Fellowes Standard Morgana FRN-6, Service Manual

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N U M B E R E R
PAGE 25
M A N UAL
Section 8 REGISTRATION
The small pulley that drives the clutch belt (under the cover, next to
the handwheel), has it's grub screw outside the cover and can be
released by the operator, so must therefore be carefully checked.
Loose pulleys may be detected by holding the large clutch pulley
whilst carefully trying to turn the machine backwards and forwards
by hand.
Insufficient drive on the paper between the input rollers will also
cause registration errors so wind a sheet between the rollers while
holding the paper tight to see if this is the case. Check for a
complete revolution of the rollers to check for any low spots on the
rollers.
Due to the input rollers manufacturing tolerances, some
eccentricity (maximum of 0,03mm / 0.12”) is inevitable, but it’s
effects can often be minimised by adjusting the relative radial
position of the upper and lower rollers.
To carry out radial re-positioning of the input rollers, remove the
twin grip belt (see section 4) and turn each input roller in turn until
the highest point is at the top. Hold the rollers in this position and
replace the belt.
Note: ...... This procedure is only likely to be necessary if the input
rollers are worn and can only be considered as a
temporary measure.
Also check for loose or rough parts that may impede the paper
travel, including a sticking wheel on the hold-down wheels. Lift
hold-down wheels clear of the platen and spin them to ensure there
are no tight spots.
8.4 ...... Clutch Problems
Registration errors caused by clutch problems such as a loose
securing screw or the over-travel or actuator requiring adjustment,
are described fully in section 9 but don’t forget that the clutch unit
does have a working tolerance as stated at the beginning of this
section.