Data General AViiON 4600 Series, Customer Documentation

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8-1
014–002091
Chapter 8
Adding or Replacing Memory
Modules
This chapter gives the rules for installing memory modules and explains how to add a
new memory module or replace a failed one. You will need to remove memory modules
to replace failed memory modules, or to replace a failed system board.
AViiON 530 and 4600 series computer systems support one to four pairs of Single
In-Line Memory Modules (SIMMs). Model 7018 memory modules contain
4 megabytes of memory on each SIMM; Model 7019 modules provide 16 megabytes.
Both models support Error Checking and Correction (ECC) rather than byte parity
error detection. Figure 8Ć1 shows how to identify the memory modules supported by
your system.
CAUTION: Attempting to use improper memory modules may cause serious system
damage. Make certain youhave the correct model and part number
SIMMs for your system before installation. Take particular care not to
install byte parity memory modules in computers designed for ECC
memory modules.
5–1/2 inches
(13.97 cm)
ECC Memory Module
(SIMM)
PN005037867
PN005037867
(Model 7018, 4 megabytes)
PN005037868
(Model 7019, 16 megabytes)
Figure 8-1 AViiON 530 and 4600 Series ECC Memory Modules