Read Sony KF-E42A10 / KF-E50A10 (serv.man3) Service Manual online
– 10 –
KF-E42A10/E50A10
RM-GA004
4. Self-diagnosis screen displays
– In cases of malfunctions where it is not possible to determine the symptom such as when the power goes off
occasionally or when the screen disappears occasionally, there is a screen display on whether the malfunction occurred
or not in the past (and whether the detection circuit operated or not) in order to allow confirmation.
or not in the past (and whether the detection circuit operated or not) in order to allow confirmation.
<Screen Display Method>
– Quickly press the remote command button in the following order from the standby state.
– 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>
<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
:
Lamp_ERROR
When the lamp is broken.
2
:
lamp temp over
When the inside temperature sensed with IC7021, IC7180 and IC603 mounted on HB board, S2
board and C board respectively exceed the threshold, the lamp turns off.
board and C 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~FAN4) is stopping or harness is not connected correctly, the lamp turns
off.
off.
5
:
Lamp Driver
When the ballast is not working with high voltage, the lamp turns off.
6
:
Low B error
When the voltage B_12V is low, TVM(TV u-com) detects it and makes turn off the lamp.
Channel
Vol
Be aware that this differs from
the method of entering the
service mode (Vol +).
the method of entering the
service mode (Vol +).
DISPLAY
5
-
POWER
1
: LAMP_ERROR
0
2
: LAMP_TEMP
0
2
: TEMP_ERROR
0
No use
3
: LAMP_COVER
0
4
: FAN_ERROR
0
5
: LAMP_DRIVER
0
6
: LOWB_ERROR
0
7
: AUDIO_PROT
0
No use
8
: D_OVP
0
No use
10 : ATSC_OVP
0
No use
SELF CHECK
- Numeral "1" means a fault was detected one time
- Numeral "0" means that no fault was detected
- Numeral "0" means that no fault was detected
1. Power off (Set to the standby mode)
2.
Channel
Vol
3. Channel
8
ENTER
DISPLAY
5
-
POWER
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