No sound
Check following steps.
Check IC5101 <Audio Selector> and Audio Input stage and peripheral
circuit.
Check 12V_AUDIO power supply.
Check if the audio sig-
nal is observed at pins 7
and 15 of IC5101.
Yes
No
Check Audio Output circuit or Muting circuit.
The Mute signal is output from pin 137 of IC401<DLP Data Processor>.
The OUT_DET signal is sent from Audio Out terminal.
Mute-On: H at pin 137 of IC401, L at pin 1 of IC001
Check IC001 <Audio Output> or speaker drive circuit and peripheral cir-
cuit. Check 16VA power supply and the speaker terminal connection.
Check if the audio sig-
nal is observed at pin 3
of IC001.
Check IC5101 and peripheral circuit.
No
Yes
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