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6.1 MAINTENANCE
The EPL-5500W is a page printer that uses an electrophotographic printing method. Unlike most impact or
ink-jet printers, the key components in the electrophotographic process are integrated into two expendable
units (the photoconductor unit and toner cartridge). Therefore, periodic replacement of them is essential to
ensure high-quality output. Other maintenance items are also described in this chapter, which is divided into
two sections: user maintenance (preventive maintenance) and service maintenance (repair).
6.1.1 User Maintenance
Users can achieve maximum print quality from the printer by following the procedures below:
6.1.1.1 Cleaning
This section describes the cleaning required for optimal print quality.
❒ External Cleaning
Be sure to disconnect the printer from the power outlet before cleaning it. Wipe the cover and external parts
of the printer with a damp cloth that has been soaked in a neutral cleaning solution.
❒ Internal Cleaning
Be sure the printer has been disconnected from the power supply and that the fusing unit has cooled down. If
the electrode comb of the image transfer unit is dirty, clean it with a special tool, using the following steps:
1. Pick up the electrode comb cleaner from the upper unit.
2. Wipe the electrode comb surface from end to end with the electrode comb cleaner several times.
Figure 6-1. Position of the Special Tool
Electrode Comb Cleaner
Cleaner Section
Pre-image Transfer Roller
Image Transfer Rear
Guide
Figure 6-2. Cleaning the Electrode Comb
EPL-5500W Service Manual Maintenance
Rev. A 6-1