Panasonic KX-F680BX - ADF (Auto Document Feed) SECTION

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TROUBLESHOOTING GUIDE
KX-F680BX/KX-F2681BX
3-5. ADF (Auto document feed) SECTION
(1) No document feed
In document setting, confirm
that beep tone or not.
Check the separation
spring is distorting.
Check the sensor
lever movement.
Replace the sen-
sor lever.
Replace the defec-
tive parts.
Replace the motor
and connector.
Replace the gear.
Replace IC7.
Replace
motor
Check power supply
unit section. (page 76)
Check the sensor
and digital board.
(pages 54 and 81)
Check the gear.
Is the voltage at emitter
of Q1 +24 V?
Is the voltage at collector
of Q1 +24 V?
Is the voltage at pin 11 of
IC7 less than 2V?
Replace Q1.
Check the Motor and
connector.
Is the phase signal from
pins 73-77 of IC1 out-
put?
Is the solder at pins 73-
77 of IC1 OK?
Replace IC7.
OK?
OK?
OK?
OK?
OK?
OK?
OK?
OK?
YES
END
YES
YES
NO
NO
NG
END
NO
NG
YES
NO
YES
NO
YES
NO
Cleaning of separation roller.
( page 109 )
Does the separation roller
rotate?
Check the separation spring
and pad?
Replace the separation
roller unit.
Replace the operation cover
unit.
To digital board
section. (page 54)
Repair.
NO
NO
NG
NG
END
END
YES
NG
NG
OK
NO
YES
YES
YES
YES
NG
OK
OK
NG
END
OK