Service manual

EPSON FX-890/2190 Revision B
Troubleshooting Troubleshooting Based on Symptoms 60
3.2.8 Abnormal operation of ribbon
Table 3-10. Abnormal operation of ribbon
Step Action and Question Yes No
Parts below can be the source of this error (Chapter 4 Disassembly and Assembly)
• Ribbon Cartridge
• Timing Belt
• CR Motor (p.81)
• Ribbon Drive (RD) Assembly (p.92)
• C524MAIN Board (p.74)
1
Ribbon Cartridge
Defective Ribbon Cartridge
♦Can the Ribbon Cartridge be turned by hand?
Go to Step 2
Replace the
Ribbon
Cartridge.
2
Defective Carriage
Check the operation of the Carriage and Timing
Belt.
♦Does the carriage and belt operate smoothly?
Go to Step 3
Go to 3.2.9
Abnormal
operation of
Carriage Unit
(p.61)
3
Defective Ribbon Drive Assembly
Check the operation of the Ribbon Drive Assembly.
♦Does the Ribbon Drive Assembly turn smoothly?
Go to Step 3
Replace or
lubricate the
Ribbon Drive
Assembly.
4
Main Board
Replace the Main Board with a new one.
♦Is the problem solved?
Problem
solved
Go to 3.2.11
Electrical
Noise (p.62)