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4. TROUBLE SHOOTING
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Only for training and service purposes
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4.12 Main Keypad Backlight Troubleshooting
MAIN Key Pad Back Light is on as below :
Key pressing -> MAIN Key Backlight LED On
START
Is key backlight timer off?
Change Setting
No
Change the Backlight LED
Yes
Yes
Key press
Change the Mainboard
Is backlight on partially?
Yes