Canon MX700 Service Manual
Also see for PIXMA MX700 Series: Supplementary guideBrochure & specsCleaning guideNetwork Setup GuideQuick start guide
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2-6. Troubleshooting by SymptomSymptom SolutionFaulty operation The power does not turn on.The power turns off immediately afterpower-on.- Confirm the connection of- the power cord, and- between the logic board and the power supply unit.- Replace the- power supply unit, or- logic board.A strange noise occurs. - Remove foreign material.- Attach a removed part if any.- Check the operation of the moving parts (such as purgeunit, carriage unit, and paper feeding mechanism)- Replace a faulty part, if any.Nothing is displayed on the LCD. - Confirm the connection between the operation panel, theLCD unit, and the logic board.- Replace the- LCD unit, or- logic board.A portion of the LCD is not displayed. - Perform the button and LCD test in the service mode, andconfirm that the LCD is displayed without any segmentsmissing or flickering.- Confirm the connection between the operation panel, theLCD unit, and the logic board.- Replace the- LCD unit, or- logic board.Paper feed problems (multi-feeding,skewed feeding, no feeding).- Examine the inside to confirm that no parts are damaged,and the rollers are clean.- Remove foreign material.- Adjust the paper guide properly.- Set the paper properly.- Confirm the following:- selected paper source- attachment of the rear cover (for feeding from the fronttray)- connection of each harness and the logic board- Replace the- sheet feeder unit,- ASF cover unit,- bottom case unit (for paper feeding from the fronttray), or- logic board.Carriage movement problems (contactto other parts, strange noise).- Confirm that the carriage timing slit strip film is free fromdamage or grease.- Clean the carriage timing slit strip film (with ethanol andlint-free paper).- Remove foreign material.- Replace the- carriage timing slit strip film, or- carriage unit.Faulty scanning (no scanning, strangenoise).- Confirm the connection between the scanning unit andthe logic board.- Replace the- scanning unit, or- logic board.No paper feeding from the ADF (no - Confirm the connection12 / 41 |
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