Sharp LC-46SB57U - LED Flashing Timing Chart for Error Notification; Power LED

LC-46SB57U/LC-52SB57U
6 – 15
1) Power LED (Large classification)
LED flashing timing chart for error notification.
Error type Power green LED operation (1 cycle) Pins are monitor microprocessor (IC2002) pins.
Lamp error
Flashes once: Fast
H: On
L: Off
ERR_PNL (40pin): L error. Confirmed after 10 consecutive detec-
tions at 500 ms intervals (detected only when the backlight is on).
Note that after five detection counts, the lamp cannot be activated
except in the monitoring process. (For the first time, only the
inverter is reset, and error OFF is not activated.)
[Clearing method of the accumulated counts] •Set “LAMP
ERROR” on page 1 of the process A to 0. •AC_ON is performed
with [CH_DOWN] and [VOL_UP] on the unit down. •Continuous
illumination for 3 minutes.
Power error
Flashes twice
H: On
L: Off
Refer to “Power error details”.
Communication error
with the main CPU
Flashes 3 times
H: On
L: Off
Refer to “Communication error details”.
Communication line error or main CPU communication error →
Check debug statements for the main CPU.
Communication line with the main CPU: TxD(75pin), RxD(76pin)
Monitor temperature
error
Flashes 5 times
H: On
L: Off
If the panel temperature is 60°C or more for 15 seconds or more in
a row, CAUTION appears on the OSD (“TEMPERATURE” flashes
in red in the lower right portion of the screen).
If the panel temperature is 60°C or more for 25 seconds or more in
a row, error standby is activated.
[Avoidance method] Reduce the value of MONITOR MAX TEMP
(temperature protection threshold) on page 28 of the process A.
BD unit error
Flashes 6 times
H: On
L: Off
BD unit error
For the error details, refer to “standby cause” in the process menu.
Program area data
destruction
Flashes 8 times
H: On
L: Off
Flash ROM data error in the microprocessor
[Recovery method] Write the microprocessor software.
250ms
1sec