MDS-JE530 - Sony Audio Service Manual (repair manual). Page 52

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Pin No.

Pin Name

I/O

Description

78

MNT0 (FOK)

I

Focus OK signal input from the CXD2656R (IC121)
“H” is input when focus is on (“L”: NG)

79

SCL

O

Clock signal output to the EEPROM (IC171)

80

SCTX

O

Recording data output enable signal output to the CXD2656R (IC121) and overwrite head
driver (IC181)    Writing data transmission timing output (Also serves as the magnetic head on/off 
output)

81

CLOCK SET0

I

Destination setting terminal (US, Canadian and Singapore models: fixed at “L”, AEP, UK and 
North European models: fixed at “H”)

82

CLOCK SET1

I

Destination setting terminal (US, Canadian and Singapore models: fixed at “H”, AEP, UK and 
North European models: fixed at “L”)

83

LED0

O

LED drive signal output terminal    Not used (open)

84

LED1

O

LED drive signal output terminal    Not used (open)

85, 86

NC

O

Not used (open)

87

MODEL SEL0

I

Setting terminal for the model (fixed at “L” in this set)

88

MODEL SEL1

I

Setting terminal for the model (fixed at “L” in this set)

89, 90

NC

O

Not used (open)

91

TIMER

I

TIMER switch (S751) input terminal (A/D input)
“L”: PLAY, “H”: REC (OFF: center voltage)

92

SOURCE

I

INPUT switch (S741) input terminal (A/D input)

93

KEY3

I

Key input terminal (A/D input)    S731 and S732 (TIME, FADER keys input)

94

KEY2

I

Key input terminal (A/D input)    S721 to S726 (

§ EJECT, PLAY MODE, REPEAT, SCROLL, 

LEVEL/DISPLAY/CHAR, I/

u keys input)

95

KEY1

I

Key input terminal (A/D input) 
S711 to S714 (MENU/NO, YES, PUSH ENTER, CLEAR keys input)

96

AVSS

—

Ground terminal

97

KEY0

I

Key input terminal (A/D input)    S701 to S706 (REC 

r , p, ), 0, P, · keys input)

98

VREF

I

Reference voltage (+3.3V) input terminal (for A/D converter)

99

+3.3V

—

Power supply terminal (+3.3V) (for analog system )

100

MONO/ST

I

REC MODE switch (S746) input terminal    “L”: MONO, “H”: STEREO