Identify Problems From Symptoms - Epson LX-300 Service Manual

EPSON LX-300+
Release Lever Error
This error will be indicated when wrong release lever operation is
performed. For example, if you change the release lever setting when
the printer already starts feeding paper, this error will be generated.
Solution
Reset the release lever.
Fatal Error
This error will be indicated when;
-carriage error is occurred
-input voltage is abnormal
-hardware problem is occurred
Solution
If it is carriage error, check if there is no obstacles for carriage to
move.
If it is input voltage problem, check power supply voltage.
If it is hardware problem, check machine and electric circuit.
Troubleshooting

3.2.3 Identify Problems From Symptoms

This section procedure to identify the problems from the abnormal
symptoms. Basically unit repair or replacement should be performed, but if
necessary parts level replacement should be performed.
Find your symptom in the table below and check the corresponding table.
Table 3-2. Symptoms and Solutions
Symptom
When power is
applied, the printer
does not operate.
When power is
applied, the printer
becomes fatal error.
Self-test print is
abnormal.
Paper feed is
abnormal.
Control panel and
switches do not
operate properly.
Printing operation is
abnormal when it is
on-line.
Troubleshooting
Problems
Control panel LED does not
operate at all.
Printer mechanism does not
operate at all.
• Control panel indicates fatal
error.
• The printer indicates error after
initialization.
• Platen gap is not correct.
• Printhead and ribbon mask is
abnormal or their life are over.
• Vertical direction printing
quality is abnormal.
• Paper feed operation is not
performed.
• Paper switching is abnormal.
• Line feed is not equal.
• Skew is generated.
• LED indication is abnormal.
• Cannot input from switches.
• Self-test is normal, but the
printing from host computer is
abnormal.
Revision A
Check Table
Table 3- 3 on page 59
Table 3- 4 on page 59
Table 3- 5 on page 59
Table 3- 6 on page 60
Table 3- 7 on page 60
Table 3- 8 on page 60
Table 3- 9 on page 61
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