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Printer Copier Repair Help Archives

HP mid range and higher printers are considered work horses.  they are designed for easy printer fax copier repair and installation of maintenance kits.   However, thee are some exceptions to the rule.  The HP 4250 and HP 4350 series laser printers are work horse, but one with a problem- swing arm gear.  Repairing the printers  normal problems such as paper feed issues and fuser assemblies are simple just like there previous models the HP 4200 and HP 4100 laser printers.  However, HP designed the drive gear/swing plate with a flaw: its plastic, it wear out often and you need to tear apart the printer in many pieces to repair.

The repair of the HP printer swing plate requires the removal of the coverings, circuit boards and other parts which takes an experience printer repair technician about an hour to complete.  Most technicians when learning how to do this repairs take 2 hours or more to do it.  It’s imp[important that you specify that you want a technician who has a proven repair record when doing this repair. It’s not  simple repair.  You will need to provide a good size printer repair work area the removal of the parts.

Also when repairing the swing plate of the HP laser printer you may need to replace the fuser assembly at the same time. The fuser assembly is a swap HP printer repair part that only takes a few minutes to accomplish.

Brother toner based MFC have been in the forefront of the multi-function all in one printer scanner copiers for the since the nineties long before Hewlett Packard  and other brands.  Brother produces good quality toner based small off and home based office printer copiers that have always preform well. Brother MFC ink based ones are very popular due to low cost. This article covers the toner based MFC color all in one repair maintenance image problems.

Repairing and performing maintenance on the Brother color copier printer scanners is not difficult if you know the steps to take. First, is to determine the cause of the problem. Just like when repairing HP, Lexmark and other copier printer scanners use the process on elimination. All color printer copiers contain four toner cartridges, a set of drums, imaging unit and fuser. Depending upon what the actual image repair maintenance problem looks like will determine which part to replace.

If the printer copier repair image problem only effects one color (black lines on color pages, or getting blue streaks/spots but not yellow, black or magenta, etc.) then you can eliminate the imaging unit and the fuser as the problem.   On the Brother MFC 9840, 9440 and similar models it uses one drum unit and four separate toner cartridges.  If you are only having problems with the cyan (Blue) then you either need to replace the cyan toner or the drum unit.  If the printer repair image problem is a yellow line then its the yellow toner or drum unit. If you are having a black line then things are a bit different because the problem can be the fuser too.

Now if the image problem does not follow and one particular problem then the cause could be the drum, image unit or the fuser. Print out several pages and see if the image problem is a pattern (repeats two or more times per page) or is a print repair maintenance problem along the whole page.  The image unit rotates once per page, the drums approx 3 times and the fuser 5 times per page.

The next step is to pull out the image unit, drum unit and he fuser and try to match the printer image problem with the actual unit.  If your technician has repair and performed printer copier maintenance repair worked on the Brother and other brands such as HP, Lexmark, Ricoh and canons then over the phone they should be able to diagnose the problem with 97% accuracy without you spending a dime of your money upfront.  If they can not give you an idea and you are in South Florida contact Advanced Business Computers printer copier repair department.

The Brother MFC printer copy scanners fax all in one office equipment toner based models  are good durable home office and small office machines. The Brother MFC models range from small inexpensive color ink based models to the 9940CN color all in one printer copier scanner faxes for small business (3..5 people).  Just like all equipment routine maintenance repairs are needed to keep them running.  One of the most common problems with the one based Brother MfC’s, as with all brands of printer copier scanners, are paper jams repairs.



95% of all paper jam repair maintenance problems with printer scanner copiers MFC  occur in three places: (1) ADf automatic document feeder on the top of the unit,  (2) in the plain paper drawer and (3) in the fuser area paper getting stuck drum the drum area.  The printer copier repair for the first two areas are not expensive repairs. They both require replacing the paper pick up assembly or roller and the paper separation pad or assembly. In fact, on some Brother MFC the printer copier scanner repair needed i indicated on the LCD “replaced PF1 fit” or “replaced PF2 kit”.  Both the PF1 and PF2 brother paper repair maintenance feed kits are USER replaceable. You do not need a technician to do the repair 95% of the time if you ave basic skills with a standard screw driver.

The Brother MFC fuser repair paper jam problem is a bit more expensive to repair. The fuser assembly on all brands of printers copiers scanners are considered normal wear and tear parts. In other words, they wear out over time and require repair or replacement.  ON some printer copier scanner fax machines repairing the fuser is as simple as removing a couple of screws. On other brands it requires you to remove covers, power supplies and other components.  On large copier printer new fuser as so expensive that most technicians rebuild them and the manufacturer offers a copier printer maintenance kits that contains all the parts to repair rebuild the fuser assemblies.  The Brother MFC printer copier scanners fuser are not rebuilt but just replaced as a unit.  Most Brother MFC’s fuser copier printer repair maintenance take an technician lessthan 30 minutes to complete.


here is the next set of copier repair codes fro Ricoh, Lanier, Savin and Gestetner printers copier fax scanners.  Remember repairing copier printers require more than just knowing the error codes. You need to determine the copier repair maintenance problem using the error code to point you in the right direction.

SC551 Pressure roller thermistor OP

SC552 Pressure roller warm-up error

SC553 Pressure roller overheat

SC554 Pressure roller ready temp low abnormal

SC555 Pressure roller ready temp abnormal

SC557 Pressure roller temp does nto increase

SC558 Zero cross signal abnormal

SC590 Exhaust/fusing motor error

SC391 Toner supply motor error

SC592 Toner black motor error

SC599 Copy exit tray motor lock

sc600 Communication error between main control and operation panel boards

SC602 Communication error between BICU & Hdd

SC603 Communication error within main control boards

SC604 Serial signal error in main control board

SC605 Communication error between main control and IPU

SC610 Communication time out

SC611 Communication break error

SC612 Communication command error

SC620 Communication command error BICU/SBCU and ADF

SC621 Communication error between BICU/SCBU and RADF

SC662 Communication error between BICU & RADF

SC623 Communication time out error

SC624 Communication time out

SC625 Communication error  between BICU & Finisher

SC627 CSs (RSS) communication error between line adapter & CSS

You will notice several of copier printer repair errors are very similar.  Many times several repair copier printer maintenance codes point to the same problem in different ways. Example are the pressure roller error codes related to the temperature which indicates that he thermal control parts of the fuser assembly of the printer copier need to be replaced. In some models this entails the actual replacement of just the thermistors. Advanced Business Computers is very experienced in the repair of copier printers scanners in the Southeast Florida areas. If you need further help in determine what an error code means please post a question here on this blog.

One of the most common problems beyond the regular HP maintenance repair kit installation is the failure of laser printers communication with the network.  If you HP printer, Lexmark laser or other laser printer fails to print a job then you need to check your communications.   On a network when you send a print job it goes through your switch to the laser printers Nic (network) card (HP jetdirect) and then to the laser printer copier formatter board.

The first item to check when repairing your Hp printer problem is your network cable on your printer copier to make sure its seated well in the printer and the network switch.  At the same time check to see if your NIC card (HP jetdirect card) shows a green light.  If the card does not show a green light then it is not communicating with the network or the formatter card in the printer. If this happens first install a new NIC card to repair the printer copier problem. IF the new card still does not show a light then either the formatter is bad or the network connection.

If you have a second network printer then take the network cable out  of the printer having the repair problem and put it in to the other printer to eliminate the switch and network cable as being the printer repair problem. If the cable works in the other printer then you know you will need to replace the formatter and possibly the jetdirect card.  If the connection does not work on the other printer then you have a network problem (bad cable, switch, other).  Repairing printer copiers communication problems is a process of elimination.

When repairing your HP printer or other brand copier printer  make sure you follow logical steps in eliminating possible printer failure to communicate problems. Advanced Business Computers Inc  is a great source for help and information. If you need a reliable printer copier repair company  contact then now for quick support and laser printer copier mFD repairs.


here is the next set o Ricoh repair maintenance error codes fro repair technicians. If you own a Ricoh, Savin, Gestetner or Lanier then these codes are all the same.  Repairing the complete line of Ricoh printer copiers is easy because all the Ricoh brands use the same error codes, parts and supplies.  If you prefer to place your copier printer under a service maintenance agreement or have questions concerning printer copier scanner repairs then contact Advanced Business Computers.

SC410 paper seperation leak

SC411 Separation bias leak error

SC420 Cleaning motor lock

SC422 PCC Leak

SC430 Quenching lamp error

SC440 Main motor lock/drum

SC441 Development motor lock

SC450 Paper transfer bias leak

SC451 Paper transfer belt motor lock

SC452 transfer belt mark detection error

SC455 Paper transfer belt discharge corona current leak

SC456 Paper transfer unit position error

SC457 Image transfer belt cleaning unti position error

SC460 Thermistor 1 temperature error

SC461 Thermnistor 2 error

SC471 Transfer Belt HP sensor error

SC490 Toner supply motor leak

SC492 Cooling an motor lock

SC493 Exhaust fan motor lock

SC495 Toner recycling unit error

SC496 Toner collection bottle error

SC497 Toner recycling motor error

Half the battle in repairing copier printers is knowing what the error codes mean.  If you are not familiar with copier printer repair terminology then you will need the complete service manual for the Ricoh, Lanier, Gestetner and Savin printer copier scanners to repair them.  Some copier printer repair maintenance codes are misleading for example motor lock does not mean you need to replace the motor. You may need to replace a gear set or during the repair of the copier printer find the paper clip or staple that is causing the motor to jam. If you need further assistance contact Advanced Business Computers in Southeast Florida.


This is going to be a shorter post on printer repair of for HP, Lexmark, Kyocera and other laser printers.  Many times during the year clients call with a common problem when when they use more than on size of paper. Its the HP repair size mis-match problem. This error occurs when the laser printer receives a command from the computer to print on a size of paper not in the paper cassettes or the MP tray (tray 1).  First, this is not a printer repair problem.  It’s a user error.

If your HP, Lexmark or Kyocera laser printer drawer is setup as legal size and you send a 8.5″ x 11″  (standard size paper) print job to it you will receive this error “size mis-match” or a message that says to load standard paper. The printer is acting correctly.  If thinks is should be getting a legal job sent to the paper drawer but instead you are sending a standard size paper job.  The repair of the printer is simple:  change the paper in the drawer to standard size. Now if you wanted to print legal and you think you are sending a legal size job and you get this message the Lexmark HP printer repair is still not needed.

Always check the properties for paper size when you get this message. You will get the HP printer repair error size mis-match if your properties of the file you are sending is incorrect. Each document you send to the Lexmark, Kyocera, HP or other laser printer maintains information from the last time it was printed.  If the last time you used legal paper when printing then unless you change the properties of the file with your computer it will think you are using legal size paper again. If you printer has standard paper and the computer says legal then you will get a size mis match error. The computer ALWAYS overrides the printers default configuration.

The MP tray is a little different. The MP tray can not tell the difference between legal or standard size paper.  If you say legal and it has standard 90% of the time you will get a paper jam! Why? Because it is expecting a long sheet of paper when it is printing and when it see the end of the page too soon it will give you a error. This is a simple HP repair maintenance problem resolution.

This simplifies the repair of HP Lexmark Kyocera printers.  Advanced Business Computers Inc in Miami Florida will help with your repair problem with one simple phone call 305 477-2320 or send them an email for additional help with your laser printer copier fax repairs and maintenance.


One of the more common problems is a light print or a vertical area of a page with light or no text on the printer copier.  Most printer copier image repair problems are a process of elimination.  All digital laser or led based printer copiers faxes use toner and developer that are either mixed in the copier printer or premixed in the toner cartridge. Knowing this fact is important when repairing copier printer scanner equipment.

If you need to repair printer image problems then with light areas then first determine if you have a toner cartridge that contains both toner and developer or if you have separate toner, developer and drum unit.  If you have an all in one toner cartridge then change the cartridge to see if the problem is resolved.  If changing the toner, developer drum all in one cartridge resolves the problem than you are either low on toner or there is a blockage in  the developer area of the cartridge.

If your printer copier has separate toner, developer and drum units then you need to look at the developer unit first and then the drum unit to repair the copier printer light image problem.  If you  are low in developer or the developed mag roller has a blockage then it will cause light or totally blank areas on your print.  When you repair of the copier printer image problem be careful not to touch the mag roller with your fingers which can cause skin oils to damage the roller and cause future clogs.  Now check if you are low of developer powder. Some copier printers do not require replacing the entire developer unit if you are low in developer. Instead you just need to buy the developer powder, put in the powder and adjust the machine. If you are not sure ask your copier printer repair technician.

If you copier printer is not low on developer look for blockage in the toner hopper or developer unit. Blockage will either cause toner and developer not to mix properly or not to be transferred to the drum unit. Another cause of light prints is the fuser assembly not applying enough pressure on the page to fully transfer the toner but this is a less likely cause than a developer problem.  Copier printer repair requires qualified technicians to resolve problems quickly.  This article is designed to give you and idea of the copier printer scanner repair process so when you speak to your certified printer copier repair tech you have a understanding of what they are telling you.


This copier repair error code list is getting longer and longer. the Ricoh, Lanier Savin and Gestetner repair copier printer scanner codes will take several more blog posts to complete.  If you need them fasted contact Advanced Business Computers Inc in Miami for a quick copier printer repair quote.  Some of the copier repair problems and maintenance mean the same and refer to the same printer copier repair procedures.  Make sure you reference the service manual for detail printer copier repair instructions.

Here is the next batch of ricoh savin lanier and gestetner copier printer service repair maintenance codes.

SC340 TD sensor output error

SC341  TD sensor adjustment error

SC342 TD Sensor adjustment error 2

SC 343 Yellow sleeve motor lock

SC 344 Magenta sleeve motor lock

SC 345 Developer  bias leak

SC 346 Color developement motor lock

SC 350 sensor/patern test error 1

SC 351 Sensor/VSG test error 2

SC 352 Sensor/pattern edge detect error 3

SC 353 Sensor LED current adnormal erro 4

SC 354 ID sensor error 5

SC 355 Yellow TD sensor adjustment error

SC 356 Magenta TD sensor gain adjustment error

SC 357 Cyan TD sensor gain adjustment error

SC 360 hard disk detection error 1

SC 362 hard disk detection error 2

SC 364 hard disk error

SC 365 Image storage address error

SC 366 hard disk bad sector max

SC 367 hard disk bad sector

SC 370 IMAC input FIFO error

SC 371 Yellow TD sensor detection error

SC 372 IMAC output error

SC 373 Magenta TD Sensor detection error

SC 374 IMAC modes setting error

SC 375 Yellow TD sensor lower detection abnormal

SC 376 Data transmission error

SC 377 Magenta TD lower

Next posting we will start with the calibration errors for repairing the copiers printer by Savin Ricoh and Gestetner.  If you are handy with tools you can handle simple repairs such as replacing fuser, drums and developers for the copier printers. However, may repairs requires technical knowledge and experience in copier printer repairs and maintenance. You may want to consider copier printer lease maintenance agreements that cover all supplies, repairs and labor on your printer copier scanner equipment for your business.

Copier printer repair first step in problem resolution is to determine the actual error.  If you plan to repair copiers or printer copier multi function office equipment then having a current list of error codes is essential.  Once you understand the copier repair error you can either opt or make sure your copier repair technician is qualified to do the work.

Before you choose a copier repair technician or maintenance company test their knowledge.  Call the copier printer repair company ask give them the error code and see if they can quickly determine what the printer copier repair error code means and provide a valid solution.  Do worry if the copier printer repair company say they need to see the machine first before they will give you a possible solution. Qualified copier printer repair facilities haev the ability to give phone quotes. be very careful of ones who can not.

Here is the next batch of error repair codes for Savin, Gestetner, Ricoh and Lanier copier printer scanner machines.

SC310 Potential sensor calibration error 1

SC311  Potential sensor calibration error 2

SC312  Potential sensor calibration error 3

SC314  Potential sensor calibration error 4

SC315  Potential sensor calibration error 5

SC316  Potential sensor calibration error 6

SC317  Potential sensor calibration error 7

SC320 Poylgon motor error/lock

SC321 Nolaser writing signal F-gate error 1

SC322 1st laser synchronization signal error

SC323 LD drive current over

SC324 Drive current over

SC325 Magnification correction error

SC326 2nd laser synchronization error

SC327 LD unit home position error 1

SC328 LD unit home position error 2

SC329 LD unit home position error3

SC320 LD unit no intial setting

SC321 LD unit home position error 4

SC332 LD unit present position error

sc335 Polygonal mirror motor error 1

sc336 Polygonal mirror motor error 2

sc337 Polygonal mirror motor error 3

sc338 Polygonal mirror motor error 4

Copier printer repair maintenance error codes are usually bunched in groups. You will notice several of the above printer copier service repair codes all related to the polygonal motor (laser motor).   This simplifies the repair of  copiers for copier printer technicians.  Advanced Business Computers Inc in Miami Florida will help with your repair problem with one simple phone call 305 477-2320 or send them an email for additional help with your Ricoh, Savin, Gestetner or Lanier copier printer scanners repairs and maintenance.