Panasonic PV-D4733S-K Service Manual page 270

Cause: Spindle Motor Problem
Check the signal at TP8808 (SPIN) on the DVD Main
C.B.A.
OK
Replace IC8801 on the DVD Main C.B.A.
Still NG
DVD Mechanism Unit is defective.
Replace the DVD Mechanism Unit.
Cause: Traverse Problem
Check the signal at TP8801 and TP8802 on the DVD
Main C.B.A.
NG
Check the signal at TP8814 on the DVD Main C.B.A.
NG
IC8001 on the DVD Main C.B.A. is defective.
Replace IC8001 on the DVD Main C.B.A.
V1 1.8 Vp-p V1 2.0 Vp-p
2 V 5 ms 2 V 5 ms
TP8801 TP8802
NG IC8001 on the DVD Main C.B.A. is defective.
Replace IC8001 on the DVD Main C.B.A.
OK DVD Mechanism Unit is defective.
Replace the DVD Mechanism Unit.
OK IC8801 on the DVD Main C.B.A. is defective.
Replace IC8801 on the DVD Main C.B.A.
V1 0.5 Vp-p
1 V 5 ms
TP8814
Cause: Pickup Problem
Check the voltage at TP8954 on the DVD Main C.B.A.
Is it +5.0 V ?
Check the voltage at TP8971 on the DVD Main C.B.A.
Is it +2.2 V ?
OK
DVD Mechanism Unit is defective.
Replace the DVD Mechanism Unit.
If the Message "PLEASE CHECK THE DISC, AND
FOR STAINS OR SCRATCHES ON DISC" appears.
IC8801 on the DVD Main C.B.A. is defective.
Replace IC8801 on the DVD Main C.B.A.
If the Message "PLEASE CHECK THE DISC, AND
FOR STAINS OR SCRATCHES ON DISC" appears.
IC8001 on the DVD Main C.B.A. is defective.
Replace IC8001 on the DVD Main C.B.A.
NG
Replace the IC8801 on the DVD Main C.B.A.
TROUBLESHOOTING HINTS
PV-D4733S/PV-D4743/PV-D4743S/PV-D4743S-K