b. The machine must not be in an area subject to high humidity (near a water faucet, water boiler, humidifier). The site must not be too cold or subject to dust. The

machine must not be near a source of fire.

c. The site must not be subject to ammonium gas.

d. The machine must not be exposed to the rays of the sun. As necessary, curtains must be provided.

e. The area must be well ventilated. The machine must be on a level floor.

In addition, be sure that there is a source of power that can be used by the machine at all times.

14.1.2 Checking the Paper

iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 / / / iR3530 /

a. Be sure the paper being used is of a type recommended by Canon.

b. Be sure that the paper is not moist. Try using paper fresh out of package.

14.1.3 Checking the Placement of Paper

iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 / / / iR3530 /

a. There must be paper in the cassette or the tray deposited within a specific limit.

b. If transparencies are used, be sure that they are placed in the manual feed tray in the correct orientation.

14.1.4 Checking the Durables

iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 / / / iR3530 /

Refer to the table of durables, and replace those that have reached the end of their lives.

14.1.5 Checking the Periodically Serviced Items

iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 / / / iR3530 /

Refer to the periodical servicing chart and the table of periodically replaced parts. As necessary, clean or replace parts.

14.1.6 Checking the Units and Functional Systems

iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 / / / iR3530 /

Reader Unit

- Check the scanner unit (contact sensor, white plate, copyboard glass) for scratches, dirt, and foreign matter.

- Check the contact sensor unit to see if it moves smoothly and if it is free of dirt.

- Check to see if the contact sensor is free of flickering.

- Check to see that the scanner system is free of condensation.

Process Components

- Check to see that the drum unit and the developing unit are properly fitted.

- Check to see that the photosensitive drum is free of scratches and dirt.

Transfer Components

- Check to see that the transfer roller is free of wear, scratches, dirt, and deformation.

Fixing Assembly

- Check to see if the fixing film and the pressure roller are free of wear, scratches, dirt, and deformation.

- Check to see that the fixing thermistor is free of an open circuit.

- Check to see if the thermal switch is free of disruption in its electrical continuity.

Paper Feed System

- Check to make sure that there is no paper lint or foreign matter.

- Check to make sure that there is no buildup of paper around the pickup, feed, and separation rollers. See that they are free of wear, scratches, dirt, and deformation.

- Check to make sure that the paper is free of a bent leading edge and is free of curling, waving, and excess moisture.

- Try using paper and transparency of a type recommended by Canon to see if the problem is corrected.

Mechanical

- Check to make sure that the load imposed on the drive system is not more than permitted.

- Check to make sure that the gears are free of wear and chipping.

Cassette

- Check to see that the cassette is correctly fitted. Check to see that the paper size is correctly set. Try replacing with a fault-free cassette to see if the problem is

corrected.

- Check to see that the movement of the holding plate of the cassette is normal and the plate is free of deformation.

- Check to see that the side guide plate and the rear guide plate of the cassette are fitted correctly.

- Check to see if the switch of the cassette heater is turned on (only if a cassette heater is mounted).

Service Mode

- Check to see that the various adjustment settings of the CCD are as indicated on the service label.

(COPIER>ADJUST>CCD>all items)

- Check to see if registration adjustment is executed.

(COPIER>ADJUST>FEED>ADJ>REGIST)

- Check to see if the image read start position adjustment is correct.

(COPIER>ADJUST>ADJ-XY>ADJ-X/ADJ-Y)

- Check to see if the setting of ADJUST/OPTION is identical to that indicated on the service label.