Sharp MX-5000N - CANCELLING PRINTING (AT THE MACHINE)

MX-5001N ADJUSTMENTS 5 – 13
If the adjustment is not completed normally, "ERROR" is dis-
played.
When an error occurs, check the following sections for any
abnormality.
• 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
• Color image sensor calibration plate
If any abnormality is found, repair and adjust again.
If an error occurs, the adjustment result is not revised.
ADJ 6 Image skew adjustment
(LSU unit)
This adjustment is needed in the following situations:
* When the color shift occurs.
* When the LSU unit is replaced.
* When the LSU unit is removed from the main unit.
* When a color image registration mistake occurs.
* When the unit is installed or when the installing site is changed.
(Required depending on the cases.)
* When there is an uneven density area or a difference in color
balance in the main scanning direction (back and forth).
* When the color phase is not matched by the color balance
adjustment.
* When the OPC drum drive unit is replaced.
* When the primary transfer unit is replaced.
NOTE: This adjustment can be executed efficiently by executing
the following procedures in advance.
The black (K) image skew, however, must be properly
adjusted for that.
1) Press [REGIST] button in SIM50-22 mode to execute the auto-
matic image registration adjustment.
2) The current skew level is displayed on the SKEW display
menu.
3) Put down the displayed skew level value.
(Meaning of the skew level value)
* When "R" is displayed in front of the value, turn and click the
skew adjustment screw (LSU) clockwise by the number of the
value.
* When "L" is displayed in front of the value, turn and click the
skew adjustment screw (LSU) counterclockwise by the number
of the value.
At that time, the fractional part after the decimal point is rounded.
NOTE: The K (black) image skew level cannot be checked with
this adjustment.
To check and adjust the K (black) image skew, follow the
procedures below and execute the adjustment.
1) Enter SIM61-4 mode.
2) Select the paper feed tray with A3 (11" x 17") paper in it by
changing the value of set item B.
3) Press [EXECUTE] key.
The check pattern is printed out.
4) Check the printed black image for any skew.
Measure the right angle level by using the six cross patterns
printed in black.
There are following two methods of checking the black image
for any skew (right angle).
Method 1:
Measure the length of the diagonal lines of the rectangle print
pattern. Check the difference in the length of the diagonal lines
for judgment of good or no good
Adjustment
value for
image
registration
operation
mode
AB REG_R
PATCH
(Y)
Patch detection level
R for check (Y)
0 - 255 0
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
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. )
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. )
Mode Display/Item Content Range
De-
fault
or end of print
EXECUTE
EXECUTE
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