3Com NETBuilder II, Installing Instruction, Page: 44 / 82

2-16 C
HAPTER
2: NETB
UILDER
II 8-S
LOT
B
RIDGE
/R
OUTER
Replacing the Display
Board
To replace the display board in the 8-Slot chassis, follow these steps. You will
need a #1 Phillips screwdriver.
1 Turn off the system and unplug the power cord from the outlet and power
supply.
2 If your system is mounted in a rack, remove it from the rack and remove the
rack-mount brackets from the chassis.
3 Remove the cable strain-relief bracket, if it is installed.
4 Remove the cover from the chassis.
a Remove the screws from the back and sides of the chassis.
b Slide the cover toward the back of the chassis and lift it off.
5 Remove the front panel.
a From inside the chassis, press down on the locking tabs to release them (see
Figure 2-15).
b Gently tip the panel forward.
c Lift the panel out of the hinges at the bottom of the chassis.
Figure 2-15 Locking Tabs for the Front Panel on the 8-Slot Chassis
6 Slide the display board ribbon cable out of the cable clamp on the bottom of
the chassis.
Figure 2-16 Display Board Cable on 8-Slot Chassis
locking tabs
Front panel
Display board
ribbon cable
Cable clamp
Backplane
Back panel
Front panel
Power supply
Display board