Sanyo PLC-XP21N Service page 24

ASS'YA/V ASS'YAUD)0
1. Check that the Vcc-voItage(Pinl6 of IC5001 +9V) is correct.
2. Check that the Audio Setect signal is correct.
Pin9,10ofIC5001 . . . . . . . . . . . . . . . . . . . . . - - - - . . p ; n 9 :10
AV L : H
PC2 H : L
PC1 L ; L
3. Check the input and output signals at IC5001.
4. Check the input and output signals at K1H, K10L, K10N,
K10M.
ASS'YMA)N
1 - Check the input and output signals at Pin49-52 of K8B and
Pinl.3ofK.8F.
2- Check that the Power Fait signal is correct (Pin5 of K8C and
Pinl30ofIC80I).
3. Check that the Audio Mute signal is correct (Pin5 of K8F and
Pin28ofIC809).
4. Check that the Vo)ume AV signa! is correct (Pin4 of K8F and
Pin4of!C401).
5. Check that the Audio Select signats afc correct (Pin29-32 of
K8B and Pin29, 30 of IC8IO). . . . . . . . . . . . IC8IO Pin 30 :29
AV L : H
PC2 H : L
PC1 L : L
1. Check that the Vcc-voltages are correct (Pin9 of IC1652 and
P:nl2of IC1651).
2- Check the Audio signals at Pint, 3 of K16FF and Pin2, 15 of
IC1652.
3- Check the Audio signals at Pin7, 10 of IC1652 and Pin5, 8 of
JC165J.
4. Check the Audio Output signals at Pin2, 11 of tC1651 and
Pml,3ofK16T.
5. Check that the Power Fait signa! is cornet (Pm8 of K16BB).
6. Check that the Audio Mute signa! is correct (Pin5 of K16FF
and Pin3.14 of IC1652).
7. Check that the Vohme AV signal is correct (Pin4 of K16FF
and Pinl2 of IC1652).
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