Philips Vari-lite VL3015LT, Service Manual, Page: 60 / 184

VARI
❋
LITE - VL3015LT S
POT
L
UMINAIRES
S
ERVICE
M
ANUAL
4 2 0 2 . 9 6 9 8 . 0 0 1 0 0
Tilt Encoder PCB Replacement
Vari-Lite Part No: 24.9661.5000
To remove and replace tilt encoder PCB:
Step 1. Remove power from luminaire.
WARNING: You must remove all power from luminaire before performing maintenance. Fixture
may be very HOT after operation. Allow it to cool completely before performing any maintenance.
Step 2. At tilt-side leg, remove yoke leg cover by removing four 6-32x3/8" PTB screws.
Step 3. At tilt motor assembly, loosen four 10-32x1/2" PPZ screws.
Step 4. Remove belt from tilt pulley.
Step 5. Remove four 10-32x1/2" PPZ screws. Be mindful of tensioning springs.
Step 6. Disconnect wiring and remove tilt assembly.
Step 7. On tilt assembly, remove two 4-40x1/4" LG PPZ screws and remove encoder PCB.
Step 8. Replace by performing steps 2 through 7 in reverse order.
Note: Make sure encoder disk passes through sensor when installing encoder PCB and wiring is not
pinched during installation. When tightening four 10-32x1/2" PPZ screws that mount Pan Motor
Assembly, you must tighten in a CLOCKWISE pattern starting with screw in lower left-hand side from
spring.
Figure 2-19: Tilt Encoder PCB Replacement
Tilt Motor
Assembly
Spring
Head not shown for clarity.
NOTE:
Tilt Encoder
Tilt Motor Assembly Detail
Tilt Belt
Sensor Bracket