Troubleshooting guide

APPENDIX G
REMOVING/INSTALLING STEPPER MOTOR AND CAM
(CONTAINER OPEN)
1. Pull out the drawer, release the interlock, and extend the locking bolts to the locked position.
2. Turn the X-07 dial to the left until the bolt is fully extended.
3. Remove the drawer head cover plate.
4. Remove the back drill plate and filler plate.
5. Remove the X-07 cover assembly (backplate).
Remove the two screws on perimeter of the cover assembly. One is on the end of cover
assembly and the other is on the side. Both screws are Phillips head screws and require a
#2 Phillips screw driver.
Lift the cover assembly out perpendicular to the lock assembly. Care must be exercised
here because the female connector on the system card mates up with an 11 pin male con-
nector on the case assembly. If removed at a severe enough angle, the 11 pin male connec-
tors may have one or more pins slightly bent. Even a slightly bent pin may prevent, or inhibit,
the reinstallation of the cover assembly.
6. With cover assembly removed, remove the straight slot/hex screw (depending on type of
screw) from center of cam. (Fig. 7 & 8) This screw attaches the drive cam to the spindle.
7. With screw removed, remove the drive cam from the spindle.
8. Remove the dial assembly and spindle by pulling on the dial knob from the front.
9. Locate the stepper motor in the case assembly. (Fig. 7, 8)
a. Oldest style has two Phillips head screws with a shield.
b. Newer style has two T-8 Torx mounting screws, without a shield.
10. Remove the stepper motor. (If it has a shield, remove it. Do not reinstall the shield).
11. To install the stepper motor with proper timing you must have the stepper motor gear in the
home position, and the X-07 bolt in the extended position.
a. To time the stepper motor, see Fig. 6.