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This chapter provides maintenance information for the Cisco 6400 universal access concentrator. All cards, modules, and components in the Cisco 6400 support hot swapping. Hot swapping allows you to remove, replace, and rearrange the cards without turning off the system power. When the system detects that a card or module has been added or removed, it automatically runs diagnostic and discovery routines, acknowledges the presence or absence of the card or module, and resumes system operation without any operator intervention.
This chapter includes the following sections:
You need the following tools and equipment to remove and replace modules. If you need additional equipment, contact a service representative for ordering information.
 | Caution Static voltages as low as 30 volts can cause latent damage to circuitry. Be sure to observe all standard anti-static procedures (for example, wear a grounding strap) when handling electronic equipment and components. |
 | Warning Blank faceplates (filler panels) serve three important functions: they prevent exposure to hazardous voltages and currents inside the chassis; they contain electromagnetic interference (EMI) that might disrupt other equipment; and they direct the flow of cooling air through the chassis. Do not operate the system unless all cards and faceplates are in place. |
| Warning
Class 1 laser product. |
| Warning
Because invisible radiation may be emitted from the aperture of the port when no fiber cable is connected, avoid exposure to radiation and do not stare into open apertures. |
| Warning
Invisible laser radiation present. |
| Warning Alleviates ja suojalukitus ohitettaessa olet alttiina nãkymãttõmãlle lasersãteilylle. Ãjã katso sãteeseen. |
| Warning Osynlig laserstrålning när denna del är öppen och förregleringen är urkopplad. Rikta inte blicken in mot strålen. |
| Warning To prevent personal injury or damage to the chassis, never attempt to lift or tilt the chassis using the handles on modules (such as power supplies, fans or cards); these types of handles are not designed to support the weight of the unit. Lift the unit only by using handles that are an integral part of the chassis, or by grasping the chassis underneath its lower edge. |
| Warning Two people are required to lift the chassis. To prevent injury, keep your back straight and lift with your legs, not your back. |
Figure 5-1 shows the proper way to lift the Cisco 6400 chassis.
The Cisco 6400 system has a hot-swap feature that allows you to install and remove modules and cards while the system is operating. With hot swapping, you do not need to power down the system.
Unconfigured node line cards (NLCs) installed for the first time start up in the shutdown state. The system identifies them as present but unconfigured. Instructions for initial interface configuration are in the Cisco 6400 UAC Software Configuration Guide.
If a card or module similar to the one that was removed has been reinserted into a slot, its ports are configured and brought online up to the port count of the original card.
| Caution To avoid erroneous failure messages, allow at least 15 seconds for the system to reinitialize after hot-swapping a module or card. Note the current configuration of all interfaces before you remove or insert another module or card. |
The following are recommended insertion practices:
Any module that is only partially connected to the backplane can disrupt system operation.
Figure 5-2 identifies the major components of the Cisco 6400 system. Card slots 1 through 8 can contain a combination of node route processor (NRP) and node line card (NLC) modules; only node switch processor (NSP) modules can be inserted into card slots 0A and 0B.
The Cisco 6400 system is equipped with a plastic front cover, which provides protection to cables and connectors against damage. This cover extends approximately 1.5 inches out from the edge of the chassis.
To remove the front cover, first remove the bezel plugs. Insert the tip of a flathead screwdriver into the indentation between the top and bottom of the plug; rotate the screwdriver blade 90 degrees, pushing out the top of the plug (see Figure 5-3); remove the plug with your fingers.
Then firmly grasp the cover with both hands, lift upward as far as possible (about 1 inch), and pull forward. The cover is secured by four posts. Avoid bending or twisting cables and connectors.
To install the front cover (see Figure 5-4), line up the hole in each corner of the cover with the four posts on the chassis.
Gently but firmly push the cover onto the posts and slide downward to secure. Then take one of the bezel plugs and insert it into a corner hole, below the post; when the plug is lined up in the hole (see Figure 5-4), gently but firmly press on the top of the plug with your thumb until the top collapses against the bottom. Repeat for the remaining three corners. Avoid bending or twisting cables and connectors.
Use the following procedure to power down the Cisco 6400 system:
Step 1 Notify appropriate personnel that you plan to shut down the Cisco 6400 system and that this will result in total loss of service. Appropriate personnel here includes the regional alarm or network monitoring center, central office personnel, and key customers.
Step 2 Before shutting down the Cisco 6400, use the copy command to save any configuration changes to NVRAM, and also, if you wish, to a PCMCIA Flash card.
(See the Cisco 6400 UAC Command Reference Guide for instructions on using
the copy command.)
Step 3 Complete all copy or write operations involving Flash media (PCMCIA slots or boot Flash) before you power down the Cisco 6400.
Step 4 To power down the Cisco 6400, turn off the switch on all PEMs (your system can have one or two PEMs).
Cisco recommends that you create a duplicate PCMCIA card that contains the current boot software image and the current software configuration. You can use the duplicate to recover from a major system failure with less disruption. If you have a backup PCMCIA card, you can use that card to load a new NSP module and avoid a time-consuming reconfiguration process. For instructions on creating a backup PCMCIA card, refer to the Cisco 6400 UAC Software Configuration Guide.
The Cisco 6400 automatically powers down if the system overheats. If the air filter is too dirty or clogged, the system may have insufficient air flow and therefore may overheat.
You should replace the Cisco 6400 air filters every 6 months. In certain environments, you might have to replace the filter more frequently.
To remove the air filter from the Cisco 6400 chassis, follow these steps (see Figure 5-5):
Step 1 Locate the filter tray at the bottom front of the chassis, below the plug-in modules. Use a number 2 Phillips screwdriver to unlock the filter tray.
Step 2 Gently pull the filter toward you to remove it from the chassis.
Step 3 If you are replacing the filter, discard the old filter, and go to the "Replacing the Air Filter" section.
Use this procedure to install a new filter:
Step 1 Hold the air filter with the arrows (located on the metal frame) facing up.
Step 2 Slide the air filter into the tray of the chassis.
Step 3 Secure the tray by tightening the retaining screws.
The Cisco 6400 can contain one or two NSP modules, which are located in slots 0A and 0B (in the middle of the chassis). Figure 5-6 shows the NSP faceplate.
| Caution
Removing an active NSP in a redundant configuration causes a switchover. Removing an active NSP in a nonredundant configuration causes a system shutdown. |
To remove an NSP module, follow these steps:
Step 1 Attach a ground strap to your wrist.
Step 2 Unscrew the upper and lower retaining screws.
Step 3 Disconnect any cables connected to the NSP module you are about to remove.
Step 4 Grasp the upper and lower extraction levers. Pull up on the upper lever while pushing down on the lower lever. This action disengages the module from the connectors on the backplane.
Step 5 Slide the NSP module out of the slot.
Step 6 Place the NSP module on an antistatic surface. If it will be out of the chassis for any length of time, put it in a static-shielding bag or in a box lined with antistatic material.
Step 7 Install another NSP module or a blank faceplate in the empty slot.
| Warning Blank faceplates (filler panels) serve three important functions: they prevent exposure to hazardous voltages and currents inside the chassis; they reduce electromagnetic interference (EMI) that might disrupt other equipment; and they direct the flow of cooling air through the chassis. Do not operate the system unless all cards and faceplates are in place. |
The NSP module can be inserted only in slot 0A or 0B. To install an NSP module in the Cisco 6400 chassis, proceed as follows:
Step 1 Remove the blank filler panel from the selected slot, if a blank panel is present.
Step 2 Hold the module vertically, with the NSP faceplate toward you and the backplane connectors away from you. Ensure that the module is right side up by noting the lettering on the faceplate.
Step 3 Carefully align the upper and lower edges of the carrier with the upper and lower guides in the chassis. (See Figure 5-7.)
| Caution To ensure that the NSP module mates properly with all backplane connector pins, the card length and card slots have been designed with very close tolerances. To slide the module into the slot requires gentle pressure with each hand, at the top and bottom of the faceplate. |
Step 4 Gently slide the module into the slot until it makes contact with the backplane.
Step 5 Press the upper lever down and the lower lever up at the same time.
Step 6 Secure the card by tightening the upper and lower retaining screws.
Step 7 Connect the cables.
Step 8 Pull the cables across the wire restraint and bend the restraint upward to trap the cables. (See Figure 5-8.)
Step 9 Route the cables through the cable management bracket, creating a 20-inch (or larger) service loop. (See Figure 5-9.)
Step 10 Install blank filler panels to cover any unused slots. Like cards and modules, each filler panel is held in place by two retaining screws.
There are two PCMCIA slots in the NSP module. To replace a PCMCIA flash disk, follow these steps:
Step 1 Unscrew the locking fastener on the bottom of the PCMCIA slot cover.
Step 2 Lift the cover and press the eject button on the PCMCIA slot for the flash disk you are removing. The disk ejects.
Step 3 Remove the flash disk and insert the new flash disk. Push firmly to seat the flash disk.
Step 4 Close the cover and tighten the locking fastener.
SIMMs are sensitive components that are susceptible to ESD damage. Handle SIMMs by the edges only; avoid touching the memory modules, pins, or traces (the metal "fingers" along the connector edge of the SIMM).
| Caution To upgrade DRAM, you must install identical SIMMs in both DRAM SIMM connectors. |
In a 64-MB DRAM configuration, the two accessible SIMM sockets (U51 and U63) are empty. To upgrade to 128-MB DRAM, you need to purchase an upgrade kit from Cisco Systems and insert the SIMMs into the two empty sockets. (To contact Cisco Systems, see the Note on page 5-1.)
Follow these steps to remove the existing SIMMs:
Step 1 Attach an ESD-preventive wrist strap between you and an unpainted chassis surface.
Step 2 Disconnect the console and auxiliary cables from the NSP module.
Step 3 Loosen the captive installation screws on the NSP module.
Step 4 Place the NSP on an antistatic mat or pad. Position the NSP so that the faceplate is away from you, and the edge connector is toward you.
Step 5 Locate the SIMMs. The DRAM SIMMs occupy sockets U51 and U63. (See Figure 5-10.)
Step 6 Release the spring clips from the SIMM that you wish to remove and lift the SIMM from the socket. (See Figure 5-10.)
Step 7 When both ends of the SIMM are released from the socket, grasp the ends of the SIMM with your thumb and forefinger and pull the SIMM completely out of the socket. Handle the edges of the SIMM only; avoid touching the memory module, pins, or metal traces (fingers) along the socket edge.
Step 8 Place the SIMM in an antistatic bag to protect it from ESD damage.
Step 9 Repeat steps 5 through 8 for the remaining SIMMs, as required for your upgrade.
This completes the SIMM removal procedure. Proceed to the next section to install the new SIMMs.
Follow these steps to replace the SIMMs:
Step 1 Keep the NSP in the same orientation as in the previous procedure (with the handle facing away and the edge connector toward you).
Step 2 Remove a new SIMM from the antistatic bag.
| Caution Handle SIMMs by the card edges only. SIMMs are sensitive components that can be shorted by mishandling. |
Step 3 Hold the SIMM component side up with the connector edge (the metal fingers) closest to you.
Step 4 Hold the sides of the SIMM between your thumb and middle finger, with your forefinger against the far edge, opposite the connector edge. (See Figure 5-10.)
Step 5 Tilt the SIMM to approximately the same angle as the socket, and insert the entire connector edge into the socket. Insert the first SIMM in the socket farther from you.
| Caution When inserting SIMMs, use firm but not excessive pressure. If you damage a socket, you will have to return the NSP to the factory for repair. |
Step 6 Gently push the SIMM into the socket until the spring clips snap over the ends of the SIMM. If necessary, rock the SIMM gently back and forth to seat it properly.
Step 7 Repeat steps 2 through 6 for the remaining SIMM. Insert the second SIMM in the socket closer to you.
Step 8 When both SIMMs are replaced, check all four alignment holes (two on each SIMM) and ensure that each spring retainer is visible. If it is not, the SIMM is not seated properly. If a SIMM appears misaligned, carefully remove it and reseat it in the socket. Push the SIMM firmly back into the socket until the retainer springs snap into place.
The SIMM replacement procedure is now complete.
If the system fails to boot properly, or if the console terminal displays a checksum or memory error, check the following:
If the system fails to restart properly after several attempts, contact a service representative for assistance. Before you contact Cisco Systems, make note of any error messages, unusual LED states, or any other indications that might help identify the problem.
The NRP module can be installed in slots 1 through 8 in the Cisco 6400 chassis. Figure 5-11 shows the NRP faceplate.
To remove the NRP module from the chassis, follow these steps:
Step 1 Attach an ESD-preventive wrist strap.
Step 2 Disconnect any cables connected to the NRP module you are about to remove.
Step 3 Unfasten the upper and lower retaining screws.
Step 4 Grasp the upper and lower extraction levers. Pull up on the upper lever while pushing down on the lower lever. This action disengages the NRP carrier from the connectors on the backplane.
Step 5 Slide the module out of the slot.
Step 6 Place the NRP module on an antistatic surface. If it will be out of the chassis for any length of time, put it in a static-shielding bag or in a box lined with antistatic material.
Step 7 Insert another NRP module or a blank faceplate in the empty slot.
| Warning Blank faceplates (filler panels) serve three important functions: they prevent exposure to hazardous voltages and currents inside the chassis; they reduce electromagnetic interference (EMI) that might disrupt other equipment; and they direct the flow of cooling air through the chassis. Do not operate the system unless all cards and faceplates are in place. |
To install an NRP module in the Cisco 6400 chassis, proceed as follows:
Step 1 Remove the blank filler panel from the selected slot, if a blank panel is present.
Step 2 Hold the NRP module vertically, with the NRP faceplate toward you and the backplane connectors away from you. Ensure that the module is right side up by noting the lettering on the faceplate.
Step 3 Carefully align the upper and lower edges of the NRP carrier with the upper and lower guides in the chassis. Refer to Figure 5-7 for an example of inserting a module in the chassis.
 | Caution To ensure that the NRP module mates properly with all backplane connector pins, the card length and card slots have been designed with very close tolerances. To slide the module into the slot requires gentle pressure with each hand, at the top and bottom of the faceplate. |
Step 4 Gently slide the NRP module into the slot until it makes contact with the backplane.
Step 5 Press the upper lever down and the lower lever up at the same time.
Step 6 Secure the carrier by tightening the upper and lower retaining screws.
Step 7 Connect the cables.
Step 8 Pull the cables across the wire restraint and bend the restraint upward to trap the cables. (See Figure 5-12.)
Step 9 Route the cables through the cable management bracket, creating a 20-inch (or larger) service loop. (See Figure 5-13.)
Step 10 Install blank filler panels to cover any unused slots. Like modules, each filler panel is held in place by two retaining screws.
This section tells how to remove and replace an NRP SIMM module.
SIMMs are sensitive components that are susceptible to ESD damage. Handle SIMMs by the edges only; avoid touching the memory modules, pins, or traces (the metal "fingers" along the connector edge of the SIMM).
Figure 5-14 shows the locations of the DRAM and Flash SIMMs on the NRP. The procedures for removing, installing, and verifying the DRAM and Flash SIMMs are identical.
| Caution To upgrade DRAM, you must install identical SIMMs in both DRAM SIMM connectors. |
The default Flash configuration is 8 MB, but you can upgrade to a 16 MB Flash SIMM. The amount of Flash memory required on the NRP module is determined by the number and sizes of images and configuration files stored in Flash memory.
To upgrade either DRAM or Flash, you need to purchase an upgrade kit from Cisco and replace the current SIMMs. (To contact Cisco Systems, see the Note on page 5-1.)
Follow these steps to remove the SIMM:
Step 1 Attach an ESD-preventive wrist strap between you and an unpainted chassis surface.
Step 2 Disconnect the signal and control cables from the NRP.
Step 3 Loosen the captive installation screws on the NRP module and remove it from the chassis.
Step 4 Place the NRP on an antistatic mat or pad. Position the NRP module so that the faceplate is away from you, and the edge connector is toward you.
Step 5 Locate the SIMMs on the NRP module. (See Figure 5-14.)
Step 6 Release the spring clips from the SIMM that you wish to remove and lift the SIMM from the socket. (See Figure 5-15.)
Step 7 When both ends of the SIMM are released from the socket, grasp the ends of the SIMM with your thumb and forefinger and pull the SIMM completely out of the socket. Handle the edges of the SIMM only; avoid touching the memory module, pins, or metal traces (fingers) along the socket edge.
Step 8 Place the SIMM in an antistatic bag to protect it from ESD damage.
This completes the SIMM removal procedure. Proceed to the next section to install the new SIMMs.
Follow these steps to replace the SIMM:
Step 1 Keep the NRP in the same orientation as in the previous procedure (with the handle facing away and the edge connector toward you).
Step 2 Remove a new SIMM from the antistatic bag.
| Caution Handle SIMMs by the card edges only. SIMMs are sensitive components that can be shorted by mishandling. |
Step 3 Hold the SIMM component side up with the connector edge (the metal fingers) closest to you.
Step 4 Hold the sides of the SIMM between your thumb and middle finger, with your forefinger against the far edge, opposite the connector edge.
Step 5 Tilt the SIMM to approximately the same angle as the socket, and insert the entire connector edge into the socket. If you are installing the DRAM SIMMs, insert the first DRAM SIMM in the socket farther from you.
| Caution When inserting SIMMs, use firm but not excessive pressure. If you damage a socket, you will have to return the NRP to the factory for repair. |
Step 6 Gently push the SIMM into the socket until the spring clips snap over the ends of the SIMM. If necessary, rock the SIMM gently back and forth to seat it properly.
Step 7 Repeat steps 2 through 6 for each remaining new SIMM.
Step 8 For each SIMM you installed, check both alignment holes and ensure that each spring retainer is visible. If it is not, the SIMM is not seated properly. If a SIMM appears misaligned, carefully remove it and reseat it in the socket. Push the SIMM firmly back into the socket until the retainer springs snap into place.
The SIMM replacement procedure is now complete.
If the system fails to boot properly, or if the console terminal displays a checksum or memory error, check the following:
If the system fails to restart properly after several attempts, contact a service representative for assistance. Before you contact Cisco Systems, make note of any error messages, unusual LED states, or any other indications that might help identify the problem. (To contact Cisco Systems, see the Note on page 5-1.)
The Cisco 6400 supports two half-height NLC modules:
To install a half-height NLC module in the Cisco 6400 chassis, you must do the following:
The carrier module can accommodate two half-height NLCs.
Because the NLCs support different media and interface types, configuration commands used with the cards can vary according to type. For complete NLC configuration information, refer to the
Cisco 6400 UAC Software Configuration Guide, Cisco 6400 UAC Command Reference Guide, and Release Notes for Cisco 6400 UAC NSP for Cisco IOS Release 12.0(2)DB.
| Warning Class 1 laser product. |
| Warning
Because invisible radiation may be emitted from the aperture of the port when no fiber cable is connected, avoid exposure to radiation and do not stare into open apertures. |
| Warning
Invisible laser radiation present. |
| Warning Alleviates ja suojalukitus ohitettaessa olet alttiina nãkymãttõmãlle lasersãteilylle. Ãjã katso sãteeseen. |
| Warning Osynlig laserstrålning när denna del är öppen och förregleringen är urkopplad. Rikta inte blicken in mot strålen. |
The full-height carrier module is used to accommodate one or two half-height NLCs. The following procedure tells you how to install a full-height carrier module in the Cisco 6400 chassis:
Step 1 Attach an ESD-preventive wrist strap.
Step 2 Remove the filler panel, if one is present.
Step 3 While holding the carrier module vertically, align the upper and lower edges with the slot and gently slide the carrier module into the slot until it makes contact with the backplane. (See Figure 5-18.)
Step 4 Secure the carrier module by tightening the upper and lower retaining screws.
To install a half-height NLC in the Cisco 6400, follow these steps:
Step 1 Install a full-height NLC carrier in the Cisco 6400 as described in the "Installing a Full-Height NLC Carrier in the Chassis" section.
Step 2 Hold the NLC vertically, with the module faceplate toward you and backplane connectors away from you. Ensure that the card is right side up by noting the lettering of the faceplate.
Step 3 Carefully align the upper and lower edges of the NLC with the upper and lower guides in the full-height carrier. (See Figure 5-19.)
| Caution To ensure that the card mates properly with all backplane connector pins, the card length and card slots have been designed with very close tolerances. To slide the card into the slot requires gentle pressure with each hand, at the top and bottom of the faceplate. |
Step 4 Gently slide the NLC into the carrier module until it makes contact with the backplane.
Step 5 Press the upper lever down and the lower lever up at the same time. (This action electrically connects the card to the backplane.)
Step 6 Secure the carrier module by tightening the upper and lower retaining screws.
Step 7 Install blank filler panels to cover any unused slots. Like cards, each filler panel is held in place by two retaining screws.
Cables are connected differently to each of the NLCs.
The OC-3/STM-1 NLC has two ports for single-mode intermediate reach fiber connection on the front of each NLC. Each port provides an interface to the ATM switching fabric for transmitting and receiving data at rates up to 155 Mbps bidirectionally. Install the fiber optic cables as shown in Figure 5-20.
Figure 5-21 shows suggested cable management for the OC-3/STM-1 fiber optic cable.
The DS3 NLC has two ports that connect to the ATM switching fabric using 75-ohm single or bundled coaxial cables with bayonet-style twist-lock (BNC) connectors attached to the back of the chassis for each DS3 port. (See Figure 5-22.)
| Warning The DS3 ports are not intended to be connected to cables that run outside the building where it is installed. For any connections outside the building, the DS3 ports must be connected to a network termination unit (NTU). NTU devices should comply with appropriate national safety standards such as UL 1950, CSA 950, EN 60950, IEC 950, and AS 3260. |
Use the following procedure to remove a half-height NLC from the Cisco 6400 chassis:
Step 1 Attach an ESD-preventive strap between you and the chassis surface.
Step 2 Remove any connections to the modules. Be sure to cover any fiber optic connections to prevent contamination from moisture or dirt.
Step 3 Loosen the two (top and bottom) Phillips screws securing the NLC metal carrier to the full-height carrier.
Step 4 Grasp the two lever handles on the NLC, and gently pull the handles away from the carrier unit to loosen the unit.
Step 5 Carefully slide the NLC out of the full-height carrier. Avoid damaging the connectors on the rear of the plug-in unit.
Step 6 Place the NLC on an anti-static surface.
The Cisco 6400 supports one full-height NLC module: the OC-12/STM-4 NLC (see Figure 5-23).
The full-height NLC is premounted on its carrier.
| Warning Class 1 laser product. |
| Warning
Because invisible radiation may be emitted from the aperture of the port when no fiber cable is connected, avoid exposure to radiation and do not stare into open apertures. |
| Warning
Invisible laser radiation present. |
| Warning Alleviates ja suojalukitus ohitettaessa olet alttiina nãkymãttõmãlle lasersãteilylle. Ãjã katso sãteeseen. |
| Warning Osynlig laserstrålning när denna del är öppen och förregleringen är urkopplad. Rikta inte blicken in mot strålen. |
To install a full-height NLC in the Cisco 6400, follow these steps:
Step 1 Remove the blank filler panel from the selected slot, if a blank panel is present.
Step 2 Hold the NLC module vertically, with the NLC faceplate toward you and the backplane connectors away from you. Ensure that the module is right side up by noting the lettering on the faceplate.
Step 3 Carefully align the upper and lower edges of the NLC carrier with the upper and lower guides in the chassis. Refer to Figure 5-24 for an example of inserting a module in the chassis.
| Caution To ensure that the NLC module mates properly with all backplane connector pins, the module length and module slots have been designed with very close tolerances. To slide the module into the slot requires gentle pressure with each hand, at the top and bottom of the faceplate. |
Step 4 Gently slide the NLC module into the slot until it makes contact with the backplane.
Step 5 Press the upper lever down and the lower lever up at the same time.
Step 6 Secure the carrier by tightening the upper and lower retaining screws.
Step 7 Connect the cables.
Step 8 Install blank filler panels to cover any unused slots. Like modules, each filler panel is held in place by two retaining screws.
The OC-12/STM-4 NLC has one port for single-mode intermediate reach fiber connection on the front of each NLC. This port provides an interface to the ATM switching fabric for transmitting and receiving data at rates up to 622 Mbps bidirectionally. Install the fiber optic cables as shown in Figure 5-25.
Figure 5-26 shows suggested cable management for the OC-12/STM-4 fiber optic cable.
Use the following procedure to remove a full-height NLC from the Cisco 6400 chassis:
Step 1 Attach an ESD-preventive strap between you and the chassis surface.
Step 2 Disconnect any cables connected to the NLC module you are about to remove.
Step 3 Unfasten the upper and lower retaining screws.
Step 4 Grasp the upper and lower extraction levers. Pull up on the upper lever while pushing down on the lower lever. This action disengages the NLC carrier from the connectors on the backplane.
Step 5 Slide the module out of the slot.
Step 6 Place the NLC module on an antistatic surface. If it will be out of the chassis for any length of time, put it in a static-shielding bag or in a box lined with antistatic material.
Step 7 Insert another NLC module or a blank faceplate in the empty slot.
This section describes procedures for removing and installing a DC power entry module (PEM) plug-in unit in the Cisco 6400 chassis. (See Figure 5-27.)
There are two PEM power bays in the system for redundancy. The PEM power bays are located at the front left side of the chassis. The top bay is wired to power circuit A; the bottom bay is wired to power circuit B. (The circuits are identified at the power terminals on the backplane.)
The PEMs meet critical safety, isolation, and EMC requirements associated with the connection of the CO DC-input power distribution system.
| Warning Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals. |
If you remove a redundant DC PEM, the chassis continues to operate normally. If you plan to remove the only operating PEM from a chassis, you should first power down the Cisco 6400. Refer to the procedure in the "Powering Down the System" section.
Follow these steps to remove a PEM from the Cisco 6400 chassis:
Step 1 Ensure that the circuit breaker on the DC PEM you are removing is turned off.
Step 2 Unscrew the retaining screws on the DC PEM faceplate.
Step 3 Grasp the DC PEM by the handle on the faceplate and pull it out of the chassis.
| Caution Always install a filler panel over an empty PEM power bay to protect the connectors from contamination and ensure proper air flow. |
Figure 5-28 shows a DC PEM unit being installed in the Cisco 6400 chassis. You can insert a PEM unit into the Cisco 6400 without powering down the system.
Use the following procedures to install a DC PEM in the Cisco 6400 chassis:
Step 1 Ensure that the circuit breaker on the DC PEM is turned to OFF.
Step 2 Align the PEM and insert it into the power bay.
Step 3 Firmly push the PEM all the way into the power bay to ensure that the power connectors mate.
Step 4 Tighten the captive screws on the faceplate of the PEM to secure the PEM to the chassis.
Step 5 If the chassis is connected to power, turn the circuit breaker on the DC PEM to ON. The green POWER LED on the faceplate turns on to indicate that the DC PEM is providing power to the chassis. The yellow FAULT LED will go out.
This section describes procedures for removing and installing an AC power entry module (PEM) plug-in unit in the Cisco 6400 chassis. (See Figure 5-29.)
There are two PEM power bays in the system for redundancy. The PEM power bays are located at the front left side of the chassis. The top bay is wired to power circuit A; the bottom bay is wired to power circuit B. (The circuits are identified at the power terminals on the backplane.)
 | Warning Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals. |
If you remove a redundant AC PEM, the chassis continues to operate normally. If you plan to remove the only operating PEM from a chassis, you should first power down the Cisco 6400. Refer to the procedure in the "Powering Down the System" section.
Follow these steps to remove a PEM from the Cisco 6400 chassis:
Step 1 Turn OFF the power enable switch on the AC PEM you are removing.
Step 2 Unplug the AC power cable.
Step 3 Unscrew the retaining screws on the AC PEM faceplate.
Step 4 Grasp the AC PEM by the handle on the faceplate and pull it out of the chassis.
| Caution Always install a filler panel over an empty PEM power bay to protect the connectors from contamination and to ensure proper air flow. |
Figure 5-30 shows an AC PEM unit being installed in the Cisco 6400 chassis. You can insert a PEM unit into the Cisco 6400 without powering down the system.
Use the following procedures to install an AC PEM in the Cisco 6400 chassis:
Step 1 Ensure that the power enable switch on the AC PEM is turned to OFF.
Step 2 Align the PEM and insert it into the power bay.
Step 3 Firmly push the PEM all the way into the power bay to ensure that the power connectors mate.
Step 4 Tighten the captive screws on the faceplate of the PEM to secure the PEM to the chassis.
Step 5 Plug in the AC power cable.
Step 6 Turn the power enable switch on the AC PEM to ON. The green POWER LED on the faceplate turns on to indicate that the AC PEM is providing power to the chassis. The yellow FAULT LED will go out.
Figure 5-31 shows suggested power cord connections for the AC PEM.
This section describes procedures for removing and installing the blower module in the Cisco 6400 chassis. The blower module is located in the top part of the chassis, above the plug-in modules and cards. Figure 5-32 shows the blower module.
Use the following procedure to remove the blower module from the Cisco 6400 chassis:
Step 1 If you are using AC PEMs, remove the AC power cords from the clips on the blower module.
Step 2 Detach the cable management brackets. (See Figure 5-33.)
Step 3 Fold the loaded brackets to either side of the Cisco 6400 chassis, leaving the cables attached. The 20-inch service loop will allow you to pull the cables out of the way of the blower. (See Figure 5-34.)
Step 4 Unfasten the two screws on the front of the blower module. (See Figure 5-35.)
Step 5 Carefully slide the blower out of the chassis.
Step 6 Place the blower module on a flat work surface.
| Caution The Cisco 6400 system will automatically shut down if the blower module is removed for longer than 2 minutes. |
Use the following procedure to replace the blower module:
Step 1 Slide the new blower module in until the rear connector engages. (See Figure 5-36.)
Step 2 Refasten the screws that secure the blower module to the chassis.
Step 3 Reattach the loaded cable brackets, re-establishing the service loops. (See Figure 5-37.)
Step 4 On the front panel of the blower module the FANS OK LED is on and both FAN FAILURE LEDs should be OFF.
Verify that any plug-in module or component has been installed correctly after you have performed a replacement procedure. To verify the installation, check the status of the interfaces as follows:
Posted: Mon Nov 22 16:51:35 PST 1999
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