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2-2 Service Manual
4036-304
Note: For generation 2 MFD controller cards, there are four pairs of LEDs. The LEDs are
viewable after the controller cage is removed from the scanner. The LED pattern shown
depicts which LEDs are illuminated in the two rows.
Error number and
description
Number
of beeps
MFD
controller
card
generation
LED pattern
(on= , off= )
Action
Error: 21 - Modem not found 2 1st Modem on the MFD
controller card is not
found. Replace the
MFD controller card.
2nd
Error: 22 - PCI Bus failure 2 1st Replace the MFD
controller card.
2nd
Error: 23 - Internal scanner
card failure
2 The 1394
communication protocol
on the MFD controller
card has failed. Replace
the MFD controller card.