Toshiba 650CT Maintenance Manual page 157

4.13 Fan
Removing the Fan
To remove the fan, follow the steps below and refer to Figure 4-33.
1. Turn off the power to the computer, then disconnect the AC adapter and all
external cables connected to the computer.
2. Remove the battery pack, optional memory module, optional PC card, HDD,
DAA module, keyboard, top cover with display assembly, membrane switch and
backup battery, RTC battery and I/O board and PC card slot, and speaker and
system board as described in sections 4.2 through 4.12.
3. Disconnect the fan cable from PJ21 on the system board.
4. Turn it over and remove two M2.5x4 screws securing the fan to the system board
and lift out the fan. Take note of how the fan cable is routed on the system board.
Installing the Fan
To install the fan, follow the steps below and refer to Figure 4-33.
1. Carefully route the fan cable, seat the fan in the system board, and secure it with
two M2.5x4 screws.
2. Connect the fan cable to PJ21 on the system board.
3. Install the system board, speaker, RTC battery and I/O board and PC card slot,
membrane switch and backup battery, top cover and display assembly, keyboard,
DAA module, HDD, optional PC card, optional memory module and battery pack
as described in Sections 4.12 back through 4.2.
650CT
Figure 4-33 Removing the fan
4-33