Epson Stylus Color 440 Service Manual

EPSON Stylus COLOR 440, 640, and 740 Chapter 3 Troubleshooting
80
(Continued)
The carriage does not
operate normally.
(Continued)
The carriage motor does
not operate at all or it
produces an abnormal
noise.
Stylus COLOR 440, 640:
IC14 is dead.
Stylus COLOR 740:
IC11 is defective.
Stylus COLOR 440:
Check the waveform at Pins
6 through 9 of IC14.
Stylus COLOR 640:
Check the waveform at Pins
3, 6, 18, and 21of IC14.
Stylus COLOR 740:
Check the waveform at Pins
6 through 9 of IC11.
Stylus COLOR 440, 640:
Replace IC14.
Stylus COLOR 740:
Replace IC11.
Printing is abnormal. The printer does not print. The trapezoidal waveform
is not being generated.
Stylus COLOR 440:
Check the trapezoidal waveform at the base of Q7 or Q9 on
the C206 Main-B or C255 Main board.
Stylus COLOR 640:
Check the trapezoidal waveform at the base of Q7 or Q9 on
the C256 Main board.
Stylus COLOR 740:
Check the trapezoidal waveform at the base of Q2 or Q3 on
the C257 Main board.
Stylus COLOR 440:
Replace IC6, Q7, or Q9.
Stylus COLOR 640:
Replace IC7, Q7, or Q9.
Stylus COLOR 740:
Replace IC14, Q2, or Q3.
IC2 is defective.
Stylus COLOR 440, 640:
Check the clock signal for
the trapezoidal waveform
at Pin 80 of IC2.
Stylus COLOR 740:
Check the clock signal for
the trapezoidal waveform
at Pin 174 of IC2.
Replace IC2.
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