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61

•

Pin No.

Pin Name

I/O

Description

1

O-SYS-MUTE

O

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

2

I-BU1924 DI

I

RDS serial data input from the tuner unit (AEP and UK models)
Not used (Except AEP and UK models)

3

I-BU1924 CLK

I

RDS serial data transfer clock signal input from the tuner unit (AEP and UK models)
Not used (Except AEP and UK models)

4

O-CL78646 RESET

O

Reset signal output to the CD DSP    “L”: reset

5

O-CL78646 CE

O

Chip enable signal output to the CD DSP

6

O-CL78684 CE

O

Chip enable signal output to the MP3 decoder

7

O-M61529 CLK

O

Serial data transfer clock signal output to the electrical volume

8

O-BU2099 LCK

O

Serial data latch pulse clock signal output to the LED driver, tape mechanism controller, multi
controller and bass boost controller

9

O-LC72121 CE

O

Chip enable signal output to the tuner unit

10

I-CL78684 SYNC

I

Chip enable signal input from the MP3 decoder

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

Sub system clock input terminal (32.768 kHz)

13

XT2

O

Sub system clock output terminal (32.768 kHz)

14

VSS1

—

Ground terminal

15

CF1

I

Main system clock input terminal (8.64 MHz)

16

CF2

O

Main system clock output terminal (8.64 MHz)

17

VDD1

—

Power supply terminal (+3.3V)

18

I-SPEANA L

I

Spectrum analyzer drive (low frequency)  signal input from the spectrum analyzer band-pass filter

19

I-SPEANA M

I

Spectrum analyzer drive (middle frequency) signal input from the spectrum analyzer band-pass
filter

20

I-SPEANA H

I

Spectrum analyzer drive (high frequency) signal input from the spectrum analyzer band-pass filter

21

I-MIC/I-TU SIG

I

Mic audio signal input terminal  (Except AEP, UK and CIS models)
Not used (AEP, UK and CIS models)

22

I-BU UP DOWN/

CD OPEN CLOSE

I

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

23

NC

—

Not used

24 to 26

I-KEY3 to I-KEY1

I

Front panel key input terminal (A/D input)

27

I-POWER DOWN

I

AC detection signal input terminal    “L”: power down

28

I-RMC

I

Remote control signal input terminal

29

I-HOLD

I

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

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

S6/I-A-MODE

I/O

Segment drive signal output to the fluorescent indicator tube and deck-A mode detection signal
input from the tape mechanism deck block    “L” active

48

S7/I-A-PHOTO

I/O

Segment drive signal output to the fluorescent indicator tube and deck-A tape reel rotating
detection signal input from the tape mechanism deck block

49

S8/I-A-HALF

I/O

Segment drive signal output to the fluorescent indicator tube and deck-A cassette detection signal
input from the tape mechanism deck block    “L”: cassette in

50

I-REC (FWD)

I

Recording-proof (forward direction) detection signal input from the tape mechanism deck block
“L”: recording possible

51

FIX0

—

Not used

62

Pin No.

Pin Name

I/O

Description

52

I-B-PHOTO

I

Deck-B tape reel rotating detection signal input from the tape mechanism deck block

53

I-B-HALF

I

Deck-B cassette detection signal input from the tape mechanism deck block    “L”: cassette in

54

S9/I-B-MODE

I/O

Segment drive signal output to the fluorescent indicator tube and deck-B mode detection signal
input from the tape mechanism deck block    “L” active

55

S10/I-REC (REW)

I/O

Segment drive signal output to the fluorescent indicator tube and recording-proof (reverse
direction) detection signal input from the tape mechanism deck block
“L”: recording possible

56 to 68

S11 to S23

O

Segment drive signal output to the fluorescent indicator tube

69 to 71

S24 to S26

O

Segment drive signal output to the fluorescent indicator tube    Not used

72

VDD4

—

Power supply terminal (+3.3V)

73 to 75

—

—

Not used

76

I-HP-MUTE

I

Headphone detection signal input terminal    “H”: headphone in

77

I-TRE B

I

Jog dial pulse input from the rotary encoder (TREBLE/MIDDLE) (B phase input)

78

I-TRE A

I

Jog dial pulse input from the rotary encoder (TREBLE/MIDDLE) (A phase input)

79

I-BASS B

I

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

80

I-BASS A

I

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

81

I-JOG B

I

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

82

I-JOG A

I

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

83

I-VOL B

I

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

84

I-VOL A

I

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

85

I-WRQ

I

CD interruption signal input from the CD DSP

86

I-CD DRF

I

CD focus on/off detection signal input from the CD DSP

87

I-LC72121 DI

I

Serial data input from the tuner unit

88

I-TUNER TUNE

I

Tuning detection signal input from the tuner unit    “L”: tuned

89

VSS2

—

Ground terminal

90

VDD2

—

Power supply terminal (+3.3V)

91

O-LC72121/

M61529/BU2099

DO

O

Serial data output to the tuner unit, electrical volume and LED driver

92

O-LC72121/

BU2099 CLK

O

Serial data transfer clock signal output  tuner unit, LED driver, tape mechanism controller, multi
controller and bass boost controller

93

O-POWER LED

O

LED drive signal output of the POWER 1 STANDBY/ON indicator    “L”: LED on

94

O-POWER RELAY

O

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

95

O-KEYSCAN

O

Key scan signal output for initial diode and switches in the tape mechanism deck
“L”: key scan

96

I-CD NUMBER

SENS

I

CD table address detection signal input terminal

97

I-TUNER STEREO

I

FM stereo detection signal input from the tuner unit    “L”: stereo

98

O-LC78646/

LC78684 DO

O

Serial data output to the CD DSP and MP3 decoder

99

I-LC78646/

LC78684 DI

I

Serial data input from the CD DSP and MP3 decoder

100

O-LC78646/

LC78684 CLK

O

Serial data transfer clock signal output to the CD DSP and MP3 decoder

63

• 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

• Abbreviation

E51 : Chilean and Peruvian models
MX : Mexican model

Ref. No.

Part No.

Description

Remark

Ref. No.

Part No.

Description

Remark

1

4-233-980-01 RUBBER FOOT

2

4-246-682-01 EMBLEM (30), MP3

3

4-245-158-01 EMBLEM

4

4-245-113-01 PANEL, TRAY

5

3-363-099-01 SCREW (CASE 3 TP2)

6

3-363-099-41 SCREW (CASE 3 TP2)

7

4-245-183-51 CASE (SIDE-L)

8

4-244-849-51 CASE (TOP)

9

4-245-184-51 CASE (SIDE-R)

#1

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

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CDM74F-K6BD71A

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The components identified by
mark 0 or dotted line with mark

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

64

Ref. No.

Part No.

Description

Remark

Ref. No.

Part No.

Description

Remark

51

4-245-125-01 KNOB, ROTARY VOLUME

52

4-245-126-11 KNOB, ROTARY JOG

53

4-246-528-01 RING (BASS)

54

4-245-131-01 PANEL, BASS

55

4-245-128-01 KNOB, ROTARY BASS (AEP, UK, CIS)

55

4-245-132-01 KNOB, ROTARY BASS (LH) (MX, E51)

56

4-245-127-11 KNOB, ROTARY TREBLE

57

4-245-114-51 WINDOW, DISPLAY (AEP, UK)

57

4-245-114-61 WINDOW, DISPLAY (CIS)

57

4-245-114-71 WINDOW, DISPLAY (MX, E51)

58

1-769-889-11 WIRE (FLAT TYPE) (7 CORE)

59

4-245-135-01 GUIDE, LED GRAPHIC EQUALIZER (L)

60

4-245-134-01 GUIDE, LED POWER

61

4-245-141-01 GUIDE, LED GRAPHIC EQUALIZER (R)

62

A-4734-180-A PANEL BOARD, COMPLETE (AEP, UK)

62

A-4734-284-A PANEL BOARD, COMPLETE (MX, E51)

62

A-4734-792-A PANEL BOARD, COMPLETE (CIS)

63

1-773-322-11 WIRE (FLAT TYPE) (31 CORE)

64

1-769-976-11 WIRE (FLAT TYPE) (13 CORE)

65

1-769-919-11 WIRE (FLAT TYPE) (9 CORE)

66

4-245-119-01 KNOB, MICROPHONE (MX, E51)

67

4-245-144-01 GUIDE, LED BASS

68

1-827-399-11 WIRE (FLAT TYPE) (3 CORE)

#1

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

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