Epson EPL-5500, Service Manual

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6.1 MAINTENANCE
The EPL-5500 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-5500 Service Manual Maintenance
Rev. B 6-1