MX-4100N, MX-4101N, MX-5000N, MX-5001N (serv.man13). Service Manual-Section 5-Adjustments — Sharp Copying Equipment Service Manual (repair manual)

Model
MX-4100N MX-4101N MX-5000N MX-5001N (serv.man13)
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105
Size
7.25 MB
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Document
Service Manual
Brand
Device
Copying Equipment / Service Manual-Section 5-Adjustments
File
mx-4100n-mx-4101n-mx-5000n-mx-5001n-sm13.pdf
Date

View Sharp MX-4100N / MX-4101N / MX-5000N / MX-5001N (serv.man13) Service Manual online

MX-4101N  ADJUSTMENTS  5 – 1
MX-4101N
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
Adjust the developing doctor gap
ADJ 2
Adjust the developing roller main pole
ADJ 3
Toner density control reference value setting
25-2
ADJ 4
Adjusting high voltage values
4A
Adjust the main charger grid voltage
8-2
4B
Adjust the developing bias voltage
8-1
4C
Transfer voltage adjustment
8-6
ADJ 5
Image density sensor (image registration 
sensor) adjustment
5A
Color image density sensor (image registration sensor F) calibration
44-13
5B
Color image density sensor (image registration sensor F), black image 
density sensor (image registration sensor R) adjustment
44-2
ADJ 6
Image skew adjustment (LSU unit)
61-4
ADJ 7
OPC drum phase adjustment
7A
OPC drum phase adjustment (Auto adjustment)
50-22
7B
OPC drum phase adjustment (Manual adjustment)
44-31
ADJ 8
Print engine image magnification ratio adjustment (BK) (Main scanning direction) (Print engine section) (Manual adjustment)
50-10
ADJ 9
Image off-center adjustment (Print engine section)
50-10
ADJ 10
Image registration adjustment (Print engine 
section)
10A
Image registration adjustment (Main scanning direction, sub scanning 
direction) (Auto adjustment)
50-22
10B
Image registration adjustment (Main scanning direction) (Manual 
adjustment)
50-20
10C
Image registration adjustment (Sub scanning direction) (Manual 
adjustment)
50-21
ADJ 11
Scan image distortion 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)
ADJ 12
Scan image focus adjustment (CCD unit 
position adjustment)
12A
Document table mode image focus adjustment
12B
DSPF mode image focus adjustment
ADJ 13
RSPF/DSPF parallelism adjustment
13A
RSPF height adjustment
13B
RSPF diagonal adjustment
13C
DSPF levelness adjustment
13D
DSPF skew adjustment
ADJ 14
Scan image magnification ratio adjustment 
(Document table mode)
14A
Scan image magnification ratio adjustment (Main scanning direction) 
(Document table mode)
48-1
14B
Scan image magnification ratio adjustment (Sub scanning direction) 
(Document table mode)
48-1
ADJ 15
Scan image magnification ratio adjustment 
(RSPF/DSPF mode)
15A
Scan image magnification ratio adjustment (Main scanning direction) 
(RSPF mode)
48-1
15B
Scan image magnification ratio adjustment (Sub scanning direction) 
(RSPF mode)
48-1
15C
Scan image magnification ratio adjustment (Main scanning direction) 
(DSPF mode)
48-1
15D
Scan image magnification ratio adjustment (Sub scanning direction) 
(DSPF mode)
48-1
ADJ 16
Scan image off-center adjustment
16A
Scan image off-center adjustment (Document table mode)
50-12
16B
Scan image off-center adjustment (RSPF mode)
50-12
16C
Scan image off-center adjustment (DSPF mode)
50-12
ADJ 17
Print area (Void area) adjustment (Print engine section)
50-10/50-1
ADJ 18
Copy image position, image loss adjustment
18A
Copy image position, image loss adjustment (Document table mode)
50-1 (50-2)
18B
Document scan position adjustment (RSPF mode)
53-8
18C
Document scan position adjustment (DSPF mode)
53-8
18D
Copy image position, image loss adjustment (RSPF mode)
50-6 (50-7)
18E
Copy image position, image loss adjustment (DSPF mode)
50-6 (50-7)
ADJ 19
Print lead edge image position adjustment (Printer mode) (Print engine section)
50-5
MX-4101N  ADJUSTMENTS  5 – 2
ADJ 20
Copy color balance/density adjustment
20A 
(1)
CCD gamma adjustment (CCD calibration) (Normal document copy 
mode)
63-3 (63-5)
20A 
(2)
CCD gamma adjustment (CCD calibration) (DSPF mode)
63-3 (63-5)
20A 
(3)
Shading adjustment (DSPF mode)
20B
Copy color balance adjustment (Auto adjustment)
46-24
20C
Copy color balance adjustment (Manual adjustment)
46-21
20D
Copy density adjustment (Each color copy mode) (Whole adjustment) 
(Normally unnecessary to adjust)
46-1
20E
Copy density adjustment (Each monochrome copy mode) (Whole 
adjustment) (Normally unnecessary to adjust)
46-2
20F
Copy color balance adjustment (Color balance adjustment at each density 
level in each color copy mode) (Normally not required)
46-10
20G
Monochrome copy density/gamma adjustment (Each monochrome copy 
mode) (Normally not required)
46-16
20H
Condition setting of document density reading operation (exposure) in the 
monochrome auto copy mode (Normally not required)
46-19
20I
Document background density reproducibility adjustment in the 
monochrome auto copy mode (Normally unnecessary to adjust)
46-32
20J
Copy density adjustment for low density section (Each copy mode) 
(Normally unnecessary to adjust)
46-63
20K
Color copy text, line image edge gamma, density adjustment/Text
⋅Map 
mode gamma, density adjustment
46-27
20L
Color document reproducibility adjustment in the monochrome copy mode 
(Normally unnecessary to adjust)
46-37
20M
Black ingredient amount adjustment in color copy mode (Normally 
unnecessary to adjust)
46-38
20N
Sharpness adjustment in the color auto copy mode (Normally 
unnecessary to adjust)
46-60
20O
Copy high density part density correction setting (Prevents against tone 
gap) (Normally unnecessary to adjust)
46-23
20P
Copy color balance adjustment (single color copy mode) (Normally not 
required)
46-25
20Q
Copy density adjustment in the RSPF mode (Normally unnecessary to 
adjust)
46-9
20R
DSPF mode copy density adjustment (Normally not necessary to adjust)
20S
Auto color balance adjustment by the user (Copy color balance auto 
adjustment ENABLE setting and adjustment)
26-53
20T
Copy color balance adjustment (Automatic adjustment for each dither)
46-54
ADJ 21
Printer color balance/density adjustment
21A
Printer color balance adjustment (Auto adjustment)
67-24
21B
Printer color balance adjustment (Manual adjustment)
67-25
21C
Printer density adjustment (low density part density adjustment) (Normally 
unnecessary to adjust)
67-36
21D
Printer high density part desnsity correction setting (high density part tone 
gap countermeasure) (Normally unnecessary to the setting change)
67-34
21E
Auto color balance adjustment by the user (Printer color balance auto 
adjustment ENABLE setting and adjustment)
26-54
21F
Copy/Printer color balance and density adjustment (Automatic 
adjustment)
46-74
21G
Printer color balance adjustment (Automatic adjustment for each dither)
67-54
ADJ 22
Fusing paper guide position adjustment
ADJ 23
Document size sensor adjustment
23A
Document size sensor detection point adjustment
41-2
23B
Adjust the sensitivity of the original size sensor
41-2
ADJ 24
Manual paper feed tray paper size (width) sensor adjustment
40-2
ADJ 25
RSPF/DSPF tray paper size (width) sensor 
adjustment
25A
RSPF tray paper size (width) sensor adjustment
53-6
25B
DSPF tray paper size (width) sensor adjustment
53-6
ADJ 26
Touch panel coordinate setting
65-1
ADJ 27
Image loss, void area, image off-center, 
image magnification ratio auto adjustment 
with SIM50-28
27A
Print image main scanning direction image magnification ratio automatic 
adjustment
50-28
27B
Image off-center automatic adjustment
50-28
27C
Copy lead edge image reference position adjustment, image off-center, 
sub scanning direction image magnification ratio automatic adjustment
50-28
27D
RSPF mode image off-center, image lead edge position, sub scanning 
direction image magnification ratio automatic adjustment
50-28
27E
DSPF mode image off-center, image lead edge position, sub scanning 
direction image magnification ratio auto adjustment
50-28
Job No
Adjustment item list
Simulation
MX-4101N  ADJUSTMENTS  5 – 3
3. Details of adjustment
 
ADJ 1
Adjust the developing doctor 
gap
This adjustment is needed in the following situations:
* 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.
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.
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.)
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
0.60 
± 0.05mm.
* When inserting a thickness gauge, be careful not to scratch the
developing doctor and the developing roller.
Note for use of a thickness gauge
• Do not insert the gauge diagonally.
• The gauge must pass freely.
• The advisable point of measurement is the MIN point of the MG
roller oscillation.
* Marked point (A) on the follower side (right side) of the MG roller.
70mm
40mm
70mm
40mm
70mm
40mm
70mm
40mm
A
MX-4101N  ADJUSTMENTS  5 – 4
 
ADJ 2
Adjust the developing roller 
main pole
This adjustment is needed in the following situations:
* 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 doctor cover, and place the develop-
ing unit on a flat surface.
2)
Attach a piece of string to a sewing needle or pin.
3)
Hold the thread and bring the needle near the developing
roller. (Do not use a paper clip because too heavy. It will not
provide a correct position.)
4)
Mark the developing roller surface on the extension line of the
needle with the needle at 2 - 3mm from the developing roller
surface. (Never touch the needle tip with the developing roller.)
5)
Measure the distance between the marking position and posi-
tion A of the developing unit frame, and check that it is 37.8 
±
0.5mm.
If the distance is not within the above range, adjust the devel-
oping roller main pole position in the following procedures.
6)
Remove the developing unit front cover, loosen the fixing
screw of the developing roller main pole adjustment plate, and
move the adjustment plate in the arrow direction to adjust.
Repeat procedures 3) - 6) until the developing roller main pole
position comes to the specified range.
7)
After completion of the adjustment of the developing roller
main pole position, fix the developing roller main pole adjust-
ment plate with the fixing screw.
 
ADJ 3
Toner density control reference 
value setting
This adjustment is needed in the following situations:
* When developer is replaced.
NOTE: Be sure to execute this adjustment only when developer is
replaced. Never execute it in the other cases.
1)
With the front cabinet open, enter SIM25-2.
2)
Close the front cabinet.
3)
Select a developing unit to be adjusted.
2
3mm
A
37.8+ 0.5mm
37.8 + 0.5mm
EXECUTE
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MX-4101N  ADJUSTMENTS  5 – 5
4)
When [EXECUTE] key is pressed, it is highlighted. The devel-
oping roller rotates, and the toner density sensor detects toner
density, and the output value is displayed.
The above operation is executed for 3 minutes, and the aver-
age value of the toner density sensor detection level is set
(saved) as the reference toner density control value.
When the reference toner density control adjustment operation
is completed, [EXECUTE] key returns to normal from highlight.
This makes known about whether the adjustment operation is
completed or not.
The above operation is executed each of the lower speed
mode and the middle speed mode, and the reference toner
density control value is set for each of them.
NOTE:
If the operation is interrupted within 3 minutes, the adjustment
result is not reflected.
When [EXECUTE] key is pressed during rotation, the opera-
tion is stopped and [EXECUTE] key returns to the normal dis-
play.
If [EE-EU], [EE-EL], or [EE-EG] is displayed, setting of the ref-
erence toner density control value is not completed normally.
5)
Use SIM24-5 to clear the developer counter.
6)
Use SIM44-27 to clear the half-tone correction data.
NOTE:
1)
When replacing developer, always replace all the three colors
of Yellow, Magenta, and Cyan. 
If only one color is replaced, color balance may be adversely
affected. Black developer can be replaced individually.
2)
After replacement of developer or the photoconductor, be sure
to execute SIM44-27 to clear the half-tone correction data.
If the above procedure is neglected, the half-tone correction
may not be performed correctly.
3)
When not replacing the developer, do not execute SIM25-2.
 
ADJ 4
Adjusting high voltage values
 
4-A
Adjust the main charger grid voltage
This adjustment is needed in the following situations:
* When the MC/DV high voltage power PWB is replaced.
* U2 trouble has occurred.
* The PCU PWB has been replaced.
* The EEPROM of the PCU PWB has been replaced.
1)
Enter the SIM 8-2 mode.
2)
Select an output mode to be adjusted with the mode key and
the scroll key.
3)
Enter the adjustment value (specified value) of the middle
speed mode and press [OK] key.
Error 
display
Error name
Detail of error
EE-EL
EL abnormality
Sensor output level: 1.5V or below. If not, 
Control voltage: 8.0V or above.
EE-EU
EU abnormality
Sensor output level: 3.45V or above. If not, 
Control voltage: 2.0V or below.
EE-EC
EC abnormality
Sensor output level: other than 2.5V 
± 0.2V
EXECUTE
EXECUTE
or after 30 sec.
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Item
Mode
Adjustment 
range
Monitor (MC/DV high voltage 
PWB)
Actual voltage
Monitor voltage 
(Specified value)
Check 
pin
MIDDLE
A
MIDDLE SPEED GB_K
K
Main charger grid voltage 
(Middle speed mode)
150 - 850
18.2 
± 1.1V
GB-K
-640V
B
MIDDLE SPEED GB_C
C
Main charger grid voltage 
(Middle speed mode)
150 - 850
GB-C
C
MIDDLE SPEED GB_M
M
Main charger grid voltage 
(Middle speed mode)
150 - 850
GB-M
D
MIDDLE SPEED GB_Y
Y
Main charger grid voltage 
(Middle speed mode)
150 - 850
GB-Y
LOW
A
LOW SPEED GB_K
K
Main charger grid voltage 
(Low speed mode)
150 - 850
17.7 
± 1.1V
GB-K
-620V
B
LOW SPEED GB_C
C
Main charger grid voltage 
(Low speed mode)
150 - 850
GB-C
C
LOW SPEED GB_M
M
Main charger grid voltage 
(Low speed mode)
150 - 850
GB-M
D
LOW SPEED GB_Y
Y
Main charger grid voltage 
(Low speed mode)
150 - 850
GB-Y

Download Sharp MX-4100N / MX-4101N / MX-5000N / MX-5001N (serv.man13) Service Manual (Repair Manual)

Here you can view online or download Sharp MX-4100N / MX-4101N / MX-5000N / MX-5001N (serv.man13) Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sharp MX-4100N / MX-4101N / MX-5000N / MX-5001N (serv.man13) Copying Equipment. Information contained in Sharp MX-4100N / MX-4101N / MX-5000N / MX-5001N (serv.man13) service manual (repair manual) typically includes:

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  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).