Sharp MX-C380P / MX-C400P / MX-B380P / MX-B382P / MX-B400P (serv.man6) Service Manual ▷ View online
MX-C400P/C380P, MX-B400P/B380P/B382P EXTERNAL VIEW AND INTERNAL STRUCTURE 3 – 26
14. Rollers
No.
Name
Function/Operation
1
Paper exit roller (Drive)
Discharges the paper. / Transports the paper to the switchback section.
2
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.
3
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.
4
Transport roller 4 (Drive)
Transports the paper switched back by the paper exit roller to the transport roller 5.
5
Transport roller 3 (Drive)
Transports the paper from the fusing roller to the paper exit roller.
6
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.
7
Fusing roller (Heating)
Heats and presses toner on the paper to fuse on the paper.
8
Fusing roller (Pressing)
Applies a pressure to the fusing roller (heating).
9
Transport roller 5 (Drive)
Transports the paper from the transport roller 4 to the transport roller 2.
10
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.
11
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.
12
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.
13
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.
14
Paper feed roller (Manual paper feed tray)
Transports paper to the transport roller 2.
15
Transport roller 2 (Drive)
Transports the paper transported from the transport roller 1 to the resist roller.
16
Transport roller 1 (Drive)
Transports paper which was fed from the paper feed tray 1 to the transport roller 2.
17
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.
18
Paper feed roller (No. 1 paper feed tray)
Transport paper to the paper transport section.
19
Separation roller (No. 1 paper feed tray)
Separates paper to prevent against double feed.
20
Paper pickup roller (No. 1 paper feed tray)
Transports paper to the paper feed roller.
1
8
6
3
10
11
11
14
13
15
19
18
20
7
5
4
2
1
9
12
16
17
17
8
7
MX-B382P
: ’11/Mar/15
1
MX-C400P/C380P, MX-B400P/B380P/B382P ADJUSTMENTS 4 – 1
MX-C400P
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.
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
(*1): Color model only
(*2): Monochrome model only
(*2): Monochrome model only
Job No
Adjustment item list
Simulation
ADJ 1
Adjusting high voltage values (*1)
(MX-C400P/C380P)
(MX-C400P/C380P)
1A
Adjust the main charger grid voltage (MX-C400P/C380P)
8-2
1B
Adjust the developing bias voltage (MX-C400P/C380P)
8-1
1C
Transfer voltage adjustment (MX-C400P/C380P)
8-6
ADJ 1
Adjusting high voltage values (*2)
(MX-B400P/B380P/B382P)
(MX-B400P/B380P/B382P)
1A
Adjust the main charger grid voltage (MX-B400P/B380P/B382P)
8-2
1B
Adjust the developing bias voltage (MX-B400P/B380P/B382P)
8-1
1C
Transfer voltage adjustment (MX-B400P/B380P/B382P)
8-6
ADJ 2
Image density sensor (image
registration sensor) adjustment
registration sensor) adjustment
2A
Color image density sensor (image registration sensor F) calibration (*1)
(MX-C400P/C380P)
(MX-C400P/C380P)
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) (*1) (MX-C400P/C380P)
61-4
ADJ 3
Image skew adjustment (LSU unit) (*2) (MX-B400P/B380P/B382P)
64-2
ADJ 4
OPC drum phase adjustment (*1)
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) (*1)
(MX-C400P/C380P)
(Print engine section) (*1)
(MX-C400P/C380P)
7A
Image registration adjustment (Main scanning direction, sub scanning direction)
(Auto adjustment) (MX-C400P/C380P)
(Auto adjustment) (MX-C400P/C380P)
50-22
7B
Image registration adjustment (Main scanning direction) (Manual adjustment)
(MX-C400P/C380P)
(MX-C400P/C380P)
50-20
7C
Image registration adjustment (Sub scanning direction) (Manual adjustment)
(MX-C400P/C380P)
(MX-C400P/C380P)
50-20
ADJ 8
Print area (Void area) adjustment (Print engine section)
50-10/50-1
ADJ 9
Print lead edge image position adjustment (Printer mode) (Print engine section)
50-5
ADJ 10
Printer color balance/density
adjustment (*1)
(MX-C400P/C380P)
adjustment (*1)
(MX-C400P/C380P)
10A
Manual color balance adjustment - 1 (MX-C400P/C380P)
67-22
10B
Manual color balance adjustment - 2 (MX-C400P/C380P)
67-25
10C
Simple color balance adjustment (Gray balance adjustment) (MX-C400P/C380P)
67-21
10D
Printer density adjustment (low density part density adjustment)
(Normally unnecessary to adjust) (MX-C400P/C380P)
(Normally unnecessary to adjust) (MX-C400P/C380P)
67-36
10E
Printer high density part density correction setting (high density part tone gap
countermeasure) (Normally unnecessary to the setting change) (MX-C400P/C380P)
countermeasure) (Normally unnecessary to the setting change) (MX-C400P/C380P)
67-34
ADJ 10
Printer density and gradation
adjustment (*2)
(MX-B400P/B380P/B382P)
adjustment (*2)
(MX-B400P/B380P/B382P)
10A
Manual density and gradation adjustment - 1 (MX-B400P/B380P/B382P)
67-22
10B
Manual density and gradation adjustment - 2 (MX-B400P/B380P/B382P)
67-25
10C
Printer density adjustment (low density part density adjustment)
(Normally unnecessary to adjust) (MX-B400P/B380P/B382P)
(Normally unnecessary to adjust) (MX-B400P/B380P/B382P)
67-36
10D
Printer high density part density correction setting (high density part tone gap
countermeasure) (Normally unnecessary to the setting change) (MX-B400P/B380P/B382P)
countermeasure) (Normally unnecessary to the setting change) (MX-B400P/B380P/B382P)
67-34
ADJ 11
Manual paper feed tray paper size (width) sensor adjustment
40-2
ADJ 12
Fusing paper guide position adjustment
1
1
1
1
1
: ’11/Mar/15
1
MX-C400P/C380P, MX-B400P/B380P/B382P ADJUSTMENTS 4 – 2
3. Details of adjustment
ADJ 1
Adjusting high voltage values
(MX-C400P/C380P)
(MX-C400P/C380P)
1-A
Adjust the main charger grid voltage
(MX-C400P/C380P)
(MX-C400P/C380P)
This adjustment is needed in the following situations:
* When the MC 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.
* When the MC 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 and an item to be adjusted.
3) Set the adjustment value (specified value) of the middle speed
3) Set the adjustment value (specified value) of the middle speed
mode. (Enter the set value, and press [OK] key and OSA
shortcut key.)
When [EXECUTE] button is selected and [OK] key is pressed,
the voltage corresponding to the value entered in procedure 3)
is outputted for 30 sec and the set value is fixed.
With [EXECUTE] button selected, press [OK] key again, and
the simulation is terminated.
Enter the adjustment value of each mode which is specified on
the label attached on the MC high voltage power PWB.
shortcut key.)
When [EXECUTE] button is selected and [OK] key is pressed,
the voltage corresponding to the value entered in procedure 3)
is outputted for 30 sec and the set value is fixed.
With [EXECUTE] button selected, press [OK] key again, and
the simulation is terminated.
Enter the adjustment value of each mode which is specified on
the label attached on the MC high voltage power PWB.
NOTE: Normally when an adjustment value is set, there is no need
to press [EXECUTE] button. If [EXECUTE] button should
be pressed, a high voltage would be outputted with the
OPC drum stopped, affecting an adverse effect on the
OPC drum. Be careful of that.
be pressed, a high voltage would be outputted with the
OPC drum stopped, affecting an adverse effect on the
OPC drum. Be careful of that.
NOTE: Note that the adjustment value may differ depending on the
MC high voltage power PWB.
Since the adjustment value label is attached on the MC
high voltage PWB, the PWB must be removed in order to
check the adjustment value.
This is a troublesome procedure. Therefore, it is advisable
to put down the adjustment value in advance.
Since the adjustment value label is attached on the MC
high voltage PWB, the PWB must be removed in order to
check the adjustment value.
This is a troublesome procedure. Therefore, it is advisable
to put down the adjustment value in advance.
When the adjustment value (specified value) of the middle speed
mode is set, the adjustment values of the other modes are auto-
matically set according to the middle speed mode setting in a cer-
tain relationship.
mode is set, the adjustment values of the other modes are auto-
matically set according to the middle speed mode setting in a cer-
tain relationship.
NOTE: Since the high voltage output cannot be checked with a
digital multi meter in this model, a judgment of the output
must be made by checking the print image quality.
must be made by checking the print image quality.
1-B
Adjust the developing bias voltage
(MX-C400P/C380P)
(MX-C400P/C380P)
This adjustment is needed in the following situations:
* When the MC 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)
* When the MC 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)
Go through the modes specified in Simulation 8-1.
2)
Select an output mode and an item to be adjusted.
3)
Set the adjustment value (specified value) of the middle speed
mode. (Enter the set value, and press [OK] key and OSA
shortcut key.)
When [EXECUTE] button is selected and [OK] key is pressed,
the voltage corresponding to the value entered in procedure 3)
is outputted for 30 sec and the set value is fixed.
With [EXECUTE] button selected, press [OK] key again, and
the simulation is terminated.
Enter the adjustment value of each mode which is specified on
the label attached on the MC high voltage power PWB.
mode. (Enter the set value, and press [OK] key and OSA
shortcut key.)
When [EXECUTE] button is selected and [OK] key is pressed,
the voltage corresponding to the value entered in procedure 3)
is outputted for 30 sec and the set value is fixed.
With [EXECUTE] button selected, press [OK] key again, and
the simulation is terminated.
Enter the adjustment value of each mode which is specified on
the label attached on the MC high voltage power PWB.
NOTE: Normally when an adjustment value is set, there is no need
to press [EXECUTE] button. If [EXECUTE] button should
be pressed, a high voltage would be outputted with the
OPC drum stopped, affecting an adverse effect on the
OPC drum. Be careful of that.
be pressed, a high voltage would be outputted with the
OPC drum stopped, affecting an adverse effect on the
OPC drum. Be careful of that.
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Mode
Item/Display
Content
Setting range
MIDDLE
A
MIDDLE
SPEED GB_K
SPEED GB_K
K charging/grid bias set
value at middle speed
value at middle speed
150 - 850
B
MIDDLE
SPEED GB_C
SPEED GB_C
C charging/grid bias set
value at middle speed
value at middle speed
150 - 850
C
MIDDLE
SPEED GB_M
SPEED GB_M
M charging/grid bias set
value at middle speed
value at middle speed
150 - 850
D
MIDDLE
SPEED GB_Y
SPEED GB_Y
Y charging/grid bias set
value at middle speed
value at middle speed
150 - 850
LOW
A
LOW SPEED
GB_K
GB_K
K charging/grid bias set
value at low speed
value at low speed
150 - 850
B
LOW SPEED
GB_C
GB_C
C charging/grid bias set
value at low speed
value at low speed
150 - 850
C
LOW SPEED
GB_M
GB_M
M charging/grid bias set
value at low speed
value at low speed
150 - 850
D
LOW SPEED
GB_Y
GB_Y
Y charging/grid bias set
value at low speed
value at low speed
150 - 850
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MX-C400P/C380P, MX-B400P/B380P/B382P ADJUSTMENTS 4 – 3
NOTE: Note that the adjustment value may differ depending on the
MC high voltage power PWB.
Since the adjustment value label is attached on the MC
high voltage PWB, the PWB must be removed in order to
check the adjustment value.
This is a troublesome procedure. Therefore, it is advisable
to put down the adjustment value in advance.
Since the adjustment value label is attached on the MC
high voltage PWB, the PWB must be removed in order to
check the adjustment value.
This is a troublesome procedure. Therefore, it is advisable
to put down the adjustment value in advance.
When the adjustment value (specified value) of the middle speed
mode is set, the adjustment values of the other modes are auto-
matically set according to the middle speed mode setting in a cer-
tain relationship.
mode is set, the adjustment values of the other modes are auto-
matically set according to the middle speed mode setting in a cer-
tain relationship.
NOTE: Since the high voltage output cannot be checked with a
digital multi meter in this model, a judgment of the output
must be made by checking the print image quality.
must be made by checking the print image quality.
1-C
Transfer voltage adjustment
(MX-C400P/C380P)
(MX-C400P/C380P)
This adjustment is needed in the following situations:
* When the TC high voltage PWB is replaced.
* U2 trouble has occurred.
* The PCU PWB has been replaced.
* The EEPROM of the PCU PWB has been replaced.
1)
* When the TC high voltage PWB is replaced.
* U2 trouble has occurred.
* The PCU PWB has been replaced.
* The EEPROM of the PCU PWB has been replaced.
1)
Go through the modes specified in Simulation 8-6.
2)
Select an item to be adjusted.
3)
Set the adjustment value (specified value) of the middle speed
mode. (Enter the set value, and press [OK] key and OSA
shortcut key.)
When [EXECUTE] button is selected and [OK] key is pressed,
the voltage corresponding to the value entered in procedure 3)
is outputted for 30 sec and the set value is fixed.
With [EXECUTE] button selected, press [OK] key again, and
the simulation is terminated.
By setting the default value (specified value), the specified out-
put is provided.
mode. (Enter the set value, and press [OK] key and OSA
shortcut key.)
When [EXECUTE] button is selected and [OK] key is pressed,
the voltage corresponding to the value entered in procedure 3)
is outputted for 30 sec and the set value is fixed.
With [EXECUTE] button selected, press [OK] key again, and
the simulation is terminated.
By setting the default value (specified value), the specified out-
put is provided.
NOTE: Normally when an adjustment value is set, there is no need
to press [EXECUTE] button. If [EXECUTE] button should
be pressed, a high voltage would be outputted with the
OPC drum stopped, affecting an adverse effect on the
OPC drum and the transfer belt. Be careful of that.
be pressed, a high voltage would be outputted with the
OPC drum stopped, affecting an adverse effect on the
OPC drum and the transfer belt. Be careful of that.
Mode
Item/Display
Content
Setting
range
MIDDLE
A
MIDDLE SPEED
DVB_K
DVB_K
K developing bias set
value at middle speed
value at middle speed
0-600
B
MIDDLE SPEED
DVB_C
DVB_C
C developing bias set
value at middle speed
value at middle speed
0-600
C
MIDDLE SPEED
DVB_M
DVB_M
M developing bias set
value at middle speed
value at middle speed
0-600
D
MIDDLE SPEED
DVB_Y
DVB_Y
Y developing bias set
value at middle speed
value at middle speed
0-600
LOW
A
LOW SPEED
DVB_K
DVB_K
K developing bias set
value at low speed
value at low speed
0-600
B
LOW SPEED
DVB_C
DVB_C
C developing bias set
value at low speed
value at low speed
0-600
C
LOW SPEED
DVB_M
DVB_M
M developing bias set
value at low speed
value at low speed
0-600
D
LOW SPEED
DVB_Y
DVB_Y
Y developing bias set
value at low speed
value at low speed
0-600
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