Epson 2070 Service Manual - Page 127

Abnormal CR Operation, Flowchart1

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LQ-2070 Service Manual 1. Abnormal CR Operation START Troubleshooting When the printer NO was powerd on, dose the CR motor rotate ? YES Dose the CR motor NO stop during or after initilization ? YES When you move the CR manually wih the NO power off, dose it move freely ? YES Is the Connector NO CN 11 connected correctly ? NO Check the resistance of the motor coils. See Table 5-3. YES Is it NO OK? Replace the C186 MAIN Board. Replace the CR motor Is the platen gap NO adjusted properly ? END Adjust the Platen Gap properly Refer the Chapter 4. YES Replace the oil pad mounted on the CR assembly. Clean the CR shaft, and lubricate the oil pad and the surface of the CRshaft. NO Is the YES problem corrected ? Is the NO Is CN4 connected correctly ? Connect the CN4 correctly. END YES resistance for NO the CR motor correct ? See table 5-3. YES Is the NO problem YES corrected? NO YES Dose the NO HP sensor work correctly ? See Table 5-2. Replace the HP Sensor to new one. YES NO Is the YES NpOroblem corrected ? END Replace the C186 MAIN board. Connect the CN 11 correctly Is the trouble removed ? YES END Replace the CR motor. Is the problem corrected ? YES END Figure 5-2 Flowchart1 Rev.A 5-5

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1. Abnormal CR Operation
START
When the printer
NO
YES
Is the Connector
CN 11 connected
correctly ?
NO
Connect the
CN 11
correctly
NO
YES
Connect the CN4
correctly.
NO
YES
NO
YES
NO
Adjust the Platen Gap properly
Refer the Chapter 4.
YES
YES
Replace the HP
Sensor to new one.
NO
NO
YES
NO
NO
NO
YES
YES
was powerd on, dose the
CR motor rotate ?
Is the trouble
removed ?
END
Dose
the CR motor
stop during or after
initilization ?
Check the resistance of
the motor coils.
See Table 5-3.
NO
Is it
OK?
Replace the
C186 MAIN
Board.
Replace the
CR motor
END
When
you move the
CR manually wih the
power off, dose it
move freely ?
Is the
platen gap
adjusted
properly ?
Is the
problem corrected ?
YES
Is CN4
connected
correctly ?
END
Dose the
HP sensor work
correctly ? See
Table 5-2.
Is the
problem
corrected?
Is the
problem
corrected ?
END
NO
Is the
resistance for
the CR motor correct ?
See table 5-3.
Replace the C186
MAIN board.
Replace the
CR motor.
Is the
problem
corrected ?
END
YES
Replace the oil pad mounted on
the CR assembly. Clean the CR
shaft, and lubricate the oil pad
and the surface of the CRshaft.
NO
YES
YES
NO
YES
Figure 5-2 Flowchart1
LQ-2070 Service Manual
Troubleshooting
Rev.A
5-5