Sharp MX-4100N / MX-4101N / MX-5000N / MX-5001N (serv.man13) Service Manual ▷ View online
MX-4101N ADJUSTMENTS 5 – 6
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 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.
To adjust all the modes individually, first adjust the middle speed
mode, and then adjust the other mode.
If the middle speed mode is adjusted after adjustment of all the
modes individually, the adjustment values of the other modes are
automatically changed. Use care for that.
Therefore, unless there may be an abnormality in the output volt-
age, there is no need to check the output value.
If it must be checked that the normal voltage is outputted or if an
adjustment is required by referring to the output voltage, follow the
procedures below.
1)
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.
To adjust all the modes individually, first adjust the middle speed
mode, and then adjust the other mode.
If the middle speed mode is adjusted after adjustment of all the
modes individually, the adjustment values of the other modes are
automatically changed. Use care for that.
Therefore, unless there may be an abnormality in the output volt-
age, there is no need to check the output value.
If it must be checked that the normal voltage is outputted or if an
adjustment is required by referring to the output voltage, follow the
procedures below.
1)
Remove the rear cover of the machine.
2)
Open the PWB holder.
3)
Enter the SIM 8-2 mode.
4)
Select an output mode to be adjusted with the mode key and
the scroll key.
the scroll key.
5)
Check the relationship between the check pin on the MC/DV
high voltage PWB and each adjustment mode.
high voltage PWB and each adjustment mode.
6)
Apply a digital multi-meter to between the check pin and GND
on the MC/DV high voltage PWB corresponding to the
adjusted mode.
on the MC/DV high voltage PWB corresponding to the
adjusted mode.
7)
Press [EXECUTE] key.
The main charger grid voltage is outputted for 30sec.
If this procedure is executed for a long time, the OPC drum
and the developing roller may be adversely affected. Use this
procedure as short as possible.
If possible, it is recommendable to use an unnecessary devel-
oping unit and an unnecessary OPC drum for this adjustment.
The main charger grid voltage is outputted for 30sec.
If this procedure is executed for a long time, the OPC drum
and the developing roller may be adversely affected. Use this
procedure as short as possible.
If possible, it is recommendable to use an unnecessary devel-
oping unit and an unnecessary OPC drum for this adjustment.
8)
Check the monitor voltage with the digital multi-meter.
If the monitor voltage is not in the range of the specified values
shown in the table above, change the adjustment value and
adjust. If the specified value voltage is not obtained even
though the adjustment value is changed, the following parts
may be defective.
• MC/DV high voltage PWB
• PCU PWB
• Development unit
• OPC drum unit
• High voltage circuit electrode
If the monitor voltage is not in the range of the specified values
shown in the table above, change the adjustment value and
adjust. If the specified value voltage is not obtained even
though the adjustment value is changed, the following parts
may be defective.
• MC/DV high voltage PWB
• PCU PWB
• Development unit
• OPC drum unit
• High voltage circuit electrode
1
2
MX-4101N ADJUSTMENTS 5 – 7
4-B
Adjust the developing bias 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.
* 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)
Go through the modes specified in Simulation 8-1.
2)
Select an output mode to be adjusted with the mode key and
the scroll key.
the scroll key.
3)
Enter the adjustment value (specified value) of the middle
speed mode and press [OK] key.
speed mode and press [OK] key.
EXECUTE
EXECUTE
㩷
ǂǂǂ6,08/$7,21ǂǂ12
&/26(
7(67
'96(77,1*$1'287387
$˖
˷̚˹
˖0,''/(ǂ63(('ǂ'9%B.
$˖
˖0,''/(ǂ63(('ǂ'9%B&
%˖
˖0,''/(ǂ63(('ǂ'9%B0
&˖
˖0,''/(ǂ63(('ǂ'9%B<
'˖
2.
(;(&87(
/2:
0,''/(
ǂǂǂ6,08/$7,21ǂǂ12
&/26(
7(67
'96(77,1*$1'287387
$˖
˷̚˹
˖0,''/(ǂ63(('ǂ'9%B.
$˖
˖0,''/(ǂ63(('ǂ'9%B&
%˖
˖0,''/(ǂ63(('ǂ'9%B0
&˖
˖0,''/(ǂ63(('ǂ'9%B<
'˖
2.
(;(&87(
/2:
0,''/(
10-key
or after 30 sec.
Item
Mode
Adjustment
range
Monitor (MC/DV high
voltage PWB)
Actual
voltage
Monitor voltage
(Specified value)
Check
pin
MIDDLE
A
MIDDLE SPEED DVB_K
K
Developing bias voltage (Middle speed mode)
0-600
19.2
± 1.2V
BS-K
-450V
B
MIDDLE SPEED DVB_C
C
Developing bias voltage (Middle speed mode)
0-600
19.2
± 1.2V
BS-C
-450V
C
MIDDLE SPEED
DVB_M
DVB_M
M
Developing bias voltage (Middle speed mode)
0-600
19.2
± 1.2V
BS-M
-450V
D
MIDDLE SPEED DVB_Y
Y
Developing bias voltage (Middle speed mode)
0-600
19.2
± 1.2V
BS-Y
-450V
LOW
A
LOW SPEED DVB_K
K
Developing bias voltage (Low speed mode)
0-600
19.2
± 1.2V
BS-K
-450V
B
LOW SPEED DVB_C
C
Developing bias voltage (Low speed mode)
0-600
19.2
± 1.2V
BS-C
-450V
C
LOW SPEED DVB_M
M
Developing bias voltage (Low speed mode)
0-600
19.2
± 1.2V
BS-M
-450V
D
LOW SPEED DVB_Y
Y
Developing bias voltage (Low speed mode)
0-600
19.2
± 1.2V
BS-Y
-450V
MX-4101N ADJUSTMENTS 5 – 8
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 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.
To adjust all the modes individually, first adjust the middle speed
mode, and then adjust the other mode.
If the middle speed mode is adjusted after adjustment of all the
modes individually, the adjustment values of the other modes are
automatically changed. Use care for that.
Therefore, unless there may be an abnormality in the output volt-
age, there is no need to check the output value.
If it must be checked that the normal voltage is outputted or if an
adjustment is required by referring to the output voltage, follow the
procedures below.
1)
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.
To adjust all the modes individually, first adjust the middle speed
mode, and then adjust the other mode.
If the middle speed mode is adjusted after adjustment of all the
modes individually, the adjustment values of the other modes are
automatically changed. Use care for that.
Therefore, unless there may be an abnormality in the output volt-
age, there is no need to check the output value.
If it must be checked that the normal voltage is outputted or if an
adjustment is required by referring to the output voltage, follow the
procedures below.
1)
Remove the rear cover of the machine.
2)
Open the PWB frame.
3)
Go through the modes specified in Simulation 8-1.
4)
Select an output mode to be adjusted with the mode key and
the scroll key.
the scroll key.
5)
Check the relationship between the check pin on the MC/DV
high voltage PWB and each adjustment mode.
high voltage PWB and each adjustment mode.
6)
Apply a digital multi-meter to between the check pin and GND
on the MC/DV high voltage PWB corresponding to the
adjusted mode.
on the MC/DV high voltage PWB corresponding to the
adjusted mode.
7)
Press [EXECUTE] key.
The main charger voltage is outputted for 30sec.
The main charger voltage is outputted for 30sec.
8)
Check the monitor voltage with the digital multi-meter.
If the monitor voltage is not in the range of the specified values
shown in the table above, change the adjustment value and
adjust. If the specified value voltage is not obtained even
though the adjustment value is changed, the following parts
may be defective.
• MC/DV high voltage PWB
• PCU PWB
• Development unit
• OPC drum unit
• High voltage circuit electrode
If the monitor voltage is not in the range of the specified values
shown in the table above, change the adjustment value and
adjust. If the specified value voltage is not obtained even
though the adjustment value is changed, the following parts
may be defective.
• MC/DV high voltage PWB
• PCU PWB
• Development unit
• OPC drum unit
• High voltage circuit electrode
1
2
MX-4101N ADJUSTMENTS 5 – 9
4-C
Transfer voltage adjustment
This adjustment is needed in the following situations:
* When the primary transfer high voltage power PWB or Second-
* When the primary transfer high voltage power PWB or Second-
ary transfer 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.
* 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 a mode to be adjusted with the scroll key.
3)
Enter an adjustment value (specified value) and press [OK]
key.
By setting the default value (specified value), the specified
voltage is outputted.
When [EXECUTE] key is pressed, the transfer voltage is out-
putted.
key.
By setting the default value (specified value), the specified
voltage is outputted.
When [EXECUTE] key is pressed, the transfer voltage is out-
putted.
EXECUTE
EXECUTE
or after 30 sec.
10-key
ǂǂǂ6,08/$7,21ǂǂ12
&/26(
7(67
7+96(77,1*$1'287387
$˖
˷̚˹
˖7&/2:63(('&/.
$˖
˖7&0,''/(63(('&/.
%˖
˖7&/2:63(('&/&
&˖
˖7&0,''/(63(('&/&
'˖
˖7&0,''/(63(('&/0
)˖
˖7&/2:63(('&/0
(˖
˖7&/2:63(('&/<
*˖
˖7&0,''/(63(('&/<
+˖
˖7&/2:63(('%:.
,˖
˖7&0,''/(63(('%:.
-˖
˖7&3/$,1&/63;
.˖
˖7&3/$,1&/'3;
/˖
2.
(;(&87(
ǂǂǂ6,08/$7,21ǂǂ12
&/26(
7(67
7+96(77,1*$1'287387
$˖
˷̚˹
˖7&/2:63(('&/.
$˖
˖7&0,''/(63(('&/.
%˖
˖7&/2:63(('&/&
&˖
˖7&0,''/(63(('&/&
'˖
˖7&0,''/(63(('&/0
)˖
˖7&/2:63(('&/0
(˖
˖7&/2:63(('&/<
*˖
˖7&0,''/(63(('&/<
+˖
˖7&/2:63(('%:.
,˖
˖7&0,''/(63(('%:.
-˖
˖7&3/$,1&/63;
.˖
˖7&3/$,1&/'3;
/˖
2.
(;(&87(
Item/Display
Content
Setting
range
Default
value
Actual output
setting range
Default value
of actual
output value
A
TC1 LOW SPEED CL K
Primary transport
bias reference
value
bias reference
value
Color
K
In low speed
51 - 255
95
2
µA - 30µA
8
µA
B
TC1 MIDDLE SPEED CL K
In middle speed
146
15
µA
C
TC1 LOW SPEED CL C
C
In low speed
95
8
µA
D
TC1 MIDDLE SPEED CL C
In middle speed
146
15
µA
E
TC1 LOW SPEED CL M
M
In low speed
95
8
µA
F
TC1 MIDDLE SPEED CL M
In middle speed
146
15
µA
G
TC1 LOW SPEED CL Y
Y
In low speed
95
8
µA
H
TC1 MIDDLE SPEED CL Y
In middle speed
146
15
µA
I
TC1 LOW SPEED BW K
Black/White
K
In low speed
95
8
µA
J
TC1 MIDDLE SPEED BW K
In middle speed
146
15
µA
K
TC2 PLAIN CL SPX
Secondary
transport bias
reference value
transport bias
reference value
Color
Standard
paper
Front surface
51 - 255
130
2
µA - 100µA
40
µA
L
TC2 PLAIN CL DPX
Back surface
120
35
µA
M
TC2 PLAIN BW SPX
Black/White
Front surface
109
30
µA
N
TC2 PLAIN BW DPX
Back surface
99
25
µA
O
TC2 HEAVY CL SPX
Color
Heavy
paper
Front surface
88
20
µA
P
TC2 HEAVY CL DPX
Back surface
78
15
µA
Q
TC2 HEAVY BW SPX
Black/White
Front surface
78
15
µA
R
TC2 HEAVY BW DPX
Back surface
68
10
µA
S
TC2 HEAVY2 CL
Color
Heavy paper 2
88
20
µA
T
TC2 HEAVY2 BW
Black/White
78
15
µA
U
TC2 GLOSSY CL
Color
Gloss paper
88
20
µA
V
TC2 GLOSSY BW
Black/White
78
15
µA
W
TC2 OHP CL
Color
OHP
72
12
µA
X
TC2 OHP BW
Black/White
72
12
µA
Y
TC2 ENVELOPE CL
Color
Envelope
78
15
µA
Z
TC2 ENVELOPE BW
Black/White
78
15
µA
AA TC2 CLEANING
Cleaning process
63
8
µA
Click on the first or last page to see other MX-4100N / MX-4101N / MX-5000N / MX-5001N (serv.man13) service manuals if exist.