Print Image Magnification Ratio Adjustment; Print Image Print Area Adjustment - Sharp MX-1810U Service Manual

ADJ 15
Print image position, image
magnification ratio, void area,
off-center adjustment (Print
engine) (Manual adjustment)
Normally if the adjustment is executed by ADJ 4 (automatic adjust-
ment), there is no need to execute this adjustment.
Only when the manual adjustment is required, execute this adjust-
ment.
In other words, this manual adjustment is executed when a satis-
factory result is not obtained from the automatic adjustment (ADJ
4).
15-A

Print image magnification ratio adjustment

(main scanning direction) (Print engine)
(Manual adjustment)
This adjustment must be performed in the following cases:
* When the LSU (writing) unit 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 50-10 mode.
EXECUTE
2) Set A4 (11" x 8.5") paper in the paper feed tray.
3) Select the paper feed tray set in procedure 2) with the scroll
key.
4) Press [EXECUTE] key.
The check pattern is printed out.
EXECUTE
End of print
MX-3610N ADJUSTMENTS AND SETTINGS 4 – 78
Check that the inside dimension of the printed halftone is 240 
5)
0.5mm.
240 0.5mm
If the above requirement is not met, do the following steps.
6) Change the set value of set item A.
When the set value is changed by 1, the dimension is changed
by 0.1mm.
When the set value is increased, the BK image magnification
ratio in the main scanning direction is increased. When the set
value is decreased, the BK image magnification ratio in the
main scanning direction is decreased.
Repeat procedures 2) - 6) until a satisfactory result is obtained.
15-B

Print image print area adjustment

(Print engine) (Manual adjustment)
This adjustment must be performed in the following cases:
* When the LSU is replaced or removed.
* When a paper tray is replaced.
* When the paper tray section is disassembled.
* When the manual feed tray is replaced.
* When the manual feed tray is disassembled.
* When the duplex mode paper transport section is disassembled.
* When the registration roller section is disassembled.
* U2 trouble has occurred.
* The PCU PWB has been replaced.
* The EEPROM of the PCU PWB has been replaced.
Before execution of this adjustment, be sure to execute the print
image magnification ratio adjustment (ADJ 15A) (main scanning
direction) (print engine) (manual adjustment).