Sony KF-E42A10 Service Manual page 13

KF-E42A10/E50A10
RM-SA001 RM-SA001
- 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. DISPLAY
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
1 : Low B error
2 : D-OVP
3 : ATSC OVP
4 : lamp temp over
5 : Audio
8 : lamp cover
9 : Lamp Driver
10 : FAN
LAMP : Lamp
Channel 5
8 ENTER
When the voltage converted on ASU DC-DC Converter D5V is low, TVM
(TV u-com) detects it and makes turn off the lamp.
When the output voltage from ASU DC-DC converter is abnormally high,
TVM detects it and makes turn off the lamp.
When the voltage converted by IC6403 on G board is abnormally high, TVM
detects it and makes turn off the lamp.
When the inside temperature sensed with IC1700, IC1800, IC1900 and
IC5066 mounted on S1 board, S2 board, S3 board and C board respectively
exceed the threshold, DEM (Display Engine u-com) detects it and makes
turn off the lamp.
When DC is appeared by audio amp failure at speaker line, DEM detects it
and makes turn off the lamp.
When the lamp cover is opened or harness from T board is off, DEM detects it
and makes turn off the lamp.
When the ballast is not working with high voltage, DEM detects it and makes
turn off the lamp.
When any FAN (FAN1~FAN5) is stopping or harness is not connected correctly,
DEM detects it and makes turn off the lamp
When the lamp is broken, DEM detects it.
Vol -
– 12 –
POWER