KF-42E200A, KF-50E200A, KF-55E200A - Sony TV Service Manual (repair manual). Page 13

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KF-42E200A/50E200A/55E200A
RM-GA007     RM-GA007      RM-GA007
- The results display is not automatically cleared. In case of repairs and after repairs, check
the self-diagnosis screen and be sure to return the results display to "0".
- If the results display is not returned to "0" it will not be possible to judge a new malfunction
after completing repairs.
<Method of Clearing Results Display>
1. Power off (Set to the standby mode)
2.
Channel
Vol
3. Channel
<Method of Ending Self-Diagnosis Screen>
- When ending the self-diagnosis screen completely, turn the power switch OFF on the
remote commander or the main unit.
5. Self-Diagnosis function operation
8
ENTER
DISPLAY
5
-
PO
TV
WER
1
:
Lamp error
When the lamp is broken.
2
:
Temp error
When the inside temperature sensed with IC7021, IC7180 mounted on HB board, 
S2 board  respectively exceed the threshold, the lamp turns off. 
3
:
Lamp cover
When the lamp cover is opened the connector of the lamp is not fixed, the lamp 
turns off.
4
:
FAN 
When any FAN (FAN1~FAN3) is stopping or harness is not connected correctly, 
the lamp turns off.
5
:
Lamp Driver
When the ballast is not working with high voltage, the lamp turns off.
6
:
Low B error
When the voltage SET12V is low, TVM(TV u-com) detects it and makes turn off 
the lamp.
7
:
Audio error
When the voltage AU18V is not supplied or DC voltage is detected at speaker,
TVM(TV u-com) detects it and makes turn off the lamp.
8
:
D-OVP error
When the voltage SET12V is high, TVM(TV u-com) detects it and makes turn off
the lamp.
10
:
ATSC OVP
When the voltage SET6V is low, TVM(TV u-com) detects it and makes turn off the
lamp.
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