Sharp MX-4100N Service Manual page 52

: Oct. 24 2008
1
Item/Display
K TC2 PLAIN CL SPX
1
L TC2 PLAIN CL DPX
M TC2 PLAIN BW SPX
1
N TC2 PLAIN BW DPX
O TC2 HEAVY CL SPX
P TC2 HEAVY CL DPX
Q TC2 HEAVY BW SPX
R TC2 HEAVY BW DPX
S TC2 HEAVY2 CL
T TC2 HEAVY2 BW
U TC2 GLOSSY CL
V TC2 GLOSSY BW
W TC2 OHP CL
1
X TC2 OHP BW
Y TC2 ENVELOPE CL
Z TC2 ENVELOPE BW
AA TC2 CLEANING
AB TC2 CLEAN LOW SPD
AC TC2 CLEAN MIDDLE SPD
AD TC2 CLEAN CLEANING
AE VPTC LOW SPEED CL
AF VPTC MIDDLE SPEED CL
AG VPTC LOW SPEED BK
AH VPTC MIDDLE SPEED BK
AI FPTC LOW SPEED CL
AJ FPTC MIDDLE SPEED CL
AK FPTC LOW SPEED BK
AL FPTC MIDDLE SPEED BK
AM DCPTC LOW SPEED CL
AN DCPTC MIDDLE SPEED CL
AO DCPTC LOW SPEED BK
AP DCPTC MIDDLE SPEED BK
AQ PTC_HT
AR HT_DUTY
ADJ 5
Image density sensor (image
registration sensor) adjustment
There are some parts variations in the image density sensor sec-
tion. Therefore, the absolute detection level differs in each
machine. To correct this, calibration is executed.
This adjustment is needed in the following situations:
* When the image density sensor (image registration sensor) is
replaced.
* U2 trouble has occurred.
* The PCU PWB has been replaced.
* The EEPROM of the PCU PWB has been replaced.
The targets of the adjustment are the color image density sensor
(image registration sensor F) and the black image density sensor
(image registration sensor R). There are following adjustment
methods.
* Color image density sensor (image registration sensor F) calibra-
tion SIM44-13
Content
Secondary Color Standard
transport bias paper
reference value
Black/
White
Color Heavy
paper
Black/
White
Color Heavy paper 2
Black/
White
Color
Black/
White
Color
Black/
White
Color
Black/
White
Cleaning process
Secondary In low speed print
transport
In middle speed print
cleaning bias
Cleaning
reference value
PTC applied Color
voltage control
Middle speed
(AC constant
Black/
voltage setting)
White
Middle speed
PTC applied Color
voltage control
Middle speed
(frequency
Black/
setting value)
White
Middle speed
PTC applied Color
voltage control
Middle speed
(DC constant
Black/
voltage setting
White
Middle speed
value)
PTC heater 0: OFF
operating 1-6: Environment conditions
environment (TC environment table 6 steps)
setting
Setting of the 0: OFF
supply power in 10: Lighting-up fully
PTC heater (10 steps)
constant
operation (Duty
ratio setting)
MX-5001N ADJUSTMENTS 5 – 10
Default value
Setting
41-sheet
range
machine
Front surface 51 - 255 130
Back surface
Front surface 109
Back surface 99
Front surface
Back surface
Front surface
Back surface
Gloss paper
OHP 72
72
Envelope
0 - 255
Low speed 0 - 255
Low speed
Low speed 1 - 255
Low speed
Low speed 0 - 255
Low speed
0 - 6
0 - 10
* Black image density sensor (image registration sensor R) cali-
bration SIM44-2
NOTE: The color image density sensor detects color image density
and image registration on front frame side, the black image
density sensor detects black image density and image reg-
istration on rear frame side. Therefore, two functions are
assigned to each sensor array
Before executing this adjustment, check to confirm the fol-
lowing items.
* 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 confirm that the transfer belt is clean and free from
scratches.
Actual output
50-sheet
setting range
machine
151 2µA - 100µA
120
130
109
88
78
78
68
88
78
88
78
88
78
78
78
63
0 0V - –1500V
0
85
100 0 - (1.94) - 4.01KV
100
100
100
192 0.5KHz - 1.5KHz
192
192
136
93 0 - (0.68) - 2.14KV
149
149
149
1 Always ON
5 0% - 100%
Default
value of
actual
output
value
40µA
35µA
30µA
25µA
20µA
15µA
15µA
10µA
20µA
15µA
20µA
15µA
12µA
12µA
15µA
15µA
8µA
0V
0V
–500V
2.47KV
2.47KV
2.47KV
2.47KV
0.5KHz
0.5KHz
0.5KHz
0.7KHz
–1.0KV
–1.4KV
–1.4KV
–1.4KV
50%