Sharp LC-90LE657U Service Manual page 45

3) Communication failure details (Flashes slowly 3 times and flashes fast)
Error type
Initial communica- H: On
tion reception failure
Flashes fast once
L: Off
Start-up confirma- H: On
tion reception failure
Flashes fast twice
L: Off
Regular communica- H: On
tion failure
Flashes fast 3 times
L: Off
Other communica- H: On
tion failure
Flashes fast 5 times
L: Off
4) Other failure details (Flashes slowly 4 times and flashes fast)
Error type
Monitor temperature H: On
failure
Flashes fast once
L: Off
Main failure H: On
Flashes fast 3 times
L: Off
Center icon LED operation
Center icon LED operation
6 – 3
Note
Basically, debug print logs are analyzed or commu-
nication logs are analyzed by a bus monitor.
Initial communication from the main CPU is not
received. (Request for the monitor model No. is not
received.)
→ Communication line failure or main CPU start-up fail-
ure
Start-up reason confirmation from the main CPU cannot
be received. (Start-up communication until start-up rea-
son notification command is not received.)
→ Main CPU start-up failure or monitor microcomputer
reception failure
Regular communication that is performed at 1 second
intervals in the normal operation is interrupted.
→ Main CPU operation failure or monitor microcom-
puter reception failure
When a request (PM_REQ=H) is sent from the main
microcomputer, the request command is not output
from the main CPU, etc.
→ Main CPU operation failure or monitor microcom-
puter reception failure
Note
Pins are monitor microcomputer pins unless other-
wise specified.
If the panel temperature is 60°C or more for 15 seconds
or more in a row, CAUTION appears on the OSD
(flashes in red in the lower right screen).
If the panel temperature is 60°C or more for 25 seconds
or more in a row, error standby is activated.
Main microcomputer detection error (CPU temperature
error, etc.)
The details are displayed on page 1 of the adjustment
process mode.
LC-90LE657U