Brother FAX-750 Service Manual page 153

Messages on the LCD
DOCUMENT JAM
CLEAN UP SCANNER
SCANNER ERROR
PRINTER FAULT
CHANGE CARTRIDGE
MACHINE ERROR _ _
or
MACHINE ERR _ _ _ _
PC BUSY OR FAIL
If only an alarm beep is heard without any message on the LCD when the equipment is powered
up, the ROM or RAM will be defective.
Document loading error
n
(1) The document rear sensor detects no leading edge of a
document within 10 seconds from the start of document
loading operation.
(The document rear sensor stays OFF even after the
document has been fed when the document front sensor
was ON.)
(2) The loaded document is too short.
(Since the document is shorter than the distance between
the document front and rear sensors, the document front
sensor is turned OFF before the document rear sensor is
turned ON.)
In the scanning compensation
maintenance-mode function code 05, less than fifty percent of the
white level data is faulty.
(This message may appear only in the maintenance mode.)
In the scanning compensation data list printed by the
maintenance-mode function code 05, fifty percent or more of the
white level data is faulty.
(This message may appear only in the maintenance mode.)
The thermistor in the recording head caused a heat error.
The ribbon sensor detects that no ink ribbon is loaded.
"_ _" indicates an error code.
following pages.
After connected with the host computer, the equipment has
received no response from the computer. (A communications
error has occurred.)
VI - 2
Probable Cause
data list
Refer to Section [ 2 ] on the
printed by the