Sony KF-42WE610K Service Manual page 9

- 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.
3. Channel
4. Wait until appearing the initial setup display.
5. Disconnect AC plug and connect it again.
<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
- 3 : Lamp cover
- 4 : Fan
- 4 : Temp
- 5 : Lamp driver
- 6 : +B OVP
- 7 : Audio
- 8 : D-OVP
- LAMP : Lamp
Channel 5
8
When lamp cover SW is opened then pin 3 of CN8014 on the A
board is high, LCD Engine u-com (pin 27 of IC3208 on the C2
board) detects it and make turn off the lamp.
When Fan1 or Fan2 or Fan3 is stopped then pin 2 or 5 or 8 of
CN8022 on the A board is high, LCD Engine u-com (pin 24 of
IC3208 on the C2 board) detects it and make turn off the lamp.
When a temperature sensor on the H3 board detects a high
temperature or IIC-E line connector (CN8023:A board,CN44:H3
board) is not attached securely, LCD Engine u-com IIC-E line
detects it and make turn off the lamp.
When lamp is not turned on then pin 29 of LCD Engine u-com
(IC3208 on the C2 board) is high, checks pin 28 of LCD Engine
u-com. If pin 28 is low, it is judged no high voltage.
When +17V line drop then pin 53 of MAIN u-com (IC3405 on the
C2 board) is low, it turns off the main power.
When DC is appeared by audio amp failure at speaker line.
Then it is detected by MAIN u-com (pin 59 of IC3405 on the C2
board) and it turns off the main power.
When +3.3V or +2.5V or +1.8V line over then pin 49 of MAIN
u-com (IC3405 on the C2 board) is low, it turns off the main
power.
When lamp is not turned on then pin 29 of LCD Engine u-com
(IC3208 on the C2 board) is high, checks pin 28 of LCD Engine
u-com. If pin 28 is high, it is judged lamp is burned out.
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KF-42WE610K/50WE610K/60WE610K
K
RM-Y913K RM-Y913K
-
1
RM-Y913K