Specifications

REV.-B
5.2 REPAIR BY UNIT REPLACEMENT
For most problems, it is sufficient for you to determine the difficulty to the unit level. Refer to Table
5-3, identify what the problem is, then perform the checks according to the corresponding flowchart.
Table 5-3.
Svm~toms and Reference Pages
—. .
Symptom
Problem
See Page
Printer fails to operate
when
● Carriage does not move.
5-3
power is on.
c Control panel indicator lamp does not light.
Carriage operation is abnor-
. Carriage moves away from home position at power
5-4
real.
on.
● The carriage returns to the home position correctly,
but the printer then fails to enter the READY mode.
Printing is faulty during
self-
. No printing at all.
5-5
test, but carriage operation is
. Faulty printing - some of the dots are not printed.
normal.
Paper feeding is abnormal.
. No paper is fed.
5-9
●
Regular paper feed, but with variations in the separa-
tions between lines.
Control panel operation is
●
When the LF switch is activated, no paper is fed.
5-12
abnormal.
Printing of data sent by the
●
Carriage operates normally at power on, and self-test
5-13
host computer is faulty.
is executed correctly.
● Print data from the computer, however, is not printed
correctly.
The repair procedure flowcharts are represented using the following symbols:
Start
o-
Branching
Processing
v
Returning to the Start of the item
Forwarding to another
v
End
item
Decision
5-2