Read Panasonic MC-E9001 / MC-E9003 Service Manual online
8 TROUBLE SHOOTING GUIDE
CONDITION
CHECKPOINT
METHOD OF INSPECTION
CAUSE / REMEDY
Motor fails to rotate. (no noise is
heard at all).
heard at all).
Power supply cord
Check
power
supply
cord
continuity.
If there is no continuity, replace the
power supply cord.
power supply cord.
Main fuse (250V, 12 A)
Check fuse continuity.
If there is no continuity, replace the
fuse.
fuse.
Motor continuity
Check motor continuity between
carbon brush holder tabs.
carbon brush holder tabs.
If there is no continuity, replace the
motor.
motor.
ON/OFF Switch
Check
continuity
across
switch
connections.
If there is no continuity, replace
ON/OFF Switch.
ON/OFF Switch.
Thermal cut-out
Check continuity across thermal
cut-out tabs.
cut-out tabs.
If there is no continuity, replace
thermal cut-out.
thermal cut-out.
Triac
Check if the triac is in open circuit. If it is in open circuit, replace power
control circuit.
Power control circuit
Check if the diac is in open circuit. If it is in open circuit, replace power
control circuit.
Rotary potentiometer
Check if the potentiometer is in
open circuit.
open circuit.
If it is in open circuit, replace power
control circuit.
control circuit.
Motor runs but there is no suction. Hose or Suction inlet
Check if there is any blockagein
the hose or suction inlet.
the hose or suction inlet.
If there is any blockage, remove it.
Dust bag / Central filter
Check if dust bag is full or dust
accumulated in central filter .
accumulated in central filter .
If the paper bag is full, replace it. If
the central filter is dirt , clean or
replace it.
the central filter is dirt , clean or
replace it.
Noise or vibration
Motor fan
Check dust accumulated in motor
fan (it could happen if the vacuum
cleaner has been used with a
broken dust bag or without central
filter).
fan (it could happen if the vacuum
cleaner has been used with a
broken dust bag or without central
filter).
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)
Motor does not change power
(runs always at full speed)
(runs always at full speed)
Rotary potentiometer
Check if the potentiometer is short-
circuited.
circuited.
If it is short-circuited, replace power
control circuit.
control circuit.
Power control circuit
Check if power control circuit is
short-circuited.
short-circuited.
If it is short-circuited, replace it.
Motor runs irregularly
Rotary potentiometer
Check possible bad contact of
rotary potentiometer.
rotary potentiometer.
If there is bad contact, replace
power control circuit.
power control circuit.
18
MC-E9001 / MC-E9003
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