Installation Guide HP J2443A 8-Mbyte Memory Upgrade for the HP Router 650 1994-08

Caution Use the precautions described below while performing the
procedures described in this installation guide.
To avoid damage to the HP Router 650, switch off all power
supply modules, or disconnect all power cords, before removing
the routing engine (the module in slot 1, the topmost slot). The
routing engine and its PCMCIA flash card and memory modules
may not be “hot swapped,” that is, changed while power is
connected to the router chassis. Special instructions for hot
swapping (online replacement of) the other interface cards are
in the Installation Guide for the HP Router 650.
The routing engine, interface cards, flash card, and memory
modules contain electrical components that are easily damaged
by small amounts of static electricity. This can happen when
cards are installed or removed—whether power is disconnected
(offline replacement) or connected (“hot swap” or online
replacement). In all cases, follow these precautions to avoid
damage to the card or chassis:
Store memory modules in an antistatic box or bag whenever
they are not installed in the HP Router 650.
Before unpacking the memory modules, use a grounding
wrist strap. (The grounding wrist strap supplied with the
memory upgrade has instructions on its envelope.) Attach
one end to your wrist, and attach the foil end to the metal
panel on the back surface of the HP Router 650 chassis. This
is a grounded unpainted metal surface.
Handle the routing engine only by its edges, bezel (face
plate), or locks (extractor levers). Do not unnecessarily
touch electrical components on the routing engine.
When installing memory modules, do not touch any other
components on the routing engine.
Do not remove the wrist strap until the memory module has
been installed in the chassis or the memory modules have
been stored in an antistatic box or bag.
Ensure that you have the following items.
4