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58

•

Pin No.

Pin Name

I/O

Description

1

SYS-MUTE

O

Line muting on/off control signal output terminal

2

LATCH (ECHO)

O

Serial data latch pulse signal output to the digital echo

3

TU/EVOL DO

O

Serial data output to the FM/AM tuner unit, motor/plunger driver and electrical volume

4

NC

O

Not used

5

CD DATAO

O

Serial data output to the MPEG video/audio decoder

6

CD ON

O

Power supply on/off control signal output for the CD/video CD section    “H”: power on

7

CLK-SHIFT

O

Shift clock signal output terminal    Not used

8

LCK

O

Serial data latch pulse clock signal  output to the motor/plunger driver

9

TU CE

O

Chip enable signal output to the FM/AM tuner unit

10

NC

I

Not used

11

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”

12

XT1

I

System clock input terminal (32.768 kHz)

13

XT2

O

System clock output terminal (32.768 kHz)

14

VSS1

—

Ground terminal

15

CF1

I

System clock input terminal (8.64 MHz)

16

CF2

O

System clock output terminal (8.64 MHz)

17

VDD1

—

Power supply terminal (+3.3V)

18

POWER DOWN

I

Power down detection signal input terminal

19

TU-SIG/MIC

I

MIC signal input terminal

20

CD BUSY SW

I

Optical pick-up up/down detection and tray open/close detection signal input terminal

21

SPEANA-L

I

Spectrum analyzer drive signal input terminal (low band)

22

SPEANA-M

I

Spectrum analyzer drive signal input terminal (middle band)

23

SPEANA-H

I

Spectrum analyzer drive signal input terminal (high band)

24 to 26

KEY3 to KEY1

I

Front panel key input terminal (A/D input)

27

HOLD

I

System malfunction signal (hold signal) input from the power amplifier circuit

28

DATA (ECHO)

O

Serial data output to the digital echo

29

RMC

I

Remote control signal input terminal

30 to 40

G1 to G11

O

Grid drive signal output to the fluorescent indicator tube

41 to 45

S1 to S5

O

Segment drive signal output to the fluorescent indicator tube

46

VDD3

—

Power supply terminal (+3.3V)

47

A PHOTO/S6

I/O

Deck-A tape reel rotating detection signal input and segment drive signal output to the fluorescent 
indicator tube

48

B PHOTO/S7

I/O

Deck-B tape reel rotating detection signal input and segment drive signal output to the fluorescent 
indicator tube

49

REC REV/S8

I/O

Recording (reverse direction) detection signal input and segment drive signal output to the 
fluorescent indicator tube

50

B MODE/S9

I/O

Deck-B mode detection signal input and segment drive signal output to the fluorescent indicator 
tube

51

FIX0

I/O

Not used

52

B HALF/S10

I/O

Deck-B cassette detection signal input  and segment drive signal output to the fluorescent 
indicator tube

53

REC FWD/S11

I/O

Recording (forward direction) detection signal input and segment drive signal output to the 
fluorescent indicator tube

54

A HALF/S12

I/O

Deck-A cassette detection signal input  and segment drive signal output to the fluorescent 
indicator tube

59

Pin No.

Pin Name

I/O

Description

55

A MODE/S13

I/O

Deck-A mode detection signal input and segment drive signal output to the fluorescent indicator 
tube

56 to 71

S14 to S29

O

Segment drive signal output to the fluorescent indicator tube

72

VDD4

—

Power supply terminal (+3.3V)

73

S30

O

Segment drive signal output to the fluorescent indicator tube

74

CD NUMBER 

SENS

I

CD table address detection signal input terminal

75

TUNED

I

Tuning detection signal input from the FM/AM tuner unit

76

STEREO

I

FM stereo detection signal input from the FM/AM tuner unit

77

VOL A

I

Jog dial pulse input terminal (VOLUME)

78

VOL B

I

Jog dial pulse input terminal (VOLUME)

79

JOG A

I

Jog dial pulse input terminal (MULTI JOG)

80

JOG B

I

Jog dial pulse input terminal (MULTI JOG)

81

TRE A

I

Jog dial pulse input terminal (TREBLE)

82

TRE B

I

Jog dial pulse input terminal (TREBLE)

83

BASS A

I

Jog dial pulse input terminal (BASS)

84

BASS B

I

Jog dial pulse input terminal (BASS)

85

TUNER MUTE

O

Tuner muting on/off control signal output terminal

86

L-MUTE

O

Line muting on/off control signal output terminal

87

LED R

O

LED drive signal output terminal    Not used

88

CLK

O

Serial data transfer clock signal output to the FM/AM tuner unit, motor/plunger driver, digital 
echo and BBE controller

89

VSS2

—

Ground terminal

90

VDD2

—

Power supply terminal (+3.3V)

91

VF ON

O

VF (vocal fader) on/off control signal output terminal    “H”: VF on

92

KEYSCAN

O

Scan signal output for switches in the tape deck section and segment drive signal (S14 to S25)

93

POWER LED

O

LED drive signal output terminal

94

POWER

O

Power on/off control signal output terminal    “H”: power on

95

CD ACK

I

Acknowledge signal input from the video CD MPEG processor

96

TU DI

I

Serial data input from the FM/AM tuner unit

97

CD DATAI

I

Serial data input from the video CD MPEG processor

98

NC

I

Not used

99

NC

O

Not used

100

CD STB

O

Strobe signal output to the video CD MPEG processor

60

• 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.

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

4-245-158-01 EMBLEM

2

4-245-186-41 PANEL, TRAY

3

4-245-183-11 CASE (SIDE-L)

4

4-244-849-31 CASE (TOP)

5

4-245-184-11 CASE (SIDE-R)

6

3-363-099-01 SCREW (CASE 3 TP2)

7

3-363-099-31 SCREW (CASE 3 TP2)

8

4-246-682-01 EMBLEM (30), MP3

9

A-4748-071-A VMP50 BOARD, COMPLETE

10

4-218-253-31 SCREW (M2.6), +BTTP

11

1-775-088-11 WIRE (FLAT TYPE) (9 CORE)

12

1-824-644-11 WIRE (FLAT TYPE) (23 CORE)

#1

7-685-647-79 SCREW +BVTP 3X10 TYPE2 N-S

The components identified by
mark 0 or dotted line with mark

0 are critical for safety.
Replace only with part number
specified.

#1

#1

#1

#1

#1

#1

#1

#1

#1

#1

front panel section -1

not supplied

not supplied

CDM74B-30BD61S

chassis section

61

Ref. No.

Part No.

Description

Remark

Ref. No.

Part No.

Description

Remark

51

4-245-178-01 PLATING, KNOB ROTARY (JOG)

52

4-245-180-01 PLATING, KNOB ROTARY (TRE)

53

4-245-182-01 PLATING, KNOB ROTARY (VOL)

54

4-245-176-01 PLATING, KNOB ROTARY (BASS)

55

1-796-486-41 DECK, MECHANICAL (CWM43FR16)

#1

7-685-647-79 SCREW +BVTP 3X10 TYPE2 N-S

#1

#1

not supplied

not supplied

front panel section -2

not supplied