Troubleshooting Guide - Panasonic mc-ul592 Service Manual

TROUBLE SHOOTING GUIDE
CHECKPOINT
CONDITION
Motor fails to rotate Plug (fuse-link)
(UK, Ireland only)
(no noise is heard
at all).
Power cord.
Motor continuity.
Carbon brush is in contact
with the commutator.
ON / OFF Switch.
Hose or connector pipe.
Motor runs but
there is no suction.
HEPA filter,
Exhaust filter.
Noise or vibration. Motor fan.
Carbon brushes.
Beater bar unit
Beater bar unit (bearings)
Beater bar unit Belt.
does not rotate.
METHOD OF INSPECTION
Check fuse continuity.
Check power cord continuity.
Check continuity between motor and lead wires.
Check if there is gap between carbon brush and
commutator.
Check continuity across the switch terminals.
Check clogs in hose or connector pipe.
Check if filter are choked up.
Check dust accumulated in motor fan. (It could
happen if the v.c has been used with a filter.
Check uneven wear of carbon brushes.
Remove the Beater bar unit and check if the each
bearing support is broken or deformed.
Place the Beater bar unit on a flat surface and turn
the rotary brush to check bearing noise or distance.
Remove base plate (Floor nozzle lower unit) and
check if the belt is broken or loose.
13
CAUSE / REMEDY
If there is no continuity, replace it.
If there is no continuity, replace it.
If there is no continuity, replace it.
If there is gap between carbon brush and
commutator.
If there is no continuity, replace the switch.
If there is a clog, remove it.
If choked up, replace it. If filter is dirty, clean
or replace it.
Replace the motor and check filter
condition. (never dismantle the motor fan).
Replace the motor.
If each of them is deformed or broken,
replace the beater bar unit.
If there is bearing noise or distance,
replace the Beater bar unit.
If the belt is broken, replace it.