IBM 6400-I15 Maintenance Manual - Page 77
Stacker Fault, Check St, Acker
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panel (see Figure 61, page 380). Check cables for cuts, breaks, or damaged pins. Check continuity of cables. (See Appendix A.) Replace any cable that is damaged or fails continuity test. Reconnect all stacker cables to the CMX controller board, stacker, and stacker control panel. 019 STACKER FAULT CHECK STACKER Message NOTE: This message is triggered when the elevator cannot reach either the top or bottom position switch before timing out. 1. Power on the printer. Operate the power stacker. (Refer to the Operator's Guide.) Check for obstructions preventing elevator movement. Remove obstructions. 2. Operate the power stacker. While the stacker is operating, check that: a) all motors are operating b) the paddles are rotating c) the elevator moves smoothly and without obstruction d) the timing belts are undamaged and the belt pulleys are not slipping e) the extension springs are attached and undamaged (not bent or stretched) f) the drive rollers are not damaged g) the constant force springs are tightly mounted and undamaged Tighten pulley setscrews and/or replace damaged components as necessary. 3. Check for misaligned stacker rails Adjust the stacker rails if they are not vertical and parallel. 4. Check the stacker limit switches. (See page 129.) If the limit switches are OK, go to the next step. 5. Disable the power stacker unit under the Printer Control menu. (Refer to the Setup Guide.) If the message occurs, replace the CMX controller board. 6. Power off the printer. Remove the paper guide assembly. Disconnect stacker cables from the CMX controller board, stacker assembly, and the stacker control panel (see Figure 61, page 380). Check cables for cuts, breaks, or damaged pins. Check continuity of cables. (See Appendix A.) Troubleshooting 77