3-104
V
ARI
*L
ITE®
-
VL4
W
ASH
L
UMINAIRE
S
ERVICE
M
ANUAL
CONFIDENTIAL
02.9628.0010
7-Oct-97
Step 4.
Remove yoke termination PCB (Figure 3-22).
Step 5.
Remove lamp assembly.
a. At lamp assembly, turn 1/4-turn fasteners on rear of lamp
assembly and carefully slide out lamp assembly from
luminaire head (Figure 3-19).
Step 6.
At lamp carriage, squeeze and lift lamp retainer. Remove lamp
from carriage.
Step 7.
Remove blue/amber bulkhead (Figure 3-1).
Step 8.
Remove dimmer/filter/douser assembly from luminaire head
(Figure 3-7).
Step 9.
Remove ignitor PCB (Figure 3-23).
Step 10.
Remove cable side rail cover and cable tie that secures yoke
cables.
a. At cable side rail cover, remove three 6-32x5/16"PPB
screws that secure cable side rail cover to side rail and
remove cover.
b. Using diagonal cutters, remove cable tie that secures three
cables to cable side rail.
Step 11.
For removal of lamp wire only, at green grounding wires next
to tilt tube, using 5/16 inch nutdriver, remove 6-32 KEPS nut
and ring lug.
Step 12.
Remove both air filters and chassis covers.
a. At each electronics chassis air filter, while pressing down on
filter, pop out top of filter from chassis and fully remove
filters.
b. Remove eight 6-32x5/16"PPB screws that secure two top
covers to chassis and remove covers.
Step 13.
Remove low voltage supply and universal control PCBs
(Figure 3-31).
a. At card retainer, press down on spring release and open
retainer.
b. Pull out low voltage supply PCB and universal control PCB.
Step 14.
Remove power supply.
a. At bottom of chassis, in countersink, remove
6-32x5/16"PPB screw securing power supply.
b. Pull out power supply.
