·Horizontal white streaks in black header
(1) Clean the BJ FAX cartridge five times. Perform a visual check to see whether ink is being properly ejected.
(2) Remove the BJ FAXcartridge and then replace it.
(3) Replace the BJ FAX cartridge.
(4) Check the connection between the carriage ribbon cable and the SCNT board (J251).
(5) Replace the SCNT board.
2.3.3 Scanning failure
· Scanning failure (judgement criterion: reception is OK but copy fails)
Document slips on the rollers (evaluation level: visual check. Copy image elongated.)
(1) Clean the document feed rollers.
(2) Replace the rollers.
Document is not properly separated (evaluation level: check on actual machine.)
(1) Check that the paper feed motor is driving all rollers. (Check for any broken gears or foreign bodies.)
(2) Clean the document feed rollers and the document separation rollers.
(3) Replace the ASF unit.
Scanning assembly sensor broken (judgement criterion: document is not detected
when set or when being fed.)
(1) Perform a copy operation and check for any faulty sensors.
(2) Check the connections between the sensors and the SCNT board.
(3) Replace the SCNT board.
· Abnormality in scanned image (evaluation level: Check copy image for defects.)
Nothing printed
(1) Check the connection between the contact sensor and the SCNT board (J201).
(2) Clean the white reference.
(3) Replace the contact sensor.
(4) Replace the SCNT board.
Vertical streaks in image
(1) Clean the contact sensor’s scanning glass.
(2) Clean the white reference.
(3) Check the connection between the contact sensor and the SCNT board (J201).
(4) Replace the contact sensor.
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