Signals And Abbreviations - Philips CDR880 Service Manual

SIGNALS AND ABBREVIATIONS
SIGNAL NAME _| SIGNAL FLOW
Power supply +12V for op-amps
Power supply +4V for servo microcontroller
Analog power supply +5V
Digital power supply +5V
Power supply +5V for Connector Part
Power supply turntable motor control circuit
Power supply User processsor & memories
Power supply -12V for op-amps
Power supply -8V
IC7170—>CONN.1101 Calculation 8 and HFO
Positive peak detector between CA and CALF
+ lt (t+ i+ ]+
ZIZlEligliv
lout') <<
fom')
>
B| Bl Zelalelala
>IS/2)a/<|<
a) |=|9
1C7170—>CONN.1101 Beta = (A1-A2)/(A1+A2)
Negative peak detector between CA and CALF
d
1C7440-1C7480
CLWP 1IC7170—1C7245 P clock Atip information CDCEP |
Communication clock for data transfer from user
1C7320<2CONN. 1300 microprocessor
COMSYNC 1C7320<91C7170 Communication synchronisation from user microprocessor |
1C7320eCONN.1300
CRIN 1C7440—1C7210 GDIN clock1 out: system clock for decoder CD60 |
CSEXP 1IC7320—1C7323 Chip Select Expander
PCS 83 976