Grinder Tuning - Philips 5000 LATTE GO Service Manual

PHI 5000 LATTE GO / GO+

4.2. Grinder Tuning

Press the Z5 button for 3sec to reset a parameter of the Grinder
ERROR: The number remains 0 or the grinder does not run, the
display backlight changes from white to red; check the Grinder and
the wiring from the Grinder to the CPU/POWER board (JP8)
Check the temperature
The number shows the heater temperature.
ERROR: In the indication HEATER appears "SHORT", the NTC
temperature-sensor is shorted, the display backlight changes from
white to red; check the wiring from the NTC temperature-sensor to
the CPU/POWER board (JP13).
ERROR: In the indication HEATER appears "OPEN", the NTC
temperature-sensor is detached or broken, the display backlight
changes from white to red; check the wiring from the NTC
temperature-sensor to the CPU/POWER board (JP13).
Press the Z1 button to switch on the Heater
The absorbed current ( Amperometer on the main supply) is OK, the
indication HEATER changes from "OFF" to "ON" and the temperature
starts increasing.
If temperature is over 100°C, the backlight change from WHITE to
RED. This is a ALERT message to avoid heating the HEATER element over
dangerous temperature.
ERROR: the absorbed current is KO or the temperature does not
increase; check the wiring from the heater to the CPU/POWER
board (JP19) and the wiring of the NTC temperature-sensor (JP13).
Start condition
The aging parameter of the grinder is setted to his initial value
screen with the text "RESET GRINDER PARAMETERS" is showed for 3sec.
ERROR: The display doesn't change
04 DIAGNOSTIC MODE
7/8
a