Read Sony KE-MR42M1 / KE-MR50M1 Service Manual online
KE-MR42/50M1(CH)
3
DIAGNOSIS
(Reliability Self Diagnostic Display Specifications for MEDIA RECEIVER)
The abnormal conditions are indicated by the following LED flashes.
LED Status MEDIABOX PANEL
POWER/STBY •
⇔ • flashes alternately - PANEL ALARM
(Not available for re-start)
Flashes (1Hz) - Defective for cable connection
Flashes (1Hz) - Defective for cable connection
•Flashes four times - Defective for power voltage of fan,
fan protection
•Flashes six times +3.3V malfunction Power protection on G board detected
•Flashes nine times PANEL malfunction -
TIMER Flashes (1Hz) Defective for cable -
•Flashes nine times PANEL malfunction -
TIMER Flashes (1Hz) Defective for cable -
connection
This unit has the following self diagnostic function. Refer to this table to
identify a defective point in case of any malfunction.
identify a defective point in case of any malfunction.
Problem Symptom
Mediabox Digital 3.3V malfunction Shut down when Digital 3.3V becomes equal or under 0V.
Defective for cable The both White and Black interface cables are not connected
Defective for cable The both White and Black interface cables are not connected
connection with the panel.
Panel PANEL ALARM
Defective for cable The both White and Black interface cables are not connected
connection with the MEDIABOX.
Fan malfunction
Panel PANEL ALARM
Defective for cable The both White and Black interface cables are not connected
connection with the MEDIABOX.
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.
*For flashes, the Power/Standby LED flashes in red.
*The flash period is based on the reliability standard.
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