IBM 4247-003 Maintenance Manual - Page 339

Table 49. Print Quality Tests and Actions (Fanfold) Line Description Action, if failure 1 Skew test in draft mode. The line should See "Main Paper Drive Check and print parallel to the edge of paper. Adjustment" on page 301. The upper right corner may be catching in printhead mask. 2 Skew test in NLQ mode. The line should See "Main Paper Drive Check and print parallel to the leading edge of paper. Adjustment" on page 301. 3 Logic and microcode data. 4 Printhead wire test. Print the T&D14 fanfold print test after completing each of the following steps: The 18-wire printhead (Models A00, 001, 1. Check the printhead cable connections. and 003) print wires are numbered 01A - Repair as needed. 09A and 01B - 09B (see Figure 93 on 2. Install a new printhead. See page 342). The 9-wire printhead (Model "Printhead" on page 356. 002) print wires are numbered 01 - 09 (see 3. Install a new logic board. For Model Figure 94 on page 343). A00, see "Logic Board - Model A00" on The wire numbers are printed under each group. Look for light or missing dots. The 18-wire printhead xxB line segments (see Figure 93 on page 342) should be slightly lower than the xxA line segments. page 370. For Models 001 and 002, see "Logic Board - Models 001 and 002" on page 378. Or "Logic Board Model 003" on page 366. 4. Install new printhead cable. 5. Run T&D in automatic mode to verify correct printer operation. For Model A00, see "How To Run the Test and Diagnostic (T&D) Programs" on page 161. For Models 001, 002, and 003, see "How To Run the Test and Diagnostic (T&D) Programs" on page 201. Chapter 5. Removals and Adjustments 339