Christie CP42LH, Service Manual

Page: 78 / 90

Maintenance
CP42LH Service Manual 78
020-101686-03 Rev. 1 (08-2016)
• Mitsubishi bundle output inspection microscope (15x magnification)
• 1/8” tapered double headed cotton swabs
Prepare the fiber bundle for inspection and cleaning
1. Turn off the laser module breakers.
2. Pull the beam stop knob on the projector and rotate it to the closed position.
3. Unlock and open the optical access door. See Optical access door on page 43.
4. Remove the 4 screws securing the fiber optic strain relief cover and set the screws and cover
aside.
5. Remove the 4 screws securing the breakout ferrule and set the screws and ferrule aside.
6. Thread the fiber optic cable through the strain relief and out of the projector.
Inspect the fiber bundle input
1. Prepare the fiber bundle for inspection and cleaning. See Prepare the fiber bundle for
inspection and cleaning on page 78.
2. Put on a pair of powder free Nitrile gloves.
3. Remove a 1/8” cotton swab from its packaging, taking care not to touch the cotton tips.
4. Soak one end of the cotton swab in isopropyl alcohol.
5. Lightly shake the cotton swab to remove any excess liquid and clean the microscope adapter by
rotating the swab around and then in and out of the adapter.
6. Remove the tethered cap from the fiber optic cable.
7. Attach the SMA connector to the Mitsubishi fiber input inspection microscope.
8. Press and hold the black button on the handle of the Mitsubishi fiber input inspection
microscope to turn the inspection light on.
9. Turn the dial of the microscope barrel until the fiber bundle input is focused.
10. Examine the fiber bundle input for contaminants.
If the fiber bundle input appears clean, see Reassemble the projector and connect the fibers
to the light modules on page 81.
If the fiber bundle input appears dirty, see Clean the fiber bundle input with an aerosol duster
on page 78.
Clean the fiber bundle input with an aerosol duster
1. Prepare the fiber bundle for inspection and cleaning. See Prepare the fiber bundle for
inspection and cleaning on page 78.
2. Inspect the fiber bundle for cleanliness. See Inspect the fiber bundle input on page 78.