Read Sony KDF-42WE655 / KDF-50WE655 Service Manual online
10
KDF-42WE655/50WE655
KDF-42WE655/50WE655
Clearing the Result Display
To clear the result display to “0”, press the buttons on the Remote Commander sequentially when the diagnostic screen is displayed, as shown below:
To clear the result display to “0”, press the buttons on the Remote Commander sequentially when the diagnostic screen is displayed, as shown below:
1. If the screen is already displayed, proceed to step 3. If not, Power off (Set to Standby model).
2. Press Display
Channel 5
Sound Volume -
Power ON
3. Press Channel 8
ENTER
Clearing the Self-Diagnostic Screen
The self diagnosis screen display is cleared by turning off the set using the Remote Commander or the power switch.
The self diagnosis screen display is cleared by turning off the set using the Remote Commander or the power switch.
Self-Diagnostic Circuit
Self-Diagnosis Function Operation
3 : Lamp cover
The rib at the back of the lamp cover closes the SW on the T board to ground pin 3 of CN8001.
It is monitored by the DE-micro (pin 94 of IC6902) and turns off the lamp when it is opened.
It is monitored by the DE-micro (pin 94 of IC6902) and turns off the lamp when it is opened.
4 : Fan
Fan rotation is detected by "FAN-PROT" and the DE-micro (pin 92 of IC6902) turns off the lamp
when it is "high".
when it is "high".
4 : Temp
When the temperature sensor on the H3 board (WE models) or H4 board (WF/XS models)
detects high temperature, or IIC-E line connector (CN6022:G2 board, CN44:H3board/H4board)
is not seated securely, the DE-micro turns off the lamp.
detects high temperature, or IIC-E line connector (CN6022:G2 board, CN44:H3board/H4board)
is not seated securely, the DE-micro turns off the lamp.
5 : Lamp driver
When the "LAMP-PROT" (pin 95) is low, the lamp is not turned on. If the "LAMP-HV-DET"
(pin 96) is low at the same time, it is classified as no high voltage of the lamp driver.
(pin 96) is low at the same time, it is classified as no high voltage of the lamp driver.
6 : Low B error
When no "DD 6V " is detected, pin 129 of TV-micro is low and it turns off the main power.
7 : Audio
When DC voltage is detected at the speaker or woofer outputs, pin 128 of TV-micro is low and it
turns off the main power.
turns off the main power.
8 : D-OVP
When overvoltage of "+3.3V" or "+2.5V" is detected, pin 126 of TV-micro is low and it turns off
the main power.
the main power.
10 : ATSC-OVP
When no "Digital Module 5V" is detected, pin 127 of TV-micro is low and it turns off the main
power.
power.
LAMP : Lamp
When the "LAMP-PROT" (pin 95) is low, the lamp is not turned on. If the
"LAMP-HV-DET" (pin96) is high at the same time, it is classified as no lamp or a dead lamp.
"LAMP-HV-DET" (pin96) is high at the same time, it is classified as no lamp or a dead lamp.
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