Outline; Adjustment Item List - Sharp MX-M550U Service Manual

MX-M700N
[6] ADJUSTMENTS
1. General

2. Outline

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. Perform only the necessary adjustments according to the need.
Unnecessary adjustments can be omitted. Even in this case, however, 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.

3. Adjustment item list

Job No
ADJ 1 Adjusting high voltage values
ADJ 2 Adjusting the developing unit
ADJ 3 Adjusting image distortions
ADJ 4 Adjusting DSPF parallelism
ADJ 5 Adjusting the image focus
ADJ 6 Adjusting the image magnification
ADJ7 Adjusting the image off-center
ADJ8 Adjusting the image position,
image loss, and void area
ADJ9 Adjusting the copied image quality
ADJ10 Adjusting the print quality in fax
mode
ADJ11 Adjusting the image quality in scan
mode
ADJ12 Common image quality
adjustments for all of copy, scan,
and fax modes
Adjustment item list
ADJ 1A Adjust the main charger grid voltage
ADJ 1B Adjust the developing bias voltage
ADJ 1C Adjust the transfer current, voltage
ADJ 2A Adjust the developing doctor gap
ADJ 2B Adjust the developing roller main pole
ADJ 3A Adjust print image distortions (LSU parallelism adjustment)
ADJ 3B Adjust the scanner (reading) unit parallelism
ADJ 3C Adjust scanned image distortions in the sub-scanning direction
ADJ 3D Adjust scanned image distortions in the main scanning direction – 1
ADJ 3E Adjust scanned image distortions in the main scanning direction – 2
ADJ 4A Adjust DSPF levelness
ADJ 4B Adjust DSPF skews
ADJ 5A Adjust the image focus in original table mode and DSPF front-face mode (CCD)
ADJ 5B Adjust the image focus in DSPF back-face mode (CIS)
ADJ 6A Adjust the image magnification in the main scanning direction in original table
mode (CCD)
ADJ 6B Adjust the image magnification in the sub-scanning direction in original table
mode (CCD)
ADJ 6C Adjust the image magnification in the main scanning direction in DSPF
front-face mode (CCD)
ADJ 6D Adjust the image magnification in the main scanning direction in DSPF
back-face mode (CIS)
ADJ 6E Adjust the image magnification in the sub-scanning direction in DSPF mode
ADJ 7A Adjust the print image off-center (print engine section)
ADJ 7B Adjust the scanned image off-center in original table mode (scan section)
ADJ 7C Adjust the scanned image off-center in DSPF front-face mode (scan section)
ADJ 7D Adjust the scanned image off-center in DSPF back-face mode (scan section)
ADJ 8A Adjust copied image loss/void area in original table mode
ADJ 8B Adjust the original scan start position
(adjust the scanner read position in DSPF-mode front face scan)
ADJ 8C Adjust the copied image loss/void area in DSPF mode
ADJ 8D Adjust the image loss in scanner mode
ADJ 8E Adjust the image loss for images sent in fax mode
ADJ 9A Adjust the binary mode copy density for all modes at once
ADJ 9B Adjust the copy density in text binary mode
ADJ 9C Adjust the copy density in text/photo binary mode
ADJ 9D Adjust the copy density in photo binary mode
ADJ 9E Adjust the copied image gamma in copy mode
ADJ 9F Adjust the copied image sharpness
ADJ10A Adjust the fax mode print density for all modes at once
ADJ10B Adjust the fax mode print density in standard mode
ADJ10C Adjust the fax mode print density in small-character mode
ADJ10D Adjust the fax mode print density in fine mode
ADJ10E Adjust the fax mode print density in super fine mode
ADJ10F Adjust the fax mode print density in 600dpi mode
ADJ11A Adjust the scan mode image density for all modes at once
ADJ11B Scan mode image density adjustment/individual setup (standard mode)
ADJ11C Scan mode image density adjustment/individual setup
(small-character mode)
ADJ11D Scan mode image density adjustment/individual setup (fine mode)
ADJ11E Scan mode image density adjustment/individual setup (super fine mode)
ADJ11F Adjust the image gamma in scanner mode
ADJ12A Correct the image density in original table mode/DSPF mode (Copy mode)
ADJ12B Set up the auto mode operation for copy, scan, and fax
MX-M700N ADJUSTMENTS 6 – 1
Simulation
8-2
8-1
8-6, 8-17, 8-18
64-1
64-1
48-1
48-1
48-1
48-1
48-1
48-1, 48-5
50-5 (50-10)
50-12
50-12
50-12
50-1
53-8
50-6
50-27
50-27
46-2
46-9, 10, 11
46-18
46-31
46-12
46-13, 46-14,
46-15, 46-16,
46-45
46-21
46-21, 46-22,
46-23, 46-24,
46-25
46-27
46-20
46-19