Specifications

Maintenance & Service Guide 4–11
Removal & Replacement Procedures
4.9.3 RIMM Installation Guidelines
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WARNING: To reduce the risk of personal injury when replacing or removing RIMMs,
allow the module being removed from the RIMM slot sufficient time to cool. RIMM
temperatures can reach 100°C (212°F).
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CAUTION: When handling a RIMM, be careful not to touch any of the contacts. Doing so
may damage the module.
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CAUTION: Static electricity can damage the electronic components of the workstation or
optional boards. Before beginning these memory upgrade procedures, ensure that you
are discharged of static electricity by briefly touching a grounded metal object.
When installing RIMMs, you must follow the guidelines listed below or the workstation will
not function:
1. A RIMM can be installed only one way. Be sure to match the two key slots on the RIMM
with the tabs on the RIMM socket. Push the RIMM down into the RIMM socket,
ensuring that it is fully inserted and properly seated, and that the retaining arms are
locked in place.
2. CRIMMs must be installed in all empty RIMM sockets on channels that are used. The
CRIMMs are removed when you populate the sockets with RIMMs. For examples of the
correct configuration sequence (Section 4.9.5).
3. Install RIMMs in pairs across both memory channels. Each RIMM socket populated
with a RIMM or CRIMM on Channel A must be populated with an identical RIMM or
CRIMM on Channel B.
4. Do not exceed 32 Direct RDRAM devices on each Direct Rambus memory channel. A
label on the RIMM will indicate the number and speed of Direct RDRAM devices on the
RIMM.
✎
The number of Direct RDRAM devices on a RIMM cannot be changed.
5. Use only 800-MHz RIMMs.
6. Use only RIMMs that have been tested and approved by Compaq. Not all RIMMs meet
the Compaq standard for quality and reliability.
✎
Only 800-MHz RIMMs can be used in this workstation. The workstation will
not function if RIMMs of different speeds are inserted.