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3-5. ADF (Auto document feed) SECTION
(1) No document feed
In document setting, confirm
that beep tone or not.
OK?
YES
Cleaning of separation roller.
( page120 )
Does the separation roller
rotate?
YES
Check the separation spring
and pad?
YES
Replace the separation
roller unit.
YES
Replace the operation cover
unit.
To digital board
section. (page 54)
NO
Repair.
Check the separation
NO
spring is distorting.
OK?
NG
NO
Check the Motor and
connector.
NO
OK?
NG
NO
OK?
NG
Is the phase signal from
pins 73-77 of IC1 out-
put?
Is the solder at pins 73-
77 of IC1 OK?
YES
Replace IC7.
YES
END
NG
Check the sensor
lever movement.
OK
Check the sensor
and digital board.
(pages 54 and 77)
OK
END
OK?
Check the gear.
OK
END
OK?
OK
END
Is the voltage at emitter
of Q1 +24 V?
YES
Is the voltage at collector
of Q1 +24 V?
NO
Is the voltage at pin 11 of
IC7 less than 2V?
YES
Replace Q1.
| 23 |
KX-F910BX
Replace the sen-
NG
sor lever.
NG
Replace the defec-
tive parts.
NG
Replace the motor
and connector.
YES
NG
Replace the gear.
YES
Check power supply
unit section. (page 72)
Replace IC7.
NO
OK?
YES
Replace
NO
END
motor
NO
OK?
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