Sharp AR-BC260 Service Manual page 115

The following functions (HV/HT/TC/RRM/MD) of SIM 44-1 must be set to Enable.
Item
HV Image forming section
correction (process
correction) (High-density
image density correction)
HT Half-tone image density
correction
HT (PRT) Half-tone image density
correction (Printer)
TC Transfer output correction
RRM RRM speed correction
MD Photoconductor membrane
decrease (sensitivity/
potential) correction
MD Photoconductor membrane
(PRT_BK) decrease (sensitivity/
potential) correction
(Printer: monochrome)
AR Image registration
automatic adjustment
AR CHK YES/NO of error judgment
in image registration
automatic adjustment
(Adjustment items which affect the copy color balance/density but need not to be adjusted frequently. When,
however, a trouble occurs, check and adjustment must be made.)
1) Adjustment item: ADJ 1, ADJ 7, ADJ 12, ADJ 13
JOB No
ADJ 1 High voltage adjustment
ADJ 7 Copy image focus (main scanning direction copy magnification ratio) adjustment (CCD unit position adjustment)
ADJ 12 Fusing pressure adjustment
ADJ 13 Fusing paper guide position adjustment
(Relationship between the service contents and the copy color balance/density adjustment)
Note that procedures before and after the copy color balance/density adjustment differ depending on the machine status and the servicing
job contents.
Perform proper procedures according to the flow of the copy color balance/density adjustment.
There are following five major cases:
1) When installing
2) When periodic maintenance
3) When consumable part is replaced in repair work
4) When consumable part is not replaced in repair/checking work
5) Other repair/check
Setting
ENABLE The developing bias voltage correction
and the main charger grid voltage
correction are not performed.
ENABLE The half-tone image density correction
is not performed.
ENABLE The half-tone image density correction
is not performed.
ENABLE Correction of change due to humidity
and correction of the transfer voltage
are not performed.
ENABLE Correction of change due to humidity
and correction of the rotate speed are
not performed.
ENABLE Correction of use frequency (sensitivity
change) of OPC drum is not performed.
(Main charger grid voltage correction)
ENABLE Correction of use frequency (sensitivity
change) of OPC drum is not performed.
(Main charger grid voltage correction)
Does not affect during image quality
adjustment.
Does not affect during image quality
adjustment.
ADJUSTMENT ITEM LIST
ADJ 1A Main charger grid voltage adjustment
ADJ 1B DV bias voltage adjustment
ADJ 1C Transfer voltage adjustment
AR-BC260 SETTING AND ADJUSTMENTS 8 - 22
Phenomenon when set to Disable
Insufficient image density, background
coy, improper color balance
Improper half-tone image density,
background copy, improper color
balance, tone jump
Improper half-tone image density,
background copy, improper color
balance, tone jump
Half-ton image section roughness,
improper image density, insufficient
density inside of image outlines
Improper color balance, roughness,
background coy, toner dispersion,
improper image density, image
deflection, image flow, image dirt
Improper image density, background
copy
Improper image density, background
copy
SIMULATION
8-2
8-1
8-6
48-1