Sony MDS-EX77, Service Manual

Page: 62 / 73

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Pin No. Pin Name I / O Function
82
BEEP O Beep sound drive signal output terminal Not used (open)
83 ADARES O
Reset signal output to the A/D, D/A converter (IC201) “L”: reset
84 SWL-A
O Not used (open)
85 SEL-B O
Not used (open)
Laser modulation select signal output
Playback power: “L”, Stop: “H”,
Recording power:
86 MOD
O
87 REC/PB O
Not used (open)
88 NC
— Not used (open)
89 SCTX O
Recording data output enable signal output to the CXD2650R (IC121)
Writing data transmission timing output (Also serves as the magnetic head on/off output)
90 XLATCH
O Serial latch signal output to the CXD2650R (IC121) and A/D, D/A converter (IC201)
91 NC
— Not used (open)
92 NC
— Not used (open)
93 MUTE O
Line mute control signal output to the CXA8065S (IC101)
94 LDOUT
O Motor control signal output to the loading motor driver (IC311) *1
95 LDIN O
Motor control signal output to the loading motor driver (IC311) *1
96 LIMIT-IN
I
Detection input from the sled limit-in detect switch (S681)
The optical pick-up is inner position when “L”
97 PROTECT I
Rec-proof claw detect input from the protect detect switch (S683) “H”: write protect
98 REFLECT I
Detection input from the disc reflection rate detect switch (S682)
“L”: high reflection rate disc, “H”: low reflection rate disc
99 GND
— Ground terminal
100 +3.3V
— Power supply terminal (+3.3V)
2 sec
0.5 sec
*1 Loading Motor Control
I N OUT BRAKE RUN IDLE
LDIN (pin
(∞
)
“H” “L” “H” “L”
LDOUT (pin
(¢
)
“L” “H” “H” “L”
Terminal
Operation