Lamp Error Detection - Sharp LC-24LE210E Service Manual

9. Lamp error detection

1. Function description
This LCD colour television has a function (lamp error detection) to be turned OFF the TV set automatically for
safety criteria when the lamp or lamp circuit is abnormal.
If the lamp or lamp circuit is abnormal, or some other errors happen, and the lamp error detection is executed, the
following occurs:
a. The TV set is turned OFF automatically 20 seconds after it is turned ON by the user.
(The power LED on the front side of TV turns from green to red)
b. If the situation "a." happens 5 times sequentially, it becomes impossible to turn on the power.
(The power LED turns from green to red and keeps blinking in red).
LED Flashing timing
2. Countermeasures
a. Checking with [L Error Check Off]. Repair the problem that produces the LAMP ERROR. The TV remains
with power LED blinking until K mode is forced by local keyboard, in order to disable the LAMP ERROR detec-
tion. To disable the LAMP ERROR feature is necessary enter in K mode by pressing "VOL DOWN" and "b"
keys at same time when the AC cord is plugged in.
b. Resetting the LAMP ERROR counter. After the lamp and lamp circuit are found out of trouble, the LAMP
ERROR counter should be reset. If a LAMP ERROR is detected fi ve consecutive times, the power cannot be
turned on.
Method 1: Using the cursor (UP/DOWN) key, move to the cursor to [L Error Reset] on Line 6 of ETC Menu Fig
4. With the cursor (LEFT/RIGHT) keys reset the value to "0".
Method 2: In the case the TV is not blocked (less than 5 consecutive errors), switch on the Set. After 30 minutes
working, the LAMP ERROR counter will be reset automatically.
1 s Red → 260 ms
Off → 1s
260 ms
25
LC-24LE210
LC-24LE220