Gap Adj. Between LPH Chips: Correcting the Gap between LPH Chips

Adjust the gap (39 points) between LPH chips.

1. Press [Adjustment] on the [MACHINE] screen to display the [Adjustment Menu] screen.

2. Press [Machine Adjustment], [LPH Adjustment], and [Gap Adj. Between LPH Chips] in sequence.

3. In [Select Test Pattern], select either [Dark Gray] or [Light Gray].

   • Select [Dark Gray] if output contains white lines, or [Light Gray] if output contains black lines for ease of identification.

4. Select [OFF] from [Line Draw] and press [Print Mode].

5. Load A4 paper or 8.5 11 paper, then select that tray.

6. Press Start on the control panel.

   A sample pattern will be output.

7. Press [Exit PrintMode] to return to the [Gap Adj. Between LPH Chips] screen.

8. Select [ON] from [Line Draw] and press [Print Mode].

9. In the same way as for step 5, select the tray that has A4 paper or 8.5 11 paper loaded.

10. Press Start on the control panel.

    A sample pattern will be output.

11. Press [Exit PrintMode] to return to the [Gap Adj. Between LPH Chips] screen.

12. Compare the sample patterns output in step 6 and step 10 to identify the gap point to be corrected.

    • The patterns are drawn with white lines and black lines, and a black line represents a decuple of points.

    • Observe the white lines and black lines. The lines resulted from LPH should be drawn sharply. Focus on these sharp lines in order to identify the gap point.

    • The lines resulted from the process should be broad and blurred. Do not use such lines to identify the gap point.

    

13. On the [Gap Adjustment Between LPH Chips] Screen, select one from [1] to [39] point keys that corresponds to the identified gap point, then press [+] or [-] to enter setting data. To make universal adjustment, select [All Offset] and enter setting data.

    • Enter a [+] value for the case of white lines.

    • Enter a [-] value for the case of black lines.

    • Adjustment Range: ([Lighter]) -8 to +8 ([Darker]) (1 step = 1.0 %)

    • Too large adjustment value results in black lines, while too small value results in white lines.

14. Repeat steps 3 to 13 until the desired result is obtained.

15. Press [OK] to complete the setting.

    • To cancel the change, press [Cancel].

    In each case, the screen returns to the [LPH Adjustment Menu] screen.