Panasonic PV-DAC10, Service Manual

Page: 142 / 195

6-16
TROUBLESHOOTING HINTS
Check if the PB picture is output to
DV connector.
Check ENV signal at Pin 13 of FP5
on Main C.B.A.
(Use Pin 3 of FP5 on Main C.B.A.
as a trigger.)
Perform head cleaning.
NG
Check ENV signal at Pin 13 of FP5
on Main C.B.A. again.
Check IC5001 and surrounding
parts on Head Amp C.B.A.
Check IC5001 and surrounding
parts on Head Amp C.B.A.
Replace Cylinder Unit.
Check if the Flexible cable is
correctly connected to FP5 on Main
C.B.A. and/or it is not damaged.
Check signal at Pin 6 of IC3204 on
Main C.B.A.
Check PB data at Pin 9 of FP5 on
Main C.B.A.
Pin 13 of FP5 on
Main C.B.A.
Check PB data at Pin 8 of IC3203
on Main C.B.A.
Check if 41.85MHz Clock is correct
at TP3206 on Main C.B.A.
Replace IC3201. Replace IC3204.
Check IC5001 and surrounding
parts on Head Amp C.B.A.
NG
NG OK
OK
OK
OK
OK
OK
Replace Cylinder Unit.
OK
OK
Check PB data at TP3207 on
Main C.B.A.
OK
Replace IC3201 on Main C.B.A.
OK
OK
No Signal
Abnormal ENV Signal
OK
Check IC3201, IC3001, and
surrounding parts on Main C.B.A.
Perform "Tape Path Alignment with
L.I.S.T.A."
If not, perform Envelope Adjustment.
NG
Check IC3204 and surrounding
parts on Main C.B.A.
Check IC3203 and surrounding
parts on Main C.B.A.
NG
NG
NG
1. No Picture or abnormal picture when playbacking
Pin 6 of IC3204
on Main C.B.A. Pin 9 of FP5
on Main C.B.A. Pin 8 of IC3203
on Main C.B.A. TP3206 on Main
C.B.A. (OK)
TP3206 on Main
C.B.A. (NG)
NO SIGNAL
OR
TP3207
on Main C.B.A.