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V
ARI
*L
ITE®
-
VL2B
AND
VL2C
S
POT
L
UMINAIRE
S
ERVICE
M
ANUAL
CONFIDENTIAL
02.9631.0010
15 Jan 98
3.2.2.7
Color Filters Not Working Properly
Step 1.
Open electronics chassis to gain access to mother board.
Step 2.
At mother board, ensure good yoke cable connection.
Step 3.
Remove head assembly covers to gain access to YTB.
Step 4.
At YTB, ensure good yoke cable and color wheel motor wire
connections.
Step 5.
At electronics chassis, replace CIB with known good board.
a. If new CIB solves problem replace IC2 for WH1 or IC3 for
WH2 on faulty CIB and retest . If problem not corrected
then return bad CIB.
b. If replacement does not solve problem, re-install removed
control interface board and continue with next step.
Step 6.
At CFB, inspect color wheels.
a. Clean wheels with glass cleaner as necessary. The optical
sensor may misinterpret dirt as sensor tape.
b. Ensure sensor tape is secured to wheel.
c. Check wheels for warping and bent filters. Replace wheels
as necessary. Refer to Color Filter Bulkhead Removal and
Replacement paragraph.
Step 7.
Ensure optical sensors are properly calibrated. Refer to Color
and Gobo Wheel Sensor Calibration paragraph.
Step 8.
If symptoms persist, replace yoke cable. Refer to Yoke Cable
Assembly Removal and Replacement paragraph.
