Ricoh Aficio Color 4006, Service Manual

Page: 346 / 487

24 February, 1999 PAPER TRANSPORT, FUSING, AND PAPER EXIT SECTIONS
6-75
Replacement
Adjustment
6.9.13 NIP BAND WIDTH ADJUSTMENT
NOTE: 1) Check and adjust the nip band width AFTER the copier has warmed up.
2) Place an OHP sheet on the by-pass feed table before starting this
procedure.
3) Use only A4/LT sideways (other sizes of OHP sheet may cause a paper
jam).
4) If a sorter is connected to the copier, disconnect the sorter connector
and remove the sorter, otherwise a paper jam will occur after ejecting
the OHP sheet.
1. Enter SP mode and measure the fusing nip band width (SP1-109).
2. When the OHP sheet is ejected, measure the nip width of the bands.
1) Use a rule to measure the width of the slightly opaque area on the OHP
sheet.
2) If the slightly opaque area has notched boundaries, measure the narrowest
width.
3) For both edges of the OHP sheet, measure the width 10 mm away from the
edge.
3. Check that the average width of the three bands (front, rear, and center)
matches the standard value.
Standard value
Center: 8.7
±
0.3 mm
Edge deviation: 0.5 mm maximum
4. If the measured nip width does not correspond to the standard value, adjust the
nip width using the pressure roller screw [A].
Then repeat steps 1 to 4 until the width is correct.
A259R515.WMF
[A]