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HP Color LaserJet 8550 series troubleshooting


To better help our customers - this HP Color Laserjet 8550 series troubleshooting page is simply a guide / additional information for your convenience, as you search for assistance in repairing your machine.

Although this information is provided for your convenience it is recommended, for the most part, that a technician inspects your office equipment. It is recommended to consult with a professional when ordering your printer part(s).

P/s use our SmartSearch to locate your part number.


  • Printer operation overview
    • Color theory
    • Image formation
    • Consumable detection mechanism
    • Electrical systems
    • Mechanical systems
    • Paper path
    • Printer timing
    • EPH controller board
    • Duplexer
    • 2,000-sheet input
    • Multi-bin mailbox
    • 3,000-sheet stapler/stacker

  • Product Information and service approach
    • Printer features
    • Specifications
    • Site requirements
    • Media requirements
    • Identification (model and serial numbers)
    • Printer Information
    • Parts and supplies
    • Ordering
    • Technical assistance

  • Removal and replacement procedures
    • Maintenance units
    • Doors and covers
    • Top assemblies
    • Front assemblies
    • Left assemblies
    • Right assemblies
    • Rear assemblies
    • 2,000-sheet input
    • Multi-bin mailbox
    • 3,000-sheet stapler/stacker

  • Color 8550 series Operation
    • Verifying package contents
    • Verifying the cables are installed
    • Connecting the printer to the network
    • Changing the printer control panel overlay
    • Printer control panel layout
    • Menu maps
    • Selecting the display language
    • Installing the consumables
    • Configuring input trays
    • Verifying the printer is installed correctly
    • Verifying DIMM installation
    • Duplex registration (HP Color LaserJet 8550)
    • Booklet printing
    • HP TonerGauge (HP Color LaserJet 8550)
    • Cleaning procedures
    • Printer consumables

  • Troubleshooting Process, Error messages, Jams
    • Pre-troubleshooting checklist
    • Printer message troubleshooting
    • Aids to troubleshooting
    • Paper path troubleshooting
    • Image formation troubleshooting
    • Image defects troubleshooting
    • Color balance adjustment
    • Repetitive defects troubleshooting
    • 2,000-sheet input unit troubleshooting
    • Multi-bin mailbox troubleshooting
    • 3,000-sheet stapler/stacker troubleshooting
    • Communications troubleshooting
    • Diagrams


C7096A HP HP Color LaserJet 8550 Printer Supplies
Part Number Description Price
Fusing assembly (For 120V, 60Hz operation) - Bonds the toner to the paper with heat $350.00
Fusing assembly (For 120V, 60Hz operation) - Bonds the toner to the paper with heat $350.00
Fusing assembly (For 120V, 60Hz operation) - Bonds the toner to the paper with heat $350.00
Fusing assembly (For 120V, 60Hz operation) - Bonds the toner to the paper with heat $350.00
Fusing assembly (For 240V, 50Hz operation) - Bonds the toner to the paper with heat $339.00
Fusing assembly (For 240V, 50Hz operation) - Bonds the toner to the paper with heat $510.00
16MB, 100-pin SDRAM DIMM memory module $90.00
JetDirect 610N internal print server (10Base-T and 100Base-TX) LAN interface board - Plugs into peripheral EIO slot - Has a RJ-45 connector $90.00
Flipper assembly (with cable) - Moves paper from printer to face down mailbox tray or the face up bin on top - Includes firmware chip $290.00
Fuser kit - Contains fuser assembly, six paper pickup/feed rollers and toner cloth - 110 volt $408.50
Fuser kit - Contains fuser assembly, six paper pickup/feed rollers and toner cloth - 110 volt $408.50
Fuser kit - Contains fuser assembly, six paper pickup/feed rollers and toner cloth - 220 volt $408.50
Fuser kit - Contains fuser assembly, six paper pickup/feed rollers and toner cloth - 220 volt $408.50
Transfer kit - Contains transfer belt, transfer drum, cleaning roller, charcoal filter and toner cloth $557.65
Transfer drum contact assembly - Electrical connection for image transfer belt assembly $11.67
Transfer belt assembly - Transfers image from transfer drum $232.75
Fusing Assembly (120V, 60Hz) - Bonds Toner to Paper by Heat $340.00
(Outright Refurb) Fusing Assembly (120V, 60Hz) - Bonds Toner to Paper by Heat $310.00
(Outright Refurb) Fusing Assembly (120V, 60Hz) - Bonds Toner to Paper by Heat $310.00
Fusing assembly (For 120V, 60Hz operation) - Bonds the toner to the paper with heat $340.00
(Outright Refurb) Fusing assembly (240V,50Hz) - Bonds toner to paper by heat $540.00
(Outright Refurb) Fusing assembly (240V,50Hz) - Bonds toner to paper by heat $580.00
PEP (Product Enhancement Package) kit - Contains all service parts including transfer guide and instrucions for installation of this kit $140.00
Tubeaxial fan $41.00
Transfer belt electromagnetic clutch (CL4) $30.40
Black toner cartridge switch - Detects when black cartridge is in correct position $10.00
YIELD BLACK TONER $114.00
YEILD BLACK TONER (COMPATIBLE) $78.38
YIELD CYAN TONER $177.08
YEILD CYAN TONER (COMPATIBLE) $121.74
YIELD MAGENTA TONER $177.08
YEILD MAGENTA TONER (COMPATIBLE) $121.74
YIELD YELLOW TONER $177.08
YEILD YELLOW TONER (COMPATIBLE) $121.74
DRUM (COMPATIBLE) $108.16
Transfer kit - Contains transfer belt, transfer drum, cleaning roller, charcoal filter and toner cloth $424.00
Fusing assembly kit - 120V - Includes the fusing assembly, six paper pickup/feed rollers, and toner cloth $240.80
Fusing assembly kit - 120V - Includes the fusing assembly, six paper pickup/feed rollers, and toner cloth $240.80
Fusing assembly kit - 240V - Includes the fusing assembly, six paper pickup/feed rollers, and toner cloth $390.00
Fusing assembly kit - 240V - Includes the fusing assembly, six paper pickup/feed rollers, and toner cloth $390.00
8MB simplified Chinese MROM DIMM - For LaserJet printers $90.00
Duplexer assembly - For two sided printing capability $253.60
Duplexer assembly - For two sided printing capability $253.60

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