6
H
ARDWARE
M
AINTENANCE
Preparing Tools
■
Phillips screwdriver
■
Straight screwdriver
■
ESD-preventive twist strap
■
Static shielding bag
n
The tools are not available with the H3C MSR 20 series. You must prepare one
yourself.
Opening/Closing
Chassis Cover
Step 1: Power off the router and remove the power cord.
Step 2: Remove all cables of interface modules on the back panel (keep the
ground cable connected).
Step 3: Put the router on level ground and have the back panel face you. Loosen
the captive screws fastening the back panel with Phillips screwdriver.
Step 4: Put two straight screwdrivers into the holes on the two sides of the chassis
and turn them until the tab on the front edge is separated from the front panel.
Step 5: Drag the chassis levelly a little towards your body and lift it, and then you
can remove the cover and put it away.
Figure 38
Remove/install captive screws of MSR 20-20/20-21