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6.1.1.2 Replacement of Consumables
This printer uses a consumable photoconductor unit and toner cartridge. The life of photoconductor
unit is 20,000 pages and the toner cartridge life is 3,000 pages, when printing on A4- or letter-size
pages with a 5% print ratio.
If printed images become faint, remove the toner cartridge and gently shake it. This will distribute
the toner and may make the images darker. If the image is still too light, replace the toner cartridge
cartridge.
If the printed image remains faint after you have replaced the toner cartridge, change the photo-
conductor unit.
6.1.2 Service Maintenance
This section describes the periodic service maintenance and the cleaning required.
6.1.2.1 Periodic Service Maintenance
The following units need service maintenance periodically, because they are subject to functional
deterioration as the total number of printed pages increases, resulting in bad print quality.
Table 6-1. Periodic Service Maintenance
Unit Service Interval
Image transfer unit Approx. 50,000 pages
Fusing unit Approx. 50,000 pages
The service interval listed above is only a reference value. You do not need to perform service
maintenance exactly at this time.
6.1.2.2 Cleaning
Some parts of this printer require regular cleaning. Clean each part using the specified method and
tools. (Refer to Chapter 3 for disassembly procedures.)
Table 6-2. Cleaning Parts and Procedures
Parts Name Cleaning Procedure
Paper take-up roller Wipe the surface with a dry soft cloth.
Upper fusing roller (in fusing unit) Dip a soft cloth in silicon oil and wipe the dust off.
Lower fusing roller (in fusing unit)
Thermistor (in fusing unit) Dip a soft cloth in denatured alcohol and wipe the
dust off.
Paper separator and rollers (in fusing unit)
Maintenance EPL-5500 Service Manual
6-2 Rev. B