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
SLEW MOTION DIAGNOSTIC TABLE
A-1
Film does not ramp smoothly to 120 frames per second –
CONDITION 1: Film ramps up smoothly to near maximum speed, then becomes
unstable.
Step
Diagnostic
Result
Verify that the +24VDC voltage at the positive end of C8 of the 2285
card is at the proper value. If not, repair.
A-2
Film does not ramp smoothly to 120 frames per second –
CONDITION 2: Film ramps up smoothly to maximum speed but upper loop is
lost while going forward.
Step
Diagnostic
Result
1
Verify that the Constant Velocity Tach voltage reaches the 2293 card.
If not, repair wiring.
2
If condition remains, replace the 2293 card.
A-3
Film does not ramp smoothly to 120 frames per second –
CONDITION 3: Film ramps up smoothly to near maximum speed, but then upper
or lower limit switch trips system to NOT READY.
Step
Diagnostic
Result
1
Verify that the +24VDC voltage to the associated 2285 card is at the
proper value. If not, repair.
2
If condition remains, replace the 2285 card associated with the
defective system.
Table 7.10: Slew Motion Diagnostic Table