Brother International 1920CN Service Manual - Page 175
Pls Clean Drum, Machine Error Xx
UPC - 012502607137
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Messages on the LCD CLEAN UP SCANNER COOLING DOWN COVER OPEN DOCUMENT JAM MACHINE ERROR XX PLS CLEAN DRUM Probable Cause In the scanning compensation data list printed by the maintenance-mode function code 05 (refer to Chapter V, Section 3.2), less than fifty percent of the white level data is faulty. (This message may appear only in the maintenance mode.) The controller, which monitors the internal resistance of the incasing temperature sensor (thermistor) and heater thermistor, has detected that the temperature inside the machine or the heater temperature exceeded the specified level. If either temperature exceeds the preset level, recording is no longer possible. The cover sensor detects that the front cover is not closed. n Document jam (1) The document length exceeds the limitation (400 or 90 cm) registered by firmware switch WSW16. (Refer to Chapter V, Section 3.5.) (Both the document front and rear sensors stay ON after the document has been fed by the registered length.) (2) The document rear sensor detects no trailing edge of a document after the document has been fed by 400 cm. (The document rear sensor stays ON even after the document has been fed when the document front and rear sensors were OFF and ON, respectively.) n Document loading error (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.) "XX" indicates an error code. Refer to [ 2 ] on pages VI-4 and VI-5. In either of the following cases, this message appears, prompting the user to clean the corona wire of the lasersensitive drum. - When the specified number of pages has been printed after the replacement of the laser-sensitive drum. - When the corona wire abnormally emits ions. (This happens if the corona wire becomes dirty, superimposing noise components on toner sensor signals.) VI - 2