QTech QSW-4700 Series

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QSW-4700 Series Switches Hardware Installation and Reference Guide

Troubleshooting

6. TROUBLESHOOTING

6.1. Troubleshooting Flowchart

6.2. Troubleshooting

6.2.1. Fault 1: The login password is forgotten.

Symptom

Failed to log into the system.

Suggested Action

Please contact QTECH technical support.

Main Page

Table of Contents2
Product Overview7
QSW-4700 Series Switches7
Qsw-4700-28Tx8
Specifications8
Appearance10
Front Panel10
Back Panel11
Power Supply Module11
Cooling11
Led12
Qsw-4700-52Tx13
Specifications13
Appearance15
Front Panel15
Back Panel16
Power Supply16
Cooling16
Led17
Qsw-4700-28Tx-Poe18
Specifications18
Appearance21
Front Panel21
Back Panel22
Power Supply22
Cooling22
Led22
LED Mode Button24
Qsw-4700-52Tx-Poe24
Specifications24
Appearance27
Front Panel27
Back Panel27
Power Supply28
Cooling28
Led28
LED Mode Button30
Qsw-4700-28F30
Specifications30
Appearance32
Front Panel32
Back Panel33
Power Supply33
Cooling33
Led34
Qsw-4700-52F35
Specifications35
Appearance37
Front Panel37
Back Panel38
Power Supply38
Cooling38
Led39
Power Supply Module40
QSW-M-4700-AC Module40
Specifications40
Features41
Led42
QSW-M-4700-DC Module42
Specifications42
Features43
Led43
QSW-M-4700-POE-AC Module44
Specifications44
Features45
Led45
QSW-M-4700-POE-DC Module46
Specifications46
Features47
Led47
QSW-M-4700-HPOE-AC Module47
Specifications48
Features49
Led49
Preparing for Installation50
Safety Precautions50
General Safety Precautions50
Handling Safety50
Electric Safety50
Electrostatic Discharge Safety51
Laser Safety51
Installation Environment Requirements51
Ventilation Requirements51
Temperature/Humidity Requirements51
Cleanliness Requirements52
Anti-Interference Requirements53
Grounding Requirements53
Safe Grounding53
Lightning Grounding53
EMC Grounding53
Lightning Protection Requirements54
EMI Requirements54
Fiber-Optic Cable Connection Requirements54
Tools54
Installing the Switch55
Installing Procedure55
Before You Begin56
Mounting the Switch56
Mounting the Switch in a Rack56
Mounting the Switch on the Wall57
Installing the Switch on a Workbench58
Installing and Removing a Power Supply Module58
Installing the AC Power Supply Module58
Removing the AC Power Supply Module59
Installing the DC Power Supply Module59
Removing the DC Power Supply Module60
Grounding the Switch61
Connecting Cables61
Bending Steps62
Cable Bundling62
Bundling Steps62
Verifying Installation62
Verifying Operating Status63
Setting up Configuration Environment63
Connecting an Ethernet Cable63
Setting Parameters63
Powering on Switch65
Checklist before Power-On65
Checklist after Power-On (Recommended)65
Monitoring and Maintenance66
Monitoring66
Led66
CLI Commands66
Maintenance66
Cooling System Maintenance66
Power Supply Module Maintenance66
Replacing Lithium Battery67
Replacing Fuses67
Troubleshooting68
Troubleshooting Flowchart68
Fault 1: the Login Password Is Forgotten68
Fault 2: the AC Power Module Does Not Work69
Fault 3: the Serial Port Console Has no Output69
Fault 4: the Serial Port Console Output Is Garbled69
Fault 5: the Link Cannot be Set up on the Fiber Port69
Appendix71
Connectors and Media71
1000Base-T/100Base-Tx/10Base-T71
Fiber Connection72
Lightening Protection72
Installing AC Power Arrester (Lightning Protection Power Strip)72
Installing the Ethernet Port Arrester73
Ethernet Port Arrester74
Cabling74
Requirements for Cable Bend Radius75
Requirements for Fiber Bend Radius75
Precautions for Bundling up Cables75
Site Selection77
Список Поддерживаемого Функционала79
Общая Информация80
Замечания И Предложения80
Гарантия И Сервис81
Техническая Поддержка81
Электронная Версия Документа81

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