Sony KDF-E42A10 Service Manual page 14

- 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 8
<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
2 : Temp
3 : Lamp cover
4 : Fan
5 : Lamp Driver
6 : Low B error
7 : Audio
8 : D-OVP
10 : ATSC-OVP
LAMP : Lamp
Channel 5
ENTER
When the temperature sensor on the S2 board detects high temperature, or IIC
line connector (CN8410:AGU board, CN7180:S2 board) is not seated securely,
the TV-micro tums off the lamp.
When the temperature sensor on the HB board detects high temperature, or IIC
line connector (CN8004:AGU board, CN7020:HB board) is not seated securely,
the TV-micro tums off the lamp.
The rib at the back of the lamp cover closes the SW on the T1 board. The lamp
closes the SW on the T2 board.
It is monitored by the BE micro (pin133 of IC4100) and tums off the lamp when
it is opened.
Fan rotation is detected by ''FAN-PROT" and the TV-micro (pin 38 of IC8002)
tums off the lamp when it is ''high".
When the ''LAMP-PROT" (pin132 of IC4100) is high, the lamp is not tumed
on. If the ''LAMP-HV-DET" (pin134 of IC4100) is low at the same time, it
is classified as no high voltage of the lamp driver.
When no ''B_12V" is detected, pin 128 of TV-micro is low and it tums off the
main power.
When DC voltage is detected at the speaker output, pin 149 of TV-micro is low
and it tums off the main power.
When overvoltage of ''B_12V" is detected, pin 127 of TV-micro is low and it
tums off the main power.
When overvoltage of ''Q_10.5 V" is detected, pin 126 of TV-micro is low
and it tums off the main power.
When the ''LAMP-PROT" (pin132 of IC4100) is high, the lamp is not tumed
on. If the ''LAMP-HV-DET" (pin134 of IC4100) is high at the same time, it
is classified as no lamp or a dead lamp.
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K
Vol - POWER
KDF-E42A10/E50A10
RM-YD003 RM-YD003