IBM 6500-V1P Maintenance Manual - Page 64
in P107. Refer to the Main Wire Harness Test Tables on CLOSE PLATEN continued, SHUTL JAM
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Chapter 1 Troubleshooting Display Messages Operator Panel Message 057 CLOSE PLATEN (continued) 058 SHUTL JAM SEE USERS MANUAL Table 3. Message List Explanation Corrective Action The shuttle is not moving or is moving at the wrong speed. 12. Power on the printer in download mode and load flash memory (page 238). 13. If you encounter the failure after replacing the controller board, reinstall the original controller board and contact your DDS and Second Level Support. 1. Check the forms thickness lever: if it is set too tightly, it can slow the shuttle enough to trigger the fault message. Set the forms thickness lever to match the thickness of paper and provide satisfactory print quality, but not too tightly. 2. Check and adjust the platen gap. 3. Inspect the ribbon mask for bends or deformation that may snag and interfere with shuttle movement. Make sure the hammer bank cover assembly is correctly installed on its mounting pegs. 4. Run a print test. If the message appears, power off the printer, unplug the printer, and go to the next step. 5. Remove the shuttle cover. Remove the paper guide assembly or the pedestal top cover. Inspect the shuttle mechanism for obstructions. Check that all cables are attached at the shuttle and the controller board. Make sure the MPU cable is not pinched. (Refer to the Interconnection Diagrams on page 266.) Remove obstructions and reseat all cables. Check the resistance of MPU in P107. (Refer to the Main Wire Harness Test Tables on page 268.) Replace the MPU if it fails the test. 6. Plug in the printer and power it on. Run a shuttle test and observe shuttle movement. If the shuttle oscillates too slowly, adjust the gap between the MPU assembly and the flywheel to 0.010 ± .001 inch (0.254 ± 0.025 mm). Torque the 7/16 inch MPU clamp screw to 18 ± 1 inch-pounds (2.03 ± 0.11 N•m). If the shuttle does not move go to Shuttle Short Tests (page 252) and follow the steps exactly as listed. 7. Run a print test. If the message appears, replace the MPU intermediate cable assembly. 64