Nespresso Momento 120 Service Manual page 4

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10 Milk Module - Functional Details ........................................... 64
10.1 Refrigerator and its Controllers......................................................................................... 64
10.1.1 Overview .................................................................................................................. 64
10.1.2 Milk Level Sensor ..................................................................................................... 65
10.1.3 Milk NTC .................................................................................................................. 66
10.2 Steam Boiler ...................................................................................................................... 67
10.2.1 Level Probe .............................................................................................................. 67
10.2.2 Steam Boiler NTC ..................................................................................................... 68
10.3 Fluid Line NTC .................................................................................................................... 69
11 Repair ................................................................................... 70
11.1 General .............................................................................................................................. 70
11.2 Basic Repair Instructions ................................................................................................... 70
11.3 Safety Information ............................................................................................................ 70
11.4 Screw Connections - Chassis ............................................................................................ 72
11.5 Screw Connections - Coffee Module ................................................................................ 75
11.6 Screw Connections - Milk Module .................................................................................... 77
11.6.1 Metal Component Support ..................................................................................... 78
11.6.2 Plastic Component Support ..................................................................................... 79
11.7 Tools and Accessories ........................................................................................................ 80
11.8 Simple Repair Work ........................................................................................................... 80
11.9 General Disassembly ......................................................................................................... 81
11.9.1 Removable Parts ...................................................................................................... 81
11.9.2 Remove Front Doors ................................................................................................ 83
11.9.3 Remove Panel Rear .................................................................................................. 84
11.9.4 Remove Side Panel(s) ............................................................................................... 86
11.9.5 Remove Coffee Module ........................................................................................... 88
11.9.6 Remove Milk Module............................................................................................... 89
11.10 Chassis Repairs ................................................................................................................ 91
11.10.1 Replace Milk/Coffee Module Coupling .................................................................. 91
11.10.2 Replace Main Fuse ................................................................................................. 92
11.10.3 Remove Water Tank Slot........................................................................................ 94
11.10.4 Replace ON/OFF Switch ......................................................................................... 98
11.10.5 Replace Power Supply ......................................................................................... 100
11.10.6 Remove Drip Tray Contacts for Cleaning ............................................................. 102
11.10.7 Replace Smart PCB ............................................................................................... 103
11.10.8 Replace Extension PCB ........................................................................................ 106
11.11 Coffee Module Repairs .................................................................................................. 108
11.11.1 Remove Main PCB Cover ..................................................................................... 108
11.11.2 Remove Head Base Plate ..................................................................................... 110
11.11.3 Replace Outlet LED .............................................................................................. 113
11.11.4 Replace Capsule Recognition ............................................................................... 115
11.11.5 Replace MMI Assembly (Screen) ......................................................................... 117
11.11.6 Replace Valve(s) ................................................................................................... 121
11.11.7 Replace Thermoblock .......................................................................................... 123
11.11.8 Replace Flowmeter .............................................................................................. 126
11.11.9 Replace Pump ...................................................................................................... 127
Momento 120 Service Manual Version 1.4 EN