HP 8550mfp Service Manual - Page 226
Maintenance units, Charcoal filter
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Maintenance units The user replaces the following maintenance units as part of periodic maintenance. Chapter 4 explains the maintenance procedures. Color toner cartridges Transfer charger Black toner cartridge Imaging drum Air filters Transfer drum Transfer belt Cleaning roller Charcoal filter Fuser Paper rollers The printer keeps track of use on some of its user-replaceable parts. Because maintenance unit life is tracked by the formatter board by page count, swapping maintenance units between printers might cause a misrepresentation of maintenance unit life values. 224 Chapter 6 - Removal and replacement EN
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224
Chapter 6 - Removal and replacement
EN
Maintenance units
The user replaces the following maintenance units as part of periodic
maintenance. Chapter 4 explains the maintenance procedures.
The printer keeps track of use on some of its user-replaceable parts.
Because maintenance unit life is tracked by the formatter board by
page count, swapping maintenance units between printers might
cause a misrepresentation of maintenance unit life values.
Color toner cartridges
Transfer charger
Black toner cartridge
Cleaning roller
Imaging drum
Charcoal filter
Air filters
Fuser
Transfer drum
Paper rollers
Transfer belt