MUTOH Rockhopper II series Maintenance Manual page 306

20 A limited line in the paper feed
direction is not accurate ( in the
sub scanning direction)
A : Paper discharging direction
21 Straightness in the paper feed
direction is not accurate (paper
joint accuracy).
A : Paper discharging direction
Rockhopper II series printers – Maintenance Manual
(1) Check if the use
conditions are within
the normal
operation
conditions.
(2) Check if distance
is compensated for
the paper in use.
(3) Check the PF
drive pulley for
looseness.
(4) Make sure that
the PF reduction
belt tension is
adjusted correctly.
(5) Check the
rotation of the
pressure roller with
the pressure arm at
the raised position.
(6) Check the grid
roller for rugged
movement. Also,
check the rotary
movement for
irregularities.
(7) If the paper in
concern is roll
paper, check if the
scroller is rotating
smoothly.
(1) Check if the
actually installed
head rank and the
registered head
rank match.
(2) Adjust the
inclination of the
head.
(3) Check if the
tension of the steel
belt is adjusted
correctly.
(4) Check the two-
way printing position
alignment for
problems.
(5) Check if the CW
adjustments are
made correctly.
(6) Check the T
fence for
contamination.
(7) Check the CR
cursor assembly for
play.
307
• Be sure to use the
product under the
operation
conditions.
• Compensate the
distance.
• Replace the PF
motor assembly.
• Adjust the tension
of the PF reduction
belt.
• If the surrounding
area of the pressure
roller is
contaminated by
paper dust and
waste paper, wipe it
with a soft
dampened cloth.
• If foreign material
such as paper dust
and wastepaper are
found on the grid
rollers, remove them
using a nylon brush.
• Make sure that the
scroller receiver is
installed correctly.
• Replace the rollers
of the scroller.
• Input the correct
head rank.
• Adjust the
inclination of the
head.
• Adjust the steel
belt tension.
• Adjust the two-way
printing position
alignment.
• Perform the CW
adjustments.
• Clean the T fence
• If contaminants
cannot be cleaned
up, replace the T
fence.
• Replace the CR
cursor assembly.
AP-74065, Rev. 1.2, 27/09/04
-
→ Band feed
correction menu
→ Replacing the PF
motor assembly.
→ PF deceleration
belt tension
adjustment
→ User's Guide
→ User's Guide
→ Replacing the
scroller R assembly.
→ Replacing the
scroller L assembly.
→ Head rank input
menu.
→ Head precision
adjustment.
→ Steel belt tension
adjustment.
→ Repeatability
alignment menu
→ CW adjustments
menu
→ Replacing the T
fence
→ Replacing the CR
cursor assembly.