2-58 Sun Fire X4100/X4100 M2 and X4200/X4200 M2 Servers Service Manual • August 2009
Caution – Before handling components, attach an ESD wrist strap to the grounding
post that is built into the rear of the chassis (see
FIGURE 1-2 on page 1-5 or FIGURE 1-6 on
page 1-9 for the location). The system’s printed circuit boards and hard disk drives
contain components that are extremely sensitive to static electricity.
3. If the server is in a rack, slide it far enough from the rack so that you can
remove the main cover. If you cannot safely view and access the motherboard,
remove the server from the rack.
4. Remove the main cover from the server. See one of the following:
■ Section 3.5, “Removing the Main Cover of the Sun Fire X4100/X4100 M2
Server” on page 3-6
■ Section 3.8, “Removing the Main Cover of the Sun Fire X4200/X4200 M2
Servers” on page 3-10.
5. Install the shorting jumper across the P5 or J13 header pins.
See
FIGURE 2-8 or FIGURE 2-9 for the jumper location. This jumper’s function is to
instruct the system to force recovery of the latest BIOS at system reboot.
6. Reinstall the main cover to the server.
7. Reconnect power cords to the server.
The server powers up to standby power mode, which is indicated when the
Power/OK LED on the front panel is flashing.
8. Return the server to main power mode by using a nonconducting pointer or
stylus to press and release the recessed Power button on the front panel.
You must fully power on the server to complete the reset. This is because the state
of this jumper cannot be determined without the host CPU running.
9. Repeat steps 1 through 8 to remove the P5 or J13 jumper. (Remove the jumper in
Step 5 rather than inserting it.)
Note – If you do not remove this jumper, the server will force a recovery of the new
BIOS every time that you power cycle the server.
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