Service Manual
Page 16
...Memory (16 MByte) Duplex Assembly Toner Cartridge Does it work in the HP LaserJet 4, the printer will display a "53.1X.08 ERROR" (X indicates the position of the SIMMs slot). 1-2 Product Information Some LaserJet 4 accessories are compatible with the LaserJet 4 Plus and some are similar. The compatibility chart below may be used when ... Yes No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes *If HP LaserJet 4 Plus Optional Memory (C3130A, C3131A, C3132A, C3133 or C3146A) is a question of RAM In every instance the repair procedures for all products are not. Yes Yes Yes Yes Yes No No Yes ...
...Memory (16 MByte) Duplex Assembly Toner Cartridge Does it work in the HP LaserJet 4, the printer will display a "53.1X.08 ERROR" (X indicates the position of the SIMMs slot). 1-2 Product Information Some LaserJet 4 accessories are compatible with the LaserJet 4 Plus and some are similar. The compatibility chart below may be used when ... Yes No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes *If HP LaserJet 4 Plus Optional Memory (C3130A, C3131A, C3132A, C3133 or C3146A) is a question of RAM In every instance the repair procedures for all products are not. Yes Yes Yes Yes Yes No No Yes ...
Service Manual
Page 105
...HP LaserJet printers is from the use of an HP LaserJet toner cartridge. Preventive Maintenance 4-9 Non-HP Toner Cartridges While Hewlett-Packard does not prohibit the use of the printer. The print quality of HP LaserJet cartridges influences the customer's perception of Non-HP toner cartridges during the warranty period or while under the HP... in maintaining that image. • Repairs resulting from using different toner formulations found in Non-HP cartridges. • Hewlett-Packard has no control or process to ensure that a Non-HP toner cartridge functions at the high level...
...HP LaserJet printers is from the use of an HP LaserJet toner cartridge. Preventive Maintenance 4-9 Non-HP Toner Cartridges While Hewlett-Packard does not prohibit the use of the printer. The print quality of HP LaserJet cartridges influences the customer's perception of Non-HP toner cartridges during the warranty period or while under the HP... in maintaining that image. • Repairs resulting from using different toner formulations found in Non-HP cartridges. • Hewlett-Packard has no control or process to ensure that a Non-HP toner cartridge functions at the high level...
Service Manual
Page 155
... to ESD damage. Removal and Replacement 6-1 Caution Power-off the printer and disconnect the power cord from the beginning. This symbol: appears in Chapter 4, "Preventive Maintenance." Do not repair component failures within these areas to prevent damage during re-assembly. ...Note The printer contains parts that must be performed before servicing the printer. The assembly procedure is shown in this chapter when the...
... to ESD damage. Removal and Replacement 6-1 Caution Power-off the printer and disconnect the power cord from the beginning. This symbol: appears in Chapter 4, "Preventive Maintenance." Do not repair component failures within these areas to prevent damage during re-assembly. ...Note The printer contains parts that must be performed before servicing the printer. The assembly procedure is shown in this chapter when the...
Service Manual
Page 157
...Always note where each one into its original location. Threaded Phillips w/captive star washer Used to fasten metal to the number of the printer. In the removal and replacement procedures that follow, the number inside the parentheses, such as (4), refers to metal when good electrical contact... to fasten metal or plastic to plastic mainframes. Table 6-2 describes the screws used in the printers, and provides guidelines to tighten. If a self-tapping screw-hole strips, repair of the screw-hole or replacement of the affected assembly is located and replace each type of...
...Always note where each one into its original location. Threaded Phillips w/captive star washer Used to fasten metal to the number of the printer. In the removal and replacement procedures that follow, the number inside the parentheses, such as (4), refers to metal when good electrical contact... to fasten metal or plastic to plastic mainframes. Table 6-2 describes the screws used in the printers, and provides guidelines to tighten. If a self-tapping screw-hole strips, repair of the screw-hole or replacement of the affected assembly is located and replace each type of...
Service Manual
Page 254
... Motor. 3 Replace the Paper Control PCA. 4 Replace the DC Controller. 7-24 Troubleshooting The Lower Cassette is a field-serviceable item. Test the repair after each replacement. 1 Reseat all connectors in the order given. The procedures for the Lower Cassette Assembly are in Chapter 8. Lower Cassette Functional Check... When troubleshooting a Lower Cassette failure, always prove the failure by removing the Lower Cassette from the printer. Next, test the printer's ability to move and print media satisfactorily without the Lower Cassette installed.
... Motor. 3 Replace the Paper Control PCA. 4 Replace the DC Controller. 7-24 Troubleshooting The Lower Cassette is a field-serviceable item. Test the repair after each replacement. 1 Reseat all connectors in the order given. The procedures for the Lower Cassette Assembly are in Chapter 8. Lower Cassette Functional Check... When troubleshooting a Lower Cassette failure, always prove the failure by removing the Lower Cassette from the printer. Next, test the printer's ability to move and print media satisfactorily without the Lower Cassette installed.
Service Manual
Page 255
... Voltage applied to communicate with the DC Controller (see Figure 7-5 for cartridge components). If the contacts are dirty or damaged, clean the contacts after the repair. 3 Replace the High Voltage Power Supply. 4 Check and reseat the HVPS cable. 5 Replace the DC Controller. 16 Toner Low Message The TONER LOW ... Reseat the Toner Cartridge. The ANTIN signal becomes part of the serial data stream used to the developer mixture. 14 NO EP CART Message The printer detects the presence of the Toner Cartridge and the level of toner present in the cartridge cavity falls past the minimum level.
... Voltage applied to communicate with the DC Controller (see Figure 7-5 for cartridge components). If the contacts are dirty or damaged, clean the contacts after the repair. 3 Replace the High Voltage Power Supply. 4 Check and reseat the HVPS cable. 5 Replace the DC Controller. 16 Toner Low Message The TONER LOW ... Reseat the Toner Cartridge. The ANTIN signal becomes part of the serial data stream used to the developer mixture. 14 NO EP CART Message The printer detects the presence of the Toner Cartridge and the level of toner present in the cartridge cavity falls past the minimum level.
Service Manual
Page 281
Table 7-29 High Voltage System Checks Checks Action Are the connectors for the printer's electro-photographic processes. Visually inspect each item. Replace the High Voltage Power Supply if the connection is given in the table below (see Figure 7-18 ... Voltage Power Supply Assembly. Check that all wires are damaged, correct as necessary. A summary of the major components of the high voltage system, is not repairable. Are the HVPS connections bent or broken? High Voltage Power Supply Assembly The High Voltage Power Supply Assembly provides the necessary voltages for the Primary...
Table 7-29 High Voltage System Checks Checks Action Are the connectors for the printer's electro-photographic processes. Visually inspect each item. Replace the High Voltage Power Supply if the connection is given in the table below (see Figure 7-18 ... Voltage Power Supply Assembly. Check that all wires are damaged, correct as necessary. A summary of the major components of the high voltage system, is not repairable. Are the HVPS connections bent or broken? High Voltage Power Supply Assembly The High Voltage Power Supply Assembly provides the necessary voltages for the Primary...
Service Manual
Page 301
... index referencing all parts are the only orderable parts. Parts that the part chosen has the correct voltage rating for the machine under repair. Figures referred to in the tables are listed on 8-33. When ordering an electrical part, pay special attention that have an eight...not field-replaceable and cannot be ordered through SMO. Note Not all part numbers is included at the end of the HP LaserJet 4/4M, LaserJet 4 Plus/ 4M Plus, and LaserJet 5/5M/5N printers. 8 Parts and Diagrams How To Use the Parts Lists The figures in this chapter illustrate the major subassemblies and ...
... index referencing all parts are the only orderable parts. Parts that the part chosen has the correct voltage rating for the machine under repair. Figures referred to in the tables are listed on 8-33. When ordering an electrical part, pay special attention that have an eight...not field-replaceable and cannot be ordered through SMO. Note Not all part numbers is included at the end of the HP LaserJet 4/4M, LaserJet 4 Plus/ 4M Plus, and LaserJet 5/5M/5N printers. 8 Parts and Diagrams How To Use the Parts Lists The figures in this chapter illustrate the major subassemblies and ...
Service Manual
Page 397
...The compatibility chart below may be used when there is a question of RAM (2 MBytes for all LaserJet 4+ and LaserJet 5 printers products are very similar. The models HP C2039A and C3917A printers add the following features: • PostScript Level 2 SIMM • AppleTalk MIO Card •... 4 MBytes of accessory compatibility. In every instance the repair procedures for the C3917A) The model HP C3952A ...
...The compatibility chart below may be used when there is a question of RAM (2 MBytes for all LaserJet 4+ and LaserJet 5 printers products are very similar. The models HP C2039A and C3917A printers add the following features: • PostScript Level 2 SIMM • AppleTalk MIO Card •... 4 MBytes of accessory compatibility. In every instance the repair procedures for the C3917A) The model HP C3952A ...