Panasonic MC-YL699-S146, Service Manual, Page: 5 / 16

5
3 Troubleshooting Guide
CONDITION CHECKPOINT METHOD OF INSPECTION CAUSE / REMEDY
Motor fails to rotate when it is
switched on Meltdown of fuse unit Check fuse continuity.
(Visual and conduction check) Replace the main switch (with
fuse).
*Check the motor at same
time.
There may be the possibility
of a motor problem
Continuity of power cord unit Check power supply cord continu-
ity.
Check the continuity between
1. Lead wire connection of
main unit switch
2. Lead wire connection termi-
nal of the motor
and the blades of the plug
using a tester.
Replace the power cord unit
Continuity of the switch Check with tester between both ter-
minals on the switch, while turning
switch ON/OFF. If there is no continuity, replace the
main switch (with fuse).
Check of the motor connection
faston terminals Check if it is securely connected by
pulling on the lead wire. Securely connect.
Continuity of the motor Check the continuity between both
terminals (1.Orange connection of
lead wire 2.Brown connection of
lead wire) (lead wire connection
terminal) of the motor. If there is not continuity, replace
motor set.
(Disconnection of the coil inside the
motor)
Wearing of the carbon brush Visually check if one side of the
carbon brush is worn out abnor-
mally. Replace motor set.
Suction is weak Clogging in extension pipe /
nozzle assy / hose assy Check for clogging in each part Remove dust or replace parts
Clogging in the cloth bag / filter
of the dust compartment Check for clogging in each part Clean
Abnormal sound Indicator pipe unit
(Air protector) Is it full of dust?
Clogging Clean
Remove dust from each parts
Motor Problem with the motor or carbon
brush Replace the motor set.