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8
7 blinks
7 blinks
/abnormal picture
7 blinks
6 blinks
6 blinks
6 blinks
6 blinks
6 blinks
/abnormal picture
Symptom
( just for
reference )
Over 100ｋ ohm
Pulse for
Q16621-622
Q16621-622
C16753
About 2k ohm
About 3k ohm
About 6k ohm
Over 100k ohm
Over 100k ohm
Over 100k ohm
Over 100k ohm
Correct resistance value
of signal/power line
(rough standard (*1) )
C16723 /
or
IC16724(2-3 pin) / IC16725(2-3 pin)
16V_F
C16772 / C16773 /
or
IC16771(2-3 pin) / IC16501(11-16 pin) / IC16791(10-11 pin) /
Q16702
Q16702
C16725 /
or
IC16724(1-2 pin) / D16725 / IC16564(3-5 pin)
5V_F_A,
5V_F_B
C16724 /
or
IC16725(1-2 pin)
Pulse for
Q16451
Q16451
C16525 /
or
IC16521(6-7 pin), Q16551
Pulse for
Q16441
Q16441
C16522 / C16524 /
or IC16501(2-3 pin) , C16523
Pulse for
Q16401-403
Q16401-403
C16502 / C16504 /
or IC16501(6-7pin) , C16503
Signal or
Power
supply
Power
supply
Check components ( Defective components )
: Capacitor and other components connect in parallel
(*1): The value is just reference, please compare with the normal board accurately.
The defective mode of these capacitors are
not only short circuit mode,
also leak current mode (low resistance ).
Please compare to normal resistance value.
Step2. Check the Resistance Value of Capacitor
(Control Pulse Line / Power Line)
Normal
= open ,
Defective = shorted or low resistance (for example : 1k ohm )
4.7uF 25V
(F1L1E4750004)
3.2mm×2.5mm
(F1L1E4750004)
3.2mm×2.5mm
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