Replacing The Display Board And Assembly - 3Com NETBuilder II Installing Instruction

3-18 C 3: NETB
HAPTER UILDER
Replacing the Display
Board and Assembly
a
Turn off system and
unplug power cord.
b Remove front
panel.
a
Turn off system and
unplug power cord.
b Remove front
panel.
II 8-S E B /R
LOT XTENDED RIDGE OUTER
The display assembly on the Extended chassis consists of a display board and an
extended board that connects to the backplane. You can replace either the
display board, or the entire display assembly.
To replace the display board in the Extended chassis, follow the steps in
Figure 3-20. You will need a Phillips screwdriver.
Figure 3-20 Replacing the Display Board on the Extended Chassis
To replace the entire display assembly, follow the steps in Figure 3-21.
Figure 3-21 Replacing the Display Assembly
c
Loosen retaining
screws and pull board
away from assembly.
d
Align new board and
tighten screws.
e
Reinstall the front
panel.
c
Loosen the two captive
screws on either side
of the display board
and pull entire assembly
out of chassis.
d Slide new assembly
along guides into the
chassis.
e
Push firmly on assembly
until connector engages
backplane.