3 unit repair of power supply board – Epson 440 User Manual
Page 88
EPSON Stylus Color 440/640/740
Revision A
Chapter 3
Troubleshooting
88
3.3 Unit Repair of Power Supply Board
Note:
The power supply board equipped with each printer is as follows:
S
tylus Color 440: C206 PSB/PSE
Stylus Color 640: C206 PSB/PSE
Stylus Color 740: C257 PSB/PSE
This section describes the problems related to the power supply board.
The table below provides various symptoms, likely causes, and
checkpoints. The checkpoints refer to waveforms, resistance, and other
values to check to evaluate the operation of each component.
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