4 : P e r i o d i c M a i n t e n a n c e
CHRISTIE INC. - 35/70 Service/PM Manual
July, 1997
10. Check picture quality to ensure that ghosting, jitter, and weave are within acceptable limits. Refer to the
troubleshooting guide (Chapter 7) if adjustments are necessary.
Weekly Preventive Maintenance Requirements
Table 4.3 contains the weekly preventive maintenance checklist/log sheet.
1.
Using the ordinary toothbrush, brush off the teeth on all the sprockets. The sprockets are as shown in Figure 4.2.
2.
Clean the DTS head or Magnetic head with a cotton swab dipped in isopropyl alcohol or using a soft brush.
3.
Open the back of the projector and vacuum the circuit boards.
4.
Generally clean all surfaces in the back of the projector. Be careful to wipe around bearings. Do not let dust or
debris get into the bearings.
5.
Lubricate the gate center pin with a small amount of silicone grease.
6.
Remove and clean the gate glass (see Figure 4.2) with isopropyl alcohol and lens cleaning tissue.
7.
Ensure that the Delrin shoes on the movable gate have adequate spring tension; adjust the tension if it is too weak.
8.
Check all mechanical connections (screws, etc.) and tighten as needed.
