MX-C250 ADJUSTMENTS 5 – 1
MX-C250
Service Manual
[5] ADJUSTMENTS
1. General
Each adjustment item in the adjustment item list is associated with
a specific Job number. Perform the adjustment procedures in the
sequence of Job numbers from the smallest to the greatest.
However, there is no need to perform all the adjustment items. Per-
form only the necessary adjustments according to the need.
Unnecessary adjustments can be omitted. Even in this case, how-
ever, the sequence from the smallest to the greatest Job number
must be observed.
If the above precaution should be neglected, the adjustment would
not complete normally or trouble may occur.
2. Adjustment item list
Job
No
Adjustment item list
Simulation
ADJ 1
Adjusting high voltage values
1-A
Adjust the main charger grid voltage
8-2
1-B
Adjust the developing bias voltage
8-1
1-C
Transfer voltage adjustment
8-6
ADJ 2
Image density sensor (image registration
sensor) adjustment
2-A
Color image density sensor (image registration sensor F), black image
density sensor (image registration sensor R) adjustment
44-2
ADJ 3
Image skew adjustment (LSU unit)
61-4
ADJ4
ADJ 4 Print image position, image
magnification ratio, void area, off-center
adjustment (Print engine) (Manual adjustment)
4-A
Print image magnification ratio adjustment (main scanning direction) (Print
engine) (Manual adjustment)
50-10
4-B
Print image print area adjustment (Print engine) (Manual adjustment)
50-10/50-1
4-C
Print image position adjustment (Off-center direction, Paper transport
direction adjustment)
50-10
ADJ5
Print engine image distortion adjustment / OPC
drum phase adjustment / Color registration
adjustment (Print engine section)
5-A
Print engine image distortion adjustment (Manual adjustment) / OPC drum
phase adjustment (Automatic adjustment) /
color registration adjustment (Automatic adjustment)
50-22
5-B
Print engine image skew (LSU skew) adjustment (Manual adjustment) (No
need to adjust normally)
50-20/64-1
5-C
Color registration offset adjustment (No need to adjust normally)
50-20
ADJ6
Scan image magnification ratio adjustment
(Manual adjustment)
6-A
Scan image magnification ratio adjustment (main scanning direction)
(Manual adjustment) (Document table mode)
48-1
6-B
Scan image magnification ratio adjustment (sub scanning direction)
(Manual adjustment) (Document table mode)
48-1
6-C
Scan image magnification ratio adjustment (main scanning direction)
(Manual adjustment) (RSPF mode)?
48-1
6-D
Scan image magnification ratio adjustment (sub scanning direction)
(Manual adjustment) (RSPF mode)
48-1
ADJ7
Scan image off-center adjustment (Manual
adjustment)
7-A
Scan image off-center adjustment (Manual adjustment) (Document table
mode)
50-12
7-B
Scan image off-center adjustment (Manual adjustment) (RSPF mode)
50-12/50-6
ADJ8
Copy image position and image loss
adjustment (Manual adjustment)
8-A
Copy image position, image loss, and void area adjustment (Manual
adjustment) (Document table mode)
50-1
8-B
Copy image position, image loss, void area adjustment (Manual
adjustment) (RSPF mode)
50-6
ADJ 9
Color balance/density adjustment
9-A
Scanner calibration (Scanner calibration)
63-3
9-B
Copy/Printer color balance and density adjustment (Automatic adjustment)
(Basic adjustment)
46-24
9-C
Copy color balance and density adjustment (Manual adjustment)
46-21
9-D
Copy / Image send / FAX image quality adjustment (Individual adjustment)
46-1
9-E
Monochrome copy density adjustment (for each monochrome copy mode)
(separately for the low-density area and the high-density area) (No need to
adjust normally)
46-2
9-F
Automatic monochrome (Copy) mode document density scanning
operation (exposure operation) conditions setting (Normally no need to set)
46-19
9-G
Document low density image density reproduction adjustment in the
automatic (Copy/Scan/FAX) mode
No need to adjust normally) (Background density adjustment in the
scanning section)
46-32
9-H
Color copy simple density adjustment
46-27
9-I
Monochrome (Copy/Scan/FAX) mode color document reproduction
adjustment (No need to adjust normally)
46-37
9-J
Copy high density image density reproduction setting (Normally
unnecessary to the setting change)
46-23
9-K
RSPF mode (Copy/Scan/FAX) density adjustment (No need to adjust
normally)
46-9
9-L
Automatic color balance adjustment by the user (Color balance automatic
adjustment ENABLE setting and adjustment)
26-53
9-M
Copy gamma, color balance adjustment for each dither (Automatic
adjustment)
46-54
1
‘13/Aug
2
‘13/Oct
