Ricoh D093 Service Manual page 583

2943 LED Duty Adjustment
Adjusts the on timing (the "width" or "duty") of the LEDs in the LPH units to
change image exposure. Use this SP if it is necessary to make the output of one
LPH block brighter or darker. Raising the setting creates darker pixels, lowering
the setting creates lighter pixels.
1 LPH1
[1.0 to 20.0/12.0/0.1%]
The optimum LPH settings are printed on the label that is attached
2 LPH2
to LPH replacement units. Always input these settings immediately
after the LPH unit has been replaced.
3 LPH3
2952 LPH Joint Adjustment
Adjust these settings only after you replace the LPH. For more, refer to
"Replacement and Adjustment".
1 LPH1-2 Main Scan
Adjusts the LPH joint for main scan between LPH1 and LPH2.
[0 to 999/500/1]
2 LPH2-3 Main Scan
Adjusts the LPH joint for main scan between LPH2 and LPH3.
[0 to 999/500/1]
11 LPH1-2 Sub Scan
Adjusts sub scanning at LPH 1-2 for paper more than 420 mm wide.
[300 to 500/412/1]
12 LPH2-3 Sub Scan
Adjusts sub scanning at LPH 2-3 for paper more than 420 mm wide.
[2 to 100/16/1]
SM Appendix 2-61
SP2-xxx Drum
D093/D094