Service Manual EF 472
27
R E P A I R S
5.7 Replacing the mainboard with the button
prints
Repair tips
•
Check the assembly position of the spring (14).
•
A label on the housing of the mainboard (35) contains specifications on the hard
ware and software version.
•
After assembly check the plug arrangement of the mainboard (see "Wiring
diagrams" on page 29).
When installing a
new electronic
component, the service
technician must the
earthed with a grounding
band.
