Epson FX-870/1170 - Manual (Page 152)

Principles of Operation
Table 6-8. Repairing the C094 MAIN Board Assembly (Continued)
Problem Symptom Cause Checkpoint Solution
Paper feed The printer is Check the input signal (pin 2) and the output Replace
abnormal. does not feed defective. waveform (pin 3).
the paper at
all or the
paper feed is
irregular.
Incorrect Data is
Either IC4 or
printing of corrupted
is
data sent when the
defective.
from the p a r a l l e l
host interface is
computer. used.
Replace
or
Epson FX-87011170
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