Canon LBP-1210 Service Manual page 168

CHAPTER 4
B. Initial Check
Check the following items before making a diagnosis of malfunction. If any failure is found, the
service technician is to clear problems and to give instructions to the user.
1. Installation environment
Make sure that the requirements stated below meet when installing the printer.
a. The power supply voltage is ± 10% of the rated voltage.
b. The printer is 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, areas with high temperature and high humidity (near
water faucet, kettle, humidifier), areas near open flames, and dusty place.
e. Avoid sites exposed to direct sunlight. If unavoidable, advise the customer to hang curtains.
f. The printer is installed at a well-ventilated place.
g. Make sure that the power supply plug is inserted to the printer and the outlet.
2. Paper
Confirm that:
a. Recommended paper is being used.
b. The paper is not moist.
3. Loading paper into the pick-up source
Confirm that:
a. The stack of paper loaded into the pick-up source should be within the specified capacity of
the source.
b. The paper is set in the selected pick-up source correctly.
c. The paper width alignment guide and trailing edge alignment guides are adjusted correctly
according to the paper size.
4. Installing the EP cartridge
Confirm that:
a. The EP cartridge is installed in the printer correctly.
5. Condensation
During winter, if the printer is brought from a cold place (such as a warehouse) into a warm
room, condensation will appear inside the printer, causing various problems.
For example:
a. Condensation on the optical system (such as four-faced scanning mirror, reflective mirror,
and lenses) will cause a light print image.
b. If the photosensitive drum is cold, the electrical resistance will be high, making it impossi-
ble to obtain correct contrast in prints.
If condensation appears, wipe these assemblies with dry cloth, or leave the printer powered
ON for 10 - 20 minutes.
If an EP-xx cartridge is unsealed immediately after it is brought from a cold place into a
warm room, condensation will also appear inside the cartridge. This can cause various trou-
bles. In such a case, be sure to instruct the customer that the cartridge needs to be left at
a room temperature for one to two hours before unsealing it.
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