C
HAPTER
3. M
AINTENANCE
P
ROCEDURES
3-121
02.9631.0010
CONFIDENTIAL
15 Jan 98
d. For access to receptacle #3 and receptacle #4, remove card
cage assembly by doing the following:
i.
Remove all card cage assemblies. Refer to Card Cage
Assembly PCB Removal and Replacement paragraph.
WARNING: Stored charge in capacitors can cause electrical shock. Care
should be taken when power is applied to luminaire and for 10 minutes
after removing power from the luminaire. Always use caution when
working near capacitors.
ii. At transformer, at each bridge rectifier, from bottom of
chassis, remove one 8-32x1"PPB screw and 8-32 KEPS
nut that secure bridge rectifiers and transformer bracket
to chassis bottom.
iii. Without disconnecting bridge rectifier spade connectors,
move bridge rectifiers away from card cage.
iv. With bridge rectifiers out of way, pivot end of card cage
near bridge rectifier towards middle of chassis to release
end of card cage from top lip of chassis and move card
cage to gain access to receptacle.
Step 6.
At bottom of chassis, remove chassis lining covering damaged
receptacle.
Step 7.
Using center punch, punch center of two rivets that secure
damaged receptacle and stop to chassis.
Step 8.
Using #30 drill bit and drill, drill out rivets.
Step 9.
Remove damaged receptacle and stop.
Step 10.
Place replacement truss hook fastener assembly over rivet holes.
Step 11.
Place one 5/16" flat washer onto 5/16-18X1"HCSZ screw and
insert screw and washer through fastener assembly so that
screw head is on outside of chassis (Figure 3-44). At other end
of screw, install second flat washer on screw and firmly tighten
nut onto screw. Screw will hold fastener assembly securely to
chassis when installing pop rivets.
