CMT-CP11, CMT-CP11K, HCD-CP11 - Sony Audio Service Manual (repair manual). Page 29

29

Pin No.

Pin Name

I/O

Description

30

RDS-ON

O

Power supply on/off control signal output of the tuner pack (+7.5V) and RDS decoder (IC804) 
(RDS decoder: used for the AEP and UK models only)
LED drive signal output of the TUNER indicator (D855)    “H”: tuner power on (LED on)

31

HP-CHK

I

Headphone check detection signal input terminal

32

TC-SW

I

Half detect (side A and B) switch and cassette in detect switch input terminal (A/D input)

33

TRAY-SW

I

Disc tray position detect switch (S901, 902) input terminal (A/D input)
 “L”: close position, “M”: open position, “H”: moving

34

KEY3

I

Key input terminal (A/D input)    S817 to S822, S824 and S825 (STANDBY I/

u, CD, TUNER, 

TAPE, MD/VIDEO, DSG, TUNER BAND, CD SYNC keys input)

35

KEY2

I

Key input terminal (A/D input)    S801 to S808 (TUNING MODE, CD 

^/p/+/=, PLAY 

MODE, REPEAT, CD EJECT 

6 keys input)

36

KEY1

I

Key input terminal (A/D input)
S809 to S816 (TAPE 

9 (/p/)/0/P, REC r, TUNING +/– keys input)

37

SIMUKE

I

Destination setting terminal (A/D input)

38

RESET

I

System reset signal input from the reset signal generator (IC803)    “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”

39

EXTAL1

I

Main system clock input terminal (4.19 MHz)

40

XTAL1

O

Main system clock output terminal (4.19 MHz)

41

VSS

—

Ground terminal

42

XTAL2

O

Sub system clock output terminal (500 kHz)    Not used (open)

43

EXTAL2

I

Sub system clock input terminal (500 kHz)    Not used (fixed at “L”)

44

AVREF

I

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

45

AVSS

—

Ground terminal (for A/D conversion)

46

VL

O

Liquid crystal display bias on/off control signal output terminal

47 to 49

VLC3 to VLC1

—

Power supply terminal for the liquid crystal display bias

50 to 53

COM0 to COM3

O

Common drive signal output to the liquid crystal display (LCD801)

54 to 85

SEG0 to SEG31

O

Segment drive signal output to the liquid crystal display (LCD801)

86

REC-BIAS

O

Recording bias on/off selection signal output to the HA12203NT (IC352)
“L”: bias on, “H”: bias off

87

REC-MUTE

O

Recording muting on/off selection signal output to the HA12203NT (IC352)
“L”: muting on, “H”: muting off

88

DOLBY

O

Dolby NR on/off selection signal output to the HA12203NT (IC352)
“L”: dolby on, “H”: dolby off

89

VDD

—

Power supply terminal (+5V)

90

NC

—

Connected to power supply (+5V)

91

VSS

—

Ground terminal

92

TX

O

Sub system clock output terminal (32.768 kHz)

93

TEX

I

Sub system clock input terminal (32.768 kHz)

94

CD-ON

O

Power supply on/off control signal output of the CD block (+5V)
LED drive signal output of the CD indicator (D852)    “H”: CD power on (LED on)

95

REC/PB

O

Recording/playback selection signal output to the BA3126N (IC350) and HA12203NT (IC352)
“L”: playback mode, “H”: recording mode

96

L-MUTE

O

Line muting on/off selection signal output to the HA12203NT (IC352)
“L”: muting on, “H”: muting off

97

LINE OUT-MUTE

O

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

98

TC-ON

O

Power supply on/off control signal output of the cassette holder back light
LED drive signal output of the TAPE indicator (D854)    “H”: back light on (LED on)

99

WP

I

Wakeup control signal input terminal

100

CD-SCOR

I

Subcode sync (S0+S1) detection signal input from DSP on the CD block (at CD function)