Toshiba 650CT Maintenance Manual page 150

4.10 RTC Battery, I/O Board and PC Card Slot
WARNING: If you replace the RTC battery, be sure to use only batteries recommended
by Toshiba. Installation of the wrong battery can cause the battery to explode or cause
serious damage.
Removing the RTC Battery, I/O Board and PC Card Slot
To remove the RTC battery, I/O board and PC card slot, follow the steps below and refer to
figures 4-25 and 4-26.
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, keyboard, top cover with display assembly, and membrane switch and
backup battery as described in Sections 4.2 through 4.9.
3. Disconnect the RTC battery cable from PJ7 on the system board. If you enter
from the hard drive cavity, use a small flat head screwdriver to disconnect the
cable.
4. Remove the tape and lift out the RTC battery.
5. Remove seven M2x6 screws securing the I/O board and four M2x6 screws
securing the PC card slot.
Figure 4-25 Removing the RCT battery and screws
4-26
650CT