Replacing The Display Board - 3Com NETBuilder II Installing Instruction

2-16 C 2: NETB
HAPTER UILDER
Replacing the Display
Board
II 8-S B /R
LOT RIDGE OUTER
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.
Power supply
Cable clamp
Display board
ribbon cable
Figure 2-16 Display Board Cable on 8-Slot Chassis
Front panel
locking tabs
Back panel
Display board
Front panel
Backplane