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LX-300+/1170
Revision C
Troubleshooting
Troubleshooting
64
Table 3-3. Control Panel LED Does Not Light On.
Cause
Check Point
Y/N
Solution
Blowout of a fuse on
the power board.
Is a fuse on the power
board blew out?
YES
Check the electric circuit and
printer mechanism. If there is no
short circuit, replace the fuse.
Connector is not
connected to the
power board.
Are connectors
connected to the
power board
properly?
NO
Replace the power board.
Power switch is
defective.
Is conductivity of the
switch is OK?
YES
Replace the power board.
Power board is
defective.
Are +5VDC and
+35VDC OK when
the power is on?
NO
Replace the power board.
Power board and the
main board are not
connected properly.
Is CN8 connected
properly?
NO
Connect CN8 properly.
Main board is
defective.
-
-
Replace the main board.
Control panel harness
is not connected
properly.
Is the harness of the
control panel
connected properly?
NO
Connect the harness properly.
Control panel board
or harness is
defective.
-
-
Replace the control panel.
Table 3-4. Printer Mechanism Does Not Operate.
Cause
Check Point
Y/N
Solution
Any of CN3 to CN12
is not connected to the
main board properly.
Are all connectors
connected properly?
NO
Connect them properly.
Main board is
defective.
-
-
Replace the main board.
Printer mechanism is
defective.
-
-
Replace the printer mechanism.
Table 3-5. When Power is Applied, the Printer Becomes Fatal Error.
Cause
Check Point
Y/N
Solution
CR motor harness is
not connected
properly.
Is CR motor harness
CN10 connected
properly?
NO
Connect it properly.
CR motor is defective.
-
-
Replace the CR motor.
HP detector harness is
not connected
properly
Is HP detector
harness CN3
connected properly?
NO
Connect it properly.
HP detector is
defective.
-
-
Replace the HP detector.
Power board is
defective.
Is power voltage
normal?
NO
Replace the power board.
-
-
-
Replace the main board and printer
mechanism.
Table 3-6. Self Test Print is Abnormal.
Cause
Check Point
Y/N
Solution
Any of CN3 to CN12
is not connected to the
main board properly.
Are all connectors
connected properly?
NO
Connect them properly.
Printhead driver is
defective.
-
-
Replace the main board.
Bi-d is not correct.
Are rows aligned
properly when bi-
directional printing
is proceeded?
NO
Adjust Bi-D.
Printhead is defective.
Is there any dot
missing?
YES
Replace the printhead.
Head FFC is not
connected properly or
broken.
-
YES
Replace the head FFC.
Platen gap is not
correct.
Is printing too light /
weak?
YES
Adjust the platen gap.
Is there any dirt on
printed documents?
YES
Adjust the platen gap.
Ribbon mask is
defective.
Is there any dirt on
printed documents?
YES
Replace the ribbon mask.
Содержание LX-1170
Страница 1: ...EPSONLX 300 1170 9 pin Serial Impact Dot Matrix Printer SEDM997003 SERVICE MANUAL LX 300 LX 1170 ...
Страница 8: ...C H A P T E R 1 PRODUCTDESCRIPTION ...
Страница 44: ...C H A P T E R 2 OPERATINGPRINCIPLES ...
Страница 60: ...C H A P T E R 3 TROUBLESHOOTING ...
Страница 69: ...C H A P T E R 4 DISASSEMBLYANDASSEMBLY ...
Страница 89: ...LX 300 1170 Revision C Disassembly and Assembly Disassembly and Assembly 89 ...
Страница 90: ...C H A P T E R 5 ADJUSTMENT ...
Страница 98: ...C H A P T E R 6 MAINTENANCE ...
Страница 103: ...C H A P T E R 1 9 7 APPENDIX ...
Страница 112: ...LX 300 1170 Revision C Appendix Component Layout 112 C294 MAIN B BOARD Figure 7 3 Component Layout C294 MAIN B Board ...
Страница 114: ...LX 300 1170 Revision C Appendix Component Layout 114 C294PNL BOARD Figure 7 6 Component Layout C294PNL ...
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