Toshiba 19LV505 Service Manual page 66

THE PICTURE APPEARS,
BUT THE AUDIO DOES NOT
APPEARS. (AT RF MODE)
Is CD301 connected?
Yes
Is there signal at pins 1
and 4 of CD301?
No
Is there signal at pins 2
and 4 of IC301?
No
Is there signal at pins
AA3 and AA4 of IC2801?
No
Is there signal at pins 1
and 2 of IC6551?
No
Is there signal at pin
3 of IC6552,IC6553?
No
Is there signal at pin
5 of TU5801?
No
Change TU5801.
TROUBLESHOOTING GUIDE
No
Yes
Yes
Yes
Yes
Yes
Yes
Connect CD301.
Change SP301 and SP302.
Check IC301 and peripheral
circuit.
Check Connection of CP4301.
Check IC6551 and
peripheral circuit.
Check IC6552,IC6553 and
peripheral circuit.
Check IC5801 and peripheral
circuit.
E-2 19LV505/19LV506/22LV505