Read Sharp LC-20C2E (serv.man3) Service Manual online
13
LC-20C2E
[9] Lamp error detection
9-1. Function
For added safety, this LCD color TV set is equipped with the lamp error detection function. In case of lamp or
lamp circuit failure, the power is automatically turned off.
If by any chance the lamp or the lamp circuit gets in trouble or if a lamp error detection is activated for some
reasons, the TV set behaves as follows.
lamp circuit failure, the power is automatically turned off.
If by any chance the lamp or the lamp circuit gets in trouble or if a lamp error detection is activated for some
reasons, the TV set behaves as follows.
1
The TV set power can be turned on, but off in about 5 seconds. (The power LED indicator on the front panel
turned from green to red.)
turned from green to red.)
2
If the above action
1
happens 5 times in row, the TV power cannot be turned on any longer. (The power
LED indicator stays in red.)
9-2. Measures
9-2-1. Turning off the lamp error detection function
9-2-1. Turning off the lamp error detection function
If the power is turned off because of the above lamp error, the power LED indicator turns red and the set goes
to the adjustment process mode. Now the error detection function turns off and the power turns on instead.
In this way, the lamp and the lamp circuit can be checked for their performance.
Also make sure the “ERROR NO RESET” setting in the 7th line on page 1 of the adjustment process is above
1. When over 1, it means the lamp error detection has been activated.
to the adjustment process mode. Now the error detection function turns off and the power turns on instead.
In this way, the lamp and the lamp circuit can be checked for their performance.
Also make sure the “ERROR NO RESET” setting in the 7th line on page 1 of the adjustment process is above
1. When over 1, it means the lamp error detection has been activated.
9-2-2. Resetting the lamp error counter
First make sure the lamp and the lamp circuit function well, and then reset the lamp error counter to zero.
Select the “ERROR NO RESET” item in the 5th line on page 1 of the adjustment process and reset the setting
to “0” using the VOL+/- buttons.
Select the “ERROR NO RESET” item in the 5th line on page 1 of the adjustment process and reset the setting
to “0” using the VOL+/- buttons.
Finally check the performance to make sure the lamp error detector is not activated.
Page 1 of the adjustment process
1
+ B
A D J
1
6
0
M O D E L
C 2 E
I N C H I
S
I Z E
1
5
N T S C
P W M
F R Q
0 C 0
E R R O R
N O
R E S E T
5
P M U T E
O F F
1
1
1
1 C 2 E 1 V E R
1
.
0
0
0
Reset to zero.
[8] Factory settings
Make the factory settings using the adjustment remote controller. Either of the following remote control codes
works.
works.
Key name
R/C Code
Factory setting
100000111111110
Factory setting
100000001010110
