Panasonic MC-CL675-ZC79, Service Manual

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5
3 Troubleshooting Guide
CONDITION CHECKPOINT METHOD OF INSPECTION CAUSE / REMEDY
Motor fails to rotate Power supply cord Check power supply cord continu-
ity. If there is no continuity, replace the
cord reel patition unit.
Fuse of P.C.B. Ass’y
(250V, 13A) Check fuse continuity. If there is no continuity, replace
P.C.B. Ass’y.
Motor continuity Check the conduction between the
terminals of the motor. If there is no continuity, replace the
motor.
ON/OFF Switch Check continuity across switch
connections If there is no continuity, replace
P.C.B. Ass’y.
Triac (Inside of P.C.B.) Check if there is any problem in the
triac.
(Please refer to how to check the
triac.) If it has any problem, replace the
P.C.B. Ass’y.
P.C.B. Ass’y Check the internal parts for any-
thing unusual. (burn-out, melt-
down, etc.) If anything unusual is found,
replace the P.C.B. Ass’y with new
one.
Motor runs but there is no suction Hose or Suction inlet Check if there is any blockage in
the hose or suction inlet. If there is any blockage, remove it.
Dust box unit
Upper filter Unit
Secondary filter Check whether or not the dust box
unit is full of dust or dust is clogged
in the upper filter unit or secondary
filter. If the dust box unit is full of dust,
then throw away the dust.
If dust is clogged in the upper filter
unit or secondary filter, then throw
away the dust and clean or replace
the upper filter unit or secondary fil-
ter.
Noise or vibration Motor fan Check dust accumulated in motor
fan (it could happen if the vacuum
cleaner has been used without cen-
tral filter). If there is accumulated dust in the
motor fan, replace the motor and
check filter condition. (never try to
dismantle the motor fan)
Motor does not change power
(runs always at full speed) P.C.B. Ass’y Examine the triac in the P.C.B.
Ass'y and check whether or not T1
and T2 are short-circuited. If they are short-circuited, then
replace the P.C.B. Ass'y.
Motor runs irregularly P.C.B. Ass’y Check possible bad contact of
P.C.B. Ass’y. Replace P.C.B. Ass’y.