Elektronik Delonghi ECAM23.420 board transnission motor not moving

Diskutiere Delonghi ECAM23.420 board transnission motor not moving im DeLonghi Forum im Bereich *** Sonstige Kaffeevollautomaten ***; Restored power supply, but transnission motor not moving. Please for an electrical circuit , scheme. Defect LNK364 , 1mH , 47R 3W , Thanks.
  • Delonghi ECAM23.420 board transnission motor not moving Beitrag #1
S
shema
Teetrinker
Dabei seit
15.09.2017
Beiträge
9
Restored power supply, but transnission motor not moving.
Please for an electrical circuit , scheme.
Defect LNK364 , 1mH , 47R 3W ,
Thanks.
 
  • Delonghi ECAM23.420 board transnission motor not moving Beitrag #2
Ano
Ano
Espressotrinker
Dabei seit
12.11.2014
Beiträge
783
Please check if -5 V DC (e.g. on the PIC) and -20 V DC (on the relay pin) are present.
Measured with "N" of 230 V AC power as ground.
 
  • Delonghi ECAM23.420 board transnission motor not moving Beitrag #3
S
shema
Teetrinker
Dabei seit
15.09.2017
Beiträge
9
The wires of the plug М1 Infuser top position were disconnected
under the top cover .???
After the wires are restored, all is ok
the voltages are -5V and -12V.
The relay coils are 12V. ???
I think the -20V is a lot
 
  • Delonghi ECAM23.420 board transnission motor not moving Beitrag #4
Ano
Ano
Espressotrinker
Dabei seit
12.11.2014
Beiträge
783
Great!
20 V seems to be a lot, but most DeLonghi machines that have a transformer on the power pcb instead of a switching power supply use really 20 V for switching the 12 V relays (which is actually still within the specs: 190% of voltage is allowed).
 
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Delonghi ECAM23.420 board transnission motor not moving

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