Doc. No. 78-1455-02 600W DC-Input Power Supply Replacement Instructions Product Numbers: PWR-7010-DC= and PWR/5-DC= This document contains instructions for replacing the 600W, direct current (DC)–input power supply which is a available as a spare part for the Cisco 7010 and Cisco 7505 router. Note When referring to both the Cisco 7010 and Cisco 7505 chassis, the term the chassis will be used. The sections in this document include the following: • • • • • Copyright © 1995 Cisco Systems, Inc.
Product Overview Product Overview The chassis can be equipped with one 600W, DC-input power supply, which rests on the interior chassis floor, operates on DC input, and provides DC output voltages to the system components. (See Figure 1.) This power supply completely replaces the AC-input power supply, which is also available for these chassis. The DC-input power supply is used where isolated DC power sources are desirable.
Product Overview DC-Input Power Supply (Terminal Block Cover Removed) H2536 Figure 2 Terminal block On/Off switch DC-input power supply DC OK LED If the DC source power or any of the internal DC voltages exceeds allowable tolerances, the DC OK LED goes off and the system environmental monitor messages indicate the line that is out of tolerance.
Prerequisites Prerequisites Before you begin this installation, review the safety guidelines in this section to avoid injuring yourself or damaging the equipment. This section also discusses ESD prevention guidelines and provides a list of the tools that you need to perform this replacement. Safety Guidelines When working with any electrical equipment, the following guidelines will help to ensure your safety and protect the equipment.
Prerequisites Preventing Electrostatic Discharge Damage Electrostatic discharge (ESD) damage, which can occur when electronic boards or components are handled improperly, can result in complete or intermittent failures. The RP, SP (or SSP), and interface processors each comprise a printed circuit board that is fixed in a metal carrier. EMI shielding, connectors, and a handle are integral components of the carrier.
Power Supply Replacement Refer to the Cisco 7010 Hardware Installation and Maintenance or Cisco 7505 Hardware Installation and Maintenance publications for the tools you will need and descriptions of the rack mounting hardware. Power Supply Replacement To access the power supply, you must remove the chassis cover panel and expose the chassis interior. Two captive slotted screws secure the cover panel to the chassis. The power supply rests on the floor of the chassis, under the card cage and backplane.
Power Supply Replacement Removing and Replacing the Chassis Cover Panel H2920 Figure 3 Captive screws Step 3 Pull the top of the panel out about three inches, then grasp the sides of the panel and pull it up and away from the chassis. Step 4 To replace the cover panel, hold the sides of the panel with both hands and tilt the top of the panel back slightly (toward you). Step 5 Slide the guide tabs into the slots in the bottom edge of the chassis. (See Figure 3.
Power Supply Replacement Replacing the Power Supply You must remove the power harness cover and disconnect the power harness from the backplane receptacle before you can remove the power supply. A single M3 Phillips screw secures the power harness cover to the backplane cover. To remove the power supply, you will remove the two M4 Phillips screws that secure the power supply ears to the chassis frame.
Power Supply Replacement Figure 4 Removing and Replacing the Terminal Block Cover and Power Cable Leads a b Caution: Do not strain the connection at the terminal block -48/-60V — 20/16A -48 RTN -48/-60V — 20/16A -48 RTN POWER SUPPLY TERM. BLOCK COVER - USE ONLY WITH NEC CLASS 3 WIRING - USE COPPER CONDUCTORS POWER SUPPLY TERM.
Power Supply Replacement Step 7 Holding the cover with one hand, tilt the top of the cover back toward you, then pull it up slightly so that the tab clears the slot in the chassis floor. Step 8 When the tab clears the slot, pull the cover straight back OFF the harness and out of the chassis. Step 9 Disconnect the power harness plug from the backplane receptacle by pulling the polarized plug out of the receptacle; do not pull on the wires. (See Figure 6a on page 11.
Power Supply Replacement Figure 6 Removing and Replacing the Power Supply and Harness Cover Power supply ears a. Power harness Phillips screws (2 places) b. Backplane power receptacle Removing/replacing power supply H2921 c. Handling the power supply To prevent damaging the power wires, disconnect the power harness by pulling on the connector plug; do not pull or tug on the harness wires.
Power Supply Replacement Replacing the Power Supply and Power Harness Cover Follow these steps to remove the power harness cover and power supply. You will need a number 2 Phillips screwdriver. Note The installation must comply with the 1993 National Electrical Code and other applicable codes. Step 1 Ensure that the power switch on the new power supply is in the OFF (O) position and that the terminal block cover is not installed on the new power supply.
Power Supply Replacement Step 12 If you removed the ground wire, reattach it now. (See Figure 4d on page 9.) Step 13 Tighten the captive screws on the terminal block cover. (See Figure 4a on page 9.) Warning To prevent a short-circuit or shock hazard after wiring the DC-input power supply, replace the terminal block cover. Step 14 To replace the chassis cover panel, follow Steps 4 through 7 in the section “Removing and Replacing the Chassis Cover Panel” on page 6.
Cisco Information Online For the Cisco 7010, the system can identify which type of power supplies are in your chassis: DC-input or AC-input. As a general precaution, use the show environment all command and note the type of power supply indicated in each of your chassis (indicated as either “600W DC” or “600W AC”). Record and save this information in a secure place. Timesaver The power supply replacement procedures are complete.