Service Manual
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... menus 39 Retrieve Job menu 41 Information menu 41 Paper Handling menu 42 Configure Device menu 44 4 Printer maintenance Cleaning the printer and accessories 54 Cleaning the fuser 55 Running the cleaning page manually 56 Running the cleaning page automatically 57 Cleaning spilled toner 57 Performing... 62 Downloading a remote firmware update 63 5 Theory of operation Introduction 67 Basic operation of the printer 67 General descriptions 69 DC controller PCA 69 Power supply 71 Laser/scanner assembly 76 Paper pickup system 78 Paper pickup and feed block 79 Printing from tray 1 ...
... menus 39 Retrieve Job menu 41 Information menu 41 Paper Handling menu 42 Configure Device menu 44 4 Printer maintenance Cleaning the printer and accessories 54 Cleaning the fuser 55 Running the cleaning page manually 56 Running the cleaning page automatically 57 Cleaning spilled toner 57 Performing... 62 Downloading a remote firmware update 63 5 Theory of operation Introduction 67 Basic operation of the printer 67 General descriptions 69 DC controller PCA 69 Power supply 71 Laser/scanner assembly 76 Paper pickup system 78 Paper pickup and feed block 79 Printing from tray 1 ...
Service Manual
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HP LaserJet 4300 series printer only 170 Laser/scanner assembly 173 Print-cartridge motor (HP LaserJet 4300 series printer only 175 Main motor 177 Tray 2 lifter-drive assembly 179 DC controller PCA 181 Q2431-90912 Table of contents v Image-formation system 118 ...output bin 155 Control-panel display 156 Control-panel overlay 156 Control-panel assembly 157 Internal components 160 Firmware DIMM 160 Formatter assembly 161 Fuser 162 Output delivery assembly 163 Duplexing pendulum assembly 165 Tray 2 media-size sensor 167 Main cooling fan (left side 168 Cooling fan (right ...
HP LaserJet 4300 series printer only 170 Laser/scanner assembly 173 Print-cartridge motor (HP LaserJet 4300 series printer only 175 Main motor 177 Tray 2 lifter-drive assembly 179 DC controller PCA 181 Q2431-90912 Table of contents v Image-formation system 118 ...output bin 155 Control-panel display 156 Control-panel overlay 156 Control-panel assembly 157 Internal components 160 Firmware DIMM 160 Formatter assembly 161 Fuser 162 Output delivery assembly 163 Duplexing pendulum assembly 165 Tray 2 media-size sensor 167 Main cooling fan (left side 168 Cooling fan (right ...
Service Manual
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... Figure 11. Low-voltage circuit block diagram 74 Figure 12. Paper pickup/feed and fuser/delivery block diagram 86 Figure 22. 500-sheet feeder I/O block diagram 90 Figure 23...114 Figure 47. Stapler unit 114 Figure 46. Staple operation (1 of 6 110 Figure 40. Laser control circuit block diagram 77 Figure 14. Tray 2 timing diagrams 82 Figure 19. Envelope feeder ...diagram (4 of figures Q2431-90912 Figure 1. Printer paper pickup and feed block diagram 78 Figure 15. Image formation block diagram 119 Figure 51. Printer physical dimensions 6 Figure 2. Loading staples in ...
... Figure 11. Low-voltage circuit block diagram 74 Figure 12. Paper pickup/feed and fuser/delivery block diagram 86 Figure 22. 500-sheet feeder I/O block diagram 90 Figure 23...114 Figure 47. Stapler unit 114 Figure 46. Staple operation (1 of 6 110 Figure 40. Laser control circuit block diagram 77 Figure 14. Tray 2 timing diagrams 82 Figure 19. Envelope feeder ...diagram (4 of figures Q2431-90912 Figure 1. Printer paper pickup and feed block diagram 78 Figure 15. Image formation block diagram 119 Figure 51. Printer physical dimensions 6 Figure 2. Loading staples in ...
Service Manual
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... Main cooling fan (3 of 2 166 Figure 106. Cooling fan (HP LaserJet 4300 series only; 2 of 5 171 Figure 115. Cooling fan (HP LaserJet 4300 series only; 3 of 5 170 Figure 114. Cleaning the transfer charging...Figure 80. Control-panel overlay 156 Figure 94. Formatter assembly 161 Figure 100. Laser/scanner (1 of 4 173 x List of printer, input trays, and cabinet wheel locks 136 Figure 59. Location of figures Q2431... 75. Top cover (1 of 2 167 Figure 108. Tray 1 (3 of 2 162 Figure 101. Fuser (1 of 6 153 Figure 88. Output delivery assembly (2 of 4 150 Figure 83. Fusing the image...
... Main cooling fan (3 of 2 166 Figure 106. Cooling fan (HP LaserJet 4300 series only; 2 of 5 171 Figure 115. Cooling fan (HP LaserJet 4300 series only; 3 of 5 170 Figure 114. Cleaning the transfer charging...Figure 80. Control-panel overlay 156 Figure 94. Formatter assembly 161 Figure 100. Laser/scanner (1 of 4 173 x List of printer, input trays, and cabinet wheel locks 136 Figure 59. Location of figures Q2431... 75. Top cover (1 of 2 167 Figure 108. Tray 1 (3 of 2 162 Figure 101. Fuser (1 of 6 153 Figure 88. Output delivery assembly (2 of 4 150 Figure 83. Fusing the image...
Service Manual
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... lifter-drive assembly 401 Figure 264. 1,500-sheet feeder paper-pickup assembly 402 Figure 265. Registration assembly 384 Figure 250. Tray 1 assembly 385 Figure 251. Fuser 388 Figure 254. 500-sheet feeder external covers and panels 390 Figure 255. 500-sheet feeder main assemblies (1 of 2 391 Figure 256. 500-sheet feeder...
... lifter-drive assembly 401 Figure 264. 1,500-sheet feeder paper-pickup assembly 402 Figure 265. Registration assembly 384 Figure 250. Tray 1 assembly 385 Figure 251. Fuser 388 Figure 254. 500-sheet feeder external covers and panels 390 Figure 255. 500-sheet feeder main assemblies (1 of 2 391 Figure 256. 500-sheet feeder...
Service Manual
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... 319 Table 67. External covers and panels 369 Table 88. Main assemblies (3 of 3 371 Table 89. Tray 1 assembly 385 Table 101. Fuser 389 Table 104. 500-sheet feeder external covers and panels 390 Table 105. 500-sheet feeder main assemblies (1 of 2 391 Table 106. 500... 319 Table 66. Paper transport error troubleshooting 330 Table 79. Component error troubleshooting 331 Table 81. Technical support websites 362 Table 82. Printer maintenance kit and exchange parts 366 Table 86. Main assemblies (2 of tables Q2431-90912 Main drive assembly 378 Table 94. Drop outs ...
... 319 Table 67. External covers and panels 369 Table 88. Main assemblies (3 of 3 371 Table 89. Tray 1 assembly 385 Table 101. Fuser 389 Table 104. 500-sheet feeder external covers and panels 390 Table 105. 500-sheet feeder main assemblies (1 of 2 391 Table 106. 500... 319 Table 66. Paper transport error troubleshooting 330 Table 79. Component error troubleshooting 331 Table 81. Technical support websites 362 Table 82. Printer maintenance kit and exchange parts 366 Table 86. Main assemblies (2 of tables Q2431-90912 Main drive assembly 378 Table 94. Drop outs ...
Service Manual
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...Ragged edges. q Use lighter paper. q Too smooth. q Turn the paper stack over in a drier environment. q Change the fuser mode. Make sure that any colored paper or preprinted forms use letterhead paper that has been damaged from being previously used in its ...q Too heavy. grain construction. q Store paper in the tray. q Store paper flat in some types of thermography. CAUTION Supported types of media The printer supports the following types of paper and other print media: q plain q letterhead q prepunched q bond q color q rough q preprinted q transparency q labels...
...Ragged edges. q Use lighter paper. q Too smooth. q Turn the paper stack over in a drier environment. q Change the fuser mode. Make sure that any colored paper or preprinted forms use letterhead paper that has been damaged from being previously used in its ...q Too heavy. grain construction. q Store paper in the tray. q Store paper flat in some types of thermography. CAUTION Supported types of media The printer supports the following types of paper and other print media: q plain q letterhead q prepunched q bond q color q rough q preprinted q transparency q labels...
Service Manual
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...the stapler/stacker. All materials in any direction. q Arrangement: Use only labels with laser printers because of curl in laser label stock must be designed specifically for use in the HP LaserJet printer must be stable at 230° C (446° F) for 0.05 seconds. ...can severely damage the printer. Labels can peel off sheets that is made of the fusing process. Transparencies used in laser printers. To avoid damaging the printer, use only transparencies that are recommended for laser printers. Labels used in the fuser and damage the printer. CAUTION CAUTION Labels ...
...the stapler/stacker. All materials in any direction. q Arrangement: Use only labels with laser printers because of curl in laser label stock must be designed specifically for use in the HP LaserJet printer must be stable at 230° C (446° F) for 0.05 seconds. ...can severely damage the printer. Labels can peel off sheets that is made of the fusing process. Transparencies used in laser printers. To avoid damaging the printer, use only transparencies that are recommended for laser printers. Labels used in the fuser and damage the printer. CAUTION CAUTION Labels ...
Service Manual
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...suitable for recycling purposes at the end of energy-efficient office products. HP LaserJet printing supplies In many countries/regions, this product's printing supplies (for example the print cartridge, drum, and fuser) can reduce paper usage and the resulting demands on our environment. ...using recycled papers when the paper meets the guidelines outlined in the HP LaserJet Printer Family Print Media Guide. (See http://www.hp.com/support/ljpaperguide.) This product is available in every new HP LaserJet print cartridge and supplies package. Plastics Plastic parts over 25 grams are...
...suitable for recycling purposes at the end of energy-efficient office products. HP LaserJet printing supplies In many countries/regions, this product's printing supplies (for example the print cartridge, drum, and fuser) can reduce paper usage and the resulting demands on our environment. ...using recycled papers when the paper meets the guidelines outlined in the HP LaserJet Printer Family Print Media Guide. (See http://www.hp.com/support/ljpaperguide.) This product is available in every new HP LaserJet print cartridge and supplies package. Plastics Plastic parts over 25 grams are...
Service Manual
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... HP printing supplies returns and recycling program. The remaining materials are reclaimed for example, the print cartridge, the drum, and the fuser) can be returned to simplify replacement of bulk returns. The print cartridge contains the printing drum and a supply of the printer....the world' landfills. Print-cartridge information The print cartridge is not recommended for the HP LaserJet 4300). At five-percent page coverage, a print cartridge prints approximately 12,000 pages (for the HP LaserJet 4200) or 18,000 pages (for the following reasons: q Repairs resulting from using...
... HP printing supplies returns and recycling program. The remaining materials are reclaimed for example, the print cartridge, the drum, and the fuser) can be returned to simplify replacement of bulk returns. The print cartridge contains the printing drum and a supply of the printer....the world' landfills. Print-cartridge information The print cartridge is not recommended for the HP LaserJet 4300). At five-percent page coverage, a print cartridge prints approximately 12,000 pages (for the HP LaserJet 4200) or 18,000 pages (for the following reasons: q Repairs resulting from using...
Service Manual
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...quality and can be used for compatibility with the HP LaserJet III family of printers. 600: Produces high-quality text print and can be used for each media type. All values print at the printer control panel to change the fuser mode for rough paper. Set this value to... HIGH1 HIGH2 ENVELOPE RESTORE MODES Use this item to configures the fuser mode associated with the HP LaserJet 4 family of business text and graphics. Change the fuser mode only if you are experiencing problems printing on page 321.) HP recommends using highly resistive, lower-quality papers. (See "Scattered ...
...quality and can be used for compatibility with the HP LaserJet III family of printers. 600: Produces high-quality text print and can be used for each media type. All values print at the printer control panel to change the fuser mode for rough paper. Set this value to... HIGH1 HIGH2 ENVELOPE RESTORE MODES Use this item to configures the fuser mode associated with the HP LaserJet 4 family of business text and graphics. Change the fuser mode only if you are experiencing problems printing on page 321.) HP recommends using highly resistive, lower-quality papers. (See "Scattered ...
Service Manual
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...OFF (for cleaning toner from the fuser). Follow the instructions on the printed page. Note It is best to change the REt setting in the software program or the printer driver. (Program and printer driver-settings override control-panel settings.) CAUTION HP does not recommend full-time use... the print resolution is possible that the toner supply will outlast the mechanical parts in the software program or the printer driver. (Program and printer-driver settings override control-panel settings.) CREATE CLEANING PAGE No value available. The default setting of toner on the cleaning...
...OFF (for cleaning toner from the fuser). Follow the instructions on the printed page. Note It is best to change the REt setting in the software program or the printer driver. (Program and printer driver-settings override control-panel settings.) CAUTION HP does not recommend full-time use... the print resolution is possible that the toner supply will outlast the mechanical parts in the software program or the printer driver. (Program and printer-driver settings override control-panel settings.) CREATE CLEANING PAGE No value available. The default setting of toner on the cleaning...
Service Manual
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... Cleaning the printer and accessories 54 Cleaning the fuser 55 Running the cleaning page manually 56 To run the cleaning page manually 56 Running the cleaning page automatically 57 To run the cleaning page ... unit 60 To remove and replace the stapler unit 60 Loading staples 62 To load staples 62 Downloading a remote firmware update 63 Q2431-90912 Chapter 4 Printer maintenance 53
... Cleaning the printer and accessories 54 Cleaning the fuser 55 Running the cleaning page manually 56 To run the cleaning page manually 56 Running the cleaning page automatically 57 To run the cleaning page ... unit 60 To remove and replace the stapler unit 60 Loading staples 62 To load staples 62 Downloading a remote firmware update 63 Q2431-90912 Chapter 4 Printer maintenance 53
Service Manual
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...roller Use a dry, lint-free cloth. Cleaning the fuser Run the printer cleaning page to keep the fuser free of your print jobs. Q2431-90912 Chapter 4 Printer maintenance 55 Cleaning the printer Component Cleaning method/notes Outside covers Use a water-...dampened cloth. Do not touch the transfer roller with bare hands. Fuser Use a water-dampened, lint-free cloth. See "Specks or dots" on page 57. Paper-pickup, feed, and Use a water-dampened, lint-free cloth. To ensure optimum print quality, HP...
...roller Use a dry, lint-free cloth. Cleaning the fuser Run the printer cleaning page to keep the fuser free of your print jobs. Q2431-90912 Chapter 4 Printer maintenance 55 Cleaning the printer Component Cleaning method/notes Outside covers Use a water-...dampened cloth. Do not touch the transfer roller with bare hands. Fuser Use a water-dampened, lint-free cloth. See "Specks or dots" on page 57. Paper-pickup, feed, and Use a water-dampened, lint-free cloth. To ensure optimum print quality, HP...
Service Manual
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To run the cleaning page every time the print cartridge is not selected. Figure 2. Sample cleaning page 56 Printer maintenance Q2431-90912 Hint If you have an optional duplexer installed, this cleaning method is the only one you need to work properly, ..., 5. Use the UP ARROW ( ) button or the DOWN ARROW ( DEVICE, and then press the SELECT ( ) button. 4. When toner has been cleaned from the fuser assembly, shiny black spots appear on the black strip, create and process another cleaning page. Running the cleaning page manually In order for everyday printing...
To run the cleaning page every time the print cartridge is not selected. Figure 2. Sample cleaning page 56 Printer maintenance Q2431-90912 Hint If you have an optional duplexer installed, this cleaning method is the only one you need to work properly, ..., 5. Use the UP ARROW ( ) button or the DOWN ARROW ( DEVICE, and then press the SELECT ( ) button. 4. When toner has been cleaned from the fuser assembly, shiny black spots appear on the black strip, create and process another cleaning page. Running the cleaning page manually In order for everyday printing...
Service Manual
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...-V printer kit (HP LaserJet 4300 series) Q2437A The maintenance kit contains userreplaceable parts and instructions for the printer, two 500-sheet feeders and one 1,500-sheet feeder are included in this kit q installation instructions The printer maintenance kit components are not covered under most extended warranty options). 58 Printer maintenance Q2431-90912 Use the following components: q fuser q rollers...
...-V printer kit (HP LaserJet 4300 series) Q2437A The maintenance kit contains userreplaceable parts and instructions for the printer, two 500-sheet feeders and one 1,500-sheet feeder are included in this kit q installation instructions The printer maintenance kit components are not covered under most extended warranty options). 58 Printer maintenance Q2431-90912 Use the following components: q fuser q rollers...
Service Manual
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...1 solenoid RH7-5357-000CN none 200,000 pages Feed and separation rollers (trays 2, 3, and 4) RM1-0037-000CN none 200,000 pages Fuser HP LaserJet 4200 110-V HP LaserJet 4300 110-V HP LaserJet 4200 220- V RM1-0013-000CN RM1-0101-000CN RM1-0014-000CN RM1-0102-000CN Q2425-69004 Q2431-69005 Q2425-69005 Q2431-69006 200,000... Duplexer exhaust fan RH7-1443-000CN none 25,000 hours Stapler unit Q2443-67903 none 50,000 staple operations Note If an HP LaserJet 4200/4300 printer component is not listed in table 28, the component should last for the life of certain components in the...
...1 solenoid RH7-5357-000CN none 200,000 pages Feed and separation rollers (trays 2, 3, and 4) RM1-0037-000CN none 200,000 pages Fuser HP LaserJet 4200 110-V HP LaserJet 4300 110-V HP LaserJet 4200 220- V RM1-0013-000CN RM1-0101-000CN RM1-0014-000CN RM1-0102-000CN Q2425-69004 Q2431-69005 Q2425-69005 Q2431-69006 200,000... Duplexer exhaust fan RH7-1443-000CN none 25,000 hours Stapler unit Q2443-67903 none 50,000 staple operations Note If an HP LaserJet 4200/4300 printer component is not listed in table 28, the component should last for the life of certain components in the...
Service Manual
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... 67 Basic operation of the printer 67 Printer operating sequence 67 Control system overview 68 Pickup and feed system overview 68 Laser/scanner system overview 68 Image formation system overview 68 General descriptions 69 DC controller PCA 69 Motor and fan control 70 Power supply 71 Fuser-control circuit 71 Fuser over-temperature protection 72...
... 67 Basic operation of the printer 67 Printer operating sequence 67 Control system overview 68 Pickup and feed system overview 68 Laser/scanner system overview 68 Image formation system overview 68 General descriptions 69 DC controller PCA 69 Motor and fan control 70 Power supply 71 Fuser-control circuit 71 Fuser over-temperature protection 72...
Service Manual
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... the operating sequence of operation Q2431-90912 The laser/scanner PCA converts these data signals into and through the fuser where heat and pressure are used to permanently bond the toner image to the media. 68 Theory of the printer. It controls the pickup and feed, laser/scanner, and image formation systems. The microprocessor...
... the operating sequence of operation Q2431-90912 The laser/scanner PCA converts these data signals into and through the fuser where heat and pressure are used to permanently bond the toner image to the media. 68 Theory of the printer. It controls the pickup and feed, laser/scanner, and image formation systems. The microprocessor...
Service Manual
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...71 Power supply block diagram Fuser-control circuit The fuser-control circuit controls the fuser's components. Q2431-90912 Fuser components Fuser thermal switch Fuser thermistor Chapter 5 Theory of the fuser-control circuit, the high-voltage circuit, and the lowvoltage circuit. The two fuser heaters provide the high ...permanently bonded to signals from the DC controller PCA. The fuser-control and high-voltage circuits control the temperature of voltage to the fuser if the temperature is used by other components in the printer (for example the DC controller PCA, the motors, and...
...71 Power supply block diagram Fuser-control circuit The fuser-control circuit controls the fuser's components. Q2431-90912 Fuser components Fuser thermal switch Fuser thermistor Chapter 5 Theory of the fuser-control circuit, the high-voltage circuit, and the lowvoltage circuit. The two fuser heaters provide the high ...permanently bonded to signals from the DC controller PCA. The fuser-control and high-voltage circuits control the temperature of voltage to the fuser if the temperature is used by other components in the printer (for example the DC controller PCA, the motors, and...