Vari Lite VL550, Service Manual

Page: 52 / 132

VARI
❋
LITE - VL550 W
ASH
L
UMINAIRES
S
ERVICE
M
ANUAL
3 4 2 5 M a r c h 2 0 1 1 0 2 . 9 6 8 3 . 0 0 1 0 0
Incandescent Lamp Socket Assembly Replace-
ment
Parts:
23.9685.0780 1 EA ASSY, LAMP SOCKET
Tools:
• #2 Phillips Screwdriver
• 1/4" Hex Nutdriver
To remove and replace lamp socket assembly:
Step 1. CLOSE ALL GLASS IN BULKHEADS - Power up unit and allow all
DICHRO*TUNE glass to calibrate. Once they close, power down unit.
WARNING:
Remove power from luminaire before performing maintenance.
Step 2. Disconnect luminaire AC input cable from power source.
Step 3. Engage tilt lock so luminaire head is in horizontal position with top cover (one with
bubble) facing up (as shown in
Figure 13
).
Step 4. Open heatsink by releasing latch.
Figure 13: Accessing the Lamp Socket in VL550 and VL550D Fixtures
Step 5. At top cover, remove four 6-32x1/4" PPB SEMS screws.
Step 6. Remove top cover.
Step 7. Remove Magenta/Blue Bulkhead Assembly as described in
“Magenta/Blue
DICHRO*TUNE Rear Bulkhead Replacement” on page 24
. Remove Magenta/Blue
bulkhead.
Step 8. Using soft cloth to protect lamp, remove lamp from socket.
Some components not shown for clarity.
NOTE:
Heatsink Assembly
Top Cover
Heatsink Latch
Lamp
Magenta/Blue Bulkhead Assembly