting on

23

VOL-CE

O

Chip enable signal output for the electrical volume

24

STANDBY LED

I

LED drive signal output of the STANDBY indicator (D856)    “H”: LED on

25

TU-ON

O

Power supply on/off control signal output of the tuner section
LED drive signal output of the BAND indicator    “H”: tuner power on (LED on)

26

D. S. G.

O

LED drive signal output of the DSG (Dynamic Sound  Generator) indicator    “H”: LED on

27

CD-SYNC

O

LED drive signal output of the CD SYNC indicator    “H”: LED on

28

SCK

O

Serial data transfer clock signal output to the electrical volume

29

JOG-E (TREBLE)

I

Jog dial pulse input from the rotary encoder (TREBLE) (E phase input)

30

JOG-F

I

Jog dial pulse input from the rotary encoder (TREBLE) (F phase input)

31

DC DETECT

I

Speaker DC output protect signal input terminal

*1  Loading motor control

Stop

Table In

Table Out

Brake

TRAY-OPEN (pin qf)

“L”

“L”

“H”

“H”

TRAY-CLOSE (pin qg)

“L”

“H”

“L”

“H”

Terminal

Mode

35

Pin No.

Pin Name

I/O

Description

32

TC-SW

I

Half detect (side A and B) switch and cassette in detect switch input terminal (A/D input) 

33

TRAY-SW

I

Disc tray open/close detect switch input terminal (A/D input)    “L”: open position

34

KEY3

I

Key input terminal (A/D input)

35

KEY2

I

Key input terminal (A/D input)

36

KEY1

I

Key input terminal (A/D input)

37

SIMUKE/TEST

I

Destination setting terminal (A/D input)

38

RESET

I

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

39

EXTAL1

I

Main system clock input terminal (4.19MHz)

40

XTAL1

O

Main system clock output terminal (4.19MHz)

41

VSS

—

Ground terminal

42

XTAL2

O

Sub system clock output terminal    Not used

43

EXTAL2

I

Sub system clock input terminal    Not used

44

AVREF

I

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

45

AVSS

—

Ground terminal (for A/D conversion)

46

VL

O

Not used

47 to 49

VLC3 to VLC1

—

Power supply terminal for the liquid crystal display bias

50 to 53

COM0 to COM3

O

Common drive signal output to the liquid crystal display

54 to 85

SEG0 to SEG31

O

Segment drive signal output to the liquid crystal display

86

C-XRST

O

Reset signal output to the CXD2587Q and BA5974FP (at CD function)

87

REC-MUTE

O

Recording muting on/off selection signal output to the tape deck section
“H”: muting on, “L”: muting of

88

SDA

O

Serial data output to the electrical volume

89

VDD

—

Power supply terminal (+5V)

90

NC

—

Not used (open)

91

VSS

—

Ground terminal

92

TX

O

Sub system clock output terminal (32.768kHz)

93

TEX

I

Sub system clock input terminal (32.768kHz)

94

CD-ON

O

Power supply on/off control signal output of the CD section
LED drive signal output of the CD u indicator    “H”: CD power on (LED on)

95

REC/PB

O

Recording/playback selection signal output to the tape deck section
“L”: playback mode, “H”: recording mode

96

L-MUTE

O

Line muting on/off selection signal output to the tape deck section
“H”: muting on, “L”: muting off

97

AU MUTE

O

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

98

TC-ON

O

Power supply on/off control signal output of the cassette holder back light
LED drive signal output of the TAPE n N indicator    “H”: back light on (LED on)

99

WP

I

Wakeup control signal input terminal

100

SCOR

I

Subcode sync (S0+S1) detection signal input from the CXD2587Q (at CD function)

36

• Items marked “*” are not stocked since they

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

• Accessories are given in the last of the elec-

trical 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

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.

• Abbreviation

AR

: Argentina model

AUS : Australian model
CND : Canadian model

KR

: Korean model

MX : Mexican model
SP

: Singapore model

Ref. No.

Part No.

Description

Remark

Ref. No.

Part No.

Description

Remark

1

X-4954-469-1 LID SUB ASSY, CD

2

X-4954-468-1 LID SUB ASSY, CASSETTE

4

1-757-808-11 CABLE, FLEXIBLE FLAT (18 CORE)

5

1-757-807-11 CABLE, FLEXIBLE FLAT (20 CORE)

6

1-683-890-11 LCD BOARD (AEP, UK, E, AR, SP, KR, AUS)

6

1-683-890-21 LCD BOARD (US, CND, MX)

7

4-217-319-11 PLATE, LCD LIGHT

8

X-4954-467-1 CASSETTE HOLDER SUB ASSY

9

4-238-310-01 SPRING, OPEN

10

4-217-341-61 COVER (UPPER)

(US, CND, AEP, E, KR, MX, AR, SP, AUS)

10

4-238-306-01 COVER, UPPER (UK)

11

4-221-580-01 SCREW, CASE

12

1-824-335-11 WIRE (FLAT TYPE) (EEC) (8 CORE)

13

1-773-044-11 WIRE (FLAT TYPE) (17 CORE)

14

A-4728-263-A TC BOARD, COMPLETE

15

1-796-353-11 DECK, MECHANICAL

17

4-241-659-01 BELT

18

4-241-718-01 BELT (FLAT)

#2

7-685-245-19 SCREW +KTP 3X6 TYPE2 NON-SLIT

#3

7-685-246-14 SCREW +KTP 3X8 TYPE2 NON-SLIT

#6

7-685-546-14 SCREW +BTP 3X8 TYPE2 N-S

#9

7-685-861-01 SCREW +BVTT 2.6X5 (S)