Read Sharp MX-5500N / MX-6200N / MX-7000N (serv.man45) Service Manual online
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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