The Rom Assembly; Removing The Rom Assembly - HP Integral Personal Computer Service Manual

6.16 The ROM Assembly
There are two operating system plug-in ROM assemblies that may be installed in the Integral PC:
• If the computer has the HP-UX System III operating system (Release 1.0.0), it will have the System
ill plug-in ROM assembly (part number 00095-60006). This assembly cannot be taken apart or
serviced. If the assembly fails the ROM test, replace it .
• If the computer has the HP-UX System V operating system (Release 5.0 or higher), it will have a
plug-in ROM assembly that can be taken apart and repaired. The current versions are the
HP 82991A ROM Assembly and the HP 8299SA ROM Assembly. The assemblies have room for
two PCAs: the operating system ROM peA and the option ROM peA (which mayor may not be
present).
6.18.1 Removing the ROM As.embly
To remove the plug-in ROM assembly, follow the procedure below.
CAUTION
Before installing or removing the plug-in ROM assembly, turn off the computer. Otherwise seri-
ous damage to the unit may occur.
Use care when you install or remove the plug-in ROM assembly. Be sure that the assembly is
right-side up (there are two guides on the bottom of the assembly) and that it is aligned properly
before
you
try to insert it. The ROM connecting pins in the ROM receptacle are very easily
damaged.
t.
Tum off the computer.
2. Remove the ROM compartment door in the middle of the back of the computer by pushing the
tabs at the top of the door toward the center.
"
~
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Unlocking the ROM Door