Ea1: Drum Positioning System (Dsp) Faulty (Top-Loaders) - Electrolux EWM1100 Service Manual

EA1: Drum positioning system (DSP) faulty (top-loaders)

EA1
No signal or discontinuous signal from the sensor for more than 10 seconds during actioning
Tests to be performed:
Is the drive belt OK? Is the pulley OK? Is the ferrite plate
positioned correctly?
Remove the connector and measure directly on the
sensor: - circuit closed when on the normal section of the
pulley (fig.18) - circuit open when on the ferrite plate
(fig.19). Is the sensor efficient?
Replace the connector and measure across J12-1 and
J12-3 on the wiring connector: when the drum is rotated,
the circuit should open and close. Check for leakage to
ground across the same terminals.
Is the wiring OK?
Start the diagnostic cycle (phase 9). If alarm EA1
reappears, replace the circuit board and restart the
diagnostic cycle to check for further alarm conditions.
fig. 18
fig. 20
2007-10 SOI/DT-mdm FCPD-dp Quality-fz
of the motor to position the drum
(fig. 20)
YES
YES
YES
NO
Replace the belt/pulley and restart
the diagnostic cycle to check for
Replace the positioning sensor and
NO
restart the diagnostic cycle to check
NO
Check/replace the wiring and restart
the diagnostic cycle to check for
If there are traces of burning on the
circuit board, refer to page
52/59
further alarm conditions.
for further alarm conditions.
further alarm conditions.
∞
Ω
0/
Circuit
board
∞
Ω
∞
Ω
0/
599 70 32-47
EA1
59
fig. 19