Self Diagnosis Function - Sony KF-60DX100 Service Manual

1. Summary of Self-Diagnosis Function
• This device includes a self-diagnosis function.
• In case of abnormalities, the TIMER/STAND BY indicator automatically blinks. It is possible to predict the abnormality location by
the number of blinks. The Instruction Manual describes blinking of the TIMER/STAND BY 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 TIMER/STAND BY 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 TIMER/STAND BY
indicator blinks
Power does not turn on
Lamp cover error
FAN stopped
Lamp driver error
Low B error
Audio error
Lamp error
3. Blinking count display of TIMER/STAND BY indicator
LAMP STEREO TIMER/STAND BY
Release of TIMER/STAND BY indicator blinking.
• The TIMER/STAND BY indicator blinking display is released by removing the plug
from the power or leaving for 2 minutes.
SECTION 1

SELF DIAGNOSIS FUNCTION

No. of times
Probable Cause Location
• Power cord is not plugged in.
0
• Fuse is burned out (F1601) (G board)
3 times • Lamp cover is not attached securely.
• FAN1 or FAN2 power is not supplied. (A board)
4 times
• FAN connector is not attached securely.
5 times • Lamp driver is faulty.
6 times • +5 V is not supplied. (G board)
• Audio ±15 V line is shorted. (A, G board)
9 times • IC1203 or IC1204 is faulty. (A board)
• PS1601 or 1602 is opened. (G board)
LAMP LED
• Lamp for the light souce burns out.
flashes
* One blink is not used for self-diagnosis.
•EXAMPLE
<Diagnosis Items> <Number of Blinks>
• Lamp Cover
• FAN
Lamp ON : 0.3 seconds
Lamp OFF : 0.3 seconds
3 times
4 times
– 6 –
KF-60DX100
Detected symptoms
• 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
Lamp OFF :
3.0 seconds
RM-Y910