Remove and Replace
6-24 WFM90D and WFM91D Service Manual
Remove. Toremove 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 whileyou press on the battery connector in the
battery compartment.
4. Gently pull the Input board assembly from the backof the B ottom board.
5. Unscrew the retainingnuts from the three BNC connectors on the rear panel.
6. Pull the rear panel coveroff of the BNC connectors.
Replace. Toreplace the Input board:
1. Install the rearpanel cover over the BNC connectors on the Input board.
2. Install the retainingnuts onto the three BNC connectors on the rearpanel.
3. Install the Inputboard 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 batterycover. Refer to Battery Cover on page 6--25.
Input Board Assembly