Vertical Magnification Adjustment - Ricoh C217 Service Manual

2.2 VERTICAL MAGNIFICATION ADJUSTMENT

ADJUSTMENT STANDARD:
Within 100 ± 0.8%
CAUTION: This adjustment is required when the main PCB has been
replaced.
NOTE: The horizontal magnification depends on the position of the CCD
PCB. (The standard is within 0.5%.)
1. Turn on the main switch, and make a print.
2. Compare the image on the print with that on the original.
3. Make sure that the difference of the vertical magnification is within the
standard (0.8% or less).
NOTE: If an original has a line of 100 mm in the exact vertical direction,
the line on the print should be between 99.5 to 100.5 mm.
4. If it is out of the standard, then adjust it. The vertical magnification
changes depending on the positions of DPS103-1, -2, and -3 (DIP
switches) on the main PCB as follows:
DPS103–1 –2
OFF OFF
OFF OFF
OFF ON
OFF ON
ON OFF
ON OFF
ON ON
ON ON
NOTE: The initial DPS settings differ from one machine to another as
they are adjusted during production.
SM
–3 Difference [%]
OFF
ON
OFF
ON
OFF
ON
OFF
ON
5-11
+1.75
+1.25
+0.75
0 (Standard)
–0.75
–1.25
–1.75
–2.25
C217