Brother Laserprinter Hl 1435 User Guide

							5 - 7   ROUTINE MAINTENANCE
7Clean the primary corona wire inside the drum unit by gently sliding the blue tab from right to left 
and left to right several times. Return the tab to the home position (▲) before you put the drum unit 
assembly back in the printer. If you do not, printed pages may have a vertical stripe.
Figure 5-11
8Put the drum unit assembly back in the printer. Close the front cover of the printer.
Figure 5-12 
						

							ROUTINE MAINTENANCE   5 - 8
Drum unit
This printer can print up to 20,000 pages* with one drum unit.
* At 5% print coverage (A4 or Letter size). The actual number of printed pages will vary depending on 
the average type of print job and paper. 
Change Drum message
If the LED shows the message below, it means the drum unit is near the end of its life. We recommend 
that you replace the drum unit with a new one before there is a noticeable deterioration in the print 
quality.
Figure 5-13
Caution
■While removing the drum unit, handle it carefully because it may contain toner.
■Every time you replace the drum unit, you should clean the inside of the printer. see Cleaning 
on page 5-12
■There are many factors that determine the actual drum life, such as the temperature, humidity, 
type of paper, type of toner used, number of pages per print job and so on. Under ideal 
conditions, the average drum life is estimated at up to 20,000 pages. The actual number of 
pages that your drum will print may be significantly less than this estimate. Because we have no 
control over the many factors that determine the actual drum life, we cannot guarantee a 
minimum number of pages that will be printed by your drum.
■Printing with a third-party drum unit may reduce not only the print quality but also the quality and 
life of the printer itself. Warranty coverage does not apply to problems caused by the use of 
third-party drum unit.
■For best performance, use only genuine Brother drum and toner. The printer should be used 
only in a clean, dust-free environment with adequate ventilation.
Drum
Ready
Alarm
Paper
Toner
Data 
						

							5 - 9   ROUTINE MAINTENANCE
Replacing the drum unit
Follow these steps to replace the drum unit. You can also view the drum unit replacement method in the 
instructional video on the supplied CD-ROM: 
1Open the front cover of the printer.
2Pull out the drum unit assembly.
Figure 5-14
Caution
■We recommend that you place the drum unit assembly on a piece of disposable paper or cloth 
in case you accidentally spill or scatter toner.
■To prevent damage to the printer from static electricity, do not touch the electrodes shown in 
Figure 5-15.
Figure 5-15
We recommend that you clean the printer when you replace the drum unit. See Cleaning in this 
chapter. 
						

							ROUTINE MAINTENANCE   5 - 10
3Hold down the blue lock lever and take the toner cartridge out of the drum unit assembly.
Figure 5-16
Caution
Handle the toner cartridge carefully. If toner scatters on your hands or clothes, immediately wipe or 
wash it off with cold water.
4Unpack the new drum unit.
Caution
Wait to unpack a drum unit until immediately before you put it in the printer. Exposure to direct 
sunlight or room light may damage the drum unit.
5Put the toner cartridge in the new drum unit until you hear it lock into place with a click. If you put 
the cartridge in properly, the blue lock lever is lifted automatically.
Figure 5-17
Caution
Make sure you fit the toner cartridge properly, or it may separate from the drum unit when you pick 
up the drum unit assembly.
■Discard the used drum unit according to local regulations, keeping it separate from domestic 
waste. If you have questions, call your local waste disposal office. 
■Be sure to seal up the drum unit tightly in a bag so that toner powder does not spill out of the unit. 
						

							5 - 11   ROUTINE MAINTENANCE
6Put the drum unit assembly in the printer.
Make sure that the printer is turned on, the front cover is open and the Drum and Alarm LED are lit.
Figure 5-18
7Reset the drum counter. See the instructions supplied with the new drum unit.
Caution
■The Drum LED indication does not disappear until you reset the drum counter.
■Do not reset the drum counter when you replace only the toner cartridge.
8Close the front cover.
9Make sure that the Drum LED is now off. 
						

							ROUTINE MAINTENANCE   5 - 12
Cleaning
Clean the outside and inside of the printer regularly with a dry soft cloth. When you replace the toner 
cartridge or the drum unit, make sure you clean the inside of the printer. If printed pages are stained with 
toner, clean the inside of the printer with a dry soft cloth.
See the Maintenance Tutorial section in the supplied CD-ROM. You can see instructional videos on 
your computer screen, showing you how to perform these tasks.
1You can see how to clean the scanner window.
2You can see how to clean the corona wire in the drum unit.
2
1 
						

							5 - 13   ROUTINE MAINTENANCE
Replacing maintenance parts
You need to replace the maintenance parts regularly to maintain print quality. You should replace the 
units listed below after printing the following number of pages.
* The actual number of printed pages may vary depending on your average type of print job and paper. 
These figures are based on 5% coverage per page. Item Approximate Life To Purchase Replacement
Fixing unit50,000 pages * Call Customer Service
Separator pad holder 
assembly50,000 pages * Call Customer Service
Pick up roller assembly50,000 pages * Call Customer Service 
						

							TROUBLESHOOTING   6 - 1
6
Identifying your problem
First, check the following:
■The power plug is connected properly and the printer is turned on.
■All of the protective parts have been removed.
■The toner cartridge and drum unit are installed properly.
■The front cover is fully closed.
■Paper is inserted properly in the paper tray.
■The interface cable is securely connected to the printer and the computer.
■The correct driver for the printer is installed and selected.
■The PC is set up to connect to the correct printer port.
Printer does not print:
If you did not solve your problem with the above checks, please find your problem and then go to the 
section listed:
Printer LED is blinking
See Control panel buttons on page 3-7.
Status Monitor Error Message appears
See Error messages in the status monitor on page 6-2.
Printer printed an Error Message
See Error message printouts on page 6-3.
Paper handling
See Paper handling on page 6-4 or See Paper jams and how to clear them on page 6-5.
Other problems
See Other problems on page 6-10.
Pages are printed, however there are problems with:
Print quality
See Improving the print quality on page 6-10.
Printout is incorrect
See Solving print problems on page 6-15.
Troubleshooting 
						

							6 - 2   TROUBLESHOOTING
Error messages in the status monitor
The Status Monitor will report problems with the printer. Take the corrective actions listed in the following 
table for the error message that the Status Monitor reports.
The default setting for the Status Monitor is off. If you would like to turn the Printer Status on, you can 
change the setting of the Status Monitor in the Device Options of the Advanced tab. See Device 
Options on page 2-5.
Error message
Action
Cover Open■Close the front cover of the printer.
Memory Full■Press the Control panel button to print the data remaining in the printer. 
■Reduce the print resolution or reduce the complexity of your document.
No Paper ■The paper tray may be out of paper or not properly installed. If it is empty, put 
a new stack of paper in the paper tray. 
Misfeed■If there is paper in the paper tray, make sure it is straight. If the paper is curled, 
straighten it before printing. Sometimes it is helpful to remove the paper, turn 
the stack over and put it back in the paper tray.
■Reduce the amount of paper in the paper tray, and then try again.
■Make sure you use paper that meets Brother’s recommended paper 
specifications. See What kind of paper can I use? on page 1-5.
Paper Jam■Take out the jammed paper from the indicated area.
See Paper jams and how to clear them on page 6-5.
Print Overrun■Press the Control panel button to print the data left in the printer. 
■If this does not clear the error, reduce the complexity of your document or 
reduce the print resolution.
Resolution Adapted
(The printer has printed the 
document at a reduced 
resolution)■Reduce the complexity of your document before you print to prevent 
automatic reduction of the resolution.
Toner Empty■See Replacing the toner cartridge on page 5-3.
Toner Low■Purchase a new toner cartridge and have it ready for when the Toner Empty 
status is indicated. 
						

							TROUBLESHOOTING   6 - 3
Error message printouts
The printer will report problems by printing an error message as defined in the following table. Take the 
corrective actions for the error message.
Error message Action
Memory Full■Press the Control panel button to print the data left in the printer. 
■Reduce the print resolution or reduce the complexity of your document.
Print Overrun■Press the Control panel button to print the data left in the printer. 
■If this does not clear the error, reduce the complexity of your document or 
reduce the print resolution.
Resolution Adapted
(The printer has printed the 
document at a reduced 
resolution)■Reduce the complexity of your document before you print to prevent 
automatic reduction in the resolution.