Sharp C6400U Service Manual page 141

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
LC-52/60/70LE640U/C6400U,LC-80LE633U/844U (1st Edition)
Center icon LED operation
6 – 23
Note
Pins are monitor microprocessor 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.
(MONITOR MAX TEMP on page 15 of the process A:
Change of temperature failure AD value): Thermistor
Main microprocessor detection error (CPU temperature
error, etc.)
The details are displayed on page 1 of the process A of
the main microprocessor.