Sharp Mx 3501 N Manual

56
CLEANING THE LASER UNIT
When the laser unit inside the machine becomes dirty, line-like color irregularities (colored lines) may appear in the print 
image. When the following conditions appear, clean the laser unit.
Identifying lines (colored lines) caused by a dirty laser unit
 Colored lines always appear in the same place. (The lines are never black.)
 The colored lines are parallel to the direction of paper feeding. 
 Colored lines appear not only when the copy function is used but also when...

57
4
Make sure that the cleaner at the tip of 
the cleaning tool is not dirty.
If the cleaner is dirty, remove the cleaner and replace it with a 
clean one. For the procedure for replacing the cleaner, see 
steps 5 through 7. If the cleaner is not dirty, go to step 8.
5
Pull the replacement cleaner out of the 
waste toner box.
The replacement cleaner is stored at the top of the waste toner 
box.
Grasp the end of the cleaner and pull it out of the waste toner 
box.
6
Remove the dirty cleaner from the tip...

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8
Clean the laser unit.
(1) Point the cleaner down and slowly insert 
the tool into the hole that you wish to clean.
Be sure to point the cleaner down.
(2) Insert the cleaning tool all the way into the 
hole and then pull it back out.
Pull the cleaning tool out until you feel the tip of the tool 
leave the cleaning surface of the laser unit.
(3) Repeat step (2) two or three times and then 
remove the cleaning tool.
9
Repeat step 8 to clean all holes in the 
laser unit (4 holes).
There are a total of 4...

59
11
Replace the cleaning tool.
(1) Point the cleaner up and hook the end of the 
tool (the end without the cleaner) onto the 
holder on the right.
(2) Align the holder with the hole in the center 
of the cleaning tool and slowly press down 
from above.
(3) Fit the holder into the hole in the tip (the end 
with the cleaner) of the cleaning tool.
12
Close the front cover. 

60
REPLACING THE TONER CARTRIDGES
When toner runs lower than 25%, ( ) appears in the display. When toner runs even lower, (  Toner 
supply is low.) appears. It is recommended that you keep a set of new toner cartridges so that you can replace them 
quickly when toner runs out.
1
Open the front cover.
Locations of color toner cartridges
(A): Yellow (B): Magenta
(C): Cyan (D): Black
Ready to scan for copy.
(                 Toner supply is low.)
Change the toner cartridge.
(                ) Ready to scan...

61
2
Pull the toner cartridge toward you.
Raise the toner cartridge lever and gently pull the toner 
cartridge horizontally toward you.
When pulling out the toner cartridge, pull it out gently. If the 
cartridge is pulled out abruptly, toner may spill out.
Example: Replacing the yellow toner cartridgeHold the toner cartridge with both hands as shown and pull it 
out of the machine.
3
Remove a new toner cartridge from its 
package and shake it horizontally five or 
six times.
When shaking the toner...

62
7
Close the front cover.
After the toner cartridge is replaced, the machine automatically 
enters image adjustment mode.
Caution
•Do not throw a toner cart ridge into a fire. Toner may fly and cause burns.
 Store toner cartridges out of the reach of small children.
 If a toner cartridge other than a SHARP-r ecommended toner cartridge is used, the machine may not attain full quality 
and performance and there is a risk of damage to the mach ine. Be sure to use a SHARP-recommended toner cartridge.
...

63
REPLACING THE WASTE TONER BOX
The waste toner box collects residual toner that is produced during printing. When the used toner box is full, the display 
will show Replace used toner container.. Follow the procedure below to replace the used toner box.
1
Open the front cover.
2
Release the used waste toner box.
Press the waste toner box release button.
The waste toner box will fall forw ard as shown at left. Wait until 
the box comes to a stop.
Keep the replacement cleaner that has not been used....

64
4
Place the box on a flat surface.
Place a sheet of newspaper on the surface before placing the 
box.
Do not point the holes down as used toner will spill out.
5
Remove the seals around the holes.
Grasp the edge of each seal and pull it out toward you. 
There are 5 seals. Remove all of the seals.
6
Plug the holes.
Grasp the edge of each black seal and insert it into a hole in the 
box to plug the hole. 
 There are 5 seals. Plug all of the holes.
 Do not discard the waste toner box. Place it in a...

65
8
Push the waste toner box into the 
machine.
Push the box in until it clicks into place.
9
Close the front cover.
Caution
Do not throw a waste toner box into a fire. Toner may fly and cause burns.
Store waste toner box out of the reach of small children.
When replacing the waste toner box, be aware that it may soil your clothes or the place where you remove it.