Sharp MX-5001N - Page 85

MX-5001N ADJUSTMENTS 5 – 43
ADJ 16 Scan image off-center
adjustment
This adjustment is needed in the following situations:
* When the scanner (reading) section is disassembled.
* When the scanner (reading) unit is replaced.
* When the RSPF section is disassembled.
* When the RSPF unit is installed.
* When the RSPF unit is replaced.
* When a U2 trouble occurs.
* When the scanner control PWB is replaced.
* When the EEPROM on the scanner control PWB is replaced.
16-A Scan image off-center adjustment
(Document table mode)
1) Make a copy of the adjustment chart (made by yourself) in the
adjustment mode (document table or RSPF).
2) Check the copy image center position.
If A' - B' = ±1.0mm, the adjustment is not required.
If the above condition is not satisfied, perform the following
procedures.
3) Enter the simulation 50-12 mode.
4) Select the adjustment mode OC with the scroll key.
5) Enter the adjustment value with 10-key, and press [OK] key.
The entered value is set.
When the set value is increased, the main scanning print posi-
tion is shifted to the front side by 0.1mm.
6) Press [CLOSE] key and shift from the simulation mode to the
copy mode and make a copy.
Repeat the procedures of 2) - 6) until the above condition is
satisfied.
16-B Scan image off-center adjustment
(RSPF mode)
16-C Scan image off-center adjustment
(DSPF mode)
This adjustment must be performed in the following cases:
* When the scan control PWB is replaced.
* When the EEPROM on the scan control PWB is replaced.
* When the scanner (reading) section is disassembled.
* When the scanner (reading) section is replaced.
* When U2 trouble occurs.
* When the PF section is disassembled.
* When the RSPF/DSPF unit is replaced.
NOTE: To execute this adjustment, it is required that the document
table mode off-center adjustment (ADJ 16A) must have
been properly adjusted.
a. Adjustment procedures
1) Prepare the adjustment chart.
Draw a line at the center of the front surface and the back sur-
face of A4 (11" x 8.5") paper in parallel with the paper transport
direction.
B
A=B
A
B'
A' - B' = 1.0mm
A'
(100%)
ǂǂǂ6,08/$7,21ǂǂ12
&/26(
7(67
25,*,1$/&(17(52))6(76(783



$˖
˷ ˹
˖2&
$˖
˖63)6,'(
%˖
˖63)6,'(
&˖
2.
Paper transport direction
Front surface Back surface
Draw a line at the center of the
front surface and the back surface
of paper in parallel with the paper
transport direction.