Self Diagnosis Function - Sony KDF-60XBR950 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 or
Fan4 power is not
4 times supplied.(A board)
- Fan connector is not
attached securely.
- Temperture is high.
-IIC-E line connector
4 times
(CN8041:A
board,CN3951:H4 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 or IC8505 (A board)
7 times
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 –
K
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
KDF-60XBR950/70XBR950
RM-Y914 RM-Y914