English - 3
1 Function 5
1.1 Husqvarna Automower
®
420, 430X and 450X, what's what? 5
1.2 Introduction 6
1.3 Technical data 7
1.4 Software 8
1.5 Cutting technique 9
1.6 The loop system’s control signals 11
1.7 Loop system status 12
1.8 Boundary wire 12
1.9 Guide wire 14
1.10 Searching methods to nd the charging station 14
1.11 Automatic detection of passages 16
1.12 Docking and charging 16
1.13 Battery 16
1.14 Sensors 17
2 Special menu functions 18
2.1 Quick Info 18
2.2 Discover the PIN code 25
2.3 Tools menu 25
2.4 Main menu, an overview 26
2.5 Tool menu, an overview 27
2.6 Tool menu, functions 28
3 Installation 35
3.1 Charging station 35
3.2 Boundary wire 36
3.3 Guide wire 38
3.4 Testing the installation 39
3.5 Calibrate guide 40
3.6 One robotic lawnmower for several working areas 41
3.7 Even mowing results in complex working areas 41
3.8 Weather timer 42
3.9 Safe operation on slopes 43
3.10 New loop signal 43
4 Autocheck Experience, service program 44
4.1 Installation and login 45
4.2 Connection to the robotic lawnmower 46
4.3 Use 47
5 Repair instructions 54
5.1 Design and function 55
5.2 Dismantling and assembling the robotic lawnmower 59
5.3 Dismantling the charging station 63
5.4 Assembling the charging station 63
5.5 Changing the top cover (450X) 64
5.6 Replacing the charging strips 64
5.7 Replacing the battery 65
5.8 Replacing the MCB 65
5.9 Replacing the HMI board 66
5.10 Replacing the GPS board/Automower Connect board 67
5.11 Replacing the keypad 68
5.12 Changing the ultrasound sensors (450X) 69
5.13 Replacing the ultrasound board (450X) 69
5.14 Replacing the headlight (450X) 69
5.15 Replacing the buzzer 70
5.16 Replacing the main switch 70
5.17 Cleaning or replacing the ventilation lter 71
5.18 Replacing the sensors 72
5.19 Replacing the blade motor 74
5.20 Replacing the wheel motor 75
5.21 Replacing the cutting height adjustment motor 75
5.22 Replacing the rear collision columns 76
5.23 Replacing front collision column/lift sensor 76
5.24 Changing and regreasing lower front wheel bearing 78
5.25 Replacing the circuit board, charging station 78
5.26 Replacing the contact strips, charging station 79
5.27 Assembling the sealing strip 79
5.28 Mounting screws 80
5.29 Mounting thread plugs 81
5.30 Screw fasteners 82
6 Troubleshooting 83
6.1 Messages 84
6.2 Symptom 91
6.3 Loop signal 95
6.4 Troubleshooting the loop signal 95
6.5 Finding a break in the boundary wire 97
6.6 Battery test 98
7 Maintenance and service 100
7.1 Cleaning 100
7.2 Winter storage 100
7.3 Service schedule 101
TABLE OF CONTENTS
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