Philips HD9220/40, Service Manual

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HD9220/40
2-9
TROUBLE SHOOTING
Part/System Test Possible deviation Analyses
Replace
(depending of the
analyses outcome)
Timer Check if the green light is lit,
and if you can hear the timer
ticking The green light is not lit
but the timer is ticking Check the timer-switch and the
fuse with a multimeter Timer/Fuse
The green light is lit but
the timer is not ticking Timer is defective Timer
Thermostat Set the temperature at 80 °C
and check if the heating
element is getting warm
(Check input power approx.
1425 W)
The green light should be lit
and the orange light should
switch off after it reaches
80 °C Both green and orange
light are lit but there is no
heating Check the heating element with
a multimeter Heating element
If the green light is lit and
the orange light is off Check the thermostat with a
multimeter Thermostat
If both the green and
orange light are off Check the timer and fuse with a
multimeter Timer/Fuse
The orange light does not
switch off after reaching
approx. 80 °C Thermostat is defective Thermostat
Motor fan
assy Set the timer and listen if the
motor is running Motor is not running The fan is scraping the housing
turning it by hand (Switch off
the power when you do this test!) Motor fan assy
The fan is not scraping the
housing turning it by hand
(Switch off the power when you
do this test!):
Check the motor fan assy, timer
and fuse with a multi meter Motor fan assy /
Timer/Fuse
Heating
element Check if the heating element
is getting warm
(Check input power approx.
1425 W) If the Orange light is on
and the heating element
does not heat Check the heating element with
a multimeter Heating element
If the heating element
does not heat and the
orange light is off Check the timer, fuse and
thermostat with a multimeter Timer/Fuse/
Thermostat
Thermal fuse Set the timer and check if
the green light is lit
Green light is not lit Check the timer and fuse with a
multimeter Timer/Fuse