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MX-M264U ADJUSTMENTS AND SETTINGS 5 – 1

MX-M264U

Service Manual

[5] ADJUSTMENTS AND SETTINGS

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

Adjust the developing unit

Developing doctor gap adjustment

MG roller main pole position adjustment

Toner density control reference value setting

25-2

ADJ 2

Adjusting high voltage values

Adjust the main charger grid voltage

8-2

Adjust the developing bias voltage

8-1

Transfer current and voltage adjustment

8-6

ADJ 3

Image lead edge position,
image loss, void area, image off-
center, image magnification
ratio adjustment (Automatic
adjustment)

Print image off-center automatic adjustment (Print engine) (Each paper feed tray)

50-28

Copy mode image lead edge position, image loss, void area, image off-center, sub scanning
direction image magnification ratio automatic adjustment (Scanner) (Document table mode)

50-28

Copy mode image lead edge position, image loss, void area, image off-center, sub scanning
direction image magnification ratio automatic adjustment (Scanner) (RSPF mode)

50-28

ADJ 4

Scan image distortion
adjustment (Document table
mode)

Scanner (reading) unit parallelism adjustment

Scan image (sub scanning direction) distortion adjustment

Scan image (main scanning direction) distortion adjustment

ADJ 5

Scanner image skew adjustment (RSPF mode)

64-2

ADJ 6

Scan image focus adjustment

48-1

ADJ 7

Print lead edge image position adjustment (Printer mode)

50-5

ADJ 8

Image density adjustment

Scanner calibration (CCD calibration)

63-3 (63-5)

Copy / Image send / FAX image
quality adjustment (Individual
adjustment)

8B
(1)

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

8B
(2)

Automatic monochrome (Copy/Scan/FAX)
mode document density scanning operation
(exposure operation) conditions setting
(Normally no need to set)

46-19

8B
(3)

Document low density image density
reproduction adjustment in the automatic
monochrome (Copy/Scan/FAX) mode (No need
to adjust normally) (Background density
adjustment in the scanning section)

46-32

8B
(4)

Copy/Scan low density image density
adjustment (for each mode) (No need to adjust
normally) (Effective only for the color scan
function)

46-63

8B
(5)

Monochrome (Copy/Scan/FAX) mode color
document reproduction adjustment (No need to
adjust normally)

46-37

8B
(6)

RSPF mode (Copy/Scan/FAX) density
adjustment (No need to adjust normally)

46-9

ADJ 9

Paper size sensor adjustment