Service Manual
Page 10
......168 Before performing service 169 After completing service ...169 Screws used in the printer 170 Parts-removal tree ...171 Printer input tray, and cabinet wheel locks 172 Dc controller PCA diagram 173 User-replaceable parts ...175 Print cartridge ...175 Transfer roller ...177 Fuser...178 Tray 1 pickup roller ...179...supply...236 Paper-feed belt assembly 243 Motors and fans...2. 45 Main cooling fan (left side 246 Cooling fan, right side (HP LaserJet 4250/4300/4350 Series printers only 248 Removing the fan without removing the air duct 248 Removing the fan and the air duct together ...
......168 Before performing service 169 After completing service ...169 Screws used in the printer 170 Parts-removal tree ...171 Printer input tray, and cabinet wheel locks 172 Dc controller PCA diagram 173 User-replaceable parts ...175 Print cartridge ...175 Transfer roller ...177 Fuser...178 Tray 1 pickup roller ...179...supply...236 Paper-feed belt assembly 243 Motors and fans...2. 45 Main cooling fan (left side 246 Cooling fan, right side (HP LaserJet 4250/4300/4350 Series printers only 248 Removing the fan without removing the air duct 248 Removing the fan and the air duct together ...
Service Manual
Page 13
...404 Paper-transport errors...406 Malfunction errors...406 Component errors...407 Printer-component locations...409 Main printer parts...409 Printer switches and sensors 413 Printer motors and fans...414 Printer PCAs...415 Accessory component locations...416 500-...parts 418 1,500-sheet feeder switches, sensors, solenoids, and PCAs 420 Stapler/stacker stapler assembly 421 Stacker and stapler/stacker switches and sensors 422 Stacker and stapler/stacker motors and solenoids 423 Stacker and stapler/stacker PCAs 424 Printer and accessory wiring diagrams 425 HP LaserJet 4200 wiring diagram...
...404 Paper-transport errors...406 Malfunction errors...406 Component errors...407 Printer-component locations...409 Main printer parts...409 Printer switches and sensors 413 Printer motors and fans...414 Printer PCAs...415 Accessory component locations...416 500-...parts 418 1,500-sheet feeder switches, sensors, solenoids, and PCAs 420 Stapler/stacker stapler assembly 421 Stacker and stapler/stacker switches and sensors 422 Stacker and stapler/stacker motors and solenoids 423 Stacker and stapler/stacker PCAs 424 Printer and accessory wiring diagrams 425 HP LaserJet 4200 wiring diagram...
Service Manual
Page 14
...-feeder-accessory wiring diagram 433 Stacker-accessory wiring diagram 434 Stapler/stacker-accessory wiring diagram 435 Dc controller connectors diagram 436 General timing diagrams...437 HP LaserJet 4200 general timing diagram 438 HP LaserJet 4250 general timing diagram 439 HP LaserJet 4300 general timing diagram 440 HP LaserJet 4350 general timing diagram 441 Stapler/stacker timing diagram 442 8 Parts and diagrams Chapter contents...443 Ordering parts and supplies...444 Parts...444 Related documentation...
...-feeder-accessory wiring diagram 433 Stacker-accessory wiring diagram 434 Stapler/stacker-accessory wiring diagram 435 Dc controller connectors diagram 436 General timing diagrams...437 HP LaserJet 4200 general timing diagram 438 HP LaserJet 4250 general timing diagram 439 HP LaserJet 4300 general timing diagram 440 HP LaserJet 4350 general timing diagram 441 Stapler/stacker timing diagram 442 8 Parts and diagrams Chapter contents...443 Ordering parts and supplies...444 Parts...444 Related documentation...
Service Manual
Page 100
..., print either a configuration page (see Configuration page) or a supplies status page (see Supplies status page). To order the printer maintenance kit, see Parts and diagrams. The kit includes the following components: ■ Fuser ■ Printer rollers (transfer, feed, and separation, and tray 1 pickup) ■ Tray...following procedure. 1 Turn the printer power off. 2 Hold down until all three printer control-panel lights flash once and then remain on HP LaserJet 4250/4350 Series printers. This might take up to 10 seconds. 3 Press (UP ARROW button) to scroll to NEW MAINTENANCE KIT. 4...
..., print either a configuration page (see Configuration page) or a supplies status page (see Supplies status page). To order the printer maintenance kit, see Parts and diagrams. The kit includes the following components: ■ Fuser ■ Printer rollers (transfer, feed, and separation, and tray 1 pickup) ■ Tray...following procedure. 1 Turn the printer power off. 2 Hold down until all three printer control-panel lights flash once and then remain on HP LaserJet 4250/4350 Series printers. This might take up to 10 seconds. 3 Press (UP ARROW button) to scroll to NEW MAINTENANCE KIT. 4...
Service Manual
Page 185
The superscript indicates that this component must be removed before you can gain access to the registration-roller assembly. NOTE Some components in which parts must be removed before you can gain access to some of the other components. NOTE The formatter assembly and fuser are only listed once, but they must be removed. Parts-removal tree Use the following diagram to determine the order in the parts-removal tree have a superscript number listed next to the component name (for example, "Right-side cover1"). Removal and replacement strategy 171
The superscript indicates that this component must be removed before you can gain access to the registration-roller assembly. NOTE Some components in which parts must be removed before you can gain access to some of the other components. NOTE The formatter assembly and fuser are only listed once, but they must be removed. Parts-removal tree Use the following diagram to determine the order in the parts-removal tree have a superscript number listed next to the component name (for example, "Right-side cover1"). Removal and replacement strategy 171
Service Manual
Page 355
information. 2 Press ( UP ARROW button) and (DOWN ARROW button) to order a maintenance kit, see Parts and diagrams. A firmware upgrade is completed. See the instructions that the output bin flapper (the four plastic paddles hanging down in front of ...blinks in progress. Replace the memory DIMM. REGISTRATION PAGE RAM DISK DEVICE FAILURE alternates with Ready For menus press Performing upgrade Printing... Install an HP LaserJet 4200/4250/4300/4350 printer maintenance kit. again. 2 If this message persists, replace the stacker or stapler/stacker. The jam-access door or the...
information. 2 Press ( UP ARROW button) and (DOWN ARROW button) to order a maintenance kit, see Parts and diagrams. A firmware upgrade is completed. See the instructions that the output bin flapper (the four plastic paddles hanging down in front of ...blinks in progress. Replace the memory DIMM. REGISTRATION PAGE RAM DISK DEVICE FAILURE alternates with Ready For menus press Performing upgrade Printing... Install an HP LaserJet 4200/4250/4300/4350 printer maintenance kit. again. 2 If this message persists, replace the stacker or stapler/stacker. The jam-access door or the...
Service Manual
Page 457
8 Parts and diagrams Chapter contents ● Ordering parts and supplies ● Consumables and accessories ● Covers ● Internal components ● Accessories ● Alphabetical parts list ● Numerical parts list Chapter contents 443
8 Parts and diagrams Chapter contents ● Ordering parts and supplies ● Consumables and accessories ● Covers ● Internal components ● Accessories ● Alphabetical parts list ● Numerical parts list Chapter contents 443
Service Manual
Page 458
... /supplies Asia Pacific: http://www.hp.com/paper 444 8 Parts and diagrams You can easily find all the HP information that have been specifically designed for HP partners) http://www.hp.com/partners/csn HP CSN is an Internet site that are not field replacement parts and cannot be ordered from an authorized HP service or support provider, or...
... /supplies Asia Pacific: http://www.hp.com/paper 444 8 Parts and diagrams You can easily find all the HP information that have been specifically designed for HP partners) http://www.hp.com/partners/csn HP CSN is an Internet site that are not field replacement parts and cannot be ordered from an authorized HP service or support provider, or...
Service Manual
Page 460
Consumables are available directly from HP at the following numbers: ■ US: 1-800-HPINVENT ■ Canada: 1-800-474-6836 ■ United Kingdom: 0734-441212 ■ Germany: 0130-3322 Contact your local HP Parts Coordinator for other local phone numbers. 446 8 Parts and diagrams Supplies See Ordering parts and supplies.
Consumables are available directly from HP at the following numbers: ■ US: 1-800-HPINVENT ■ Canada: 1-800-474-6836 ■ United Kingdom: 0734-441212 ■ Germany: 0130-3322 Contact your local HP Parts Coordinator for other local phone numbers. 446 8 Parts and diagrams Supplies See Ordering parts and supplies.
Service Manual
Page 466
...Ethernet internal print server (for HP LaserJet 4200/4300 printers only) J6057A 1 HP Jetdirect 620n Fast Ethernet internal print server for HP LaserJet 4250/4350 printers J7934A 1 HP Jetdirect 625n Gigabit internal print server for HP LaserJet 4250/4350 printers J7960A 1 HP Jetdirect 680n 802.11b wireless Ethernet internal print J6058A server for HP LaserJet 4250/4350 printers 1 HP bt1300 Bluetooth wireless printer adapter ...69001 J7934-61001/J7934-69001 J7960-61001 J6058-61201 J6072-61001/J6072-69001 J4135-61001 5063-1256 5063-1257 8120-5301 8121-0740 452 8 Parts and diagrams
...Ethernet internal print server (for HP LaserJet 4200/4300 printers only) J6057A 1 HP Jetdirect 620n Fast Ethernet internal print server for HP LaserJet 4250/4350 printers J7934A 1 HP Jetdirect 625n Gigabit internal print server for HP LaserJet 4250/4350 printers J7960A 1 HP Jetdirect 680n 802.11b wireless Ethernet internal print J6058A server for HP LaserJet 4250/4350 printers 1 HP bt1300 Bluetooth wireless printer adapter ...69001 J7934-61001/J7934-69001 J7960-61001 J6058-61201 J6072-61001/J6072-69001 J4135-61001 5063-1256 5063-1257 8120-5301 8121-0740 452 8 Parts and diagrams
Service Manual
Page 468
Description 1 500-sheet universal replacement tray 2 Feed roller assembly 3 Registration assembly Details See Figure 8-14 500-sheet feeder (1 of 3). 454 8 Parts and diagrams See Figure 8-11 Feed roller assembly. See Figure 8-6 Internal components (1 of 2). Assembly locations (1 of 3) Ref.
Description 1 500-sheet universal replacement tray 2 Feed roller assembly 3 Registration assembly Details See Figure 8-14 500-sheet feeder (1 of 3). 454 8 Parts and diagrams See Figure 8-11 Feed roller assembly. See Figure 8-6 Internal components (1 of 2). Assembly locations (1 of 3) Ref.
Service Manual
Page 470
Description 8 Duplexing-pendulum assembly 9 Main-drive assembly 10 Paper-pickup-drive assembly 11 Lifter-drive assembly Details See Figure 8-8 Internal components (3 of 3). 456 8 Parts and diagrams See Figure 8-8 Internal components (3 of 3). See Figure 8-10 Main drive assembly See Figure 8-7 Internal components (2 of 3) Ref. Assembly locations (3 of 3).
Description 8 Duplexing-pendulum assembly 9 Main-drive assembly 10 Paper-pickup-drive assembly 11 Lifter-drive assembly Details See Figure 8-8 Internal components (3 of 3). 456 8 Parts and diagrams See Figure 8-8 Internal components (3 of 3). See Figure 8-10 Main drive assembly See Figure 8-7 Internal components (2 of 3) Ref. Assembly locations (3 of 3).
Service Manual
Page 474
...Part number Qty 13 Overlay, control panel, CS/HU/PL/EL (LJ 4250/4350) Q5400-60103 1 13 Overlay, control panel, NO/SV/FI (LJ 4250/4350) Q5400-60104 1 13 Overlay, control panel, ES/PT/IT (LJ 4250/4350) Q5400-60105 1 13 Overlay, control panel, EN/RU/TR (LJ 4250...4250/4350) Q5400-60107 1 13 Overlay, control panel, EN/DE/FR/NL (LJ 4250/4350) Q5400-60108 1 13 Overlay, control panel, FR (LJ 4250/4350) Q5400-60109 1 13 Overlay, control panel, AR (LJ 4250... Q3994-40004 1 (not shown) Name plate kit, LJ 4250 Q5400-67911 1 (not shown) Name plate kit, LJ 4350 Q5406-67912 1 ...
...Part number Qty 13 Overlay, control panel, CS/HU/PL/EL (LJ 4250/4350) Q5400-60103 1 13 Overlay, control panel, NO/SV/FI (LJ 4250/4350) Q5400-60104 1 13 Overlay, control panel, ES/PT/IT (LJ 4250/4350) Q5400-60105 1 13 Overlay, control panel, EN/RU/TR (LJ 4250...4250/4350) Q5400-60107 1 13 Overlay, control panel, EN/DE/FR/NL (LJ 4250/4350) Q5400-60108 1 13 Overlay, control panel, FR (LJ 4250/4350) Q5400-60109 1 13 Overlay, control panel, AR (LJ 4250... Q3994-40004 1 (not shown) Name plate kit, LJ 4250 Q5400-67911 1 (not shown) Name plate kit, LJ 4350 Q5406-67912 1 ...
Service Manual
Page 476
Internal components Figure 8-6 Internal components (1 of 3) 462 8 Parts and diagrams
Internal components Figure 8-6 Internal components (1 of 3) 462 8 Parts and diagrams
Service Manual
Page 478
Ref Description 501 Screw, tapping, pan head, m4x10 502 Screw, w/washer, m3x6 Part number Qty XB4-7401-007CN 14 XB2-7300-607CN 2 464 8 Parts and diagrams
Ref Description 501 Screw, tapping, pan head, m4x10 502 Screw, w/washer, m3x6 Part number Qty XB4-7401-007CN 14 XB2-7300-607CN 2 464 8 Parts and diagrams
Service Manual
Page 482
...502 Screw, tapping, truss head, m3x8 XB4-7300-809CN 1 503 Screw, tapping, truss head, m4x8 XB4-7400-809CN 2 468 8 Parts and diagrams Ref Description Part number Qty 31 Sheet, solenoid damper RC1-0330-020CN 1 32A Cable, feeder connector (LJ 4200/4300) RG1-4223-000CN 1 32A Cable,... feeder connector (LJ 4250/4350) RM1-1192-000CN 1 33 Kicker assembly RL1-0015-000CN 1 35 Size-sensing assembly, tray 2 RM1-...
...502 Screw, tapping, truss head, m3x8 XB4-7300-809CN 1 503 Screw, tapping, truss head, m4x8 XB4-7400-809CN 2 468 8 Parts and diagrams Ref Description Part number Qty 31 Sheet, solenoid damper RC1-0330-020CN 1 32A Cable, feeder connector (LJ 4200/4300) RG1-4223-000CN 1 32A Cable,... feeder connector (LJ 4250/4350) RM1-1192-000CN 1 33 Kicker assembly RL1-0015-000CN 1 35 Size-sensing assembly, tray 2 RM1-...
Service Manual
Page 486
Ref Description Part number Qty 26 Cable, fuser (LJ 4300) RG1-4231-000CN 1 27 Paper-delivery assembly RM1-0026-040CN 1 28 Duplexing-pendulum assembly RM1-0002-020CN 1 29 Lifter-drive assembly (LJ 4200/4300) RM1-0033-020CN 1 29 Lifter-drive assembly (LJ 4250/4350) RM1-1074-000CN 1 ...30 Tray 1 pickup assembly (LJ 4200/4300) (also see Figure 8-12 RM1-0004-060CN 1 Tray 1 pickup assembly) 30 Tray 1 pickup assembly (LJ 4250/4350) (also see Figure 8-12 RM1-1097-000CN 1 Tray 1 pickup assembly) 501 Screw, tapping, pan head, m4x10 XB4-7401-007CN 4 502 Screw, tapping...
Ref Description Part number Qty 26 Cable, fuser (LJ 4300) RG1-4231-000CN 1 27 Paper-delivery assembly RM1-0026-040CN 1 28 Duplexing-pendulum assembly RM1-0002-020CN 1 29 Lifter-drive assembly (LJ 4200/4300) RM1-0033-020CN 1 29 Lifter-drive assembly (LJ 4250/4350) RM1-1074-000CN 1 ...30 Tray 1 pickup assembly (LJ 4200/4300) (also see Figure 8-12 RM1-0004-060CN 1 Tray 1 pickup assembly) 30 Tray 1 pickup assembly (LJ 4250/4350) (also see Figure 8-12 RM1-1097-000CN 1 Tray 1 pickup assembly) 501 Screw, tapping, pan head, m4x10 XB4-7401-007CN 4 502 Screw, tapping...