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...
... 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...
Service Manual
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...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...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...
...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...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...
Service Manual
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... Feeder • Accessory Cartridge • Duplex Assembly (LaserJet 4 Plus/5) • Optional Memory, Personality SIMMs, or Flash • Include print samples that were installed in the printer. Configuration 3-43 If the original packaging material is no longer available, replacement packing and shipping material is available from HP's Support Material Organization (SMO) for part number C2001...
... Feeder • Accessory Cartridge • Duplex Assembly (LaserJet 4 Plus/5) • Optional Memory, Personality SIMMs, or Flash • Include print samples that were installed in the printer. Configuration 3-43 If the original packaging material is no longer available, replacement packing and shipping material is available from HP's Support Material Organization (SMO) for part number C2001...
Service Manual
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... When print becomes faint, shake cartridge to distribute remaining toner. 2. Fuser Assembly (115 V, 50/60 Hz) Fuser Assembly (220 V, 50 Hz) 1 200,000 1 200,000 May affect print quality and/or paper jams. Look for wear when servicing the printer. Notes: The estimated Toner Cartridge life is based on usage. Life Expectancy of Consumables...
... When print becomes faint, shake cartridge to distribute remaining toner. 2. Fuser Assembly (115 V, 50/60 Hz) Fuser Assembly (220 V, 50 Hz) 1 200,000 1 200,000 May affect print quality and/or paper jams. Look for wear when servicing the printer. Notes: The estimated Toner Cartridge life is based on usage. Life Expectancy of Consumables...
Service Manual
Page 137
... roller is fused into the paper. If the fusing system overheats (exceeds 230° C), a thermoswitch opens the power circuit to the fusing heat lamp, and a 50 SERVICE message is monitored by heat and pressure to the Paper Functional Overview 5-25 Figure 5-15 Fusing the Toner to produce a permanent image. The paper passes...
... roller is fused into the paper. If the fusing system overheats (exceeds 230° C), a thermoswitch opens the power circuit to the fusing heat lamp, and a 50 SERVICE message is monitored by heat and pressure to the Paper Functional Overview 5-25 Figure 5-15 Fusing the Toner to produce a permanent image. The paper passes...
Service Manual
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... the fusing roller temperature reaches 172° C. Warmup Period The Warmup period begins when the printer's power is shut down, allowing the fuser to cool to room temperature without posting a 50 SERVICE error. The fusing roller remains at a constant temperature of 172° C, and the exhaust... fan continues operating at low speed. The motors stop rotation when the fuser reaches 172° C. At this point the printer is switched on -line," ...
... the fusing roller temperature reaches 172° C. Warmup Period The Warmup period begins when the printer's power is shut down, allowing the fuser to cool to room temperature without posting a 50 SERVICE error. The fusing roller remains at a constant temperature of 172° C, and the exhaust... fan continues operating at low speed. The motors stop rotation when the fuser reaches 172° C. At this point the printer is switched on -line," ...
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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..., creating intermittent bursts 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 ERROR" in Chapter 7). 51 ERROR..., 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).
..., creating intermittent bursts 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 ERROR" in Chapter 7). 51 ERROR..., 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).
Service Manual
Page 235
... RS232 serial connection, the HP LaserJet printer uses XON/XOFF and DTR signal protocols rather than one sheet of improper 22 SERIAL I/O ERROR signal protocols. For network MIO cards, this means there was on the LJ5. If the error persists, refer to the "50 SERVICE error" section. Troubleshooting 7-5 Make sure the printer is unable to clear...
... RS232 serial connection, the HP LaserJet printer uses XON/XOFF and DTR signal protocols rather than one sheet of improper 22 SERIAL I/O ERROR signal protocols. For network MIO cards, this means there was on the LJ5. If the error persists, refer to the "50 SERVICE error" section. Troubleshooting 7-5 Make sure the printer is unable to clear...
Service Manual
Page 259
... when the temperature reaches 230° C. The thermoprotector will not reset when the fuser cools. Note If a 50 SERVICE error message is displayed, turn the printer OFF for at line voltage. The thermistor is HOT. The following conditions result in the AC Power Supply. Failure... on the fuser roller. It may have already been resolved. While the printer is in standby mode, a temperature of around 183° C is a switch designed for the fusing process. Troubleshooting 7-29 50 SERVICE Error - Allow the assembly time to maintain a constant temperature on the fuser...
... when the temperature reaches 230° C. The thermoprotector will not reset when the fuser cools. Note If a 50 SERVICE error message is displayed, turn the printer OFF for at line voltage. The thermistor is HOT. The following conditions result in the AC Power Supply. Failure... on the fuser roller. It may have already been resolved. While the printer is in standby mode, a temperature of around 183° C is a switch designed for the fusing process. Troubleshooting 7-29 50 SERVICE Error - Allow the assembly time to maintain a constant temperature on the fuser...
Service Manual
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...about 220 K ohms +/- 40 K ohms at ambient room temperature. 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. Allow adequate time for the 220 volt...from the printer. Replace the defective component (refer to room temperature. If the thermistor is either open condition is detected, either the fusing bulb or the thermoswitch is correct. 2. Remove the Formatter PCA to Chapter 6) or the complete Fuser Assembly. 1. Table 7-10 50 SERVICE Fuser ...
...about 220 K ohms +/- 40 K ohms at ambient room temperature. 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. Allow adequate time for the 220 volt...from the printer. Replace the defective component (refer to room temperature. If the thermistor is either open condition is detected, either the fusing bulb or the thermoswitch is correct. 2. Remove the Formatter PCA to Chapter 6) or the complete Fuser Assembly. 1. Table 7-10 50 SERVICE Fuser ...
Service Manual
Page 437
...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... 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...
...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... 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
... B-8 DOS commands serial 7-53 DOS Utilities 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 A-14 covers A-9 electrical block diagram A-5...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 FIRST) 1-12 feed guide assembly 6-62 replacing 6-68 Finland laser safety 1-10, B-9 firmware date code 3-26 flash SIMM B-29 ...
... B-8 DOS commands serial 7-53 DOS Utilities 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 A-14 covers A-9 electrical block diagram A-5...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 FIRST) 1-12 feed guide assembly 6-62 replacing 6-68 Finland laser safety 1-10, B-9 firmware date code 3-26 flash SIMM B-29 ...
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 ...