Read Sharp MX-1800N (serv.man14) Service Manual online
MX-1800N ADJUSTMENTS 6 – 13
2) Enter "1" with 10-key in the PRINT MODE of set item A, and
touch [OK] key.
3) Select the paper feed stage with A3 (or 11 x 17) in it with
PAPER SELECT of set item C, and touch [OK] key.
4) Touch [EXECUTE] key.
The adjustment patterns (8 pages) are printed.
Each identification number ("1" – "8") is printed on each printed
page of 8 adjustment patterns.
page of 8 adjustment patterns.
5) Check the deflection in 94mm pitch cycle of each C/M/Y print
pattern. Select a print pattern of the smallest deflection for
each color of C/M/Y, and use the pattern identification number
as the adjustment value, and enter it to set item B. Touch [OK]
key.
each color of C/M/Y, and use the pattern identification number
as the adjustment value, and enter it to set item B. Touch [OK]
key.
NOTE: If there is a peculiar deflection other than the drum cycle
(94mm pitch), check the following conditions.
* OPC drum drive section
* Transfer belt drive section
* Paper feed drive section
* Each motor speed set value (Set value of SIM48-6)
* OPC drum drive section
* Transfer belt drive section
* Paper feed drive section
* Each motor speed set value (Set value of SIM48-6)
ADJ 8
Print engine image
magnification ratio adjustment
(BK) (Main scanning direction)
(Print engine section)
magnification ratio adjustment
(BK) (Main scanning direction)
(Print engine section)
8-A
Print engine image magnification ratio
adjustment (BK) (Main scanning direction)
(Print engine section) (Manual adjustment)
adjustment (BK) (Main scanning direction)
(Print engine section) (Manual adjustment)
This adjustment must be executed in the following cases:
* When the LSU (writing) unit is replaced.
* When U2 trouble occurs.
* When the PCU PWB is replaced.
* When EEPROM on the PCU PWB is replaced.
1)
* When the LSU (writing) unit is replaced.
* When U2 trouble occurs.
* When the PCU PWB is replaced.
* When EEPROM on the PCU PWB is replaced.
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.
key.
4)
Touch [EXECUTE] key.
The check pattern is printed.
The check pattern is printed.
5)
Check that the inside dimension of the printed half tone is 240
± 0.5mm.
± 0.5mm.
If the above condition is not satisfied, execute the procedures
below.
below.
8
94mm
94mm
94mm
94mm
EXECUTE
EXECUTE
0
A:
Aȇxxx
Bȇ xx
Ȉ
BK-MAG
Ȉ
MTF
SIMULATION NO.50-10
PAPER CENTER OFFSET SETUP
xxx
64 140
OK
TEST
EXECUTE
CLOSE
Cȇ xx
Ȉ
CS1
Dȇ xx
Ȉ
CS2
0
A:
Aȇxxx
Bȇxx
Ȉ
BK-MAG
Ȉ
MTF
SIMULATION NO.50-10
PAPER CENTER OFFSET SETUP
xxx
64 140ġ
OK
TEST
EXECUTE
CLOSE
Cȇxx
Ȉ
CS1
Dȇxx
Ȉ
CS2
end of print
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