CL100 / CL300 Service Manual - Welch Allyn

CHASSIS FAN REMOVAL
1. Remove 9 screws securing top cover and remove the cover. Remove 4 screws securing the fan to the back
panel.
2. Remove heat shrink tubing from the fan connector. Disconnect and remove the wire ties from the harness at
the platform mounts. Remove the fan.
3. Installation is the reverse process.
LED/OVERTEMP HARNESS REMOVAL
1. Remove 9 screws securing top cover and remove the cover. Remove the 5 screws securing the front bezel to
the bottom chassis and pull front panel out from chassis.
2. Remove the overtemp switch from the fan deflector assembly. Remove the wire tie from the overtemp switch
harness at the platform.
3. Using a sharp knife, remove the black RTV from the LED wires where it mounts to the front bezel. Once
removed, apply acetone to the LED and the front bezel to weaken the glue bond and remove the LED from the
front bezel.
4. Remove the 3 wire ties and remove the harness.
5. Installation is the reverse process. To attach the LED, ensure both the panel and the LED surfaces are clean.
Use superglue (loctite 430) to mount the LED. Use RTV sealant (Dow Corning 737) to seal the LED preventing
any light from the illuminator to pass through. See figure below for routing of wires.
LAMP CABLE REMOVAL
1. Remove 9 screws securing the top cover and remove the cover. Remove the 3 screws from the bottom of the
back panel. Remove the nut securing center baffle to the back panel. Slide back panel to the side.
PN: LB-MAN-CLSERV Rev. A 1-17