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Brother HL-7050 Series, Service Manual

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Brother HL-7050 Series Service Manual Download Page 278

CHAPTER 6 TROUBLESHOOTING

6-68

Press the 

Set

 switch to check if all the LEDs go out.

Press all the 7 control panel switches one by one to check if the character and the
backlight color will display respectively as the table shows below:

Switch

Character

Backlight color

+

1

Red

Go

2

Green

Back

3

Orange

Set

4

Red

–

5

Green

Job Cancel

6

Orange

Reprint

7

Red

(5) Check 

sensors

Press the 

Set

 switch.

Change status of the sensors and the following characters appear if the each sensor in
the printer is functioning correctly.

A:  Eject sensor

B:  Multi purpose tray paper empty sensor

C:  Tray paper empty sensor

D:  Rear cover sensor

E:  Cover open sensor

F:  Toner empty sensor

(6) Check 

scanners

  
Press the 

Set

 switch.

The LCD will display the following message:

The automatic correction of twin laser

has been finished correctly.

There is a problem in the scanner.

(7)  Check fan (1)

  
Press the 

Set

 switch.

ABCDEF

SCAN CHECK

SCAN OK

SCAN NG

Summary of Contents for HL-7050 Series

Page 1: ... RV VI IC CE E M MA AN NU UA AL L M M MO O OD D DE E EL L L H H HL L L 7 7 70 0 05 5 50 0 0 7 7 70 0 05 5 50 0 0N N N Read this manual thoroughly before maintenance work Keep this manual in a convenient place for quick and easy reference at all times Sep 2002 SM PRN031 ...

Page 2: ...ks registered in the United States and other countries and True Type is a trademark of Apple computer Inc Epson is a registered trademark and FX 80 and FX 850 are trademarks of Seiko Epson Corporation Hewlett Packard is a registered trademark and HP Laser Jet is a trademark of Hewlett Packard Company IBM IBM PC and Proprinter are registered trademarks of International Business Machines Corporation...

Page 3: ...DISASSEMBLY AND RE ASSEMBLY Procedures for disassembling and re assembling the mechanical system CHAPTER 5 MAINTENANCE Periodical replacements parts consumable parts etc CHAPTER 6 TROUBLESHOOTING Reference values and adjustments troubleshooting image defects troubleshooting malfunctions etc CHAPTER 7 HIDDEN FUNCTIONS Professional Menu mode and Service Menu mode etc APPENDICES Serial No description...

Page 4: ...ws 2 2 2 UNPACKING 2 3 3 INSTALL THE PRINTER 2 4 3 1 For All Users 2 4 3 1 1 Remove the protective parts 2 5 3 1 2 Install the drum unit assembly 2 5 3 1 3 Load paper into the paper tray 2 6 3 1 4 Print a test page 2 8 3 2 For Parallel Interface Cable Users for Windows users only 2 8 3 3 For USB Interface Cable Users for Windows users only 2 11 3 3 1 Install the driver connect the printer to your ...

Page 5: ...2 37 5 2 6 Back button 2 37 5 3 LCD Display 2 38 5 3 1 Backlights 2 38 5 3 2 LCD message 2 38 5 4 How to Use the Control Panel 2 39 5 5 Control Panel Setting Menu 2 41 5 5 1 Information 2 42 5 5 2 Paper 2 43 5 5 3 Quality 2 43 5 5 4 Setup 2 44 5 5 5 Print menu 2 46 5 5 6 Network 2 50 5 5 7 Interface 2 51 5 5 8 Reset menu 2 52 5 5 9 Set date and time 2 53 5 5 10 Set IP address 2 54 5 5 11 About emu...

Page 6: ... sensor 3 15 2 3 6 Eject sensor 3 15 2 3 7 Paper size sensor Tray ID sensor 3 16 2 3 8 Toner sensors 3 16 2 4 Drum Unit 3 17 2 4 1 Photosensitive drum 3 17 2 4 2 Primary charging roller 3 17 2 4 3 Transfer roller 3 17 2 4 4 Cleaner 3 17 2 5 Toner cartridge 3 17 2 6 Print Process 3 18 2 6 1 Charging 3 18 2 6 2 Exposure stage 3 18 2 6 3 Developing 3 20 2 6 4 Transfer 3 20 2 6 5 Cleaning 3 21 2 6 6 F...

Page 7: ... ASSY 4 60 3 25 Transfer Base ASSY 4 61 3 26 Paper Feed 4 67 3 27 Size SW PCB 4 75 3 28 Fan Motor 60 4 77 3 29 Ejection Gear Unit 4 78 4 LUBRICATION 4 79 5 PACKING 4 84 CHAPTER 5 PERIODIC MAINTENANCE 5 1 1 CONSUMABLE PARTS 5 1 1 1 Drum Unit 5 1 1 2 Toner Cartridge 5 3 2 PERIODICAL REPLACEMENT PARTS 5 6 3 PERIODICAL CLEANING 5 7 3 1 Cleaning the Printer Exterior 5 7 3 2 Cleaning the Printer Interio...

Page 8: ...61 8 7 Windows 95 98 Me Peer to Peer HP JetAdmin Compatible Method Troubleshooting 6 62 8 8 Windows 95 98 Me NT 4 0 2000 XP Peer to Peer Print NetBIOS Troubleshooting 6 62 8 9 Internet Print TCP IP Troubleshooting 6 62 8 10 Windows 95 98 Me 2000 XP IPP Troubleshooting 6 63 8 11 Novell Netware Troubleshooting 6 63 8 12 AppleTalk Troubleshooting 6 64 8 13 Apple TCP IP Printing System 8 6 or later 6 ...

Page 9: ...MAIN PCB CIRCUIT DIAGRAM HL 7050 8 9 A 9 10 MAIN PCB CIRCUIT DIAGRAM HL 7050 9 9 A 10 11 ENGINE PCB CIRCUIT DIAGRAM HL 7050 1 3 A 11 12 ENGINE PCB CIRCUIT DIAGRAM HL 7050 2 3 A 12 13 ENGINE PCB CIRCUIT DIAGRAM HL 7050 3 3 A 13 14 LOW VOLTAGE POWER SUPPLY PCB CIRCUIT DIAGRAM 100V HL 7050 1 2 A 14 15 LOW VOLTAGE POWER SUPPLY PCB CIRCUIT DIAGRAM 200V HL7050 2 2 A 15 16 SERIAL NO DESCRIPTIONS A 16 17 ...

Page 10: ...fter August 2 1976 Compliance is mandatory for products marketed in the United States One of the following labels on the back of the printer indicates compliance with the FDA regulations and must be attached to laser products marketed in the United States The label for Japanese manufactured products MANUFACTURED K BROTHER INDUSTRIES LTD 15 1 Naeshiro cho Mizuho ku Nagoya 467 8561 Japan This produc...

Page 11: ...r unit Since the variable resistor in the laser unit is adjusted in accordance with the standards never touch it Caution Use of controls adjustments or performance of procedures other than those specified in this manual may result in hazardous radiation exposure For Finland and Sweden LUOKAN 1 LASERLAITE KLASS 1 LASER APPARAT Varoitus Laitteen käyttäminen muulla kuin tässä käyttöohjeessa mainitull...

Page 12: ...G Im Falle von Störungen der Lasereinheit muß diese ersetzt werden Das Gehäuse der Lasereinheit darf nicht geöffnet werden da sonst Laserstrahlen austreten können Location of the laser beam window LITHIUM BATTERIES CAUTION DANGER OF EXPLOSION IF BATTERY IS INCORRECTLY REPLACED REPLACE ONLY WITH THE SAME OR EQUIVALENT TYPE RECOMMENDED BY THE MANUFACTURER DISPOSE OF USED BATTERIES ACCORDING TO THE M...

Page 13: ... object in the path of the laser beam Be sure to take off any personal accessories such as watches and rings before working on the printer A reflected beam though invisible can permanently damage the eyes Since the beam is invisible the following caution label is attached on the laser unit DANGER iPELIGRO FARE FARE ATTENTIE DANGER VARNING VAROITUS GEFAHR ...

Page 14: ...es included in this manual WARNING Always turn off the power switch and unplug the power cord from the power outlet before accessing any parts inside the printer WARNING Some parts inside the printer are extremely hot immediately after the printer is used When opening the front cover or rear cover to access any parts inside the printer never touch the red colored parts shown in the following figur...

Page 15: ...ter Setup Menu Printer Status Monitor The printer status monitor program can show the current status of your printer When printing the animated dialog box appears on your computer screen to show the current printing process If an error occurs a dialog box will appear to let you know what to correct If you have turned on the interactive Help you can get visual guidance on your PC screen on the acti...

Page 16: ...Use this function when you want to print photographic images Environment Friendly Economy Printing Mode This feature will cut your printing cost by saving toner It is useful for obtaining draft copies for proof reading Sleep Mode Power Save Mode Sleep mode automatically reduces power consumption when the printer is not in use for a certain period of time The printer consumes less than 16W when in ...

Page 17: ...r paper cassette Tray 1 Multi purpose extension flap Multi purpose tray Top cover Face down output tray Extension flap Control panel USB connector Face up output tray Serial interface connector Network board slot for optional Network board Card slot for optional CompactFlashTM card AC power inlet Power switch ...

Page 18: ...nomy printing mode up to 20 toner saving Print speed Up to 28 ppm When loading A4 Up to 30 ppm When loading Letter size paper Warm up Max 20 seconds at 23 C 68 F First print Approx 11 seconds When loading A4 or Letter size paper using face down print delivery from the paper tray Consumables Toner cartridge Life expectancy 12 000 single sided pages cartridge Drum unit Life expectancy 40 000 single ...

Page 19: ...standard DIMM 2 Control Panel Display LCD 2 lines by 16 column liquid crystal display with a three color back light LED 1 LED Buttons 7 buttons Diagnostics Self diagnostic program 1 NOTE The standard memory installed varies depending on the country 2 NOTE The DIMM Dual in Line Memory Module must have the following specifications Type 100 pin Access time 60 nsec 80 nsec Capacity 16 32 64 128 Mbytes...

Page 20: ...ting 10 to 32 5 C 50 to 90 5 F Storage 0 to 35 C 38 to 95 F Humidity Operating 20 to 80 non condensing Storage 10 to 80 non condensing Dimensions Printer 485 x 480 x 421 mm W x D x H 19 1 x 18 9 x 16 6 inches Carton 575 x 665 x 570 mm W x D x H 22 6 x 26 2 x 22 4 inches Weight Printer Approx 24 1 kg 53 1 lb Excluded Toner and Drum Carton Approx 30 6 kg 67 5 lb Included Toner Drum and Carton 1 NOTE...

Page 21: ...I DLC LLC Management Web Based Management BRAdmin Professional Windows based management utility Web BRAdmin Server Software Firmware update 4MB flash ROM Use BRAdmin Professional when upgrading print server software or FTP TFTP PUT GET or IPX for Netware Supplied software BRAdmin Professional management utility for Windows 95 98 NT 4 0 2000 XP Port driver for Windows 95 98 Me NT 4 0 2000 XP LPR po...

Page 22: ...m 2 16 28 lbs DX 60 105 g m 2 16 28 lbs MX 60 105 g m 2 16 28 lbs Select the media type from the printer driver Plain paper 9 9 9 9 9 Plain paper Thin paper 9 9 9 9 9 Thin paper Recycled paper 9 9 9 9 9 Plain paper Bond paper 9 9 9 9 Bond paper Thick paper 9 Thick paper or thicker paper Transparency 9 Only A4 or Letter size Transparency Labels 9 Only A4 or Letter size Thick paper Envelope 9 Envelo...

Page 23: ... 80 g m 2 or 20 lbs 100 sheets 80 g m 2 or 20 lbs Transparencies 10 sheets Envelopes 10 sheets Label stock 10 sheets 500 sheets 80 g m 2 or 20 lbs 100 sheets per bin 80 g m 2 or 20 lbs 3 Other paper specifications Paper Tray Cut sheet Basis weight 60 to 105 g m 2 16 to 28 lb Caliper 0 08 to 0 13 mm 0 003 to 0 005 in Moisture content 4 to 6 by weight MP Tray Cut sheet Envelope Basis weight 60 to 20...

Page 24: ...e following technical specifications Basis Wait 75 90 g m 2 Thickness 80 110 micrometer Roughness Higher than 20 sec Stiffness 90 150 cm 3 100 Grain Direction Long Grain Volume Resistivity 10e 9 10 e 11 ohm Surface Resistivity 10e 10 10 e 12 ohm cm Filler CaCO3 Neutral Ash Content below 23 wt Brightness higher than 80 Opacity higher than 85 As a general guidance paper that is suitable for a photoc...

Page 25: ...els with the carrier sheet exposed or the printer will be damaged Before loading paper with holes such as organizer sheets be sure to fan the stack well Do not use organizer sheets that are stuck together The glue that is used might cause damage to the printer When printing on the back of pre printed paper if the paper is curled be sure to straighten the paper as much as possible Different types o...

Page 26: ...s Plain paper 9 9 70g m 2 to 90 g m 2 19 to 24Ib Thin paper 9 9 60g m 2 to 70 g m 2 16 to 19Ib Recycled paper 9 9 Bond paper 9 9 Rough paper 60g m 2 to 200 g m 2 16 to 53Ib Thick paper 9 9 90g m 2 to 120 g m 2 24 to 32Ib Thicker paper 9 9 120g m 2 to 200 g m 2 32 to 53Ib Transparency 9 9 Overhead projector film Labels 9 Envelope 9 Card stock 9 ...

Page 27: ...HL 7050 SERVICE MANUAL 1 13 3 7 Printable Area 3 7 1 PCL5e EPSON IBM emulation The figure below shows the printable area each emulation guarantees when printing on Portrait and Landscape ...

Page 28: ...4 dots Ç 0 mm 4 2 mm 0 16 50 dots B 5 JIS 182 0 mm 7 1 2 130 dots 257 0 mm 10 11 3 033 dots 170 0 mm 6 69 2 007 dots 257 0 mm 10 11 3 033 dots Ç 0 mm 4 2 mm 0 16 50 dots B 5 ISO 176 0 mm 6 93 2 078 dots 250 0 mm 9 84 2 952 dots 164 0 mm 6 46 1 936 dots 250 0 mm 9 84 2 952 dots Ç 0 mm 4 2 mm 0 16 50 dots B 6 125 0 mm 4 92 1 476 dots 176 0 mm 6 93 2 078 dots 164 0 mm 4 44 1 334 dots 176 0 mm 6 93 2 ...

Page 29: ...HL 7050 SERVICE MANUAL 1 15 ...

Page 30: ... 3 033 dots 182 0 mm 7 1 2 130 dots 247 0 mm 9 72 2 916 dots 182 0 mm 7 1 2 130 dots Ç 0 mm 4 2 mm 0 16 50 dots B 5 ISO 250 0 mm 9 84 2 952 dots 176 0 mm 6 93 2 078 dots 240 0 mm 9 44 2 834 dots 176 0 mm 6 93 2 078 dots Ç 0 mm 4 2 mm 0 16 50 dots B 6 176 0 mm 6 93 2 078 dots 125 0 mm 4 92 1 476 dots 166 4 mm 6 55 1 960 dots 125 0 mm 4 92 1 476 dots Ç 0 mm 4 2 mm 0 16 50 dots COM10 241 3 mm 9 5 2 8...

Page 31: ...32 5 C The relative humidity is maintained between 20 and 80 The printer should be used in a well ventilated room Place the printer on a flat horizontal surface Keep the printer clean Do not place the printer in a dusty place Do not place the printer where the ventilation hole of the printer is blocked Keep approximately 100 mm 4 inches between the ventilation hole and the wall Do not place the pr...

Page 32: ... Brother Printing Solution for Windows Operating system Computer Processor Memory Windows 95 486DX 66MHz or higher processor 24MB Windows 98 Pentium 150MHz or higher processor 32MB Windows Me Pentium 150MHz or higher processor 32MB Windows NT 4 0 Pentium 150MHz or higher processor 24MB Windows 2000 Pentium 133MHz or higher processor 64MB Windows XP Pentium 300MHz or higher processor 128MB ...

Page 33: ...king the printer check to see that all of the following components are included in the carton Fig 2 1 NOTE Components may vary depending on the country Printer CD ROM Setup Guide Paper Cassette Drum Unit Assembly Drum Unit with Toner Cartridge AC cord ...

Page 34: ...er installation are contained on the supplied CD ROM 3 1 For All Users For Windows Users 1 Turn on the PC power Close all the applications running on the PC 2 Insert the supplied CD ROM into the CD ROM drive 3 The opening screen will appear automatically NOTE If the opening screen does not appear click Start and select Run enter the CD drive letter and type START EXE for example D START EXE 4 Sele...

Page 35: ...r of the printer 4 Pull out the paper tray and then remove the tape Fig 2 2 5 Put the paper tray back into the printer 3 1 2 Install the drum unit assembly 1 Open the top cover of the printer Fig 2 3 2 Unpack the drum unit assembly Remove the protective part Fig 2 4 3 Rock it from side to side 5 or 6 times to distribute the toner evenly inside the assembly Fig 2 5 ...

Page 36: ...2 6 5 Close the top cover of the printer Fig 2 7 3 1 3 Load paper in the paper tray 1 Pull the paper tray out of the printer 2 While pressing the paper guide release lever slide the adjusters to fit the paper width size Check that they fit correctly into the slots Fig 2 8 Paper guide release lever ...

Page 37: ...the universal guide release button and pull out the rear of the paper tray Fig 2 9 3 Load paper in the paper tray Check that the paper is flat in the tray and below the maximum paper mark 4 Put the paper tray back into the printer Universal guide release button ...

Page 38: ...rinted correctly NOTE This function cannot be used if data is sent from PC after connecting the interface cable 3 2 For Parallel Interface Cable Users for Windows users only Follow the steps below only after completing steps 3 1 1 through to 3 1 4 above Connect the printer to your PC Install the printer driver 1 Turn off the printer power switch 2 Connect the parallel interface cable to your PC an...

Page 39: ... Click Install Software icon on the Menu screen Fig 2 11 6 Click Printer Driver Fig 2 12 7 Click the Next button Follow the instructions on the screen Fig 2 13 8 Select Standard Installation and then click the Next button Fig 2 14 ...

Page 40: ...ON 2 10 9 Select Local Printer and then click the Next button Fig 2 15 10 Select the port where your printer is connected and then click the Next button Fig 2 16 11 Click the Finish button to restart your PC Fig 2 17 The Setup is now complete ...

Page 41: ...drive The opening screen will appear automatically Follow the instructions on the screen 3 Click the Install Software icon on the Menu screen 4 Click Printer Driver 5 Click the Next button Follow the instructions on the screen 6 Select Standard Installation and then click the Next button 7 Select Local Printer with USB cable and then click the Next button 8 When this screen appears make sure the p...

Page 42: ... USB interface cable to your Macintosh and then connect it to the printer NOTE Do not connect the USB cable to the keyboard USB Port or a non powered USB Hub 3 Put the CD ROM into your CD ROM drive 4 Double click the Start Here Icon Follow the instructions on the screen 5 Click the Install Software icon on the Menu screen Follow the instructions on the screen 6 Open the Macintosh HD icon 7 For Mac...

Page 43: ...s on 2 Connect the USB interface cable to your Macintosh and then connect it to the printer NOTE Do not connect the USB cable to the keyboard USB Port or a non powered USB Hub 3 Insert the CD ROM into your CD ROM drive Open the Mac OS X folder 4 Double click the PPD_Installer pkg icon Follow the instructions on the screen 5 Open the Macintosh HD icon 6 Open the Applications folder Open the Utiliti...

Page 44: ...creen will appear automatically Follow the instructions on the screen 2 Click the Install Software icon on the Menu screen 3 Follow the instructions on the screen Click the BRAdmin Professional NOTE The default password for the print server is access You can use the BRAdmin Professional software or a web browser to change this password Driver Development Wizard Useful utility for peer to peer user...

Page 45: ... opening screen will appear automatically Follow the instructions on the screen 5 Click Install Software icon on the Menu screen 6 Click Printer Driver 7 Click the Next button Follow the instructions on the screen 8 Select Standard Installation and then click the Next button For Network shared printer users 1 Select the Network Shared Printer and then click the Next button 2 Select your printer s ...

Page 46: ...eer network printer users LPR recommended Peer to Peer printing method 1 Select Brother Peer to Peer Network Printer and then click the Next button 2 Select Search from a list of available printers or enter your printer IP address Click the Next button Fig 2 22 Fig 2 23 ...

Page 47: ...Me users After your PC has restarted setup will be complete 3 4 3 Installing the driver for Macintosh users only Connect the printer to your Macintosh install the BR Script PPD file 1 Turn off the printer power switch 2 Connect the network interface cable to the printer and then connect it to a free port on your hub 3 Turn on the printer power switch For Mac OS 8 6 to 9 2 Users 1 Put the CD ROM in...

Page 48: ...the instruction on the screen 3 Open the Macintosh HD icon 4 Open the Applications folder Open the Utilities folder 5 Open the Print Center icon 6 Click the Add Printer button 7 Select Apple Talk 8 Select BRN_xxxxxx_P1_AT and then click the Add button xxxxxx are the last six digits of the Ethernet address 9 Select Quit Printer Center from the Printer Center menu The setup is now complete ...

Page 49: ...y For the details on paper tray loading refer to subsection 3 1 3 Load paper in the paper tray in this chapter and subsection 3 6 Paper in CHAPTER 1 NOTE If the paper is misfed or multi pages frequently feed at once when printing on small size paper or thick paper change the paper thickness switches on the floor of the paper tray using a coin pushing down the plate of the tray as follows Fig 2 25 ...

Page 50: ...aper thick paper transparency labels envelope and card stock can be fed into the MP tray For details on feedable paper see subsection 3 6 Paper in CHAPTER 1 NOTE For correct printing select the same paper size from within the software application as the paper in the tray If the application software does not support paper size selection in its print menu the paper size can be changed on the printer...

Page 51: ...size When printing on special paper such as envelopes thick paper labels and so on open the face up output tray to print face up See Printing on Envelopes or Printing on Label Transparency etc in this chapter Fig 2 30 NOTE When placing paper on the MP tray note the following When printing the inside tray automatically rises to feed paper into the printer The print surface must be face up Insert th...

Page 52: ... a pile Envelopes constructed with paper that exceeds the paper weight specifications for the printer Poorly manufactured envelopes with edges that are not straight or consistently square Envelopes with transparent windows holes cutouts or perforations NOTE Before printing envelopes fan the stack well to avoid paper jams and misfeeds Do not load different types of paper at the same time in the pap...

Page 53: ... 23 2 Pull out the MP tray support flap Fig 2 32 3 Open the face up output tray Fig 2 33 4 Pull out the face up output tray support if necessary Fig 2 34 5 Push down the two blue tabs at the left and right hand sides Fig 2 35 ...

Page 54: ...Place the envelopes in the MP tray so they touch the back of the tray and remain below the limit mark Fig 2 36 7 Press and slide the paper width adjuster to fit the envelope size Fig 2 37 8 Change the settings in the printer driver PCL driver Fig 2 38 ...

Page 55: ...osition When printing the inside tray automatically rises to feed paper into the printer If envelopes get smudged during printing set the print density to a higher value in the QUALITY mode with the control panel setting for darker printouts To adjust the print density setting see subsection 5 5 3 Quality in this chapter Envelope joints that are sealed by the manufacturer should be secure All side...

Page 56: ...nvelopes lies with the customer 4 4 Printing on Label Transparency etc Use of any of the types of paper listed below may cause damage to your printer Such damage is not covered under any warranty or service agreement NOTE Before using paper with holes such as organizer sheets fan the stack well to avoid paper jams and misfeeds Do not use paper with perforations at the edges Do not place the punch ...

Page 57: ...he face up output tray extension Fig 2 44 5 When loading paper in the MP tray make sure it touches the back of the tray and remains below the limit mark Fig 2 45 NOTE Make sure that the neatly stacked paper is correctly seated on the MP tray otherwise paper may not be fed correctly resulting in a skewed printout or a paper jam ...

Page 58: ... been printed because they are very HOT NOTE When placing paper in the MP tray note the following When printing the inside tray automatically rises to feed paper into the printer The print surface must be face up The leading edge Top of the paper must be placed inside first so it rests lightly against the printer The top of the paper stack must be under the guides that are on both sides of tray ...

Page 59: ...HL 7050 SERVICE MANUAL 2 29 7 Change the settings in the printer driver Fig 2 47 Fig 2 48 Fig 2 49 ...

Page 60: ... 4 After the printer ejects all the printed pages remove them and close the face up output tray 4 6 Manual Feed If paper is placed in the MP tray when the setting MANUAL FEED ON has been set in PAPER mode using the control panel the printer will load paper only from the MP tray NOTE When feeding paper manually note the following If the application software supports a manual feed selection in the p...

Page 61: ... several functions in the printer The display also shows the current printer status When you use the control panel buttons the display will change Fig 2 52 5 1 Data LED Indications The Data LED indicates with orange lamp the current status of the printer LED Printer status On Data remains in the printer buffer Blinking Receiving or processing data Off No remaining data Data LED LCD display ...

Page 62: ...ions can be changed from the current status MENU ERROR and REPRINT settings by pressing the Go button once For ERROR indications the panel changes only when the error is cleared Printing can be paused with the Go button Pressing the Go button again restarts the print job and clears the PAUSE During PAUSE the printer is in the off line state NOTE If you do not wish to print the remaining data when ...

Page 63: ...SETUP mode ii The default RAM size is 0MB Press the button to increase the reprint RAM size in increments of 1MB steps NOTE When increasing the RAM size to use for secure printing the work area of the printer is decreased and the printer performance will be reduced Ensure to reset the RAMDISK SIZE to 0MB when secure printing has finished being used When data is stored in RAM the data is deleted wh...

Page 64: ...ontrol panel 2 Press the Reprint button NOTE If you press the Go button the printer will exit from the reprint menu If you want to reprint the data and have pressed the Go button the display shows PRESS SET TO PRINT Press the Set button to start reprinting or press the Go button to cancel the reprint job If you wait too long to continue the button panel operation the display exits the REPRINT menu...

Page 65: ...e password protected and anyone can access them using the front panel or a web browser The printer will not print a PUBLIC document when you send it to the printer You must use the control panel of the printer or connect to the printer through a web browser PUBLIC data can be deleted using the control panel of the printer or from the web based management software When you reprint PUBLIC data refer...

Page 66: ...set the user name Press the or button to select the job Press the Set button to set the job Input your password Press the Set button to set the password Press the Set button or Reprint button If you press the Go button the display shows PRESS SET TO PRINT The printer will exit this menu after a timeout period Press or Press Set button If there is no data NO DATA STORED REPRINT LAST JOB REPRINT SEC...

Page 67: ...ess the Set button 5 2 5 Set button If you press the Set button when the printer is in the on line state READY it goes off line and the LCD goes to the menu display Pressing the Set button allows you to set the selected menu or number After changing the menu or the number an asterisk appears briefly on the right hand side of the message 5 2 6 Back button If you press the Back button when the print...

Page 68: ... information about these messages see CHAPTER 6 TROUBLESHOOTING 5 3 1 Backlights The backlight of the LCD shows the current printer status with the different colors and the light indications on off and blinking Light indication Meaning Off The printer is off line or in sleep status Ready to print Printing Green General Warming up Red Error Some problem has occurred at the printer Selecting menu Se...

Page 69: ... returns to the factory setting FAX SENDING Sending fax data Fax function see Brother Solutions Center http solutions brother com FAX RECEIVING Receiving fax data Fax function see Brother Solutions Center http solutions brother com 5 4 How to Use the Control Panel The followings are the basic steps when operating the menu buttons Set and Back If no control panel operation is performed for 30 secon...

Page 70: ...Set or Back to set the printer off line Press the or button Press the Set button An asterisk briefly appears at the end of the display The default setting is indicated by an Press the or button to scroll forward or backward through the menus PAPER SOURCE Press the Set button to proceed to the next menu level PAPER PRIORITY PRIORITY MP TI T2 T3 T4 PRIORITY MP T4 T3 T2 T1 PRIORITY MP T4 T3 T2 T1 Pre...

Page 71: ...ubsection 5 5 2 PAPER in this Chapter QUALITY For more information see subsection 5 5 3 QUALITY in this Chapter SETUP For more information see subsection 5 5 4 SET UP in this Chapter PRINT MENU For more information see subsection 5 5 5 PRINT MENU in this Chapter NETWORK For more information see subsection 5 5 6 NETWORK in this Chapter INTERFACE For more information see subsection 5 5 7 INTERFACE t...

Page 72: ... ROM date NET VER Shows Network version only Network users NET DATE Shows Network build date only Network users VERSION RAM SIZE MB Shows the size of memory in this printer PAGE COUNTER Shows the current total printed pages DRUM COUNT Shows the pages printed with drum unit REMAIN DRUM Shows the pages left to print with drum unit REMAIN PF KIT MP Shows the pages left to print with PF kit MP REMAIN ...

Page 73: ...DUPLEX OFF ON LONG BIND ON SHORT BIND Select whether you want to automatically print on both sides of the paper OUTPUT STANDARD MAILBOX1 10 MX STACK MX SORT Select where you want the printed pages to go MP TRAY Multi purpose tray TRAY1 Upper paper tray TRAY2 3 4 Optional lower tray 5 5 3 Quality D D Di iis s sp p pl lla a ay y y S S Sh h ho o ow w ws s s D D De e es s sc c cr r ri iip p pt t ti ii...

Page 74: ...ls of 0 1 0 2 0 3 0 4 0 5 1 0 1 5 or 2 0 seconds The factory setting is 0 1 PANEL CONTROL MESSAGE SCROLL Set the time in seconds that an LCD message will scroll across the display From Level 1 0 2 to level 10 2 0 The factory setting is Level 1 POWER SAVE TIME 1MIN 240MIN TONER LOW CONTINUE STOP CONT Continue printing even if there is a TONER LOW error STOP Stop printing if there is a TONER LOW err...

Page 75: ...t t ti iin n ng g g D D De e es s sc c cr r ri iip p pt t ti iio o on n n SECURE FILE Select the user name job name and password PUBLIC FILE Select the user name and job name PROOF FILE Select the user name and job name DATA ID HD DATA ID CF MACRO ID HD MACRO ID CF FONT ID HD FONT ID CF FORMAT HD OK DELETE STORAGE FORMAT CF OK TIME STYLE YY MM DD or MM DD YY or DD MM YY DISPLAY YYYY MM DD HH MM YE...

Page 76: ...can print pages in portrait or landscape orientation ORIENTATION PORTRAIT or LANDSCAPE This printer can be adjusted to align the page format S S Su u ub b bs s se e et t tt t ti iin n ng g g D D De e es s sc c cr r ri iip p pt t ti iio o on n n X OFFSET 0 500 500 Move the print start position at the top left corner of pages horizontally up to 500 left to 500 right dots in 300 dpi PRINT POSITION Y ...

Page 77: ...her a line feed and carriage return will happen when the printer reaches the right margin AUTO SKIP ON OFF Select whether a line feed and carriage return will happen when the printer position reaches the bottom margin LEFT MARGIN Set the left margin at column 0 to 70 columns at 10 cpi RIGHT MARGIN Set the right margin at column 10 to 80 columns at 10 cpi TOP MARGIN Set the top margin at a distance...

Page 78: ...set TABLE PRINT Print code table AUTO LF OFF ON ON CR CR LF OFF CR CR AUTO MASK OFF ON LEFT MARGIN Set the left margin at column 0 to 70 columns at 10 cpi RIGHT MARGIN Set the right margin at column 10 to 80 columns at 10 cpi TOP MARGIN Set the top margin at a distance from the top edge of the paper 0 0 33 0 5 1 0 1 5 or 2 0 The factory setting is 0 33 BOTTOM MARGIN Set the bottom margin at a dist...

Page 79: ...IGHT MARGIN Set the right margin at column 10 to 80 columns at 10 cpi TOP MARGIN Set the top margin at a distance from the top edge of the paper 0 0 33 0 5 1 0 1 5 or 2 0 The factory setting is 0 33 BOTTOM MARGIN Set the bottom margin at a distance from the bottom edge of the paper 0 0 33 0 5 1 0 1 5 or 2 0 The factory setting is 0 33 IBM PROPRINTER LINES Set the number of lines on each page from ...

Page 80: ... bs s se e et t tt t ti iin n ng g g D D De e es s sc c cr r ri iip p pt t ti iio o on n n TCP IP ENABLE ON OFF IP ADDRESS SUBNET MASK GATEWAY IP BOOT TRIES TCP IP IP METHOD AUTO STATIC RARP BOOTP DHCP NETWARE ENABLE ON OFF NETWARE NET FRAME AUTO 8023 ENET 8022 SNAP APPLETALK ON OFF NETBEUI ON OFF DLC LLC ON OFF BANYAN ON OFF LAT ON OFF NETBIOS IP ON OFF APIPA ON OFF ENET AUTO 100B FD 100B HD 10B ...

Page 81: ... time out period for the auto interface selection INPUT BUFFER Level1 15 Increase or decrease the input buffer capacity RESTART PRINTER When using the parallel interface S S Su u ub b b s s se e et t tt t ti iin n ng g g M M Me e en n nu u u D D De e es s sc c cr r ri iip p pt t ti iio o on n n HIGH SPEED ON OFF Turns high speed parallel communications on or off PARALLEL BI DIR ON OFF Turns bi dir...

Page 82: ... can be set to NONE ODD or EVEN STOP BIT 1 BITS 2 BITS The data separator can be set to 1 or 2 stop bits XON XOFF ON OFF Handshake protocol can be set to on or off DTR ER ON OFF ROBUST XON OFF ON RING DELAY 0 1 2 3 4 REDUCTION AUTO OFF 90 RAM SIZE 1 MBYTE RECEIVE ON OFF RS 232C INTERVAL OFF 6H 12H 24H 2D 4D 7D 5 5 8 Reset menu D D Di iis s sp p pl lla a ay y y S S Sh h ho o ow w ws s s D D De e es...

Page 83: ...appears Press the Set button Press the button Press the Set button MENU INFORMATION SETUP DATE TIME DATE TIME YEAR YEAR 1999 YEAR 2000 YEAR 2000 DATE TIME YEAR DATE TIME MONTH DATE TIME 2000 04 25 10 22 Press the Set button Press the Set button After short time the display changes Press the Set button ...

Page 84: ... the Set button to complete the IP address An asterisk appears at the end of the display MENU NETWORK Press the button NETWORK TCP IP TCP IP TCP IP ENABLE TCP IP IP ADDRESS IP ADDRESS 192 0 0 192 IP ADDRESS 123 0 0 192 IP ADDRESS 123 45 67 89 IP ADDRESS 123 45 67 89 Press the button Press the Set button Press the Set button Repeat this process until you have set your IP address Press the Set butto...

Page 85: ...s Incorporated PostScript Language Program Design Menlo Park Addison Wesley Publishing Company Inc 1988 Adobe Systems Incorporated PostScript Language Reference Manual Menlo Park Addison Wesley Publishing Company Inc 1985 Adobe Systems Incorporated PostScript Language Tutorial and Cookbook Menlo Park Addison Wesley Publishing Company Inc 1985 Adobe Systems Incorporated PostScript Language Referenc...

Page 86: ...etting is always restored to the factory setting when the printer is turned off and on again It is not possible to reset the network settings using the control panel If you want to reset the print server to its factory settings resetting all information such as the password and IP address information hold down the Network Test button on the Network board NC 4100h for more than 5 seconds M M Me e e...

Page 87: ...t ti iin n ng g g LANGUAGE ENGLISH PANEL CONTROL LOWER LCD NONE LCD DENSITY 1 AUTO ONLINE ON BUTTON REPEAT 0 1 SEC MESSAGE SCROLL LEVEL 1 LCD Density 1 POWER SAVE TIME 30MIN TONER LOW CONTINUE AUTO CONTINUE OFF LOCK PANEL OFF REPRINT ON PAGE PROTECTION AUTO EMULATION AUTO EPSON KEEP PCL OFF RAMDISK SIZE 0MB SETUP TIME STYLE YY MM DD hh mm ...

Page 88: ...c ct t to o or r ry y y s s se e et t tt t ti iin n ng g g MEDIA TYPE PLAIN PAPER PAPER A4 LETTER COPIES 1 ORIENTATION PORTRAIT PRINT POSITION X OFFSET 0 Y OFFSET 0 AUTO FF TIME 5 FF SUPPRESS OFF FONT NO 59 FONT PITCH 10 00 12 00 SYMBOL SET PC8 AUTO LF OFF AUTO CR OFF AUTO WRAP OFF PRINT MENU HP LASERJET AUTO SKIP ON ...

Page 89: ...ontinued LINES FONT NO 59 FONT PITCH POINT 10 00 12 00 SYMBOL CHARACTER SET US ASCIF AUTO LF OFF AUTO MASK OFF LEFT MARGIN RIGHT MARGIN TOP MARGIN BOTTOM MARGIN EPSON FX 850 LINES FONT NO 59 FONT PITCH 10 00 12 00 SYMBOL SET PC8 AUTO LF OFF AUTO CR OFF LEFT MARGIN RIGHT MARGIN TOP MARGIN BOTTOM MARGIN IBM PROPRINTER LINES CHAR SET STD CHAR SET ALT PEN SIZE HP GL PEN GRAY PRINT MENU continued BR SC...

Page 90: ...UBNET MASK 0 0 0 0 GATEWAY 0 0 0 0 IP BOOT TRIES 3 TCP IP IP METHOD AUTO NETWARE ENABLE ON NETWARE NET FRAME AUTO APPLETALK ON NETBEUI ON DLC LLC ON BANYAN ON LAT ON NETBIOS IP ON APIPA OFF NETWORK ENET AUTO SELECT AUTO AUTO IF TIME 5 INPUT BUFFER LEVEL 3 HIGH SPEED ON PARALLEL BI DIR ON FAX MODE OFF BAUD RATE 9600 CODE TYPE 8 BITS PARITY NONE STOP BIT 1 BITS X ON X OFF ON DTR ER ON INTERFACE RS 2...

Page 91: ...L 2 61 M M MO O OD D DE E E M M ME E EN N NU U U F F Fa a ac c ct t to o or r ry y y S S Se e et t tt t ti iin n ng g g RING DELAY 0 REDUCTION AUTO RAM SIZE 1MB RECEIVE ON INTERFACE continued RS 232C continued INTERVAL OFF ...

Page 92: ...ngine has cooled down The fan running time varies depending on the sleep mode timeout because the fan running conditions are defined as follows 1 The fan runs for 10 minutes whenever printing finishes 2 The fan runs while the printer is in ready status 3 The fan runs for at least 5 minutes after the printer goes into sleep mode EX If the timeout is 5 minutes the fan will be running for 5 minutes a...

Page 93: ...printing software for the administrator are included For more information about set up see section 3 INSTALL THE PRINTER in this chapter 6 1 Installing the Network Board 1 Turn off the printer power and then unplug the power cord Disconnect the interface cable printer cable from the printer 2 Open the side cover Fig 2 53 3 Loosen the three screws and then remove the metal plate by lifting up sligh...

Page 94: ...crews Fig 2 56 6 Secure the metal plate with the three screws Fig 2 57 7 Close the side cover 8 Connect one end of the Ethernet Cable to the network port of the printer 9 Plug the power cord into the AC outlet and then turn on the power switch Print configuration page Press the network test button for less than 5 seconds to print a configuration page Network port Fig 2 58 ...

Page 95: ... is connected to a 100BaseTX Fast Ethernet network It is off if the print server is connected to a 10BaseT network A LED Green Transmission activity This LED will blink as the print server receives or transmits data 6 2 2 Factory default setting If you wish to reset the print server back to its default factory settings resetting all information such as the password and IP address information hold ...

Page 96: ...n Compact Flash Network Board NC 4100h Control panel IMAGE FORMATION SYSTEM Cleaning unit Photosensitive drum Developing unit Laser unit LASER SYSTEM Transfer separation unit Delivery rollers Fixing unit Feeder Tray 1 Tray 2 Option Tray 3 Option Tray 4 Option MP tray Main PCB CONTROL SYSTEM Engine PCB PAPER PICK UP FEED SYSTEM Optional Standard for HL 7050N External Device Serial Parallel USB Fig ...

Page 97: ...rm the following functions Receive the printing data from the computer Convert the received data to the bitmap data such as characters or graphics Control the engine and send the generated bitmap data as a video signal The control panel is controlled by communicating with the engine CPU to display LCD messages light the LEDs and display the button status etc The power for the Main PCB is supplied ...

Page 98: ...BUS HCT245 Address BUS 5v COMPACT FLASH Data BUS COMPACT HCT245 5v FLASH Pclk Sdin Sdout PANEL 12v 12v ADM202 5v LASER RS 232C I F ENB 5v 5v ENGINE I F Video BD LDHALF CAL Resetn Cmdn Stsn Cclk Vsreqn Vsyncn Topn Eifrstn Scanclk RDY BD CPU TXPR4955 266 ASIC MB87F4562 SDRAM 128M x2 32MB MASK ROM 128M or 64Mx2 16MB Flash ROM 8M x2 2MB DIMM 100pin 2slots 256MB MAX Gate Array S1L50992F21A200 BRnet BOA...

Page 99: ...s controlled by the DMA controller It is applicable to both normal receiving and bi directional communication nibble mode byte mode ECP mode 2 Sores the data received from the PC into DRAM as controlled by the DMA controller The transmission speed is 12 Mbps 3 Compatible with PCI bus of 33 MHz clock speed 3 Gate Array block Model name S1L50992F21A200 manufactured by Epson Appearance 160 pin QFP Fu...

Page 100: ...type SDRAM Access time CL2 PC66 Parity Either parity or non parity can be used Memory capacity 16MB 32MB 64MB 128MB Recommended DIMM type 16MB Techworks PM HP 16M 32MB Techworks PM HP 32M 64MB Techworks PM HP 64M 128MB Techworks PM HP 128M Any combination of DIMM size can be installed into any slot in any order but it is recommended that the larger DIMM is installed in Slot 1 PM HP 16M is installe...

Page 101: ...on clutch Fuser exit sensor High voltage power supply Eject sensor Release motor Paper size sensor Release home position sensor Tray ID sensor Developer clutch Feeder clutch For the entire circuit diagram of the engine PCB see APPENDIX 11 to 13 ENGINE PCB CIRCUIT DIAGRAM HL 7050 1 4 Power Supply 1 4 1 Low voltage power supply The power supply uses a switching regulation system to generate the regu...

Page 102: ...mer Control Circuit Feedback Circuit Sleep Control Overvoltage Detector CN102 CN106 CN103 CN104 CN105 CN101 5V 3 3V 24V GND GND GND GND GND SICLK GND SIDATA 24V OP_RESETN GND SLEEP HEAT1 HEAT2 5V SICLK DX_ON SIDATA OP_RESETN SICLK RESERVE SIDATA 24V OP_RESETN N C SICLK DX_ON SIDATA 24V OP_RESETN L N INLET Chopper F301 Chopper LVPS_block eps Fig 3 2 ...

Page 103: ...ly Roller Photosensitive Drum Development Roller Corona Unit Current Regulator Current Regulator Voltage Regulator Voltage Regulator B1 B70 VR70 B100 B151 Voltage Regulator Voltage Regulator Z50 VR50 VR151 B201 Voltage Regulator VR201 VR1 24V 11 10HG 4 DEV 5 6 7 8 1TRCVB TRCCFB TRCCC 1TRCCF 9 10 GND 12 GND 13 Ver 1 GND 2 GND 3 GND VR100 Voltage Regulator VR60 Cleaning Roller1 Cleaning Roller2 HVPS...

Page 104: ...Cleaner roller Eject pressure roller F Eject roller A Rear cover PAPER CASSETTE FIXING UNIT MP tray Paper feed roller ASSY 45 PE sensor actuator Regist actuator Paper Tip actuator Paper actuator Eject roller ASSY 2 Eject pressure roller R Pressure roller 35 Paper feed roller TR Pinch roller TR Paper feed roller A4 Pinch roller A4 Pinch roller MP Paper feed roller MP Paper feed roller MP Regist rol...

Page 105: ...or Paper Size Tray ID Sensor Regist Sensor Face Up Tray Open Sensor Stuck Full Sensor Fuser Exit Sensor Feeder Clutch Eject Sensor Low Voltage Power Supply PCB Fixing Unit Halogen Heater Lamp High Voltage Power Supply PCB Transfer Roller Toner Cartridge Tonor Sensor Primary Charging Roller Development Roller Network Board Cover Open Sensor Registration Clutch Developer Clutch Toner LED Toner Senso...

Page 106: ...on or absence of paper is detected by sensing the motion of the lever 2 2 2 Paper registration After the paper top position is detected by the regist front actuator the paper separated into individual sheets by the paper feed roller A is fed further for a specified time and the paper top position reaches the regist roller so that the paper skew is adjusted Then the solenoid is turned off the regis...

Page 107: ...rst eject roller A in the fixing unit The FU actuator detects whether the paper is ejected correctly or not After the paper exits from the eject roller A the paper is directed by the back cover and ejected face down into the top output tray through the eject roller B If the back cover is open the paper is ejected face up straight to the back of the printer Fig 3 8 Eject roller A Eject pinch roller...

Page 108: ...s 2 3 1 Cover open sensor Detects opening and closing of the front cover Fig 3 9 2 3 2 Multi paper tray paper empty sensor Detects if there is paper in the MP tray Fig 3 10 Cover open sensor Multi paper tray paper empty sensor MP tray unit ...

Page 109: ...ere is paper in the paper tray Fig 3 11 2 3 4 Face up open sensor Fuser exit sensor Detects opening and closing of the back cover It also detects if there is any jammed paper in the fixing unit Fig 3 12 Tray paper empty sensor Face up open senor Fuser exit sensor Paper eject unit ...

Page 110: ... Full stack sensor Detects if paper that is output onto the face down output tray exceeds 500 For normal 80g m 2 paper Fig 3 13 2 3 6 Eject sensor Detects if paper is ejected from the fixing unit Fig 3 14 Full stack sensor Eject sensor ...

Page 111: ...the toner cartridge The toner sensor on the left side emits light through the window on the left side of the toner cartridge then the toner sensor on the right side receives it when the toner is low They also detect whether or not the drum unit is installed The toner cartridge is installed in the drum unit Fig 3 16 Paper size sensor Tray ID sensor Toner sensor Light reception Toner sensor Light em...

Page 112: ...1 Corona wire Generates the ion charge on the drum 2 Grid Spreads the ion charge evenly over the drum surface 2 4 3 Transfer roller Transfers the toner image to the paper from the drum surface 2 4 4 Cleaner Removes the toner and the paper dust or dirt on the surface of the photosensitive drum 2 5 Toner Cartridge Develops the electrostatic latent image on the photosensitive drum with toner and form...

Page 113: ... aluminum drum sleeve in the photosensitive drum is 100V Fig 3 17 The primary charge uses a corona wire but since the drum is positively charged only less than 1 10 of the usual quantity of ozone is generated compared with the negatively charged drum The level of ozone expelled from the printer is therefore not harmful to the human body Applicable safety standards have been complied with 2 6 2 Exp...

Page 114: ...ential of the exposed area is reduced forming the electrostatic image to be printed 1 Cycle of drum Surface Protential V 950 500 200 1 2 3 a b Time 1 2 3 Primary charging Laser beam exposure and developing a Unexposed area Non image area b Exposed area Transfer the image to appear Drum Sleeve 100 Fig 3 19 ...

Page 115: ...ctrostatic potential to attract toner particles from the development roller to the latent image area on the drum surface Fig 3 20 2 6 4 Transfer 1 Transfer process After the drum has been charged and exposed and has received a developed image the toner formed is transferred onto the paper by applying a negative charge to the back of the paper The negative charge applied to the paper causes the pos...

Page 116: ...he drum unit Fig 3 21 2 6 6 Fixing stage The image transferred to the paper by static electricity is fixed by heat and pressure when passing through the heat roller and the pressure roller in the fixing unit The heat roller of the fixing unit is heated by two heaters two halogen lamps One of the heaters center heater mainly heats the central part of the heat roller and the other heater side heater...

Page 117: ...APTER 3 THEORY OF OPERATION 3 22 1 Longitudinal cross section of heat roller Fig 3 23 2 Longitudinal power distribution of heaters Fig 3 24 Gear Center thermistor Side thermistor Side heater Center heater ...

Page 118: ... irons or other heat generating tools take care not to accidentally damage parts such as wires PCBs and covers 4 Before handling any PCBs touch a metal portion of the equipment to discharge any static electricity charge on your body or the electronic parts or components may be damaged 5 When transporting PCBs be sure to wrap them in the correct protective packaging 6 Be sure to replace self tappin...

Page 119: ... 6 SW PANEL 087310816 Taptite cup B M3x6 5 Panel rear cover LCD holder 0 4 0 1 4 1 1 0 Min 0 2 2 0 087320816 Taptite cup S M3x8 1 Switch panel unit 0 8 0 1 8 2 1 0 Min 0 4 4 1 087311016 Taptite cup B M3x10 2 Panel holder 0 8 0 1 8 2 1 0 Min 0 3 3 1 087311016 Taptite cup B M3x10 1 Switch panel unit 0 5 0 1 5 1 1 0 Min 0 2 2 0 PAPER EJECT 087310815 Taptite cup B M3x8 1 Rear tray sensor 0 7 0 1 7 1 1...

Page 120: ...ide LF LR RF RR 0 9 0 1 9 2 1 0 Min 0 3 3 1 087320616 Taptite cup S M3x6 63 Front plate1 4 Bottom plate 8 Fan holder 2 Lock plate 4 Stiffner plate 6 Paper feed guide1 4 Scanner plate 8 Power supply plate 8 Drive release holder 2 Ejection gear plate 4 Rear senso 1 Left side PCB assy 2 Ozone duct 2 Sub duct 3 Electrode 1 Release sensor 1 Size SW PCB 1 Front plate 2 2 0 8 0 1 8 2 1 0 Min 0 3 3 1 LJ09...

Page 121: ... 0 Min 0 35 3 6 MP TRAY 085310815 Taptite bind B M3x8 5 Roller frame MP Solenoind holder 0 7 0 1 7 1 1 0 Min 0 3 3 1 U11776001 Screw flanged M3x3 5 1 Solenoid assy MP 0 8 0 1 8 2 1 0 Min 0 4 4 1 085320816 Taptite bind S M3x8 4 MP tray unit 0 8 0 1 8 2 1 0 Min 0 35 3 6 087310615 Taptite cup B M3x6 1 Side guide gear 0 25 0 05 2 6 0 5 Min 0 1 1 0 PAPER TRAY LJ1506001 Taptite B 3x8 2 Side guide R plat...

Page 122: ...n 0 05 0 5 087310615 Taptite cup B M3x6 2 Cleaner roller plate 0 35 0 05 3 6 0 5 Min 0 15 1 5 087311415 Taptite cup B M3x14 2 Fuser frame upper lower 0 7 0 1 7 1 1 0 Min 0 2 2 0 087312015 Taptite cup B M3x20 2 Fuser frame upper lower 0 7 0 1 7 1 1 0 Min 0 2 2 0 087311016 Taptite cup B M3x10 2 Switching H assy L R 0 7 0 1 7 1 1 0 Min 0 2 2 0 087320616 Taptite cup S M3x6 1 Eject sensor PCB assy 0 6 ...

Page 123: ... COVER 8 REAR COVER ASSY 9 FIXING UNIT 10 MAIN PCB 20 ENGINE PCB 21 PAPER FEED 25 EJECT SENSOR PCB ASSY 26 TRANSFER BASE ASSY 24 BASE PLATE 22 SIZE SW PCB 27 FAN MOTOR 60 28 LOW VOLTAGE PS PCB ASSY HIGH VOLTAGE PS PCB ASSY 23 ELECTROMAGNETIC CLUTCH REGIST 19 FRONT COVER 1 FRONT COVER 2 13 DRIVE UNIT 18 17 FEEDING MOTOR ASSY MP TRAY UNIT 14 FAN MOTOR 80 15 MAIN MOTOR ASSY 16 ...

Page 124: ... Cord 1 Disconnect the AC cord from the printer Fig 4 1 3 2 Drum unit assembly 1 Open the open cover and remove the drum unit assembly from the printer Fig 4 2 Printer AC cord Drum Unit Assembly Drum Unit with Toner Cartridge Open cover ...

Page 125: ...r from the paper tray unit Fig 4 3 2 Push the hooks of the separation pad ASSY inwards to release them and stand the separation pad ASSY Remove the separation pad spring release the two pins of the separation pad ASSY and remove the separation pad ASSY Fig 4 4 Open cover Paper tray unit Separation pad ASSY Hook Hook Pin Pin Separation pad spring ...

Page 126: ...he paper tray unit upside down and remove the two cup B 3x8 Taptite screws of the side guide rack 2 at the right and left hand sides Release the hooks of the side guide R ASSY and the side guide L from the side guide rack 2 Fig 4 6 Taptite bind B M4x10 Taptite bind B M4x10 Paper tray label Hook Hook Paper tray cover Paper tray unit Side guide rack 2 Side guide L Taptite cup B 3x8 Side guide rack 2...

Page 127: ...uides at the right and left hand sides of the paper tray While pushing up the boss of the EX rear tray guide on the back of the paper tray slide the EX rear tray guide and EX rear tray together backwards in the tray to remove them Since the plate unit also is released at the same time unhook the hooks at the right and left hand sides by pulling the paper tray frame outwards to remove the plate uni...

Page 128: ...wards and remove the rear guide ASSY Fig 4 10 11 Unhook the catches from the shaft of the supporter stoppers L at both sides by pushing the catches with a screwdriver and remove the supporter stoppers L Then remove the supporter stopper spring from the boss of the supporter stopper L by pushing the spring upwards Fig 4 11 Levers Rear guide ASSY Hook Hook EX rear tray Supporter stopper L Supporter ...

Page 129: ...te screw to remove the side guide gear 13 Remove the two side guide rack 2 from the paper tray Fig 4 12 14 Pull the edge of the paper indicator outwards and pull the paper indicator upwards Fig 4 13 Taptite cup B 3x8 Side guide gear Side guide rack 2 Paper tray Side guide rack 2 Paper indicator Paper tray ...

Page 130: ...down and remove the plate pad the plate spring C and the plate spring D by sliding the plate pad rock plate 19 Push the hooks of the two plate spring changeover knobs and remove the knob and the plate spring Then remove the plate spring from the knob Fig 4 15 Plate Taptite cup B M3x6 Tray 1D detection cam Size detection cam Paper tray Size detection link Size detection link spring LTR LGL detectio...

Page 131: ...of the tray ASSY MP by bending the tray cover ASSY MP slightly and pull out the tray ASSY MP in the direction of the arrow as shown in the figure below Fig 4 16 2 Pull out the tray cover ASSY MP in the direction of the arrow as shown in the figure below Fig 4 17 Tray ASSY MP Boss Tray cover ASSY MP Boss Printer Printer Tray cover ASSY MP ...

Page 132: ...4 15 3 Remove the two tray cover rock springs from the tray cover ASSY MP Fig 4 18 Tray cover rock spring Tray cover rock spring Tray cover ASSY MP ...

Page 133: ...er toward you Fig 4 19 3 Release the bosses of the FU protection cover lower by pulling one of the boss holes of the FU protection cover upper outwards 4 Remove the FU protection cover springs R and L from the bosses Fig 4 20 Printer FU protection cover upper Hook FU protection cover lower Hook Boss hole FU protection cover springs R FU protection cover upper FU protection cover lower FU protectio...

Page 134: ... of the side cover outwards slightly Fig 4 21 2 Slide the side cover R2 then remove the two M3x8 Taptite screws and one cup B M3x10 Taptite screws to remove the side cover R1 Fig 4 22 Side cover L Side cover R1 Side cover R2 Hook Hook Taptite cup S M3x8 Taptite cup S M3x8 Open cover Top cover Hooks Taptite cup S M3x8 Taptite cup S M3x8 Taptite cup S M3x8 Taptite cup B M3x10 ...

Page 135: ...up S M3x6 Taptite screws securing the plate on the left hand side to remove the engine shield plate Fig 4 23 4 Loosen the three screws to remove the main shield cover Fig 4 24 Taptite cup S M3x6 Engine shield plate Taptite cup S M3x6 Main shield cover Screw Screw ...

Page 136: ...he SW panel unit upside down Remove the four cup B 3x8 Taptite screws to remove the panel rear cover 4 Release the rock of the connector and remove the LCD harness on the back of the panel PCB ASSY 5 Disconnect the engine panel harness unit 2P and main panel harness unit from the panel PCB ASSY Fig 4 26 SW panel unit Taptite cup S M3x8 Taptite cup B 3x8 Panel rear cover Engine panel harness unit 2...

Page 137: ...nd diffusion film 8 Release the two hooks on the back of the LCD holder and remove the back light PCB ASSY Fig 4 28 9 Remove the key and panel light guide from the SW panel 10 Remove the key top A and B from the key Fig 4 29 Taptite cup B M3x8 LCD holder SW panel LCD Diffusion film LCD holder Back light PCB ASSY Hook Hooks Hook SW panel Key top A Key top B Key Panel light guide ...

Page 138: ...n the notches of the actuator plate and paper actuator as shown in the figure below Pull the paper actuator toward you slightly and pull out the other end of the shaft to remove the paper actuator from the actuator plate 4 Remove the eject discharging brush and actuator plate film Fig 4 31 Taptite cup S M3x8 Actuator plate MX cap C Hook Top cover Hook MX cap B Hook Taptite cup S M3x8 MX cap A Actu...

Page 139: ...Fig 4 32 7 Remove the two cup S M3x8 Taptite screws securing the paper eject unit and the two shoulder screws securing the rear cover ASSY Then remove the rear cover ASSY from the frame Fig 4 33 Open cover Drive release link Hook Frame Taptite cup S M3x8 Taptite cup S M3x8 Taptite cup S M3x8 Paper eject unit Top cover Taptite cup S M3x8 Frame Rear cover ASSY Pin Shoulder screw ...

Page 140: ... from the rear relay PCB assy Fig 4 34 9 Remove the top cover with open cover 10 Turn the top cover and open cover upside down then push the left ends to remove the top cover from the open cover Fig 4 35 Top cover Connector Open cover Top cover Open cover Top cover Rear relay PCB ASSY MX harnesses Full stack sensor harness ...

Page 141: ...e two hooks to remove the full sensor PCB ASSY Fig 4 36 12 Bend the swing paper tray to remove it from the top cover and remove the two swing paper tray springs Fig 4 37 Hook Full sensor PCB ASSY Top cover Swing paper tray Swing paper tray spring Top cover ...

Page 142: ...er and unlock the hooks on the back of the guide to remove the paper stopper guide Fig 4 38 14 Pull one of the sides of the paper stopper guide outwards to remove the paper stopper Fig 4 39 Open cover Hooks Paper stopper guide Paper stopper Paper stopper guide ...

Page 143: ...ASSY by bending the shaft of the back tray ASSY inwards Fig 4 40 2 Remove the flap with the flap springs L R from the back tray ASSY by bending the flap 3 Remove the flap springs L R from the flap Fig 4 41 Back tray ASSY Flap spring R Flap spring L Flap Back tray ASSY Pin Back cover 1 2 ...

Page 144: ...the hooks of the rock lever to remove the rock lever and rock spring from the back tray ASSY Fig 4 42 5 Peel the back film from the back cover Fig 4 43 Back tray ASSY Rock lever Rock spring Hooks Back film Back cover ...

Page 145: ...thermistor harness then release the themistor harness from the three hooks on the fuser frame lower 3 Remove the two cup B M 3x10 Taptite screws on both sides of the fuser frame lower Then remove the two regulate plates Fig 4 45 Frame Heater harness Thermistor harness Fixing unit Hooks Thermistor harness Heater harness Hooks Hooks Regulate plate Taptite cup B M3x10 Taptite cup B M3x10 Regulate pla...

Page 146: ... frame lower 5 Remove the two cup B M3x14 screws and two cup B M3x20 screws Then remove the fuser frame upper from the fuser frame lower Fig 4 46 Taptite cup B M3x20 Taptite cup B M3x14 Fuser frame lower Fuser frame upper ASSY Taptite cup B M3x20 Taptite cup B M3x14 ...

Page 147: ...emove the fixing heater from the heat roller 34 AM 8 Remove the heat roller 34 AM from the fuser frame upper Remove the H R gear 45 Fig 4 47 NOTE When re assembling the fixing heater ensure that the direction of the fixing heater is correct referring to the figure above Heat roller 34 AM H R gear 45 Heater harness Screw pan washer M3x6 This side of the fixing heater is not colored The other side i...

Page 148: ...AM with pliers Fig 4 48 10 Remove the H R ground ring H R ball bearing H R bearing holder and H R ground plate B Fig 4 49 H R gear 45 H R ground ring H R ground plate B H R ball bearing H R bearing holder Heat roller 34 AM Crimp Crimp Heat roller 34 AM ...

Page 149: ... 14 Unhook the thermistor harness from the three hooks to remove them from fuser frame upper ASSY Fig 4 50 15 Remove the four cup B M3x14 Taptite screws from the FU frame upper to remove the thermostat A B Fig 4 51 Taptite cup B M3x14 Thermostat A Thermostat B Hook Hook Hook Fuser frame upper ASSY Hook Thermistor ASSY AMS Thermistor ASSY AMC Taptite bind B M3x12 Stop ring 3 Taptite bind B M3x12 Ta...

Page 150: ... the Switching Plate L R 19 Remove the two cup B M3x6 taptite screws then remove the cleaner roller plate from the fuser frame lower 20 Remove the CRP ground spring Fig 4 53 Pressure spring Eject pressure roller Separate pawl spring AM Separate pawl AM Fuser frame upper Separate pawl AM Taptite cup B M3x6 Fuser frame lower Hook Cleaner roller plate Taptite cup B M3x6 Hook CRP ground spring Taptite...

Page 151: ...e lower A by releasing the hook from the back of the frame and remove the idle gear 14 Slide the eject roller ASSY to align the notch of the eject roller to the one of the frame and pull out the eject roller ASSY toward you to remove it Fig 4 55 Fuser frame lower A Eject roller ASSY Idle gear 14 Hook Ejection roller stopper AM Notch Ejection roller stopper AM Cleaner roller bearing Cleaner roller ...

Page 152: ...m the frame 24 Remove the FU actuator spring from the FU actuator AM Fig 4 56 25 Turn the fuser frame upside down Release the two hooks from the two springs as shown in the drawing below Fig 4 57 FU actuator AM Hook Fuser frame lower A FU actuator spring FU actuator Hook Spring PR spring 5 PR spring 5 FU frame lower A ...

Page 153: ...pressure roller 35 from the FU frame lower A Fig 4 58 27 Remove the two plates and the two bearings from the pressure roller 35 28 Remove the two P R shaft bearing holders to remove the P R ball bearings from the P R arm AMs Fig 4 59 FU frame lower Hook Pressure roller 35 Ground wire 2 A P R arm AM P R arm AM P R ball bearing Pressure roller 35 Hook P R arm AM P R shaft bearing holder P R arm AM P...

Page 154: ...two idle gear 17s then remove them from the paper eject frame 5 Remove the retaining ring to remove the gear 14 and bearing 6 from the eject roller ASSY 6 Remove the retaining ring to remove the gear 14 and bearing 6 from the eject roller ASSY 2 Fig 4 61 Idle gear 17 Idle gear 17 Gear 26 Gear 14 Bearing 6 Gear 14 Bearing 6 Paper eject frame Pin Frame Paper eject unit Back sensor harness ASSY Back ...

Page 155: ... at the end of eject roller ASSY 2 11 Remove the bearing 6 from the eject roller ASSY 2 12 Remove the eject roller ASSY 2 from the paper eject frame as shown in the figure below Fig 4 62 13 Remove the eject pinch roller ASSY with the pinch spring by lifting them upwards until the springs are released from the frame Then remove the pinch spring from the eject pinch roller ASSY Fig 4 63 Eject roller...

Page 156: ... 15 Unhook the hook of the back actuator 4 to remove the back actuators 4 3 and back actuator 3 spring 16 Remove the back actuator 3 spring from the back actuator 3 17 Remove the cup B tite 3x8 screw to remove the back tray PCB ASSY Fig 4 64 Paper eject frame Back actuator 3 Back actuator 4 Back tray actuator spring Back tray actuator Back tray PCB ASSY Screw cup B tite 3x8 Back actuator 3 spring ...

Page 157: ...harness from the Engine PCB Refer to 3 6 3 in this chapter 3 Disconnect the LD harness 10P from the laser unit 4 Remove the laser unit from the frame NOTE When removing the laser unit from the frame never touch the glass Fig 4 65 NOTE After replacing the laser unit be sure to carry out the scanner check Refer to Chapter 6 9 2 Line Inspection Mode Procedure Taptite cup S 3x16 Taptite cup S 3x16 Las...

Page 158: ...r 2 from the frame 3 Remove the four cup S M3x8 Taptite screws to remove the front cover 1 from the frame Fig 4 66 4 Remove the bind P tite 2 3x16 screw then remove the interlock SW ASSY from the front cover Fig 4 67 Taptite cup S M3x8 Taptite cup S M3x8 Taptite cup S M3x10 Taptite cup S M3x8 Front cover 2 Taptite cup S M3x10 Front cover Frame SW connector Interlock switch Engine PCB Front cover I...

Page 159: ...Y 4 42 5 Remove the three bind B M3x8 taptite screws then remove the front cover film Fig 4 68 Note After removing the front cover film clean the paper dust collected in the front cover 2 Front cover 2 Taptite bind B M3x8 Front cover film ...

Page 160: ...e right hand side of the unit Then remove the solenoid spring MP 3 Bend the roller cover ASSY MP to release both ends of the shaft from the unit and remove the roller cover ASSY MP from the unit Fig 4 69 NOTE When re assembling the MP tray unit be sure to close the roller cover MP completely Frame Roller cover ASSY MP Solenoid ASSY MP Taptite bind B M3x8 Taptite bind S M3x8 Taptite bind S M3x8 MP ...

Page 161: ...tuator MP 5 Turn the PE sensor actuator MP so that the shutter is at the top While bending the hook on the roller cover slightly slide the PE sensor actuator MP to the left to align the notch of the actuator to the one of the cover and pull the PE sensor actuator MP upwards 6 Pull the two hooks of the roller cover outwards and remove the MP PE sensor PCB ASSY Fig 4 70 MP PE sensor PCB ASSY Hook Ro...

Page 162: ...lacing the paper feed roller ASSY MP be sure to close the roller cover MP completely NOTE When re assembling gears follow the direction below 1 Fit the cam gear 44 to the MP tray frame then turn it counterclockwise until it stops 2 Fit the plate cam MPR to the MP tray frame 3 Fit the paper feed idle gear 28 to the MP tray frame aligning notches of the paper feed idle gear 28 to the plate cam MPR a...

Page 163: ... plate ASSY MP from the MP tray frame first while pulling the MP tray frame outwards and remove the plate ASSY MP completely Fig 4 73 NOTE When re assembling gears follow the direction below 1 Fit the cam gear 44 to the MP tray frame 2 Fit the plate cam L to the MP tray frame 3 Fit the plate cam gear 28 to the MP tray frame aligning notches of the plate cam gear 28 to the gear 44 and the plate cam...

Page 164: ...fter replacing the separation plate ASSY MP be sure to close the roller cover MP completely 16 Unhook the two hooks of the separation pad spring MP and stand the separation pad holder MP toward you to remove it Remove the separation pad spring MP Fig 4 76 MP tray frame Separation plate ASSY MP Separation pad spring MP Separation pad holder MP Hook MP tray frame ...

Page 165: ... screws to remove the fan motor unit upper from the frame Fig 4 77 3 Disconnect the two connectors from the left side PCB ASSY 4 Remove the three screws to remove the sub duct 1 from the frame Fig 4 78 Fan Motor Taptite cup S M3x6 Left side PCB ASSY Frame Taptite cup S M3x6 Taptite cup S M3x6 Taptite cup S M3x6 Fan Motor unit upper Left side PCB ASSY ...

Page 166: ...e assembling the fan motor unit be sure to fit the fan motors as shown in the figure below harness upside Fig 4 79 10 Unhook the 4 hooks on the fan motor unit upper then remove the cover 11 Remove the DC fan AUB 0624 and the filter TAK CR from the fan motor unit upper 12 Peel the sub fan foam from the DC fan AUB 0624 Fig 4 80 Sub fan form Sub duct 2 Sub duct 1 Fan motor Main fan foam Fan motor uni...

Page 167: ... 16 Main Motor ASSY 1 Disconnect the main motor harness from the engine PCB 2 Remove the four cup S M3x6 Taptite screws to remove the main motor ASSY from the frame Fig 4 81 Taptite cup S M3x6 screws Engine PCB Main motor ASSY Main motor harness ...

Page 168: ...SY lower from the paper feed gear plate ASSY Fig 4 82 3 Disconnect the release motor harness ASSY from the engine PCB 4 Remove the two cup S M3x6 Taptite screws to remove the feeding motor ASSY upper from the frame Fig 4 83 Feeding motor ASSY lower Taptite cup S M 3x6 Engine PCB Feeding motor ASSY upper Engine PCB Paper feed gear plate ASSY Taptite cup S M 3x6 Frame ...

Page 169: ...ve cup S M3x6 Taptie screw to remove the paper feed gear plate ASSY from the frame Fig 4 84 5 Remove the friction spring from the spring hook and paper feed gear plate ASSY and remove the spring hook from the sector gear 35 Fig 4 85 Taptite cup S M3x6 Paper feed gear plate ASSY Screw flanged M3x3 5 Paper feed gear plate ASSY Hook Spring hook Friction spring Solenoid lever Solenoid spring MP Soleno...

Page 170: ...the frame 9 Disconnect the connector from the developing gear ASSY 10 Remove the gear collar then remove the two cup S M3x6 taptite screws to take off the developing gear ASSY from the main gear plate ASSY 11 Take off the electro magnetic develop clutch from the developing gear ASSY Fig 4 87 Engine PCB Taptite cup S M3x6 Gear unit Taptite cup S M3x6 Taptite cup S M3x6 Taptite cup S M3x6 Developing...

Page 171: ...the toner sensor PCB then remove the toner sensor PCB from the frame Fig 4 88 16 Unhook the two hooks to remove the drum gear link with the drum gear cam 17 Align the joint of the drum gear link and the drum gear cam as shown in the figure below to remove the drive release cam lever from the drive release link Fig 4 89 Main gear plate ASSY Engine PCB Taptite cup S M3x6 Taptite cup S M3x6 Drive rel...

Page 172: ...4 55 3 19 Electromagnetic Clutch Regist 1 Remove the collar and the electromagnetic clutch regist from the frame Fig 4 90 Collar Electromagnetic clutch regist ...

Page 173: ...he main PCB assy and remove the two screws and two bolts from the connectors at the back of the frame Then remove the main PCB assy from the frame Fig 4 91 NOTE After replacing the Main PCB be sure to carry out the scanner check Refer to Chapter 6 9 2 Line Inspection Mode Procedure Screw pan M3x6 Taptite bind S 3x6 Taptite cup S M3x6 Bolts Taptite cup S M3x6 Network borad HL7050NONLY Screw pan M3x...

Page 174: ...d remove the engine PCB from the frame Fig 4 92 3 22 Base Plate 1 Place the frame so that the base plate is at the top 2 Remove the four pan S P washer S M3x8 Taptite screws and slide the base plate in the direction of the arrow as shown in the figure below to remove it Fig 4 93 Taptite cup S M3x6 Engine PCB Taptite pan S P washer S M3x8 Taptite pan S P washer S M3x8 Base plate ...

Page 175: ...he cup S M3x6 Taptite screw securing the inlet unit and one pan S P washer M3 5x6 screw securing the ground wire 4 Remove the cup S M3x6 Taptite screw from the low voltage power supply PCB ASSY to remove the low voltage power supply PCB ASSY with the inlet from the frame 5 Disconnect the connectors from the low voltage power supply PCB ASSY Fig 4 95 Tray guide left back Taptite bind B Tite 4x10 PC...

Page 176: ...r supply PCB from the frame Fig 4 96 7 Remove the transfer plate from the high voltage power supply PCB ASSY Fig 4 97 NOTE When re assembling the High voltage power supply PCB ASSY ensure that the direction of the transfer plate is correct referring to the figure above Taptite bind B M4x10 Taptite cup S M3x6 Hook High voltage power supply PCB ASSY High voltage Power Supply PCB ASSY Transfer plate ...

Page 177: ...nt Guide ASSY 1 Disconnect the connector from the left side PCB ASSY on the Frame 2 Remove the two shoulder screws to take off the front guide ASSY Fig 4 98 Frame Shoulder screw Front guide ASSY harness Front guide ASSY Left side PCB ASSY Release clump ...

Page 178: ...4 99 2 Disconnect the connector of the left side PCB ASSY from the engine PCB 3 Release the connector of the left side PCB ASSY from the three clumps 4 Remove the two screws to take off the left side PCB ASSY Fig 4 100 Pressure spring R Pressure spring L Clump Left side PCB ASSY Clump Taptite cup S M3x6 ...

Page 179: ...k the seven hooks to remove the process guide R and L from the frame Fig 4 101 6 Remove the spring gold on the left side of the frame 7 Remove the spring gold and the gear on the right side of the frame Fig 4 102 Hooks Taptite cup B 3x8 Process guide R Taptite cup B 3x8 Gear Spring gold Spring gold Hooks Hooks Process guide L ...

Page 180: ...se the hooks of the holder bearings to remove them from the paper feed roller shaft 11 Remove the holder then pull the paper feed roller with roller bearings from the paper feed roller shaft 12 Remove the roller bearings from the paper feed roller Fig 4 104 Collar Collar Paper feed roller bearing Pinch roller MP Paper feed roller bearing Holder spring Paper feed roller Foam holder Assy Holder spri...

Page 181: ...05 15 Remove the two collars and the two bearings from the both sides of the paper feed roller MP 16 Slide the paper feed roller MP to the right until the left end of the ASSY is released from the frame and pull it out to the oblique direction Fig 4 106 Collar Feeding roller bearing Collar Paper feed roller MP Cover Hook Plate A Plate B Taptite cup B 3x10 Feeding roller bearing Taptite cup B 3x10 ...

Page 182: ...Fig 4 107 19 Remove the two collars and the two bearings A from the both sides of the regist roller ASSY 20 Slide the regist roller ASSY to the right until the left end of the ASSY is released from the frame and pull it out to the oblique direction Fig 4 108 Collar Bearing AM Pinch roller Collar Collar Bearing A Bearing A Collar Frame Regist roller ASSY Bearing AM ...

Page 183: ...ransfer base ASSY by pulling towards you Fig 4 109 22 Turn the transfer base ASSY upside down and then remove the hook to remove the resist sensor PCB ASSY Fig 4 110 Frame Transfer base ASSY Hook Resist sensor PCB ASSY Resist sensor PCB ASSY Transfer base ASSY ...

Page 184: ...r springs then remove the foam holder assy by turning it Release the hooks of the holder bearings to remove them from the paper feed roller shaft 5 Remove the holder then pull the paper feed roller with roller bearings from the paper feed roller shaft 6 Remove the roller bearings from the paper feed roller Fig 4 112 Frame Spring black Collar Paper feed roller bearing Pinch roller TR Hook Collar Sp...

Page 185: ...Unhook the hook of the gear to remove it from Foam holder A4 ASSY 10 Unhook the hooks of the bearings to remove them from both ends of the Foam holder A4 ASSY 11 Remove the Foam holder A4 ASSY from the frame as shown in the figure below Fig 4 114 Spring silver Paper feed roller bearing Spring silver Paper feed roller bearing Taptite cup S M3x6 Plate Frame Taptite cup S M3x6 Frame Collar Hook Hook ...

Page 186: ...ght then pull it out in the oblique direction Fig 4 115 16 Unhook the hooks of the 2 kinds of gears from both ends of the paper feed roller A4 17 Remove the collar from right end of the paper feed roller A4 18 Remove the two bearings from both ends of the paper feed roller A4 19 Slide the paper feed roller A4 as shown in the figure below and remove it from the frame Fig 4 116 Hook Collar Frame Fee...

Page 187: ...he chute 21 Remove the chute from the frame Fig 4 117 22 Turn the frame upside down and remove the paper feed roller ASSY 45 from the paper feed roller shaft by releasing the hook Fig 4 118 Frame Frame Paper feed roller ASSY 45 Hook Paper feed roller shaft Taptite cup S M3x6 Taptite S M3x6 Chute ...

Page 188: ... paper feed roller ASSY of the upper side of the frame 26 Remove the gear 28 from the paper feed roller ASSY of the lower side of the frame by releasing the hook 27 Remove the collar and the bearing from the paper feed roller ASSY of the lower side of the frame Fig 4 119 Gear 28 Gear 28 Hook Collar Paper feed roller ASSY Paper feed roller ASSY Paper feed roller bearing Collar Paper feed roller bea...

Page 189: ...aper feed roller ASSY to the right until the left end of the ASSY is released from the frame and pull it out in the oblique direction Fig 4 120 31 Remove the four cup S M3x6 taptite screws from both sides of the plate 32 Remove the plate from the frame Fig 4 121 Paper feed roller ASSY Hook Retaining ring Gear 28 Collar Frame Paper feed roller bearing Collar Taptite cup S M3x6 Taptite cup S M3x6 Ta...

Page 190: ...5 Remove the paper feed roller shaft from the frame and then remove the bearing from the left end of the paper feed roller shaft by releasing the hook Fig 4 122 36 Disconnect the PE sensor connector from the engine PCB 37 Remove the PE sensor holder from the frame by releasing the hook Fig 4 123 Frame Bearing PE sensor holder Bearing Hook Paper feed roller shaft PE sensor holder Hook Frame Paper f...

Page 191: ...of the PE sensor holder by pulling the holder outwards in the direction of the arrows shown in the drawing below 39 Remove the tray PE sensor PCB ASSY from the PE sensor holder by releasing the two hooks Fig 4 124 PE sensor actuator Hole PE sensor holder Hook Tray PE sensor PCB ASSY Hook Hole ...

Page 192: ...ft side of the printer and remove the tray guide right rear from the frame by inclining it in the direction of the arrow Fig 4 125 2 Remove the guide plate spring from the tray guide right rear Fig 4 126 Frame Taptite bind B tite 4x10 Tray guide right rear Guide plate spring Tray guide right rear ...

Page 193: ...size switch spring slightly inwards to the arrow 1 direction and remove the size SW PCB as shown in the figure below Fig 4 127 4 Remove the three cup S M3x4 Taptite screws to remove the size switch spring from the frame Fig 4 128 Size switch spring Taptite cup S M3x6 Size SW PCB Size SW PCB 1 2 3 Size switch spring Frame Size switch spring Frame Taptite cup S M3x4 ...

Page 194: ...4 77 3 28 Fan Motor 60 1 Remove the two pan B M3x35 Taptite screws to remove the fan motor 60 from the frame Fig 4 129 Frame Taptite pan B M3x35 Fan motor 60 ...

Page 195: ... main duct to the right then remove it 2 Remove the shutter from the main duct Fig 4 130 3 Remove the gear collar C then remove the gear 18 60 4 Remove the four cup S M 3x6 taptite screws Fig 4 131 Main duct Shutter Gear collar C Gear 18 60 Taptite cup S M3x6 Hook Taptite cup S M3x6 Ejection gear unit Main duct ...

Page 196: ... Thin coat of grease with a brush 0 5 mm dia ball 1 mm dia ball 2 mm dia ball 3 mm dia ball Rice sized pinch of grease 4 mm dia ball 5 mm dia ball FLOIL GE 676 GE2 FLOIL BG 1M Kanto Kasei Ltd BG4 FG 80H Kanto Kasei Ltd FG4 1 Pinch roller MP Fig 4 132 Collar Collar Paper feed roller bearing Paper feed roller bearing Pinch roller MP GE2 ...

Page 197: ...ch roller TR Fig 4 133 3 Foam holder A4 ASSY Fig 4 134 Collar Paper feed roller bearing Paper feed roller bearing Collar Collar Paper feed roller bearing Collar Stopper spring Foam holder A4 ASSY GE2 GE2 Pinch roller TR Paper feed roller bearing GE2 ...

Page 198: ...be spread Fig 4 135 Feeding motor ASSY Gear 16 knob BG4 BG4 4 pcs BG4 BG4 Gear 23 50 BG4 2 pcs Gear 31 BG4 2 pcs BG4 Sector gear 35 4 pcs BG4 Gear 31 43 BG4 6 pcs BG4 Gear collar Gear 20 57 BG4 Feeding gear plate ASSY Gear 44 Gear 20 BG4 Gear 31 Gear 20 43 BG4 4 pcs BG4 4 pcs BG4 4 pcs BG4 3 pcs BG4 2 pcs 2 pcs BG4 4 pcs BG4 7 pcs BG4 2 pcs 6 pcs ...

Page 199: ... shaft be sure to insert in rotating the gear 90 degrees or more so that grease may be spread Fig 4 136 BG4 BG4 FG4 FG4 FG4 FG4 H R drive gear 21 Gear 21 Planet gear plate ASSY Ejection gear plate B ASSY Gear 18 60 Gear 19 28 Gear 21 FG4 Ejection gear plate A ASSY BG4 3 pcs BG4 2 pcs BG4 4 pcs BG4 3 pcs ...

Page 200: ...ure to insert in rotating the gear 90 degrees or more so that grease may be spread Fig 4 137 BG4 BG4 BG4 BG4 BG4 BG4 BG4 BG4 BG4 BG4 BG4 BG4 Gear 42 Gear 45 83 Gear 130 25 Gear 21 main Electromagnetic develop clutch Gear 41 Developing joint Gear 41 98 Main gear plate ASSY ...

Page 201: ...Y AND RE ASSEMBLY 4 84 5 PACKING Fig 4 138 Accessory bag Styrofoam ASSY AC cord Printer Swing paper tray holder Spacer MP Tray hold pad Drum Unit Assembly Drum unit with Toner Cartridge Carton Styrofoam ASSY Styrofoam ASSY ...

Page 202: ...e the printer never touch the red colored parts shown in the following figures 1 CONSUMABLE PARTS The consumable parts described in this section are parts which are subject to deterioration or damage and should be replaced at least once during the period of warranty of the product if any print quality problem appears 1 1 Drum Unit The CHANGE DRUM SOON message appears on the LCD display when the dr...

Page 203: ...e pressing the Blue lock lever pull the toner cartridge out of the drum unit assembly Fig 5 2 Fig 5 2 4 Unpack the new drum unit and remove the protective materials 5 Install the toner cartridge into the new drum unit until you hear it lock into place with a click When the toner cartridge is installed correctly the Blue lock lever is lifted automatically Fig 5 3 Fig 5 3 6 Put the drum unit assembl...

Page 204: ... toner powder does not spill out of the unit Do not reset the page counter when replacing the toner cartridge only It is recommended to clean the printer when you replace the drum unit Refer to subsection 3 PERIODICAL CLEANING in this Chapter 1 2 Toner Cartridge Toner low The TONER LOW message appears at intervals on the LCD display when the toner cartridge has nearly run out of toner Toner life e...

Page 205: ...posable paper or cloth in case you accidentally spill or scatter toner 3 Unpack the new toner cartridge Keeping the cartridge horizontal gently rock it from side to side five or six times Fig 5 5 Fig 5 5 4 Remove the yellow plastic protective cover Fig 5 6 Fig 5 6 5 Put the new toner cartridge into the printer When the toner cartridge is installed correctly the Blue lock lever is lifted automatica...

Page 206: ... specially formulated to ensure top print quality Printing with a 3rd party toner or toner cartridge may reduce not only the printing quality but also the quality and life of the printer itself It may also cause serious damage to the performance and life of a genuine Brother drum unit Warranty cover is not applied to problems caused by the use of 3rd party toner or toner cartridges Make sure that ...

Page 207: ... of prints Replacement Procedure Fixing Unit 115V LJ1343001 1 200 000 pages See below Fixing Unit 230V LJ1487001 1 200 000 pages Paper Feeding Kit Separation Pad ASSY and Paper Feed Roller ASSY LJ0977001 1 100 000 pages See 3 3 PaperTray in CHAPTER 4 for Separation Pad ASSY and 3 26 Paper Feed in CHAPTER 4 for Paper Feed Roller ASSY Laser Unit Scanner Unit LJ1443001 1 200 000 pages See 3 12 Laser ...

Page 208: ...th When replacing the toner cartridge be sure to clean the printer interior If printed pages are stained with toner clean the printer interior with a dry soft cloth 3 1 Cleaning the Printer Exterior Clean the printer exterior to keep the printer clean 1 Turn off the power switch and unplug the power cord 2 Pull the paper tray out of the printer and the open the multi purpose tray 3 Wipe the printe...

Page 209: ... toner and paper dust from the metal plate in the printer with a dry soft cloth Fig 5 11 4 Wipe the scanner window with a dry soft cloth Fig 5 12 5 Install the toner cartridge into the printer 6 Close the top cover plug the power cord into the AC inlet and then turn on the printer CAUTION Do not touch the scanner window with your fingers Do not wipe the scanner window with cleaning alcohol isoprop...

Page 210: ...HL 7050 SERVICE MANUAL 5 9 4 MTBF MTTR The meantime between failure MTBF and the meantime to repair MTTR for this printer are as follows MTBF Up to 4 000 hours MTTR Average 30 minutes ...

Page 211: ... not placed where the ventilation hole of the printer is blocked 2 Print paper Check if A recommended type of print paper is being used If the paper is too thick or too thin or tends to curl paper jams or paper feed problems may occur or printed images may be blurred The print paper is damp If so use fresh paper and check whether the print quality improves or not The print paper is short grained p...

Page 212: ...nsation has occurred print several pages or leave the printer for 2 hours to allow it to reach room temperature If the drum unit is unpacked soon after it is moved from a cold room to a warm room condensation may occur inside the unit which may cause incorrect images Instruct the user to allow the unit to come to room temperature before unpacking it This will take one or two hours 1 2 Warnings for...

Page 213: ...nicians should perform Error message appears on LCD display The printer does not start printing 3 1 Paper Loading Problems 3 2 Paper Jams 4 Software Setting Problems Paper jam occurs Printed image has a problem 6 Image Defects 3 3 Paper Feeding Problems Printout is not correct 7 Incorrect Printout The printer does not print Printed page has a problem 2 1 Operator Calls 2 2 Service Calls 5 Malfunct...

Page 214: ...ut tray Push down the two blue levers and then press Go JAM XXX Carefully pull out the jammed paper from the indicated area as shown in Paper jams and how to clear them STACKER FULL Take some paper out of the output tray SIZE MISMATCH Put the same size paper in the paper tray or multi purpose tray that is selected in the printer driver and then press Go TOO MANY TRAYS You can only have up to three...

Page 215: ... is formatted properly Turn off the printer Wait a few seconds then turn it on again If this error message appears again replace the CompactFlash card with a newone HDD ERROR Make sure of the following points The cable is connected correctly The HDD is installed correctly The installed HDD is formatted correctly Turn off the printer Wait a few seconds then turn it on again If this error message ap...

Page 216: ... assembly Gently slide the blue tab across several times CHANGE DRUM SOON The drum unit is almost at the end of life Prepare a new drum unit TONER LOW Purchase a new toner cartridge and have it ready before you get a TONER LIFE END message TONER LIFE END Replace the new toner cartridge REPLACE PF KIT MP Call your dealer for a replacement paper feeding kit REPLACE PF KIT1 Call your dealer for a rep...

Page 217: ... then turn it on again If the error is not cleared and the same service call appears identify the error from the table on the next page and take the corrective action described for each indication to correct it Error occurs Confirm the LCD indication Turn OFF ON the power switch Error occurs again See section 5 MALFUNCTIONS Temporary error Use the printer with out corrective action NO YES ERROR SE...

Page 218: ... main PCB ERROR S06 SYSCALL EX Turn off the printer Wait a few seconds then turn it on again If still remains replace the main PCB ERROR S07 BREAKPOINT EX Turn off the printer Wait a few seconds then turn it on again If still remains replace the main PCB ERROR S08 RESERVED INSTRUCT EX Turn off the printer Wait a few seconds then turn it on again If still remains replace the main PCB ERROR S09 COPR...

Page 219: ...rn off the printer Wait a few seconds and then turn it on again Refer to M 8 Scanner failure in this chapter ERROR E54 Malfunction of main motor Turn off the printer Wait a few seconds and then turn it on again Refer to M 4 No paper supplied in this chapter ERROR E55 Malfunction of high voltage power supply Malfunction of transfer roller ASSY Turn off the printer Wait a few seconds and then turn i...

Page 220: ...ERROR H67 NV RAM reading error Turn off the printer Wait a few seconds and then turn it on again Refer to M 10 ROM error D RAM error NV RAM error in this chapter ERROR H68 NV RAM bus error Turn off the printer Wait a few seconds and then turn it on again Refer to M 10 ROM error D RAM error NV RAM error in this chapter ERROR H73 Flash reading error Turn off the printer Wait a few seconds and then t...

Page 221: ...er driver The printer does not load envelopes The printer can load envelopes from the multi purpose tray The application software must be set up to print on the envelope size being used This is usually done in the page setup or document setup menu of the software See the software application manual A paper jam has occurred 1 Clear the jammed paper referring to Paper jams and how to clear them 2 Ch...

Page 222: ...nting on small sized or thick paper it is recommended to change the adjustment levers in the paper cassette using a coin by pushing down the plate of the cassette as follows The switches in this illustration are shown in the default setting position A6 Switch 1 OFF Switch 2 OFF A4 100 g m 2 27 lbs Letter 105 g m 2 28 lbs Legal 105 g m 2 28 lbs Switch 1 ON Switch 2 ON Executive A5 B6 Switch 1 OFF S...

Page 223: ...HL 7050 SERVICE MANUAL 6 13 JAM C JAM A2 A5 JAM D JAM A1 JAM B JAM E Fig 6 1 Tray 2 Tray 1 Tray 3 Tray 4 ...

Page 224: ...ray Tray A3 Tray A4 or Tray A5 1 Pull the paper tray out of the printer 2 Pull out the jammed paper Fig 6 2 Note If you cannot pull out a small piece of jammed paper you can remove it by turning the dial to the lower position as shown below Fig 6 3 3 Load paper below the maximum paper mark While pressing the blue paper guide release lever slide the paper guides to fit the paper size Check that the...

Page 225: ...M INSIDE 1 Open the top cover of the printer 2 Take out the drum unit assembly drum unit with the toner cartridge Warning After you have just used the printer some parts inside the printer are extremely hot When you open the top cover of the printer never touch the fuser or the fixing roller Inside the printer Open the face up output tray Caution After you have removed the jammed paper print a few...

Page 226: ...he drum unit assembly Remove a piece of jammed paper if there is any inside the drum unit Fig 6 6 Caution Handle the toner cartridge carefully If toner scatters on your hands or clothes wipe or wash it off with cold water immediately Do not touch the shaded parts shown in Figure 6 7 and 6 8 Figure 6 7 Figure 6 8 5 Put the drum unit assembly back in the printer press firmly 6 Close the top cover of...

Page 227: ...output tray 1 Use both hands to slowly pull the jammed paper from the paper exit Fig 6 9 Note If a Duplex unit is on the printer take it off the printer After you pull out the jammed paper put the Duplex unit back on the printer 2 Open the face up output tray Fig 6 10 ...

Page 228: ...CHAPTER 6 TROUBLESHOOTING 6 18 3 Use both hands to slowly pull out the jammed paper Fig 6 11 4 Close the face up output tray 5 Open the top cover of the printer and then close it to resume printing ...

Page 229: ...paper from the paper exit of the Duplex unit Fig 6 12 2 Use both hands to gently open the Duplex unit cover 3 Use both hands to pull the Duplex unit out of the printer Fig 6 13 NOTE Look inside the printer s slot for the duplex unit to make sure that the jammed paper is not in there ...

Page 230: ...Duplex uniy be sure to hold it firmly with both hands the shaded part in the illustration is heavier Fig 6 14 4 Pull out the jammed paper from inside the Duplex unit Fig 6 15 5 Put the Duplex unit back in the printer Fig 6 16 6 Gently close the Duplex unit cover ...

Page 231: ...UAL 6 21 JAM MAILBOX 1 Open the back cover of the Mailbox unit Fig 6 17 2 Pull out the jammed paper Fig 6 18 3 Close the back cover of the mailbox 4 Open the top cover of the printer and then close it to restart printing ...

Page 232: ...aration plate ASSY MP referring to subsection 3 14 MP Tray Unit in CHAPTER 4 The regist front actuator or the tip actuator is not working properly and has not turned off Check actuator motion and replace it with a new one if it is broken JAM B The regist front actuator the tip actuator or the eject sensor is not working properly and has not turned off Check actuator or sensor motion and replace it...

Page 233: ...urface resistance have a tendency to double feed This problem is solved by setting the spring pressure of the Paper Tray to OFF OFF F 2 Wrinkles or creases User Check 1 Check that paper is loaded into the paper cassette correctly 2 Check the paper used meets the recommended paper specifications 3 Try printing using the straight through output path 4 Turn over the stack of paper in the tray or try ...

Page 234: ...ck the paper used meets the recommended paper specifications F 4 Curl or Wave User Check 1 Check the paper used meets the recommended paper specifications Both high temperature and humidity will cause paper to curl 2 If the printer is used infrequently the paper may have sat for too long in the paper tray Turn over the stack of paper in the paper tray Also try rotating the paper 180 in the paper t...

Page 235: ...e port which is also connected to a mass storage device or scanner Remove all other devices and connect the port to the printer only Turn off the printer status monitor in the device options tab in the printer driver 5 If the print port is set as an ECP port change it to a normal port 6 Try printing the test page referring to subsection 5 5 Control Panel Setting Menu in CHAPTER 2 7 Try resetting t...

Page 236: ...e settings match that of your printer 2 Check if the printer has any printer alarms active 3 Check if the appropriate printer is selected in your application software 4 If the serial interface is used check that the interface settings are correctly set up with the proper panel switches Check that the serial parameters of baud rate parity and stop bits match between your application software and th...

Page 237: ... to re install the driver 2 Try to connect the printer directly to the computer if it is connected through a network Possible cause Step Check Result Remedy Computer settings 1 Does Universal Serial Bus Controllers appear in the Device Manager tab of System Properties in Control Panel No This problem can be caused by your computer settings See the computer manual USB cable printer damage 2 Does th...

Page 238: ...t connector of the low voltage power supply and the power plug Yes Replace the AC power cord M 2 No DC power supplied Possible cause Step Check Result Remedy AC power supply 1 Is AC power supplied between connectors CN1 L and CN1 N when the power plug is plugged into the outlet No Follow the same check procedure of M 1 No AC power supplied Wiring DC load 2 Turn off the power switch and disconnect ...

Page 239: ... connector 1 Is the contact of the solenoid and feed motor connector on the engine PCB good No Reconnect the connector Engine PCB circuit 2 Set paper in the manual paper slot and make a test print by pressing the control panel button Yes Replace the engine PCB Registration Clutch CN31 Feeder Clutch CN31 MP solenoid CN10 Paper pick up solenoid CN4 Does the voltage between pins 2 SOLENOID and 1 24V ...

Page 240: ...lure Possible cause Step Check Result Remedy Poor thermistor harness contact 1 Is the contact of connector CN7 on the engine PCB good No Reconnect the connector Blown thermostat 2 Remove the fixing unit and measure the resistance of thermostat Is it open circuit Yes Replace the fixing unit Thermistor failure 3 Is the thermistor installed properly Yes Replace the fixing unit No Reinstall the thermi...

Page 241: ...ctor Blown thermostat 2 Remove the fixing unit and measure the resistance between the input connectors Is it open circuit Yes Replace the fixing unit Thermistor failure 3 Is the thermistor installed properly Yes Replace the fixing unit No Reinstall the thermistor properly Halogen heater lamp failure 4 Remove the fixing unit and measure the resistance of the halogen heater lamp Is it open circuit Y...

Page 242: ... Panel Setting Menu in CHAPTER 2 No Replace the main PCB Software bug 2 Does this problem appear when printing specific data or printing under a specific environment Yes Inform the Brother office of the used specific data printer condition and system environment M 12 Engine interface error Possible cause Step Check Result Remedy Fixing unit ground wire connection 1 Is the ground wire on the fixing...

Page 243: ...roblem Yes Replace the network board Main PCB 3 Is the problem solved by replacing the main PCB Yes Replace the main PCB M 14 TR Release Motor Error Possible cause Step Check Result Remedy Connection failure of TR Release Motor connector and TR Release Motor sensor 1 Is the contact of connector CN20 and CN3 on the engine PCB good No Reconnect the connector Power on 2 Does the TR Release Motor work...

Page 244: ...i n t o u t t e s t p r i n t o u t t e s t p r i n t o u t t e s t P r i n t o u t t e s t p r i n t o P r i n t o u t t e s t p r i n t o u t t e s t p r i n t o u t t e s t P r i n t o u t t e s t p r i n t o P r i n t o u t t e s t p r i n t o P r i n t o u t t e s t p r i n t o u t t e s t p r i n t o u t t e s t P r i n t o u t t e s t p r i n t o P r i n t o u t t e s t p r i n t o u t t e ...

Page 245: ...cartridge is replaced with a full one Yes The wiper of the toner cartridge is defective Replace the toner cartridge Drum connection failure 3 Are all the contacts between the drum unit and printer body connected correctly No Clean contact electrodes both on the drum unit and in the printer body 1 4 5 6 High voltage power supply PCB failure 4 Is the harness connection between the high voltage power...

Page 246: ... one High voltage power supply PCB failure 4 Is the connections of the connector between the high voltage power supply PCB and the engine PCB secured correctly Yes Replace the high voltage power supply PCB Main PCB failure 5 Are there any disconnected connectors No Replace the main PCB Engine PCB failure 6 Are there any disconnected connectors No Replace the engine PCB User Check 1 Check the paper...

Page 247: ...problem solved after replacing the drum unit Yes Replace the drum unit Toner cartridge failure 4 Is the problem solved after replacing the toner cartridge Yes Replace the toner cartridge with a new one Scanner harness connection failure 5 Is the scanner harness connected securely Check if there is any play in the connection No Reconnect the connector correctly Main PCB failure 6 Are printing signa...

Page 248: ...lean both electrodes 3 Harness connection 4 Is the laser unit connected to the main PCB correctly No Connect the harness between the laser unit and the main PCB correctly High voltage power supply PCB failure 5 Is the problem solved after replacing the high voltage power supply PCB Yes Replace the high voltage power supply PCB Main PCB failure 6 Is the problem solved after replacing the main PCB Y...

Page 249: ...re roller Clean the pressure roller as follows 1 Set three or more sheets of paper in the paper cassette 2 Turn off the power switch of the printer 3 While holding down the Go switch press switch switch and then Set switch The LCD display shows TEST MENU 4 Press the Set switch and SINGLE TEST PRINT will appear on the LCD display 5 Press the switch and REPEAT TEST PRINT will appear on the LCD displ...

Page 250: ...the drum surface dirty with toner in streaks Yes Replace the drum unit Scratch on the heat roller 5 Is the surface of the heat roller scratched Yes Replace the fixing unit NOTE If you print the same pattern continuously the drum will be worn and black vertical streaks will appear on the paper This problem may occur with noise due to the corona wire being dirty In that case clean the corona wire wi...

Page 251: ...re the charge electrodes between the printer body and the drum unit dirty Yes Clean both electrodes 3 High voltage power supply PCB failure 5 Is the problem solved after replacing the high voltage power supply PCB Yes Replace the high voltage power supply PCB I 8 Black vertical streaks in a gray background Possible cause Step Check Result Remedy Ground contacts Translucent stain on the scanner win...

Page 252: ...electrodes at both sides 4 User Check 1 Try to wipe the scanner window with a soft cloth 2 The toner cartridge may be damaged Install a new toner cartridge 3 Check the printer s environment High temperature and high humidity conditions can cause this problem 4 Damp wet paper might be used Try to change to freshly unpacked paper User Check 1 Check the paper used meets the recommended paper specific...

Page 253: ...stration sensor normal No Reposition the sensor to the correct position I 12 Poor fixing Possible cause Step Check Result Remedy Print paper 1 Is thick paper of more than 43lb being used Yes Recommend to use the specified types of paper Toner sensing failure When printing is faint 2 Is the problem solved by replacing the drum unit or the toner cartridge Yes 1 Toner is empty 2 The toner sensing is ...

Page 254: ...u t t e s t p r i n t o P r i n t o u t t e s t p r i n t o P r i n t o u t t e s t p r i n t o u t t e s t p r i n t o u t t e s t P r i n t o u t t e s t p r i n t o P r i n t o u t t e s t p r i n t o P r i n t o u t t e s t p r i n t o u t t e s t p r i n t o u t t e s t P r i n t o u t t e s t p r i n t o P r i n t o u t t e s t p r i n t o P r i n t o u t t e s t p r i n t o u t t e s t p r ...

Page 255: ...ly unpacked paper Yes Damp wet paper might be used Recommend to change freshly unpacked paper Environment 5 Does the problem still appear after the printer has warmed up Yes 1 Replace the drum unit 2 Advise the user of the specified print environment NOTE Clean the drum unit as follows 1 Remove the toner cartridge from the drum unit Place the printing samples in front of the drum unit and find the...

Page 256: ...f an arrow Fig 6 21 3 Wipe the surface of the photosensitive drum with a cotton swab until the dust or paper powder on the surface comes off Fig 6 22 CAUTION Do not wipe the surface of the photosensitive drum with something sharp ball point pen etc Use cleaning liquid which is a 50 50 mixture of ethyl alcohol and pure water Photosensitive drum Photosensitive drum ...

Page 257: ...o Clean contact electrode both on the drum unit and in the printer body 8 Fixing unit 3 Are the spots at 108mm intervals The problem is not solved after printing a few pages Yes 1 Check and clean the heat roller with a cloth dampened with alcohol 2 Replace the fixing unit High voltage power supply PCB failure 4 Is the problem solved after replacing the high voltage power supply PCB Yes Replace the...

Page 258: ...esult Remedy Ground contacts Corona failure 1 Is the wire cleaner at its home position No Return the wire cleaner to its home position 2 Corona failure 2 Is the corona wire dirty Yes 1 Clean the corona wire 2 If the problem still appears after cleaning replace the drum unit 2 ...

Page 259: ...en after removing the drum unit and toner cartridge Yes Toner sensor failure Clean the toner sensor and check the toner sensor connection Toner cartridge failure 3 Is the problem solved after replacing the toner cartridge Yes Replace the toner cartridge Drum unit failure 4 Is the problem solved after replacing the drum unit Yes Replace the drum unit No Replace the high voltage power supply PCB NOT...

Page 260: ...face paper Yes Recommend to use the specified types of paper No Refer and compare with I 15 User Check 1 Check the paper used meets the recommended paper specifications 2 Select the Thick paper mode in the printer driver or use thinner paper than you are currently using 3 Check the printer s environment conditions such as high humidity may cause this situation to occur ...

Page 261: ... high voltage power supply PCB Yes Replace the high voltage power supply PCB I 21 Horizontal lines Possible cause Step Check Result Remedy Ground contacts Paper feed roller 1 Are the feed roller shaft and the ground contact connected correctly No Check the connection between the shaft and the ground contact Also check the ground contact on the back of the feed roller Paper cassette contacts 2 Are ...

Page 262: ...g 1 Is thin paper such as 64g m 2 used under the thick paper mode Yes 1 Change the current mode to the normal mode from the driver setting 2 Print 5 or 6 blank pages if this problem occurs Drum unit failure 2 Is the problem solved after replacing the drum unit Yes Replace the drum unit High voltage power supply PCB failure 3 Is the problem solved after replacing the high voltage power supply PCB Y...

Page 263: ...ck the paper used meets the recommended paper specifications A rough surfaced paper may cause the problem 2 The toner cartridge may be damaged Install a new toner cartridge 3 The drum unit may be damaged or may be nearly at the end of life Install a new drum unit ...

Page 264: ... Fig 6 23 6 3 2 Printer body Paper tray Fig 6 24 Toner cartridge Paper Cassette 2 Wire cleaner 3 Charge 1 Photosensitive drum 7 Ground 5 Grid 3 Charge 6 Development roller 6 Transfer roller 4 Development roller 8 Cleaner 8 Cleaner Drum unit Paper Cassette 5 Grid 8 Cleaner 8 Cleaner ...

Page 265: ...so connected to a mass storage device or scanner Remove all other devices and connect the port to the printer only Turn off the printer status monitor in the device options tab in the printer driver 6 If the print port is set as an ECP port change it to a normal port 7 Try printing the test page referring to subsection 5 5 Control Panel Setting Menu in CHAPTER 2 8 Try resetting the factory setting...

Page 266: ...h the MEMORY FULL message or the LIMIT CHECK message when using BR Script driver User Check 1 Press the panel button to print the data remaining in the printer 2 Reduce the complexity of your document or reduce the printer resolution 3 Expand the printer memory by adding a recommended DIMM NOTE This problem may appear if the data is too complex Take the following procedures Possible cause Step Che...

Page 267: ...nter prints the first couple of pages correctly then some pages have text missing User Check A problem related to serial interface setting The PC is not recognizing the printer s input buffer full signal Causes could be incorrect serial cable incorrectly wired or too long or incorrect setting of the computer serial interface P 6 The printer sometimes prints a couple of characters and then ejects t...

Page 268: ...P Try pinging the print server from the host operating system prompt with the command ping IP address where IP address is the print server IP address note that in some instances it can take up to two minutes for the print server to load its IP address after setting the IP address If a successful response is received then proceed to the UNIX TCP IP Windows NT LAN Server Windows98 95 Me Peer to Peer...

Page 269: ...peater 5 If you have a bridge or router located between the print server and host computer make sure that the device is set up to allow the print server to send and receive data from the host For example a bridge can be set up to only allow certain types of Ethernet addresses to pass through a process known as filtering therefore such a bridge must be configured to allow Brother print server addre...

Page 270: ...ny workstation using the rarpd rarpd a or equivalent command Verify that the etc ethers file contains the correct Ethernet address and that the print server name matches the name in the etc hosts file 5 If you used bootp make sure that you started the bootp daemon on any UNIX workstation and bootp is enabled i e the is removed from the bootp entry in the etc bootptab file is correctly configured 6...

Page 271: ...dd the line mx 0 to your etc printcap file entry 11 If you cannot print from DEC TCP IP Service for VMS UCX make sure that you have version 2 0B or later of this software because earlier versions will not work with Brother print servers 8 5 Windows NT LAN Server TCP IP Troubleshooting If you are having trouble printing with Windows NT or LAN Server check the following 1 Make sure that TCP IP and T...

Page 272: ...ed This happens on some Windows 95 98 Me NT 4 0 2000 XP computers Press the ALT and TAB keys to make it appear 2 Make sure that the print server is configured to be in the same workgroup or domain as the test of your computers It may take several minutes for the print server to appear in the network neighborhood 8 9 Internet Print TCP IP Troubleshooting 1 The first step in troubleshooting is to ma...

Page 273: ...the print server does not appear in the list of attached servers then check the following NOTE It is always a good idea to try followings in order to eliminate the possibility of setup errors Turn the printer off and then on again to force the printer to rescan the Netware queue Delete and recreate the print server and create a new print queue in order to eliminate the possibility of setup errors ...

Page 274: ...3 Apple TCP IP Printing System 8 6 or later 1 From system 8 6 or later Apple introduced the Desktop Printer Utility This utility allows TCP IP printing from a Macintosh which has the USB interface 2 From the Internet Printer dialogue please ensure that you enter the correct service name in the Queue option For example for NC 4100h series network cards enter BRN_xxxxxx_P1_AT where xxxxxx is the las...

Page 275: ...device is not spooled type SET DEVICE SPOOL LTAxxx command One exception PATHWORKS for MACINTOSH queues should not be set up with the LTA device set as spooled 7 Make sure that PROCESSOR LATSYM is enabled on your VMS print queue if you get any of the following symptoms z The queue pauses when you power off the print server for no apparent reason z The print server generates excessive LAT traffic o...

Page 276: ...e associated with the print server service name exactly matches the name of the print queue that was configured using the MSERVICE or MANAGE utility on the file server 6 Check to see that you have not exceeded the user limit on your Banyan file server because the print server must login as a user that printing is enabled on the queue and that there are no security restrictions on the file server t...

Page 277: ...The LCD will display the following message LT MX or DX is displayed when the optional lower tray the mailbox or the duplex unit is installed into the printer NOTE For exiting the line inspection mode press the Back switch at any sub menu 2 Check LCD and LED display condition Press the Set switch to check if the LCD comes on as follows Confirm that all the LEDs turn on The model with buzzer Confirm...

Page 278: ...5 Check sensors Press the Set switch Change status of the sensors and the following characters appear if the each sensor in the printer is functioning correctly A Eject sensor B Multi purpose tray paper empty sensor C Tray paper empty sensor D Rear cover sensor E Cover open sensor F Toner empty sensor 6 Check scanners Press the Set switch The LCD will display the following message The automatic co...

Page 279: ...lected for the paper size in the paper tray which is displayed in the LCD 1 NOTRAY 2 LEGAL ID 3 3 A6 ID 1 4 A4 LTR ID 1 Use the Set switch to select the type of the tray Status of Tray 2 3 and 4 will be displayed if they are installed Refer to subsection 4 PRINTING METHODS in CHAPTER 2 for the tray ID switch NOTE The backlight turns red when paper empty is detected and it remains green if paper em...

Page 280: ...ront and in back There is a problem in installing the jig There is a problem with the motor 16 Exit the line test mode Press the Set switch to exit the line test mode 17 Remove the Jig 18 Remove the Developer 19 Turn off the power CARD1 R W START CARD1 R W OK CARD1 R W ERROR NO FLASH CARD1 Checks reading writing on Card 1 ID The flash card works correctly There is a problem in reading writing from...

Page 281: ...switch and the Set switch Professional Menu mode See section 2 PROFESSIONAL MENU MODE in this chapter 2 Power on While holding down the Go switch press the switch once and then the Set switch Service Menu mode See section 3 SERVICE MENU MODE in this chapter 3 Power on and press the specified switch es and others See section 4 OTHER HIDDEN FUNCTION MENUS in this chapter ...

Page 282: ... items using the switches To go back to a higher level select the exit menu in the same level using the switches Inputting a Value or Setting for a Professional Menu Mode Enter the required mode as explained above The setting appearing on the display is the current setting Select the required setting using the switches then press the Set switch The previous value remains if the Set switch is not p...

Page 283: ...d in LaserJet emulation PRIMARY FONT FONT ID Saves the current primary fonts in LaserJet emulation into the storage devices CompactFlash or HDD SECONDARY FONT FONT ID Saves the current secondary fonts in LaserJet emulation into the storage devices CompactFlash or HDD DOWNLOAD FONT FONT ID Saves the downloaded fonts in LaserJet emulation into the storage devices CompactFlash or HDD SAVE MACRO MACRO...

Page 284: ...ET MODE IBM E1H Esszet Places Esszet on E1h of IBM character set IBM E1H Beta Places Beta on E1h of IBM character set W BOLD ON OFF W BOLD OFF W BOLD ON ON Makes a reprinted character bold Print speed would get slow DLFNT Bd It DLFNT Bd It NO DLFNT Bd It YES YES Creates bold and italic font from download fonts B PROD ON OFF B PROD ON B PROD OFF ON Creates bold and italic font from bitmap fonts CON...

Page 285: ...ted Epson IBM Emulation mode ITA ITALIC SEL Uses the upright font to have italic as scalable font is selected exit FONT PAPER TRAY SIZE DEF PAPER A4 Printers to be shipped to the other area than USA and Canada have the A4 size setting by default DEF PAPER LT Printers to be shipped to USA and Canada have the Letter size setting by default PARALLEL MENU PARALLEL TIMING CDCC PSW H BUSY signal gets hi...

Page 286: ...e receiving data buffer of the printer XOFF TGM NORMAL This is chosen by default XOFF TMG 11K Send out Xoff at 11k bytes of the free space remaining XOFF TMG 21K Send out Xoff at 21k bytes of the free space remaining XOFF TMG 101K Send out Xoff at 101k bytes of the free space remaining exit SERIAL REPRINT ON OFF REPRINT ON Follows the user menu s setting which selects either enabling or disabling ...

Page 287: ...RESO NO Does not reduce the resolution automatically PS300RESO IF 2M Reduces the resolution to 300dpi when the total memory is 2Mbytes PS300RESO FORCE Reduces the resolution to 300dpi COPY PAGES COPY PAGES ON COPY PAGES OFF OFF 1 page is fixed for the copy page number PANEL RESET MODE RESET NORMAL RESET JOB JOB Changes reset printer function to job cancel function JOB TIMEOUT SEL TIMEOUT ON PJL JO...

Page 288: ...NARY OFF APPLEUSBPS BINAY ON Enables to print PS Pure Binary data via Mac USB MPTRAY YADJUST PCTRAY YADJUST DUPLEX YADJUST MPTRAY XADJUST T1TRAY XADJUST T2TRAY XADJUST T3TRAY XADJUST MP CAS ADJUST T4TRAY XADJUST Adjusts the position of starting scanning in each paper tray 100 to100 dot 300dpi Net Heap Size HeapSize xxxxK Changes the size of Heap size area used in BR Net K byte CLEAR CACHE OFF PS F...

Page 289: ...NT Displays the number of printing pages JAM COUNT Displays the number of jam occurrence REPLACE COUNT TONER Displays the number of the toner cartridge unit replacement DRUM UNIT Displays the number of the drum unit replacement PF KIT MP PF KIT 1 PF KIT 2 PF KIT 3 PF KIT 4 Displays the number of the PF kit replacement PF kit MP 1 2 3 4 PF kit for MP Tray Tray 1 Tray 2 Tray 3 Tray4 FUSER UNIT Displ...

Page 290: ...rors in order of newest to the oldest NOTE COVER OPEN and NVRAM ERROR are not displayed in the history If an error occurs consecutively it will be displayed only once LIFE PERIOD DRUM UNIT Displays the drum unit life period PF KIT Displays the PF kit life period FUSER UNIT Displays the fixing unit life period LASER UNIT Displays the laser unit life period DEVELOPER Displays the Developer life peri...

Page 291: ... UNIT Displays the number of the fixing unit replacement MODIFY COUNT REMAIN LIFE DRUM UNIT Displays the drum unit remaining life counters PF KIT MP PF KIT 1 PF KIT 2 PF KIT 3 PF KIT 4 Displays the PF kit remaining life counters PF kit MP 1 2 3 4 PF kit for MP Tray Tray 1 Tray 2 Tray 3 Tray 4 FUSER UNIT Displays the fixing unit remaining life counters LASER UNIT Displays the laser unit remaining l...

Page 292: ... 20 SIDE TEMPER THICK PAPER Adjusts the toner fixing temperature for thick paper 15 10 5 0 5 10 15 or 20 PLAIN PAPER Adjusts the toner fixing temperature for plain paper 15 10 5 0 5 10 15 or 20 TRANSPARENCIES Adjusts the toner fixing temperature for transparencies 15 10 5 0 5 10 15 or 20 ENVELOPES Adjusts the toner fixing temperature for envelopes 15 10 5 0 5 10 15 or 20 PPDS SUBSET ON OFF SUPPORT...

Page 293: ...FF automatically when the printing data is sent to the printer Reprint Continuously print the test pattern sheet Back PCB ONLY Mode Ignores the printer error such as COVER OPEN and starts by main PCB HEX DUMP MODE Hex dump mode Printer reset is needed to exit this function Version check Set Clears NVRAM This function is not normally used Set Back Rewrites the data on the ROM Go DRAM CHECK START Ch...

Page 294: ...the switches then press the Set switch See subsection 2 PERIODICAL REPLACEMENT PARTS in CHAPTER 5 for more information about the periodical replacement parts Title Subtitle Description PF KITMP RESET PARTS LIFE PF KIT1 PF KIT2 PF KIT3 PF KIT4 Initializes the counter of the paper feeding kit to zero PF kit MP 1 2 3 4 PF kit for MP Tray Tray 1 Tray 2 Tray 3 Tray 4 FUSER UNIT Initializes the counter ...

Page 295: ...A 1 APPENDIX 1 CONNECTION DIAGRAM HL 7050 ...

Page 296: ...APPENDIX 2 MAIN PCB CIRCUIT DIAGRAM HL 7050 1 9 ...

Page 297: ...APPENDIX 3 MAIN PCB CIRCUIT DIAGRAM HL 7050 2 9 ...

Page 298: ...APPENDIX 4 MAIN PCB CIRCUIT DIAGRAM HL 7050 3 9 ...

Page 299: ...A 5 APPENDIX 5 MAIN PCB CIRCUIT DIAGRAM HL 7050 4 9 CODE NAME LJ9004001 B512149 CIR 4 9 ...

Page 300: ...A 6 APPENDIX 6 MAIN PCB CIRCUIT DIAGRAM HL 7050 5 9 CODE NAME LJ9004001 B512149 CIR 5 9 ...

Page 301: ...A 7 APPENDIX 7 MAIN PCB CIRCUIT DIAGRAM HL 7050 6 9 CODE NAME LJ9004001 B512149 CIR 6 9 ...

Page 302: ...A 8 APPENDIX 8 MAIN PCB CIRCUIT DIAGRAM HL 7050 7 9 CODE NAME LJ9004001 B512149 CIR 7 9 ...

Page 303: ...A 9 APPENDIX 9 MAIN PCB CIRCUIT DIAGRAM HL 7050 8 9 CODE NAME LJ9004001 B512149 CIR 8 9 ...

Page 304: ...A 10 APPENDIX 10 MAIN PCB CIRCUIT DIAGRAM HL 7050 9 9 CODE NAME LJ9004001 B512149 CIR 9 9 ...

Page 305: ...A 11 APPENDIX 11 ENGINE PCB CIRCUIT DIAGRAM HL 7050 1 3 CODE NAME LJ9016001 B512139 CIR 1 3 ...

Page 306: ...A 12 APPENDIX 12 ENGINE PCB CIRCUIT DIAGRAM HL 7050 2 3 CODE NAME LJ9016001 B512139 CIR 2 3 ...

Page 307: ...A 13 APPENDIX 13 ENGINE PCB CIRCUIT DIAGRAM HL 7050 3 3 CODE NAME LJ9016001 B512139 CIR 3 3 ...

Page 308: ...A 14 APPENDIX 14 LOW VOLTAGE POWER SUPPLY CIRCUIT DIAGRAM 100V HL 7050 1 2 NAME Low voltage PS Circuit 100V ...

Page 309: ...A 15 APPENDIX 15 LOW VOLTAGE POWER SUPPLY CIRCUIT DIAGRAM 200V HL 7050 2 2 NAME Low voltage PS Circuit 200V ...

Page 310: ...ber ID for year 2 2002 3 2003 ID for factory 9 Kariya Plant A Mie Brother C BIUK J Buji Nan Ling Factory 1 Printer Printed on the label attached on the rear of the main body U 6 0 3 3 8 J 2 J 1 1 1 1 0 1 2 Toner cartridge consumable Sealed up in aluminum bag 2 J 0 1 X X printed on aluminum bag J 2 9 0 X X X X printed on the label attached on the toner cartridge YEAR MONTH DATE MODEL NO MONTH YEAR ...

Page 311: ... 4 Drum unit with toner cartridge Attachment Sealed up in aluminum bag 2 J 0 1 X X printed on aluminum bag 5 Laser unit On the laser unit 1 3 0 0 1 PRODUCTION LOT NO LASER UNIT NO 9 LJ0379001 Scanner Unit FACTORY ID NO 1 Kariya Plant 2 Buji Nan Ling Factory YEAR MONTH FACTORY ID NO SERIAL NO YEAR MONTH DATE PRODUCTION LINE NO 5 DR ...

Page 312: ...ller φ 13 8 mm 43 3 mm 2 Paper Feed Roller φ 14 0 mm 44 0 mm 3 Transfer Roller φ 17 7 mm 55 6 mm 4 Photosensitive Drum φ 29 97 mm 94 1 mm 5 Heat Roller φ 34 32 mm 107 8 mm 6 Pressure Roller φ 35 0 mm 110 mm 7 Development Roller φ 20 0 mm 43 2 mm The circumference of Development Roller is not in agreement with the numerical value which applied the circular constant to the diameter ...

Page 313: ...gal A4Long Letter A4 Executive B5 A5 B6 A6 Envelope Transparency 24 28 28 28 28 28 28 Regular 24 28 28 28 28 28 28 Thick paper 24 28 28 28 28 28 28 Thicker paper 24 28 28 28 28 28 28 Bond paper 24 28 28 28 28 28 28 Envelope 14 Thin paper 24 28 28 28 28 28 28 2 Print speeds ppm when loading paper from the optional lower tray LT 7000 Lower Tray 1 Lower Tray 2 3 Paper type Legal A4Long Letter A4 Exec...

Page 314: ... Envelope Transparency Regular 24 28 28 Thick paper Thicker paper Bond paper 24 28 28 Envelope Thin paper 24 28 28 NOTE When a smaller size paper than A4 or Letter is printed the temperature on both edges of the fixing unit is much higher than the temperature on the center of the unit where the paper is fed depending on the setting or model Therefore the print speed is slowed in order to decrease ...

Page 315: ...E in CHAPTER 7 1 Printing out the Print Configuration Page 1 Press the Set switch three times 2 Print the Print Configuration page 3 pages with the network card fitted 2 How to Read the Page counter the Parts Life The page counter is printed on page two in the top left hand corner of the Print Configuration page Refer to the figure below Parts remaining life is shown on page two of the print confi...

Page 316: ...APPENDIX A 22 Fig A 2 Page counter is printed here This not printed in some countries ...

Page 317: ...ool instructs you how to clear the problem such as The printer can t print or The printer prints garbage or incorrect fonts 1 When you start the program the Help dialog box shown below appears Fig A 3 2 Select the problem you have had then the specified window appears 3 Follow the instructions that appear on the PC screen If the problem cannot be solved start the Diagnostics tool to create a log f...

Page 318: ...heck if you can clear the problem using the Troubleshooting for printer won t print tool described in the previous section 1 When you start the program the dialog box shown below appears Follow the steps described in the box then click the OK button Fig A 4 2 The message below appears click the OK button if you want to check whether there is any incorrect data or not If you do not want to check it...

Page 319: ...ck the result that the printer reported and click the A B or C button depending on the result 5 The created log file is shown on the PC screen The software will ask whether you wish to print the log file or not Send the log file created with this tool to investigate the problem to the authorized service center ...

Page 320: ...er information such as printer version or page counter for all models only when the printer is connected to a parallel port 1 When you start the program the dialog box shown below appears Fig A 7 2 Select the LPT port you are using and click the OK button 3 The dialog box below appears and indicates from top to bottom the printer ID version fixing unit life PF kit life laser unit life and transfer...

Page 321: ...from 400V to 300V when 5 000 pages are printed It is switched to 400V again when the toner cartridge is replaced following the TONER LIFE END error message Counted from the number of the drum rotation in non continuous printing Fixing temperature Transparency 170 C Thin paper 185 C Regular paper 208 C 195 C when printing using duplex function Thick paper 220 C Thicker Bond paper 220 C in non conti...

Page 322: ...e optional LT 7000 Lower Tray Unit is installed onto the HL 7050 printer it is necessary to exchange the cassette supplied with the LT 7000 Unit with the upper cassette already fitted into the printer Install the cassette originally fitted in the printer into the LT 7000 Unit Failure to do so will cause paper jams as the paper cannot be fed from the lower tray to the printer body because the plast...

Page 323: ... Relatively poor solder wettability and spread difficult to wet and spread and hard Appearance dull and grainy surface different from that of conventional solder Relatively poor wettability rough surface bumps are likely to be formed and solder dragging Poor solder elevation Poor thermal conductivity and heat resistant difficult to melt 2 Metal composition wire solder The metal composition of lead...

Page 324: ...for exclusive use with lead free solder must only be used a soldering iron used for soldering with tin lead solder must not be used with lead free solder The use of soldering irons designed for lead free solder is desirable see 7 Soldering iron below 4 The requirement for the temperature of the soldering iron s tip is the same as that for soldering using conventional solder the temperature of the ...

Page 325: ...er is higher than that of conventional solder so productivity will decrease with conventional soldering irons Some tool manufacturers sell soldering irons designed for lead free solder and that can maintain the productivity of the soldering operations The soldering irons used at BIL are model no 941 manufactured by HAKKO and M6 SIC 40 manufactured by BONKOTE The prices of these soldering irons for...

Page 326: ... at Brand New Toner Cartridge 345 5g Toner Cartridge Weight at Toner Near Empty 865g Remain Toner Weight at Toner Near Empty 135g Toner Cartridge Weight at Toner Empty 850g Remain Toner Weight at Toner Empty 120g You can print 500 to 600 pages with 10g toner Without yellow protector Toner cartridge weight may vary within 2 to 3g depending on the cartridge weight ...

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