Sharp MX-2640N / MX-2640NR / MX-2640FN / MX-3140N / MX-3140NR / MX-3140FN / MX-3640N / MX-3640NR / MX-3640FN (serv.man36) Service Manual ▷ View online
MX-3640N ADJUSTMENTS AND SETTINGS 5 – 10
4-A
Print image main scanning direction
automatic magnification ratio adjustment
(Print engine)
1) Enter the SIM50-28 mode.
2) Select [BK-MAG ADJ] with the key.
3) Select the paper feed tray with paper in it with the key.
3) Select the paper feed tray with paper in it with the key.
(Any paper size will do.)
4) Press [EXECUTE] key.
The adjustment pattern is printed out.
5) Set the adjustment pattern on the document table.
Fit the adjustment pattern correctly with the document guide.
In this case, put 5 sheets of white paper on the printed adjust-
In this case, put 5 sheets of white paper on the printed adjust-
ment pattern.
6) Press [EXECUTE] key.
The following item is automatically adjustment.
* Print image main scanning di rection image magnification
* Print image main scanning di rection image magnification
ratio.
7) Press [OK] key.
The adjustment result becomes valid.
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MX-3640N ADJUSTMENTS AND SETTINGS 5 – 11
4-B
Print image off-center automatic
adjustment (Print engine)
(Each paper feed tray)
1) Enter the SIM50-28 mode.
2) Select [SETUP/PRINT ADJ] with the key.
3) Select [ALL] with the key.
3) Select [ALL] with the key.
By pressing [LEAD] or [OFFSET] key, the following items can
be executed individually.
* [LEAD]: Print image lead edge image position adjustment
* [OFFSET]: Print image off-center adjustment
* [LEAD]: Print image lead edge image position adjustment
* [OFFSET]: Print image off-center adjustment
When [ALL] is selected, both of the ab ove two items are
executed simultaneously.
4) Select a paper feed tray to be adjusted.
5) Press [EXECUTE] key.
The adjustment pattern is printed out.
6) Set the adjustment pattern on the document table.
Fit the adjustment pattern correctly with the document guide.
In this case, put 5 sheets of white paper on the printed adjust-
In this case, put 5 sheets of white paper on the printed adjust-
ment pattern.
7) Press [EXECUTE] key.
The following item is automatically adjustment.
* Print image lead edge image position adjustment
* Print image off-center adjustment
* Print image lead edge image position adjustment
* Print image off-center adjustment
8) Press [OK] key.
The adjustment result becomes valid.
Perform procedures 4) to 7) for each paper feed tray.
4-C
Copy mode image lead edge position,
image loss, void area, image off-center, sub
scanning direction image magnification
ratio automatic adjustment (Scanner)
(Document table mode)
1) Enter the SIM50-28 mode.
2) Select [OC ADJ] with the key.
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MX-3640N ADJUSTMENTS AND SETTINGS 5 – 12
3) Select the paper feed tray with paper in it with the key.
(Any paper size will do.)
4) Press [EXECUTE] key.
The adjustment pattern is printed out.
5) Set the adjustment pattern on the document table.
Fit the adjustment pattern correctly with the document guide.
In this case, put 5 sheets of white paper on the printed adjust-
In this case, put 5 sheets of white paper on the printed adjust-
ment pattern.
6) Press [EXECUTE] key.
The following item is automatically adjustment.
* Copy lead edge image reference position adjustment, image
* Copy lead edge image reference position adjustment, image
off-center, sub scanning direction image magnification ratio
automatic adjustment
7) Press [OK] key.
The adjustment result becomes valid.
4-D
Copy mode image lead edge position,
image loss, void area, image off-center, sub
scanning direction image magnification
ratio automatic adjustment (Scanner)
(RSPF mode)
1) Enter the SIM50-28 mode.
2) Press the [SPF ADJ] key.
3) Proceed to one of the thr ee screens for selecting the cassette
used to print RSPF adjustment patterns by selecting the corre-
sponding button:
SIDE1: RSPF adjustment for the front side
SIDE2: RSPF adjustment for the back side
ALL: RSPF adjustment for both the front and back sides
SIDE2: RSPF adjustment for the back side
ALL: RSPF adjustment for both the front and back sides
4) Select one of the casset tes that can be u sed to pr int RSPF
adjustment patterns. (Multiple selection is not allowed.)
5) Press the [EXECUTE] key, and the machine starts self-print of
RSPF adjustment patterns.
* The screen shows a message indicating that the machine is
* The screen shows a message indicating that the machine is
self-printing RSPF adjustment patterns.
When self-print finishes, the next screen appears where you
When self-print finishes, the next screen appears where you
can start RSPF adjustments.
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MX-3640N ADJUSTMENTS AND SETTINGS 5 – 13
6) RSPF adjustment patterns are loaded into the RSPF.
(Set so that the pattern surface faces up.)
* By pressing the [REPRINT] key, you can retur n to the cas-
sette selection screen and have the machine self-print
RSPF adjustment patterns again.
7) Press the [EXECUT E] key, and the machine st arts reading
RSPF adjustment patterns (for the front side).
* The screen shows a message indicating that the machine is
* The screen shows a message indicating that the machine is
reading and ca lculating RSPF adjustment patterns (for the
front side).
The machine starts calculating the adjustment amount (for
The machine starts calculating the adjustment amount (for
the front side) after it has read the patterns for the front side.
After the machine has finished calculating the adjustment
After the machine has finished calculating the adjustment
amount for the fr ont side, th e next screen appe ars where
you can have the machine st art reading RSPF adju stment
patterns (for the back side).
Adjustment Item List
• RSPF original leading edge adjustment (front side)
• RSPF original off-center adjustment (front side)
• RSPF original sub-scan magnification adjustment
• RSPF original off-center adjustment (front side)
• RSPF original sub-scan magnification adjustment
(front side)
8) RSPF adjustment patterns are loaded into the RSPF.
(Set so that the pattern surface faces down.)
* By pressing the [REPRINT] key, you can retur n to the cas-
sette selection screen and have the machine self-print
RSPF adjustment patterns again.
9) Press the [EXECUTE] key , and the machine st arts loading
RSPF adjustment patterns (for the back side).
* The screen shows a message indicating that the machine is
* The screen shows a message indicating that the machine is
reading RSPF adjustment patterns (for the back side).
The machine starts calculating the adjustment amount (for
The machine starts calculating the adjustment amount (for
the back side) after it has read the patterns for the back side.
After the machine has finis hed calculating the adjustment
amount for the back side, the next scr een appears where
you can view the results of the adjustments.
<Adjustment Item List>
• RSPF original leading edge adjustment (back side)
• RSPF original off-center adjustment (back side)
• RSPF original sub-scan magnification adjustment
• RSPF original off-center adjustment (back side)
• RSPF original sub-scan magnification adjustment
(back side)
10) The adjustment result screen appears.
This screen shows the current values along with the previous
values in parentheses.
* By pressing the [REPRINT] key, you can r eturn to the cas-
* By pressing the [REPRINT] key, you can r eturn to the cas-
sette selection screen and have the machine self-print
RSPF adjustment patterns (for the front and back sides)
again.
* To have the machine st art re-reading the RSPF adjustment
patterns (front and back sides), press the [RESCAN] key.
* To return to the top menu without saving the adjustment val-
ues into EEPROM and RAM, press the [RETRY] key.
* To display the data used for adjustment, press the [DA TA]
key.
11) To save the adjust ment values into EEPROM and RAM and
return to the top menu, press the [OK] key.
* To return to the result screen, press the [BACK] key.
* To return to the result screen, press the [BACK] key.
ADJ 5
Print engine image distortion
adjustment / OPC drum phase
adjustment / Color registration
adjustment
(Print engine section)
This adjustment must be performed in the following cases:
* When the color shift occurs.
* When the LSU is replaced.
* When the LSU is removed from the main unit.
* When the unit is installed or when the installing place is changed.
* When maintenance work is perfo rmed. (Replacement of the
* When the color shift occurs.
* When the LSU is replaced.
* When the LSU is removed from the main unit.
* When the unit is installed or when the installing place is changed.
* When maintenance work is perfo rmed. (Replacement of the
OPC drum, the OPC cartridge, the transfer unit, the transfer belt,
etc.)
* When [ADJ 4A] / [ADJ 16A] Print engine image magnification
ratio adjustment (BK) (main scanning direction) is performed.
* U2 trouble has occurred.
* When the PCU PWB is replaced.
* When EEPROM on the PCU PWB is replaced.
* When the color phase is not pr oper even after execution of the
* When the PCU PWB is replaced.
* When EEPROM on the PCU PWB is replaced.
* When the color phase is not pr oper even after execution of the
color balance adjustment.
* When the OPC drum drive section is disassembled.
* When the primary transfer unit is re placed. (when it is removed
* When the primary transfer unit is re placed. (when it is removed
from the machine)
* When the developing unit or the OPC drum unit is removed from
the machine.
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