Lexmark X500n Service Manual - Page 203
MFP circuit board locations, Modem/Fax board
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MFP circuit board locations Erase lamp 7100-XXX HVPS System/RIP board Modem/fax board LVPS Engine controller board Name Function Engine controller board Controls the following MFP processes Fuser temperature control Laser output control Toner empty sensing control Error processing control interface control System/RIP Board Controls flatbed and ADF functionality Host connectivity Controls flatbed and ADF functionality Operator panel indication Modem/Fax board Controls fax transmission and reception. Erase lamp Discharges OPC belt located in the photodeveloper cartridge. Low voltage power supply (LVPS) Provides power to control the MFP. High voltage power supply (HVPS) Provides power necessary for the printing process. Locations and connectors 5-5