Troubleshooting guide

4. Stepper motor fails to step.
BACK COVER ASSEMBLY (ELECTRONIC CARD)
Extremely low probability since the lock did execute the combination properly and “OP” going
out indicates that the reed switch is detected.
HUB SET SCREW LOOSE OR GROOVED ON SPINDLE
1. May have enough torque to power up the X-07 but not enough to pull the X-07 bolt. Try to
determine if you can feel any feedback (rasping) from the generator being turned after
“OP” is displayed.
2. If you suspect hub set screws are loose (dial turns independently of spindle or can be pulled
towards you off of spindle), follow instructions in Appendix C.
DRIVE CAM ASSEMBLY, INSERT LOOSE
1. May have enough torque to power the X-07 but not enough to pull the X-07 bolt. Try to
determine if you can feel any feedback (rasping) from the generator being turned after
“OP” is displayed.
2. If you suspect the cam insert is loose (dial and spindle turning together and feels securely
attached to spindle), follow instructions in Appendix F.
STEPPER MOTOR FAILS TO STEP
The problem may be the stepper motor has a dead spot in the home position and will not step to
the cam engagement position.
Objective is to move stepper motor off the dead spot with vibrations. Several methods have
been very successful. But first, enter the combination up to the last digit and perform one of the
following before turning the dial to the right to get the “OP”.
1 . Moving the container handle up and down vigorously will sometimes generate enough vibra-
tion from the locking bars striking the X-07 bolt to move the motor off the dead spot.
2. Hitting the container with a deadblow hammer, heavy rubber mallet or a small sledge ham-
mer with a legal pad as padding at the 5 o’clock position on the container next to the dial ring
will sometimes provide the desired results.
CAUTION: Never hit the dial ring or the LCD.
3. A variable speed hammer drill with a dowel pin or center punch installed in the chuck has
worked extremely well at times. The best approach with this method is to turn the dial to the
right within a couple of seconds after starting the vibration and continue the vibration for at
least two complete revolutions of the dial. The speed of the drill setting appears to vary from