IBM 4247 Maintenance Information page 217

T&D16 - Bidirectional Adjustment Test
Note: This test allows the bidirectional adjustment to be made from the operator panel.
1. Display:
T&D16 Bidirectional Adjustment Test RUN TEST ? YES END NO
2. Press the Line Feed key.
If the following message displays, go to "T&D11 - Pinch Roller/Sensor Tune/Ribbon Feed and Lift
Motors" on page 208.
T&D16 Bidirectional Adjustment Test STORED PINCH XXXXX PRESS A KEY
Return here after the sensors are tuned.
3. If fanfold paper is not loaded, display:
T&D16 Bidirectional Adjustment Test LOAD PAPER
4. Install fanfold paper on the tractor assembly, and press the Load/Eject key.
5. Six blocks of Hs will be printed with a number in the middle and a line of Hs and Is printed on one
line. Next, the paper will feed to a position for viewing. Note the vertical alignment of the Is on the Hs
in the last line. Use an H and an I in the center of the line for this check and adjustment.
0
Use Center
Characters
Figure 22. Bidirectional Adjustment Printout
The alignment is correct if the x (a 1 for Model 001 and Model 003 or a 2 for Model 002) appears in
the center of the Hs.
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Chapter 2. Diagnostics