PRG Best Boy Field Service Manual - Manual (Page 90)

82 BEST BOY 4000 ® SPOT LUMINAIRE FIELD SERVICE MANUAL
Replacing Pan/Tilt Driver PCB
Parts:
24.9816.0765 / 2.3749A-P55 1 EA PCB ASSY, PAN/TILT DRIVER
Tools & Supplies:
#2 Phillips screwdriver
Sonic Tension Meter
Loctite #242 (06.6008.0001)
WARNING: Remove power from luminaire before performing any maintenance procedures.
CAUTION: Always use anti-static precautions when working with PCBs.
To replace the Pan/Tilt Driver PCB:
Step 1. Remove power from luminaire.
Step 2. Remove tilt-side yoke leg cover. (Refer to "Removing Yoke Leg Covers" on page 26.)
Step 3. At Tilt Drive Mechanism, loosen four 10-32 hex nuts so that Timing Belt becomes loose (Figure 3-50).
Step 4. Remove Timing Belt.
Figure 3-50: Removing Timing Belt
Timing Belt
Tilt Drive
Tilt-Side Yoke Leg
10-32 Hex Nut (4)
Mechanism