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
Page 10
...Guide Assembly 6-68 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 7-12 MP/PC/... 7-24 14 NO EP CART Message 7-25 16 Toner Low Message 7-25 41.X ERROR Message 7-27 50 SERVICE Error - Fuser Malfunction 7-29 51 ERROR Message 7-31 52 ERROR Scanner Malfunction 7-32 Laser/Scanner Assembly Functional Checks . . . . . 7-32...
...Guide Assembly 6-68 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 7-12 MP/PC/... 7-24 14 NO EP CART Message 7-25 16 Toner Low Message 7-25 41.X ERROR Message 7-27 50 SERVICE Error - Fuser Malfunction 7-29 51 ERROR Message 7-31 52 ERROR Scanner Malfunction 7-32 Laser/Scanner Assembly Functional Checks . . . . . 7-32...
Service Manual
Page 149
...is switched ON, the exhaust fan (FM1) begins low-speed rotation and the fusing roller maintains 172° C. This indicates that the printer is in the Standby period. Functional Overview 5-37 When the fusing roller reaches 172° C, the main motor, and AC high voltage...OFF. The motors stop rotation when the fuser reaches 172° C. At this point the printer is ready for approximately 4 seconds to room temperature without posting a 50 SERVICE error. PowerSave When the printer enters PowerSave mode, fuser current is switched on -line," and the control panel keys become ...
...is switched ON, the exhaust fan (FM1) begins low-speed rotation and the fusing roller maintains 172° C. This indicates that the printer is in the Standby period. Functional Overview 5-37 When the fusing roller reaches 172° C, the main motor, and AC high voltage...OFF. The motors stop rotation when the fuser reaches 172° C. At this point the printer is ready for approximately 4 seconds to room temperature without posting a 50 SERVICE error. PowerSave When the printer enters PowerSave mode, fuser current is switched on -line," and the control panel keys become ...
Service Manual
Page 151
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
Page 153
...VDO data is not received by the DC controller (see "51 ERROR" in Chapter 7). 52 ERROR This error occurs when the scanner motor fails (see "50 SERVICE") in Chapter 7). If a failure occurs during this period, the following errors may be displayed: 41 ERROR This error occurs when a sheet of paper arrives, the voltage on a page... Before the next sheet 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 correct temperature in the required time (see "52...
...VDO data is not received by the DC controller (see "51 ERROR" in Chapter 7). 52 ERROR This error occurs when the scanner motor fails (see "50 SERVICE") in Chapter 7). If a failure occurs during this period, the following errors may be displayed: 41 ERROR This error occurs when a sheet of paper arrives, the voltage on a page... Before the next sheet 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 correct temperature in the required time (see "52...
Service Manual
Page 235
... Malfunction" section. Indicates scanner motor is an I/O buffer overrun error. 22 PARALLEL I /O ERROR signal protocols. 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 than one sheet of improper...
... Malfunction" section. Indicates scanner motor is an I/O buffer overrun error. 22 PARALLEL I /O ERROR signal protocols. 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 than one sheet of improper...
Service Manual
Page 259
... temperature above 230° C. 3 A condition wherein a temperature of approximately 172° C is displayed, turn the printer OFF for at line voltage. While the printer is a switch designed for the fusing process. The thermistor is HOT. A high intensity fusing lamp, located inside the fuser... changes with temperature. 50 SERVICE Error - It may have already been resolved. Note If a 50 SERVICE error message is maintained on the fuser roller. Troubleshooting 7-29 Allow the assembly time to cool before turning the printer ON results in a fusing error: 1 Unable to ...
... temperature above 230° C. 3 A condition wherein a temperature of approximately 172° C is displayed, turn the printer OFF for at line voltage. While the printer is a switch designed for the fusing process. The thermistor is HOT. A high intensity fusing lamp, located inside the fuser... changes with temperature. 50 SERVICE Error - It may have already been resolved. Note If a 50 SERVICE error message is maintained on the fuser roller. Troubleshooting 7-29 Allow the assembly time to cool before turning the printer ON results in a fusing error: 1 Unable to ...
Service Manual
Page 260
...Chapter 6. 7-30 Troubleshooting To check if one or the other is detected, either open ? Remove the Fuser Assembly from the printer. Does the error persist? 2. If the thermistor is either the fusing bulb or the thermoswitch is correct. 2. Action Reseat the Fuser Assembly. .... Replace the defective component (refer to Chapter 6) or replace the complete Fuser Assembly. 1. 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.
...Chapter 6. 7-30 Troubleshooting To check if one or the other is detected, either open ? Remove the Fuser Assembly from the printer. Does the error persist? 2. If the thermistor is either the fusing bulb or the thermoswitch is correct. 2. Action Reseat the Fuser Assembly. .... Replace the defective component (refer to Chapter 6) or replace the complete Fuser Assembly. 1. 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.
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 ...