BAD BOY
®
SPOT LUMINAIRE FIELD SERVICE MANUAL
77
Replacing the Pan/Tilt COT Sensor PCB
Parts:
24.9679.0750
1 EA
PCB ASSY, PAN/TILT COT SENSOR
Tools:
#1 and #2 Philips screwdrivers
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 COT (Center of Travel) Sensor PCB:
Step
1. Remove power from luminaire and allow components to cool for at least 5 minutes.
Step
2. At Pan Yoke Leg, remove Yoke Leg Cover.
Step
3. Remove Cable Routing Plate by removing four 10-32 x 3/8" PFZ screws (
Figure 3-38
). Plate will remain
attached by cabling, so just allow to it hang out of the way during this procedure.
Note:
The Counterweight was added as a retrofit. If the Counterweight is not present, it should be added. Refer to
technical bulletin BAD-001 for instructions.
Figure 3-38: Removing Pan/Tilt COT Sensor PCB
Step
4. At Pan/Tilt Controller PCB, disconnect Pan/Tilt COT Sensor cable.
Step
5. At outside of yoke leg, remove two 4-40 x 3/8" PFZ screws (which secure standoff to yoke leg). This will free
Pan/Tilt COT Sensor PCB Assembly.
Step
6. Remove two standoffs from Pan/Tilt COT Sensor PCB Assembly by removing two 4-40 x
1/4" PPZ screws.
Counterweight / Cable Routing Plate
Handle
Pan/Tilt COT
Sensor PCB Assy
Pan/Tilt
Controller PCB
10-32 x 5/8"
Standoff (2)
4-40 x 1/4"
PPZ Screw (2)
4-40 x 3/8" PFZ Screw (2)
PFZ Screw (4)
Yoke Leg
(Pan Side)
CAUTION:
Use anti-static precautions
when working with PC boards.
