Sharp LC-42D65U Service Manual page 57

2) Power failure details (Power LED flashes twice and OPC LED flashes)
Error type
PS_ON
DET_15V failure
Flashes once
DET_D3V3 failure
Flashes twice
DET_5V failure
Flashes 3 times
PNL_12V failure
Flashes 5 times
Main failure
Flashes 7 times
LCD TCON ROM failure
Flashes 8 times
3) Communication failure details (Power LED flashes 3 times and OPC LED flashes)
Error type
Initial communication
reception failure
Flashes once
Time-out setting reception failure
Start-up confirmation reception failure
Flashes twice
Regular communication failure
Flashes 3 times
Notification LED operation (1 cycle)
H: On
L: Off
H: On
L: Off
H: On
L: Off
H: On
L: Off
H: On
L: Off
H: On
L: Off
Notification LED operation (1 cycle)
H: On
L: Off
H: On
L: Off
H: On
L: Off
6 – 17
Pins are microprocessor pins unless otherwise specified.
DET_15V (pin 34). UR15V or A9V is not applied.
If error is detected during operation, the power is turned on
again by interrupt handling (instantaneous blackout process-
ing).
DET_D3V3 (pin 36) failure (L). D3.3V is not applied.
If error is detected during operation, error standby is activated
by polling.
DET_5V (pin 33) failure (L). 5V is not applied.
If error is detected during operation, error standby is activated
by polling.
DET_PNL_12V (pin 35) failure (L). Panel power is not
applied.
If error is detected during operation, error standby is activated
by polling.
Main microprocessor detection error.
The details are displayed in "ERROR STANDBY CAUSE" on
page 1 of process A for the main microprocessor.
LCD TCON ROM Data error.
When this error occurs, rewrite TCON ROM Data.
Basically, communication logs are analyzed by a bus
monitor or debug print logs are analyzed.
Initial communication from the main CPU is not received.
(After canceling the reset, request for the monitor model No.
is not received.)
Communication line failure or main CPU start-up failure.
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-42D65U