LC-37GD1E (serv.man7). Adjustment procedures - Sharp TV Service Manual (repair manual). Page 3

8.Lamp error detection
8-1.Feature description

This liquid-crystal colour TV incorporates a lamp error detection feature (lamp error detection) that automatically
turns OFF the power for safety under abnormal lamp or lamp circuit conditions.
If anything is wrong with the lamp or lamp circuit or when the lamp error detection feature is activated for some
reason, the following will result.

1

The power of TV main body is turned OFF about six seconds after it is turned ON.  (The power LED on
the front of the TV turns red from green and keeps blinking in red (ON for 250ms and OFF for 1sec).)

2

If 

1

 occurs five times consecutively, it becomes impossible to turn ON the power.  (The power LED

keeps blinking in red (ON for 250ms and OFF for 1sec).)

8-2.Measures

1).Checking with lamp error detection OFF

While the “MAIN POWER” switch is off, hold down the “P(

Ù

)” and “       (+)” keys and then turn the “MAIN

POWER” on. The display will run in the “Display process mode” (“<K>” will appear.).

      If there is a problem with a lamp or a lamp circuit, the lamp will go out. (The power LED is green.)
      Then, you can check the operation to see if the lamp and lamp circuit are abnormal.

2).Resetting the lamp error count

After you have finished checking whether the lamp and lamp circuit are abnormal, reset the lamp error
count. If a lamp error is detected five consecutive times, the power cannot be turned on.

      Therefore, move to the “L ERR RESET” line, the fourth line on the first page of the“Display adjustment
      mode”, using the “Cursor 

'

/

"

” key. Then, reset the “L ERR RESET” value using the “Cursor 

Û 

/ 

û

” key.

      In this case, press the “Cursor 

'

/

"

” key to reset it to "0".

Then perform operation checking and check that the lamp error detection feature is not activated.

table of contents of process mode page 0

Normal values of individual displays

Reset to "0"

SERVICE      S
   GRAYLEVEL
   COMBIAS
   VLSBIAS
   L ERR RESET
   LCD
   PATTERN
   MOTOR AND FAN
   OTHER
   VER M301

32/37GD1E
100
155
041
    0

CEEPD