Initial CheckInitial check items listItem No. Detail CheckSite Environment 1 The voltage of the power supply is as rated (+/-10%).2 The site is not a high temperature / humidity environment (near a water faucet, water boiler,humidifi er), and it is not in a cold place. The machine is not near a source of fi re or dust.3 The site is not subject to ammonium gas.4 The site is not exposed to direct rays of the sun. (Otherwise, provide curtains.)5 The site is well ventilated, and the floor keeps the machine level.6 The machine's power plug remains connected to the power outlet.Checking the Paper 1 The paper is of a recommended type.2 The paper is not moist. Try paper fresh out of package.Checking thePlacement of Paper1 Check the cassette and the manual feed tray to see if the paper is not in excess of a specificlevel.2 If a transparency is used, check to make sure that it is placed in the correct orientation inthe manual feed tray.Checking the Durables 1 Check the table of durables to see if any has reached the end of its life.Checking thePeriodically ReplacedParts2 Check the scheduled servicing table and the periodically replaced parts table, and replaceany part that has reached the time of replacement.Checking Each Unit/Each Function SystemItem No. Detail CheckReader 1 Check that there is no cut, dirt or any foreign particle on the scanner system parts.2 Check that the CIS/CCD unit moves smoothly and there is no dirt on the rail.3 Check that the lump light does not blink.4 Check that there is no dew condensation found on the scanningImage formation system 1 roperly installed.2 Check that there is no cut and dirt on the photosensitive drum.3 Check that the transfer roller is not worn and deformed and has noFixing system 1 e fixing film and pressure roller is not worn and deformed and has no cut/dirt.2 Check that the fixing thermistor wire is not cut.3 Check that there is electrical conductivity among thermoswitch.Pickup feed system 1 Check that there is no foreign particle such as paper dust etc.2 Check that the pickup/feed/separation roller does not accumulate the paper dust. Checkthat these rollers are not worn and deformed and have no cut/dirt.3 Check that the registration roller/paper path roller is not worn and deformed and has nocut/dirt.4 Check that the feed guide is not worn and deformed and has no cut/ dirt.5 Check that there is no edge fold/curl/wave/moisture absorption occurred on the paper.6 Check if using Canon recommended paper/transparency makes itDrive system 1 ck that the drive system does not get heavy load.2 hat the gear is not worn and not get chipped.Cassette 1 and the paper size is configured properly. Check if the symptom appears or not after re-placing the cassette with the cassette that works normally.2 Check that the cassette middle plate moves smoothly and is not deformed.3 Check that the cassette side guide plate/ trailing edge guide plate is properly set.4 Check that the cassette heater switch is ON (When the cassette heater is installed.).General 1 Check that the sensor/clutch/motor/solenoid works properly (Make sure to check the powersource and signal transmission route with the general circuit diagram.).2 Check that there is no wire wedged/screw loosened.3 Check that all the external covers are installed.4 Check that the main power switch/control panel power switch is ON.6. Troubleshooting186
