Bosch TCA640 Series, Repair Instruction

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Fully-automatic coffeemaker
58300000120060_ARA_en_c.doc – 18.09.09 Seite 1 von 95
1 SAFETY ........................................................ 3
1.1 Safety instructions.............................................................. 3
1.2 Repair instructions ............................................................. 3
2 INSTALLATION ............................................ 4
2.1 Installation ........................................................................... 4
2.2 Scope of delivery ................................................................ 4
3 OPERATION ................................................. 5
3.1 Switching on the appliance................................................ 5
3.2 Filling up the pipe system .................................................. 6
3.3 Emptying the pipe system.................................................. 6
3.4 Controls ............................................................................... 7
3.5 Changing the programming / standard settings ............ 13
3.6 Preparation ........................................................................ 20
3.7 Cleaning............................................................................. 23
4 COMPONENTS........................................... 26
4.1 Flowmeter .......................................................................... 26
4.2 Heater and NTC-sensor .................................................... 27
4.3 Brewing unit ...................................................................... 29
4.4 Gear unit ............................................................................ 34
4.5 Cappuccino / caffelatte frother ........................................ 38
4.6 Coffee outlet ...................................................................... 40
4.7 Drip tray ............................................................................. 42
4.8 Water filter ......................................................................... 44
5 FUNCTIONS................................................45
5.1 Construction ..................................................................... 45
5.2 The perfect espresso........................................................ 47
5.3 Functional principle.......................................................... 47
5.4 Warming the cups............................................................. 47
5.5 The fluid system ............................................................... 48
5.6 Temperature ...................................................................... 49
6 REPAIR .......................................................51
6.1 Reading out internal appliance data ............................... 51
6.2 Replacing the brewing unit .............................................. 52
6.3 General disassembly........................................................ 55
6.4 Replacing the thermal fuse .............................................. 56
6.5 Removing the coffee outlet.............................................. 58
6.6 Replacing the front panel................................................. 61
6.7 Steam button and operating panel replacement............ 62
6.8 Replacing the steam pipe ................................................ 63
6.9 Solenoid valve replacement ............................................ 64
7 FAULT DIAGNOSTICS ...............................65
7.1 Malfunctions ..................................................................... 65
7.2 System and error messages ............................................ 71
7.3 Incoming goods inspection ............................................. 77
7.4 Service diagnosis ............................................................. 78
7.5 Troubleshooting ............................................................... 84
7.6 Measuring the coffee temperature .................................. 91