Bidirectional Adjustment; Sensor Tune - IBM 3 User Manual

5. Press Enter to display the current value.
6. Press Scroll or Scroll until the desired value for Manual Feed Paper Load
7. Press Enter.
8. Press Start or Return to exit the Menu. See "Exiting the Configuration Menu"

Bidirectional Adjustment

You can adjust dot registration and print quality for characters on your printer by
running the bidirectional adjustment test pattern. The test pattern consists of three
parts: two groups of Hs (four lines each) with the current alignment value above
them and a line of Hs and Is printed on one line. You can set bidirectional
adjustment from -6 to 6 (where each unit is 0.212 mm [1/120 in.]). The default
value is 0.
Note: Bidirectional Adjustment is available only in the Operator Print Tests menu.
To change or check the bidirectional adjustment:
1. Press Test.
2. Press Scroll or Scroll until the printer displays
3. Press Enter.
4. Press Scroll or Scroll until the printer displays
5. Press Enter to display the current value.
6. Press Scroll or Scroll until the desired value for Bidirectional Adjustment is
7. Press Enter.
8. Press Start or Return to exit the Menu. See "Exiting the Configuration Menu"

Sensor Tune

This parameter establishes the black light threshold levels for all sensors. This
adjustment is set initially by IBM when the printer is manufactured and may have
to be adjusted for long-term aging of the sensor if false form jams occur or if
unusual ambient lighting conditions exist in the printer location.
All paper must be removed from the tractors, and all covers must be installed and
closed before selecting this parameter.
Note: Sensor Tune is available only in the Operator Print Tests menu.
To tune the sensors:
172
4247 Model 003 User's Guide
Position is displayed.
An asterisk (*) will be displayed in front of the selected value.
on page 55.
4247 OPERATOR PRINT TESTS
Printer Adjustments
Printer Adjustments

Bidirectional Adjustment

displayed.
An asterisk (*) will be displayed in front of the selected value.
on page 55.