Panasonic MC-E7305 / MC-E7305K / MC-E7303 / MC-E7303K / MC-E7302 / MC-E7301 / MC-E7301K Service Manual ▷ View online
CHECKPOINT
Power cord
Fuse (Plug for UK only)
Main fuse (250V, 12 A)
Motor continuity
ON/OFF Switch
Thermal cut-out
Triac
Power board
* Rotary potentiometer
Hose or Suction inlet,
Tubes and nozzle
Tubes and nozzle
Dust bag / Central filter
Motor fan
* Rotary potentiometer
* Power board
* Rotary potentiometer
CONDITION
Motor fails to rotate.
(no noise is heard at all).
(no noise is heard at all).
Motor runs but there is
no suction.
no suction.
Noise or vibration
Motor does not change
power (runs always at
full speed)
power (runs always at
full speed)
Motor runs irregularly
METHOD OF INSPECTION
Check power cord continuity.
Check plug fuse continuity.
Check main fuse continuity.
Check motor continuity between
carbon brush holder tabs.
carbon brush holder tabs.
Check continuity across ON/OFF
switch tabs.
switch tabs.
Check continuity across thermal
cut-out connection points.
(Assembled in motor)
cut-out connection points.
(Assembled in motor)
Check if the triac is in open circuit.
(Assembled in PCB)
(Assembled in PCB)
Check if the diac is in open circuit.
Check if the potentiometer is in
open circuit.
open circuit.
Check for any possible blockage in
the indicated parts .
the indicated parts .
Check if dust bag is full or central
filter is choked up.
filter is choked up.
Check dust accumulated in
motor fan.
motor fan.
Check possible bad contact of
power control potentiometer.
power control potentiometer.
Check if power board circuit is
short-circuited.
short-circuited.
Check possible bad contact of
power control potentiometer.
power control potentiometer.
CAUSE / REMEDY
If there is no continuity, replace
the power cord.
the power cord.
If there is no continuity, replace
the fuse.
the fuse.
If there is no continuity, replace
the main fuse.
the main fuse.
If there is no continuity, replace
the motor.
the motor.
If there is no continuity, replace
the switch.
the switch.
If there is no continuity, replace
the motor.
the motor.
If it is in open circuit, replace
power board ass’y.
power board ass’y.
If it is in open circuit, replace
power board ass’y.
power board ass’y.
If it is in open circuit, replace
power control.
power control.
If there is any blockage, remove it.
If dust bag is full, replace with a
new one. If central filter is choked
up, remove and clean it out or
replace.
new one. If central filter is choked
up, remove and clean it out or
replace.
If there is dust accumulated 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)
If there is bad contact, replace the
power control.
power control.
If it is short-circuited, replace
power board ass’y.
power board ass’y.
If there is bad contact, replace
power control.
power control.
NOTE: Parts marked with (*) only affect to model with power control.
4 TROUBLE SHOOTING GUIDE
7
MC-E7305 / MC-E7305K / MC-E7303 / MC-E7303K / MC-E7302 / MC-E7301 / MC-E7301K
Fig. 1
Dusting brush
Crevice
nozzle
Fig. 3
Roller cap
Dust cover
unit
Fig. 2
Exhaust filter
Rear cover
Fig. 4
Dust cover
unit
Fig. 5
5 REPLACEMENT OF MAIN PARTS
IMPORTANT: Before replacing any part always
DISCONNECT THE CLEANER FROM THE ELECTRICITY SUPPLY.
1. Remove the attachment crevice nozzle
and dusting brush. (Fig. 1)
5.1. Removing attachment nozzle
and rear cover
5.2 Removing dust cover unit
1. When the latch of the dust cover unit is disengaged,
remove the mounting screw (1 piece) of the left /right
roller caps and remove them. (Fig. 3)
2. Expanding the hem area of the dust cover unit left/right
ward, remove the dust cover unit from the main body.
(Fig.
4-5)
2. Remove the rear cover and exhaust filter. (Fig. 2)
8
MC-E7305 / MC-E7305K / MC-E7303 / MC-E7303K / MC-E7302 / MC-E7301 / MC-E7301K
Fig. 6
Upper body
cover
Screws
Fig. 7
Lead wire
connector
Power
board
Upper body
cover
Power
control
Fig. 8
Upper body
cover
Packing
Nut
Washer
Power
control
Fig. 9
Groove
Upper body
cover
Power
control
Fig. 10
Power
control
shaft
Knob
Mark
Power control
Knob
5.3. Removing upper body cover
1. Remove the mounting screws (4 pieces), and remove the
upper body cover. (Fig. 6)
2. Disconnect the lead wire connector of the power control
from the power board and remove upper body cover.
(Fig.
7)
5.4. Removing power control
1. Pull off the power control knob.
2. Remove the fastening nuts with hex. socket wrench and
2. Remove the fastening nuts with hex. socket wrench and
remove the power control from upper body cover. (Fig. 8)
3. < Attaching power control >
Engage the stopper of the power control into the
Engage the stopper of the power control into the
groove on the rear side of the upper body cover, and
fasten the power control with the fastening nuts. (Fig. 9)
4. < Attaching knob >
As shown in the figure, position the cut surface of the
power control shaft and push in the knob aligning with the
mark of the upper body cover. (Fig. 10)
9
MC-E7305 / MC-E7305K / MC-E7303 / MC-E7303K / MC-E7302 / MC-E7301 / MC-E7301K
Cord rewind
pedal
Switch pedal
Pedal
Spring
Fig. 12
Fig. 13
Power switch
Power switch
Fig. 14
Fig. 11
5.5. Removing cord rewind /
switch
pedals
1. Insert the minus screwdriver into the hinge area
(clearance between pedal and upper body) of the pedal
and pry off for removal. (Fig. 11)
2. When the pedals are removed, the springs are also
removed together. (Fig. 12)
5.6. Removing/replacing
power
switch
1. Using the minus screwdriver or similar, expand the upper
body’s hook which fastens the power switch. (Fig. 13)
2. Disconnect the stopper-provided faston terminal from the
switch and replace the power switch.
3. Connect the removed lead wires to the switch tabs and
reinstall in its lodging. (Fig. 14)
NOTE: Maker sure the lead wires and lower body seal
are correctly positioned to avoid pinching them
between parts.
are correctly positioned to avoid pinching them
between parts.
10
MC-E7305 / MC-E7305K / MC-E7303 / MC-E7303K / MC-E7302 / MC-E7301 / MC-E7301K
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