First Line Printing; Bidirectional Printing - IBM 4247 Maintenance Information

Checking Carriage Casting-To-Platen Gap
1. If installed, remove the front tractor.
2. Slide a single sheet of 20 lb (80 g/m
the platen. The paper should slide through the gap with the slightest resistance.
If the gap is acceptable, adjust the wheel position to get the pointer to point to '1' on the wheel.
Note: Now that this adjustment has been made, consider marking the gap full-open position for future reference
or if the wheel needs to be removed again.
- or -
If the gap is not acceptable, the needles are worn. Replace the printhead, and return to "Power On Check" on
page 289.

First Line Printing

This adjustment uses T&D15 to locate the first print-line, using the operator panel.
Service Check
The Vert and Load values should be zero, and the first line on the print test should be below the perforation.
Adjustment
1. Run the T&D program in single test mode.
v For Model A00, see "How To Run the Test and Diagnostic (T&D) Programs" on page 161.
v For Models 001, 002, and 003, see "How To Run the Test and Diagnostic (T&D) Programs" on page 201.
2. Scroll to T&D15

Bidirectional Printing

This procedure uses T&D16 and T&D14 to perform bidirectional adjustment from the operator panel.
Run the T&D program in single test mode.
v For Model A00, see "How To Run the Test and Diagnostic (T&D) Programs" on page 161.
2
) paper through the gap between the carriage casting and the surface of
Chapter 5. Removals and Adjustments
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