19
Repair
Service Manual EF 470 / EF 471
en
Version 1.1
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 15).
2. Detach prints of On/Off button (30) and
coffee button (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. Remove 2 screws (23) and replace defect
electronic control board with button prints
(29, 30).
6. Assemble in reverse sequence.
)
Check for correct wiring of electronic
control board (see pages 21, 22 or
23).
1
28
23
30
29
