Sony SCD-XB940, Service Manual

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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