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MX-5111N EXTERNAL VIEW AND INTERNAL STRUCTURE 3 – 20
No.
Name
Function/Operation
1
Paper feed roller (Manual paper feed tray)
Feeds paper to the paper transport section.
2
Separation roller (Manual paper feed tray)
Separates paper to prevent Double Feed.
3
Paper pickup roller (Manual paper feed tray)
Sends paper to the paper feed roller.
4
Paper feed roller (No. 1 paper feed tray)
Feeds paper to the paper transport section.
5
Paper pickup roller (No. 1 paper feed tray)
Sends paper to the paper feed roller.
6
Separation roller (No. 1 paper feed tray)
Separates paper to prevent Double Feed.
7
Paper feed roller (No. 2 paper feed tray)
Feeds paper to the paper transport section.
8
Paper pickup roller (No. 2 paper feed tray)
Sends paper to the paper feed roller.
9
Separation roller (No. 2 paper feed tray)
Separates paper to prevent Double Feed.
10
Registration roller (Drive)
Transports paper to the transfer section. Controls the paper transport timing to adjust relative relations
between images and paper.
between images and paper.
11
Registration roller (Idle)
Applies a pressure to paper and the registration roller to give the transport power of the transport roller to
the paper.
the paper.
12
Transport roller 1 (Idle)
Applies a pressure to paper and the transport roller to give the transport power of the transport roller to
the paper.
the paper.
13
Transport roller 1 (Drive)
Transports paper from No. 3 and No. 4 paper feed tray to the transport roller 4.
14
Transport roller 3 (Idle)
Reduces friction between paper and the paper guide.
15
Transport roller 4 (Idle)
Applies a pressure to paper and the transport roller to give the transport power of the transport roller to
the paper.
the paper.
16
Transport roller 4 (Drive)
Transports paper from the transport roller 1 and paper feed roller (No. 2 paper feed tray) to the transport
roller 7.
roller 7.
17
Transport roller 5 (Drive)
Transports paper from the paper feed tray 1 to the transport roller 7.
18
Transport roller 5 (Idle)
Applies a pressure to paper and the transport roller to give the transport power of the transport roller to
the paper.
the paper.
19
Transport roller 6 (Idle)
Reduces friction between paper and the paper guide.
20
Transport roller 7 (Idle)
Applies a pressure to paper and the transport roller to give the transport power of the transport roller to
the paper.
the paper.
21
Transport roller 7 (Drive)
Transports paper from the paper feed tray 1, 2, 3, and 4 to the transport roller 8.
22
Transport roller 8 (Idle)
Applies a pressure to paper and the transport roller to give the transport power of the transport roller to
the paper.
the paper.
23
Transport roller 8 (Drive)
Transports the paper to registration roller.
24
Transport roller 9 (Idle)
Applies a pressure to paper and the transport roller to give the transport power of the transport roller to
the paper.
the paper.
25
Transport roller 9 (Drive)
Transports paper from the fusing roller to the transport roller 13.
26
Transport roller 10 (Idle)
Applies a pressure to paper and the transport roller to give the transport power of the transport roller to
the paper.
the paper.
27
Transport roller 10 (Drive)
Transports paper from the transport roller 13 to the transport roller 11.
28
Transport roller 11 (Idle)
Applies a pressure to paper and the transport roller to give the transport power of the transport roller to
the paper.
the paper.
29
Transport roller 11 (Drive)
Transports paper from the transport roller 10 to the transport roller 12.
30
Transport roller 12 (Idle)
Applies a pressure to paper and the transport roller to give the transport power of the transport roller to
the paper.
the paper.
31
Transport roller 12 (Drive)
Transports paper from the transport roller 11 to the transport roller 8. / Transports the paper from the
manual paper feed tray to the transport roller 8.
manual paper feed tray to the transport roller 8.
32
Transport roller 13 (Drive)
Transports paper to the duplex (ADU) section. /
Transports paper to the paper exit roller 2.
Transports paper to the paper exit roller 2.
33
Transport roller 13 (Idle)
Applies a pressure to paper and the transport roller to give the transport power of the transport roller to
the paper.
the paper.
34
Paper exit roller 1 (Idle)
Applies a pressure to paper and the paper exit roller to give the transport power of the paper exit roller to
the paper.
the paper.
35
Paper exit roller 1 (Drive)
Discharges paper. Transports paper to the right paper exit tray. Transport paper to the duplex (ADU)
section.
section.
36
Paper exit roller 2 (Idle)
Applies a pressure to paper and the paper exit roller to give the transport power of the paper exit roller to
the paper.
the paper.
37
Paper exit roller 2 (Drive)
Discharges paper.
38
Fusing roller (Heating)
Heat and press toner onto paper to fuse images.
39
Fusing roller (Pressing)
Applies a pressure to the fusing roller (heating).
40
Transport roller 14 (Drive)
Transports paper from the paper feed tray 2 to the transport roller 4.
41
Transport roller 14 (Idle)
Applies a pressure to paper and the transport roller to give the transport power of the transport roller to
the paper.
the paper.
MX-5111N ADJUSTMENTS AND SETTINGS 4 – 1
MX-5111N
Service Manual
[4] 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.
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.
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
1A
Adjust the developing doctor gap
1B
Adjust the developing roller main pole position
1C
Toner density control reference value setting
25-2
ADJ 2
Adjusting high voltage values
2A
Adjust the main charger grid voltage
8-2
2B
Adjust the developing bias voltage
8-1
2C
Transfer voltage adjustment
8-6
ADJ 3
Image density sensor adjustment
3A
Image density sensor calibration
44-13
3B
Color image density sensor (image registration sensor F), black image density sensor
(image registration sensor R) adjustment
(image registration sensor R) adjustment
44-2
ADJ 4
Image lead edge position, image
loss, void area, image off-center,
image magnification ratio
adjustment
(Automatic adjustment)
loss, void area, image off-center,
image magnification ratio
adjustment
(Automatic adjustment)
4A
Print image main scanning direction automatic magnification ratio adjustment (Print engine)
50-28
4B
Print image off-center automatic adjustment (Print engine) (Each paper feed tray)
50-28
4C
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)
direction image magnification ratio automatic adjustment (Scanner) (Document table mode)
50-28
4D
Copy mode image lead edge position, image loss, void area, image off-center, sub scanning
direction image magnification ratio automatic adjustment (Scanner) (RSPF mode)
direction image magnification ratio automatic adjustment (Scanner) (RSPF mode)
50-28
4E
DSPF mode image off-center, image lead edge position, sub scanning direction image
magnification ratio auto adjustment
magnification ratio auto adjustment
ADJ 5
Print engine image distortion
adjustment / OPC drum phase
adjustment / Color registration
adjustment (Print engine section)
adjustment / OPC drum phase
adjustment / Color registration
adjustment (Print engine section)
5A
Image skew adjustment (LSU unit)
50-20 (61-4)
5B
Print engine image distortion adjustment (Manual adjustment) / OPC drum phase
adjustment (Automatic adjustment) / Color registration adjustment (Automatic adjustment)
adjustment (Automatic adjustment) / Color registration adjustment (Automatic adjustment)
50-22
5C
Color registration offset adjustment (No need to adjust normally)
50-20
ADJ 6
Scan image distortion adjustment
(Document table mode)
(Document table mode)
6A
Scanner (reading) unit parallelism adjustment
6B
Scan image (sub scanning direction) distortion adjustment
6C
Scan image (main scanning direction) distortion adjustment
6D
Scan image distortion adjustment (Whole scanner unit)
ADJ 7
Scanner image skew adjustment
(DSPF/RSPF mode)
(DSPF/RSPF mode)
7A
RSPF height adjustment
64-2
7B
RSPF skew adjustment (Front surface mode)
7C
DSPF parallelism adjustment
7D
DSPF skew adjustment (Front surface mode)
7E
DSPF skew adjustment (Back surface mode)
ADJ 8
Scan image focus adjustment
(CCD unit position adjustment)
(CCD unit position adjustment)
8A
Document table mode image focus adjustment
48-1
8B
DSPF mode image focus adjustment
ADJ 9
Print lead edge image position adjustment (Printer mode)
50-5
ADJ 10/
SET1
Color balance/density
adjustment
adjustment
Note before execution of the image quality adjustment
Copy image quality check
Printer image quality check
Copy image quality check
Printer image quality check
10A
Scanner calibration (CCD calibration)
63-3 (63-5)
SET
1
Color balance
adjustment target setup
adjustment target setup
1A
Copy color balance adjustment target setup
63-7/8/11
1B
Printer color balance adjustment target setup
67-26/27/28
10B
Copy/Printer color balance and density adjustment (Automatic adjustment)
(Basic adjustment)
(Basic adjustment)
46-74
10C
Copy quality adjustment
(Basic adjustment)
(Basic adjustment)
10C
(1)
Copy color balance and density adjustment
(Automatic adjustment)
(Automatic adjustment)
46-24
10C
(2)
Copy color balance and density adjustment
(Manual adjustment)
(Manual adjustment)
46-21
10D
Copy / Image send / FAX
image quality adjustment
(Individual adjustment)
image quality adjustment
(Individual adjustment)
10D
(1)
Color copy density adjustment (for each color copy
mode) (separately for the low-density area and the high-
density area) (No need to adjust normally)
mode) (separately for the low-density area and the high-
density area) (No need to adjust normally)
46-1
10D
(2)
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)
monochrome copy mode) (separately for the low-density
area and the high-density area) (No need to adjust
normally)
46-2
10D
(3)
Color copy color balance, gamma adjustment (for each
color copy mode) (No need to adjust normally)
color copy mode) (No need to adjust normally)
46-10
10D
(4)
Monochrome copy density, gamma adjustment (for each
monochrome copy mode) (No need to adjust normally)
monochrome copy mode) (No need to adjust normally)
46-16
1
: '11/Jul/25
1
MX-5111N ADJUSTMENTS AND SETTINGS 4 – 2
ADJ 10/
SET1
Color balance/density
adjustment
adjustment
10D
Copy / Image send / FAX
image quality adjustment
(Individual adjustment)
image quality adjustment
(Individual adjustment)
10D
(5)
Automatic monochrome (Copy/Scan/FAX) mode
document density scanning operation (exposure
operation) conditions setting (Normally no need to set)
document density scanning operation (exposure
operation) conditions setting (Normally no need to set)
46-19
10D
(6)
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)
adjustment in the automatic monochrome (Copy/Scan/
FAX) mode (No need to adjust normally)
(Background density adjustment in the scanning section)
46-32
10D
(7)
Copy/Scan low density image density adjustment
(for each mode) (No need to adjust normally)
(for each mode) (No need to adjust normally)
46-63
10D
(8)
Color copy, text, line image reproduction adjustment
(edge gamma, density adjustment) (Text, Map mode)
(No need to adjust normally)
(edge gamma, density adjustment) (Text, Map mode)
(No need to adjust normally)
46-27
10D
(9)
Monochrome (Copy/Scan/FAX) mode color document
reproduction adjustment (No need to adjust normally)
reproduction adjustment (No need to adjust normally)
46-37
10D
(10)
(10)
Color copy mode dark area gradation (black component
quantity) adjustment (No need to adjust normally)
quantity) adjustment (No need to adjust normally)
46-38
10D
(11)
Color (Copy/Scan) mode sharpness adjustment
(No need to adjust normally)
(No need to adjust normally)
46-60
10D
(12)
(12)
Copy high density image density reproduction setting
(Normally unnecessary to the setting change)
(Normally unnecessary to the setting change)
46-23
10D
(13)
(13)
Copy color balance adjustment (Single color copy mode)
(No need to adjust normally)
(No need to adjust normally)
46-25
10D
(14)
(14)
DSPF/RSPF mode (Copy/Scan/FAX) density adjustment
(No need to adjust normally)
(No need to adjust normally)
46-9
10D
(15)
(15)
Automatic color balance adjustment by the user
(Copy color balance automatic adjustment ENABLE
setting and adjustment)
(Copy color balance automatic adjustment ENABLE
setting and adjustment)
26-53
10D
(16)
(16)
Copy gamma, color balance adjustment for each dither
(Automatic adjustment)
(Automatic adjustment)
46-54
10D
(17)
(17)
Dropout color adjustment (Normally not required)
46-55
10D
(18)
(18)
Watermark adjustment (Normally not required)
46-66
10E
Printer image quality
adjustment
(Basic adjustment)
adjustment
(Basic adjustment)
10E
(1)
Printer color balance adjustment (Automatic adjustment)
67-24
10E
(2)
Printer color balance adjustment (Manual adjustment)
67-25
10F
Printer image quality
adjustment
(Individual adjustment)
adjustment
(Individual adjustment)
10F
(1)
Printer density adjustment (Low density section density
adjustment) (No need to adjust normally)
adjustment) (No need to adjust normally)
67-36
10F
(2)
Printer high density image density reproduction setting
(Supporting the high density section tone gap)
(No need to adjust normally)
(Supporting the high density section tone gap)
(No need to adjust normally)
67-34
10F
(3)
Printer gamma adjustment for each dither
(Automatic adjustment) (No need to adjust normally)
(Automatic adjustment) (No need to adjust normally)
67-54
10F
(4)
Automatic color balance adjustment by the user
(Printer color balance automatic adjustment ENABLE
setting and adjustment)
(Normally unnecessary to the setting change)
(Printer color balance automatic adjustment ENABLE
setting and adjustment)
(Normally unnecessary to the setting change)
26-53
ADJ 11
Manual paper feed tray paper size (width) sensor adjustment
40-2
ADJ 12
DSPF/RSPF tray paper size (width) sensor adjustment
53-6
ADJ 13
Document size detection
adjustment
adjustment
13A
Document size sensor detection point adjustment
41-1
13B
Adjust the sensitivity of the original size sensor
41-2
ADJ 14
Touch panel coordinate setting
65-1
ADJ 15
Fusing paper guide position adjustment
ADJ 16
Print image position, image
magnification ratio, void area, off-
center adjustment (Print engine)
(Manual adjustment)
magnification ratio, void area, off-
center adjustment (Print engine)
(Manual adjustment)
16A
Print image magnification ratio adjustment (main scanning direction) (Print engine)
(Manual adjustment)
(Manual adjustment)
50-10
16B
Print image print area adjustment (Print engine) (Manual adjustment)
50-10 / 50-1
16C
Print image off-center adjustment (Print engine) (Manual adjustment)
50-10
ADJ 17
Scan image magnification ratio
adjustment (Manual adjustment)
adjustment (Manual adjustment)
17A
Scan image magnification ratio adjustment (main scanning direction) (Manual adjustment)
(Document table mode)
(Document table mode)
48-1
17B
Scan image magnification ratio adjustment (sub scanning direction) (Manual adjustment)
(Document table mode)
(Document table mode)
48-1 / 48-5
17C
Scan image magnification ratio adjustment (main scanning direction) (Manual adjustment)
(DSPF/RSPF mode)
(DSPF/RSPF mode)
48-1
17D
Scan image magnification ratio adjustment (sub scanning direction) (Manual adjustment)
(DSPF/RSPF mode)
(DSPF/RSPF mode)
48-1
ADJ 18
Scan image off-center
adjustment (Manual adjustment)
adjustment (Manual adjustment)
18A
Scan image off-center adjustment (Manual adjustment) (Document table mode)
50-12
18B
Scan image off-center adjustment (Manual adjustment) (DSPF/RSPF mode)
50-12 / 50-6
ADJ 19
Copy image position and image
loss adjustment
(Manual adjustment)
loss adjustment
(Manual adjustment)
19A
Copy image position, image loss, and void area adjustment (Manual adjustment)
(Document table mode)
(Document table mode)
50-1
19B
Image scanning position adjustment (Manual adjustment) (DSPF/RSPF mode)
53-8
19C
Copy image position, image loss, void area adjustment (Manual adjustment)
(DSPF/RSPF mode)
(DSPF/RSPF mode)
50-6
ADJ 20
Finisher and punch unit adjustments (alignment, punch hole position, staple position)
3-10
Job No
Adjustment item list
Simulation
MX-5111N ADJUSTMENTS AND SETTINGS 4 – 3
3. Details of adjustment
ADJ 1
Adjust the developing unit
1-A
Adjust the developing doctor gap
This adjustment must be performed in the following cases:
* The developing unit has been disassembled.
* When the print image density is low.
* When there is a blur on the print image.
* When there is unevenness in the print image density.
* The toner is excessively dispersed.
1)
* The developing unit has been disassembled.
* When the print image density is low.
* When there is a blur on the print image.
* When there is unevenness in the print image density.
* The toner is excessively dispersed.
1)
Remove the developing unit from the main unit, and remove
the developing unit upper cover and the developing doctor
cover.
the developing unit upper cover and the developing doctor
cover.
2)
Loosen the developing doctor fixing screw.
3)
Insert a thickness gauge of 0.60mm in between 40mm - 70mm
from the edge of the developing doctor.
from the edge of the developing doctor.
4)
Push the developing doctor in the arrow direction, and tighten
the fixing screw of the developing doctor. (Perform the similar
procedure for the front frame and the rear frame.)
the fixing screw of the developing doctor. (Perform the similar
procedure for the front frame and the rear frame.)
5)
Check that the doctor gaps at two positions in 40mm - 70mm
from the both sides of the developing doctor are in the range of
0.625
from the both sides of the developing doctor are in the range of
0.625
0.05mm.
* When inserting a thickness gauge, be careful not to scratch the
developing doctor and the developing roller.
70mm
70mm
40mm
40mm
70mm
70mm
40mm
40mm
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