Self Diagnosis Function - Sony KF-42WE610 Service Manual

1. Summary of Self-Diagnosis Function
- This device includes a self-diagnosis function.
- In case of abnormalities, the POWER/STANDBY indicator automatically blinks. It is
possible to predict the abnormality location by the number of blinks. The Instruction
Manual describes blinking of the POWER/STANDBY indicator.
- If the symptom is not reproduced sometimes in case of a malfunction, there is recording of
whether a malfunction was generated or not. Operate the remote command to confirm the
matter on the screen and to predict the location of the abnormality.
2. Diagnosis Items and Prediction of Malfunction Location
- When a malfunction occurs the POWER/STANDBY indicator only blinks for one of the
following diagnosis items. In case of two or more malfunctions, the item which first
occurred blinks. If the malfunctions occurred simultaneously, the item with the lower
blink count blinks first.
- The screen display displays the results regarding all the diagnosis items listed below.
The display "0" means that no malfunctions occurred.
Diagnosis Item
Power does not
turn on
Lamp cover error
Fan stopped
Temp error
Lamp driver error
+B OVP error
Audio error
D-OVP error
Lamp error
SECTION 1

SELF DIAGNOSIS FUNCTION

Number of times
POWER/STANDBY
indicator blinks
- Power cord is not
plugged in.
0
- Fuse is burned out.
(F1901:F board)
- Lamp cover is not
3 times
attached securely.
- Fan1 or Fan2 or Fan3
power is not supplied.(A
4 times board)
- Fan connector is not
attached securely.
- Temperture is high.
-IIC-E line connector
4 times
(CN8023:A
board,CN44:H3 board) is
not attached securely.
- Lamp driver is faulty.
5 times
- +17V is not
6 times
supplied.(G1 board)
- Audio line is shorted.(A,G1
board)
- IC8504(A board) or
7 times
IC4704(AU board) is faulty.
- PS1601 or 1602 is
opened.(G1 board)
- +3.3V or +2.5V or +1.8V is
8 times
over voltage.(G3 board)
- Lamp for the light
LAMP-LED flashes
source burns out.
– 8 –
KF-42WE610/50WE610/60WE610
K
RM-Y913
Probable Cause
Defected symptoms
Location
- Power does not come on.
- No power is supplied to the
unit.
- AC power supply is faulty.
- No picture/No sound
- No picture/No sound
- No picture/No sound
- No picture/No sound
- No picture/No sound
- No picture/No sound
- No picture/No sound
- No picture/No sound
RM-Y913 RM-Y913