Sharp MX-4100N Service Manual page 43

[5] ADJUSTMENTS
MX-5001N
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.
2. Adjustment item list
Job No
ADJ 1 Adjust the developing doctor gap
ADJ 2 Adjust the developing roller main pole
ADJ 3 Toner density control reference value setting
ADJ 4 Adjusting high voltage values
ADJ 5 Image density sensor (image registration
sensor) adjustment
ADJ 6 Image skew adjustment (LSU unit)
ADJ 7 OPC drum phase adjustment
ADJ 8 Print engine image magnification ratio adjustment (BK) (Main scanning direction) (Print engine section) (Manual adjustment)
ADJ 9 Image off-center adjustment (Print engine section)
ADJ 10 Image registration adjustment (Print engine
section)
ADJ 11 Scan image distortion adjustment
ADJ 12 Scan image focus adjustment (CCD unit
position adjustment)
ADJ 13 RSPF/DSPF parallelism adjustment
ADJ 14 Scan image magnification ratio adjustment
(Document table mode)
ADJ 15 Scan image magnification ratio adjustment
(RSPF/DSPF mode)
ADJ 16 Scan image off-center adjustment
ADJ 17 Print area (Void area) adjustment (Print engine section)
ADJ 18 Copy image position, image loss adjustment
ADJ 19 Print lead edge image position adjustment (Printer mode) (Print engine section)
Service Manual
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.
Adjustment item list
4A Adjust the main charger grid voltage
4B Adjust the developing bias voltage
4C Transfer voltage adjustment
5A Color image density sensor (image registration sensor F) calibration
5B Color image density sensor (image registration sensor F), black image
density sensor (image registration sensor R) adjustment
7A OPC drum phase adjustment (Auto adjustment)
7B OPC drum phase adjustment (Manual adjustment)
10A Image registration adjustment (Main scanning direction, sub scanning
direction) (Auto adjustment)
10B Image registration adjustment (Main scanning direction) (Manual
adjustment)
10C Image registration adjustment (Sub scanning direction) (Manual
adjustment)
11A Scanner (reading) unit parallelism adjustment
11B Scan image (sub scanning direction) distortion adjustment
11C Scan image (main scanning direction) distortion adjustment
11D Scan image distortion adjustment (Whole scanner unit)
12A Document table mode image focus adjustment
12B DSPF mode image focus adjustment
13A RSPF height adjustment
13B RSPF diagonal adjustment
13C DSPF levelness adjustment
13D DSPF skew adjustment
14A Scan image magnification ratio adjustment (Main scanning direction)
(Document table mode)
14B Scan image magnification ratio adjustment (Sub scanning direction)
(Document table mode)
15A Scan image magnification ratio adjustment (Main scanning direction)
(RSPF mode)
15B Scan image magnification ratio adjustment (Sub scanning direction)
(RSPF mode)
15C Scan image magnification ratio adjustment (Main scanning direction)
(DSPF mode)
15D Scan image magnification ratio adjustment (Sub scanning direction)
(DSPF mode)
16A Scan image off-center adjustment (Document table mode)
16B Scan image off-center adjustment (RSPF mode)
16C Scan image off-center adjustment (DSPF mode)
18A Copy image position, image loss adjustment (Document table mode)
18B Document scan position adjustment (RSPF mode)
18C Document scan position adjustment (DSPF mode)
18D Copy image position, image loss adjustment (RSPF mode)
18E Copy image position, image loss adjustment (DSPF mode)
MX-5001N ADJUSTMENTS 5 – 1
Simulation
25-2
8-2
8-1
8-6
44-13
44-2
61-4
50-22
44-31
50-10
50-10
50-22
50-20
50-21
48-1
48-1
48-1
48-1
48-1
48-1
50-12
50-12
50-12
50-10/50-1
50-1 (50-2)
53-8
53-8
50-6 (50-7)
50-6 (50-7)
50-5