Chapter 5 Troubleshooting
Rev. A
5-
5.2 Unit Level Troubleshooting
When a problem occurs, you can identify the defective unit according to the symptoms exhibited.
The table below lists the symptoms of certain problems. Once the problem is identified, refer to the
flowchart that corresponds to the problem.
Symptom Problem Flowchart No.
Printer does not operate at
power on
•¡LEDs do not light up.
•¡Printer mechanism does not operate.
Section 5.2.1
Error is detected
•¡Error is indicated by LED indication.
Section 5.2.2
Failure occurs during printing
•¡Printing is not performed.
•¡Abnormal printing(missing dot, etc.)
•¡Print quality is poor
Section 5.2.3
Printer does not feed the
paper
correctly
•¡No paper is fed.
•¡Paper feed is irregular.
•¡Paper jam occurs.
Section 5.2.4
Control panel operation is
abnormal
•¡No response to button access.
Section 5.2.5
Table 5-4. Symptom and Problem
