Panasonic KX-F900 Service Manual page 23

KX-F900 I
3-5. ADF (Auto document feed) SECTION
(1) No document feed
In document setting, confirm
that beep tone or not.
NO
I leaning 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)
Check the separation
spring is distorting.
Check the sensor
lever movement.
,_ oK
Check the sensor
and digital board.
(pages 54 and 77)
OK _ END
__ Check the Motor and J
connector.
NO
OK
OK
END
END
_ eplace the sen- ]
sor lever.
Replace the defec- tive parts.
_ OK? _ Replace the motor
and connector.
Check the gear.
_ Replace the gear.
YES
I Repair.
___ s the phase signal from
pins 73-77 of ICl out-
put?
NO _L
ls the solder at pins 73-
77 of IC1 OK?
I YES
l Replace IC7.
ls the voltage at emitter
of Q1 +24 V?
I YES
I I Isthev°ltageatc°llect°r L --_ofQ1+24V?
No
J Is the voltage at pin 11 of J
IC7 less than 2V? [ N----O---
,_ YES
[ Replace Q1. _1
___ Check power supply
unit section. (page 72)
NO
YES
Replace IC7.
/, _ , I aeplaoe
/ END II m°t°r I
OK? I
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