Service Manual
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... Information 1-2 Identification 1-3 Specifications 1-5 HP LaserJet 4 and 4 Plus 1-5 Related Documentation 1-7 Safety Information 1-8 Product and Laser Safety 1-8 FCC RFI Statement 1-9 Laser Statement (Sweden/Finland 1-10 Toner Safety 1-11 Ozone Statement 1-11 Doing Business with HP 1-12 Technical Assistance 1-12 HP ASAP 1-800-333-1917 (U.S 1-12 HP FIRST 1-12 HP FIRST, U.S 1-12 HP FIRST, Europe 1-12 HP AUDIO-TIPS 1-13 HP CompuServe Forum 1-13...
... Information 1-2 Identification 1-3 Specifications 1-5 HP LaserJet 4 and 4 Plus 1-5 Related Documentation 1-7 Safety Information 1-8 Product and Laser Safety 1-8 FCC RFI Statement 1-9 Laser Statement (Sweden/Finland 1-10 Toner Safety 1-11 Ozone Statement 1-11 Doing Business with HP 1-12 Technical Assistance 1-12 HP ASAP 1-800-333-1917 (U.S 1-12 HP FIRST 1-12 HP FIRST, U.S 1-12 HP FIRST, Europe 1-12 HP AUDIO-TIPS 1-13 HP CompuServe Forum 1-13...
Service Manual
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... Board 3-59 Service / Error Messages 3-59 4 Preventive Maintenance Introduction 4-1 Life Expectancy of Consumables 4-2 Service Checkpoints 4-3 Cleaning Your Printer 4-4 Toner Cartridge 4-5 Saving Toner with EconoMode (HP LaserJet 4 Plus and 5 Only 4-6 Storing the Toner Cartridge 4-6 Installing the Toner Cartridge 4-7 Non-HP Toner Cartridges 4-9 Clearing the TONER LOW Message 4-10 Periodic Maintenance Procedures 4-11 Removing the MP Tray (Tray 1) Pickup Roller and Separation Pad...
... Board 3-59 Service / Error Messages 3-59 4 Preventive Maintenance Introduction 4-1 Life Expectancy of Consumables 4-2 Service Checkpoints 4-3 Cleaning Your Printer 4-4 Toner Cartridge 4-5 Saving Toner with EconoMode (HP LaserJet 4 Plus and 5 Only 4-6 Storing the Toner Cartridge 4-6 Installing the Toner Cartridge 4-7 Non-HP Toner Cartridges 4-9 Clearing the TONER LOW Message 4-10 Periodic Maintenance Procedures 4-11 Removing the MP Tray (Tray 1) Pickup Roller and Separation Pad...
Service Manual
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...MByte) Memory (2 MByte) Memory (4 MByte) Memory (8 MByte) Memory (16 MByte) Duplex Assembly Toner Cartridge Does it work in the HPLaserJet 4? Some LaserJet 4 accessories are compatible with the LaserJet 4 Plus and some are similar. The compatibility chart below may be used when there is a question of... HP LaserJet 4 Plus Optional Memory (C3130A, C3131A, C3132A, C3133 or C3146A) is the model HP C2039A to the model HP C2037A. Product Family Information The model HP C2021A is identical to the model HP C2001A from a hardware standpoint, as is installed in the HP LaserJet 4, the printer ...
...MByte) Memory (2 MByte) Memory (4 MByte) Memory (8 MByte) Memory (16 MByte) Duplex Assembly Toner Cartridge Does it work in the HPLaserJet 4? Some LaserJet 4 accessories are compatible with the LaserJet 4 Plus and some are similar. The compatibility chart below may be used when there is a question of... HP LaserJet 4 Plus Optional Memory (C3130A, C3131A, C3132A, C3133 or C3146A) is the model HP C2039A to the model HP C2037A. Product Family Information The model HP C2021A is identical to the model HP C2001A from a hardware standpoint, as is installed in the HP LaserJet 4, the printer ...
Service Manual
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Specifications HP LaserJet 4 and 4 Plus Table 1-3 Printer Dimensions Dimension HP LaserJet 4/4M (C2001A/C2021A) Width 16.4 in (416 mm) Depth 15.9 in (403 mm) Height 11.7 in (297 mm) Weight (with toner cartridge) 37 lbs. (18.3 kg) HP LaserJet 4 Plus HP LaserJet 4M Plus (C2037A/C2039A) 16.4 in (416 mm) 15.9 in (403 mm) 11.7 in (297 mm) 37 lbs. (18.3... = 55 220 Vac ± 10% 50/60 Hz ± 2 Hz printing = 195 240Vac ± 10% 50/60 Hz ± 2 Hz standby = 55 4 Plus/4M Plus printing = 300 standby = 80 PowerSave=25 printing =300 standby = 80 PowerSave=25 Product Information 1-5
Specifications HP LaserJet 4 and 4 Plus Table 1-3 Printer Dimensions Dimension HP LaserJet 4/4M (C2001A/C2021A) Width 16.4 in (416 mm) Depth 15.9 in (403 mm) Height 11.7 in (297 mm) Weight (with toner cartridge) 37 lbs. (18.3 kg) HP LaserJet 4 Plus HP LaserJet 4M Plus (C2037A/C2039A) 16.4 in (416 mm) 15.9 in (403 mm) 11.7 in (297 mm) 37 lbs. (18.3... = 55 220 Vac ± 10% 50/60 Hz ± 2 Hz printing = 195 240Vac ± 10% 50/60 Hz ± 2 Hz standby = 55 4 Plus/4M Plus printing = 300 standby = 80 PowerSave=25 printing =300 standby = 80 PowerSave=25 Product Information 1-5
Service Manual
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Table 1-6 Electrical Specifications Status 100/115 V 4/4M 4 Plus/4M Plus 220/240 V 4/4M 4 Plus/4M Plus Product Rating 6.4 amps 7.8 amps 3.1 amps 4.0 amps Peak Inrush Current 22 amps 22 amps 22 amps 22 amps 25% Decay Time 13 msec 18 ... 17 amps 22 amps Return-to Average Time 200 msec 200 msec 200 msec 200 msec Table 1-5 Environmental Specifications Operating Environment Storage Environment (not including toner cartridge) Temperature: 10° C to 32.5° C (50° F to 90.5° F) Humidity: 20-80% (no condensation) Temperature: -20° to 60° C (-4°...
Table 1-6 Electrical Specifications Status 100/115 V 4/4M 4 Plus/4M Plus 220/240 V 4/4M 4 Plus/4M Plus Product Rating 6.4 amps 7.8 amps 3.1 amps 4.0 amps Peak Inrush Current 22 amps 22 amps 22 amps 22 amps 25% Decay Time 13 msec 18 ... 17 amps 22 amps Return-to Average Time 200 msec 200 msec 200 msec 200 msec Table 1-5 Environmental Specifications Operating Environment Storage Environment (not including toner cartridge) Temperature: 10° C to 32.5° C (50° F to 90.5° F) Humidity: 20-80% (no condensation) Temperature: -20° to 60° C (-4°...
Service Manual
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...-to-white boundaries. The default setting is user selectable via a front panel key, a Printer Job Language (PJL) sequence using HP Explorer's Remote Control Panel or through application software. EconoMode (HP LaserJet 4 Plus and 5 only) The EconoMode setting uses approximately 50% less toner than standard mode printing by reducing dot density. EconoMode, Medium Density Normal Mode, Medium...
...-to-white boundaries. The default setting is user selectable via a front panel key, a Printer Job Language (PJL) sequence using HP Explorer's Remote Control Panel or through application software. EconoMode (HP LaserJet 4 Plus and 5 only) The EconoMode setting uses approximately 50% less toner than standard mode printing by reducing dot density. EconoMode, Medium Density Normal Mode, Medium...
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Memory Enhancement technology (MEt) (HP LaserJet 4 Plus and 5 only) HP Memory Enhancement technology (MEt) effectively doubles the printer's standard memory through HP Explorer's Remote Control Panel (Printer Memory Category). When printing graphics, MEt analyzes each page as it is only available in the display. 4 Press [+] or ... fonts for your selection was saved. 7 Press [On Line] to return the printer to active status. 8 Print approximately 20 pages to allow the new density setting to a higher number, toner is a measure of the darkness of these methods, Image Adapt and Page Protect,...
Memory Enhancement technology (MEt) (HP LaserJet 4 Plus and 5 only) HP Memory Enhancement technology (MEt) effectively doubles the printer's standard memory through HP Explorer's Remote Control Panel (Printer Memory Category). When printing graphics, MEt analyzes each page as it is only available in the display. 4 Press [+] or ... fonts for your selection was saved. 7 Press [On Line] to return the printer to active status. 8 Print approximately 20 pages to allow the new density setting to a higher number, toner is a measure of the darkness of these methods, Image Adapt and Page Protect,...
Service Manual
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... material is available from HP's Support Material Organization (SMO) for part number C2001-00906. This includes: • Toner Cartridge • Optional Lower Cassette • Envelope Feeder • Accessory Cartridge • Duplex Assembly (LaserJet 4 Plus/5) • Optional Memory, Personality SIMMs, or Flash • Include print samples that were installed in the printer. To order replacement packing...
... material is available from HP's Support Material Organization (SMO) for part number C2001-00906. This includes: • Toner Cartridge • Optional Lower Cassette • Envelope Feeder • Accessory Cartridge • Duplex Assembly (LaserJet 4 Plus/5) • Optional Memory, Personality SIMMs, or Flash • Include print samples that were installed in the printer. To order replacement packing...
Service Manual
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... months including usage. EconoMode can be turned on or off via the printer control panel, through HP's Remote Control Panel or through a software application with the appropriate printer driver. The shelf life of an unopened cartridge package is printed on the... settings always override control panel selections. Saving Toner with EconoMode (HP LaserJet 4 Plus and 5 Only) Toner cartridge life can be extended dramatically by using the EconoMode printing feature of the printer. Storing the Toner Cartridge Do not remove the toner cartridge from direct sunlight or other strong light...
... months including usage. EconoMode can be turned on or off via the printer control panel, through HP's Remote Control Panel or through a software application with the appropriate printer driver. The shelf life of an unopened cartridge package is printed on the... settings always override control panel selections. Saving Toner with EconoMode (HP LaserJet 4 Plus and 5 Only) Toner cartridge life can be extended dramatically by using the EconoMode printing feature of the printer. Storing the Toner Cartridge Do not remove the toner cartridge from direct sunlight or other strong light...
Service Manual
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...4 Plus Only). 2. Registration Area Jams (Sensed by PS3.) 1. Check that the Transfer Roller is fully seated and shows no (Sensed by PS1.) 1. The sensor wires are damaged or mechanically broken. 2. Check that the Exit Sensor Arm (PS3) is free throughout its travel and that the Toner Cartridge ...is fed from the Lower Cassette). 6. The rear door is not fully seated into the printer. 2. Paper out sensors in Chapter 3. The LC Tray (Tray 3) is open. Set the ...
...4 Plus Only). 2. Registration Area Jams (Sensed by PS3.) 1. Check that the Transfer Roller is fully seated and shows no (Sensed by PS1.) 1. The sensor wires are damaged or mechanically broken. 2. Check that the Exit Sensor Arm (PS3) is free throughout its travel and that the Toner Cartridge ...is fed from the Lower Cassette). 6. The rear door is not fully seated into the printer. 2. Paper out sensors in Chapter 3. The LC Tray (Tray 3) is open. Set the ...
Service Manual
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...receiving drive voltage. • The Main Motor deviates from the correct speed for wear and binding. • Reseat J211 (or J214 on the HP LaserJet 4 Plus/4M Plus) on the DC Controller PCA, and the main connector on the DC Controller. Refer to speed within one second after reaching the correct speed. ...) The 57 SERVICE indicates that the +24B Voltage is present on the Main Motor Assembly. The Main Motor drives all moving components in the Toner Cartridge for one second of the gears. • Check the gears in the printing process. If the voltage is present, and the motor ...
...receiving drive voltage. • The Main Motor deviates from the correct speed for wear and binding. • Reseat J211 (or J214 on the HP LaserJet 4 Plus/4M Plus) on the DC Controller PCA, and the main connector on the DC Controller. Refer to speed within one second after reaching the correct speed. ...) The 57 SERVICE indicates that the +24B Voltage is present on the Main Motor Assembly. The Main Motor drives all moving components in the Toner Cartridge for one second of the gears. • Check the gears in the printing process. If the voltage is present, and the motor ...
Service Manual
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...Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes *If HP LaserJet 4 Plus/5 Optional Memory (C3130A, C3131A, C3132A, C3133 or C3146A) is installed in the LaserJet 4? Table B-2 Product Family Compatibility Matrix Accessory C2082A C2082B C3927A C2083A C2083D C3921A C2085A C2085D ... Memory (4 MByte) Memory (8 MByte) Memory (16 MByte) Duplex Assembly Duplex Assembly Toner Cartridge Work in the HP LaserJet 4, the printer will display a "53.1X.08 ERROR" (X indicates the position of the SIMMs slot). B-4 LaserJet 5/5M/5N Printer Yes Yes No Yes Yes No Yes No No Yes No No No No Yes...
...Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes *If HP LaserJet 4 Plus/5 Optional Memory (C3130A, C3131A, C3132A, C3133 or C3146A) is installed in the LaserJet 4? Table B-2 Product Family Compatibility Matrix Accessory C2082A C2082B C3927A C2083A C2083D C3921A C2085A C2085D ... Memory (4 MByte) Memory (8 MByte) Memory (16 MByte) Duplex Assembly Duplex Assembly Toner Cartridge Work in the HP LaserJet 4, the printer will display a "53.1X.08 ERROR" (X indicates the position of the SIMMs slot). B-4 LaserJet 5/5M/5N Printer Yes Yes No Yes Yes No Yes No No Yes No No No No Yes...