Nespresso EF 473, EF 474 )

Repair

Service Manual EF 473 / EF 474 enVersi on 1.0

Replacing electronic control board

with button prints

Tools:

- Torx screwdriver T10

The service engineer must be

earthed using an earthing strap!

)Only touch button prints with

dedicated gloves to avoid oxydation.

Procedure:

1. Follow general disassembly (see page 16).

2. Detach prints of buttons "small cup" (30)

and "large cup" (29) from upper chassis

(1).

3. Remove housing (28) from electronic

control board (28).

4. Unplug NTC connector and all wires from

electronic control board (28).

5. Unplug connector at flow meter (47).

6. Remove 2 screws (23) and replace

defective electronic control board with

button prints (29, 30).

7. Assemble in reverse sequence.

)Check for correct wiring of electronic

control board (see pages 22, 23 or

24).

Contents

Main Contents Preface Main Components Notes Operation Troubleshooting Preface Overview Overview of rating plates Typ: KOENIG MAGIMIX M100 AUTO NESPRESSO Type C100 Turmix TX150 Water circuit Technical data Preparation ) Fill water system Making coffee Programming ) Page Empty water system ) Coffee machine status Troubleshooting Checking the machine on receipt Troubleshooting General disassembly ) Replacing thermoblock and NTC ) 23 47 + 48 Replacing flow meter and On/Off switch ) Replacing pump ) Replacing electronic control board with button prints ) Replacing compact brewing unit (CBU) ) Page Electronic control board, wiring diagram - USA (UL, 120 V / 60 Hz) Electronic Main Board Flow meter Pump Heat NTC Page Descaling (1) ) Descaling (2) ) Measuring flow rate ) Checking for leaks and pump pressure (1) Checking for leaks and pump pressure (2) ) Measuring coffee temperature ) Daily care and final cleaning Repair accessories Spare parts EF 473 Spare parts EF 473 (continued) Spare parts EF 474 Spare parts EF 474 (continued)