Epson LQ-1070 Service Manual page 104
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Also See for LQ-1070:
- User manual (158 pages) ,
- Product information manual (8 pages) ,
- Install manual (1 page)
Table of Contents
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Table 5-4. Repair of a Problem in the
I
Problem
Symptom
Self-test print-
Self-test is
not executed.
ing is
abnormal.
A particular
dot is not be-
ing printed.
'a per is not
The paper
'ed normally.
does not
feed, or the
feed pitch is
abnormal.
Data corrup-
a from the
tion occurs
when the par-
is used.
Cause
The CPU can't
Measure the voltage at Vref
measure the
voltage on
the +35V
line.
At
and the output signal at pin 46.
defective.
defective.
defective.
is defective.
5-16
BOARD ASSY., MAIN (Cont.)
Checkpoint
check the input signal at pin 101
Solution
VR 1.
(pin 1) of
Adjust
Replace IC4D.
Replace IC2A.
Replace IC2A.
Replace IC4D
or IC5D.
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