Epson Stylus Color 440 Service Manual

EPSON Stylus COLOR 440, 640, and 740 Chapter 3 Troubleshooting
81
Paper feed operation is
abnormal.
Paper feed motor does not
work.
IC2 is defective.
Stylus COLOR 440:
Check the waveform at
Pins 25 and 18 of IC14.
Stylus COLOR 640:
Check the waveform at
Pins 43 and 26 of IC16.
Stylus COLOR 740:
Check the waveform at
Pin 7 of IC12 and IC13.
Replace IC2
Stylus COLOR 440, 640:
IC15 is defective.
Stylus COLOR 740:
IC12 or IC13 is
defective.
Stylus COLOR 440:
Check the output
waveform of Pins 6
through 9 of IC15.
Stylus COLOR 640:
Check the output
waveform of Pins 3,
6,18, and 21 of IC15.
Stylus COLOR 740:
Check the output
waveform of Pins 10 and
15 of IC12 and IC13.
Stylus COLOR 440, 640:
Replace IC15
Stylus COLOR 740:
Replace IC12 or IC13.
Table 3-6. Unit Repair of Main Board (continued)
Symptoms Condition Cause Check Point Solution

Epson Stylus Color 440 Specifications

General

Brand	Epson
Model	Stylus Color 440
Category	Printer
Language	English