SCD-XB940 - Sony Audio Service Manual (repair manual). Page 66

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16
Pin No.
Pin Name
I/O
Description
53 to 56
I
Test signal input terminal (fixed at “L”)
57, 58
I
Test signal input terminal (fixed at “L”)
59
TESTSOA
O
Test signal output terminal (open)
60 to 64
ADC9 to ADC5
I
Reference voltage input terminal
65
ADC4
I
Spindle error signal input terminal
66
ADC3
I
TE gain control signal input terminal
67
ADC2
I
PI signal input from the SSI33P3722 (IC001)
68
ADC1
I
FE signal input from the SSI33P3722 (IC001)
69
ADC0
I
TE signal input from the SSI33P3722 (IC001)
70
VRTA
I
Reference voltage (top) input terminal (for A/D converter)
71
VCCA1
Power supply terminal (+3.3V) (analog system)
72
TESTA
O
Test signal output terminal (open)
73
GNDA1
Ground terminal (analog system)
74
VRBA
I
Reference voltage (bottom) input terminal (for A/D converter)
75
VSS3V1
Ground terminal (analog system)
76
VDD3V1
Power supply terminal (+3.3V) (analog system)
77
GNDA2
Ground terminal (analog system)
78
VCCA2
Power supply terminal (+3.3V) (analog system)
79
VRT3
I
Reference voltage (top) input terminal (for D/A converter)
80
DAB3
O
Focus coil control signal output to the focus coil drive (IC614)
81
VRB3
I
Reference voltage (bottom) input terminal (for D/A converter)
82
VSS3V2
Ground terminal (analog system)
83
VDD3V2
Power supply terminal (+3.3V) (analog system)
84
VRB2
I
Reference voltage (bottom) input terminal (for D/A converter)
85
DAB2
O
Focus coil control signal output to the focus coil drive (IC614)
86
VRT2
I
Reference voltage (top) input terminal (for D/A converter)
87
VCCA3
Power supply terminal (+3.3V) (analog system)
88
GNDA3
Ground terminal (analog system)
89
GNDA4
Ground terminal (analog system)
90
VCCA4
Power supply terminal (+3.3V) (analog system)
91
VRT1
I
Reference voltage (top) input terminal (for D/A converter)
92
DAB1
O
Tracking coil control signal output to the tracking coil drive (IC614)
93
VRB1
I
Reference voltage (bottom) input terminal (for D/A converter)
94
VSS3V3
Ground terminal (analog system)
95
VDD3V3
Power supply terminal (+3.3V) (analog system)
96
VRB0
I
Reference voltage (bottom) input terminal (for D/A converter)
97
DAB0
O
Tracking coil control signal output to the tracking coil drive (IC614)
98
VRT0
I
Reference voltage (top) input terminal (for D/A converter)
99
VCCA5
Power supply terminal (+3.3V) (analog system)
100
GNDA5
Ground terminal (analog system)
101, 102
I
Test signal input terminal (fixed at “L”)
103
TESTSOB
O
Test signal output terminal (open)
104
PLLMD
I
PLL mode select signal output terminal    Not used (fixed at “H”)
105
TESTB
I
Test signal input terminal (fixed at “L”)
TESTSIA1, 
TESTSIA0
TEST3 to 
TEST0
TESTSIB1, 
TESTSIB0
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