Installing Memory Modules; Important Guidelines For Direct Rimm Installation; Installing Rimm Modules - Compaq Deskpro Workstation AP250 Maintenance And Service Manual

Installing Memory Modules

Important Guidelines for Direct RIMM Installation

When installing RIMMs (Rambus Inline Memory Modules), you MUST
follow these guidelines:
Use only 128-MB or 256-MB, 700- or 800-MHz Error Checking and
Correcting (ECC) RIMMs.
A RIMM can be installed only one way. Be sure to match the two key
slots on the RIMM with the tab on the RIMM socket. Push the RIMM
down into the RIMM socket, ensuring that it is fully inserted and
properly seated.
Do not exceed 32 count devices on each Direct Rambus memory
channel. A factory label on the RIMM indicates the size and number of
DRAMS contained on the RIMM.
A CRIMMs (Continuity RIMMs) must be installed in the unpopulated
RIMM slot.
For optimal performance, populate slot 1 first, then slot 2.
NOTE: Your workstation will support up to 1-GB of memory when 256-MB DRAM
technology is available.

Installing RIMM Modules

IMPORTANT: Before installing additional RIMMs, read the previous section, "Important
Guidelines for Direct RIMM Installation."
The workstation comes with at least 128-MB of Error Checking and
Correcting (ECC) Direct RIMMs installed. Additional RIMMs are available to
upgrade the memory. A maximum of 32 count devices is supported on each
Rambus channel. The workstation has two RIMM sockets on the system board
Compaq Confidential – Need to Know Required
Writer: Bruce Sullivan Project: Compaq Deskpro Workstation AP250 Maintenance and Service Guide Comments:
Part Number: 118133-001 File Name: d-ch3 Removal and Replacement Procedures.doc Last Saved On: 10/26/99 3:02 PM
CAUTION: When handling a RIMM, do not touch any of the contacts. Doing so
may damage the module.
CAUTION: Static electricity can damage the electronic components of the
workstation or optional boards. Before beginning these procedures, ensure that
you are discharged of static electricity by briefly touching a grounded metal
object.
Removal and Replacement Procedures 3-27