Sharp MX-4110N / MX-4111N / MX-4112N / MX-4110FN / MX-4111FN / MX-5110N / MX-5111N / MX-5112N / MX-5110FN / MX-5111FN (serv.man11) Service Manual ▷ View online
MX-5111N ADJUSTMENTS AND SETTINGS 4 – 4
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
• 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.
1-B
Adjust the developing roller main pole
position
position
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 doctor cover, and place the develop-
ing unit on a flat surface.
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.)
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.)
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
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.
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.
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.
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.
main pole position, fix the developing roller main pole adjust-
ment plate with the fixing screw.
A
2
㨪3mm
A
37.8+ 0.5mm
37.8 + 0.5mm
MX-5111N ADJUSTMENTS AND SETTINGS 4 – 5
1-C
Toner density control reference value
setting
setting
This adjustment must be performed in the following cases:
* When developer is replaced.
* 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.
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.
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.
NOTE:
1)
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.
of Yellow, Magenta, and Cyan.
If only one color is replaced, color balance may be adversely
affected. Black developer can be replaced individually.
2)
When not replacing the developer, do not execute SIM25-2.
NOTE: During execution of this adjustment, do not insert the toner
cartridge.
EXECUTE
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K
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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.
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.
Control voltage: 2.0V or below.
EE-EC
EC abnormality
Sensor output level: other than 2.5V
0.2V
MX-5111N ADJUSTMENTS AND SETTINGS 4 – 6
ADJ 2
Adjusting high voltage values
2-A
Adjust the main charger grid voltage
This adjustment must be performed in the following cases:
* 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.
* 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.
Remark:
Normally when the default value is set, the specified voltage is out-
putted.
The adjustment value of each color mode is specified on the label
attached to the MC/DV high voltage power PWB. Enter that value.
Normally when the default value is set, the specified voltage is out-
putted.
The adjustment value of each color mode is specified on the label
attached to the MC/DV high voltage power PWB. Enter that value.
GBK:XXX GBC:XXX GBM:XXX GBY:XXX
When [EXECUTE] key is pressed, the voltage entered in the proce-
dure 3) is outputted for 30 sec and the set value is saved.
When [EXECUTE] key is pressed again, the output is stopped.
Note that the adjustment value may differ depending on the MC/DV
high voltage power PWB.
Since the adjustment value label is attached on the MC/DV 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.
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.
dure 3) is outputted for 30 sec and the set value is saved.
When [EXECUTE] key is pressed again, the output is stopped.
Note that the adjustment value may differ depending on the MC/DV
high voltage power PWB.
Since the adjustment value label is attached on the MC/DV 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.
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.
EXECUTE
EXECUTE
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Item/Display (Mode)
Content
Adjustment
range
Actual voltage
41cpm machine
51cpm machine
MIDDLE
A
MIDDLE SPEED GB_K
Main charger grid voltage (Middle speed mode)
K
150 - 850
–630V
–640V
B
MIDDLE SPEED GB_C
Main charger grid voltage (Middle speed mode)
C
150 - 850
–630V
–640V
C
MIDDLE SPEED GB_M
Main charger grid voltage (Middle speed mode)
M
150 - 850
–630V
–640V
D
MIDDLE SPEED GB_Y
Main charger grid voltage (Middle speed mode)
Y
150 - 850
–630V
–640V
LOW
A
LOW SPEED GB_K
Main charger grid voltage (Low speed mode)
K
150 - 850
–620V
–620V
B
LOW SPEED GB_C
Main charger grid voltage (Low speed mode)
C
150 - 850
–600V
–600V
C
LOW SPEED GB_M
Main charger grid voltage (Low speed mode)
M
150 - 850
–600V
–600V
D
LOW SPEED GB_Y
Main charger grid voltage (Low speed mode)
Y
150 - 850
–600V
–600V
MX-5111N ADJUSTMENTS AND SETTINGS 4 – 7
2-B
Adjust the developing bias voltage
This adjustment must be performed in the following cases:
* 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.
* 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 8-1 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.
Remark:
Normally when the default value is set, the specified voltage is out-
putted.
The adjustment value of each color mode is specified on the label
attached to the MC/DV high voltage power PWB. Enter that value.
Normally when the default value is set, the specified voltage is out-
putted.
The adjustment value of each color mode is specified on the label
attached to the MC/DV high voltage power PWB. Enter that value.
DVK:XXX DVC:XXX DVM:XXX DVY:XXX
When [EXECUTE] key is pressed, the voltage entered in the proce-
dure 3) is outputted for 30 sec and the set value is saved.
When [EXECUTE] key is pressed again, the output is stopped.
Note that the adjustment value may differ depending on the MC/DV
high voltage power PWB.
Since the adjustment value label is attached on the MC/DV 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.
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.
dure 3) is outputted for 30 sec and the set value is saved.
When [EXECUTE] key is pressed again, the output is stopped.
Note that the adjustment value may differ depending on the MC/DV
high voltage power PWB.
Since the adjustment value label is attached on the MC/DV 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.
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.
EXECUTE
EXECUTE
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Item/Display (Mode)
Content
Adjustment
range
Actual voltage
41cpm machine
51cpm machine
MIDDLE
A
MIDDLE SPEED DVB_K
Developing bias voltage (Middle speed mode)
K
0 - 600
–450V
–450V
B
MIDDLE SPEED DVB_C
Developing bias voltage (Middle speed mode)
C
0 - 600
–450V
–450V
C
MIDDLE SPEED DVB_M
Developing bias voltage (Middle speed mode)
M
0 - 600
–450V
–450V
D
MIDDLE SPEED DVB_Y
Developing bias voltage (Middle speed mode)
Y
0 - 600
–450V
–450V
LOW
A
LOW SPEED DVB_K
Developing bias voltage (Low speed mode)
K
0 - 600
–450V
–450V
B
LOW SPEED DVB_C
Developing bias voltage (Low speed mode)
C
0 - 600
–430V
–430V
C
LOW SPEED DVB_M
Developing bias voltage (Low speed mode)
M
0 - 600
–430V
–430V
D
LOW SPEED DVB_Y
Developing bias voltage (Low speed mode)
Y
0 - 600
–430V
–430V
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