Sony KE-MR42M1 Service Manual page 4

DIAGNOSIS
(Reliability Self Diagnostic Display Specifications for MEDIA RECEIVER)
The abnormal conditions are indicated by the following LED flashes.
LED Status
POWER/STBY • ⇔ • flashes alternately
Flashes (1Hz)
•Flashes four times
•Flashes six times
•Flashes nine times
TIMER
Flashes (1Hz)
This unit has the following self diagnostic function. Refer to this table to
identify a defective point in case of any malfunction.
Problem
Mediabox Digital 3.3V malfunction Shut down when Digital 3.3V becomes equal or under 0V.
Defective for cable
connection
Panel PANEL ALARM
Defective for cable
connection
Fan malfunction
Power protector operation
*Operation count is based on WDT.
*For flashes, the Power/Standby LED flashes in red.
*The flash period is based on the reliability standard.
MEDIABOX
- PANEL ALARM
(Not available for re-start)
- Defective for cable connection
- Defective for power voltage of fan,
fan protection
+3.3V malfunction Power protection on G board detected
PANEL malfunction
Defective for cable
connection
Symptom
The both White and Black interface cables are not connected
with the panel.
The both White and Black interface cables are not connected
with the MEDIABOX.
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( h t t p : / / s c h e m a t i c . 5 d 6 d . c o m )
PANEL
-
-
KE-MR42/50M1(CH) 3