Sharp LC-37D90U Service Manual page 97

Error type
Time-out setting reception failu
Start-up confirmation reception failure
Flashes twice
Regular communication failure
Flashes 3 times
Power red LED operation (1 cycle)
H: On
L: Off
H: On
L: Off
6 – 18
Basically, communication logs are analyzed by a bus
monitor or debug print logs are analyzed.
Time-out setting and start-up mode change cannot be
received from the main CPU. (Start-up communication until
time-out setting and start-up mode change is not received.)
Main CPU start-up failure or monitor microprocessor's recep-
tion failure.
Regular communication that is performed at 1 second inter-
vals in the normal operation is interrupted.
Main CPU operation failure or monitor microprocessor's
reception failure.
LC-37D90U