Removal And Replacement Procedures; Preparing The Spu; Tools Required - HP 3000 9x9KS Service Manual

Removal and Replacement Procedures

This chapter contains the procedures for removing and replacing all the Field Replaceable Units (FRUs) of
the HP 3000/9x9KS and HP 9000/Kx00 SPUs. It also contains the removal and replacement procedures for
the Rackmount Cabinets.

Preparing the SPU

Before any maintenance procedure is performed, the following steps should be taken to ensure no loss of
customer data or damage to the computer system:
• Be sure the customer has done a full (or at least a data base) backup.
• Log off all users and stop all current applications.
• Perform a system shutdown.
• Put the keyswitch in the Standby position.
• Unplug the power cord from the AC outlet.
Hazardous voltages are present inside the SPU. To prevent risk of electrical shock or energy
hazard, turn the keyswitch to the standby position and disconnect the AC power cord from the
AC outlet before opening the SPU. The AC power cord is the main power disconnect for the
computer cabinet. Allow 10 to 15 seconds for residual voltage inside the cabinet to dissipate before
accessing the inside of the SPU cabinet.
The SPU is now ready for any FRU to be removed and replaced. Be sure to have enough anti-static pads if
a number of cards or components need to be removed. Observe all ESD precautions while handling the SPU
components.

Tools Required

• #10 TORX head driver
• #15 TORX head driver
• Small flat blade screw driver
• Anti-static protective mats
• Grounding wrist strap
Handle all FRUs carefully. Dropping or otherwise jarring the FRUs will damage them. Follow ESD
procedures. Always use an ESD grounding wrist strap while performing service procedures.
WARNING
CAUTION
Removal and Replacement
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