Canon imageRUNNER 2520 Series, Руководство по обслуживанию, Страница: 196 / 402

Initial Check
Initial check items list
Item No. Detail Check
Site 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 the
Placement of Paper 1 Check the cassette and the manual feed tray to see if the paper is not in excess of a specific
level.
2 If a transparency is used, check to make sure that it is placed in the correct orientation in
the manual feed tray.
Checking the Durables 1 Check the table of durables to see if any has reached the end of its life.
Checking the
Periodically Replaced
Parts 2 Check the scheduled servicing table and the periodically replaced parts table, and replace
any part that has reached the time of replacement.
Checking Each Unit/Each Function System
Item No. Detail Check
Reader 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 scanning
Image 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 no
Fixing 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. Check
that 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 no
cut/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 it
Drive 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 power
source 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. Troubleshooting
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