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25

Pin No.

Pin Name

I/O

Description

1

VREF –

I

Negative reference voltage (0V) input terminal

2

VSM

I

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

3

NIL

I

Not used

4, 5

KEYIN1, KEYIN0

I

Front panel key input terminal (A/D input)

6

RCIN0

I

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

7

QUALITY

I

Noise level detection signal input at SEEK mode (A/D input)

8

NIL

I

Not used

9

DSTSEL

I

Setting terminal for the destination

10

VREF

I

Reference voltage (+5V) input terminal

11

VDD

—

Power supply terminal (+5V)

12

OSCOUT

O

System clock output for high speed operation (18.43 MHz)

13

OSCIN

I

System clock input for high speed operation (18.43 MHz)

14

VSS

—

Ground terminal

15

XIN

I

System clock input for high speed operation (32.768 kHz)

16

XOUT

O

System clock output for high speed operation (32.768 kHz)

17

MMOD

I

Setting terminal for the memory mode    “L”: single chip mode

18

LCDSO

O

Serial data output to the LCD drive IC

19

LCDCE

O

Chip enable signal output to the LCD drive IC

20

LCDCKO

O

Serial data transfer clock signal output to the LCD drive IC

21 to 23

NCO

O

Not used

24

SYSRST

O

System reset signal output to the SONY bus interface

25

BUSON

O

SONY bus on/off control signal output terminal    “L”: bus on

26

KEY ACK

I

Acknowledge signal (wake up signal) input terminal for the key entry    Acknowledge signal is 
input to accept any function key in the standby status    On at input of “H”

27

DAVN

I

Data transmit completed detection signal input from the RDS decoder    Not used

28

BUIN

I

Back up power supply detection signal input terminal    “L” is input at low voltage

29

SIRCS

I

SIRCS signal input terminal

30

TUATTIN

I

Attenuate control signal input from the tuner pack

31, 32

NIL

I

Not used

33

RESET

I

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

34

TUNON

O

Power on/off control signal output for tuner section

35

BEEP

O

Beep sound drive signal output terminal

36, 37

NCO

O

Not used

38

ACCIN

I

Accessory power detection signal input terminal    “L”: accessory power on

39

NC (VCC)

O

Not used

40

TELATT

I

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

41

NC (VCC)

I

Not used

42

BUSSO

O

Serial data output to the SONY bus interface

43

BUSSI

I

Serial data input from the SONY bus interface

44

BUSCKO

O

Serial data transfer clock signal output to the SONY bus interface

45

I2C_SIO

I/O

IIC two-way data bus with the tuner pack, electrical volume and power amplifier

46

NCO

O

Not used

47

I2C_CKO

O

I2C bus clock signal output to the tuner pack, electrical volume and power amplifier

48

AMPON

O

AMP muting on/off control signal output terminal

•

26

Pin No.

Pin Name

I/O

Description

49

NCO

O

Not used

50

ATT

O

Muting on/off control signal output terminal

51

NCO

O

Not used

52

AMSON

O

Automatic music sensor detection signal output terminal    
“L”: music is present, “H”: music is not present

53

N_ROUT

O

Tape direction control signal output terminal    “L”: reverse, “H”: forward

54

MTLON

I/O

METAL control in/out terminal
At initial mode: valid/invalid selection input of METAL function (valid at “L” input)
At normal mode: METAL on/off control signal output (“H”: METAL on)

55

TAPATT

O

Tape attenuate on/off control signal output terminal    “H”: muting on
Active at ATA, FF/REW mode

56

NCO

O

Not used

57

AMSIN

I

Automatic music sensor detection signal input terminal     “L”: music is present

58

NCO

O

Not used

59

VOLATT

O

Attenuate on/off control signal output to the electrical volume

60 to 64

NCO

O

Not used

65

FLASH_W

I

Internal flash memory data write control signal input terminal

66

TESTIN

I

Test mode setting terminal    “L”: test mode, normally fixed at “H”

67

RC_IN1

I

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

68 to 70

NCO

O

Not used

71

DIAG

I

Status data input from the power amplifier

72

TUATT

O

Tuner muting on/off control signal output terminal

73

NCO

O

Not used

74

EEP_SIO

I/O

Two-way data bus with the EEPROM

75

EEP_CKO

O

Serial data transfer clock signal output to the EEPROM

76

DIMMER

O

LCD back light automatic dimmer control signal output terminal    Not used

77

NCO

O

Not used

78

DOORSW

I

Front panel open/close detection input terminal    “L”: close

79

DOORIND

O

Illumination LED drive signal output of the sub panel

80, 81

NCO

O

Not used

82

AD_ON

O

A/D converter power control signal output
When the KEY ACK (pin 26) that controls reference voltage power for key A/D conversion input 
is active, “L” is output from this terminal to enable the input

83

NCO

O

Not used

84

REL_T

I

Rotation detect signal input of the capstan/reel motor

85, 86

POS3, POS2

I

Tape position detect switch input terminal

87, 88

POS0, POS1

I

Tape position detect switch input terminal

89

LM_LO

O

Loading motor drive signal output (load-in direction)

90

LM_EJ

O

Loading motor drive signal output (eject direction)

91

TAPEON

O

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

92

CM_ON

O

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

93

NOSESW

I

Front panel remove/attach detection signal input terminal     “L”: front panel is attached

94

NS_MASK

O

Discharge control signal output for the noise detection circuit   “H”: discharge    Not used

95

DAVSS

—

Ground terminal

96, 97

RE_IN0, RE_IN1

I

Jog dial pulse input terminal

98, 99

NCO

O

Not used

100

DAVDD

—

Power supply terminal (+5V)

27

• 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.

• 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

Ref. No.

Part No.

Description

Remark

Ref. No.

Part No.

Description

Remark

1

X-3384-672-1 PANEL ASSY, SUB

2

3-042-244-01 SCREW (T)

3

1-792-195-11 CABLE, FLEXIBLE FLAT (14 CORE)

4

X-3384-259-1 LOCK ASSY

5

3-040-990-01 BUTTON (EJECT) (Z)

6

3-935-003-01 SPRING, TORSION

7

3-027-437-12 DOOR, CASSETTE

8

X-3384-203-1 GEAR ASSY

10

3-260-247-01 CUSHION (SUB PANEL)

11

A-3283-618-A MAIN BOARD, COMPLETE

12

2-021-848-01 SHEET (TU), GROUND

13

3-012-859-21 CAP (25), RUBBER

14

1-776-527-61 CORD (WITH CONNECTOR) (ISO) (POWER)

15

2-050-124-01 SCREW +BTT 2.6X5

* 16

3-046-991-02 SPACER (COVER R)

* 17

3-046-990-01 SPACER (COVER L)

F781

1-532-877-11 FUSE (BLADE TYPE) (AUTO FUSE) (10A/32V)

TU1

A-3220-961-A TUNER UNIT (TUX-032//Q3)

#1

7-685-792-09 SCREW +PTT 2.6X6 (S)

mechanism deck section
(MG-25L-136)

front panel section

not supplied

not supplied

not supplied
(SUB board)

#1

#1

#1

#1

#1

F781

not supplied

TU1

28

Ref. No.

Part No.

Description

Remark

Ref. No.

Part No.

Description

Remark

51

X-3384-637-1 KNOB VOL (SVX) ASSY

52

X-3384-740-2 PANEL ASSY (SVX), FRONT

53

X-3384-288-2 BUTTON KIT (SVX) ASSY

54

1-780-097-11 CONDUCTIVE BOARD, CONNECTION

55

X-3384-284-1 PANEL ASSY (SVX), FRONT BACK

56

X-3378-390-3 CASE (PANEL)

57

A-3282-083-A FRONT PANEL ASSY (FP-XR-F5100EE)

58

X-3384-501-2 PLATE SUB ASSY (N), LIGHT GUIDE

CN901

1-817-158-11 PLUG, CONNECTOR 14P

LCD901 1-805-456-11 DISPLAY PANEL, LIQUID CRYSTAL
RE901

1-478-474-11 ENCODER, ROTARY (JOG)

#2

7-685-106-19 SCREW +P   2X10 TYPE2 NON-SLIT

LCD901

not supplied

not 
supplied

not supplied

not 
supplied

not 
supplied

CN901

not supplied
(DISPLAY board)

#2

RE901