PRG Best Boy 4000 Service Manual page 60

Step 5. At bottom of Head Controller PCB, remove two 6-32 x 1/4" screws (Figure 3-26).
Step 6. Slide Head Controller PCB up and out of Head Assembly.
Step 7. Replace PCB by doing steps in reverse. When re-installing, insert PCB into slot of rails/retainers as shown
in Detail A below.
Use anti-static precautions
CAUTION: when working with PC boards.
®
52 BEST BOY 4000 SPOT LUMINAIRE FIELD SERVICE MANUAL
Head Controller PCB
Figure 3-26: Removing Head Controller PCB
"A"
DETAIL
CRITICAL!
Insert PCB into slot of rails/retainers
when re-installing.
6-32 x 1/4" Screw (2)