Overview - Epson DLQ-3000 Service Manual

5.1 Overview

This chapter describes how to solve printer's abnormal operations. Since abnormal phenomenon
varies in wade range, be sure to follow the instruction given here for proper judgments and
remedies.
The first step of the procedure consists of unit replacement. After any unit is replaced, carry out
any necessary adjustments and lubrication. ( Refer to Chapter 4 and Chapter6.) Table 5-1 lists
the measuring instruments used for troubleshooting.
Table 5-1. Measuring Instruments Necessary for Troubleshooting
Name
Oscilloscope
Multimeter
This printer, which is equipped with the self-diagnosis function, beeps when it detects an
abnormal phenomenon. Table 5-2 shows the printer status and abnormal operations indicated by
the beep sounds.
Paper out error has occurred.
Paper size error has occurred.
Incomplete changing paper path error
Eject error has occurred.
Release lever operation error has occurred.
Paper jam error has occurred.
Fatal error has occurred.
Illegal operation in SelecType
Notes) The symbols "•" and "—" represent how a beep sounds.
Rev. A
Figure 5-1. Troubleshooting Procedure
Measuring range : more than 50 MHz
Digital multimeter is more recommendable than analog
one.
Table 5-2. Printer Status and Corresponding Beeps
Printer status
"•": Sounds 100 ms with the interval of 100 ms.
"—": Sounds 500 ms with the interval of 100 ms.
Recommendable specification
Troubleshooting
Beeper sound
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5-1