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Only for training and service purposes
4. TROUBLE SHOOTING
4.6 Main side view LED Troubleshooting
MAIN Key Pad LED is on as below :
Key pressing Æ LED_CON go down low (below 0.8v) Æ MAIN Key Backlight LED On
Main side view LED Troubleshooting
START
+VPWR is above 3.2V?
Check battery
No
Yes
END
Change QSC6270
No
LED ON ?
Change LED
No
Yes
Key press
When the LCD is on,
TP1 is below 0.8v
Yes