Sony HCD-MD555 Service Manual page 90

Pin No. Pin Name I/O
86 TFDR O
87 DVDD —
88 FFDR O
89 FRDR O
90 FS4 O
91 SRDR O
92 SFDR O
93 SPRD O
94 SPFD O
95 FGIN I
96 TEST1
97 TEST2 I
98 TEST3
99 DVSS —
100 EFMO O
Tracking servo drive PWM signal (+) output to the BH6511FS (IC152)
Power supply terminal (+3.3 V) (digital system)
Focus servo drive PWM signal (+) output to the BH6511FS (IC152)
Focus servo drive PWM signal (–) output to the BH6511FS (IC152)
Clock signal (176.4 kHz) output terminal (X'tal system). Not used in this set (open)
Sled servo drive PWM signal (–) output to the BH6511FS (IC152)
Sled servo drive PWM signal (+) output to the BH6511FS (IC152)
Spindle servo drive PWM signal (–) output to the BH6511FS (IC152)
Spindle servo drive PWM signal (+) output to the BH6511FS (IC152)
FG signal output. Not used in this set (fixed at "L")
TEST input terminals (fixed at "L")
Ground terminal (digital system)
The record EFM signal output to the over-write head driver (IC181)
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Description