Sharp MX-3050N / MX-3060N / MX-3070N / MX-3550N / MX-3560N / MX-3570N / MX-4050N / MX-4060N / MX-4070N (serv.man6) Service Manual ▷ View online
MX-4070V ADJUSTMENTS AND SETTINGS 5 – 3
3. Details of adjustment
ADJ 1
Developing unit adjustment
1-A
Toner density control reference value
setting
setting
This adjustment must be performed in the following cases.
• When developer is replaced
• When developer is replaced
Be sure to execute this adjustment only when developer is
replaced. Never execute it in the other cases.
replaced. Never execute it in the other cases.
Perform the toner density reference control level adjustment with
the toner cartridges removed.
If adjustment is performed with toner cartridge installed, the EE-EL
trouble code or an over toner condition may occur.
1) With the front cover opened, enter Sim25-2
2) Close the front cover
3) Select a developing unit to be adjusted
4) When [EXECUTE] key is pressed, it is highlighted. The DV
the toner cartridges removed.
If adjustment is performed with toner cartridge installed, the EE-EL
trouble code or an over toner condition may occur.
1) With the front cover opened, enter Sim25-2
2) Close the front cover
3) Select a developing unit to be adjusted
4) When [EXECUTE] key is pressed, it is highlighted. The DV
roller rotates and the toner density sensor detects toner den-
sity and the output value is displayed.
The above operation is executed for 1 minutes and the aver-
age value of the toner density sensor detection level is set
(saves) 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.
sity and the output value is displayed.
The above operation is executed for 1 minutes and the aver-
age value of the toner density sensor detection level is set
(saves) 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.
If the operation is interrupted within 1 minutes the adjustment
result is not reflected.
When [EXECUTE] key is pressed during the operation, the
operation is stopped and [EXECUTE] key returns to the normal
display.
If [EE-EU], [EE-EL] or [EE-EC] is displayed, setting of the ref-
erence toner density control value is not completed normally.
Troubleshoot the cause, remove the cause and perform setting
again.
result is not reflected.
When [EXECUTE] key is pressed during the operation, the
operation is stopped and [EXECUTE] key returns to the normal
display.
If [EE-EU], [EE-EL] or [EE-EC] is displayed, setting of the ref-
erence toner density control value is not completed normally.
Troubleshoot the cause, remove the cause and perform setting
again.
5) Cancel Sim 25-2
6) Confirm that "Instal the toner cartridge " is displayed and instal
6) Confirm that "Instal the toner cartridge " is displayed and instal
the toner cartridge by the following procedures
7)
Shake the toner cartridge horizontally several times
8)
Open the front cover and insert each toner cartridge
Be sure to install the color cartridge to their proper positions.
Avoid installation to a different color position.
Avoid installation to a different color position.
Do not forcibly insert the toner cartridge.
Push it in until the cartridge is securely locked in place.
Push it in until the cartridge is securely locked in place.
Developing units removed, be sure to remove the toner car-
tridges as well to prevent toner clogging.
tridges as well to prevent toner clogging.
Mounting location of the toner cartridge of each color
9)
Close the front cover
10) Confirm that "Toner replacement in progress" is displayed and
wait until the display disappears (It takes 30 sec - 6 min)
This procedure is for checking the toner supply operation from
the toner cartridge to the DV unit. The operation time differs
depending on the toner quantity in the toner cartridge, uneven
distribution of toner and the internal state of the toner car-
tridge.
the toner cartridge to the DV unit. The operation time differs
depending on the toner quantity in the toner cartridge, uneven
distribution of toner and the internal state of the toner car-
tridge.
Error display
Error name
Details of error
EE-EL
EL abnormality
Sensor output level less than 77 or
control voltage over 207
control voltage over 207
EE-EU
EU abnormality
Sensor output level over 177 or
control voltage less than 52
control voltage less than 52
EE-EC
EC abnormality
Sensor output level other than 128
3
MX-4070V ADJUSTMENTS AND SETTINGS 5 – 4
Do not perform operations which interrupt the above operation
such as opening the front cover, entering the Sim mode and
turning OFF/ON the power. If this precaution is ignored. Trou-
ble codes F2-40 - 43 or F2-64 - 67 or a over toner condition
may occur.
such as opening the front cover, entering the Sim mode and
turning OFF/ON the power. If this precaution is ignored. Trou-
ble codes F2-40 - 43 or F2-64 - 67 or a over toner condition
may occur.
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.
Yellow, Magenta and Cyan.
If only one color is replaced color balance may be adversely
affected. Black developer can be replaced individually.
When developer is replaced be sure to perform the color balance
adjustment.
adjustment.
When not replacing the developer. do not execute Sim25-2
ADJ 2
High voltage values adjustment
2-A
Main charger grid voltage adjustment
This adjustment must be performed in the following cases.
• When the MC PWB has been 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
• When the MC PWB has been 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)
Enter the adjustment value (specified value) in the middle
speed mode and press [OK] key.
Enter the adjustment value of each mode which is specified on
the label attached on the MC PWB.
speed mode and press [OK] key.
Enter the adjustment value of each mode which is specified on
the label attached on the MC PWB.
When [EXECUTE] key is pressed the voltage entered in the proce-
dure 3) is outputted for 30sec and the set value is saved.
When [EXECUTE] key is pressed again, the output is stopped.
dure 3) is outputted for 30sec 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-
PWB. Since the adjustment value label is attached on the MC
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.
PWB. Since the adjustment value label is attached on the MC
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.
Since the high voltage output cannot be checked with a digital multi
meter in this model, a judgement of the output must be made by
checking the print image quality
meter in this model, a judgement of the output must be made by
checking the print image quality
2-B
Developing bias voltage adjustment
This adjustment must be performed in the following cases.
• When the MC PWB has been replaced
• U2 trouble has occurred
• The PCU PWB has been replaced
• The EEPROM of the PCU PWB has been replaced
1)
• When the MC PWB has been 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 and an item to be adjusted.
Item/Display (mode)
mode
adjustment
range
actual
voltage
MIDDLE
A
MIDDLE
SPEED
GB_K
SPEED
GB_K
Main charger
grid voltage
(middle
speed mode)
grid voltage
(middle
speed mode)
K
50 - 850
-607V
±5V
B
MIDDLE
SPEED
GB_C
SPEED
GB_C
C
50 - 850
-607V
±5V
C
MIDDLE
SPEED
GB_M
SPEED
GB_M
M
50 - 850
-607V
±5V
D
MIDDLE
SPEED
GB_Y
SPEED
GB_Y
Y
50 - 850
-607V
±5V
LOW
A
LOW
SPEED
GB_K
SPEED
GB_K
Main charger
grid voltage
(low speed
mode)
grid voltage
(low speed
mode)
K
50 - 850
-598V
±5V
B
LOW
SPEED
GB_C
SPEED
GB_C
C
50 - 850
-598V
±5V
C
LOW
SPEED
GB_M
SPEED
GB_M
M
50 - 850
-598V
±5V
D
LOW
SPEED
GB_Y
SPEED
GB_Y
Y
50 - 850
-598V
±5V
Item/Display (mode)
Content
Adjustmen
t range
Actual
voltage
MIDDLE
A
MIDDLE
SPEED
DVB_K
SPEED
DVB_K
Developing
bias voltage
(middle
speed)
bias voltage
(middle
speed)
K
0 - 600
–450V
5V
B
MIDDLE
SPEED
DVB_C
SPEED
DVB_C
C
0 - 600
–450V
5V
C
MIDDLE
SPEED
DVB_M
SPEED
DVB_M
M
0 - 600
–450V
5V
D
MIDDLE
SPEED
DVB_Y
SPEED
DVB_Y
Y
0 - 600
–450V
5V
MX-4070V ADJUSTMENTS AND SETTINGS 5 – 5
3) Enter the adjustment value (specified value) in the middle
speed mode and press [OK] key.
Enter the adjustment value of each mode which is specified on
the label attached on the MC PWB.
Enter the adjustment value of each mode which is specified on
the label attached on the MC PWB.
When [EXECUTE] key is pressed, the voltage entered in the proce-
dure 3) is outputted for 30sec and the set value is saved. When
[EXECUTE] key is pressed again the output is stopped.
dure 3) is outputted for 30sec 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
PWB . Since the adjustment value label is attached on the MC
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.
PWB . Since the adjustment value label is attached on the MC
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.
Since the high voltage output cannot be checked with a digital multi
meter in this model, a judgement of the output must be made by
checking the print image quality.
meter in this model, a judgement of the output must be made by
checking the print image quality.
2-C
Transfer current and voltage adjustment
This adjustment must be performed in the following cases.
• When the TC PWB has been replaced
• U2 trouble has occurred
• The PCU PWB has been replaced
• The EEPROM of the PCU PWB has been replaced
1) Enter the Sim 8-6 mode
2) Select an item to be adjusted
• When the TC PWB has been replaced
• U2 trouble has occurred
• The PCU PWB has been replaced
• The EEPROM of the PCU PWB has been replaced
1) Enter the Sim 8-6 mode
2) Select an item to be adjusted
LOW
A
LOW
SPEED
DVB_K
SPEED
DVB_K
Developing
bias voltage
(low speed)
bias voltage
(low speed)
K
0 - 600
–450V
5V
B
LOW
SPEED
DVB_C
SPEED
DVB_C
C
0 - 600
–450V
5V
C
LOW
SPEED
DVB_M
SPEED
DVB_M
M
0 - 600
–450V
5V
D
LOW
SPEED
DVB_Y
SPEED
DVB_Y
Y
0 - 600
–450V
5V
Item/Display (mode)
Content
Adjustmen
t range
Actual
voltage
Item/Display
Content
Setting
range
Default
value
Actual
output
output
value
A
TC1 LOW SPEED CL K
Primary transfer bias
adjustment value
adjustment value
color
K
low speed
0 - 255
85
10 μA
B
TC1 MIDDLE SPEED CL K
middle speed
0 - 255
94
12 μA
C
TC1 LOW SPEED CL C
C
low speed
0 - 255
85
10 μA
D
TC1 MIDDLE SPEED CL C
middle speed
0 - 255
94
12 μA
E
TC1 LOW SPEED CL M
M
low speed
0 - 255
85
10 μA
F
TC1 MIDDLE SPEED CL M
middle speed
0 - 255
94
12 μA
G
TC1 LOW SPEED CL Y
Y
low speed
0 - 255
85
10 μA
H
TC1 MIDDLE SPEED CL Y
middle speed
0 - 255
94
12 μA
I
TC1 LOW SPEED BW K
monochrome
K
low speed
0 - 255
85
10 μA
J
TC1 MIDDLE SPEED BW K
middle speed
0 - 255
94
12 μA
MX-4070V ADJUSTMENTS AND SETTINGS 5 – 6
*Heavy paper 1:106-176g/m
2
Heavy paper 2:177-220g/m
2
Heavy paper 3:221-256g/m
2
Heavy paper 4:257-300g/m
2
3) Enter the adjustment value (specified value) and press [OK]
key.
When [EXECUTE] key is pressed, the voltage entered in the proce-
dure 3) is outputted for 30sec and the set value is saved. When
[EXECUTE] key is pressed again the output is stopped.
dure 3) is outputted for 30sec and the set value is saved. When
[EXECUTE] key is pressed again the output is stopped.
By setting the value (specified value) the specified output is pro-
vided.
vided.
K
TC2 PLAIN CL SPX
Secondary transfer bias
adjustment value
adjustment value
color
Plain
paper
front surface
0 - 255
90
-30 μA
L
TC2 PLAIN CL DPX
back surface
0 - 255
90
-30 μA
M
TC2 PLAIN BW SPX
monochrome
front surface
0 - 255
90
-30 μA
N
TC2 PLAIN BW DPX
back surface
0 - 255
90
-30 μA
O
TC2 HEAVY1 CL SPX
color
Heavy
paper 1
front surface
0 - 255
90
-30 μA
P
TC2 HEAVY1 CL DPX
back surface
0 - 255
96
-35 μA
Q
TC2 HEAVY1 BW SPX
monochrome
front surface
0 - 255
90
-30 μA
R
TC2 HEAVY1 BW DPX
back surface
0 - 255
96
-35 μA
S
TC2 HEAVY2 CL SPX
color
Heavy
paper 2
front surface
0 - 255
90
-30 μA
T
TC2 HEAVY2 CL DPX
back surface
0 - 255
96
-35 μA
U
TC2 HEAVY2 BW SPX
monochrome
front surface
0 - 255
90
-30 μA
V
TC2 HEAVY2 BW DPX
back surface
0 - 255
96
-35 μA
W
TC2 HEAVY3 CL SPX
color
Heavy
paper 3
front surface
0 - 255
90
-30 μA
X
TC2 HEAVY3 CL DPX
back surface
0 - 255
96
-35 μA
Y
TC2 HEAVY3 BW SPX
monochrome
front surface
0 - 255
90
-30 μA
Z
TC2 HEAVY3 BW DPX
back surface
0 - 255
96
-35 μA
AA
TC2 HEAVY4 CL
color
Heavy paper 4
0 - 255
90
-30 μA
AB
TC2 HEAVY4 BW
monochrome
0 - 255
90
-30 μA
AC
TC2 OHP CL
color
OHP
0 - 255
103
-40 μA
AD
TC2 OHP BW
monochrome
0 - 255
103
-40 μA
AE
TC2 ENVELOPE CL
color
envelope
0 - 255
90
-30 μA
AF
TC2 ENVELOPE BW
monochrome
0 - 255
90
-30 μA
AG
TC2 THIN CL
color
thin paper
0 - 255
90
-30 μA
AH
TC2 THIN BW
monochrome
0 - 255
90
-30 μA
AI
TC2 GLOSSY PAPER CL
color
gloss paper
0 - 255
90
-30 μA
AJ
TC2 GLOSSY PAPER BW
monochrome
0 - 255
90
-30 μA
AK
TC2 EMBOSS CL
color
emboss paper
0 - 255
90
-30 μA
AL
TC2 EMBOSS BW
monochrome
0 - 255
90
-30 μA
AM
TC2 LABEL CL
color
label paper
0 - 255
90
-30 μA
AN
TC2 LABEL BW
monochrome
0 - 255
90
-30 μA
AO
TC2 FRONT EDGE LOW SPX
front edge bias adjustment
value
value
front surface low speed
0 - 255
76
-20 μA
AP
TC2 FRONT EDGE LOW DPX
back surface low speed
0 - 255
69
-15 μA
AQ
TC2 FRONT EDGE MIDDLE SPX
front surface middle speed
0 - 255
76
-20 μA
AR
TC2 FRONT EDGE MIDDLE DPX
back surface middle speed
0 - 255
69
-15 μA
AS
TC2 BACKEND LOW SPX
rear edge bias adjustment
value
value
front surface low speed
0 - 255
76
-20 μA
AT
TC2 BACKEND LOW DPX
back surface low speed
0 - 255
69
-15 μA
AU
TC2 BACKEND MIDDLE SPX
front surface middle speed
0 - 255
0
-0 μA
AV
TC2 BACKEND MIDDLE DPX
back surface middle speed
0 - 255
0
-0 μA
AW
TC2 INTERVAL LOW SPEED
interval bias adjustment
value
value
low speed(+)
0 - 255
66
4 μA
AX
TC2 INTERVAL MIDDLE SPEED
middle speed(+)
0 - 255
95
8 μA
AY
TC2 CLEANING MINUS LOW SPEED
cleaning bias adjustment
value
value
low speed(–)
0 - 255
54
-4 μA
AZ
TC2 CLEANING MINUS MIDDLE SPEED
middle speed(–)
0 - 255
59
-8 μA
BA
TC2 CLEANING PLUS LOW SPEED
low speed(+)
0 - 255
66
4 μA
BB
TC2 CLEANING PLUS MIDDLE SPEED
middle speed(+)
0 - 255
95
8 μA
BC
PTC LOW SPEED CL
PTC current adjustment
value
value
color
low speed
0 - 255
109
-200 μA
BD
PTC MIDDLE SPEED CL
middle speed
0 - 255
206
-400 μA
BE
PTC LOW SPEED BW
monochrome
low speed
0 - 255
109
-200 μA
BF
PTC MIDDLE SPEED BW
middle speed
0 - 255
206
-400 μA
BG
CASE VOLT LOW CL
PTC voltage adjustment
value
value
color
low speed
0 - 255
0
0 V
BH
CASE VOLT MIDDLE CL
middle speed
0 - 255
0
0 V
BI
CASE VOLT LOW BW
monochrome
low speed
0 - 255
0
0 V
BJ
CASE VOLT MIDDLE BW
middle speed
0 - 255
0
0 V
BK
DHV LOW SPEED CL SPX
separation bias
adjustment value
adjustment value
color
low
speed
front surface
0 - 255
80
1000 V
BL
DHV LOW SPEED CL DPX
back surface
0 - 255
109
1500 V
BM
DHV LOW SPEED BW SPX
monochrome
front surface
0 - 255
80
1000 V
BN
DHV LOW SPEED BW DPX
back surface
0 - 255
109
1500 V
BO
DHV MIDDLE SPEED CL SPX
color
middle
speed
front surface
0 - 255
226
3500 V
BP
DHV MIDDLE SPEED CL DPX
back surface
0 - 255
226
3500 V
BQ
DHV MIDDLE SPEED BW SPX
monochrome
front surface
0 - 255
226
3500 V
BR
DHV MIDDLE SPEED BW DPX
back surface
0 - 255
226
3500 V
Item/Display
Content
Setting
range
Default
value
Actual
output
output
value
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