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Remove and Replace
6-24
WFM90D and WFM91D Service Manual
Remove. To remove the Input board:
1. Remove the top cover. Refer to Top Cover on page 6--5.
2. Remove the battery cover. Refer to Battery Cover on page 6--25.
3. Lift on the Bottom board while you press on the battery connector in the
battery compartment.
4. Gently pull the Input board assembly from the back of the Bottom board.
5. Unscrew the retaining nuts from the three BNC connectors on the rear panel.
6. Pull the rear panel cover off of the BNC connectors.
Replace. To replace the Input board:
1. Install the rear panel cover over the BNC connectors on the Input board.
2. Install the retaining nuts onto the three BNC connectors on the rear panel.
3. Install the Input board assembly onto the back of the Bottom board.
4. Align the Input board (and Backlight board, if present) with the slots in the
bottom cover and gently slide the boards into the bottom cover.
5. Install the top cover. Refer to Top Cover on page 6--5.
6. Install the battery cover. Refer to Battery Cover on page 6--25.
Input Board Assembly