Sony PMC-MD55 Service Manual page 187

Pin No. Pin Name
87 REC/PB
88 NC
89 SCTX
90 XLATCH
91, 92 NC
93 AMUTE
94 LDOUT
95 LDIN
96 LIMIT-IN
97 PROTECT
98 REFLECT
99 GND
100 +3.3V
*1 Loading motor (M103) control
Mode
LOADING
Terminal
LDIN (pin (∞)
LDOUT (pin (¢)
I/O
O Not used (open)
— Not used (open)
Recording data output enable signal output to the CXD2654R (IC121) and overwrite head
O
driver (IC181) Writing data transmission timing output (Also serves as the magnetic head on/off
output)
O Serial data latch pulse signal output to the CXD2654R (IC121)
— Not used (open)
O Muting control signal output terminal Not used (open)
O
Motor control signal output to the loading motor driver (IC602) "L" active *1
O Motor control signal output to the loading motor driver (IC602) "L" active *1
Detection input from the sled limit-in detect switch (S101)
I
The optical pick-up is inner position when "L"
I
Rec-proof claw detect input from the protect detect switch (S102-2) "H": write protect
Detection input from the disc reflection rate detect switch (S102-1)
I
"L": high reflection rate disc, "H": low reflection rate disc
— Ground terminal
— Power supply terminal (+3.3V)
EJECT BRAKE
"L" "H"
"H" "L"
Description
RUN IDLE
"L" "H"
"L" "H"
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