Canon LBP 2460 - B/W Laser Printer, Service Manual

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CHAPTER 4
4 - 18
IV. INITIAL CHECK
1. Installation environment
Make sure that the printer conforms to the following environment standards:
a. The power supply voltage is ±10% of the rated voltage.
b. The printer is securely installed on a level surface.
c. The room temperature is kept between 10°C and 32.5°C, and the relative humidity, between
20% and 80%.
d. Avoid sites generating ammonia gas, high temperature or high humidity (near water faucets,
kettles, humidifiers), cold spaces, near open flames, and dusty areas.
e. Avoid sites exposed to direct sunlight. If unavoidable, advise the hanging of curtains.
f.
A well-ventilated place.
2. Print paper checks
a. Check that the recommended paper for this printer is being used.
b. Check that the paper is not damp.
Make a trial print with paper from a newly opened package, and check the results.
3. EP-W cartridges
If blank spots appear on an output image, there is a chance that the toner is not even. Rock the
toner cartridge as shown in Chap. 1 and make a print to check that it has evened out.
4. Other
During winter, particularly when moving the printer into a warm room from a cold location such
as a warehouse, various problems can occur due to condensation in the printer if immediately
unpacked.
For example:
a. Condensation in the optical system (Six-faced mirror, mirror, lens, etc.) will result in the
output of light images.
b. The photosensitive drum is cold, so resistance of the photoconductive layer will rise. This
will lead to a loss of contrast.
If condensation appears, either wipe the parts with a dry cloth, or leave the printer running for 10
to 20 minutes.
If a packaged EP-W cartridge is opened soon after being moved from a cold room to a warm
room, condensation will appear inside the cartridge; this can cause various image defects.
In such cases, be sure to instruct the customer that it is necessary to leave the cartridge sealed
for one to two hours at room temperature to allow it to acclimatize.