Thursday, February 02, 2017

Sony LCD Projection television KDF-55WF655 - KDF-60WF655 – Diagnostic indication – Led blinking and causes – Lamp hour reset – Power supply circuit

Diagnostic Test Indicators
When an error occurs, the POWER/STANDBY or LAMP LED will flash a set number of times to indicate the possible cause of the problem. If there is more than one error, the LED will identify the first of the problem areas. If the errors occur simultaneously, the one that corresponds to the fewest flashes is identified first.
Results for all of the following diagnostic items are displayed on screen. No error has occurred if the screen displays a “0”.
Diagnostic Item
Description
Number of times
STANDBY or LAMP LED
lamp flashes
Probable Cause
Detected Symptoms
Lamp cover error
3 times
- Lamp cover is not fastened securely
- No picture/No sound
Fan error
4 times
- Fan1-4 Power is not supplied.(G2 board)
- Fan connector is not seated securely
- Fan caught wires or harnesses
- No picture/No sound
Temp error
4 times
- Internal temperature is too high
- IIC-E line connector is not seated properly
(WE:H3 board, WF/XS:H4 board)
- No picture/No sound
Lamp driver error
5 times
- Lamp driver defect
- No picture/No sound
Low B error
6 times
-No "DD 6V " output (G1 board)
- No picture/No sound
Audio error
7 times
- Short-circuit of Audio power supply line
(KD board, G1 board)
- Blowout of a fuse
(F4702,F4703,F4704 on KD board)
- IC failure
(IC4703,IC4708,IC4710 on KD board)
- No picture/No sound
D-OVP error
8 times
- Overvoltage of +3.3V or +2.5V
(A board, B board)
- No picture/No sound
ATSC-OVP error
10 times
-No "DTL MODULE 5V " output
(G1 board, G2 board)
- No picture/No sound
Lamp error
LAMP-LED is ON.
- Lamp is dead
- No picture/No sound
Releasing the POWER/STANDBY LED Flash
Unplug the power cord from the outlet to temporarily stop the POWER/STANDBY lamp from flashing.
Self-Diagnosis Screen Display
For failures that are difficult to reproduce, or accompany occasional power off and/or picture mute, the Self-Diagnosis screen display is useful to specify the cause.
To Bring Up Screen Test
In standby mode, press the buttons on the Remote Commander sequentially, in rapid succession, as shown below:
1. Display  > Channel 5 > Sound Volume - > Power ON
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:
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.
Self-Diagnosis Function Operation
Blinking
Causes
Description
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.
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".
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.
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.
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.
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.
10
ATSC-OVP
When no "Digital Module 5V" is detected, pin 127 of TV-micro is low and it turns off the main
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.
Reading and Resetting Lamp and Panel time
Use the following to determine the lamp and panel time of a set.
Screen Display Method
In standby mode, press the buttons on the Remote Commander sequentially, in rapid succession, as shown below:
1. Press Display > Channel 5 > Sound Volume + > Power ON
2. To enter the DE-micro service menu, press Jump 3 times.
3. To display the Lamp time, press Channel [2] 9 times.
To reset the lamp time press Channel 3 > Mute > Enter .
WRI-EXE(Character color is Red) is momentarily displayed and LampTM is reset to “0”.
Exiting Service Mode
After completing the changes exit service mode by turning off the set using the Remote Commander or the power switch.

POWER SUPPLY CIRCUIT 
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