Sharp MX 3501N - Color Laser - Copier, Service Manual

Page: 59 / 448

MX3500N ADJUSTMENTS 6 – 14
1) Enter SIM50-10 mode.
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.
5) Check that the inside dimension of the printed half tone is 240
±
0.5mm.
If the above condition is not satisfied, execute the procedures
below.
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.
ADJ 9
Image off-center adjustment
(Print engine section)
This adjustment must be executed in the following cases:
* When the LSU is replaced or removed.
* When [ADJ8] print engine image magnification ratio (BK) (main
scanning direction) is performed.
* 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 section is disassembled.
* When the duplex section is installed or replaced.
* When the large capacity paper feed tray is installed or replaced.
* When the large capacity paper feed tray section is disassembled.
* When the regist roller section is disassembled.
* When U2 trouble occurs.
* When the PCU PWB is replaced.
* When EEPROM on the PCU PWB is replaced.
(Caution)
* Before execution of this adjustment, check the following item.
* Check to insure that the print engine image magnification ratio
adjustment (BK) (main scanning direction) has been properly
adjusted.
1) Enter SIM50-10 mode.
2) Select set item J with the scroll key and enter the value corre-
sponding to the paper feed tray to be adjusted.
EXECUTE
EXECUTE
0
A:
A ȇ xxx
B ȇ xx
Ȉ BK-MAG
Ȉ MTF
SIMULATION NO.50-10
PAPER CENTER OFFSET SETUP
xxx
64 140
OK
TEST
EXECUTE
CLOSE
C ȇ xx Ȉ CS1
D ȇ xx Ȉ CS2
0
A:
A ȇ xxx
B ȇ xx
Ȉ BK-MAG
Ȉ MTF
SIMULATION NO.50-10
PAPER CENTER OFFSET SETUP
xxx
64 140 ġ
OK
TEST
EXECUTE
CLOSE
C ȇ xx Ȉ CS1
D
ȇ
xx
Ȉ
CS2
end of print
Display/Item Content
Set
range
Default
value
A BK-MAG Main scan print
magnification ratio BK 60 – 140 100
B MFT Print off-center adjustment
value (Manual feed tray) 1 – 99 50
C CS1 Print off-center adjustment
value (Paper feed tray 1) 1 – 99 50
D CS2 Print off-center adjustment
value (Paper feed tray 2) 1 – 99 50
E CS3 Print off-center adjustment
value (Paper feed tray 3) 1 – 99 50
F CS4 Print off-center adjustment
value (Paper feed tray 4) 1 – 99 50
G LCC Print off-center adjustment
value (LCC) 1 – 99 50
EXECUTE
EXECUTE
0
A:
A : xxx
B : xx
; BK- MAG
; MTF
SIMULATION NO.50-10
PAPER CENTER OFFSET SET UP
xxx
[ 60~140 ]
OK
TEST
EXECUTE
CLOSE
C : xx ; CS1
D : xx ; CS2
0
A:
A : xxx
B : xx
; BK- MAG
; MTF
SIMULATION NO.50-10
PAPER CENTER OFFSET SET UP
xxx
[ 60~140 ]
OK
TEST
EXECUTE
CLOSE
C : xx ; CS1
D : xx ; CS2
End of print