DOWNLOAD Sony XR-CA370 / XR-CA370X (serv.man2) Service Manual ↓ Size: 1.63 MB | Pages: 31 in PDF or view online for FREE

21

Pin No.

Pin Name

I/O

Description

50

ATT

O

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

51 to 53

NC

O

Not used

54

TU-ATT

O

Tuner muting on/off control signal output to the tuner unit    “L”: muting on

55, 56

NC

O

Not used

57

LO/DX

O

Local/DX selection signal output terminal    “L”: DX, “H”: local    Not used

58

TU-ON

O

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

59

VOL-ATT

O

Electrical volume muting on/off control signal output to the electrical volume    “L”:muting on 

60

FM-ON

O

FM system power supply on/off control signal output terminal                                                          
“H”: FM power on    Not used    

61

AM-ON

O

AM system power supply on/off control signal output terminal                                                          
“H”: AM power on    Not used

62

NC

O

Not used

63

LCD-RES

O

LCD reset signal output to the liquid crystal display driver     “L”: reset

64

LCD-CE

O

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

65

FLASH-W

I

Internal flash memory data write mode detection signal input                                                            
“L”: data write mode    Normally: fixed at “H”

66

TEST-IN

I

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

67 to 73

NC

O

Not used

74

EE-SIO

I/O

Two-way data bus with the tuner unit

75

EE-CKO

O

Serial data transfer clock signal output to the tuner unit

76

COL-SEL

I

Illumination color selection signal input    “L”: amber illumination    “H”: green illumination         
(XR-CA370:fixed at “H” in this set, XR-CA370X:fixed at “L” in this set)

77 to 82

NC

O

Not used

83

ILL-ON

O

Power on/off control signal output of the illumination LED and LCD back light                               
“H”: power on

84

DEST-SEL0

I

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

85

DEST-SEL1

I

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

86

DEST-SEL2

I

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

87 to 92

NC

O

Not used

93

NOSE-SW

I

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

94

NS-MASK

O

Noise detection port mask output terminal    “H” active 

95

DAVSS

—

Ground terminal (for D/A converter)

96

TAPE-ON

O

Capstan/reel motor drive signal output    “H”: motor on

97

N/R

I

Tape direction switch input terminal    “L”: reverse direction, “H”: forward direction

98

FF/REW

I

FF/REW detection switch input terminal    “L”: FF/REW mode, “H”: PLAYBACK mode

99

TAPE-IN

I

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

100

DAVDD

—

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

22

• 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

3-246-741-01 PANEL, SUB

2

X-3380-594-6 LOCK ASSY (S)

3

3-041-581-11 DOOR, CASSETTE

4

3-044-125-01 SPRING, TORSION

5

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

6

1-757-662-11 CORD (WITH CONNECTOR) (ISO) (POWER)

7

3-042-244-01 SCREW (T)

8

3-246-758-01 COLLAR

9

3-937-650-01 PLATE (C), GROUND

F901

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

#1

7-685-792-09 SCREW +PTT 2.6X6 (S)

F901

#1

#1

#1

not supplied

main board section

front panel section

MG-36SZ13-32

not supplied

not supplied

not supplied

23

Ref. No.

Part No.

Description

Remark

Ref. No.

Part No.

Description

Remark

51

A-3315-980-A PANEL ASSY, FRONT (CA370X)

51

A-3337-220-A PANEL ASSY, FRONT (CA370)

52

X-3383-133-1 BUTTON KIT (SVX) ASSY

53

3-231-816-01 SPRING (RELEASE)

54

3-246-762-01 PANEL, FRONT (CA370X)

54

3-246-762-11 PANEL, FRONT (CA370)

55

3-029-327-01 SPRING (EJECT)

56

3-375-372-01 SPRING (F/R)

57

1-780-021-11 CONDUCTIVE BOARD, CONNECTION

58

1-786-465-11 SWITCH, SHEET

59

3-246-739-01 PANEL, FRONT BACK

60

X-3378-490-2 CASE (PANEL) ASSY

61

3-246-744-01 BUTTON (EJECT) (Z)

62

3-246-743-01 BUTTON (REW) (m)

63

3-246-742-01 BUTTON (FF) (M)

LCD1

1-805-131-11 DISPLAY PANEL, LIQUID CRYSTAL

#4

7-685-105-19 SCREW +P 2X8 TYPE2 NON-SLIT

#4

LCD1

not supplied

not supplied

not supplied

not supplied

not supplied

not supplied

not supplied

not supplied

#4

not supplied
(control board)

24

Ref. No.

Part No.

Description

Remark

Ref. No.

Part No.

Description

Remark

101

A-3274-623-A MAIN BOARD, COMPLETE (CA370X)

101

A-3274-657-A MAIN BOARD, COMPLETE (CA370)

* 102

3-041-578-01 BRACKET (IC)

TU100

A-3220-887-A TUNER UNIT (TUX-030)

#3

7-685-794-09 SCREW +PTT 2.6X10 (S)

#3

#3

main board

not supplied

TU100