Sharp LC-22AD1E Service Manual page 26

LC-22AD1E
5. Lamp error detection
1) Function description
This LCD colour television has a function (lamp error detection) that turns off the power automatically, for
safety, if a problem occurs with a lamp or a lamp circuit.
If there is a problem with a lamp or a lamp circuit or if a lamp error is detected for some other cause, the
following will occur.
(1) The power is turned off about 15 seconds after the power to the TV is turned on. (The power LED on
the front of the TV will be changed from green to red, and it will flash three times repeatedly.)
(2) If the protective function described in (1) is repeatedly activated five consecutive times, you will not be
able to turn on the power. (The red power LED will flash three times, repeatedly.)
2) Countermeasures
1. Confirmation after the lamp error detection is deactivated
When the power is turned off due to the lamp error detection function as described above, turn off
the [power] while the power LED is red. Then, when the "TV/VIDEO" key and the "MENU" key are
held down and the "MAIN POWER" key is pressed, the [inspection process] mode will be entered
and "K" will be displayed. Next, press the "
enter the [adjustment mode].
Then, you can check the operation to see if the lamp and lamp circuit are abnormal.
See if [ERROR NO RESET] in the first page of the adjustment is set to 1 or more.
If it is 1 or more, it means that a lamp error has been detected.
2. Resetting the lamp error count
After you have finished checking whether the lamp and lamp circuit are abnormal, reset the lamp error
count.
Select [ERROR NO RESET] in the first page of the adjustment process, and reset it to [0] using the
cursor "(Û)/(û)" keys.
WLD 26 VER 1.000 DTV VER
INCH
MODEL
ERROR NO RESET
1BIT_AMP ERR
PUBLIC MODE
COM BIAS 60
COM BIAS 50
PAL TAMP
SECAM TAMP
AV AMP
TAMP L
Y
TAMP H
First page of the first layer of the adjustment process
SIZE 22
AD1E
0
0
OFF
100
100
20
20
20
160
READ VALUE
168
Fig. 5-1
26
(-)" key and the "(Ù)" key at the same time to
Reset to "0"