Philips DVP3350V/01 Service Manual page 32

VCR ELECTRICAL TROUBLESHOOTING GUIDE
5-2. Hi-Fi Playback
PB mode
YES
No Sound.
YES
Check the
Vcc of IC801
(Pins34, 40)
YES
Check the
Hi-Fi Selection switch.
(IC801 Pin41) and the
Tape quality.
YES
Is the RF
Envelope at
IC801 Pin44 over
2Vp-p?
YES
Check IC801
Pin42(Data),
Pin43(Clock)
YES
Do Audio
Signals appear at
IC801 Pin16(L-CH),
17(R-CH)?
YES
Do Audio
Signals appear at
IC802 Pin10(L-CH),
16(R-CH)?
YES
Do Audio
Signals appear at
IC802 Pins11,
16?
YES
Do Audio Signals
appear at JK902?
NO
Check Power 5.0V, 12VT.
NO
Check IC501 Pin26
(A.H/SW)
NO
NO
Check the parts of µ-COM
(IC501 Pins17, 18)
NO
Check the Connection at
P3D01 Pins7, 9.
NO
Check the A.IN line of
IC802(C850, C852)
Check the
NO
Vcc of IC802
Pin13.
Replace IC802.
NO
Check the Jack(JK902)
3-15
NO
YES
Check Power.