CMT-PX333, HCD-PX333 - Sony Audio Service Manual (repair manual). Page 91

91

Pin No.

Pin Name

I/O

Description

46

MD/CD POWER

O

Power down detection signal output to the MD mechanism controller (IC1001) and CD
mechanism controller (IC1101)

47

TR RELAY

O

Standby relay (RY991) control signal output    (“L”: standby, “H” : power on)

PC LINK/KEY BOARD (CN104) ON/OFF control signal output    (“H”: on, “L” : off)

48

RECMUTE

O

Muting on/off control signal output of tape output signal    “L”: muting on

49

DIMMER

O

LCD back light on/off control signal output    “H”: LED on

50

GC POWER

O

Not used (open)

51

KBD CHK

I

Key board check signal input terminal

52

LED MD-PAUSE

O

LED drive signal output of the X (MD) indicator (D605)    “H”: LED on

53

LED MD-PLAY

O

LED drive signal output of the N (MD) indicator (D604)    “H”: LED on

54

LED CD-PAUSE

O

LED drive signal output of the X (CD) indicator (D603)    “H”: LED on

55

LED CD-PLAY

O

LED drive signal output of the N (CD) indicator (D602)    “H”: LED on

56

LED MD-REC

O

LED drive signal output of the REC indicator (D606)    “H”: LED on

57

LED STANDBY

O

LED drive signal output of the I/1  indicator (D601)    “H”: LED on

58

BVDD

—

Power supply terminal (+5V)

59

BVSS

—

Ground terminal

60

LED DATA

O

Serial data output terminal for LED driver    Not used (open)

61

LED CLK

O

Serial data transfer clock signal output terminal for LED driver    Not used (open)

62

LED CE1

O

Chip select signal output terminal for LED driver    Not used (open)

63

LED CE2

O

Fan motor (M901) drive signal output   “H”: fan motor on

 

64

LED CLEAR

O

Reset signal output terminal for LED driver    Not used (open)

65, 66

FUNC1, FUNC2

O

Function selection signal output terminal    Not used (open)

67

HEADPHONE IN

I

Headphone in detection signal input    “H”: headphone in

68

ENC VOL A

I

Jog dial pulse input from the rotary encoder    A phase input    Not used (fixed at “L”)

69

ENC VOL B

I

Jog dial pulse input from the rotary encoder    B phase input    Not used (fixed at “L”)

70

ENC JOG 1A

I

Jog dial pulse input from the rotary encoder    A phase input    Not used (fixed at “L”)

71

ENC JOG 1B

I

Jog dial pulse input from the rotary encoder    B phase input    Not used (fixed at “L”)

72, 73

DEVICE3,

DEVICE2

—

Not used (fixed at “L”)

74

AVDD

—

Power supply terminal (+5V)

75

AVSS

—

Ground terminal

76

AVREF

I

Reference voltage (+5V) input terminal

77, 78

LID SW1,

LID SW2

I

Switch input terminal    Not used (fixed at “L”)

79 to 82

DIST 1 to DIST 4

I

Model destination setting terminal

83

LEVEL-L

I

L-ch level input terminal    Not used (fixed at “L”)

84

LEVEL-R

I

L-ch level input terminal    Not used (fixed at “L”)

85

KEY1

I

Key input terminal (A/D input)    S601 to S606  (I/1, x (CD), N X CD, M >,  
TUNING +, VOLUME –, VOLUME + keys input)

86

KEY2

I

Key input terminal (A/D input)    S621 to S628 (. m TUNING –, FUNCTION,  
PLAY MODE TUNING MODE, REPEAT STEREO/MONO, REC MODE, REC/REC IT, 
CD SYNC NORMAL, CD SYNC HIGH keys input)

87

KEY3

I

Key input terminal (A/D input)    S631 to S637 (Z MD, x (MD), . m, N X MD, 
M >, Z CD, TUNER/BAND keys input)

88

KEY4

I

Key input terminal (A/D input)    Not used (fixed at “H”)

89

NMI

I

Non-maskable interrupt input terminal    Fixed at “L” in this set

90

KBD CLK

I

Key board data reading clock signal input terminal

91

KEY RM INT

I

Interrupt signal input from function keys or remote control receiver