IBM 6500-V5P Maintenance Manual - Page 463

Table 7. Power Stacker Problems Symptom Origin of Symptom Explanation Solution 019 STACKER FAULT CHECK STACKER Message on operator panel LCD. Stacker "chatters" at upper or lower limit Reported by customer. Stacker does not stack properly Reported by customer. Stacker elevator does not move Reported by customer. Stacker elevator moves by itself Reported by customer. Stacker limit switch check Other troubleshooting procedures. 1. The stacker elevator may be obstructed. The message will always occur if the user presses the ELEVATOR UP key on the stacker operator panel to move the elevator and the elevator is blocked so that it cannot move to the top of its travel. 2. Controller hardware tells firmware that an over-current condition exists. This will only occur if the controller board or the stacker motors are bad. Various causes possible. page 51 page 189 Various causes possible. Various causes possible. page 190 page 190 Various causes possible. page 190 This procedure tests the motion limit switch at the top and bottom of the right vertical rail. You will usually be referred to this procedure from other troubleshooting procedures. When you have completed this procedure, return to the procedure that sent you there. page 191 463