Canon CiRC2550, Руководство по обслуживанию, Страница: 492 / 774

Chapter 15
15-1
15.1 Making lnitial Checks
15.1.1 Checking the Site Environment
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Color iR C3380G / Color iR C2880G / Color iR C3380i / Color iR C3380 / Color iR C2880i / Color iR C2880 / iR C3480 / iR C3480i / iR C3080i / iR C2550
- The voltage of the source of power must be as indicated (+/-10%).
- The temperature and humidity of the site must be as indicated, and the site must be away from a water faucet, water boiler, humidifier; moreover, the machine
must not be near a fire or subjected to dust.
- The site must be free of ammonium gas.
- The machine must not be subjected to the direct rays of the sun. As necessary, curtains must be furnished.
- The site must be well ventilated, and its floor must keep the machine level.
- The machine must remain connected to the wall outlet at all times.
15.1.2 Checking the Paper
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Color iR C3380G / Color iR C2880G / Color iR C3380i / Color iR C3380 / Color iR C2880i / Color iR C2880 / iR C3480 / iR C3480i / iR C3080i / iR C2550
- Check if the paper is dry. If moist, try paper fresh out of package.
- Check that the amount of paper placed in the cassette and the manual feed tray is as indicated.
- If transparencies are used, check to see if they are placed in the correct orientation.
15.1.3 Checking the Durables
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Color iR C3380G / Color iR C2880G / Color iR C3380i / Color iR C3380 / Color iR C2880i / Color iR C2880 / iR C3480 / iR C3480i / iR C3080i / iR C2550
- Check the Durables Table, and replace those parts that have reached the end of the indicated lifetimes.
15.1.4 Checking the Units and Functional Blocks
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Color iR C3380G / Color iR C2880G / Color iR C3380i / Color iR C3380 / Color iR C2880i / Color iR C2880 / iR C3480 / iR C3480i / iR C3080i / iR C2550
1. Reader Unit
- Check the optical system (contact sensor, white plate, copyboard glass, reading glass) for a scar, dirt, and foreign matter.
- Check the contact sensor unit to see if it moves smoothly. Check its rail for dirt.
- Check the contact sensor for flickering.
- Check the scanner for condensation.
2. Process
- Check the drum unit to see if it is attached properly.
- Check the photosensitive drum for a scar and dirt.
- Check the patch image read sensor window for dirt.
3. Transfer
- Check the secondary transfer outside roller for wear, scar, dirt, and deformation.
- Check the blade of the cleaning unit for a tear, warping, deformation, and stray toner.
4. Fixing
- Check the fixing film/ pressure roller for wear, scar, dirt, and deformation.
- Check the fixing thermistor for an open circuit.
- Check the thermal switch for electrical continuity.
5. Paper Movement
- Check if there is foreign matter such as paper lint.
- Check the pickup/feed/separation roller for a buildup of paper powder, wear, scar, dirt, and deformation.
- Check the registration roller (middle, outside)/paper path roller for wear, scar, dirt, and deformation.
- Check the feed guide for wear, scar, dirt, and deformation.
- Check the paper for a bent leading edge, curling, waving, and moisture.
- As necessary, try transparencies of a type recommended by Canon to see if the problem, if any, is corrected.
6. Machine
- Check if an excess load is imposed on the drive system.
- Check the gears for wear and chipping.
7. Cassette
- Check if the cassettes are fitted properly. Check also to see that the dial is set an appropriate paper size . As necessary, try a normal cassette if the problem, if
any, stops.
- Check the movement of the cassette holding plate is smooth. Check also to see that the holding plate is free of deformation.
- Check if the side guide plate/trailing edge plate inside the cassette are set correctly.
8. Service Mode
- Check that the various CCD adjustment values are as indicated on the service label.
(COPIER>ADJUST>CCD>all items)
- Check if registration adjustment is correct.
(COPIER>ADJUST>FEED-ADJ>REGIST)
- Check if the machine inside temperature/humidity is the correct reading.
(COPIER>DISPLAY>ANALOG>TEMP/ABS-HUM)
- Check the image read position adjustment is correct.
(COPIER>ADJUST>ADJ-XY>ADJ-X/ADJ-Y)
- Check if the value for ADJUST/OPTION is as indicated on the service label.
- Check if error initialization has been executed.
(COPIER>FUNCTION>CLEAR>ERR)
9. General
- Check the power plug is connected properly.
- Check there is the rated AC voltage at the power outlet.
- Check the sensors, clutches, motors, and solenoids operate normally. Check the connectors for poor contact.
(Be sure to check with the General Timing Chart for reference to power/signal routes.)
- Check the leakage breaker/circuit breaker operates normally.