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– 63 –

85

PLL CE

O

PLL serial chip enable output to the FM/AM PLL (IC100)

86

HSTX

I

Hardware standby input terminal    Not used (open)

87

MD2

I

Mode selection input terminal (fixed at “L”)

88

MD1

I

Mode selection input terminal (fixed at “H”)

89

MD0

I

Mode selection input terminal (fixed at “H”)

90

RESET

I

System reset signal input from the reset signal generator (IC801) and reset switch (S900)
“L” is input for several 100 msec after power on, then it changes to “H”

91

VSS

—

Ground terminal

92

X0

I

Main system clock input terminal (3.68 MHz)

93

X1

O

Main system clock output terminal (3.68 MHz)

94

VCC

—

Power supply terminal (+5V)

95

PW SEL

I

Power select switch (S700) input terminal    “L”: on (operation mode), “H”: off (halt mode)

96

POL MONO

I

Polar monaural detection signal input terminal    Not used (open)

97 to 99

NC

O

Not used (open)

100

BAND

(9K-10K)

I

Frequency select switch (S701) input terminal   “H”: MW 9k step/FM 50k step, “L”: MW10k
step/FM 200k step    Used for the E model only

101

NC

O

Not used (open)

102

RAMBU

I

103

NC

O

Not used (open)

104

LCD CE

O

Chip enable output to the liquid crystal display driver (IC801)

105

FLASH W

I

Fixed at “H” in this set

106

REIN0

I

Rotary encoder (EN801) input for volume/bass/treble/balance/fader control

107

REIN1

I

Rotary encoder (EN801) input for volume/bass/treble/balance/fader control

108

LAMP ON

(ILL ON)

O

109

PW ON

O

Main system power supply on/off control signal output to the BA3918 (IC800)    “H”: power on

110

FM ON

O

FM system power supply on/off control signal output to the BA3918 (IC800)    “H”: FM on

111

TUN ON

O

Tuner system power supply on/off control signal output to the BA3918 (IC800)    “H”: tuner on

112 to 118

NC

O

Not used (open)

119

VSS

—

Ground terminal

120

NC

O

Not used (open)

Internal RAM reset detection signal input from the RN5VD23AA (IC802)
Input terminal to check that RAM data are not destroyed due to low voltage
This checking is made within 100 msec after reset

Power supply on/off control signal output terminal at the illumination and liquid crystal display
driver (IC801)    “H”: power on
At power select switch (S700) on mode: “H” output at the accessory on
At power select switch (S700) off mode: “H” output at the power on

– 64 –

Les composants identifiés par une
marque 0 sont critiquens pour la
sécurité.
Ne les remplacer que par une pièce
portant le neméro spécifié.

The components identified by
mark 0 or dotted line with mark

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

• 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

3-919-344-51 DOOR (MD) (C7900)

1

3-919-344-61 DOOR (MD) (C7900R)

2

3-919-343-01 SPRING (DOOR), TORSION

3

3-023-606-01 PANEL, SUB

4

X-3367-636-1 LOCK ASSY

* 5

X-3373-358-1 CHASSIS ASSY

* 6

A-3294-393-A MAIN BOARD, COMPLETE (C7900R: AEP, UK)

* 6

A-3294-394-A MAIN BOARD, COMPLETE (C7900R: German)

* 6

A-3294-410-A MAIN BOARD, COMPLETE

(C7900: US, Canadian)

* 6

A-3294-412-A MAIN BOARD, COMPLETE (C7900: E)

* 7

3-022-317-01 BRACKET (AMP)

* 8

3-011-078-01 BRACKET (POWER IC)

* 9

3-023-604-01 HEAT SINK

10

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

11

3-932-860-01 SCREW (2.6X4) (C TIGHT), +PTT

* 12

X-3373-362-1 COVER ASSY

13

1-776-207-71 CORD (WITH CONNECTOR) (POWER) (C7900)

13

1-776-527-71 CORD (WITH CONNECTOR) (ISO) (POWER)

(C7900R)

14

3-011-999-01 CUSHION (MD)

* 15

3-014-156-01 SHEET (INSULATING)

* 16

3-355-209-01 PLATE (B), GROUND

* 17

3-937-122-01 HEAT SINK

F1

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

– 65 –

Ref. No.

Part No.

Description

Remark

Ref. No.

Part No.

Description

Remark

51

3-023-611-01 BUTTON (10KEY)

(OFF. SHIFT. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10)

52

X-3375-315-1 PANEL ASSY, FRONT (C7900)

52

X-3375-409-1 PANEL ASSY, FRONT (C7900R)

53

3-023-617-01 BUTTON (RELEASE)

54

3-008-667-01 SPRING (RELEASE)

55

3-023-626-01 BUTTON (SOURCE)

56

3-023-612-01 KNOB (VOL)

57

3-023-613-01 KNOB (AMS) (C7900)

57

3-023-613-31 KNOB (AMS) (C7900R)

58

3-023-615-01 RING, LIGHT GUIDE

59

3-023-629-01 BUTTON (MODE)

60

3-023-616-01 BUTTON (SOUND)

61

3-023-618-01 PLATE (L), LIGHT GUIDE

62

3-023-619-01 PLATE (R), LIGHT GUIDE

* 63

3-023-610-01 PLATE (LCD), GROUND

* 64

3-023-621-01 SHEET (LCD)

* 65

3-023-624-01 ILLUMINATOR (LCD)

* 66

3-023-609-01 PLATE (LCD), LIGHT GUIDE

* 67

3-023-608-01 HOLDER (LCD)

68

3-023-605-01 PANEL, BACK

69

3-023-625-01 KNOB (D)

70

3-023-622-01 BUTTON (EJ) (Z. PTY. AF/TA. DSPL) (C7900R)

70

3-023-627-01 BUTTON (EJ) (Z. LIST. DSPL) (C7900)

LCD801 1-803-111-11 DISPLAY PANEL, LIQUID CRYSTAL

– 66 –

Ref. No.

Part No.

Description

Remark

Ref. No.

Part No.

Description

Remark

* 101

A-3313-612-A SERVO BOARD, COMPLE

* 102

X-3369-440-1 CHASSIS ASSY, MD

103

3-919-296-01 SPRING (FL), TENSION

104

3-921-111-01 SPRING (FL2), TENSION

105

3-919-273-01 DAMPER, OIL

* 106

X-3369-444-1 HOLDER ASSY

107

3-919-319-01 SPRING (HOLDER)

108

3-919-320-01 SPRING (SUB HOLDER)

* 109

3-919-436-01 CUSHION (EJ)

* 110

3-919-280-01 LEVER (LOCK R)

111

3-919-281-01 SPRING (CHKG)

* 112

X-3369-441-1 COVER ASSY, MD

113

3-342-940-01 WASHER (M)

* 114

X-3369-445-1 LEVER (LE) ASSY

115

3-919-274-01 SPRING (LE)

116

3-925-034-01 ROLLER (GLE)

* 117

X-3369-443-1 ARM ASSY, CHUCKING

* 118

3-919-279-01 LEVER (LOCK L)