Read Sharp AR-C270 (serv.man9) Service Manual online
New procedure of photoconductor phase adjustment
(SIM 44-31)
(SIM 44-31)
1) Enter the SIM 44-31 mode.
2) Enter "2" in the setup item A (PRINT MODE) with the 10-key, and
press the [OK] key. (The default is "3.")
3) Select the paper tray with A4R (8.5
×
11R) paper in the setup item
E (PAPER SELECT) and press the [OK] key.
NOTE: Use the lowest paper tray.
4) Press the [EXECUTE] key, and the drum deflection adjustment
patterns (4 pages) are printed.
* Pattern numbers 1, 3, 5, and 7 are printed on the output pattern.
5) Check the deflection of 125.6mm pitch for each of C, M, and Y in
the four output patterns, and select the output pattern number with
the smallest deflection as the set value of each color, and set the
number to each of setup items B, C, and D. (After entering the ad-
justment value, press the [OK] key.)
the smallest deflection as the set value of each color, and set the
number to each of setup items B, C, and D. (After entering the ad-
justment value, press the [OK] key.)
6) After entering the adjustment value, enter "3" in the setup item A
with the 10-key and press the [EXECUTE] key to print an adjust-
ment pattern for checking again.
ment pattern for checking again.
If the above procedure is not satisfactory, select the PRINT MODE 1
to print 12 print patterns.
This allows to make more detailed check and adjustment. The adjust-
ment procedure is the same as procedure 5).
This procedure takes about 4 minutes.
to print 12 print patterns.
This allows to make more detailed check and adjustment. The adjust-
ment procedure is the same as procedure 5).
This procedure takes about 4 minutes.
NOTE: If there is an extra deflection other than the drum frequency
(125.6mm pitch), check the set values of the RS motor and
the fusing motor speed.
the fusing motor speed.
ADJ M9A
Image resist adjustment (Auto
adjustment) (AR-C250/C160/C270)
(New version of AR-C150)
adjustment) (AR-C250/C160/C270)
(New version of AR-C150)
The following items are automatically adjusted.
•
ADJ M9/ADJ1 main scanning direction copy magnification ratio ad-
justment (Scanner (writing) unit) (Black)
justment (Scanner (writing) unit) (Black)
•
ADJ M9/ADJ 2 main scanning direction image magnification ratio
adjustment, image resist adjustment (Scanner (writing) unit)
(Color)
adjustment, image resist adjustment (Scanner (writing) unit)
(Color)
•
ADJ M10 sub scanning direction image resist adjustment (Scanner
(writing) unit)
(writing) unit)
If this automatic adjustment of ADJ M9A is not satisfactory, perform
the manual adjustment of ADJ M9 and ADJ M10.
the manual adjustment of ADJ M9 and ADJ M10.
This adjustment is required in the following cases:
•
When the scanner (writing) unit is replaced.
•
When the scanner (writing) unit is removed from the machine.
•
When the main scanning direction image magnification ratio ad-
justment (scanner (writing) unit) (Black) is performed.
justment (scanner (writing) unit) (Black) is performed.
•
When color image mis-resist is generated in the main scanning di-
rection.
rection.
•
When color image mis-resist is generated in the sub scanning di-
rection.
rection.
•
When installation or the installing place is changed.
•
When U2 trouble occurs.
•
When ICU MAIN PWB is replaced.
•
When EEPROM on ICU MAIN PWB is replaced.
Note before adjustment
Before execution of this adjustment, check that the following adjust-
ment have been properly completed.
ment have been properly completed.
∗
Photoconductor phase adjustment (ADJ M8)
∗
Image skew adjustment (scanner (writing) unit) (ADJ M7)
1) Enter the SIM 50-22 mode.
125mm
125mm
125mm
Chec
k the deflection of 125mm pitch.
Deflection pattern of Magenta
A4R (8.5 x 11R)
7 – 9
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