Sharp MX-6500N / MX-7500N (serv.man12) Service Manual ▷ View online
MX-7500N MX-LC12 (LARGE CAPACITY TRAY) 4 – 4
a. Side plate size switch
1) Remove the four fixing screws (blue) which are fixing the
1) Remove the four fixing screws (blue) which are fixing the
upper and the lower sections of the side plate F and the side
plate R.
2) Then fit the paper feed tray on the lower side of the side plate
F and the side plate R with the engraved marks of the side
plates according to the size, and insert it. Also fit the upper
side to the size and fix it with the four fixing screws (blue) that
have been removed in step 1).
b. Auxiliary guide size switch
1) When changing the size of the side plate R, check to confirm
1) When changing the size of the side plate R, check to confirm
the mark positions of "
" on the side plate R and the size
guide adjustment plate.
2) Loosen the fixing screw (flat screw 1pc.) of the auxiliary guide.
3) Change the mark position (
3) Change the mark position (
) of the auxiliary guide and the
cassette R from A4 to LT, and fix them with the fixing screw
(flat screw, 1pc.).
At that time, adjust so that the mark positions (
) on the
auxiliary guide and the cassette R are at the same positions of
the mark positions (
) of the side plate R and the size guide
adjustment plate checked in the procedure 1).
(If the scale of the size guide adjustment plate is at the center,
(If the scale of the size guide adjustment plate is at the center,
set it to the center. If the size guide adjustment plate is in 1mm
in the front side, set it in 1mm in the front side.)
c. Rear edge shaft switch
1) Remove the rear edge shaft fixing screw (blue) on the right
1) Remove the rear edge shaft fixing screw (blue) on the right
side of the paper feed tray, and remove the rear edge shaft.
2) Tighten the removed rear edge shaft with the fixing screw
(blue), and store it in the storage space inside the front cabi-
net.
F side
R side
F side
R side
A4
LT
MX-7500N MX-LC12 (LARGE CAPACITY TRAY) 4 – 5
3) Push the paper feed tray slightly, and return the disabled stop-
per to the original position, and fix with the fixing screw (1pc.).
At that time, check to insure that the stopper pawl is engaged
with the stopper reception of the large capacity tray unit.
4) Push the large capacity tray slowly into the original position.
G. Turn on the power of the main unit
1) Connect the power plug of the machine to the power outlet,
and turn ON the main power switch and the operation panel
power switch.
H. Size setting
Execute SIM 26-2 "Size setting" with the key operations of the main
unit.
1) The size selection menu of the large capacity tray is displayed
1) The size selection menu of the large capacity tray is displayed
on the operation message display.
2) Select a size button to be set on the message screen.
I. Off-center adjustment
(1) Adjustment with the simulation
1) Run SIM 50-10 using the keypad on the main unit.
The following screen appears.
2) This screen allows you to configure the print off-center adjust-
ment value for each paper feed tray.
3) On the touch panel, press [] to select "G: 50 :MAIN-LCC."
4) Enter the desired adjustment value through the numeric key-
4) Enter the desired adjustment value through the numeric key-
pad.
(This value, which defaults to 50, can be adjusted within the
(This value, which defaults to 50, can be adjusted within the
range of 1 to 99).
- Reducing the adjustment value by 1 causes the main scan/
- Reducing the adjustment value by 1 causes the main scan/
print position to shift by 0.1 mm toward the rear.
- Increasing the adjustment value by 1 causes the main scan/
print position to shift by 0.1 mm toward the front.
5) After entering the adjustment value, press the [EXECUTE] key
on the touch panel to start printing and save the setting.
6) Check that the adjustment pattern image is printed in the cor-
rect position.
Measure the dimensions of the void areas on the front- and
Measure the dimensions of the void areas on the front- and
rear-frame sides of the adjustment pattern image, and make
sure that the following conditions are met:
No adjustment is needed if A - B = 0 +/- 3.0 mm.
If the above condition is not met, do the following:
If the above condition is not met, do the following:
7) Change the adjustment value.
(Enter a new adjustment value and press the [OK] key).
Changing the adjustment value by 1 shifts the position by
Changing the adjustment value by 1 shifts the position by
approximately 0.1 mm.
Repeat steps 4) to 6) until the condition shown in step 6) is sat-
Repeat steps 4) to 6) until the condition shown in step 6) is sat-
isfied.
8) After you have completed the adjustment, exit from simulation
mode by pressing the [CA] key.
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A-B = 0 3.0mm
+
-
B
A
MX-7500N MX-LC12 (LARGE CAPACITY TRAY) 4 – 6
(2) Mechanical adjustment
Since the off-center adjustment is performed when shipping, there
is basically no need to perform this adjustment. If the center is
shifted, however, the simulation is normally used. If the shift is not
removed, perform the following adjustment procedures.
1) Slowly pull out the tray until it stops.
1) Slowly pull out the tray until it stops.
2) Loosen the stopper fixing screw (1 pc) on the right lower side
of the tray so that the stopper does not function.
3) Pull out the tray again until it stops.
a. When the shift is in the front side
To adjust the print line in the direction A from the paper center as
To adjust the print line in the direction A from the paper center as
shown in the figure:
1) Loosen two fixing screws (red screws) of the front/rear size
1) Loosen two fixing screws (red screws) of the front/rear size
guide adjustment plate, and move the size guide adjustment
plate in the direction A (R side) by the shift amount, and tighten
the red fixing screws (2 for each). Move the auxiliary guide in
the direction A by the same size.
Slightly push the tray, restore the stopper to the original posi-
tion, and fix the fixing screw.
Check to insure that the stopper pawl is engaged with the stop-
Check to insure that the stopper pawl is engaged with the stop-
per reception of the large capacity tray.
2) Slowly insert the tray to the original position.
Then make a copy to check to insure that there is no more
shift. Repeat the procedures until there is no shift.
A
R side
F side
MX-7500N MX-LC12 (LARGE CAPACITY TRAY) 4 – 7
b. When the shift is in the rear side
To adjust the print line in the direction B from the paper center as
To adjust the print line in the direction B from the paper center as
shown in the figure:
1) Loosen two fixing screws (red screws) of the front/rear size
1) Loosen two fixing screws (red screws) of the front/rear size
guide adjustment plate, and move the size guide adjustment
plate in the direction B (F side) by the shift amount, and tighten
the red fixing screws (2 for each). Restore the stopper to the
original position, and fix it with the fixing screws. Move the aux-
iliary guide in the direction B by the same size.
Check to insure that the stopper pawl is engaged with the stop-
Check to insure that the stopper pawl is engaged with the stop-
per reception of the large capacity tray.
2) Slowly insert the tray to the original position.
Then make a copy to check to insure that there is no more
shift. Repeat the procedures until there is no shift.
B
R side
F side
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