Epson 890N - FX B/W Dot-matrix Printer User Manual

EPSON FX-890/2190 Revision B
Troubleshooting Troubleshooting Based on Symptoms 58
3.2.5 Printing is faulty during self-test, but carriage
operation is normal
Table 3-7. Printing faulty during self-test, but carriage operation normal
Step Action and Question Yes No
Parts below can be the source of this error (Chapter 4 Disassembly and Assembly)
• Fuse
• Printhead (p.77)
• CR Motor (p.81)
• PF Motor (p.83)
• C524PSB/PSE/PSH Board (p.76)
• C524MAIN Board (p.74)
1
Fuse
Check the electric circuit and printer mechanism,
and if they are not short-circuitted, replace the fuse
with a new one.
♦Is the problem solved?
Problem
solved
Go to Step 2
2
Connection with connectors
Make sure that all the connectors on the Main
Circuit Board and Power Supply Board are
connected properly.
♦Is the problem solved?
Problem
solved
Go to Step 3
3
Platen Gap
Adjust the Platen Gap.
♦Is the problem solved?
Replace the
Printhead.
Go to Step 4
4
Defective CR Motor
Replace the CR Motor with a new one.
♦Is the problem solved?
Replace the
CR Motor.
Go to Step 5
5
Defective PF Motor
Replace the PF Motor with a new one.
♦Is the problem solved?
Replace the PF
Motor.
Go to Step 6
6
Power Supply Board
Replace the Power Supply Board with a new one.
♦Is the problem solved?
Replace the
Power Supply
Board.
Go to Step 7
7
Main Board
Replace the Main Board with a new one.
♦Is the problem solved?
Replace the
Main Board.
Go to 3.2.11
Electrical
Noise (p.62)
Table 3-7. Printing faulty during self-test, but carriage operation normal
Step Action and Question Yes No

Epson 890N - FX B/W Dot-matrix Printer Specifications

General

Brand	Epson
Model	890N - FX B/W Dot-matrix Printer
Category	Printer
Language	English