Service manual

2. Abnormal Paper Feed Operation 2-1
NO
YES
YES
NO
NO
NO
YES
END
Continued from
flowchart 2.
When
paper is loaded,
is it ejected
automatically?
Is
cut-sheet
paper loaded
correctly, but continuous
paper not loaded
at all ?
Is CN7
connected
correctly ?
Connect CN7
correctly.
Is the
problem
corrected ?
Connect CN12 or
CN16 correctly.
connected
correctly ?
or CN16
Is
the FFC
cable OK?
NO
Replace the cable
YES
YES
END
Is the
problem
corrected ?
Dose
the PWsensor
work correctly ?
(See Table 5-2)
Replace the cable
END
Is the
problem
corrected ?
YES
YES
YES
NO
NO
Replace the C186
MAIN baord.
END
Dose
the release
sensor operated
correctly (See
table 5-2) ?
Replace the C186
MAIN baord.
END
Is the
problem
corrected ?
END
NO
YES
Replace the
sensor.
Is the
problem
corrected ?
END
NO
YES
NO
Is CN12
YES
YES
Figure 5-4 Flowchart 2-1
LQ-2070 Service Manual Troubleshooting
Rev.A 5-7