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Removal and Replacement
6–16
WFM 90 and WFM 91 Service Manual
To remove the Bottom board, perform the following procedure:
1. Remove the top cover. Refer to Top Cover on page 6–7.
2. Remove the LCD display module. Refer to LCD Display on page 6–9.
3. Remove the Top board. Refer to Top Board on page 6–13.
4. Remove the battery cover. Refer to Battery Cover on page 6–18.
5. Lift on the Bottom board while you press on the battery connector in the
battery compartment.
6. Gently pull the Backlight board from the back of the Bottom board.
7. Gently pull the Input board assembly from the back of the Bottom board.
To replace the Bottom board, perform the following procedure:
1. Install the Input board into the back of the Bottom board.
2. Install the Backlight board into the back of the Bottom board.
3. Align the Backlight and Input boards with the slots in the bottom cover and
gently slide the boards into the bottom cover. See Figure 6–6.
4. Install the Top board. Refer to Top Board on page 6–13.
5. Install the LCD display module. Refer to LCD Display on page 6–9.
6. Install the top cover. Refer to Top Cover on page 6–7.
7. Install the battery cover. Refer to Battery Cover on page 6–18.
Bottom Board