IBM Infoprint 6500-v05 Maintenance Manual page 199

Symptom
Vertical misalignment of characters:
1. Dots or characters move up or
down from dot row to dot row or line to
line
2. Incorrect spacing from dot row to
dot row or line to line
3. Characters randomly compressed
and/or enlarged (continued)
Columns of blank spaces
Table 5. General Symptom List
16. Download and install the latest code from IBM First (page 231).
17. Power on the printer in download mode and load flash memory (page 238).
18. If you encounter the failure after replacing the controller board, reinstall the original controller board
and contact your DDS and Second Level Support.
19. Run a print test. If the problem occurs, do the power supply operational check (page 258). If the
power supply fails the check, replace it. If it passes the check, go to the next step.
20. Run a print test. If the problem occurs, replace the shuttle frame assembly.
NOTE: You may also be getting "Table Mismatch" errors.
1. Check the hammer bank logic cable for shorts (page 254).
2. Run the operator print test "All H's." If the print test shows horizontally compressed characters
arranged in 12 columns with approximately 8 mm of blank space between columns, the flex cable to
the shuttle driver card may have cold solder joints.
3. Replace shuttle frame assembly.
Corrective Action
General Symptom List
199