DOWNLOAD Sony XR-C2600 Service Manual ↓ Size: 2.18 MB | Pages: 31 in PDF or view online for FREE

21

•

Pin No.

Pin Name

I/O

Description

1

VREF–

I

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

2

—

I

Not used (fixed at “L”)

3

KEY-IN1

I

Key input terminal (A/D input) S909 to S920
(SHUF 2, REP 1, ENTER, MODE, DSPL, SEEK/AMS + > M, PRST/DISC –, SOURCE,
DISC/PRST +, SEEK/AMS – . m, SOUND, MENU keys input)

4

KEY-IN0

I

Key input terminal (A/D input) S901 to S906 (OFF, 3, 4, 5, 6, D-BASS keys input)

5, 6

—

I

Not used (fixed at “L”)

7

VSM

I

FM and AM signal meter voltage detection signal input from the FM/AM tuner unit (TU100)
(A/D input)

8, 9

—

I

Not used (fixed at “L”)

10

VREF+

I

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

11

VDD

—

Power supply terminal (+5V)

12

OSC2

O

Main system clock output terminal (18.432 MHz)

13

OSC1

I

Main system clock input terminal (18.432 MHz)

14

VSS

—

Ground terminal

15

XI

I

Sub system clock input terminal (32.768 kHz)

16

XO

O

Sub system clock output terminal (32.768 kHz)

17

MMOD

I

Not used (fixed at “L”)

18

TAPE-ON

O

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

19

FF REW. IN

I

FF/REW detection signal input terminal    “L”: FF/REW mode, “H”: play mode

20

TAPE-IN

I

Tape in detection signal input terminal    “L”: tape in

21

UNI-SO

O

Serial data output to the SONY bus interface (IC800)

22

UNI-SI

I

Serial data input from the SONY bus interface (IC800)

23

UNI-CKO

O

Serial data transfer clock signal output to the SONY bus interface (IC800)

24

N/R

I

Tape detection signal input terminal    “L”: reverse side, “H”: forward side

25

ST-IND

I/O

FM stereo broadcasting detection signal input from the FM/AM tuner unit (TU100), or forced
monaural control signal output to the FM/AM tuner unit (TU100)
“L” is input in the FM stereo mode, or “L” is output in the forced monaural mode

26

KEY-ACK

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”

27

NOSE-SW

I

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

28

BU-IN

I

Battery detection signal input from the SONY bus interface (IC800) and battery detect circuit
“L” is input at low voltage

29

—

I

Not used (fixed at “L”)

30

TEL-MUTE

I

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

31

TEST-IN

I

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

32

RAM-BU

I

Internal RAM reset detection signal input from the XC61BN3312MR (IC3)
Input terminal to check that RAM data are not destroyed due to low voltage
This checking is made within 50 msec after reset

33

RESET

I

System reset signal input from the reset signal generator (IC2) and reset switch (S2)
“L”: reset    “L” is input for several 100 msec after power on, then it changes to “H”

34

SD

I

Station detector detection signal input from the FM/AM tuner unit (TU100)
Stop level for SEEK, BTM, etc. is determined    SD is present at input of “H”

35

BEEP

O

Beep sound drive signal output terminal    Not used

36

PLL-SI

I

PLL serial data input from the FM/AM PLL (IC130)

37

PLL-CKO

O

PLL serial data transfer clock signal output to the FM/AM PLL (IC130)

38

PLL-SO

O

PLL serial data output to the FM/AM PLL (IC130)

22

Pin No.

Pin Name

I/O

Description

39

PLL-CE

O

PLL chip enable signal output to the FM/AM PLL (IC130)    “H” active

40

—

O

Not used (open)

41

FM-ON

O

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

42

LCD-SO

O

Serial data output to the liquid crystal display driver (IC900)

43

LCD-CE

O

Chip enable signal output to the liquid crystal display driver (IC900)    “H” active

44

LCD-CKO

O

Serial data transfer clock signal output to the liquid crystal display driver (IC900)

45

VOL-SO

O

Serial data output to the electrical volume (IC400)

46

VOL-CE

O

Chip enable signal output to the electrical volume (IC400)    “H” active

47

VOL-CKO

O

Bus clock signal output to the electrical volume (IC400)

48

AMP-MUTE

O

Muting on/off control signal output to the power amplifier (IC500)    “L”: muting on
“L” is output when the front panel is removed

49

AMP-ON

O

Standby on/off control signal output to the power amplifier (IC500)
“L”: standby mode, “H”: amplifier on    “L” is output when the front panel is removed

50

MUTE

O

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

51, 52

—

O

Not used (open)

53

TU-ON

O

Tuner system power supply on/off control signal output terminal    “H”: tuner power on

54, 55

—

O

Not used (open)

56

ACC-IN

I

Accessory detection signal input terminal    “L”: accessory on

57 to 59

—

O

Not used (open)

60

SYS-RST

O

Reset signal output to the SONY bus interface (IC800)    “L”: reset

61

BUS-ON

O

Bus on/off control signal output to the SONY bus interface (IC800)    “L”: bus on

62 to 67

—

O

Not used (open)

68

POWER-ON

O

Main system power supply on/off control signal output terminal    “H”: power on
“L” is output when the front panel is removed

69 to 75

—

O

Not used (open)

76

ILL

O

Power on/off control signal output of the illumination LED and liquid crystal display driver
(IC900)    “H”: power on

77

—

O

Not used (open)

78

RE0

I

79

RE1

I

80

AD-ON

O

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

81, 82

—

O

Not used (open)

83

REL

I

Rotation detection signal input from supply reel sensor and take-up reel sensor on the deck
mechanism    Not used (open)

84

SEL2 COL SEL

I

Destination setting terminal (fixed at “H” in this set)

85

SEL0

I

Destination setting terminal (fixed at “L” in this set)

86

SEL1

I

Frequency select switch (S3) input terminal
“L”: AM 9 kHz/FM 50 kHz step, “H”: AM 10 kHz/FM 200 kHz step

87 to 100

—

O

Not used (open)

Dial pulse input of the rotary encoder (S900)
 (for VOLUME/BASS/TREBLE/BALANCE/FADER control)

23

• 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

3-041-580-01 PANEL, SUB

2

X-3367-636-1 LOCK ASSY

3

3-041-581-01 DOOR, CASSETTE

4

3-044-125-01 SPRING, TORSION

5

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

6

3-727-903-01 SCREW (2X5), TAPPING, +B

* 7

X-3378-167-1 COVER ASSY

* 8

3-041-577-01 HEAT SINK

9

1-776-207-31 CORD (WITH CONNECTOR) (POWER)

* 10

3-041-578-01 BRACKET (IC)

* 11

3-046-339-01 CUSHION (U)

* 12

A-3326-392-A MAIN BOARD, COMPLETE

* 13

3-041-575-01 CHASSIS

* 14

3-041-576-01 SHEET, INSULATING

* 15

3-041-599-01 COLLAR

F700

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

TU100

1-693-458-11 TUNER UNIT (FM/AM)

24

Ref. No.

Part No.

Description

Remark

Ref. No.

Part No.

Description

Remark

51

3-041-597-01 BUTTON (1-6) (1. 2. 3. 4. 5. 6)

52

3-041-582-01 BUTTON (EJECT) (Z)

53

3-029-327-01 SPRING (EJECT)

54

3-041-605-11 BUTTON (RELEASE)

55

3-932-475-01 SPRING (RELEASE)

56

3-041-596-01 BUTTON (SOURCE)

57

3-041-604-11 BUTTON (VOL)

58

3-041-603-21 BUTTON (CROSS)

(DISC +. DISC –. + > M. – . m)

59

3-041-595-01 BUTTON (S/M) (MENU. SOUND)

* 60

3-043-247-01 CUSHION (CROSS)

61

3-041-593-01 PLATE (RING), LIGHT GUIDE

62

3-041-594-01 BUTTON (D/M/E) (DSPL. MODE. ENTER)

* 63

3-041-591-01 PLATE (LCD), GROUND

* 64

3-041-589-01 PLATE, LIGHT GUIDE

* 65

3-041-592-01 ILLUMINATOR

66

1-694-696-11 CONDUCTOR BOARD, CONNECTION

* 67

3-041-590-01 HOLDER (LCD)

68

3-041-588-01 PANEL, FRONT BACK

69

3-041-598-01 BUTTON (D-BASS)

70

3-041-601-11 BUTTON (OFF)

71

3-375-372-01 SPRING (F/R)

72

3-041-583-01 BUTTON (FF) (M)

73

3-041-584-01 BUTTON (REW) (m)

74

X-3378-652-1 PANEL SUB ASSY

LCD900 1-803-841-11 DISPLAY PANEL, LIQUID CRYSTAL