Pin No.

Pin Name

 

I/O

Function

 

 

 

 

 

79

DCHG

 

I (A)

Connected to the Ground

 

 

 

 

 

80

APC

 

I (A)

Input terminal for the laser APC Not used this set (Fixed at “L”)

81

TEST1

 

I

Test input terminal (Fixed at “L”)

 

 

 

 

 

82

ADFG

 

I

ADIP double turned FM signal input from CXA1981AR (IC100)

 

(22.05kHz ± 1kHz) (TTL schmitt input)

 

 

 

 

83

TS25

 

I

Test input terminal (Fixed at “L”)

 

 

 

 

 

84

LDDR

 

O

Laser APC signal output to CXA1981AR (IC100)

 

 

 

 

 

85

TRDR

 

O

Tracking servo drive signal outuput (–)

86

TFDR

 

O

Tracking servo drive signal outuput (+)

 

 

 

 

 

87

FFDR

 

O

Focus servo drive signal output (+)

 

 

 

 

 

88

DVDD1

 

Power supply terminal (+3.3V) (Digital system)

 

 

 

 

 

89

FRDR

 

O

Focus servo drive signal output (–)

 

 

 

 

 

90

FS4

 

O

176.4kHz clock signal output (MCLK system) Not used this set (OPEN)

 

 

 

 

 

91

SRDR

 

O

Sled servo drive signal output (+)

92

SFDR

 

O

Sled servo drive signal output (–)

 

 

 

 

 

93

SPRD

 

O

Spindle servo drive signal output (+)

 

 

 

 

 

94

SPFD

 

O

Spindle servo drive signal output (–)

95

DCLO

 

O

Not used (OPEN)

 

 

 

 

 

96

DCLI

 

I

Not used (Fixed at “H”)

 

 

 

 

 

97

XDCL

 

O

Not used (OPEN)

 

 

 

 

 

98

OFTRK

 

O

Offtrack signal output Not used this set (OPEN)

 

 

 

 

 

99

COUT

 

O

Traverse count signal output Not used this set (OPEN)

 

 

 

 

 

100

DVSS2

 

Ground terminal (Digital system)

 

 

 

 

 

*: On I/O section

 

 

 

(3): 3 state output

(A): Analog output

– 36 –

Page 22
Image 22
Sony MDX-61 service manual Dchg, TEST1, Lddr, Ffdr, DVDD1, FS4, Srdr, Sfdr, Sprd, Spfd, Dclo, Dcli, Xdcl, DVSS2