Panasonic MC-CL675-ZC79 / MC-CL675-ZA76 / MC-CL673-SC79 / MC-CL673-SA76 / MC-CL671-RC79 / MC-CL671-RA76 / MC-CL671RR79 / MC-CL673SR79 Service Manual ▷ View online
5
3 Troubleshooting Guide
CONDITION
CHECKPOINT
METHOD OF INSPECTION
CAUSE / REMEDY
Motor fails to rotate
Power supply cord
Check power supply cord continu-
ity.
ity.
If there is no continuity, replace the
cord reel patition unit.
cord reel patition unit.
Fuse of P.C.B. Ass’y
(250V, 13A)
(250V, 13A)
Check fuse continuity.
If there is no continuity, replace
P.C.B. Ass’y.
P.C.B. Ass’y.
Motor continuity
Check the conduction between the
terminals of the motor.
terminals of the motor.
If there is no continuity, replace the
motor.
motor.
ON/OFF
Switch
Check continuity across switch
connections
connections
If there is no continuity, replace
P.C.B. Ass’y.
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.)
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.
P.C.B. Ass’y
Check the internal parts for any-
thing unusual. (burn-out, melt-
down, etc.)
thing unusual. (burn-out, melt-
down, etc.)
If anything unusual is found,
replace the P.C.B. Ass’y with new
one.
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.
the hose or suction inlet.
If there is any blockage, remove it.
Dust box unit
Upper filter Unit
Secondary filter
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.
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.
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).
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 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)
(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.
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.
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.
P.C.B. Ass’y.
Replace P.C.B. Ass’y.
6
4 Disassembly and Assembly Instructions
Important notice: Before replacing any components, make sure to turn OFF the vacuum cleaner.
Remove the power plug from the outlet.
4.1.
Separate the upper and lower
bodies.
bodies.
1. Remove the dust box assy from the main body.
2. Remove the filter cover from the upper body and remove
the filter unit.
3. Remove the three screws fixing the upper and lower bod-
ies.
4. Insert a flat-blade screwdriver into the gap between the
upper body and the ornamental plate unit. Move the
screwdriver in the direction of the arrow to remove the
ornamental plate unit from the three hooks on the upper
body. Remove the ornamental plate unit.
screwdriver in the direction of the arrow to remove the
ornamental plate unit from the three hooks on the upper
body. Remove the ornamental plate unit.
* Unhook the three tabs.
7
5. Remove the ornamental plate unit from the lower body.
6. Remove the screw fixing the caster unit (on the right in
the figure below) from the bottom of the lower body to
remove the lower caster support plate, caster unit.
remove the lower caster support plate, caster unit.
7. From the bottom of the lower body, remove the four
screws fixing the upper and lower bodies.
8. Lift the upper body to separate it from the lower body.
4.2.
P.C.B. assy removal
1. Remove the control shaft and switch cover unit with
spring A fitted.
8
2. Wiring treatment
* MC-CL675
* MC-CL673, CL671
3. Remove the right body packing from the lower body.
4. Remove the P.C.B. assy from the P.C.B. holder.
* When removing the P.C.B. assy, unhook it from the
tab on the P.C.B. holder by spreading the holder
frame.
Note: When removing the P.C.B. assy, do not bend it
to prevent damage and the wires from breaking.
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