ETC Source Four Revolution with Wybron User Manual

Page 44

Source Four Revolution User Manual

Adjusting the front lens belt:

Step 1:

See

Step 2:

Using both hands, gently move the IMF assembly forward toward the front lens

so that you can access the front lens motor.

Step 3:

Using both hands, gently move the rear lens backward so that you can access

the motor.

Step 4:

Loosen, but do not remove, the four front lens motor mounting plate screws so

the motor moves freely.

Step 5:

Turn the pulley back and forth two or three times and allow the spring to take up

the slack in the belt.

Step 6:

Tighten the screws in a star pattern.

Step 7:

Pinch the belt together to ensure it maintains pressure.

Step 8:

Turn the motor by hand counter-clockwise to drive the lens until the IMF closes.

There should be a slight resistance. Continue turning to open the IMF.

Step 9:

Turn the motor by hand clockwise to move the lens back. If the IMF does not

close properly, readjust the front lens belt so that it is tighter.

Motor Adjustment

Screws.

Motor Pulley

Belt Tension

Motor Adjustment

Screws