An all-rounder: coffee, espresso, cappuccino, latte macchiato, tea water, hot milk. Simple operation with touchscreen.
The service menu is useful for testing...
In these machines, the ceramic valve controls...
Siemens EQ6 Service Menu
EQ 6 ceramic valve
Flow meter
Pulsation damper/pressure relief valve
Replace the Siemens EQ6 heater
Siemens EQ6 Brew group overhaul
Water in the drip tray - not coffee
These are some common tools used to work on this device. You might not need every tool for every procedure.
TR10 Torx Security Screwdriver
iFixit Opening Tool
If you have a Bosch/Siemens coffee maker, also take a look at the guides for Nivona, Melitta, and Miele machines. They have a very similar design and some components are identical in many cases, such as the pump, drain valve, heater or motor.