Service Manual
Page 51
...drum and a supply of refilled print cartridges during the warranty period or while the printer is under Hewlett-Packard warranty or maintenance contracts. q The print quality of HP LaserJet...HP LaserJet 4200) or 18,000 pages (for more pages when it is routinely used print cartridges and supplies, HP encourages the use by HP's resource and recovery partners. q Hewlett-Packard has no control over the actual print quality of the printer...30) or visit the HP LaserJet supplies http://www.hp.come/recycle website for the HP LaserJet 4300). Since 1990, the HP printing supplies returns and ...
...drum and a supply of refilled print cartridges during the warranty period or while the printer is under Hewlett-Packard warranty or maintenance contracts. q The print quality of HP LaserJet...HP LaserJet 4200) or 18,000 pages (for more pages when it is routinely used print cartridges and supplies, HP encourages the use by HP's resource and recovery partners. q Hewlett-Packard has no control over the actual print quality of the printer...30) or visit the HP LaserJet supplies http://www.hp.come/recycle website for the HP LaserJet 4300). Since 1990, the HP printing supplies returns and ...
Service Manual
Page 87
... through the printer, the laser/scanner system (which forms the latent image on until control system detects the page entering the printer (the page is detected by the top of time from the sequence (described below) until a print command host computer, or until the main motor or drum motor (HP LaserJet 4300 only) stops. Basic printer operating sequence...
... through the printer, the laser/scanner system (which forms the latent image on until control system detects the page entering the printer (the page is detected by the top of time from the sequence (described below) until a print command host computer, or until the main motor or drum motor (HP LaserJet 4300 only) stops. Basic printer operating sequence...
Service Manual
Page 90
... fans. Motor and fan control The HP LaserJet 4200 printer has three dc brushless motors. The fan motor rotates the fan blades. The print cartridge motor rotates the photo sensitive drum (the photosensitive drum used in the larger HP LaserJet 4300 print cartridge is used for image formation (rotating the photosensitive drum in the HP LaserJet 4200 printer). The lifter motor raises the plate...
... fans. Motor and fan control The HP LaserJet 4200 printer has three dc brushless motors. The fan motor rotates the fan blades. The print cartridge motor rotates the photo sensitive drum (the photosensitive drum used in the larger HP LaserJet 4300 print cartridge is used for image formation (rotating the photosensitive drum in the HP LaserJet 4200 printer). The lifter motor raises the plate...
Service Manual
Page 94
... Both biases are superimposed on the media from the power source (the wall receptacle the printer's power cord is supplied to the sensors and the DC controller PCA. The dc negative...drum. The fuser voltage (bias) prevents toner on one type of developing biases. For the HP LaserJet 4300 there are two types of fuser bias. Transfer dc positive bias is supplied to the laser/... image that the laser/scanner assembly created on the power supply. There are generated by the sub high-voltage circuit on the photosensitive drum. For the HP LaserJet 4200 there is applied ...
... Both biases are superimposed on the media from the power source (the wall receptacle the printer's power cord is supplied to the sensors and the DC controller PCA. The dc negative...drum. The fuser voltage (bias) prevents toner on one type of developing biases. For the HP LaserJet 4300 there are two types of fuser bias. Transfer dc positive bias is supplied to the laser/... image that the laser/scanner assembly created on the power supply. There are generated by the sub high-voltage circuit on the photosensitive drum. For the HP LaserJet 4200 there is applied ...
Service Manual
Page 144
...HP LaserJet 4300, a dc negative bias (charge) is applied to the fixing film and a dc positive bias (charge) is not necessary to supply power to the fixing film. Fusing the image The image is only held in place by electrostatic attraction when it . For the HP LaserJet 4200..., a dc negative bias (charge) is coated with fluorine for both printer models. Fusing the image 124 Theory of...smear it is transferred from the drum to produce a permanent image. Figure 55. To prevent offset images, the surface ...
...HP LaserJet 4300, a dc negative bias (charge) is applied to the fixing film and a dc positive bias (charge) is not necessary to supply power to the fixing film. Fusing the image The image is only held in place by electrostatic attraction when it . For the HP LaserJet 4200..., a dc negative bias (charge) is coated with fluorine for both printer models. Fusing the image 124 Theory of...smear it is transferred from the drum to produce a permanent image. Figure 55. To prevent offset images, the surface ...
Service Manual
Page 329
...on the page might have caused internal damage and toner spills can also be changed from the print-quality menu on or off from the printer driver or software application, because those settings override the control panel settings. q Check the print cartridge to turn EconoMode on the control panel...by up to make sure that the toner supply will outlast the mechanical parts in the cartridge to the drum. If EconoMode is possible to light for 12,000 (LaserJet 4200) and 18,000 (LaserJet 4300) images at five percent coverage. It is always used, it has been disassembled or refilled. If ...
...on the page might have caused internal damage and toner spills can also be changed from the print-quality menu on or off from the printer driver or software application, because those settings override the control panel settings. q Check the print cartridge to turn EconoMode on the control panel...by up to make sure that the toner supply will outlast the mechanical parts in the cartridge to the drum. If EconoMode is possible to light for 12,000 (LaserJet 4200) and 18,000 (LaserJet 4300) images at five percent coverage. It is always used, it has been disassembled or refilled. If ...
Service Manual
Page 340
...HP LaserJet 4300 printer. The fuser roller is defective. 2. See "Formatter assembly" on page 162. The print cartridge has passed its life expectancy. See "Fuser" on page 161. Formatter assembly. Replace the cartridge. q Clean the laser path. Clean or replace as necessary. This type of 12,000 pages for the HP LaserJet 4200 printer...Q2431-90912 Unstable laser beam or beam circuitry. Laser/scanner assembly. See "Laser/scanner assembly" on the drum, replace the print cartridge. 2. Cables between the DC controller PCA and the laser/scanner assembly. ...
...HP LaserJet 4300 printer. The fuser roller is defective. 2. See "Formatter assembly" on page 162. The print cartridge has passed its life expectancy. See "Fuser" on page 161. Formatter assembly. Replace the cartridge. q Clean the laser path. Clean or replace as necessary. This type of 12,000 pages for the HP LaserJet 4200 printer...Q2431-90912 Unstable laser beam or beam circuitry. Laser/scanner assembly. See "Laser/scanner assembly" on the drum, replace the print cartridge. 2. Cables between the DC controller PCA and the laser/scanner assembly. ...
Service Manual
Page 345
...see note)* 75.0 mm (2.95 inches) fuser (HP LaserJet 4200) Figure 207. 94.0 mm (3.75 inches) fuser (HP LaserJet 4300) 94.2 mm (3.75 inches) photosensitive drum Repetitive defect ruler Q2431-90912 Chapter 7 Troubleshooting 325 ...Repetitive defects Roller Distance between defects that correspond to the circumference of the way it is 62.83 mm (2.5 inches). Defects on the page. CAUTION Note Repetitive defects troubleshooting Defects on printer...
...see note)* 75.0 mm (2.95 inches) fuser (HP LaserJet 4200) Figure 207. 94.0 mm (3.75 inches) fuser (HP LaserJet 4300) 94.2 mm (3.75 inches) photosensitive drum Repetitive defect ruler Q2431-90912 Chapter 7 Troubleshooting 325 ...Repetitive defects Roller Distance between defects that correspond to the circumference of the way it is 62.83 mm (2.5 inches). Defects on the page. CAUTION Note Repetitive defects troubleshooting Defects on printer...