Brother FAX-921, MFC-970MC, FAX-931 service manual

Error Code		Error factor
(Hex.)
( 82xx	Although recording paper has been fed by 150 mm after the start of recording, the
	paper-edge sensor is still OFF. )
( 8303	Although recording paper has been fed by 360 mm after the start of recording, the
	paper-edge sensor is still ON. )
( 8406	Although the trailing edge of recording paper has passed out of the platen and further
	fed for 100 mm, the paper ejection sensor is still ON. )
( 8407	Within 10 mm of paper feeding from when the paper ejection sensor went OFF, the
	sensor has come ON again.
( 840C	The paper ejection sensor is ON when you turn the power on or after you open and
	close the recording paper cover. If the paper-edge sensor is also ON, error code
	880B appears.
( 8809	Before the start of paper feeding, the paper-edge sensor is already ON. )
( 880A	Although recording paper has been fed by 50 mm after the start of recording, the
	paper ejection sensor is still OFF. )
( 880B	The paper-edge sensor is ON when you turn the power on or after you open and close
	the recording paper cover. If the paper ejection sensor is also ON, this error code
	appears. )
( A301	Even if a document is set, the document front sensor is OFF. )
( A302	Although a document has passed through the document front sensor, the document
	rear sensor is still OFF. )
( A303	When the document ejection operation has started, the document front sensor
	remains OFF. )
( A304	When the document ejection operation has started, the document rear sensor
	remains OFF. )
( A305	Although the CIS scanner area setting operation has been completed [Function code
	55 in the maintenance mode], the document front sensor remains OFF. )
( A306	Although the CIS scanner area setting operation has been completed [Function code
	55 in the maintenance mode], the document rear sensor remains OFF. )
( A307	In document scanning, the document rear sensor remains ON although the document
	has been fed by the specified amount after the document front sensor went OFF. )
( A308	In document ejecting caused by any of the following, the document rear sensor
	remains ON although the document has been fed by the specified amount after the
	document front sensor went OFF:
	-	Depression of the STOP key in midway of scanning.
	-	Illegal copying (Copying a document longer than the recording paper or making an
		enlargement copy larger than the recording paper).
	-	Recovery operation from the error state (e.g., "DOCUMENT JAM" and "CHECK
		PAPER" error.)

NOTE: Four-digit error codes listed above are preceded by MACHINE ERR instead of MACHINE ERROR.

Error codes in parentheses do not appear in the "MACHINE ERR _ _ _ _," since those errors are displayed as messages described in "[ 1 ] Error messages on the LCD." You can display those error codes in the maintenance mode (Function code 82). If an equipment error occurs during communications, they appear in the communications error lists.

VI - 4