Sony Mz-G750 Service Manual page 34

MZ-G750/R700
Pin No. Pin Name
224 – 226 (XAVLS), (SOUND 1, 2)
227 XHOLD SW
228 (SYCN REC)
229 NC
230 PROTECT
231 FLASHVDD
232 FLASHVSS
233 SLD MON
234 VLON
235 SLEEP
236 FFCLR
237 CHG GAIN
238 CHG
239 (TUN REG ON)
240 XHP STBY
241 MIFVDD3
242 MIFVSS2
243 TEST2
244 NC
34
I/O
I Not used (open)
I HOLD switch input terminal "L": hold ON, "H": hold OFF
I SYNCHRO REC switch input terminal "L": OFF, "H": ON Not used (open)
O Not used (open)
Detection input terminal of the record check claw from the protect detection switch
I
(S803) "L": recording possible condition, "H": protect
— Power supply terminal (for the internal FLASH ROM) (+2.4 V)
— Ground terminal (for the internal FLASH ROM)
I Sled servo monitor signal input from the motor driver (IC551)
Power supply control signal output for the laser diode drive to the power
O
control (IC901)
O System sleep control signal coutput to the power control (IC901) "H": sleep ON
O Input latch output for the start switching to the power control (IC901)
O Charge gain control signal output to the power control (IC601)
O Charge ON/OFF control signal output to the power control (IC601) "H": charge ON
O Not used (open)
O Headphone standby signal output to the headphone amp (IC302)
— Power supply terminal (for the microcomputer I/F block) (+2.3 V)
— Ground terminal (for the microcomputer I/F block)
O Input terminal for the main test (normally open)
— Not used (open)
Description