Sharp MX-2640N / MX-2640NR / MX-2640FN / MX-3140N / MX-3140NR / MX-3140FN / MX-3640N / MX-3640NR / MX-3640FN (serv.man36) Service Manual ▷ View online
MX-3640N ADJUSTMENTS AND SETTINGS 5 – 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.
1) Enter the SIM 8-2 mode.
* 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 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/DV high voltage power PWB.
GBK:XXX GBC:XXX GBM:XXX GBY:XXX
The default values specified for each model must be changed
The default values specified for each model must be changed
as follows.
26cpm/31cpm machine: +5
26cpm/31cpm machine: +5
36cpm machine: +10
When [EXECUTE] key i s pressed, the voltage entered in the
procedure 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/DV
high voltage power PWB.
Since the adjustment value label is attached on the MC/DV high
Since the adjustment value label is attached on the MC/DV high
voltage PWB, the PWB must be r emoved in order to check the
adjustment value.
This is a troublesome procedure. Therefore, it is advisable to put
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 midd le speed
mode is set, the adjustment values of the othe r 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 judgmen t of the output must be made by
checking the print image quality.
EXECUTE
EXECUTE
or after 30 sec.
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10-key
Item/Display (Mode)
Content
Adjustment
range
Actual voltage
26cpm/31
cpm
machine
36cpm
machine
MIDDLE
A
MIDDLE SPEED GB_K
Main charger grid voltage (Middle speed mode)
K
150 - 850
–620V5V
–625V5V
B
MIDDLE SPEED GB_C
Main charger grid voltage (Middle speed mode)
C
150 - 850
–620V5V
–625V5V
C
MIDDLE SPEED GB_M
Main charger grid voltage (Middle speed mode)
M
150 - 850
–620V5V
–625V5V
D
MIDDLE SPEED GB_Y
Main charger grid voltage (Middle speed mode)
Y
150 - 850
–620V5V
–625V5V
LOW
A
LOW SPEED GB_K
Main charger grid voltage (Low speed mode)
K
150 - 850
–610V5V
–610V5V
B
LOW SPEED GB_C
Main charger grid voltage (Low speed mode)
C
150 - 850
–590V5V
–590V5V
C
LOW SPEED GB_M
Main charger grid voltage (Low speed mode)
M
150 - 850
–590V5V
–590V5V
D
LOW SPEED GB_Y
Main charger grid voltage (Low speed mode)
Y
150 - 850
–590V5V
–590V5V
MX-3640N ADJUSTMENTS AND SETTINGS 5 – 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.
1) Enter the SIM 8-1 mode.
* 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 and an item to be adjusted.
3) Enter the adjustmen t value (specified value) in the middle
speed mode, and press [OK] key.
Enter the adjustment value of each mode which is specified on
Enter the adjustment value of each mode which is specified on
the label attached on the MC/DV high voltage power PWB.
When [EXECUTE] key is pressed, the voltage entered in the
procedure 3) is outputted for 30sec and the set value is saved.
When [EXECUTE] key is pressed again, the output is stopped.
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
Since the adjustment value label is attached on the MC/DV high
voltage PWB, the PWB must be r emoved in order to check the
adjustment value.
This is a troublesome procedure. Therefore, it is advisable to put
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 midd le speed
mode is set, the adjustment values of the othe r 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 judgmen t of the output must be made by
checking the print image quality.
Item/Display (Mode)
Content
Adjustment
range
Actual
voltage
MIDDLE
A MIDDLE
SPEED
DVB_K
Developing
bias voltage
(Middle
speed mode)
K
0 - 600
–450V
5V
B MIDDLE
SPEED
DVB_C
Developing
bias voltage
(Middle
speed mode)
C
0 - 600
–450V
5V
C MIDDLE
SPEED
DVB_M
Developing
bias voltage
(Middle
speed mode)
M
0 - 600
–450V
5V
D MIDDLE
SPEED
DVB_Y
Developing
bias voltage
(Middle
speed mode)
Y
0 - 600
–450V
5V
EXECUTE
EXECUTE
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or after 30 sec.
10-key
LOW
A LOW
SPEED
DVB_K
Developing
bias voltage
(Low speed
mode)
K
0 - 600
–450V
5V
B LOW
SPEED
DVB_C
Developing
bias voltage
(Low speed
mode)
C
0 - 600
–430V
5V
C LOW
SPEED
DVB_M
Developing
bias voltage
(Low speed
mode)
M
0 - 600
–430V
5V
D LOW
SPEED
DVB_Y
Developing
bias voltage
(Low speed
mode)
Y
0 - 600
–430V
5V
Item/Display (Mode)
Content
Adjustment
range
Actual
voltage
MX-3640N ADJUSTMENTS AND SETTINGS 5 – 8
2-C
Transfer current and voltage adjustment
This adjustment must be performed in the following cases:
* 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) Enter the SIM 8-6 mode.
* 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) Enter the SIM 8-6 mode.
2) Select an item to be adjusted.
3) Enter the adjustment value (specified value), and press [OK] key.
EXECUTE
EXECUTE
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,˖
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2.
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or after 30 sec.
10-key
Item/Display
Content
Setting
range
Default
value
Actual
output
value
A
TC1 LOW SPEED CL K
Primary transfer
bias adjustment
value
Color
K
Low speed
51 - 255
80
6A
B
TC1 MIDDLE SPEED CL K
Middle speed
51 - 255
109
10A
C
TC1 LOW SPEED CL C
C
Low speed
51 - 255
80
6A
D
TC1 MIDDLE SPEED CL C
Middle speed
51 - 255
109
10A
E
TC1 LOW SPEED CL M
M
Low speed
51 - 255
80
6A
F
TC1 MIDDLE SPEED CL
M
Middle speed
51 - 255
109
10A
G
TC1 LOW SPEED CL Y
Y
Low speed
51 - 255
80
6A
H
TC1 MIDDLE SPEED CL Y
Middle speed
51 - 255
109
10A
I
TC1 LOW SPEED BW K
Black/White
K
Low speed
51 - 255
80
6A
J
TC1 MIDDLE SPEED BW
K
Middle speed
51 - 255
109
10A
K
TC2 PLAIN CL SPX
Secondary transfer
bias adjustment
value
Color
Standard
paper
Front surface
51 - 255
103
–40A
L
TC2 PLAIN CL DPX
Back surface
51 - 255
90
–30A
M
TC2 PLAIN BW SPX
Black/White
Front surface
51 - 255
103
–40A
N
TC2 PLAIN BW DPX
Back surface
51 - 255
90
–30A
O
TC2 HEAVY1 CL SPX
Color
Heavy
paper 1
Front surface
51 - 255
83
–25A
P
TC2 HEAVY1 CL DPX
Back surface
51 - 255
76
–20A
Q
TC2 HEAVY1 BW SPX
Black/White
Front surface
51 - 255
69
–15A
R
TC2 HEAVY1 BW DPX
Back surface
51 - 255
69
–15A
S
TC2 HEAVY2 CL
Color
Heavy paper 2
51 - 255
83
–25A
T
TC2 HEAVY2 BW
Black/White
51 - 255
69
–15A
U
TC2 OHP CL
Color
OHP
51 - 255
69
–15A
V
TC2 OHP BW
Black/White
51 - 255
69
–15A
W
TC2 ENVELOPE CL
Color
Envelope
51 - 255
69
–15A
X
TC2 ENVELOPE BW
Black/White
51 - 255
69
–15A
Y
TC2 THIN CL
Color
Thin paper
51 - 255
103
–40A
Z
TC2 THIN BW
Black/White
51 - 255
103
–40A
AA
TC2 GLOSSY CL
Color
Gloss paper
51 - 255
83
–25A
AB
TC2 GLOSSY BW
Black/White
51 - 255
69
–15A
AC
TC2 CLEANING
Secondary transfer
cleaning bias
adjustment value
Cleaning process (negative pole)
51 - 255
59
–8A
AD
TC2 CLEAN LOW SPD
Low speed print mode
0 - 255
26
0V
AE
TC2 CLEAN MIDDLE SPD
Middle speed print mode
0 - 255
26
0V
AF
TC2 CLEAN CLEANING
Cleaning bias (positive pole)
0 - 255
102
500V
AG
PTC LOW SPEED CL
PTC current
adjustment value
Color
Low speed
51 - 255
73
–200A
AH
PTC MIDDLE SPEED CL
Middle speed
51 - 255
73
–200A
AI
PTC LOW SPEED BW
Black/White
Low speed
51 - 255
73
–200A
AJ
PTC MIDDLE SPEED BW
Middle speed
51 - 255
73
–200A
AK
CASE VOLT LOW CL
PTC voltage
adjustment value
Color
Low speed
0 - 255
0
0V
AL
CASE VOLT MID CL
Middle speed
0 - 255
0
0V
AM
CASE VOLT LOW BW
Black/White
Low speed
0 - 255
0
0V
AN
CASE VOLT MID BW
Middle speed
0 - 255
0
0V
MX-3640N ADJUSTMENTS AND SETTINGS 5 – 9
When [EXECUTE] key is pressed, the voltage entered in the procedure 3) is outputted for 30sec and the set value is saved.
When [EXECUTE] key is pressed again, the output is stopped.
By setting the default value (specified value), the specified output is provided.
When [EXECUTE] key is pressed again, the output is stopped.
By setting the default value (specified value), the specified output is provided.
ADJ 3
Image density sensor
adjustment
Before executing this adjustment, check to confirm the follow ing
items.
* Check to confirm that the color image density sensor (image reg-
* Check to confirm that the color image density sensor (image reg-
istration sensor F) and the black image density sensor (image
registration sensor R) are clean.
* Check to confirm that the image density sensor calibration plate
is clean.
* Check to confir m that the transfer belt is clean and free from
scratches.
3-A
Image density sensor adjustment
The transfer belt surface are used to make the sensitivity adjust-
ment of the color image density sen sor (image registration sensor
F) and the black image de nsity sensor (image registration sensor
R).
This adjustment executes automatically at the outset of registration
This adjustment executes automatically at the outset of registration
adjustment operation and process control operation as well as
SIM44-2.
Normally, therefore, it is not required to perform this adjustment. It
Normally, therefore, it is not required to perform this adjustment. It
is performed only when the sensor is replaced or when the adjust-
ment result is checked.
1) Enter SIM44-2 mode.
1) Enter SIM44-2 mode.
2) Press [EXECUTE] key.
The sensitivity adjustments of the color image density sensor
(image registration sensor F) and the black image density sen-
sor (image registration sensor R) are automatically performed.
After completion of the adjustment, the adjustment result is
After completion of the adjustment, the adjustment result is
displayed and [EXECUTE] key returns to the normal display.
If the adjustment is not completed normally, "ERROR" is dis-
If the adjustment is not completed normally, "ERROR" is dis-
played.
When an error occurs, check the following sections for any abnor-
mality.
• Color image density sensor (image registration sensor F)
• Black image density sensor (image registration sensor R)
• PCU PWB
• Transfer belt (dirt, scratch)
• Transfer belt cleaner
If any abnormality is found, repair and adjust again.
If an error occurs, the adjustment result is not revised.
• Color image density sensor (image registration sensor F)
• Black image density sensor (image registration sensor R)
• PCU PWB
• Transfer belt (dirt, scratch)
• Transfer belt cleaner
If any abnormality is found, repair and adjust again.
If an error occurs, the adjustment result is not revised.
ADJ 4
Image lead edge position,
image loss, void area, image
off-center, image magnification
ratio adjustment
(Automatic adjustment)
The following adjustment items can be executed automatically with
SIM50-28.
* ADJ 15
* ADJ 15
Print image position, image mag nification ratio, void ar ea, off-
center adjustment (Print engine) (Manual adjustment)
* ADJ 16
Scan image magnification ratio adjustment (Manual adjustment)
* ADJ 17
Scan image off-center adjustment (Manual adjustment)
* ADJ 18
Copy image position, image loss adjustment
(Manual adjustment)
(Menu in SIM50-28 mode)
Mode
Error display
Error content
Adjustment
value for
process
control
operation
mode
BK_SEN_
ADJ_ERR
Black image
density sensor
adjustment
abnormality
PCS_K LED ADJ error
(The target value is not
obtained after retried
three times.)
CL_SEN_
ADJ_ERR
Color image
density sensor
adjustment
abnormality
PCS_CL LED ADJ error
(The target value is not
obtained after retried
three times.)
BELT_READ_
ERR
Transfer belt
surface
reading
abnormality
PCS_K GRND error (The
surface detection level is
maximum or the minimum
value difference is outside
a reference range.)
SIMULATION NO.44-02
0
TEST
CLOSE
PCS_F_CL_KA : 500
PCS_F LED ADJ : 32
PCS_R LED ADJ : 40
PCS_F_CL_DARK : 0
PCS_F DARK : 0
PCS_R DARK : 0
PCS_F GRND : 0
PCS_F BELT MAX : 0
PCS_F BELT MIN : 0
PCS_R GRND : 0
PCS_F BELT DIF : 0
PROCON GAIN ADJUSTMENT
PCS_R BELT MAX : 0
PCS_R BELT MIN : 0
PCS_R BELT DIF : 0
REG_F LED ADJ : 32
REG_F DARK : 0
REG_F GRND : 0
REG_R LED ADJ : 40
REG_R DARK : 0
REG_R GRND : 0
REG_F BELT MAX : 0
REG_F BELT DIF : 0
REG_F BELT MIN : 0
REG_R BELT MAX : 0
10KEY
10KEY
10KEY
10KEY
10KEY
10KEY
10KEY
10KEY
10KEY
10KEY
10KEY
10KEY
10KEY
10KEY
10KEY
4
5
6
1
2
3
7
8
9
*
0
#
BACK
MONO
COLOR
EXIT
CLEAR
EXECUTE
1/2
Adjustment
value for
image
registration
operation
mode
REG_SEN_
F_ADJ_ERR
Registration
sensor F
adjustment
abnormality
REG_F LED ADJ error
(The target value is not
obtained after retried
three times.)
REG_SEN_
R_ADJ_ERR
Registration
sensor R
adjustment
abnormality
REG_R LED ADJ error
(The target value is not
obtained after retried
three times.)
REG_BELT_
F_READ_
ERR
F side transfer
belt surface
reading
abnormality
REG_F GRND error (The
surface detection level is
maximum or the minimum
value difference is outside
a reference range.)
REG_BELT_
R_READ_
ERR
R side transfer
belt surface
reading
abnormality
REG_R GRND error (The
surface detection level is
maximum or the minimum
value difference is outside
a reference range.)
Display/Item
Content
OC ADJ
Image loss off-center sub scanning direction image
magnification ratio adjustment (Document table mode)
BK-MAG ADJ
Main scanning direction image magnification ratio
adjustment
SPF ADJ
Image loss off-center sub scanning direction image
magnification ratio adjustment (RSPF mode)
SETUP/
PRINT ADJ
Print lead edge adjustment, image off-center (each paper
feed tray, duplex mode) adjustment
RESULT
Adjustment result display
DATA
Display of data used when an adjustment is executed
Mode
Error display
Error content
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