IBM IntelliStation Z Pro 6221, Руководство по техническому обслуживанию аппаратной части

Страница: 34 / 168

shows the location of the jumper on the system board.
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
CMOS recovery
jumper (JBAT1)
Boot block
recovery jumper
(J12)
Keep data
Normal
Clear data
Configure
Recovery
(no jumper)
(J12)
6. Remove the boot block recovery jumper from pins 1 and 2.
7. Replace any adapters that were removed; then, replace the support bracket
and replace the side cover. (See “Removing and installing the support bracket”
on page 42 and “Replacing the side cover” on page 62.)
8. Connect the computer to a power source, keyboard, monitor, and mouse.
9. Insert the POST/BIOS update (flash) diskette into the diskette drive. You can
download a file to create this diskette from http://www.ibm.com/pc/support on
the World Wide Web.
10. Turn on the computer and the monitor.
11. After the update session completes, turn off the computer and monitor.
12. Remove the diskette from the diskette drive.
13. Disconnect all power cords; then, remove the computer cover.
14. Return the boot block recovery jumper to pins 1 and 2.
15. Reinstall the computer cover; then, reconnect all external cables and power
cords and turn on the peripheral devices.
16. Turn on the computer to restart the operating system.
Erasing a lost or forgotten password (clearing CMOS)
This section applies to lost or forgotten passwords. More information about lost or
forgotten passwords is available in Access IBM.
Complete the following steps to set the CMOS recovery jumper and erase a
forgotten password:
1. Review “Handling electrostatic discharge-sensitive devices” on page 120 and
“Safety notices (multilingual translations)” on page 120.
2. Turn off the computer and all attached devices.
3. Unplug the power cord.
4. Remove the side cover and support bracket. (See “Removing the side cover”
on page 39 and “Removing and installing the support bracket” on page 42.)
24
IBM IntelliStation Z Pro Type 6221: Hardware Maintenance Manual