Sharp MX-5500N / MX-6200N / MX-7000N (serv.man45) Service Manual ▷ View online
MX-7000N ADJUSTMENTS 6 – 6
1)
Enter SIM8-2 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: By setting the default value, the specified voltage is
normally outputted.
The adjustment value of each color mode is specified on the label
attached to the MC/DV high voltage power PWB. Enter that value.
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.
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.
or after 30 sec.
10-key
A : 583
;
MIDDLE SPEED GB_K
B : 635
;
MIDDLE SPEED GB_C
C : 635
;
MIDDLE SPEED GB_M
D : 635
;
MIDDLE SPEED GB_Y
A:
SIMULATION NO.08-02
DV SETTING AND OUTPUT
XXX
230
850
OK
TEST
EXECUTE
EXECUTE
CLOSE
LOW/HIGH
MIDDLE
A : 500
;
MIDDLE SPEED GB_K
B : 635
;
MIDDLE SPEED GB_C
C : 635
;
MIDDLE SPEED GB_M
D : 635
;
MIDDLE SPEED GB_Y
A:
SIMULATION NO.08-02
DV SETTING AND OUTPUT
XXX
230
850
OK
TEST
EXECUTE
EXECUTE
CLOSE
LOW/HIGH
MIDDLE
Item Mode
Adjustment value
Monitor (MC/DV high voltage PWB)
Actual
voltage
Adjustment
range
Default value
Monitor voltage
(Specified value)
Connector
Pin
No.
No.
MIDDLE
A
MIDDLE SPEED
GB_K
GB_K
K
Main charger grid voltage
(Middle speed mode)
(Middle speed mode)
230 – 850
583
54.1
± 1.62V
CNMON
8
–620V
B
MIDDLE SPEED
GB_C
GB_C
C Main charger grid voltage
(Middle speed mode)
230 – 850
635
55.5
± 1.67V
CNMON
6
–635V
C MIDDLE SPEED
GB_M
M Main charger grid voltage
(Middle speed mode)
230 – 850
635
55.5
± 1.67V
CNMON
4
–635V
D MIDDLE SPEED
GB_Y
Y
Main charger grid voltage
(Middle speed mode)
(Middle speed mode)
230 – 850
635
55.5
± 1.67V
CNMON
2
–635V
LOW/
HIGH
HIGH
A
LOW SPEED
GB_K
GB_K
K
Main charger grid voltage
(Low speed mode)
(Low speed mode)
230 – 850
552
50.9
± 1.53V
CNMON
8
–585V
B
LOW SPEED
GB_C
GB_C
C Main charger grid voltage
(Low speed mode)
230 – 850
600
52.3
± 1.57V
CNMON
6
–600V
C LOW SPEED
GB_M
M Main charger grid voltage
(Low speed mode)
230 – 850
600
52.3
± 1.57V
CNMON
4
–600V
D LOW SPEED
GB_Y
Y
Main charger grid voltage
(Low speed mode)
(Low speed mode)
230 – 850
600
52.3
± 1.57V
CNMON
2
–600V
E
HIGH SPEED
GB_K
GB_K
K
Main charger grid voltage
(High speed mode)
(High speed mode)
230 – 850
604 (70-sheets machine)
598 (62/55-sheets
machine)
60.5
± 1.82V
CNMON
8
–690V
MX-7000N ADJUSTMENTS 6 – 7
1)
Remove the screw, and remove the main unit rear cover.
2)
Open the PWB holder.
3)
Enter SIM8-2 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 pin No. of the connector
CNMON on the MC/DV high voltage PWB and each adjust-
ment mode.
CNMON on the MC/DV high voltage PWB and each adjust-
ment mode.
6)
Apply a digital multi-meter to the connector CNMON pin on the
MC/DV high voltage PWB corresponding to the adjusted
mode.
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 again. 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
Developing 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 again. 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
Developing unit
OPC drum unit
High voltage circuit electrode
6-B
Developing bias voltage adjustment
This adjustment must be executed in the following cases:
* When MC/DV high voltage power PWB is replaced.
* When U2 trouble occurs.
* When PCU PWB is replaced.
* When EEPROM on the PCU PWB is replaced.
1)
* When MC/DV high voltage power PWB is replaced.
* When U2 trouble occurs.
* When PCU PWB is replaced.
* When EEPROM on the PCU PWB is replaced.
1)
Enter SIM8-1 mode.
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.
1
2
or after 30 sec.
10-key
A : 450
;
MIDDLE SPEED DVB_K
B : 450
;
MIDDLE SPEED DVB_C
C : 450
;
MIDDLE SPEED DVB_M
D : 450
;
MIDDLE SPEED DVB_Y
A:
SIMULATION NO.08-01
DV SETTING AND OUTPUT
XXX
0
700
OK
TEST
EXECUTE
EXECUTE
CLOSE
LOW/HIGH
MIDDLE
A : 500
;
MIDDLE SPEED DVB_K
B : 450
;
MIDDLE SPEED DVB_C
C : 450
;
MIDDLE SPEED DVB_M
D : 450
;
MIDDLE SPEED DVB_Y
A:
SIMULATION NO.08-01
DV SETTING AND OUTPUT
XXX
0
700
OK
TEST
EXECUTE
EXECUTE
CLOSE
LOW/HIGH
MIDDLE
Item
Mode
Adjustment value
Monitor (MC/DV high voltage PWB)
Actual
voltage
Adjustment
range
Default
value
Monitor voltage
(Specified value)
Connector
Pin
No.
No.
MIDDLE
A
MIDDLE SPEED DVB_K
K
Developing bias voltage (Middle
speed mode)
speed mode)
0 – 700
450
12.0
± 0.36V
CNMON
7
–450V
B
MIDDLE SPEED DVB_C
C
Developing bias voltage (Middle
speed mode)
speed mode)
0 – 700
450
12.0
± 0.36V
CNMON
5
–450V
C
MIDDLE SPEED DVB_M
M
Developing bias voltage (Middle
speed mode)
speed mode)
0 – 700
450
12.0
± 0.36V
CNMON
3
–450V
D
MIDDLE SPEED DVB_Y
Y
Developing bias voltage (Middle
speed mode)
speed mode)
0 – 700
450
12.0
± 0.36V
CNMON
1
–450V
LOW/
HIGH
HIGH
A
LOW SPEED DVB_K
K
Developing bias voltage (Low
speed mode)
speed mode)
0 – 700
420
11.1
± 0.33V
CNMON
7
–420V
B
LOW SPEED DVB_C
C
Developing bias voltage (Low
speed mode)
speed mode)
0 – 700
420
11.1
± 0.33V
CNMON
5
–420V
C
LOW SPEED DVB_M
M
Developing bias voltage (Low
speed mode)
speed mode)
0 – 700
420
11.1
± 0.33V
CNMON
3
–420V
D
LOW SPEED DVB_Y
Y
Developing bias voltage (Low
speed mode)
speed mode)
0 – 700
420
11.1
± 0.33V
CNMON
1
–420V
E
HIGH SPEED DVB_K
K
Developing bias voltage (High
speed mode)
speed mode)
0 – 700
450
12.0
± 0.36V
CNMON
7
–450V
MX-7000N ADJUSTMENTS 6 – 8
Remark: By setting the default value, the specified voltage is
normally outputted.
The adjustment value of each color mode is specified on the label
attached to the MC/DV high voltage power PWB. Enter that value.
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, 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, 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 screw, and remove the main unit rear cover.
2)
Open the PWB frame.
3)
Enter SIM8-1 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 pin No. of the connector
CNMON on the MC/DV high voltage PWB and each adjust-
ment mode.
CNMON on the MC/DV high voltage PWB and each adjust-
ment mode.
6)
Apply a digital multi-meter to the connector CNMON pin on the
MC/DV high voltage PWB corresponding to the adjusted
mode.
MC/DV high voltage PWB corresponding to the adjusted
mode.
7)
Press [EXECUTE] key.
The developing bias voltage is outputted for 30sec.
The developing bias 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 again. 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
Developing 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 again. 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
Developing unit
OPC drum unit
High voltage circuit electrode
6-C
Transfer voltage adjustment
This adjustment must be executed in the following cases:
* When the TC high voltage power PWB is replaced.
* When U2 trouble occurs.
* When the PCU PWB is replaced.
* When EEPROM on the PCU PWB is replaced.
1)
* When the TC high voltage power PWB is replaced.
* When U2 trouble occurs.
* When the PCU PWB is replaced.
* When EEPROM on the PCU PWB is replaced.
1)
Enter SIM8-6 mode.
1
2
CNMON
1
or after 30 sec.
10-key
A : 78
;
TC1 LOW SPEED CL K
B : 78
;
TC1 MIDDLE SPEED CL K
C : 68
;
TC1 LOW SPEED CL C
D: 68
;
TC1 MIDDLE SPEED CL C
A:
SIMULATION NO.08-06
THV SETTING AND OUTPUT
XXX
0
255
OK
TEST
CLOSE
E : 68
;
TC1 LOW SPEED CL M
F : 68
;
TC1 MIDDLE SPEED CL M
G: 68
;
TC1 LOW SPEED CL Y
H: 68
;
TC1 MIDDLE SPEED CL Y
I : 78
;
TC1 LOW SPEED BW K
J : 78
;
TC1 MIDDLE SPEED BW K
K: 130
;
TC1 HIGH SPEED BW K
L : 132
;
TC2 PLAIN CL SPX
EXECUTE
EXECUTE
EXECUTE
A: 200
;
TC1 LOW SPEED CL K
B : 78
;
TC1 MIDDLE SPEED CL K
C : 68
;
TC1 LOW SPEED CL C
D: 68
;
TC1 MIDDLE SPEED CL C
A:
SIMULATION NO.08-06
THV SETTING AND OUTPUT
XXX
0
255
OK
TEST
CLOSE
E : 68
;
TC1 LOW SPEED CL M
F : 68
;
TC1 MIDDLE SPEED CL M
G: 68
;
TC1 LOW SPEED CL Y
H: 68
;
TC1 MIDDLE SPEED CL Y
I : 78
;
TC1 LOW SPEED BW K
J : 78
;
TC1 MIDDLE SPEED BW K
K: 130
;
TC1 HIGH SPEED BW K
L : 132
;
TC2 PLAIN CL SPX
EXECUTE
MX-7000N ADJUSTMENTS 6 – 9
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 outputted.
By setting the default value (specified value), the specified voltage is outputted.
When [EXECUTE] key is pressed, the transfer voltage is outputted.
ADJ 7
Image density sensor, image
registration sensor adjustment
registration sensor adjustment
There are some assembly variations in the image density sensor
section. Therefore, the absolute detection level differs in each
machine. To correct this, calibration is executed.
This adjustment must be executed in the following cases:
* When the image density sensor is replaced.
* When the image resist sensor is replaced.
* When U2 trouble occurs.
* When the PCU PWB is replaced.
* When EEPROM on the PCU PWB is replaced.
The targets of the adjustment are the color image density sensor,
the black image density sensor, and the image registration sensor.
There are following adjustment methods.
* Color image density sensor adjustment (Calibration with the
section. Therefore, the absolute detection level differs in each
machine. To correct this, calibration is executed.
This adjustment must be executed in the following cases:
* When the image density sensor is replaced.
* When the image resist sensor is replaced.
* When U2 trouble occurs.
* When the PCU PWB is replaced.
* When EEPROM on the PCU PWB is replaced.
The targets of the adjustment are the color image density sensor,
the black image density sensor, and the image registration sensor.
There are following adjustment methods.
* Color image density sensor adjustment (Calibration with the
adjustment jig) SIM44-13
* Color/black image density sensor and the image registration sen-
sor adjustment SIM44-2
NOTE:
Before executing this adjustment, check to confirm the following
items.
* Check to confirm that the color image density sensor, the black
Before executing this adjustment, check to confirm the following
items.
* Check to confirm that the color image density sensor, the black
image density sensor, and the image registration sensor are
clean.
clean.
* Check to confirm that the image density sensor calibration plate
is clean.
* Check to confirm that the transfer belt is clean and free from
scratches.
Item
Display
Content
Set
range
Default
value
Actual output
setting range
Actual output
value of the
initial value
A
TC1 LOW SPEED CL K
Primary
transfer bias
reference value
transfer bias
reference value
Color
K
Lower speed
0 - 255
78
2
µA - 100µA
15
µA
B
TC1 MIDDLE SPEED CL K
Middle speed
0 - 255
78
2
µA - 100µA
15
µA
C
TC1 LOW SPEED CL C
C
Lower speed
0 - 255
68
2
µA - 100µA
10
µA
D
TC1 MIDDLE SPEED CL C
Middle speed
0 - 255
68
2
µA - 100µA
10
µA
E
TC1 LOW SPEED CL M
M
Lower speed
0 - 255
68
2
µA - 100µA
10
µA
F
TC1 MIDDLE SPEED CL M
Middle speed
0 - 255
68
2
µA - 100µA
10
µA
G
TC1 LOW SPEED CL Y
Y
Lower speed
0 - 255
68
2
µA - 100µA
10
µA
H
TC1 MIDDLE SPEED CL Y
Middle speed
0 - 255
68
2
µA - 100µA
10
µA
I
TC1 LOW SPEED BW K
Black and white
K
Lower speed
0 - 255
78
2
µA - 100µA
15
µA
J
TC1 MIDDLE SPEED BW K
Middle speed
0 - 255
78
2
µA - 100µA
15
µA
K
TC1 HIGH SPEED BW K
High speed
0 - 255
130
2
µA - 100µA
40
µA
L
TC2 PLAIN CL SPX
Secondary
transfer bias
reference value
transfer bias
reference value
Color
Normal
paper
paper
Front surface
51 - 255
132
2
µA - 60µA
25
µA
M
TC2 PLAIN CL DPX
Back surface
51 - 255
132
2
µA - 60µA
25
µA
N
TC2 PLAIN BW SPX
Black and white
Front surface
51 - 255
184
2
µA - 60µA
40
µA
O
TC2 PLAIN BW DPX
Back surface
51 - 255
184
2
µA - 60µA
40
µA
P
TC2 HEAVY CL SPX
Color
Heavy
paper
paper
Front surface
51 - 255
88
2
µA - 60µA
12.5
µA
Q
TC2 HEAVY CL DPX
Back surface
51 - 255
88
2
µA - 60µA
12.5
µA
R
TC2 HEAVY BW SPX
Black and white
Front surface
51 - 255
79
2
µA - 60µA
10
µA
S
TC2 HEAVY BW DPX
Back surface
51 - 255
79
2
µA - 60µA
10
µA
T
TC2 OHP CL
Color
OHP
51 - 255
72
2
µA - 60µA
8
µA
U
TC2 OHP BW
Black and white
51 - 255
72
2
µA - 60µA
8
µA
V
TC2 ENVELOPE CL
Color
Envelope
51 - 255
149
2
µA - 60µA
30
µA
W
TC2 ENVELOPE BW
Black and white
51 - 255
149
2
µA - 60µA
30
µA
X
TC2 CLEANING
Cleaning process
51 - 255
72
2
µA - 60µA
8
µA
Y
TC2 CLEAN LOW SPD
Secondary
transfer
cleaning bias
reference value
transfer
cleaning bias
reference value
Printing at low speed
51 - 255
72
–50V - –1500V
–200V
Z
TC2 CLEAN MIDDLE SPD
Printing at middle speed
51 - 255
100
–50V - –1500V
–400V
AA
TC2 CLEAN HIGH SPD
Printing at high speed
51 - 255
114
–50V - –1500V
–500V
AB
TC2 CLEAN CLEANING
Cleaning
51 - 255
156
–50V - –1500V
–800V
AC
PTC LOW SPEED CL
PTC current
reference value
reference value
Color
Lower speed
0 - 255
119
0/–100
µA - –700µA
–300
µA
AD
PTC MIDDLE SPEED CL
Middle speed
0 - 255
119
0/–100
µA - –700µA
–300
µA
AE
PTC LOW SPEED BK
Black and white
Lower speed
0 - 255
119
0/–100
µA - –700µA
–300
µA
AF
PTC MIDDLE SPEED BK
Middle speed
0 - 255
119
0/–100
µA - –700µA
–300
µA
AG
PTC HIGH SPEED BK
High speed
0 - 255
119
0/–100
µA - –700µA
–300
µA
AH
VCASE LOW SPEED CL
PTC case
voltage
reference value
voltage
reference value
Color
Lower speed
0 - 255
0
0/–200V - –1000V
0
AI
VCASE MIDDLE SPEED CL
Middle speed
0 - 255
0
0/–200V - –1000V
0
AJ
VCASE LOW SPEED BK
Black and white
Lower speed
0 - 255
0
0/–200V - –1000V
0
AK
VCASE MIDDLE SPEED BK
Middle speed
0 - 255
0
0/–200V - –1000V
0
AL
VCASE HIGH SPEED BK
High speed
0 - 255
0
0/–200V - –1000V
0
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