Reading Ok Check #C(=“No Disc” Display) - LG LPC-LM340X Service Manual

• READING OK CHECK #C(="NO DISC" DISPLAY)
C
IC ?V APPLIED TO PIN 10 OF PN501
LASER SUPPLY VOLTAGE CHECK
YES
CHECK PN501 CONNECTOR LINE
NO
IS 3.3V APPLIED TO
PIN3 OF IC502
RF IC SUPPLY VOLTAGE
CHECK
YES
IS 2.0V PIC2 OF IC502
LASER CONTROL
VOLTAGE CHECK
NO
NO
- 2-8 -
NO
DEFECTIVE IC501
NO
DEFECTIVE IC501
NO
DEFECTIVE IC503
DEFECTIVE PN501
CONNECTOR
DEFECTIVE PICUP
FOCUS ACTUATOR