Gobo Index Timing Belt Alignment - Philips VL1000 TS Service Manual

VARI❋LITE® - VL1000™ ERS L

Gobo Index Timing Belt Alignment

The index timing belt (54.9663.1220) must be aligned so that the mechanism "clocks"
properly. This belt is installed around the index gear and top gear of the gobo wheel
(refer to
wheel position gear and bottom gear of the gobo wheel, and does not require
alignment. Each belt is also routed around one pulley as shown in
Note: The alignment procedure is the same for both arc and incandescent versions.
Use the following procedure to re-align the index timing belt in the event it slips or the
gobo wheel is removed from the bulkhead. (This procedure assumes that the wheel has
been removed from the bulkhead assembly. If you are simply re-aligning the belt, Step
2 can be skipped.)
To align index timing belt:
Step 1. At large gear, align one of belt's clock marks with small groove at inside of
Ridge
Groove
Clock Mark
use red mark (older belts)
or
ridge (newer belts)
30
S
UMINAIRE ERVICE
Figure 2-11). The wheel position belt (54.2045.0002) is installed around the
gear. The clock marks will either be two ridges (newer belts) or one ridge and
one red mark (older belts).
Index Timing Belt
Figure 2-10: Aligning Index Gear Groove and Clock Mark
14-May-2009
M
ANUAL
red mark will be one-tooth inside ridge,
use as clock mark (instead of ridge) if present
Index Gear (Larger Gear)
Index Timing Belt
Figure 2-11.
Ridge
Arc Gobo
Bulkhead
02. 96 63. 001 0 F