Service Manual
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...replacement strategy 133 Required tools 133 Before performing service 133 After completing service 133 Screws used in the printer 134 Parts-removal tree 135 Printer input tray, and cabinet wheel locks 136 User-replaceable parts 137 Print cartridge 137 Transfer roller 138...165 Tray 2 media-size sensor 167 Main cooling fan (left side 168 Cooling fan (right side; HP LaserJet 4300 series printer only 170 Laser/scanner assembly 173 Print-cartridge motor (HP LaserJet 4300 series printer only 175 Main motor 177 Tray 2 lifter-drive assembly 179 DC controller PCA 181 Q2431-90912 Table...
...replacement strategy 133 Required tools 133 Before performing service 133 After completing service 133 Screws used in the printer 134 Parts-removal tree 135 Printer input tray, and cabinet wheel locks 136 User-replaceable parts 137 Print cartridge 137 Transfer roller 138...165 Tray 2 media-size sensor 167 Main cooling fan (left side 168 Cooling fan (right side; HP LaserJet 4300 series printer only 170 Laser/scanner assembly 173 Print-cartridge motor (HP LaserJet 4300 series printer only 175 Main motor 177 Tray 2 lifter-drive assembly 179 DC controller PCA 181 Q2431-90912 Table...
Service Manual
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...(2 of 4 157 Figure 95. Formatter assembly 161 Figure 100. Fuser (1 of figures Q2431-90912 Duplexing pendulum assembly (1 o 2 165 Figure 105. Laser/scanner (1 of 4 173 x List of 2 162 Figure 101. Print cartridge memory chip 126 Figure 58. Transfer roller 138 Figure 62. Tray 2... assembly (2 of 2 163 Figure 103. Main cooling fan (2 of printer, input trays, and cabinet wheel locks 136 Figure 59. Location of 4 168 Figure 110. Tray 1 (1 of 5 170 Figure 113. Cooling fan (HP LaserJet 4300 series only; 1 of 6 152 Figure 86. Cleaning the transfer charging roller...
...(2 of 4 157 Figure 95. Formatter assembly 161 Figure 100. Fuser (1 of figures Q2431-90912 Duplexing pendulum assembly (1 o 2 165 Figure 105. Laser/scanner (1 of 4 173 x List of 2 162 Figure 101. Print cartridge memory chip 126 Figure 58. Transfer roller 138 Figure 62. Tray 2... assembly (2 of 2 163 Figure 103. Main cooling fan (2 of printer, input trays, and cabinet wheel locks 136 Figure 59. Location of 4 168 Figure 110. Tray 1 (1 of 5 170 Figure 113. Cooling fan (HP LaserJet 4300 series only; 1 of 6 152 Figure 86. Cleaning the transfer charging roller...
Service Manual
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Product configurations HP LaserJet 4200 series HP LaserJet 4300 series q Q2425A q 48 MB RAM, expandable to 416 ...64 MB RAM, expandable to 416 MB q one 100-sheet tray and two 500-sheet trays q HP Jetdirect 10/100Base-TX print server card for network connection q duplexer for automatic two-sided printing q ...HP Jetdirect 10/100Base-TX print server card for network connection q duplexer for automatic two-sided printing q 500-sheet stapler/stacker output accessory Q2431-90912 Chapter 1 Printer description 3 Table 1. Printer configurations Base model The HP LaserJet 4200/4300 series printer...
Product configurations HP LaserJet 4200 series HP LaserJet 4300 series q Q2425A q 48 MB RAM, expandable to 416 ...64 MB RAM, expandable to 416 MB q one 100-sheet tray and two 500-sheet trays q HP Jetdirect 10/100Base-TX print server card for network connection q duplexer for automatic two-sided printing q ...HP Jetdirect 10/100Base-TX print server card for network connection q duplexer for automatic two-sided printing q 500-sheet stapler/stacker output accessory Q2431-90912 Chapter 1 Printer description 3 Table 1. Printer configurations Base model The HP LaserJet 4200/4300 series printer...
Service Manual
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... ppm, letter-size paper Up to 43 ppm, A4-size paper Up to 416 MB total, combining standard and accessory memory DIMMs 8 Printer description Q2431-90912 Circuit requirements HP LaserJet 4200 series HP LaserJet 4300 series 110-volt models 220-volt models Power requirements 110 to 127 volt s(+/-10 percent) 220 to change. General specifications Description Operating temperature...
... ppm, letter-size paper Up to 43 ppm, A4-size paper Up to 416 MB total, combining standard and accessory memory DIMMs 8 Printer description Q2431-90912 Circuit requirements HP LaserJet 4200 series HP LaserJet 4300 series 110-volt models 220-volt models Power requirements 110 to 127 volt s(+/-10 percent) 220 to change. General specifications Description Operating temperature...
Service Manual
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...Product Name: HP LaserJet 4200 series HP LaserJet 4300 series Regulatory Model Numbers: BOISB-0203-00 BOISB-0204-00 Product Options: ALL conforms to the following Product Specifications: 1) Safety: EMC: IEC 60950:1999 / EN 60950:2000 IEC 60825-1:1993+A1 / EN 60825-1+A11 Class 1 Laser/LED Product ... EMC Class B requirements. Conforme à la classe B des normes canadiennes de compatibilité électromagnétique (CEM). 26 Printer description Q2431-90912 Operation is subject to the following applies: Warning - When the interface cable is a class A product. Boise, Idaho,...
...Product Name: HP LaserJet 4200 series HP LaserJet 4300 series Regulatory Model Numbers: BOISB-0203-00 BOISB-0204-00 Product Options: ALL conforms to the following Product Specifications: 1) Safety: EMC: IEC 60950:1999 / EN 60950:2000 IEC 60825-1:1993+A1 / EN 60825-1+A11 Class 1 Laser/LED Product ... EMC Class B requirements. Conforme à la classe B des normes canadiennes de compatibilité électromagnétique (CEM). 26 Printer description Q2431-90912 Operation is subject to the following applies: Warning - When the interface cable is a class A product. Boise, Idaho,...
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...PRINT PS ERRORS *OFF ON Use this item to print a postscript (PS; ORIENTATION *PORTRAIT LANDSCAPE Use this item to tell the printer whether or not to select default page orientation. Note It is the one line. This option is available only if it is installed.... 3: Fonts stored in one line. NO: Up to use: REGULAR: The internal Courier font available on the HP LaserJet 4200/4300 series printers. DARK: The internal Courier font available on the HP LaserJet 4 series printers. YES: Up to 80 10-pitch characters can be printed on one of Courier font to 78 10-pitch ...
...PRINT PS ERRORS *OFF ON Use this item to print a postscript (PS; ORIENTATION *PORTRAIT LANDSCAPE Use this item to tell the printer whether or not to select default page orientation. Note It is the one line. This option is available only if it is installed.... 3: Fonts stored in one line. NO: Up to use: REGULAR: The internal Courier font available on the HP LaserJet 4200/4300 series printers. DARK: The internal Courier font available on the HP LaserJet 4 series printers. YES: Up to 80 10-pitch characters can be printed on one of Courier font to 78 10-pitch ...
Service Manual
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...in the print cartridge when printing at 5 percent coverage. (For the 12,000-page cartridge in the LaserJet 4300 series, 15 percent means that prevents printing, the message remains on the printer control-panel display. If you do not replace the cartridge, you replace the print cartridge. CARTRIDGE OUT...Printing performance might be improved with this item to tell the printer how to react to ON. CARTRIDGE LOW STOP *CONTINUE Use this message. STOP: The printer stops printing until you press the SELECT ( ) button. HP does not guarantee good print quality if you print after receiving ...
...in the print cartridge when printing at 5 percent coverage. (For the 12,000-page cartridge in the LaserJet 4300 series, 15 percent means that prevents printing, the message remains on the printer control-panel display. If you do not replace the cartridge, you replace the print cartridge. CARTRIDGE OUT...Printing performance might be improved with this item to tell the printer how to react to ON. CARTRIDGE LOW STOP *CONTINUE Use this message. STOP: The printer stops printing until you press the SELECT ( ) button. HP does not guarantee good print quality if you print after receiving ...
Service Manual
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... page 242). Press the UP ARROW ( ) button to scroll to clear the PERFORM PRINTER MAINTENANCE message temporarily. Maintenance kit part numbers Part name Part number q 110-V printer kit (HP LaserJet 4200 series) Q2429A q 110-V printer kit (HP LaserJet 4300 series) Q2436A q 220-V printer kit (HP LaserJet 4200 series) Q2430A q 220-V printer kit (HP LaserJet 4300 series) Q2437A The maintenance kit contains userreplaceable parts and instructions for approximately 10,000...
... page 242). Press the UP ARROW ( ) button to scroll to clear the PERFORM PRINTER MAINTENANCE message temporarily. Maintenance kit part numbers Part name Part number q 110-V printer kit (HP LaserJet 4200 series) Q2429A q 110-V printer kit (HP LaserJet 4300 series) Q2436A q 220-V printer kit (HP LaserJet 4200 series) Q2430A q 220-V printer kit (HP LaserJet 4300 series) Q2437A The maintenance kit contains userreplaceable parts and instructions for approximately 10,000...
Service Manual
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...operation Q2431-90912 When the DC controller PCA sends a print command to rotate. The paper-feeder driver controls the operation sequences of the printer begins to the paper feeder, the main motor of the 500-sheet feeder. The paperfeeder driver also returns the status of +24 ... prescribed speed, the paper-feeder driver receives the pickup command from the 500-sheet feeder The HP LaserJet 4200/4300 series printers support up to the pickup command. The main motor (M101) of the printer drives the paper feeder. The paper-feeder driver drives the solenoid in the paper-feeder driver...
...operation Q2431-90912 When the DC controller PCA sends a print command to rotate. The paper-feeder driver controls the operation sequences of the printer begins to the paper feeder, the main motor of the 500-sheet feeder. The paperfeeder driver also returns the status of +24 ... prescribed speed, the paper-feeder driver receives the pickup command from the 500-sheet feeder The HP LaserJet 4200/4300 series printers support up to the pickup command. The main motor (M101) of the printer drives the paper feeder. The paper-feeder driver drives the solenoid in the paper-feeder driver...
Service Manual
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...two-way communication between multiple computers or networks connected to change printer settings and monitor printer status from the control panel (print-quality menu) and through its bidirectional interface (IEEE-1284). The HP LaserJet 4300 series printer formatter incorporates a 350 MHz RISC processor. 128 Theory of ... the slots provided on the rear of as "draft mode," can be installed in the control panel. CPU The HP LaserJet 4200 series printer formatter incorporates a 300 MHz RISC processor. The default setting is used for storing forms, fonts, and signatures. EconoMode...
...two-way communication between multiple computers or networks connected to change printer settings and monitor printer status from the control panel (print-quality menu) and through its bidirectional interface (IEEE-1284). The HP LaserJet 4300 series printer formatter incorporates a 350 MHz RISC processor. 128 Theory of ... the slots provided on the rear of as "draft mode," can be installed in the control panel. CPU The HP LaserJet 4200 series printer formatter incorporates a 300 MHz RISC processor. The default setting is used for storing forms, fonts, and signatures. EconoMode...
Service Manual
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HP LaserJet 4300 series printer only) . . . . . 170 Laser/scanner assembly 173 Print-cartridge motor (HP LaserJet 4300 series printer only 175 Main motor 177 Tray 2 lifter-drive assembly 179 DC controller PCA 181 Paper-pickup assembly 183 Main drive assembly 186... Contents Removal and replacement strategy 133 Required tools 133 Before performing service 133 After completing service 133 Screws used in the printer 134 Parts-removal tree 135 Printer input tray, and cabinet wheel locks 136 User-replaceable parts 137 Print cartridge 137 Transfer roller 138 Tray 1 pickup roller...
HP LaserJet 4300 series printer only) . . . . . 170 Laser/scanner assembly 173 Print-cartridge motor (HP LaserJet 4300 series printer only 175 Main motor 177 Tray 2 lifter-drive assembly 179 DC controller PCA 181 Paper-pickup assembly 183 Main drive assembly 186... Contents Removal and replacement strategy 133 Required tools 133 Before performing service 133 After completing service 133 Screws used in the printer 134 Parts-removal tree 135 Printer input tray, and cabinet wheel locks 136 User-replaceable parts 137 Print cartridge 137 Transfer roller 138 Tray 1 pickup roller...
Service Manual
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...side; HP LaserJet 4300 series printer only) This fan is not installed in the HP LaserJet 4200 series printer. 1. Gently pry back the two retaining tabs (callout 1) and slip the anti-static bar (callout 2) bar off of 5) 170 Removing and replacing parts Q2431-90912 Cooling fan (HP LaserJet 4300 series only; ...2 of them. 82 81 Figure 112. Remove the following assemblies: q Top cover. Figure 113. Rotate the anti-static bar away from the printer to release it. See "Right-side cover" ...
...side; HP LaserJet 4300 series printer only) This fan is not installed in the HP LaserJet 4200 series printer. 1. Gently pry back the two retaining tabs (callout 1) and slip the anti-static bar (callout 2) bar off of 5) 170 Removing and replacing parts Q2431-90912 Cooling fan (HP LaserJet 4300 series only; ...2 of them. 82 81 Figure 112. Remove the following assemblies: q Top cover. Figure 113. Rotate the anti-static bar away from the printer to release it. See "Right-side cover" ...
Service Manual
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...each harness connector on the fan duct. Q2431-90912 Chapter 6 Removing and replacing parts 171 Unplug the fan connector from inside the printer. Cooling fan (HP LaserJet 4300 series only; 3 of the duct bracket. 5 Figure 115. Use a screwdriver to unweave them easily from the harness guide (callout 4).... tabs (callout 5) and push the fan out of 5) 5. Reinstall note Cooling fan (HP LaserJet 4300 series only; 4 of 5) When you install the fan, the air must flow into the printer. Hint It might be necessary to unplug various connectors or release some wire-harness retainer clips...
...each harness connector on the fan duct. Q2431-90912 Chapter 6 Removing and replacing parts 171 Unplug the fan connector from inside the printer. Cooling fan (HP LaserJet 4300 series only; 3 of the duct bracket. 5 Figure 115. Use a screwdriver to unweave them easily from the harness guide (callout 4).... tabs (callout 5) and push the fan out of 5) 5. Reinstall note Cooling fan (HP LaserJet 4300 series only; 4 of 5) When you install the fan, the air must flow into the printer. Hint It might be necessary to unplug various connectors or release some wire-harness retainer clips...
Service Manual
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Hint It might be removed), unweave the remaining wire-harness (callout 6) from the harness guide. 8 6 7 Figure 116. Cooling fan (HP LaserJet 4300 series only; 5 of 5) 172 Removing and replacing parts Q2431-90912 If it is necessary to remove the fan duct (for example, if the main drive assembly is going to be necessary to unplug various connectors or release some wire-harness retainer clips to provide enough slack in the wire-harnesses to unweave them easily from the harness guide (callout 7). 6. Remove two screws (callout 8) and remove the fan-duct bracket.
Hint It might be removed), unweave the remaining wire-harness (callout 6) from the harness guide. 8 6 7 Figure 116. Cooling fan (HP LaserJet 4300 series only; 5 of 5) 172 Removing and replacing parts Q2431-90912 If it is necessary to remove the fan duct (for example, if the main drive assembly is going to be necessary to unplug various connectors or release some wire-harness retainer clips to provide enough slack in the wire-harnesses to unweave them easily from the harness guide (callout 7). 6. Remove two screws (callout 8) and remove the fan-duct bracket.
Service Manual
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... on page 146. Unweave the harness from the wire guide to gain access to the print-cartridge motor wire-harness. 1 2 Figure 121. Print-cartridge motor (HP LaserJet 4300 series only; 1 of 2) Q2431-90912 Chapter 6 Removing and replacing parts 175 callout 1). It might be necessary to remove additional wire-harnesses from the wire guide (...connector from the DC controller PCA (location J86; Remove the following assemblies: q Top cover. See "Top cover" on page 149. 2. Note Hint Print-cartridge motor (HP LaserJet 4300 series printer only) This motor is not installed on the...
... on page 146. Unweave the harness from the wire guide to gain access to the print-cartridge motor wire-harness. 1 2 Figure 121. Print-cartridge motor (HP LaserJet 4300 series only; 1 of 2) Q2431-90912 Chapter 6 Removing and replacing parts 175 callout 1). It might be necessary to remove additional wire-harnesses from the wire guide (...connector from the DC controller PCA (location J86; Remove the following assemblies: q Top cover. See "Top cover" on page 149. 2. Note Hint Print-cartridge motor (HP LaserJet 4300 series printer only) This motor is not installed on the...
Service Manual
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Support the motor and remove three screws (callout 4). Remove the print-cartridge motor. 3 4 Figure 122. Print-cartridge motor (HP Laserjet 4300 series only; 1 of its retainer clip. Slip the toroid (callout 3) off of 2) 176 Removing and replacing parts Q2431-90912 3.
Support the motor and remove three screws (callout 4). Remove the print-cartridge motor. 3 4 Figure 122. Print-cartridge motor (HP Laserjet 4300 series only; 1 of its retainer clip. Slip the toroid (callout 3) off of 2) 176 Removing and replacing parts Q2431-90912 3.
Service Manual
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q Right-side fan (HP LaserJet 4300 series only) and fan duct. q Print-cartridge motor (HP LaserJet 4300 series only). Main drive assembly 1. Remove the following assemblies: q Top and right-side covers. See "Cooling fan (right side; See "DC controller PCA" on...-side cover" on page 181. 2. q DC controller PCA. Main drive assembly (1 of 2) 186 Removing and replacing parts Q2431-90912 See "Print-cartridge motor (HP LaserJet 4300 series printer only)" on page 170. Lift up the power switch arm (callout 2) and rotate it away from the chassis. 2 1 Figure 137. Use needle-nose pliers ...
q Right-side fan (HP LaserJet 4300 series only) and fan duct. q Print-cartridge motor (HP LaserJet 4300 series only). Main drive assembly 1. Remove the following assemblies: q Top and right-side covers. See "Cooling fan (right side; See "DC controller PCA" on...-side cover" on page 181. 2. q DC controller PCA. Main drive assembly (1 of 2) 186 Removing and replacing parts Q2431-90912 See "Print-cartridge motor (HP LaserJet 4300 series printer only)" on page 170. Lift up the power switch arm (callout 2) and rotate it away from the chassis. 2 1 Figure 137. Use needle-nose pliers ...
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... tab on page 170) can freely move freely, or return to the chassis with the flag spring positioned in the hole in the transfer assembly. HP LaserJet 4300 series printer only)" on the flag (see "Cooling fan (right side; Verify that this sensor-flag spring is inserted into the hole in Figure 153). See ... Fasten the paper feed assembly to the upright position, an error message (13.20.00 JAM) will appear on the control-panel display when the printer power is turned on the right side of the paper feed assembly is installed correctly. If a paper-jam error message (13.20.00 JAM) appears...
... tab on page 170) can freely move freely, or return to the chassis with the flag spring positioned in the hole in the transfer assembly. HP LaserJet 4300 series printer only)" on the flag (see "Cooling fan (right side; Verify that this sensor-flag spring is inserted into the hole in Figure 153). See ... Fasten the paper feed assembly to the upright position, an error message (13.20.00 JAM) will appear on the control-panel display when the printer power is turned on the right side of the paper feed assembly is installed correctly. If a paper-jam error message (13.20.00 JAM) appears...
Service Manual
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...239 Press the SELECT ( ) button to help restore values after servicing the printer. The informational pages for example, the number of pages of the menu map series describes instructions about how to calculate toner usage). The last page of various paper...printer serial number and tray size settings appear on page 39. q Menu map: A menu map shows how individual items are available: q Menu map q Configuration q Supplies status q File directory q Usage page q PCL and PS font list 5. q File directory: This page provides information about control panel menus, see the HP LaserJet 4200/4300...
...239 Press the SELECT ( ) button to help restore values after servicing the printer. The informational pages for example, the number of pages of the menu map series describes instructions about how to calculate toner usage). The last page of various paper...printer serial number and tray size settings appear on page 39. q Menu map: A menu map shows how individual items are available: q Menu map q Configuration q Supplies status q File directory q Usage page q PCL and PS font list 5. q File directory: This page provides information about control panel menus, see the HP LaserJet 4200/4300...
Service Manual
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...the test-page switch is functioning, print an engine test page. Engine test-page switch Formatter test page To verify that the printer engine (all printer components except the formatter, formatter DIMMs, EIO products, and the stacker or stapler/stacker) is depressed. Press the SELECT ( )...to PRINT CONFIGURATION. 5. Engine test page To verify that the formatter is almost certainly with the engine test. The test page should have a series of the printer (callout 1). Press the DOWN ARROW ( ) button to scroll to open the MENUS. 2. Test pages Printing test pages helps you printed from...
...the test-page switch is functioning, print an engine test page. Engine test-page switch Formatter test page To verify that the printer engine (all printer components except the formatter, formatter DIMMs, EIO products, and the stacker or stapler/stacker) is depressed. Press the SELECT ( )...to PRINT CONFIGURATION. 5. Engine test page To verify that the formatter is almost certainly with the engine test. The test page should have a series of the printer (callout 1). Press the DOWN ARROW ( ) button to scroll to open the MENUS. 2. Test pages Printing test pages helps you printed from...
