Service Manual
Page 7
... 3-57 Personality SIMM (PostScript 3-58 Troubleshooting a SIMM 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...
... 3-57 Personality SIMM (PostScript 3-58 Troubleshooting a SIMM 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...
Service Manual
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Fuser Malfunction 7-29 51 ERROR Message 7-31 52 ERROR Scanner Malfunction 7-32 Laser/Scanner Assembly...Interconnect PCA Removal 6-69 7 Troubleshooting LaserJet 5 Error Map 7-A Pre-Troubleshooting Procedures 7-1 Preliminary Operating Checks 7-1 Printer Message Troubleshooting 7-2 Printer Message Summary Table 7-2 Clearable Warnings 7-10 Printer Message Troubleshooting Procedures 7-12 Blank Display ... Sensor (PS2) Functional Check 7-17 PS4 Check (MP Tray Empty Sensor 7-17 12 Printer Open Message 7-18 SW601 Functional Check 7-19 13 PAPER JAM Message 7-20 PS1 (Input...
Fuser Malfunction 7-29 51 ERROR Message 7-31 52 ERROR Scanner Malfunction 7-32 Laser/Scanner Assembly...Interconnect PCA Removal 6-69 7 Troubleshooting LaserJet 5 Error Map 7-A Pre-Troubleshooting Procedures 7-1 Preliminary Operating Checks 7-1 Printer Message Troubleshooting 7-2 Printer Message Summary Table 7-2 Clearable Warnings 7-10 Printer Message Troubleshooting Procedures 7-12 Blank Display ... Sensor (PS2) Functional Check 7-17 PS4 Check (MP Tray Empty Sensor 7-17 12 Printer Open Message 7-18 SW601 Functional Check 7-19 13 PAPER JAM Message 7-20 PS1 (Input...
Service Manual
Page 149
...reaches 172° C, the main motor, and AC high voltage, are turned OFF. The exhaust fan continues to room temperature without posting a 50 SERVICE error. When the printer is turned ON, and ends when the fusing roller temperature reaches 172° C. Warmup Period The Warmup period begins when the... printer's power is switched ON, the exhaust fan (FM1) begins low-speed rotation and the fusing roller maintains 172° C. After the power ...
...reaches 172° C, the main motor, and AC high voltage, are turned OFF. The exhaust fan continues to room temperature without posting a 50 SERVICE error. When the printer is turned ON, and ends when the fusing roller temperature reaches 172° C. Warmup Period The Warmup period begins when the... printer's power is switched ON, the exhaust fan (FM1) begins low-speed rotation and the fusing roller maintains 172° C. After the power ...
Service Manual
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Functional Overview 5-39 If a failure occurs during this period, the following errors may be displayed: 50 SERVICE This error occurs when the fusing roller fails to reach the correct temperature in the required time (see "50 SERVICE") in Chapter 7). 51 ERROR This error occurs when the BD signal is not received by the DC controller, (see "51 ERROR BEAM DETECT)" in Chapter 7). 52 ERROR This error occurs when the scanner motor fails (see "52 ERROR," Chapter 7).
Functional Overview 5-39 If a failure occurs during this period, the following errors may be displayed: 50 SERVICE This error occurs when the fusing roller fails to reach the correct temperature in the required time (see "50 SERVICE") in Chapter 7). 51 ERROR This error occurs when the BD signal is not received by the DC controller, (see "51 ERROR BEAM DETECT)" in Chapter 7). 52 ERROR This error occurs when the scanner motor fails (see "52 ERROR," Chapter 7).
Service Manual
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... for each scan line of paper is fed too soon or when an unstable BD or TOP signal is received (see "41.x ERROR" message in Chapter 7). 50 SERVICE This error occurs when the fusing roller fails to rise to the paper. The DC controller translates the VDO signal into a VIDEO OUT signal... when the scanner motor fails (see "52 ERROR" in Chapter 7). 51 ERROR This error occurs when the BD signal is sent from the drum to the correct temperature in the required time (see "50 SERVICE") in Chapter 7). Before the next sheet of laser light that are reflected off the scanner mirror and onto...
... for each scan line of paper is fed too soon or when an unstable BD or TOP signal is received (see "41.x ERROR" message in Chapter 7). 50 SERVICE This error occurs when the fusing roller fails to rise to the paper. The DC controller translates the VDO signal into a VIDEO OUT signal... when the scanner motor fails (see "52 ERROR" in Chapter 7). 51 ERROR This error occurs when the BD signal is sent from the drum to the correct temperature in the required time (see "50 SERVICE") in Chapter 7). Before the next sheet of laser light that are reflected off the scanner mirror and onto...
Service Manual
Page 235
... "41.X ERROR Message." 41.3 ERROR 41.3 UNEXPECTED PAPER SIZE 50 SERVICE 50 FUSER ERROR 51 ERROR 51 PRINTER ERROR 52 ERROR 52 PRINTER ERROR *Press Go on line, or your printer's baud rate or parity was not the same as the computer. If the error persists, refer to clear the error. The paper...same baud rate as the computer's. Table 7-1 Printer Messages (continued) Message Symptoms and Recommendations 22 ERROR For serial/Bi-Tronics parallel configuration, the computer and printer are using an RS232 serial connection, the HP LaserJet printer uses XON/XOFF and DTR signal protocols rather ...
... "41.X ERROR Message." 41.3 ERROR 41.3 UNEXPECTED PAPER SIZE 50 SERVICE 50 FUSER ERROR 51 ERROR 51 PRINTER ERROR 52 ERROR 52 PRINTER ERROR *Press Go on line, or your printer's baud rate or parity was not the same as the computer. If the error persists, refer to clear the error. The paper...same baud rate as the computer's. Table 7-1 Printer Messages (continued) Message Symptoms and Recommendations 22 ERROR For serial/Bi-Tronics parallel configuration, the computer and printer are using an RS232 serial connection, the HP LaserJet printer uses XON/XOFF and DTR signal protocols rather ...
Service Manual
Page 259
... assembly if the thermoprotector opens. Note If a 50 SERVICE error message is HOT. The following conditions result in the AC Power Supply. Fuser Malfunction Warning The Fuser Assembly is displayed, turn the printer OFF for at line voltage. While the printer is in standby mode, a temperature of the ...of around 183° C is a switch designed for the fusing process. Failure to cool before turning the printer ON results in printing mode, a temperature of the error may be between 180k ohms and 280k ohms.The thermoprotector is maintained. Allow the assembly time to wait the full...
... assembly if the thermoprotector opens. Note If a 50 SERVICE error message is HOT. The following conditions result in the AC Power Supply. Fuser Malfunction Warning The Fuser Assembly is displayed, turn the printer OFF for at line voltage. While the printer is in standby mode, a temperature of the ...of around 183° C is a switch designed for the fusing process. Failure to cool before turning the printer ON results in printing mode, a temperature of the error may be between 180k ohms and 280k ohms.The thermoprotector is maintained. Allow the assembly time to wait the full...
Service Manual
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... 7-11 for Fuser Assembly location and Chapter 6 for the error message to clear (10 minutes) and turn the printer ON. Note The 50 SERVICE error message can be cleared immediately by shorting the C202 leads on the HP LaserJet 4/4M (or the C205 leads on the HP LaserJet 4 Plus/4M Plus/5/5M/5N) on the DC Controller. Replace the defective...
... 7-11 for Fuser Assembly location and Chapter 6 for the error message to clear (10 minutes) and turn the printer ON. Note The 50 SERVICE error message can be cleared immediately by shorting the C202 leads on the HP LaserJet 4/4M (or the C205 leads on the HP LaserJet 4 Plus/4M Plus/5/5M/5N) on the DC Controller. Replace the defective...
Service Manual
Page 437
Index ! 12 PRINTER OPEN 7-18 13 PAPER JAM 7-20 14 NO EP CART 7-25 16 TONER LOW 4-10, 7-25 21 PRINT OVERRUN 3-53 41.1 ERROR 7-28 41.2 ERROR 7-28, 7-31 41.3 ERROR 7-28 41.4 ERROR 7-28 41.5 ERROR 7-28 50 service error 7-29 51 ERROR Message 7-31 52 ERROR 7-32 57 SERVICE 7-33...cleaning brush uses 4-16 cleaning station, drum 5-18 clearable warnings 7-10 CLEARING MEMORY 7-A CLOSE PRINTER COVER 7-A cold reset 3-23, B-27 communications checks 7-52, 7-54 component locations 7-59 CompuServe Forum, HP 1-13 conditioning station, drum 5-19 configuration AUTOEXEC.BAT 7-53 communications check 7-52 system 3-31...
Index ! 12 PRINTER OPEN 7-18 13 PAPER JAM 7-20 14 NO EP CART 7-25 16 TONER LOW 4-10, 7-25 21 PRINT OVERRUN 3-53 41.1 ERROR 7-28 41.2 ERROR 7-28, 7-31 41.3 ERROR 7-28 41.4 ERROR 7-28 41.5 ERROR 7-28 50 service error 7-29 51 ERROR Message 7-31 52 ERROR 7-32 57 SERVICE 7-33...cleaning brush uses 4-16 cleaning station, drum 5-18 clearable warnings 7-10 CLEARING MEMORY 7-A CLOSE PRINTER COVER 7-A cold reset 3-23, B-27 communications checks 7-52, 7-54 component locations 7-59 CompuServe Forum, HP 1-13 conditioning station, drum 5-19 configuration AUTOEXEC.BAT 7-53 communications check 7-52 system 3-31...
Service Manual
Page 438
... 3-42 Drum cleaning station 5-18 conditioning station 5-19 developing station 5-22 photosensitive 5-17 Rotation Check 7-50 sensitivity 5-17 transferring station 5-24 writing station 5-20 dtr polarity 3-34 dtr/dsr 3-34 Duplex components...Error messages MP/PC/LC LOAD 7-13 troubleshooting 7-2 ESD 6-1 European Customer Support Center (ECSC) 1-14 European formatter installation 3-22 exhaust fan motor 5-10 Explorer 3-33 F FACTORY DEFAULTS 7-A faint print 7-35 faint print 7-38 Index-2 fan checks 7-34 failure 7-34 motor signals 5-10 removal 6-39 faulty registration 7-39 fax information service (HP...
... 3-42 Drum cleaning station 5-18 conditioning station 5-19 developing station 5-22 photosensitive 5-17 Rotation Check 7-50 sensitivity 5-17 transferring station 5-24 writing station 5-20 dtr polarity 3-34 dtr/dsr 3-34 Duplex components...Error messages MP/PC/LC LOAD 7-13 troubleshooting 7-2 ESD 6-1 European Customer Support Center (ECSC) 1-14 European formatter installation 3-22 exhaust fan motor 5-10 Explorer 3-33 F FACTORY DEFAULTS 7-A faint print 7-35 faint print 7-38 Index-2 fan checks 7-34 failure 7-34 motor signals 5-10 removal 6-39 faulty registration 7-39 fax information service (HP...
Service Manual
Page 443
service checkpoints 4-1, 4-3 Service Mode 3-20, B-25 service/error messages 3-59 setting the cold reset B-27 setting the page count 3-21, B-26 setting up the envelope feeder 3-50 settings, tray switch 5-9 sheet feeder installation 3-44 signals fan motor 5-10 main motor 5-... data out) 5-4 smeared print/improper fusing 7-35, 7-42 software B-35 shipped with printer B-34 solenoids 5-5 signals 5-5 space requirements 2-2 specifications IrDA B-34 labels 2-3, 2-5 paper 2-3 print media 2-3 standard printer operation 5-33 standby period 5-37 state machines 5-4 statement, RFI 1-9 station drum cleaning ...
service checkpoints 4-1, 4-3 Service Mode 3-20, B-25 service/error messages 3-59 setting the cold reset B-27 setting the page count 3-21, B-26 setting up the envelope feeder 3-50 settings, tray switch 5-9 sheet feeder installation 3-44 signals fan motor 5-10 main motor 5-... data out) 5-4 smeared print/improper fusing 7-35, 7-42 software B-35 shipped with printer B-34 solenoids 5-5 signals 5-5 space requirements 2-2 specifications IrDA B-34 labels 2-3, 2-5 paper 2-3 print media 2-3 standard printer operation 5-33 standby period 5-37 state machines 5-4 statement, RFI 1-9 station drum cleaning ...