Read Sharp AR-405 Handy Guide online
TECHNICAL UPDATE
SHARP ELECTRONICS (UK) LTD
DOCUMENT SYSTEMS GROUP
41
VERSION 1C
MARCH 2002
COPY QUALIT
Y
Model
Fault
Advice
All
2mm broad blurred line across paper
(55mm from lead edge) especially
when using heavier paper.
(55mm from lead edge) especially
when using heavier paper.
Release tension on pressure springs
(MSPRC2639FCZZ)
in PS transport unit
by lengthening by 2mm.
All
Dark area on rear frame of copy.
Incorrect Doctor Blade setting – adjust
front and rear frame as per
specification.
front and rear frame as per
specification.
All
Uneven copies.
Check transport bed lift angles
(replace if broken)
(replace if broken)
All
Black lines in feed direction.
Dirty Main Charge. Replace saw tooth
plate & grid.
plate & grid.
All
Background only when using manual
exposure mode.
exposure mode.
Incorrect fitting of white reference
plate. Check white reference mylar is
face down, nearest the platen glass.
plate. Check white reference mylar is
face down, nearest the platen glass.
All
Intermittent elongated, smudged or
blurred copies.
Also causes Blank or Image Shift.
blurred copies.
Also causes Blank or Image Shift.
Check for installation of the TC earth
spring. Install if missing
(
spring. Install if missing
(
MSPRP1550FCZZ).
Also check for TC Arching due to
broken lift angles.
broken lift angles.
All
Image ghosting (first 10mm of copy
only) or horizontal lines.
only) or horizontal lines.
Faulty ICU PWB – replace.
All
Corruption of image data or “Bar
Coded” copies.
Coded” copies.
Electrical noise generated by LCC. Fit
ferrite core
ferrite core
(RCORF2043SCZZ &
RCORF0015FCZZ)
on PCU PWB (top
harness).
Also check AR-FN2 for static
electricity interfering with 5/24v. Fit
modified earth plates :- PG9/17
Also check AR-FN2 for static
electricity interfering with 5/24v. Fit
modified earth plates :- PG9/17
0CW4090P060//
and PG10/55
0CW4090P061//
(fitted as standard
from March’99).
All
Distorted copies when using
RSPF/RADF only.
RSPF/RADF only.
Check original stop position (Sim 53)
All
Intermittent rear edge blanking.
Main corona “Arching” – check for
cracked end blocks.
cracked end blocks.
All
Grey background darker in printed
areas (only copy or scan)
areas (only copy or scan)
Faulty CCD – replace.
All
Patchy / Very Pale copies
Ensure there is no blooming on
mirrors (especially on machines in
poor environmental conditions)
mirrors (especially on machines in
poor environmental conditions)
All
Line on lead edge of copy only.
Ensure the platen glass in installed
the correct way round (Bevel must be
to the right and uppermost).
the correct way round (Bevel must be
to the right and uppermost).
Click on the first or last page to see other AR-405 service manuals if exist.