Epson 890N Service Manual - Page 58

Printing is faulty during self-test, but carriage operation is normal - fx 890 printhead

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EPSON FX-890/2190 Revision B 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) Fuse Check the electric circuit and printer mechanism, 1 and if they are not short-circuitted, replace the fuse with a new one. Problem solved Go to Step 2 ♦Is the problem solved? Connection with connectors Make sure that all the connectors on the Main 2 Circuit Board and Power Supply Board are connected properly. Problem solved Go to Step 3 ♦Is the problem solved? Platen Gap 3 Adjust the Platen Gap. ♦Is the problem solved? Replace the Printhead. Go to Step 4 Defective CR Motor 4 Replace the CR Motor with a new one. ♦Is the problem solved? Replace the CR Motor. Go to Step 5 Table 3-7. Printing faulty during self-test, but carriage operation normal Step Action and Question Defective PF Motor 5 Replace the PF Motor with a new one. ♦Is the problem solved? Yes No Replace the PF Motor. Go to Step 6 Power Supply Board 6 Replace the Power Supply Board with a new one. ♦Is the problem solved? Replace the Power Supply Go to Step 7 Board. Main Board 7 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) Troubleshooting Troubleshooting Based on Symptoms 58

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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