420 Series 4-41
4.17 Fluorescent Lamp (FL) Inverter Board (TFT model)
Removing the FL Inverter Board
To remove the FL inverter board, follow the steps below and refer to Figure 4-43.
1. Turn off power to the computer. Disconnect the AC power cable and all external
cables connected to the computer.
2. Remove the battery pack, optional PC card, optional memory module, and display
mask as described in 4.2, 4.3, 4.4, and 4.16.
NOTE: Support the back of the display with your hand when you remove the
screws.
3. Remove tape from the FL cable.
4. Remove two M2.5x6 screws securing the FL inverter board. Note the ground
wire on the left screw.
5. Disconnect the FL inverter cable from CN1 and the FL cable from CN2 on the
FL inverter board.
6. Lift the board out.
Figure 4-43 Removing the FL inverter board (TFT)
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