Checking Each Unit/Each Function System - Canon iR3245 Series Service Manual

Chapter 15

15.1.6 Checking Each Unit/Each Function System

iR3225 / iR3225N / iR3235 / iR3235N / iR3245 / iR3245N
Reader
- Check that there is no cut, dirt or any foreign particle on the scanner system parts.
- Check that the CCD unit moves smoothly and there is no dirt on the rail.
- Check that the lump light does not blink.
- Check that there is no dew condensation found on the scanning system parts.
Image formation system
- Check that the drum unit and developing assembly are properly installed.
- Check that there is no cut and dirt on the photosensitive drum.
- Check that the transfer roller is not worn and deformed and has no cut/dirt.
Fixing system
- Check that the fixing film and pressure roller is not worn and deformed and has no cut/dirt.
- Check that the fixing thermistor wire is not cut.
- Check that there is electrical conductivity among thermoswitch.
Pickup feed system
- Check that there is no foreign particle such as paper dust etc.
- 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.
- Check that the registration roller/paper path roller is not worn and deformed and has no cut/dirt.
- Check that the feed guide is not worn and deformed and has no cut/dirt.
- Check that there is no edge fold/curl/wave/moisture absorption occurred on the paper.
- Check if using Canon recommended paper/transparency makes it better or not.
Drive system
- Check that the drive system does not get heavy load.
- Check that the gear is not worn and not get chipped.
- Cassette
- Check that the cassette is installed properly and the paper size is configured properly. Check if the symptom appears or not after replacing the cassette with the
cassette that works normally.
- Check that the cassette middle plate moves smoothly and is not deformed.
- Check that the cassette side guide plate/ trailing edge guide plate is properly set.
- Check that the cassette heater switch is ON (When the cassette heater is installed.).
General
- 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.).
- Check that the leakage breaker/circuit breaker works normally.
- Check that there is no wire wedged/screw loosened.
- Check that all the external covers are installed.
- Check that the main power switch/control panel power switch is ON.
- Check that the wiring of power cable/signal cable to each option is properly installed.
- Check that the cover switch works normally.
- Check that the fuse on each PCB does not burn out.
- Check that there is no error in customer's usage method.
15.1.7 Others
iR3225 / iR3225N / iR3235 / iR3235N / iR3245 / iR3245N
If moving the machine from the cold place such as storage etc to a warm place abruptly, dew condensation is generated inside machine and it may cause various
troubles.
a. E100 occurs due to dew condensation on BD sensor.
b. Low image density in the vertical scanning direction due to dew condensation on the dust-proof glass.
c. Low image density due to dew condensation on the reader CCD and copyboard glass.
d. Paper feed failure due to dew condensation on the pickup, feed guide.
If the symptom d appears, wipe the pickup/feed unit with dry cloth.
Moreover, if storing the toner container/developing assembly/drum unit in the cold place and unpacking them abruptly in warm place, dew condensation may be
generated. To prevent dew condensation, place them in warm place sufficiently (for 1 to 2 hours) before unpacking.
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