HP Color LaserJet 9500 Multifunction Printer series - Manual (Page 108)

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92 Chapter 4 – Faxing Rev. 1.0
The formatter board is faulty. Contact your HP service representative for
service.
The LAN fax is enabled. This is normal operation. When the
HP Digital Sending Software enables LAN
fax, the analog fax is disabled and the fax
menu, which is used only for the analog fax,
does not appear.
Problem Cause Solution