4 : O p e r a t i n g t h e P r o j e c t o r
CHRISTIE DIGITAL SYSTEMS
CineX35 Projector
4-2
May, 2004
3. Secure lens system with two locking screws.
Over-tightening can cause focus mechanism to bind.
4.3. F
I L M
T
H R E A D I N G A N D
O
P E R A T I N G
P
R O C E D U R E
Refer to Figure 4-1 for film threading and positioning using flywheel.
1. Set Ultramittent to its rest position. There should be no sprocket movement when motor
flywheel is turned.
2. Center framing knob (P) by aligning mark on knob with line on projector housing marked
CENTER FRAME
.
3. Swing out pad rollers (B, F, L)
on constant-speed sprockets (A & G).
4. Swing out film shoe on Ultramittent assembly (E).
5. Pull out catch knob (D)
and swing out gate assembly (C).
6. Using slightly more film length than is required to reach film transport system, begin to
thread film into projector.
7. Align film on Ultramittent sprocket and close Ultramittent film shoe.
8. To form proper loop between Ultramittent and lower constant-speed sprocket:
a) Pull film loosely over lower constant-speed sprocket, form loop as shown on Figure
4-1.
b) Mate film sprocket holes with sprocket pins.
c) Hold film in position and close pad rollers.
9. Thread film on sound-head assembly as shown in Figure 4-1:
a) Holding two lateral guide rollers (H and K) towards each other, pull film tight and
align film on lower constant-speed sprocket assembly (G).
b) Tighten film on one sprocket hole so lateral guides barely float off sound drum.
c) Close pad rollers (L) of lower constant-speed sprocket.
