• T640 Preventing Electrostatic Discharge Damage on page 506
• T640 General Electrical Safety Guidelines and Electrical Codes on page 529
• T640 AC Power Electrical Safety Guidelines on page 537
• T640 Preventing Electrostatic Discharge Damage on page 506
Powering Off the T640 Router
To power off a T640 router:
1. On the external management device connected to the Routing Engine, issue the
request system halt operational mode command. The command shuts down both
Routing Engines cleanly, so their state information is preserved. (If the router contains
only one Routing Engine, issue the request system halt command.)
user@host> request system halt both-routing-engines
For more information about these commands, see request system halt.
2. Wait until a message appears on the console confirming that the operating system
has halted.
Halt the system ? [yes,no] (no) yes
*** FINAL System shutdown message from root@section2 ***
System going down IMMEDIATELY
Terminated
...
syncing disks... 11 8 done
The operating system has halted.
Please press any key to reboot.
3. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
the strap to one of the ESD points on the chassis.
4. Switch the circuit breakers on each two-input 160-A DC power supply, three-input
240-A DC power supply, or four-input 240-A DC power supply faceplate to the off
position (O) or switch the power switch on each AC power supply or six-input DC
power supply faceplate to the standby position.
Related
Documentation
• T640 Preventing Electrostatic Discharge Damage on page 506
• Powering On a DC-Powered T640 Router on page 239
• Powering On an AC-Powered T640 Router on page 246
Copyright © 2017, Juniper Networks, Inc.248
T640 Core Router Hardware Guide
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