User manual JUNIPER NETWORKS T1600

[. . . ] T1600 Core Router Hardware Guide Published: 2010-10-22 Copyright © 2010, Juniper Networks, Inc. Juniper Networks, Inc. 1194 North Mathilda Avenue Sunnyvale, California 94089 USA 408-745-2000 www. juniper. net This product includes the Envoy SNMP Engine, developed by Epilogue Technology, an Integrated Systems Company. Copyright © 1986-1997, Epilogue Technology Corporation. This program and its documentation were developed at private expense, and no part of them is in the public domain. [. . . ] Each green INPUT PRESENT LED on a DC power supply lights when the input is receiving source DC power. Copyright © 2010, Juniper Networks, Inc. 185 T1600 Core Router Hardware Guide · The green AC OK LED on an AC power supply lights when the power supply is receiving source AC power. Each CB ON LED on a DC power supply lights when the circuit breaker is on. Check the LEDs on each three-input 240-A DC or four-input 240-A DC power supply faceplate. · · · Solution 1. DC OK power supply LED is blinking--Check the red alarm LED on the craft interface. DC OK power supply LED is off and no red alarm condition exists--Check that the circuit breakers are switched to the ON position (|). · DC OK LED on one or both of the power supplies is not lit--Check the power supply fans to see if they are operating. · OVER TEMP LED on one of the power supplies lights--Check the fans and air filters to be sure they are functioning and providing sufficient airflow through the chassis. 2. Check the LEDs on each three-phase delta or wye power supply faceplate. · · · AC OK power supply LED is off--Check that the power supply is receiving voltage. DC OK power supply LED is blinking--Check the red alarm LED on the craft interface. DC OK LED on one or both of the power supplies is not lit--Check the power supply fans to see if they are operating. · OVER TEMP LED on one of the power supplies lights--Check the fans and air filters to be sure they are functioning and providing sufficient airflow through the chassis. 3. Check the display on the craft interface to determine the source of a yellow or red alarm (see Table 38 on page 187). The Junos OS constantly updates the screen with status information for each component. NOTE: On the display and in the CLI, the power supplies are referred to as PEM0 and PEM1, from top to bottom. If the system temperature exceeds the threshold, the Junos OS shuts down all power supplies so that no status is displayed. The Junos OS also can shut down one of the power supplies for other reasons. In that case, the remaining power supply assumes the load, and you can still view the system status through the CLI or display. 4. Verify that the source circuit breaker has the proper current rating. 186 Copyright © 2010, Juniper Networks, Inc. Chapter 16: Troubleshooting T1600 Router Hardware Components NOTE: All inputs on a DC power supply in slot PEM0 must be powered by dedicated power feeds derived from feed A, and all inputs on a DC power supply in slot PEM 1 must be powered by dedicated power feeds derived from feed B. This configuration provides the commonly deployed A/B feed redundancy for the system. NOTE: The AC power cord on an AC power supply in slot PEM0 must be powered by a dedicated power feed derived from feed A, and The AC power cord on an AC power supply in slot PEM 1 must be powered by dedicated power feeds derived from feed B. This configuration provides the commonly deployed A/B feed redundancy for the system. 5. Verify that the DC power cables or AC power cord from the power source to the router are not damaged. If the insulation is cracked or broken, immediately replace the DC power cable or AC power cord. 6. Connect the power supply to a different power source with a new DC power cable or AC power cord. If the power supply DC OK LED still does not light, the power supply is the source of the problem. Replace the power supply with a spare. DC OK LED on the installed spare does not light--the replaced power supply might be faulty. To return it for replacement, see "Contacting Customer Support" on page 382. 7. If you cannot determine the cause of the problem or need additional assistance, see "Contacting Customer Support" on page 382. Table 38: Power System Chassis Alarms Component Power supplies Alarm Type Red LCD Display Message PEM pem-number Over Temp PEM pem-number Output Fail PEM pem-number Input Fail CLI Message PEM pem-number Over Temperature PEM pem-number Output Failure PEM pem-number Input Failure PEM pem-number Removed Yellow PEM pem-number Removed Related Documentation · · · · · T1600 Craft Interface Description on page 51. [. . . ] Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis. 3. On the console or other management device connected to the master Routing Engine, enter CLI operational mode. To shut down the router software: user@host> request system halt (If two Routing Engines are installed, also issue the command on the backup Routing Engine. ) Wait until a message appears on the console confirming that the operating system has halted. The command shuts down the Routing Engine cleanly, so its state information is preserved. [. . . ]