HP LaserJet 8150 Series Printer - User Guide
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If you do not have access to the Internet, call 1-404-329-2009 for a listing of the Toner Cartridge/Drum Material/Chemical Safety Data Sheets. Customers should call U.S. Appendix E Regulatory Information 502 Material Safety Data Sheet The Toner Cartridge/Drum material data safety sheet (MSDS) can be obtained by accessing the URL http://www.hp.com/go/msds and selecting the HP LaserJet icon. Material Safety Data Sheet Use Index number 7 for further information. Non-U.S. HP FIRST (fax-on-demand service) at 1-800-231-9300.
If you do not have access to the Internet, call 1-404-329-2009 for a listing of the Toner Cartridge/Drum Material/Chemical Safety Data Sheets. Customers should call U.S. Appendix E Regulatory Information 502 Material Safety Data Sheet The Toner Cartridge/Drum material data safety sheet (MSDS) can be obtained by accessing the URL http://www.hp.com/go/msds and selecting the HP LaserJet icon. Material Safety Data Sheet Use Index number 7 for further information. Non-U.S. HP FIRST (fax-on-demand service) at 1-800-231-9300.
Service Manual
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...Formatter System 184 DC Controller System 187 Laser and Scanner Drive 187 Paper Motion Monitoring and Control 187 Clutches 187 Engine Test Microswitch 188 Motors 188 Image Formation System 189 Toner Cartridge 190 Drum Cleaning 192 Drum Conditioning 193 Image Writing 194 Image ...Developing 196 Image Transferring and Media Separation 198 Image Fusing 199 Paper Paths and Components 200 Printer, Duplexer, and Envelope Feeder 200 Paper Size Switches (...
...Formatter System 184 DC Controller System 187 Laser and Scanner Drive 187 Paper Motion Monitoring and Control 187 Clutches 187 Engine Test Microswitch 188 Motors 188 Image Formation System 189 Toner Cartridge 190 Drum Cleaning 192 Drum Conditioning 193 Image Writing 194 Image ...Developing 196 Image Transferring and Media Separation 198 Image Fusing 199 Paper Paths and Components 200 Printer, Duplexer, and Envelope Feeder 200 Paper Size Switches (...
Service Manual
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...Side View 33 Front view of HP Digital Copier 34 Rear view of HP Digital Copier 34 Preferred Configuration 35 Digital Copier Tabletop Configuration 36 Sample Model and Serial Number Label for the printer 37 Paper Handling Devices and ...3-6 Figure 4-1 Figure 4-2 Figure 4-3 Figure 4-4 Figure 4-5 Figure 4-6 Figure 5-1 Figure 5-2 Figure 5-3 Figure 5-4 Figure 5-5 Figure 5-6 Figure 5-7 Figure 5-8 Figure 5-9 Copy System 29 Printer - EconoMode 186 Image Formation Block Diagram 189 Photosensitive Drum 191 Drum Cleaning 192 Primary Charging Roller 193 C4265-90907List of Figures xv
...Side View 33 Front view of HP Digital Copier 34 Rear view of HP Digital Copier 34 Preferred Configuration 35 Digital Copier Tabletop Configuration 36 Sample Model and Serial Number Label for the printer 37 Paper Handling Devices and ...3-6 Figure 4-1 Figure 4-2 Figure 4-3 Figure 4-4 Figure 4-5 Figure 4-6 Figure 5-1 Figure 5-2 Figure 5-3 Figure 5-4 Figure 5-5 Figure 5-6 Figure 5-7 Figure 5-8 Figure 5-9 Copy System 29 Printer - EconoMode 186 Image Formation Block Diagram 189 Photosensitive Drum 191 Drum Cleaning 192 Primary Charging Roller 193 C4265-90907List of Figures xv
Service Manual
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... in the HP LaserJet Printer Family Print Medias Guide. To ensure printer longevity, HP provides the following: Spare Parts and Consumables Availability Spare parts and consumable supplies for this product's toner cartridge/drum can call (1) (800) 340-2445 or contact the HP LaserJet Supplies Website at... http://ljsupplies.com/planetpartners. Paper The printer is not listed in the U.S., call the local HP Sales and Service Office for proper disposition...
... in the HP LaserJet Printer Family Print Medias Guide. To ensure printer longevity, HP provides the following: Spare Parts and Consumables Availability Spare parts and consumable supplies for this product's toner cartridge/drum can call (1) (800) 340-2445 or contact the HP LaserJet Supplies Website at... http://ljsupplies.com/planetpartners. Paper The printer is not listed in the U.S., call the local HP Sales and Service Office for proper disposition...
Service Manual
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... Index number 7 for appropriate phone numbers and information. Non-U.S. Material Safety Data Sheet The Toner Cartridge/Drum MSDS can be obtained by calling the U.S. For more information in the U.S., call (1) (800) 340-2445 or contact the HP LaserJet Supplies Website at the front of this user guide for a listing of the Toner Cartridge...
... Index number 7 for appropriate phone numbers and information. Non-U.S. Material Safety Data Sheet The Toner Cartridge/Drum MSDS can be obtained by calling the U.S. For more information in the U.S., call (1) (800) 340-2445 or contact the HP LaserJet Supplies Website at the front of this user guide for a listing of the Toner Cartridge...
Service Manual
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... from the driver software. Print Density Adjustment The high voltage power supply also controls the image density by varying the voltages applied to the photosensitive drum. Toner Cartridge Detection A toner level detector inside the toner cartridge is connected to the Transfer Roller. See the General Timing Diagram (figure 5-29 on the...
... from the driver software. Print Density Adjustment The high voltage power supply also controls the image density by varying the voltages applied to the photosensitive drum. Toner Cartridge Detection A toner level detector inside the toner cartridge is connected to the Transfer Roller. See the General Timing Diagram (figure 5-29 on the...
Service Manual
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Drum Ground Post Transfer Bias Primary Charging Roller Toner Registration/ Toner Sensor Developing Roller Bias Transfer Roller Fuser Bias Figure 5-4 High Voltage Power Supply Contacts 184 Chapter 5 Functional OverviewC4265-90907
Drum Ground Post Transfer Bias Primary Charging Roller Toner Registration/ Toner Sensor Developing Roller Bias Transfer Roller Fuser Bias Figure 5-4 High Voltage Power Supply Contacts 184 Chapter 5 Functional OverviewC4265-90907
Service Manual
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Image Formation System Laser printing requires the interaction of six steps: 1 Drum Cleaning 2 Drum Conditioning 3 Image Writing 4 Image Developing 5 Image Transferring and Media Separation 6 Image Fusing Figure 5-6 Image Formation Block Diagram 190 Chapter 5 Functional OverviewC4265-90907 The image formation process consists of several different technologies (such as electronics, optics, and electrophotographics) to provide a printed page. Each process functions independently and must be coordinated with the other printer processes.
Image Formation System Laser printing requires the interaction of six steps: 1 Drum Cleaning 2 Drum Conditioning 3 Image Writing 4 Image Developing 5 Image Transferring and Media Separation 6 Image Fusing Figure 5-6 Image Formation Block Diagram 190 Chapter 5 Functional OverviewC4265-90907 The image formation process consists of several different technologies (such as electronics, optics, and electrophotographics) to provide a printed page. Each process functions independently and must be coordinated with the other printer processes.
Service Manual
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... : • Upper: Primary Charge • Middle: Developing Bias • Lower: Toner Sensing/Toner Recognition C4265-90907Image Formation System 191 The toner cartridge contains the photosensitive drum, primary charging roller, developing station, toner cavity, and cleaning station. It houses the cleaning, conditioning, and developing steps of the Image Formation System.
... : • Upper: Primary Charge • Middle: Developing Bias • Lower: Toner Sensing/Toner Recognition C4265-90907Image Formation System 191 The toner cartridge contains the photosensitive drum, primary charging roller, developing station, toner cavity, and cleaning station. It houses the cleaning, conditioning, and developing steps of the Image Formation System.
Service Manual
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... OverviewC4265-90907 The OPC material becomes electrically conductive when exposed to light remain non-conductive and maintain their negative charge. The drum is written on the drum surface is exposed to the laser light beam, the negative charge in that area is electrically connected to the ground potential of non-toxic organic-photoconductive...
... OverviewC4265-90907 The OPC material becomes electrically conductive when exposed to light remain non-conductive and maintain their negative charge. The drum is written on the drum surface is exposed to the laser light beam, the negative charge in that area is electrically connected to the ground potential of non-toxic organic-photoconductive...
Service Manual
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As the drum rotates during printing, excess toner is in the waste toner receptacle inside the toner cartridge is removed from the drum surface and stored in contact with the surface of the drum at all times. Drum Cleaning The cleaning blade inside the toner cartridge. Figure 5-8 Drum Cleaning C4265-90907Image Formation System 193
As the drum rotates during printing, excess toner is in the waste toner receptacle inside the toner cartridge is removed from the drum surface and stored in contact with the surface of the drum at all times. Drum Cleaning The cleaning blade inside the toner cartridge. Figure 5-8 Drum Cleaning C4265-90907Image Formation System 193
Service Manual
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Drum Conditioning After the drum is physically cleaned, it is centered around a negative DC bias which changes according to the Print Density setting. Figure 5-9 Primary Charging Roller 194 Chapter 5 Functional OverviewC4265-90907 The AC current is conditioned by applying a uniform negative charge across the surface of the drum with an AC current that erases any residual charges, and produces a uniform drum surface potential. The primary charging roller is coated with conductive rubber, charged with the primary charging roller, located in the toner cartridge.
Drum Conditioning After the drum is physically cleaned, it is centered around a negative DC bias which changes according to the Print Density setting. Figure 5-9 Primary Charging Roller 194 Chapter 5 Functional OverviewC4265-90907 The AC current is conditioned by applying a uniform negative charge across the surface of the drum with an AC current that erases any residual charges, and produces a uniform drum surface potential. The primary charging roller is coated with conductive rubber, charged with the primary charging roller, located in the toner cartridge.
Service Manual
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...laser diode projects a beam onto a rotating six-sided scanning mirror. The beam sweeps across the drum and discharges the negative potential wherever it through a set of focusing lenses to synchronize the output of the drum... length of the drum and the drum is rotating, the...drum. This is directed through a slot on and off to diagnose problems with the laser diode or laser...drum rotates (see figure 5-10). The speed of the laser...drum) are synchronized, and each sweep, the beam strikes the beam detect lens, generating the Beam Detect (BD) signal. After the writing process, the drum...
...laser diode projects a beam onto a rotating six-sided scanning mirror. The beam sweeps across the drum and discharges the negative potential wherever it through a set of focusing lenses to synchronize the output of the drum... length of the drum and the drum is rotating, the...drum. This is directed through a slot on and off to diagnose problems with the laser diode or laser...drum rotates (see figure 5-10). The speed of the laser...drum) are synchronized, and each sweep, the beam strikes the beam detect lens, generating the Beam Detect (BD) signal. After the writing process, the drum...
Service Manual
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... This increases the repelling action of the toner against the areas of the developing cylinder. The toner particles are changed according to laser light. C4265-90907Image Formation System 197 Both the primary charging roller and developing cylinder DC bias voltages are attracted to the density ...setting. The toner is also changed in DC bias cause either more or less toner to be attracted to the drum, thus increasing or decreasing print density. The developing cylinder is centered around a fixed magnetic core. A rubber blade "brushes" the toner...
... This increases the repelling action of the toner against the areas of the developing cylinder. The toner particles are changed according to laser light. C4265-90907Image Formation System 197 Both the primary charging roller and developing cylinder DC bias voltages are attracted to the density ...setting. The toner is also changed in DC bias cause either more or less toner to be attracted to the drum, thus increasing or decreasing print density. The developing cylinder is centered around a fixed magnetic core. A rubber blade "brushes" the toner...
Service Manual
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Figure 5-11 Image Development 198 Chapter 5 Functional OverviewC4265-90907 The negatively charged toner is charged with a negative DC bias. The toner particles obtain a negative static charge by rubbing against the developing cylinder, which is attracted to the discharged (exposed, more positive) areas of the drum and repelled from the negatively charged (non-exposed) areas.
Figure 5-11 Image Development 198 Chapter 5 Functional OverviewC4265-90907 The negatively charged toner is charged with a negative DC bias. The toner particles obtain a negative static charge by rubbing against the developing cylinder, which is attracted to the discharged (exposed, more positive) areas of the drum and repelled from the negatively charged (non-exposed) areas.
Service Manual
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...This action keeps thin media from the drum. The static eliminator teeth also help separate the paper from the drum. Figure 5-12 Image Transferring and Media Separation C4265-90907Image Formation System 199 After separation, the drum is transferred to the media. The static... eliminator teeth weaken the attractive forces between the negatively charged drum surface and the positively charged paper. Image Transferring and Media Separation ...
...This action keeps thin media from the drum. The static eliminator teeth also help separate the paper from the drum. Figure 5-12 Image Transferring and Media Separation C4265-90907Image Formation System 199 After separation, the drum is transferred to the media. The static... eliminator teeth weaken the attractive forces between the negatively charged drum surface and the positively charged paper. Image Transferring and Media Separation ...
Service Manual
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.../PRNT signal from the Registration Assembly (by the Tray 1 Paper Present Sensor (PS1301). When the Laser/Scanner and Fuser are ready, the DC Controller sends the /VSREQ signal to the specified type, ...PCA. Then, the DC Controller activates the Pickup Solenoid (SL1) and starts feeding paper through the printer. C4265-90907Paper Paths and Components 205 The Tray 1 Feed Clutch (CL3) turns on page 203. ... through the PIU and is detected by CL1) and fed to the photosensitive drum, starting the image transfer and fusing processes. After the paper passes through the Fuser, it ...
.../PRNT signal from the Registration Assembly (by the Tray 1 Paper Present Sensor (PS1301). When the Laser/Scanner and Fuser are ready, the DC Controller sends the /VSREQ signal to the specified type, ...PCA. Then, the DC Controller activates the Pickup Solenoid (SL1) and starts feeding paper through the printer. C4265-90907Paper Paths and Components 205 The Tray 1 Feed Clutch (CL3) turns on page 203. ... through the PIU and is detected by CL1) and fed to the photosensitive drum, starting the image transfer and fusing processes. After the paper passes through the Fuser, it ...
Service Manual
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.../VDO signal from the Formatter PCA, the printer returns to power off. Printer Timing Period WAIT STBY (standby) INTR (initial rotation) PRNT (print) LSTR (last rotation) Timing Purpose From power on the photosensitive Motor stops. Stabilize the photosensitive drum sensitivity in the Envelope Feeder, Duplexer, 2000... READY the input of the printer events. If not, it returns to the media. See Chapter 7 for a description of each sensor and illustration of its locations). From the end of the WAIT or the LSTR period until the laser diode intensity has been stabilized....
.../VDO signal from the Formatter PCA, the printer returns to power off. Printer Timing Period WAIT STBY (standby) INTR (initial rotation) PRNT (print) LSTR (last rotation) Timing Purpose From power on the photosensitive Motor stops. Stabilize the photosensitive drum sensitivity in the Envelope Feeder, Duplexer, 2000... READY the input of the printer events. If not, it returns to the media. See Chapter 7 for a description of each sensor and illustration of its locations). From the end of the WAIT or the LSTR period until the laser diode intensity has been stabilized....
Service Manual
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For example, if the photosensitive drum is cold, the resistance of this manual. The printer is never exposed to ammonia fumes such as those produced by diazo copiers or office cleaning materials. The printer is not exposed to direct sunlight. Non-HP components (such as a warehouse, ... is using acceptable paper as specified in the HP LaserJet Printer Family Print Media Guide. The printer is positioned on a solid, level surface. The line voltage does not vary more than 10% from the printer. Leave the printer running for the printer and paper is within the temperature and humidity ...
For example, if the photosensitive drum is cold, the resistance of this manual. The printer is never exposed to ammonia fumes such as those produced by diazo copiers or office cleaning materials. The printer is not exposed to direct sunlight. Non-HP components (such as a warehouse, ... is using acceptable paper as specified in the HP LaserJet Printer Family Print Media Guide. The printer is positioned on a solid, level surface. The line voltage does not vary more than 10% from the printer. Leave the printer running for the printer and paper is within the temperature and humidity ...
Service Manual
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... 7-17. Does the problem repeat Use the Repetitive Defect Ruler in "Cleaning the Printer and Paper Handling Accessories" on page 651. Is the printer clean? Is the customer using the check list on the drum, replace the transfer roller. 650 Chapter 7 TroubleshootingC4265-90907 Quality Tables" on page ... you have a print sample? Image Quality Problem Action 1. on the drum or transfer roller? Is the problem on the page? 3. Ask the customer to determine where the defect is on page 50 and the HP LaserJet Family Paper Specification Guide. 6. Is the toner cartridge full Check the ...
... 7-17. Does the problem repeat Use the Repetitive Defect Ruler in "Cleaning the Printer and Paper Handling Accessories" on page 651. Is the printer clean? Is the customer using the check list on the drum, replace the transfer roller. 650 Chapter 7 TroubleshootingC4265-90907 Quality Tables" on page ... you have a print sample? Image Quality Problem Action 1. on the drum or transfer roller? Is the problem on the page? 3. Ask the customer to determine where the defect is on page 50 and the HP LaserJet Family Paper Specification Guide. 6. Is the toner cartridge full Check the ...