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1. Figure 2 Power is removed from the Modulus 21 and the devices in it From the front of the Modulus 21 slide a product card into its labelled slot and seat it in its top and bottom clips Figure 3 Repeat for each product card Product cards are re installed in Modulus 21 From the back of the Modulus 21 connect cables to backplane s according to their labelled locations Cables are reconnected Plug the AC power cable into the Modulus 21 Power is supplied to the Modulus 21 and the devices connected to it Set a multi meter to a DC voltage setting On the PDU measure the voltage between pairs of connector pins Figure 5 I Voltages should match those in Table 2 If any voltage reading is incorrect immediately disconnect the AC power cord Ensure that the power supplies are seated correctly remove the backplane s as explained above and carefully straighten any bent pins Repeat Step 3 If you cannot resolve the problem contact Motorola Customer Support If all voltages are correct the product cards are installed correctly Returning a PDU to Motorola ISG This section explains how to prepare a PDU for return to Motorola ISG Returning a PDU to Motorola ISG Part No 09564 2 Rev A October 1997 Page 16 of 16 Step Action Result 1 Attach the following information to the PDU e RMA 062095000 e Subsidiary name and lo
2. enclosure is heavy To avoid injury two people should remove it Removing a Modulus 21 Enclosure from a Rack Step Action Result 1 Ensure that the AC power cable is disconnected from the PDU Figure 5 A Power is removed from the Modulus 21 and the devices in it A Position one person in front of the Modulus 21 and one at the back Hold the Modulus 21 in place in the rack while removing the rack mount bracket screws Figure 1 Carefully slide the Modulus 21 out of the front of the rack Modulus 21 is removed from rack Part No 09564 2 Rev A October 1997 Page 8 of 16 Removing Backplane s and the PDU from a Modulus 21 This section explains how to remove backplanes and the PDU from a Modulus 21 Removing Product Backplanes and the PDU From a Modulus 21 Enclosure Step Action Result 1 Ensure that you are wearing a grounding wrist strap and that the AC power cable is disconnected from the PDU Figure 5 A Any electrostatic energy is discharged from you Power is removed from the Modulus 21 and the devices in it From the back of the Modulus 21 loosen a backplane s top and bottom screws Figure 5 B Push the backplane vertically very slightly to disconnect it from the power distribution connector Figure 5 C Tilt the top of the backplane away from the Modulus 21 Figure 5 D and remove it Put the backplane in an anti static
3. Bottom Clips Lock Figure 3 Removing Installing Product Cards in Modulus 21 Slots Part No 09564 2 Rev A October 1997 Page 6 of 16 Removing Power Supply Modules from a Modulus 21 Overview Removing a Power Supply Module From a Modulus 21 This section explains how to remove a power supply module from a Modulus 21 Step Action Result 1 Ensure that you are wearing a Any electrostatic energy is grounding wrist strap and that the discharged from you AC power cable is disconnected power is removed from the from the PDU Figure 5 A Modulus 21 and the devices in it 2 With the Modulus 21 front door Modulus 21 front door is removed open squeeze the two front door hinge pins Figure 1 toward each other until the pins are free Remove the front door 3 Insert a flat blade screwdriver into each of a power supply s two locking tabs Figure 4 A Gently turn the screwdriver until the tab clicks Pull the power supply module Figure 4 B from the Modulus 21 4 Repeat for each power supply Power supply modules are module removed from the Modulus 21 Modulus 21 Front B Power Supply Modules A Locking Tab Locations Figure 4 Removing Power Supply Modules Fro 3 odulus 21 Part No 09564 2 Rev A October 1997 Page 7 of 16 Removing a Modulus 21 Enclosure From a Rack This section explains how to remove the Modulus 21 enclosure from a rack Warning The Modulus 21
4. Overview Introduction Additional Information In This Manual PDU Kit Contents Part No 09564 2 Rev A October 1997 Page 1 of 16 MODULUS 21 Power Distribution Unit PDU Replacement This notice explains how to replace the AC Power Distribution Unit PDU also known as a Power Distribution Assembly PDA in a Modulus 21 enclosure This notice assumes familiarity with Modulus 21 mounted products and the Modulus 21 itself Your configuration may vary from the examples shown here For details refer to your device documentation and to the Modulus 9 and 21 Installation and Operation Guide Part No 09564 Topic See Page Modulus 21 Enclosure Overview o c ccc cceceeceseseeseeeeseesececseeeesesseescsseesnees 3 Removing Product Cards from a Modulus 21 oo eee eseeseceseceseeeeeeeneeeneees 4 Removing Power Supply Modules from a Modulus 21 cess eeeeseeeneees 6 Removing a Modulus 21 Enclosure From a Rack n se 7 Removing Backplane s and the PDU from a Modulus 21 oo eee 8 Replacing a PDU and Backplane s in a Modulus 21 onses 10 Replacing a Modulus 21 in a Rack oe eeceeceseeeneeeeeceeeeceeeeeaeeeneeeneees 11 Checking Modulus 21 Resistance ccc ceesscesecssceseeeseeeseeeneceeeceseeeaeeeneeeneees 12 Re installing Power Supply Modules in a Modulus 21 0 eeeeseeneees 13 Checking Modulus 21 Voltage 0 eee eccecscsseceseceeeeeeseececeeceseeeaeeeneeeneees 14 Re installing Product Cards in a Modulus 21 ooo ese
5. U p n 65524 G01 Artwork Rev B Assembly Rev C Step Action Result 1 Ensure that you are wearing a grounding wrist strap and that the AC power cable Figure 5 A is disconnected from the PDU Any electrostatic energy is discharged from you Power is removed from the Modulus 21 and the devices in it From the back of the Modulus 21 slide the PDU Figure 5 G into its slots then press down on it so that all four locking tabs Figure 5 F lock PDU is installed in the Modulus 21 Slide the sheetmetal into place while pressing its two retainers Figure 2 C with your thumbs Install the sheetmetal screws Figure 5 E there are six of one size and two of another Sheetmetal is installed in the Modulus 21 Re install a backplane by pressing it down and into the power distribution connectors Figure 5 C Ensure that the backplane is seated firmly in the connectors Repeat for each backplane Backplanes are re installed in the Modulus 21 Replace any back filler panels in unused slots Figure 5 H Tighten all backplane screws Attach the PDU upgrade label Figure 5 K to the Modulus 21 sheetmetal Figure 5 J Modulus 21 is labelled to confirm PDU upgrade Replacing a Modulus 21 in a Rack Part No 09564 2 Rev A October 1997 Page 11 of 16 This section explains how to install a Modulus 21 in a rack Warning The Modulus 21 en
6. bag Repeat for each backplane Backplanes are removed from the enclosure Remove any back filler panels from unused slots From the back of the Modulus 21 remove the sheetmetal screws Figure 5 E there are six of one size and two of another Remove the sheetmetal Sheetmetal is removed from the Modulus 21 Press forward on each of the four PDU locking tabs Figure 5 F to unlock them Pull the PDU Figure 5 G out Set it aside for return to Motorola ISG as described in a later section PDU is removed from the Modulus 21 Part No 09564 2 Rev A October 1997 Removing Backplane s and the PDU from a Modulus 21 Page 9 of 16 B Backplane D Modulus 21 Enclosure Back G PDU I Test Connectors E Sheetmetal Screw J T Sheetmetal a XN L Modulus 21 Serial Number O Label 3 AP AC Power is removed from PDU S Slots F PDU Locking Tabs AC Power connector aperture Power Distribution Connector Avoid Bending These Male Pins PDU Upgrade Label Figure 5 Removing Backplane s and PDU from a Modulus 21 Part No 09564 2 Rev A October 1997 Page 10 of 16 Replacing a PDU and Backplane s in a Modulus 21 This section explains how to install a PDU and backplane s in a Modulus 21 Replacing a Power Distribution Unit PDU and Backplane s in a Modulus 21 PD
7. cation e Modulus 21 serial number e Customer name PDU is identified for proper credit to your account Put the PDU in a poly bag and carefully pack it in the package that the new PDU came in Mark the Equipment Return Authorization ERA number on the outside of the package The ERA is on the replacement PDU order acknowledgment If you are in the U S A ship the PDU to Modulus Project Motorola ISG 11 A Norfolk Street Mansfield MA 02048 USA Attn Roy Savill If you are outside the U S A ship the PDU to Modulus Project Motorola ISG Church Road Lowfield Heath Crawley West Sussex RH11 OPQ Great Britain Motorola ISG recommends that you use a delivery company that offers proof of delivery Return multiple PDU s in batches one per month The PDU replacement procedure is complete PostScript error nostringval nostringval
8. closure is heavy To avoid injury two people should install it Installing a Modulus 21 Enclosure in a Rack Step Action Result 1 Position one person in front of the Modulus 21 and one at the back Carefully slide the Modulus 21 into the front of the rack Hold the Modulus 21 in place in the rack while installing the screws in the rack mount brackets Figure 1 Modulus 21 enclosure is installed in the rack Overview ones pied 21 Resistance Step Part No 09564 2 Rev A October 1997 Page 12 of 16 This section explains how to check the Modulus 21 electrical resistance Action Result 1 Ensure that you are wearing a Any electrostatic energy is grounding wrist strap and that the discharged from you AC power cable is disconnected Power is removed from the from the PDU Figure 5 A Modulus 21 and the devices in it 2 Set a multi meter to a minimum e If any pair registers resistance 20 Q range On the PDU measure the resistance between pairs of test connector pins Figure 5 I Readings should be Q as shown in Table 2 the backplane connectors are short circuited Remove the product backplane as explained above and carefully straighten any bent pins on the PDU If a pair still registers resistance repeat the entire PDU replacement procedure If you cannot resolve the problem contact Motorola Customer Suppor
9. discharged from you 2 Connect the AC power cable to the PDU Figure 5 A Power is supplied to the Modulus 21 and the devices in it 3 Set a multi meter to a DC voltage setting On the PDU measure the voltage between pairs of connector pins Figure 5 I Voltages should match those in Table 2 e If any voltage reading is incorrect immediately disconnect the AC power cord Ensure that the power supplies are seated correctly remove the backplane s as explained above and carefully straighten any bent pins Repeat Step 3 If you cannot resolve the problem contact Motorola Customer Support If all voltages are correct the PDU is installed correctly Table 2 Voltage Check Pin Connections Measure From This Pin To This Pin To Obtain Number Description Number Description This Reading 1 Ground 4 5V 5V 1 Ground 5 12V 12V 1 Ground 6 12V 12V Re installing Product Cards in a Modulus 21 Caution Before you begin unplug the AC power cable from the power source Part No 09564 2 Rev A October 1997 Page 15 of 16 Card Installation Installing Product Cards in a Modulus 21 Enclosure Re install product cards and filler panels in the Modulus 21 enclosure as follows Step Action Result Ensure that you are wearing a grounding wrist strap Any electrostatic energy is discharged from you Disconnect the AC power cable from the Modulus 21
10. e you begin unplug the AC power cord from the power source Removing Product Cards from a Modulus 21 Enclosure Step Action Result 1 Attach a grounding wrist strap to yourself and a grounded object Any electrostatic energy is discharged from you a Unplug both ends of the AC power cable Figure 2 A from the PDU Power is removed from the Modulus 21 and the devices in it o Open the Modulus 21 front door From the front and back of the Modulus 21 label each product card and cable connector Label each backplane s location Card cable and backplane locations and connections are labelled Detach the cable connectors from the backplane s Figure 5 B Cables are disconnected o Remove a product card Figure 3 A by pressing its top and bottom clips apart and pulling it from the slot Put the card in an anti static bag Repeat for each product card Cards are removed from Modulus 21 Cards are protected from damage Part No 09564 2 Rev A October 1997 Removing Product Cards from a Modulus 21 Page 5 of 16 PDU Within Modulus 21 Back Cc Sheetmetal Retainers AC Power Connector on PDU B Modulus 21 Sheetmetal Modulus 21 Front A Product N Card i 3 yi 7 r Do uo SE Slide Card y Into Slot Slide Card J y Out of Slot N Unlock SJ Front Filler Panel Card
11. eeceeeeeeeceeeeeeeaeees 15 Returning a PDU to Motorola ISG oo cee ec eccceceeeceeeeeceeeeeaeceeaeeceaeeceteeeeaes 16 The PDU replacement kit includes e PDU hardware e PDU replacement label e This document If your kit is incomplete contact Motorola ISG Customer Support 09564 2 A Overview Modulus 21 Serial Numbers Affected 4 Tools Needed Part No 09564 2 Rev A October 1997 Page 2 of 16 This notice refers only to replacing PDU s in Modulus 21 s whose serial number is one of the following For serial number label location refer to Figure 5 L e 3494 e 5043 e 285000 330000 range e 549998 600000 e 890000 893000 e 915000 999999 e 2026000 9000000 e 9400000 32220000 e 6009568007 e 10052388 8 e 890000A 999999A e 890000B 999999B e 890000D 999999D e 3150000A 3300000A e 3100000B 3300000B e 3100000R 3300000R e 890100DM 890200DM Warning Only qualified Service personnel should perform this procedure Use of the procedure by unqualified personnel could result in personal injury or equipment damage which could jeopardize your warranty and maintenance agreement The following tools and supplies are required e Grounding wrist strap e Labels e Flat and Phillips head screwdrivers e Anti static plastic bags hi i e Multi meter Part No 09564 2 Rev A October 1997 Page 3 of 16 Modulus 21 Enclosure Overview Overview P
12. roduct Cards Enclosures Backplanes Equipment Racks This section explains how Motorola products are contained in Modulus 21 enclosures Figure 1 and equipment racks Front Door Product Cards Within Rack Mount Bracket Front Door Hinge gt Back Pin Locations Front Door Latch Location Figure 1 Modulus 21 Enclosure A Modulus 21 enclosure provides common housing and power for plug in card versions of Motorola products such as 35XX DSU CSUs 326X dial modems 33XX leased line modems and 6500 nodes The Modulus 21 enclosure accommodates product cards in its 21 slots It can hold two or three independent power supply modules and one power distribution unit PDU The Modulus 21 can contain one or more product specific backplanes to carry the signal and data flow between product cards and the external environment and to provide cable connections to product cards A standard 19 inch equipment rack can hold Modulus 21 s and other units Removing Product Cards from a Modulus 21 Part No 09564 2 Rev A October 1997 Page 4 of 16 Overview This section explains how to remove product cards from a Modulus 21 enclosure Card Removal m IMPORTANT Remove product cards and filler panels from the Modulus 21 enclosure as follows This procedure removes power from all devices in the Modulus 21 Before you begin plan for the effects on your network functions and users A Warning Befor
13. t If all pairs register as open circuits the backplane circuits are OK Table 1 Resistance Check Pin Connections Measure From This Pin To This Pin To Obtain Number Description Number Description This Reading 1 Ground 4 5V oo Q 1 Ground 5 12V oo Q 1 Ground 6 12V oo Q 4 5V 5 12V co Q 4 5V 6 12V oo Q 5 12V 6 12V oo Q Part No 09564 2 Rev A October 1997 Page 13 of 16 ling Power Supply Modules in a Modulus 21 Supply Modules in a Modulus 21 Enclosure This section explains how to re install a power supply module in a Modulus 21 Action Result Ensure that you are wearing a grounding wrist strap and that the AC power cable is disconnected from the PDU Figure 5 A Any electrostatic energy is discharged from you Power is removed from the Modulus 21 and the devices in it Carefully slide a power supply module Figure 4 B into the front of the Modulus 21 The tabs lock in place Figure 4 A Re installing Overview Installin Step 1 2 3 Repeat for each power supply module Power supply modules are replaced in the Modulus 21 Part No 09564 2 Rev A October 1997 Page 14 of 16 Overview This section explains how to check the Modulus 21 electrical voltage ones Atacs 21 Voltage Step Action Result 1 Ensure that you are wearing a Any electrostatic energy is grounding wrist strap

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