H3c-technologies H3C WX5000 Series Access Controllers Manual de usuario Pagina 75
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B-2
3) Pay adequate attention if the red LED is on. You should correctly locate the problem, whether it is
caused because the ground cable of the arrester is not well grounded or because the live and zero
wires are connected in reverse direction.
4) You may use a multimeter to examine the polarity at the power receptacle of the arrester:
z With the power receptacle facing you, if the multimeter displays that the left wire is the zero wire
and the right is the live wire, it means that the PE terminal of the arrester is not well grounded.
z Otherwise, it means that the power receptacle of the arrester is set to the reverse polarity. In this
case, open the power receptacle of the arrester and correct the polarity. After that, if the red LED
still alarms, it means that the arrester is not well grounded yet.
- Installation Manual 1
- About This Manual 3
- Documentation Feedback 4
- Table of Contents 5
- Access Controller Overview 7
- Rear Panel 8
- Specifications 9
- Components 10
- Fixed Interfaces 11
- Ethernet interfaces 12
- Interface Numbering 15
- 2 Installation Preparation 16
- Installation Site Checking 17
- Anti-Static Requirements 18
- Laser Safety 19
- Installation Tools 20
- 3 Installation 21
- Mounting bracket structure 22
- Installation procedure 22
- Slide rail appearance 27
- Connecting the Ground Wire 29
- Connecting the Power Cord 31
- Connecting the DC Power Cord 32
- Connecting Interface Cables 33
- Checking the Installation 35
- 4 Initial Startup 36
- Checking Before Power-On 38
- 5 Software Maintenance 41
- Configuration Files 42
- BootWare Menus 44
- Serial submenu 46
- Ethernet submenu 46
- File control submenu 46
- BootWare operation submenu 47
- BootWare Menu 55
- Using the BootWare menu 63
- Using the CLI 63
- Dealing With Password Loss 65
- [H3C] save 66
- Backing up the BootWare 67
- Restoring the BootWare 67
- 6 Troubleshooting 68
- Configuration System Failure 69
- Network Interfaces 71
- Precautions 72
- LVD/EMC Directive 77
- USA regulatory compliance 78
- Canada regulatory compliance 78
- Japan regulatory compliance 79
- Overview Überblick 81
- Power Cable Zuleitung 电缆 84
- Laser Laser 激光辐射 85
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