Zenith XBV243 series Service Manual page 26

TROUBLESHOOTING (CONTINUED)
( C )
Hi-Fi REC.
It is impossible to record Hi-Fi Audio
signal.
Check Vcc of IC801.(Pins34, 40)
Check IC801 Pin42(Data), Pin43(CLOCK).
Do Audio signals appear at IC801
Pins16, 17?
Do FM Audio signals appear at IC801
Pin36?
Check the Contact Point of Drum
Connector if good then Replace the Drum.
VR168 - 923-03485
ELECTRICAL
YES
YES
YES
YES
YES
YES
NO
Check Power.
NO
Check ports of µ-CPM.
NO
Check Audio input signal of IC801
Pins2, 3(TU.A.), 4, 5(DVD.A.),
6, 7(AVI.A.), 10, 11(AV2.A.)
N O
Replace IC801.
3-14
D35E COMBO - ELECTRICAL