9
SWITCH KEY
1. Switch key damaged.
2. Use multi-meter to measure switch key resistance.
Use meter probe touch T1 and T4, and press switch key at the same time.
If the multi-meter “BEEP” means the switch key is good for use, if not, please
change the switch key.
3. Make sure that no insulation material is touching the soldering contacts.
4. If problem persists, replace a new main board.
Meter Probe
Meter Probe
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