No Sound - Eiki LC-WB200 Service Manual
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Also See for LC-WB200:
- Owner's manual (80 pages) ,
- Owner's manual (60 pages) ,
- Owner's manual (80 pages)
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Troubleshooting
No Sound
Check following steps.
Check if the audio sig-
nal is observed at pins
19 and 23 of IC5001.
Yes
Check if the audio sig-
nal is observed at pins 1
and 7 of IC5003.
Yes
Check if the audio sig-
nal is observed at pins
36 and 42 of IC001.
Yes
Check audio output circuit.
Check speaker, connection of the terminal "K8F".
Check IC5001 and peripheral circuit.
No
Check the Pins 7 and 3 of IC5001, the voltage is respectively S3.3V
and S1.8V.
Check IC500<Audio SW> and peripheral circuit.
Video: Pin 9: L, Pin 10: H
PC1: Pin 9: L, Pin 10: L
HDMI: Pin 9: H, Pin 10: L
Check IC5003 and peripheral circuit.
No
Check S-7V at pin 4 of IC5003 and S5V at pin 8 of IC5003 power sup-
ply.
Check IC001 and peripheral circuit.
No
Check the Mute signal at pin 1 of IC001. The Mute signal is output from
pin 350 of IC 301<Scaler>. The OUT_DET signal is sent from Audio Out
terminal.
Mute-On: H at pin 350 of IC301, L at pin 1 of IC001.
Check the AMP-STBY signal at pin of IC001. The AMP-STBY signal is
output from pin 345 of IC301.
AMP-STBY signal: H at normal, L: Mute-on
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