Unit Repair Of The Main Board - Epson Stylus Color 660 Service Manual

EPSON Stylus Color 440/640/740

3.4 Unit Repair of the Main Board

Note:
The Main board equipped with each printer is as follows:


Stylus Color 440: C206MAIN-B, C255MAIN


Stylus Color 640: C256MAIN


Stylus Color 740: C257MAIN
This section describes the problems related to the main controller
board. The table below provides various symptoms, likely causes, and
checkpoints. The check points refer to waveforms, resistance, and other
values to check to evaluate the operation of each component.
Chapter 3 Troubleshooting
Revision A
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