Service Manual
Page 7
... Printout 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 Procedures...
... Printout 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 Procedures...
Service Manual
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... 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 ...Printer Open Message 7-18 SW601 Functional Check 7-19 13 PAPER JAM Message 7-20 PS1 (Input/Registration Sensor) Check 7-22 PS3 (Exit Sensor) Check 7-23 Pickup Motor Functional Test (M2 7-23 Lower Cassette Functional Check 7-24 14 NO EP CART Message 7-25 16 Toner Low Message 7-25 41.X ERROR Message 7-27 50 SERVICE Error...
... 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 ...Printer Open Message 7-18 SW601 Functional Check 7-19 13 PAPER JAM Message 7-20 PS1 (Input/Registration Sensor) Check 7-22 PS3 (Exit Sensor) Check 7-23 Pickup Motor Functional Test (M2 7-23 Lower Cassette Functional Check 7-24 14 NO EP CART Message 7-25 16 Toner Low Message 7-25 41.X ERROR Message 7-27 50 SERVICE Error...
Service Manual
Page 149
...period is completed, the message 00 READY is turned ON, and ends when the fusing roller temperature reaches 172° C. At this point the printer is switched ON, the exhaust fan (FM1) begins low-speed rotation and the fusing roller maintains 172° C. The motors stop rotation when... high voltage is switched on -line," and the control panel keys become operational. The exhaust fan continues to room temperature without posting a 50 SERVICE error. When the printer is in the Standby period. After the power is applied to the transfer roller to clear the paper path. After the...
...period is completed, the message 00 READY is turned ON, and ends when the fusing roller temperature reaches 172° C. At this point the printer is switched ON, the exhaust fan (FM1) begins low-speed rotation and the fusing roller maintains 172° C. The motors stop rotation when... high voltage is switched on -line," and the control panel keys become operational. The exhaust fan continues to room temperature without posting a 50 SERVICE error. When the printer is in the Standby period. After the power is applied to the transfer roller to clear the paper path. After the...
Service Manual
Page 151
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). Functional Overview 5-39
Service Manual
Page 153
... a BD signal from the DC controller, 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). 51 ERROR This error occurs when the BD signal is sent from the drum to form a latent electrostatic image. The process repeats...
... a BD signal from the DC controller, 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). 51 ERROR This error occurs when the BD signal is sent from the drum to form a latent electrostatic image. The process repeats...
Service Manual
Page 235
...50 SERVICE error" section. For serial I/O configuration, the error may have occurred because you are not communicating because of improper 22 SERIAL I /O ERROR 22 HP MIO ERROR Parallel configuration: may mean a loose cable connection. If the error persists, refer to clear this error. For network MIO cards, see the user's manual for your printer... 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...
...50 SERVICE error" section. For serial I/O configuration, the error may have occurred because you are not communicating because of improper 22 SERIAL I /O ERROR 22 HP MIO ERROR Parallel configuration: may mean a loose cable connection. If the error persists, refer to clear this error. For network MIO cards, see the user's manual for your printer... 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...
Service Manual
Page 259
...fuser assembly if the thermoprotector opens. While the printer is in the AC Power Supply. The main components of the thermistor should be necessary to maintain a constant temperature on the fuser roller. Note If a 50 SERVICE error message is HOT. Fuser Malfunction Warning The Fuser ...Assembly is displayed, turn the printer OFF for at line voltage. At room temperature the resistance value of the Fuser Assembly...
...fuser assembly if the thermoprotector opens. While the printer is in the AC Power Supply. The main components of the thermistor should be necessary to maintain a constant temperature on the fuser roller. Note If a 50 SERVICE error message is HOT. Fuser Malfunction Warning The Fuser ...Assembly is displayed, turn the printer OFF for at line voltage. At room temperature the resistance value of the Fuser Assembly...
Service Manual
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... removal and replacement, as shown in series. Remove the Fuser Assembly from the printer. Is the Thermistor defective? 2. Replace the defective component (refer to clear (10 minutes) and turn the printer ON. Does the error persist? 2. It should read about 2 ohms (about 220 K ohms +/- ...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. Table 7-10 50 SERVICE Fuser Malfunction Checks Checks Is the Fuser ...
... removal and replacement, as shown in series. Remove the Fuser Assembly from the printer. Is the Thermistor defective? 2. Replace the defective component (refer to clear (10 minutes) and turn the printer ON. Does the error persist? 2. It should read about 2 ohms (about 220 K ohms +/- ...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. Table 7-10 50 SERVICE Fuser Malfunction Checks Checks Is the Fuser ...
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 58 SERVICE fan failure 7-34 A Accessory Parts 8-33 adjustment leading edge...
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 58 SERVICE fan failure 7-34 A Accessory Parts 8-33 adjustment leading edge...
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 ...