error 1 grinder block on Lyrica

[uhrmacher]

I also mean whether the side to the board is plugged into the right connection.

 

[espressotech]

yes JP2 it can only be connected to that socket every socket is different plug also tried 2 different cables

 

[uhrmacher]

Then go into test mode and activate the grinder. The pulses of the sensor must be displayed.

 

[espressotech]

@uhrmacher that was problem from start does not go into test mode I mentioned it before please look 2 messages ago.
It once entered and no movement of motor and did not succeed again to renter
I did on+menu+espresso and on+menu+coffee and it entered once but no more

 

[uhrmacher]

You have to press and hold the menu and the corresponding 2nd button at the same time and then plug in the mains plug first, then it will also work with the test menu or the evaporation menu.

 

[espressotech]

Yes you mean the 2nd you mean the coffee button i press both and switch on from back and it turns on like usual not test mode

 

[uhrmacher]

Bottom right and top left doesn't work, but all buttons work? It has to work. Long press until the service menu screen comes up.

 

[espressotech]

Yes tried many times only standby button light up

 

[uhrmacher]

If the buttons themselves work, it must work. Wait at least 5 seconds before releasing the two buttons.

 

[espressotech]

Problem is aftet i press the and turn on before i release the stand by light already on in that case it cannot enter test mode

 

[uhrmacher]

You're not supposed to touch the Stanby button! It is switched on at the main switch on the back of the machine!

 

[espressotech]

Yes i know nothing happens when i realese the buttons and before when i succeed grinder was on 0

 

[uhrmacher]

Then the sensor is defective, or the magnets in the gear wheel are missing, or the wiring harness is defective, or the evaluating electronics.

 

[espressotech]

@uhrmacher i connected a complete set of grinder and sensor taken from functional minuto machine it did not enter test mode and error 1 was generated when trying to activate espresso.
where can i buy in Germany this board 421941308901?

 

[uhrmacher]

Are you sure it's the board? Can you first measure the voltage at the 3 terminals of the sensor? There must be 5 volts and one pin is the signal pin where the voltage changes when the magnet is over the sensor.

 

[espressotech]

How would I do it ?, the contacts are not accessible and this sensor and grinder works without problem in another machine when i connect it to the Lyrica it does not enter test mode and get error 1

 

[uhrmacher]

Enter test mode Lyrica goes with the middle button on the right and the top button on the left. Try that. The contacts can be reached with a needle tip from the back of the small connector.
If the grinder motor does not start at all, not even for a short time, small SMD resistors with 180 ohms in the optocoupler area may be defective.

 

[espressotech]

Yes i can enter test mode this way / no response from grinder motor and I could not find the smd resistors you are referring to Can you help me locate it?
near the sensor socket there are 2 101 resistor of 1 k ohm

 

[espressotech]

near i found 180 resistor R82 i got 150 kΩ is it defective? is there another one?
it is near optocoupler U5 near the sensor socket

 

[uhrmacher]

Not near the sensor socket but near the optocouplers in the center of the board