7 : T r o u b l e s h o o t i n g G u i d e
CHRISTIE INC.
CHRISTIE INC. -
- 35/70 Service/PM Manual
July, 1997
CINE MOTION DIAGNOSTIC TABLE
1
Loop is lost as projector does Pulldowns.
Step
Diagnostic
Result
1
Verify proper adjustment of VR1 on the 2293 card. Adjust if
necessary. (See Section 6.7.)
2
It is possible for a Pulldown amplifier to have defective output
transistors and function in all modes except Pulldown. Replace 2275
card.
2
Douser does not function.
Step
Diagnostic
Result
1
Douser has been found to be mechanically free, and relays are secure in
their sockets. Verify that the douser relay does function. Determine bad
solenoid or wiring fault, and repair or replace.
2
If relay does not function, determine if fault is the driver on the 2285
shutter card, the solid-state douser interlock relay, the relay itself, the
control signal from the 2293 card, or a wiring fault. Replace or repair.
3
Projector does not respond to the EOF or BOF.
Step
Diagnostic
Result
1
Verify adjustment procedures for EOF and BOF sensors have been
properly executed. Adjust if necessary. (See Section 6.2.)
2
If adjustment procedure is not successful, determine the fault to be
associated with the EOF/BOF sensors or the circuits on the 2293 card.
Replace as required.
Table 7.12: Cine Motion Diagnostic Table
