Read Sony DHC-EX77MD / DHC-MD77 / MDS-EX77 / MDS-EX770 Service Manual online
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Pin No. Pin Name
I / O
Function
85
TRDR
O
Tracking servo drive PWM signal (–) output to the BH6511FS (IC152)
86
TFDR
O
Tracking servo drive PWM signal (+) output to the BH6511FS (IC152)
87
DVDD
—
Power supply terminal (+3.3V) (digital system)
88
FFDR
O
Focus servo drive PWM signal (+) output to the BH6511FS (IC152)
89
FRDR
O
Focus servo drive PWM signal (–) output to the BH6511FS (IC152)
90
FS4
O
Clock signal (176.4 kHz) output terminal (X’tal system) Not used (open)
91
SRDR
O
Sled servo drive PWM signal (–) output to the BH6511FS (IC152)
92
SFDR
O
Sled servo drive PWM signal (+) output to the BH6511FS (IC152)
93
SPRD
O
Spindle servo drive PWM signal (–) output to the BH6511FS (IC152)
94
SPFD
O
Spindle servo drive PWM signal (+) output to the BH6511FS (IC152)
95
TEST0
I
96
TEST1
I
97
TEST2
I
98
TEST3
I
99
DVSS
—
Ground terminal (digital system)
100
EFMO
O
EFM signal output terminal when recording mode
* I (A) for analog input, O (3) for 3-state output, and O (A) for analog output in the column I/O.
Input terminal for the test (fixed at “L”)
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