Electrolux C240, Service Manual, Page: 26 / 40

12. Functions sequences
12
Service
manual
487 03 29 91
12.14
Measurement points
A number of measurement points are shown in the adjacent diagram. The table below
shows what each measurement is for, where to measure and the value which you should
obtain.
The measurements described below should be made with extractor in inactive state, i.e. with
the drum not rotating.
Special care must be taken at the measurement points for the edge connections to the
curcuit bourd for automatic functions. The “measurement covers” for connections must be
opened with no power supply present (Main switch - Off).
Edge connection X16 supplies the primary voltages to the auxilliary transformer, when
measuring S3 and S6 of the Hall element, small thin measuring clips for digital meters must
be used.
Pos. signal Measurement Correct value
point
A
Incoming mains voltage.
X1:L3,L2
and
L1
115V, 200V,
208-240V,
230V, 380V, 400V,
415V or 440V
B
Primary voltage
X16: 1-3
As above
to aux. transformer.
C
Secondary voltage
X17:1-2
24V AC
from transformer.
D
Power supply, circuit board
S1: 1-2
24V AC
Power supply, circuit board
S1: 2-3
24V AC
E
Hall element in motor,
S4: 3-1
5V AC
power supply.
5 V DC
output**
S4: 2-1
1 rev
0 V DC
F*
Reed sensor 1 in lid
S3: 1
GND1 - 2 out 1 Open lid ∞ Ω
Closed lid 0 Ω
Reed sensor 2 in lid
S6: 1
GND2 - 2 out 2 Open lid ∞ Ω
Closed lid 0 Ω
F*
Except C290R
** 0 V DC cannot be measured with an ordinary digital meter during operation.
This potential can be checked with the lid open and by slowly turning the drum clockwise
by hand.