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REPAIR INSTRUCTION
SENSOR AND LED TEST
To validate the assembly and electrical correctness of an
appliance, especially during testing and debugging phase,
a sensor and LED test is very useful. Please keep in mind
that it is not an automated test and only intended as
indication.
Service-step 0 Entry to test mode:
1. Connect mains;
2. After 0.5 second and before 1.5 second operate the
2-cup button.
3. Release all switches.
4. All LEDs will be ON for 1.0 seconds and after that
switch to OFF again.
Service-step 1 Sensor identifi cation:
1. Manually operate a button or sensor.
The related LED - refer to the table on p.4 -
will be ON.
2. Release the button or sensor.
The related LED - refer to the table on p.4 -
will be OFF.
Service-step 2 End test
1. Disconnect mains
end test program
PCBA REPLACEMENT
When there is the need for a PCBA replace-
!
ment the default setting of the PCBA will be:
• Boiler empty flag = SET
• ME/HE selection = Mid end
• Country selection = General version
Please follow below way of working.
Start
Manual pump
calibration
(see previous page)
Country
selection
(see previous page)
ME / HE
selection
(see previous page)
*) you can enable the Personal coffee
End
Sets the default
Regular coffee cup
volume
Sets the
corresponding
Strong coffee cup
volume
Enables the Personal
coffee memory
function*
(HD7872 / HD7873 only)
memory function on a HD7870
appliance, but the LED on the User
Interface will not be visible.
HD7870/80 / HD7870/81
7-12
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