COPY ADJUSTMENTS: PRINTING/SCANNING
B121 Series/B259 Series 3-54 SM
Sub-scan Magnification
1. Place the OS-A3 test chart on the exposure glass and make a copy from one of
the feed stations.
3. Check the magnification ratio. If necessary, adjust the magnification using the
following SP mode.
SP mode Specification
Sub-scan magnification SP4-008
± 1.0%
Standard White Density Adjustment
This procedure adjusts the standard white density level. Carry out this adjustment
after doing any of the following:
• After replacing the standard white plate.
• After replacing the NVRAM on the BICU. (Note: it is not necessary to carry
out this adjustment if you have replaced the BICU itself but retained the
previous NVRAM board [by moving it over onto the new BICU].)
• After performing a memory all clear (SP5-801-2 for Basic machine, SP5-
998-1 for MFP machine’s BICU engine).
Procedure:
1. Place 10 sheets of new A4/LTR paper (sideways, LEF) or new A3/DLT paper
on the exposure glass, and close the platen cover or the ADF.
2. Enter SP4-428-001 and select “1: YES”. The machine automatically adjusts the
standard white density.
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