Service Manual
Page 11
... panel for tray 2 231 Figure 83. Screws on formatter board 256 Figure 107. Connectors on right cover subassembly 240 Figure 93. Laser/scanner shield 247 Figure 99. Scanner unit 248 Figure 100. Registration roller assembly (back 264 EN List of printer and accessories: top... cover 228 Figure 80. Screws behind left rear cover 235 Figure 88. Figure 75. Orientation of 2 258 Figure 110. Attachment bracket, HP Color LaserJet 8550 MFP printer 227 Figure 78. Inside left 226 Figure 77. Spring on the right upper door 238 Figure 91. Face-up solenoid (1 of...
... panel for tray 2 231 Figure 83. Screws on formatter board 256 Figure 107. Connectors on right cover subassembly 240 Figure 93. Laser/scanner shield 247 Figure 99. Scanner unit 248 Figure 100. Registration roller assembly (back 264 EN List of printer and accessories: top... cover 228 Figure 80. Screws behind left rear cover 235 Figure 88. Figure 75. Orientation of 2 258 Figure 110. Attachment bracket, HP Color LaserJet 8550 MFP printer 227 Figure 78. Inside left 226 Figure 77. Spring on the right upper door 238 Figure 91. Face-up solenoid (1 of...
Service Manual
Page 12
... 122. Controller PCA 307 Figure 157. Tray 1 pick-up assembly (1 of 2 269 Figure 121. Developer/imaging drum bias supply, HP Color LaserJet 8550 printer 288 Figure 140. Paper pick-up assembly 267 Figure 119. Fans 1 and 2 housing assemblies 283 Figure 135. Developer/imaging drum...Right cover with formatter pan removed 271 Figure 123. Rear of the 2,000-sheet input unit 299 Figure 150. Controller board, HP Color LaserJet 8550 MFP printer 277 Figure 129. Lower air duct 285 Figure 137. High-voltage power supply 291 Figure 143. Tray 4 removal 305 Figure...
... 122. Controller PCA 307 Figure 157. Tray 1 pick-up assembly (1 of 2 269 Figure 121. Developer/imaging drum bias supply, HP Color LaserJet 8550 printer 288 Figure 140. Paper pick-up assembly 267 Figure 119. Fans 1 and 2 housing assemblies 283 Figure 135. Developer/imaging drum...Right cover with formatter pan removed 271 Figure 123. Rear of the 2,000-sheet input unit 299 Figure 150. Controller board, HP Color LaserJet 8550 MFP printer 277 Figure 129. Lower air duct 285 Figure 137. High-voltage power supply 291 Figure 143. Tray 4 removal 305 Figure...
Service Manual
Page 23
... and their paper-handling optional accessories: HP Color LaserJet 8500 printer (base model) HP Color LaserJet 8500 N printer HP Color LaserJet 8500 DN printer HP Color LaserJet 8550 printer (base model) HP Color LaserJet 8550 N printer HP Color LaserJet 8550 DN printer HP Color LaserJet 8550 GN printer HP Color LaserJet 8550 MFP-print engine only Service topics for all service information related to these devices. See the HP Color LaserJet 8550 MFP printer service manual for the HP Color LaserJet 8550 MFP printer's copy module, automatic document feeder, and...
... and their paper-handling optional accessories: HP Color LaserJet 8500 printer (base model) HP Color LaserJet 8500 N printer HP Color LaserJet 8500 DN printer HP Color LaserJet 8550 printer (base model) HP Color LaserJet 8550 N printer HP Color LaserJet 8550 DN printer HP Color LaserJet 8550 GN printer HP Color LaserJet 8550 MFP-print engine only Service topics for all service information related to these devices. See the HP Color LaserJet 8550 MFP printer service manual for the HP Color LaserJet 8550 MFP printer's copy module, automatic document feeder, and...
Service Manual
Page 26
Product information EN Electrical specifications Item Power requirements Power consumption (typical): During printing (b/w) During printing (color) During standby During Power Save mode During Off mode Minimum recommended circuit capacity for dimensions that include copy ...(average) 375 W (average) 190 W (average) less than 45 W less than 2 W 6.0 A at 120 V 220-volt models 220 to 10,000 feet) Note See the HP Color LaserJet 8550 MFP printer service manual for typical product 110-volt models 100 to 127 V (+/- 10%) 50/60 Hz (+/- 2 Hz) 750 W (average) 375 W (average) 190 W (average)...
Product information EN Electrical specifications Item Power requirements Power consumption (typical): During printing (b/w) During printing (color) During standby During Power Save mode During Off mode Minimum recommended circuit capacity for dimensions that include copy ...(average) 375 W (average) 190 W (average) less than 45 W less than 2 W 6.0 A at 120 V 220-volt models 220 to 10,000 feet) Note See the HP Color LaserJet 8550 MFP printer service manual for typical product 110-volt models 100 to 127 V (+/- 10%) 50/60 Hz (+/- 2 Hz) 750 W (average) 375 W (average) 190 W (average)...
Service Manual
Page 30
Product information EN Note Space requirements See the HP Color LaserJet 8550 MFP printer service manual for space requirements for the copy module, automatic document feeder, and 1,000-sheet input paper deck. 290 mm 11 in 1404 mm ...
Product information EN Note Space requirements See the HP Color LaserJet 8550 MFP printer service manual for space requirements for the copy module, automatic document feeder, and 1,000-sheet input paper deck. 290 mm 11 in 1404 mm ...
Service Manual
Page 42
... print server (10/ 100 Base-TX), an internal hard disk, five stabilizing legs, and a highperformance processor. HP Color LaserJet 8550 GN The HP Color LaserJet 8550GN comes standard with a 100-sheet tray 1, a 500-sheet tray 3, a printer stand, and 32 MB RAM. HP Color LaserJet 8550 MFP The HP Color LaserJet 8550MFP comes standard with a 100-sheet tray 1, a 500-sheet tray 2, a 500-sheet tray 3, a printer stand, 64...
... print server (10/ 100 Base-TX), an internal hard disk, five stabilizing legs, and a highperformance processor. HP Color LaserJet 8550 GN The HP Color LaserJet 8550GN comes standard with a 100-sheet tray 1, a 500-sheet tray 3, a printer stand, and 32 MB RAM. HP Color LaserJet 8550 MFP The HP Color LaserJet 8550MFP comes standard with a 100-sheet tray 1, a 500-sheet tray 2, a 500-sheet tray 3, a printer stand, 64...
Service Manual
Page 43
...output bin 7 Top (face-down) output bin 8 Flip-up media stop (HP Color LaserJet 8500 models only) 3 Front door handle 9 Right upper cover 4 Input tray 2 (not included on 10 Input tray 1 the HP Color LaserJet 8550 base model, but available as 11 Right lower cover an option) 12 Printer ...standby button N models only) 6 Input tray 3 Note The power/standby button shown above is immobilized in HP Color LaserJet 8550 MFP printers. EN Printer Information 41 See the HP Color LaserJet 8550 MFP printer user guide for more information. Use the power button at the top, right of the copy module ...
...output bin 7 Top (face-down) output bin 8 Flip-up media stop (HP Color LaserJet 8500 models only) 3 Front door handle 9 Right upper cover 4 Input tray 2 (not included on 10 Input tray 1 the HP Color LaserJet 8550 base model, but available as 11 Right lower cover an option) 12 Printer ...standby button N models only) 6 Input tray 3 Note The power/standby button shown above is immobilized in HP Color LaserJet 8550 MFP printers. EN Printer Information 41 See the HP Color LaserJet 8550 MFP printer user guide for more information. Use the power button at the top, right of the copy module ...
Service Manual
Page 50
...a domestic environment this device must accept any interference received, including interference that the product Product Name: Model Number: Product Options: HP Color LaserJet 8550, 8550 N, 8550 DN, 8550 GN, 8550 MFP C7096A, C7097A, C7098A, C7099A, C7835A, C7836A ALL conforms to the following Product Specifications: Safety: IEC 950:1991+A1+A2+...A3+A4 / EN 60950:1992+A1+A2+A3+A4+A11 IEC 825-1:1993 / EN 60825-1:1994+A11 Class 1 (Laser/LED)...
...a domestic environment this device must accept any interference received, including interference that the product Product Name: Model Number: Product Options: HP Color LaserJet 8550, 8550 N, 8550 DN, 8550 GN, 8550 MFP C7096A, C7097A, C7098A, C7099A, C7835A, C7836A ALL conforms to the following Product Specifications: Safety: IEC 950:1991+A1+A2+...A3+A4 / EN 60950:1992+A1+A2+A3+A4+A11 IEC 825-1:1993 / EN 60825-1:1994+A11 Class 1 (Laser/LED)...
Service Manual
Page 55
... including interference that may cause undesired operation. Box 15 Mail Stop 160, Boise, ID 83707-0015 (Phone: 208-396-6000) Note See the HP Color LaserJet 8550 MFP printer Service Manual for Declarations of the FCC rules. Quality System This product was tested in conformity with: EMC: CISPR 22:1993+A1+A2 /...IEC 950:1991+A1+A2+A3+A4+A11 / EN 60950:1992+A1+A2+A3+A4+A11 IEC 825-1:1993 / EN 60825-1:1994 Class 1 (Laser/LED) UL1950, Third Edition Additional Information: The product herewith complies with Part 15 of Conformity for the copy module, automatic document feeder, and 1,000...
... including interference that may cause undesired operation. Box 15 Mail Stop 160, Boise, ID 83707-0015 (Phone: 208-396-6000) Note See the HP Color LaserJet 8550 MFP printer Service Manual for Declarations of the FCC rules. Quality System This product was tested in conformity with: EMC: CISPR 22:1993+A1+A2 /...IEC 950:1991+A1+A2+A3+A4+A11 / EN 60950:1992+A1+A2+A3+A4+A11 IEC 825-1:1993 / EN 60825-1:1994 Class 1 (Laser/LED) UL1950, Third Edition Additional Information: The product herewith complies with Part 15 of Conformity for the copy module, automatic document feeder, and 1,000...
Service Manual
Page 63
...support provider. When repairing an HP Color LaserJet 8550 MFP printer, first isolate the location of the field-replaceable units. Parts and supplies Field replaceable and accessory part numbers are found in chapter 7. Replacement parts can be ordered from SME, SMO, and HP Distribution Center (HPD). The ... Address Hewlett-Packard Company Support Materials Organization 8050 Foothills Blvd. Once a faulty part is located, repair is sufficient to the HP Color LaserJet 8550 MFP printer. only) (49 7031) 14-2253 (805) 257-5565 (805) 257-6995 Fax EN Introduction 61 Introduction Repair ...
...support provider. When repairing an HP Color LaserJet 8550 MFP printer, first isolate the location of the field-replaceable units. Parts and supplies Field replaceable and accessory part numbers are found in chapter 7. Replacement parts can be ordered from SME, SMO, and HP Distribution Center (HPD). The ... Address Hewlett-Packard Company Support Materials Organization 8050 Foothills Blvd. Once a faulty part is located, repair is sufficient to the HP Color LaserJet 8550 MFP printer. only) (49 7031) 14-2253 (805) 257-5565 (805) 257-6995 Fax EN Introduction 61 Introduction Repair ...
Service Manual
Page 71
... recommended for further warranty information. Toner cartridge information The toner cartridge is optional with the HP Color LaserJet 8500 DN printer and is from the use a toner cartridge before the expiration date stamped on the printer is required with the HP Color LaserJet 8550 MFP. The toner cartridge contains part of the printing mechanism and a supply of a new...
... recommended for further warranty information. Toner cartridge information The toner cartridge is optional with the HP Color LaserJet 8500 DN printer and is from the use a toner cartridge before the expiration date stamped on the printer is required with the HP Color LaserJet 8550 MFP. The toner cartridge contains part of the printing mechanism and a supply of a new...
Service Manual
Page 75
... Service Manual for descriptions of the various printer configurations. EN Verifying package contents 73 Contents of HP Color LaserJet 8550 MFP printers. See Chapter 1 for package contents of printer box 1 Four toner cartridges: black, cyan, magenta, ...5 Imaging drum 6 Printer control panel overlay (if applicable) 7 Media size labels 8 Left (face-up) output bin 9 An HP Color LaserJet 8500 (shown above), 8500 N, 8500 DN, 8550, 8550 N, 8550 DN, 8550 GN, or 8550 MFP printer. Verifying package contents Verify that the following items were included from the factory: 4 5 1 6 9 7 2 8 3 ...
... Service Manual for descriptions of the various printer configurations. EN Verifying package contents 73 Contents of HP Color LaserJet 8550 MFP printers. See Chapter 1 for package contents of printer box 1 Four toner cartridges: black, cyan, magenta, ...5 Imaging drum 6 Printer control panel overlay (if applicable) 7 Media size labels 8 Left (face-up) output bin 9 An HP Color LaserJet 8500 (shown above), 8500 N, 8500 DN, 8550, 8550 N, 8550 DN, 8550 GN, or 8550 MFP printer. Verifying package contents Verify that the following items were included from the factory: 4 5 1 6 9 7 2 8 3 ...
Service Manual
Page 99
... copy module. Only - All other keys are active while the display language is made by restarting the printer in English) appears on again. See the HP Color LaserJet 8550 MFP printer Service Manual for approximately one second, release SELECT. However, because no display language was selected, the LANGUAGE = ENGLISH message reappears (after the power-on...
... copy module. Only - All other keys are active while the display language is made by restarting the printer in English) appears on again. See the HP Color LaserJet 8550 MFP printer Service Manual for approximately one second, release SELECT. However, because no display language was selected, the LANGUAGE = ENGLISH message reappears (after the power-on...
Service Manual
Page 108
Verifying DIMM installation The HP Color LaserJet 8500 printer comes with the following amounts of DRAM are not supported. 7 5 3 1 8 6 4 2 Figure 15....in slots 1 and 2: l 16-MB DIMMs in the base and N models l 32-MB DIMMs in the DN model The HP Color LaserJet 8550 printer comes with the same amount of memory installed in slots 1 and 2: l 16-MB DIMMs in the base model l 32...-MB DIMMs in the N, DN, and MFP models (2 x 32 = 64) l 64-MB DIMMs in the GN model (2 x 64 = 128) In all printer models, slots 3 through...
Verifying DIMM installation The HP Color LaserJet 8500 printer comes with the following amounts of DRAM are not supported. 7 5 3 1 8 6 4 2 Figure 15....in slots 1 and 2: l 16-MB DIMMs in the base and N models l 32-MB DIMMs in the DN model The HP Color LaserJet 8550 printer comes with the same amount of memory installed in slots 1 and 2: l 16-MB DIMMs in the base model l 32...-MB DIMMs in the N, DN, and MFP models (2 x 32 = 64) l 64-MB DIMMs in the GN model (2 x 64 = 128) In all printer models, slots 3 through...
Service Manual
Page 112
To reset the HP TonerGauge: If the NEW TONER CARTRIDGE=NO message is no longer displayed on the status tab of the toner cartridges, then press MENU repeatedly until the correct color appears. 4 Press SELECT to save the selection. 3 NEW TONER=BLACK will appear. ...job. HP TonerGauge (HP Color LaserJet 8550) Note Note The HP TonerGauge feature is not enabled on the control panel for the network administrator). When the top cover is closed after the printer has detected a toner low condition, the NEW TONER CARTRIDGE=NO message is displayed on HP Color LaserJet 8550 MFP printers...
To reset the HP TonerGauge: If the NEW TONER CARTRIDGE=NO message is no longer displayed on the status tab of the toner cartridges, then press MENU repeatedly until the correct color appears. 4 Press SELECT to save the selection. 3 NEW TONER=BLACK will appear. ...job. HP TonerGauge (HP Color LaserJet 8550) Note Note The HP TonerGauge feature is not enabled on the control panel for the network administrator). When the top cover is closed after the printer has detected a toner low condition, the NEW TONER CARTRIDGE=NO message is displayed on HP Color LaserJet 8550 MFP printers...
Service Manual
Page 229
HP Color LaserJet 8500 MFP printer-separating the printer from the frame 1 Remove two screws (callout 1) from the attachment bracket. 12 2 Figure 77. Attachment bracket, HP Color LaserJet 8550 MFP printer 3 On each side at the bottom of the rack, rotate the locking pins (callout 3) until they slide out of the printer to release the attachment cover. 2 Remove two screws (callout 2) from the attachment cover on the left side of the holes. 32 Figure 78. Locking pins 4 Roll the printer off of the rack. EN Doors and covers 227
HP Color LaserJet 8500 MFP printer-separating the printer from the frame 1 Remove two screws (callout 1) from the attachment bracket. 12 2 Figure 77. Attachment bracket, HP Color LaserJet 8550 MFP printer 3 On each side at the bottom of the rack, rotate the locking pins (callout 3) until they slide out of the printer to release the attachment cover. 2 Remove two screws (callout 2) from the attachment cover on the left side of the holes. 32 Figure 78. Locking pins 4 Roll the printer off of the rack. EN Doors and covers 227
Service Manual
Page 245
b Remove three screws (callout 2) from inside the opening; Plate, HP Color LaserJet 8550 MFP printer EN Doors and covers 243 the plate remains attached to disconnect the video I/O connector. Rear cover 1 For HP Color LaserJet 8550 MFP printer models, complete the following steps before continuing to step 2 on the following page: a Release two thumb screws (callout 1) to the rear cover. 12 2 Figure 95.
b Remove three screws (callout 2) from inside the opening; Plate, HP Color LaserJet 8550 MFP printer EN Doors and covers 243 the plate remains attached to disconnect the video I/O connector. Rear cover 1 For HP Color LaserJet 8550 MFP printer models, complete the following steps before continuing to step 2 on the following page: a Release two thumb screws (callout 1) to the rear cover. 12 2 Figure 95.
Service Manual
Page 279
Shown in figure 128 is located on page 278. 12 Figure 128. EN Rear assemblies 277 Controller board The controller board is a controller board in an HP Color LaserJet 8550 MFP printer and includes the ECO board cable (callout 1). Controller board, HP Color LaserJet 8550 MFP printer Note Controller board removal procedures, which begin on page 278, change only in the locations of connectors from an HP Color LaserJet 8500 printer, in figure 129 on the lower left side of the rear of the printer. Compare the controller board to the same part from one printer to another.
Shown in figure 128 is located on page 278. 12 Figure 128. EN Rear assemblies 277 Controller board The controller board is a controller board in an HP Color LaserJet 8550 MFP printer and includes the ECO board cable (callout 1). Controller board, HP Color LaserJet 8550 MFP printer Note Controller board removal procedures, which begin on page 278, change only in the locations of connectors from an HP Color LaserJet 8500 printer, in figure 129 on the lower left side of the rear of the printer. Compare the controller board to the same part from one printer to another.
Service Manual
Page 369
...cable, so that cooling fans run through their rated life. l Overdue maintenance is correct for the printer installed. Use the HP Color LaserJet 8550 MFP printer service manual to determine whether the problem is using supported media. l The customer is a print engine problem or a... problem. Empty the toner catch tray, if necessary, and identify the source of spilled or accumulated toner before troubleshooting. For HP Color LaserJet 8550 MFP printers, compare printed pages to copied pages to troubleshoot copy module and document feeder problems. l The printer driver is performed ...
...cable, so that cooling fans run through their rated life. l Overdue maintenance is correct for the printer installed. Use the HP Color LaserJet 8550 MFP printer service manual to determine whether the problem is using supported media. l The customer is a print engine problem or a... problem. Empty the toner catch tray, if necessary, and identify the source of spilled or accumulated toner before troubleshooting. For HP Color LaserJet 8550 MFP printers, compare printed pages to copied pages to troubleshoot copy module and document feeder problems. l The printer driver is performed ...
Service Manual
Page 418
...the memory is also a service information code for duplex registration. 10 HP JetSend (8550 models only)-lists HP JetSend addresses. 416 Chapter 7 - Troubleshooting EN For HP Color LaserJet 8550 printer models (except for the MFP model), estimates of the amount of toner remaining in each input ..., including media jams, service errors, and other printer actions. 8 Color adjust-lists color adjustment halftone settings and the number of pages since the last manual color adjustment. 9 Duplex registration (8550 models only)-lists the x- Interpreting a configuration page The numbers below...
...the memory is also a service information code for duplex registration. 10 HP JetSend (8550 models only)-lists HP JetSend addresses. 416 Chapter 7 - Troubleshooting EN For HP Color LaserJet 8550 printer models (except for the MFP model), estimates of the amount of toner remaining in each input ..., including media jams, service errors, and other printer actions. 8 Color adjust-lists color adjustment halftone settings and the number of pages since the last manual color adjustment. 9 Duplex registration (8550 models only)-lists the x- Interpreting a configuration page The numbers below...
