Panasonic Lumix DMC-GH4H series - Battery Grip Service; Battery Grip Power Circuit Check

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7.3. Checking Method of Battery Grip (DMW-BGGH3)
• It is a check method of optional battery grip (DMW-BGGH3).
■ Checking Method of Power Circuit
1. Insert the Battery to the Battery Grip.
2. Connect a tester between CC2101 pin and CC2106 pin.
3. Short circuit CC2104 pin and CC2111 pin.
4. Push in the switch which detects having been attached.
5. It is normal if battery voltage is displayed on the tester.