Sharp MX-C310 / MX-C311 / MX-C312 / MX-C380 / MX-C381 / MX-C400 / MX-C401 (serv.man125) Service Manual ▷ View online
MX-C401 EXTERNAL VIEW AND INTERNAL STRUCTURE 3 – 14
14. Gates
No.
Name
Function/ Operation
1
Switchback gate
Guides paper which is switched back by the paper exit roller to the switchback section in the duplex copy mode.
2
RSPF reverse gate
Guides paper which is switched back by the paper exit roller to the transport roller 1 when duplex scanning of a
document is performed.
document is performed.
1
2
MX-C401 EXTERNAL VIEW AND INTERNAL STRUCTURE 3 – 15
15. Rollers
No.
Name
Function/ Operation
1
Transport roller 3 (Idle) (RSPF)
Applies a pressure to the document and the transport roller to give a transport power of the transport roller
to the document.
to the document.
2
Transport roller 3 (Drive) (RSPF)
Transports the document from the transport roller 2 to the paper exit roller.
Transports the document switched back by the paper exit roller to the transport roller 2 in the duplex
scanning mode.
Transports the document switched back by the paper exit roller to the transport roller 2 in the duplex
scanning mode.
3
Transport roller 4 (Idle) (RSPF)
Applies a pressure to the document and the transport roller to give a transport power of the transport roller
to the document.
to the document.
4
Transport roller 2 (Idle) (RSPF)
Applies a pressure to the document and the transport roller to give a transport power of the transport roller
to the document.
to the document.
5
Transport roller 2 (Drive) (RSPF)
Transports the document from the transport roller 1 to the transport roller 3.
6
Transport roller 1 (Drive) (RSPF)
Transports the document fed from the document tray to the transport roller 2.
7
Transport roller 1 (Idle) (RSPF)
Applies a pressure to the document and the transport roller to give a transport power of the transport roller
to the document.
to the document.
8
Paper feed roller (RSPF)
Feeds the document to the transport section.
9
Paper pickup roller (RSPF)
Transports the document to the separation roller.
10
Paper exit roller (Idle) (RSPF)
Applies a pressure to the document and the transport roller to give a transport power of the transport roller
to the document.
to the document.
11
Paper exit roller (Drive) (RSPF)
Discharges the document. Transports the document to the transport roller 2 in the duplex scanning mode.
12
Paper exit roller (Drive)
Discharges the paper. / Transports the paper to the switchback section.
13
Paper exit roller (Idle)
Applies a pressure to the paper and the paper exit roller to give a transport power of the paper exit roller to
the paper.
the paper.
14
Transport roller 4 (Idle)
Applies a pressure to the paper and the transport roller to give a transport power of the transport roller to
the paper.
the paper.
15
Transport roller 4 (Drive)
Transports the paper switched back by the paper exit roller to the transport roller 5.
16
Transport roller 3 (Drive)
Transports the paper from the fusing roller to the paper exit roller.
17
Transport roller 3 (Idle)
Applies a pressure to the paper and the transport roller to give a transport power of the transport roller to
the paper.
the paper.
18
Fusing roller (Heating)
Heats and presses toner on the paper to fuse on the paper.
19
Fusing roller (Pressing)
Applies a pressure to the fusing roller (heating).
20
Transport roller 5 (Drive)
Transports the paper from the transport roller 4 to the transport roller 2.
19
17
14
21
22
22
25
24
26
30
29
31
18
16
15
13
12
8
7
5
4
6
10 11
9
20
23
27
28
28
1
2
3
MX-C401 EXTERNAL VIEW AND INTERNAL STRUCTURE 3 – 16
21
Transport roller 5 (Idle)
Applies a pressure to the paper and the transport roller to give a transport power of the transport roller to
the paper.
the paper.
22
Resist roller (Idle)
Applies a pressure to the paper and the resist roller, giving a transport power of the resist roller to the
paper.
paper.
23
Resist roller (Drive)
Transports paper to the transfer section. / Controls the paper transport timing, and adjusts the relative
relations between images and paper.
relations between images and paper.
24
Transport roller 2 (Idle)
Applies a pressure to the paper and the transport roller to give a transport power of the transport roller to
the paper.
the paper.
25
Paper feed roller (Manual paper feed tray)
Transports paper to the transport roller 2.
26
Transport roller 2 (Drive)
Transports the paper transported from the transport roller 1 to the resist roller.
27
Transport roller 1 (Drive)
Transports paper which was fed from the paper feed tray 1 to the transport roller 2.
28
Transport roller 1 (Idle)
Applies a pressure to the paper and the transport roller to give a transport power of the transport roller to
the paper.
the paper.
29
Paper feed roller (No. 1 paper feed tray)
Transport paper to the paper transport section.
30
Separation roller (No. 1 paper feed tray)
Separates paper to prevent against double feed.
31
Paper pickup roller (No. 1 paper feed tray)
Transports paper to the paper feed roller.
No.
Name
Function/ Operation
MX-C401 ADJUSTMENTS 4 – 1
MX-C401
Service Manual
[4] 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.
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.
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.
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.
not complete normally or trouble may occur.
2. Adjustment item list
Job No
Adjustment item list
Simulation
ADJ 1
Adjusting high voltage values
1A
Adjust the main charger grid voltage
8-2
1B
Adjust the developing bias voltage
8-1
1C
Transfer voltage adjustment
8-6
ADJ 2
Image density sensor (image
registration sensor) adjustment
registration sensor) adjustment
2A
Color image density sensor (image registration sensor F) calibration
44-13/44-61
2B
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 3
Image skew adjustment (LSU unit)
61-4
ADJ 4
OPC drum phase adjustment
4A
OPC drum phase adjustment (Auto adjustment)
50-22
ADJ 5
Print engine image magnification ratio adjustment (BK) (Main scanning direction) (Print engine section) (Manual adjustment)
50-10
ADJ 6
Image off-center adjustment (Print engine section)
50-10
ADJ 7
Image registration adjustment
(Print engine section)
(Print engine section)
7A
Image registration adjustment (Main scanning direction, sub scanning direction) (Auto
adjustment)
adjustment)
50-22
7B
Image registration adjustment (Main scanning direction) (Manual adjustment)
50-20
7C
Image registration adjustment (Sub scanning direction) (Manual adjustment)
50-20
ADJ 8
Scan image magnification ratio
adjustment (Document table
mode)
adjustment (Document table
mode)
8A
Scan image magnification ratio adjustment (Main scanning direction) (Document table mode)
48-1
8B
Scan image magnification ratio adjustment (Sub scanning direction) (Document table mode)
48-1
ADJ 9
Scan image magnification ratio
adjustment (Main/sub scanning
direction) (RSPF mode)
adjustment (Main/sub scanning
direction) (RSPF mode)
9A
Scan image magnification ratio adjustment (Main scanning direction) (RSPF mode)
48-1
9B
Scan image magnification ratio adjustment (Sub scanning direction) (RSPF mode)
48-1
ADJ 10
Scan image off-center
adjustment
adjustment
10A
Scan image off-center adjustment (Document table mode)
50-12
10B
Scan image off-center adjustment (RSPF mode)
50-12
ADJ 11
Print area (Void area) adjustment (Print engine section)
50-10/50-1
ADJ 12
Copy image position, image loss
adjustment
adjustment
12A
Copy image position, image loss adjustment (Document table mode)
50-1 (50-2)
12B
Adjust the original scan start position (Adjust the scanner read position in RSPF-mode front
face scan)
face scan)
53-8
12C
Copy image position, image loss adjustment (RSPF mode)
50-6 (50-7)
ADJ 13
Print lead edge image position adjustment (Printer mode) (Print engine section)
50-5
ADJ 14
Copy color balance/density
adjustment
adjustment
14A
CCD gamma adjustment (CCD calibration) (Normal document copy mode)
63-3 (63-5)
14B
Copy color balance adjustment (Auto adjustment)
46-24
14C
Copy color balance adjustment (Manual adjustment)
46-21
14D
Copy density adjustment (Each color copy mode) (Whole adjustment) (Normally
unnecessary to adjust)
unnecessary to adjust)
46-1
14E
Copy density adjustment (Each monochrome copy mode) (Whole adjustment) (Normally
unnecessary to adjust)
unnecessary to adjust)
46-2
14F
Copy color balance adjustment (Color balance adjustment at each density level in each color
copy mode) (Normally not required)
copy mode) (Normally not required)
46-10
14G
Monochrome copy density/gamma adjustment (Each monochrome copy mode) (Normally
not required)
not required)
46-16
14H
Condition setting of document density reading operation (exposure) in the monochrome auto
copy mode (Normally not required)
copy mode (Normally not required)
46-19
14I
Document background density reproducibility adjustment in the monochrome auto copy
mode (Normally unnecessary to adjust)
mode (Normally unnecessary to adjust)
46-32
14J
Copy density adjustment for low density section (Each copy mode) (Normally unnecessary to
adjust)
adjust)
46-63
14K
Color copy text, line image edge gamma, density adjustment/Text
Map mode gamma,
density adjustment
46-27
14L
Color document reproducibility adjustment in the monochrome copy mode (Normally
unnecessary to adjust)
unnecessary to adjust)
46-37
14M
Black ingredient amount adjustment in color copy mode (Normally unnecessary to adjust)
46-38
14N
Sharpness adjustment in the monochrome auto copy mode (Normally unnecessary to adjust)
46-60
14O
Copy high density part density correction setting (Prevents against tone gap) (Normally
unnecessary to adjust)
unnecessary to adjust)
46-23
14P
Copy color balance adjustment (Single color copy mode) (Normally not required)
46-25
14Q
Copy density adjustment in the RSPF mode (Normally unnecessary to adjust)
46-9
14R
Auto color balance adjustment by the user (Copy color balance auto adjustment enable
setting and adjustment)
setting and adjustment)
26-53
14S
Copy color balance adjustment (Automatic adjustment for each dither)
(Normally unnecessary to adjust)
(Normally unnecessary to adjust)
46-54
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