Question about Toshiba 1360 Black and White Copier

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Trying to clean: corona wires, mirrors & upper fuser roller

Cannot locate the parts that I need to clean. Need a detailed diagram so I can locate parts. T Y !!

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Dear sir; I try my best to descript for you, corona wire have two, one we call charge corona wire it located above the drum,when you open the door you will see the toner cartridge on the bottom left corner of the toner ctg you will find a 1" squar blue plastic push up and pull out. the another one we call discharge corona wire, it located right under the drum unit, open the door lift up the **** shellon the bottom middle with a red plastic head, you have to remove waste toner bottle and then you can see a screw loose it ,lift up and remove the unit,you can use Q-tip withrubbing alcohol to clean it, hope you can find it. need help? I always here,
Good luck, let me know if you made it, thank you.
HAVE A HAPPY HOLIDAY !!!

Posted on Dec 18, 2008

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Model 600. Why is it dropping toner near transfer corona unit?


When is the last time the developer and drum where replaced? When the last time was a PM done? Very 250,000 copies a PM must be done? Which replaces the Corona Wires, Developer, Drum, Corona Grid, Web roller for fuser (Hot Part). Also during the PM the Tech should clean the toner out of the Waste Toner collection unit on the image unit. also clean the area around the drum and developer roller.

Oct 28, 2015 | Konica Minolta bizhub Printers & Copiers

Tip

Troubleshooting common laserjet printers problems


In order to understand and troubleshoot a Laserjet printer, I think it is important to understand how the printer functions. Laser printers for the most part contain some standard assemblies: Toner cartridge, Laser Scanning Assembly, High Voltage Power Supply, DC Power Supply, Paper Transport Assembly, Transfer Corona Assembly, Fusing Assembly, Printer Controller Circuitry, and Ozone Filter.
A laser printer undergoes a six step process that helps form images on paper. The six major steps are:

1. CLEANING- This is the first step in the process in which a rubber blade inside the printer cartridge scrapes any toner left on the drum into a used toner receptacle inside the cartridge. A fluorescent lamp discharges any remaining charge on the photosensitive drum (the photosensitive drum or EP drum loses its charge when exposed to light).

2. CHARGING- A special wire called the charging corona within the toner cartridge located above the photosensitive drum receives a high voltage from the High Voltage Power Supply. This high voltage is used to apply a strong , uniform negative charge to the surface of the drum.

3. WRITING- The laser is turned on and scans the drum from side to side, flashing on and off according to the bits of information the printer controller sends as it communicates the individual bits of the image. Where ever the laser touches, the photosensitive drum's charge is reduced to a slight negative charge. As the drum rotates, a pattern of the exposed areas is formed, representing the images to be printed.

4. DEVELOPING- Now the surface of the drum holds and electrical representation of the image being printed. Toner can now be transferred to the areas that were exposed in the writing step. A metallic roller called the developing roller inside the cartridge now acquires a charge from the HVPS. The toner sticks to this roller because there is a magnet located inside the roller and because of the electrostatic charges between the toner and the developing roller. The developing roller rotates toward the EP drum, the toner comes between the the developing roller and EP drum and is attracted to the areas that have been exposed by the laser and the toner is repelled by the areas that were not exposed to the laser. The EP drum continues to rotate until the developed image is ready to be transferred to paper.

5. TRANSFERRING- The developed image into position. The controller notifies the registration rollers that the paper should be fed through. The rollers move the paper underneath the EP drum, and the transfer process can begin. The controller sends a signal to the corona wire or corona roller (depending on which the printer has) and tells it to turn on. The corona wire/roller then acquires a strong positive charge from the HVPS and applies it to the paper. Now that the paper is charged, it pulls the toner from the EP drum and the line of contact between the roller and the paper. Once the rollers move the paper past the corona wire, the static-eliminator strip removes all charge from that line of paper.

6. FUSING- This is the final step in the process where the toner image is made permanent. The roller push the paper toward the fuser rollers. The fuser rollers grab the paper and is now in control of the paper. As the paper passes through the fuser, the 180 degree fuser roller melts the resin of the toner, and the rubberized pressure roller presses it permanently into the paper. The paper continues on through the fuser and then exits the printer.

The following picture will give you a general idea of the process and components.

6e8ecec.gif


TROUBLESHOOTING:

PAPER JAMS- These are by far the most common problem encountered by all printers at one point or another. Some common causes of paper jams are as follows:

1. The paper is wrinkled or has upturned edges, the wrong type of paper is used, the paper is not place properly in the feed tray (usually not even).

2. If paper jams start happening at a frequent rate then the problem could be a worn roller (which can be replaced and are not that expensive). The following pictures shows the rollers.

9016659.jpg

6a2eae9.jpg

3. Anther cause could be related to the drive gear of the pickup roller, shown here:
381b1a8.jpg


BLANK PAGES:

If your printer is printing nothing but blank pages, then the toner is not being put on the paper. There are three major causes for this happening.

1. The toner cartridge could be empty or if you have just bought a new cartridge it is possible that you purchased a defective one. If you forget to remove the sealing tape the toner will not be able to be accessed properly by the printer.

2. The Corona Assembly could have a malfunction such as a missing or damaged corona wire. If this is the case the developed image will not transfer from the EP drum to the paper. The following is a picture of Corona Assembly:
423433f.gif

3. Another cause is the High Voltage Power Supply. If the power supply does not charge the components with the proper voltages. Picture of an HVPS:
451fd29.jpg

REPETITIVE SMALL MARKS OR DEFECTS:

This usually happens with heavily used or older laser printers. The following could be causing the problem.

1. Toner may have been spilled inside the printer.

2. A chip or crack in the EP drum can be another cause which can cause a toner build up and can get stuck on one of the rollers. EP drum picture:
f036288.jpg

VERTICAL BLACK LINES ON THE PAGE:

This can be caused by the following:

1. A groove or scratch in the EP drum.

2. A dirty Corona Wire which prevents a sufficient charge from being placed on the EP drum.

VERTICAL WHITE LINES ON THE PAGE:

The number one cause is the following:

1. This usually happens when proper cleaning and maintenance is not performed on the printer. Foreign matter gets caught on the transfer Corona Wire.

IMAGE SMUDGING:

This happens when you pick up a paper that has just come out of the printer and when you touch the ink, it smudges or smears.

1. The fuser could be malfunctioning or need replacement due to a burnt out halogen light inside the heating roller.
87c0647.jpg

2. Dents or cold spots in the fuser heat roller can also cause the problem.

GHOSTING:

Ghosting is what you have when you can see light images of previously printed pages on the current page. Usually one of two things cause this problem.

1. Bad erasure lamps. This causes the previous electrostatic discharges to not be completely wiped away.

2. A broken cleaning blade. This causes old toner to build up on the EP drum and presents itself in the next printed image.

PRINTER PRINTS PAGES OF GARBAGE:

This happens when the print on the paper comes out like garbage and is not understandable or looks like some government secret code on the page. The following are usually the causes.

1. The printer driver software is not the proper driver for the printer or it is not configured for the correct page-description language (PCL or PostScript).

2. A bad formatter board. Remember the formatter board receives information from the computer and turns it into commands for the various components in the printer.

44a98cc.jpg


The following are some extra pictures to gain a better idea of some of the terminology used in this tip and get a better view of its components.
8c70d6a.jpg


Close up of Laser Assembly and mirrors:
96cb825.jpg


Laser diagram on how the process works:
84c37fe.gif

Fuser Gear:
c0f407d.jpg

Separation pad where pickup roller attached:
de7421c.jpg

Common Fuser Parts:
e7902b2.jpg

HP LASERJET ERROR MESSAGES:

00 Ready--The printer is in standby mode and ready to print.
02 Warming Up--The fuser is being warmed up before the 00 ready state.
05 Self Test--Full self test has been initiated from front panel.
11 Paper Out--The paper tray sensor is reporting no paper in tray.
13 Paper Jam--A piece of paper is caught in the paper path. Open the cover and remove any jammed paper and close the cover.
14 No EP Cart--No EP cartridge (toner cartridge) installed in the printer.
15 Engine Test--An engine self test is in progress.
16 Toner Low--The toner cartridge is low. Replace the toner soon.
50 Service--A fuser error has occurred. Commonly caused by a fuser lamp failure.
51 Error--Laser scanning assembly problem.
52 Error--Scanner motor in laser has malfunctioned.
55 Error--Communication problem between formatter and DC controller.

on Mar 16, 2010 | Printers & Copiers

1 Answer

Preventive maintenance time konica minolta bizhub 600


Yes every 250,000 prints the following is replaced

Developer, Ensure counter is cleared and Developer Charge is run
Drum
*Corona Wires and Corona Grid
*Transfer / separation wires
*Cleaning systems for above wires (Unless Cleaning system motors are shut down
*Fuser Web roller
also all of the above counters are cleared as the machine use the counters to determine what is new and what is old. And determine what voltages to assign to certain assy. if you lie to it and clear the counter and not replace codes will show up and image issues can happen.

* KIT PARTS
Developer and Drum separate

Should also check the upper and lower fuser roller located I the hot section and the fingers that protect those large rollers from allowing paper the to wrap around them.

Again clear counters!!!!!!!!!!!!!!! and run require developer and drum procedures. Try this as start

Precision Roller Printer Toner Cartridges Parts and Supplies Office...

Jul 30, 2015 | Konica Minolta Printers & Copiers

3 Answers

Minolta 7228 moved from one location to another now copies not clean.


I doubt that moving the machine has caused the problem shown.
Regardless- the copier drum is not being cleaned.
I would begin by replacing the Drum Blade.
It is technical and will require your knowledge of the service manual procedure.

Good luck

Jan 14, 2015 | Konica Minolta Printers & Copiers

1 Answer

Fuser problems


Fuser not cause light copy.If fuser problem the fuser unit not fixing the toner to paper (not fixing image).Light copies :dirty optical parts,Organic Photo Conductor drum,charge roller or charge corona wires or charge corona grid dirty,transfer/separator corona wires dirty.

Aug 13, 2012 | Printers & Copiers

1 Answer

My photocopy machine minolta ep4000 its up and bottom side of the page are coming black


When was the last time you had a Konica Minolta Tech come out and give it a cleaning and replace parts such as developer, Drum, corona wire xfer and sep wires, cleaning blade. Botton fuser roller mite need to be replaced. A Minolta legacy machine, try the web site below to get a start on the above parts Precision Roller Printer Toner Cartridges Parts and Supplies Office...

Oct 20, 2011 | Minolta EP4000/5000 CS/PRO Copier

1 Answer

Gestetner 2722z copier, new drum, new transfer belt, smudges yet


The image is not transferring properly..........

remove and clean all corona wires (thin wires that create the latent image) use a q tip and dip in rubbing alcoholhot

Also make sure the fuser rollers are hot(insert or trick safety switches to determine if the fuser lamps are lighting usually upper and lower

Also check the imaging lamp to be sure it does not have any dark burn marks on it and clean the mirrors and the glass under the coy area

Dec 30, 2008 | Gestetner Printers & Copiers

1 Answer

Black streaks appearing on copies


Well there is not to many things thst would cause that problem,try cleaning the corona wires ,all the mirrors,and check the upper fuser roller.

Dec 04, 2008 | Toshiba 1360 Black and White Copier

2 Answers

Three broken horizontal lines across all printed pages


sounds like a bad (defective) toner cartridge. You can also try cleaning the corona wire again.

Jun 21, 2007 | HP LaserJet III Printer

1 Answer

Black Spots all over my copies


There are lots of things that can cause this. Inspect the fuser assembly & verify that there isn't any teflon missing from the upper roller & that the lower roller is clean. The spots can also be caused by a build up of waste toner in the cleaning assembly, causing excess toner to be dropped on the copies as they pass under it. The cleaning assembly would need to be removed & cleaned to correct this. The spots are not always in the same place - but are they the same pattern? A worn drum assembly can cause spots that are usually a repeating pattern but located in different parts of multiple copies. Dirty corona wires can also cause random spots & rewiring the coronas would solve that.

Jun 11, 2007 | Toshiba DP2570 Printer

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