IBM 4247 Maintenance Information page 179

Continue with the next step when the following message displays:
1. Install fanfold paper on the tractor assembly, and press the Load/Form Feed key.
2. Six blocks of the 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 15. Bidirectional Adjustment Printout
The alignment is correct if the I appears in the center of the H.
3. The following message will display:
4. Press any key to feed the paper back into the printer and the following message will display:
5. If the vertical alignment adjustment is correct, press the Micro
step 9.
6. If the vertical alignment adjustment is not correct, press the Load/Form Feed key to view the next display:
LOAD PAPER
+ VERT X -
PRESS A KEY
YES<- STORE ->NO
key to store the first print-line position. See
+ VERT X -
179
Chapter 2. Diagnostics