Motorola MPMC101 Service Manual

XR Series System Chassis Reference Guide XRCHASA/IH1

x Dual 9-, 12-, and 20-slot Chassis...6-9Environmental Monitoring...

5-26Site Preparation and Installation5Figure 5-8. 12- and 20-Slot Chassis Control Cables (with Alarm Board)2070 9706

Cabling5-275Control Cables (Dual 9-Slot System without Alarm Board)Use the following instructions to install the control cables.1. Plug the end of an

5-28Site Preparation and Installation5Control Cables (Dual 9-Slot System with Alarm Board)Refer to Figure 5-9 on page 5-29 while following these preoc

Cabling5-295Figure 5-9. Dual 9-Slot Chassis Control Cables (with Alarm Board)Power Cables (AC Chassis)Use the following instructions to install the p

5-30Site Preparation and Installation54. Plug the power cords into appropriate electrical outlets (if any of the equipment is rack-mounted, the rack m

Cabling5-315Figure 5-10. DC Terminal BlockNote For additional protection if the conditions of the site call for it, you may wish to also use the chas

5-32Site Preparation and Installation5

66-16Chassis OperationsThis chapter describes the controls, indicators, and operating procedures for the system chassis. Only those controls and indic

6-2Chassis Operations6Key Switch ControlA three-position key switch turns the power supply outputs on or off. The | position is “on”; the position is

Controls and Indicators6-36The Reset (▲) position supplies a SYSRESET signal to the backplane to reset the system in the event of a malfunction. Reset

xi Cooling Fan...9-1Removal...

6-4Chassis Operations6chassis backplane, which distributes power to the fans, mass storage drives, and VME card cage.❏ The input power LED (on the fro

Power On/Off Procedures6-56the the limits documented in the IEE Standard for a Versitile Backplane Bus: VME Bus. The maximum current loads per pin for

6-6Chassis Operations62. On the system, verify that the power switch is set to the position (Standby, or “off”).Note If the power switch is set to th

Chassis Cooling6-76Recommended Power-Off ProcedureNote Ensure that proper software shutdown procedures have been followed before you continue.1. Inser

6-8Chassis Operations6the VMEmodules and the drives in the VME card cage. Cooling air is drawn in at the front of the fan module, forced past the VMEm

Chassis Cooling6-96Dual 9-, 12-, and 20-slot ChassisThe VME card cage is cooled by a front plug-in fan module providing front to rear airflow. Dual fa

6-10Chassis Operations6Figure 6-1. Internal View of System (Side View)To ensure adequate cooling:❏ The air space behind the rack must not be blocked❏

Chassis Cooling6-116The system is designed for use in a relatively clean (office or lab) environment. To assure reliable operation in an industrial en

6-12Chassis Operations6Environmental MonitoringAn environmental monitoring function to track enclosure temperatures and operating voltages is incorpor

Environmental Monitoring6-136Temperature Monitoring FunctionThe overtemperature LED on the front panel of the system indicates the presence of excessi

xii

6-14Chassis Operations6Several conditions can trigger the alarm:❏ A failed fan in a warm environment❏ Blocked airflow in or out of the enclosure❏ An a

Environmental Monitoring6-156Overtemperature Warning LEDThe system thermal warning LED, designated with a thermometer symbol, can be activated by:❏ Th

6-16Chassis Operations6

77-17Power Supplies3-Slot Power SupplyDC power for the backplane, fan, and drives is furnished by a UL/CSA/VDE-approved 170W autoranging power supply

7-2Power Supplies7The power supply is mounted in a module next to the card cage. If the power supply fails, the module is replaced as a unit. The powe

3-Slot Power Supply7-37Replacement1. Slide the power supply module carefully into the chassis. Use firm steady pressure to seat the connector properly

7-4Power Supplies7Dual 9-, 12-, and 20-Slot Power SupplyDC power for the backplane, fans, and drives is furnished by a UL/CSA/VDE-approved 700W autora

Dual 9-, 12-, and 20-Slot Power Supply7-57All specifications are applicable under any specified combination of input, output, and environmental condit

7-6Power Supplies7Fast Transient TestThe following power Fast transient pulse parameters, per EN55101-4 does not adversely affect the power supply’s o

Dual 9-, 12-, and 20-Slot Power Supply7-77AC/DC Power Supply OperationWhen one each of an AC input and a DC input supply are installed together, they

xiii FIGURES Figure 2-1. Model XR9103 (Front View)...2-2Figure 2-2. Dual 9-Slot Card Cage (Fr

7-8Power Supplies7+5 Volt RisetimeThe +5 volt output transitions from +2 volts to +4.75 Volts in less than 20 mS.The +5 volt output has a monotonic ri

Dual 9-, 12-, and 20-Slot Power Supply7-97Table 7-4. 700 Watt DC Power Supply Specifications DC Voltage: 36 Vdc to 72 VdcIsolation Voltage: 1500 Vac o

7-10Power Supplies7Output Power700 watts total continuous from all outputs. 850 watts, 30 seconds peak for 300 mS at 10% maximum duty cycle Output Iso

Dual 9-, 12-, and 20-Slot Power Supply7-1172). When one of each of an AC input and a DC input supply are installed in a system, and each has appropria

7-12Power Supplies7Load SharingThe 12- and 20-slot chassis are capable of providing load sharing functions amongst the power supplies. With load shari

Dual 9-, 12-, and 20-Slot Power Supply7-137Removal and ReplacementThe flexibility of the XR system allows a variety of power supply configurations. Us

7-14Power Supplies73. Remove the power supply bezel.4. Loosen the two yellow, captive screws in the upper corners of the power supply (see Figure 7-1

Dual 9-, 12-, and 20-Slot Power Supply7-157– If the power supply is an AC unit, unplug the power cord from the AC outlet and from the back of the XR c

7-16Power Supplies77. When the LED goes out, use a firm, steady pressure to seat the power supply properly.!CautionIf the power supply does not seat s

Dual 9-, 12-, and 20-Slot Power Supply7-1773. When the LED goes out, use a firm, steady pressure to seat the power supply properly.!CautionIf the powe

xiv Figure 7-3. Power Supply Locations...7-19Figure 8-1. Backplane Connectors (Front View

7-18Power Supplies7Figure 7-1. MC1000K-AC700A / MC1000K-DC700A (New) Front PanelFigure 7-2. MC1000K-AC700 / MC1000K-DC700 (Original) Front Panel2091

Dual 9-, 12-, and 20-Slot Power Supply7-197Figure 7-3. Power Supply LocationsGNDModular Card CageFAN FANFANCABLESEXPANSIONEXPANSIONEXPANSIONCPUEXPANS

7-20Power Supplies7

88-18VMEbus BackplaneThis chapter provides information about the VME backplane installed in the system. The backplane performs these two functions❏ In

8-2VMEbus Backplane8Figure 8-1. Backplane Connectors (Front View)11380.00 9511P1/1SP2SP1J1J2 FANPOWERSUPPLY191810191810P1/2 P1/3P2/1 P2/2 P2/3

Description8-38VMEbus Interface SignalsThe signals and pin assignments for VMEbus connectors J1/P1 and J2/P2 are listed in Table 8-1 on page 8-4 and T

8-4VMEbus Backplane8Table 8-1. Pin Assignments for VMEbus Connector J1/P1Pin NumberRow A Signal MnemonicRow B Signal MnemonicRow C Signal Mnemonic1 D

Description8-58Table 8-2. Pin Assignments for VMEbus Connector J2/P2Pin NumberRow A Signal MnemonicRow B Signal MnemonicRow C Signal Mnemonic12345678

8-6VMEbus Backplane8Table 8-3. Pin Assignments for Connector XP2Pin NumberRow A Signal MnemonicRow B Signal MnemonicRow C Signal Mnemonic123456789101

Description8-78Dual 9-, 12-, and 20-Slot BackplaneThe system chassis contains a 20-slot (see Figure 8-2 on page 8-8), 12-slot (see Figure 8-3 on page

xv TABLES Table 2-1. Enclosure Specifications...2-9Table 2-2. Chassis Specifications .

8-8VMEbus Backplane8Figure 8-2. 9-Slot Backplane Connectors (Front View)11032.00 9407FAN1PWR1P1\1FAN2P1\2 P1\3 P1\4 P1\5 P1\6 P1\7 P1\8 P1\9P2\1 P2\2

Description8-98Figure 8-3. 12-Slot Backplane Connectors (Front View)11030.00 9407FAN3FAN2FAN1PWR1PWR2P1\1 P1\2 P1\3 P1\4 P1\5 P1\6 P1\7 P1\8 P1\9P2\

8-10VMEbus Backplane8Figure 8-4. 20-Slot Backplane Connectors (Front View)10968.00 9405P1\ 1 P1\ 2 P1\ 3 P1\ 4 P1\ 5 P1\ 6 P1\ 7 P1\ 8 P1\ 9 P1\10 P

Description8-118Specifications VMEbus Interface SignalsThe signals and pin assignments for VMEbus connectors J1/P1 and J2/P2 are listed in Table 8-5 an

8-12VMEbus Backplane8Table 8-5. Pin Assignments for VMEbus Connector J1/P1Pin NumberRow A Signal MnemonicRow B Signal MnemonicRow C Signal Mnemonic1

Description8-138Table 8-6. Pin Assignments for VMEbus Connector J2/P2 Pin NumberRow A Signal MnemonicRow B Signal MnemonicRow C Signal Mnemonic1 User

8-14VMEbus Backplane8Table 8-7. Pin Assignments for Connector XP2 Pin NumberRow A Signal MnemonicRow B Signal MnemonicRow C Signal Mnemonic1 User I/O

Features8-158FeaturesSignal Line TerminationTo prevent signal reflections, most signal lines not autojumpered are terminated with 470-ohm (pull down)

8-16VMEbus Backplane8VMEbus InterconnectivityThe slots of the backplane are interconnected in accordance with the VME specification, with exception of

99-19Field Replacable UnitsThis chapter contains procedures for replacing the various Field Replacable Units (FRUs) in the XR series chassis.For the 3

xvi

9-2Field Replacable Units9– If the power supply is a DC unit, turn off the –24/–48Vdc power source and unplug the DC connector from the power supply i

3-Slot Chassis9-393 1/2-Inch Drive ModuleThe backplane of the system accommodates up to two 3 1/2-inch half-height storage devices in the drive bays l

9-4Field Replacable Units9Replacement1. Ensure that power to the system is set to the position (Standby) and that the system is disconnected from the

Dual 9-, 12-, and 20-Slot Chassis9-59Dual 9-, 12-, and 20-Slot ChassisControl BoardThe control board assembly controls the application of power to the

9-6Field Replacable Units9Replacement1. Ensure that the affected system is disconnected from the AC or DC power source.!CautionTo ensure a good connec

Dual 9-, 12-, and 20-Slot Chassis9-79Figure 9-1. Control Board Removal11059.00 9409J311041.00 9408

9-8Field Replacable Units9Fan Tray Removal/ReplacementThree DC-powered fans (four fans in the dual 9-slot chassis) provide forced-air cooling for the

Dual 9-, 12-, and 20-Slot Chassis9-99Figure 9-2. Fans and Power SupplyMODULAR CARD CAGEESD BOND POINTEXPANSIONCPUCABLESEXPANSIONEXPANSIONEXPANSIONEXP

9-10Field Replacable Units912-Slot Chassis SCSI DriveThe backplane of the 12-slot system accommodates up to five 5 1/4-inch half-height storage device

Dual 9-, 12-, and 20-Slot Chassis9-1192. Perform an operating system shutdown. Turn the AC or DC power off and remove the AC cord or DC power lines fr

1 1-1 1Introduction About the XR Series Systems The XR Series Systems are based on the VMEbus backplane architecture and the Modular Chassis family o

9-12Field Replacable Units9Removal1. Attach an ESD strap to your wrist. Attach the other end of the ESD strap to the chassis as a ground. The ESD stra

IndexIN-1Numerics12-slot SystemOriginal XR Chassis 2-520-Slot SystemExtended XR Chassis 3-4Original XR Chassis 2-73-Slot SystemOriginal XR Chassis

IndexIN-2INDEXExtended XR Chassis 3-120-Slot System 3-4Chassis Specifications 3-6Dual 9-Slot System 3-2Front Bezel Removal 3-8Front Bezel Replace

IndexIN-3INDEXpower supply module 4-18, 7-1, 7-2, 7-4publicationsrelated 1-4Rrack configurationsystem 5-8rack mountingprocedures 5-8rack systemcoo

IndexIN-4INDEX

® ™ ® ™ XR Series System Chassis Reference Guide ® ™ XR Series SystemChassis Reference Guide34 pages1/8” spine36 - 84 pag

1-2Introduction1 ❏ Ease-of-Maintenance The XR family of systems provides:– Easy access to all major components for removal and replacement.– Front ac

About this Guide1-31 About this Guide This guide is directed toward the person who needs advanced system operational information. The guide presents

Notice While reasonable efforts have been made to assure the accuracy of this document, Motorola, Inc. assumes no liability resulting from any omissi

1-4Introduction1 Related Documentation Hardware components are described in the following manuals. If not shipped with this product, they may be purc

Related Documentation1-51 PPC1Bug Diagnostics Manual PPC1DIAA/UMMVME332XT Intelligent Communication Controller User’s Manual MVME332XTMVME332XT Intel

1-6Introduction1

2 2-1 2Original XR Chassis Chassis Overview The original style of the XR system chassis is available in the following configurations: ❏ 3-Slot ❏ Dual

2-2Original XR Chassis2 Figure 2-1. Model XR9103 (Front View) Dual 9-slot System The Model XR9209 dual 9-slot system (see Figure 2-2 on page 2-4) is

Chassis Overview2-32 module for industrial and commercial environments. Each system in a Model XR9109 or XR9209 is configured with its own power modu

2-4Original XR Chassis2 Figure 2-2. Dual 9-Slot Card Cage (Front View, without bezel)11028.00 9407 (2-3)MODULAR CARD CAGECPUCABLESEXPANSIONEXPANSION

Chassis Overview2-52 12-slot System The Model XR9112 12-slot system (see Figure 2-3 on page 2-6) is designed for telecom applications requiring 12 VM

2-6Original XR Chassis2 Figure 2-3. 12-Slot Card Cage (Front View, without bezel)DISK/TAPEMODULAR CARD CAGEESD BOND POINT11028.00 9407(3-3)FAN FANFA

Chassis Overview2-7220-slot SystemThe Model XR9120 20-slot system (see Figure 2-4 on page 2-8) is designed for telecom applications requiring 20 VME s

Preface The XR Series System Reference Guide is written for the person who needs advanced operational information about the XR system. The manual pre

2-8Original XR Chassis2Figure 2-4. 20-Slot Card Cage (Front View, without bezel)MODULAR CARD CAGEESD BOND POINTEXPANSIONCPUCABLESEXPANSIONEXPANSIONEX

Chassis Specifications2-92Chassis SpecificationsThe following sections list physical, environmental, and electrical specifications for the base system,

2-10Original XR Chassis2Dual 9-, 12-, and 20-Slot ChassisTable 2-2. Chassis Specifications Characteristics SpecificationsPhysical Dimensions(with front

Chassis Specifications2-112Note Temperature and humidity limits are determined primarily by the type of tape and disk media that you expect to install

2-12Original XR Chassis2Chassis UseFront Bezel RemovalThe front bezel is a requirement for complete RFI shielding. The bezel is latched on both sides.

Chassis Use2-132Figure 2-5. Removing the Front Bezel (Dual 9-, 12-, and 20-Slot Systems)11049.00 9408132

2-14Original XR Chassis2Figure 2-6. Removing the Front Bezel (3-Slot System)Front Bezel Replacement1. (For 9U bezels): Position the ball stud catches

Chassis Use2-152Side Panel/Pedestal Cover Removal and ReplacementThe pedestal configuration incorporates side panels for the various system enclosures

2-16Original XR Chassis2Figure 2-7. Pedestal Cover, Bezels, and Side PanelsMODULAR DRIVEENCLOSUREMODULAR CARDCAGE BEZELMODULAR POWERSUPPLY BEZELPEDES

Chassis Use2-172Side Panel RemovalThe suggested procedure for removing pedestal side panel assemblies is as follows:1. Remove the front bezel.2. Unloc

Safety SummarySafety Depends On You The following general safety precautions must be observed during all phases of operation, service, andrepair of t

2-18Original XR Chassis2Figure 2-8. Side Panel Removal11064.00 9409

Chassis Use2-192Side Panel ReplacementThe suggested procedure for replacing pedestal side panel assemblies is as follows:1. Engage the slots of the pa

2-20Original XR Chassis2

33-13Extended XR ChassisChassis OverviewThe Extended Chassis is based on the Original Chassis design. It uses the same backplane, power supplies, and

3-2Extended XR Chassis3Dual 9-slot SystemThe Model XR9209A dual 9-slot system (see Figure 3-1 on page 3-3) is designed for telecom applications requir

Chassis Overview3-33Figure 3-1. Dual 9-Slot Card Cage (Front View, without bezel)11028.00 9407 (2-3)MODULAR CARD CAGECPUCABLESEXPANSIONEXPANSIONEXPAN

3-4Extended XR Chassis320-slot SystemThe Model XR9120A 20-slot system (see Figure 3-2 on page 3-5) is designed for telecom applications requiring 20 V

Chassis Overview3-53Figure 3-2. 20-Slot Card Cage (Front View, without bezel)MODULAR CARD CAGEESD BOND POINTEXPANSIONCPUCABLESEXPANSIONEXPANSIONEXPAN

3-6Extended XR Chassis3Chassis SpecificationsTable 3-1. Chassis Specifications Characteristics SpecificationsPhysical Dimensions(with front bezel)-- Sys

Chassis Specifications3-73Safety(Standards for safety of information technology equipment, including electrical business equipment)UL1950CSA C22.2/950

!WARNING This equipment has been tested and found to comply with thelimits for a Class A digital device, pursuant to part 15 of the FCCRules. These li

3-8Extended XR Chassis3Chassis UseNote You will need a 4mm Allen wrench to perform these procedures.Front Bezel RemovalThe front bezel is a requiremen

Chassis Use3-93Figure 3-3. Removing the 9U Front Bezel2119 9711

3-10Extended XR Chassis3Figure 3-4. Removing the 3U Front Bezel (Power Supply Bezel)2121 9711

Chassis Use3-113Front Bezel Replacement1. (For 9U bezels): Slide the guide catches at the lower corners of the bezel over the guides on the enclosure

3-12Extended XR Chassis3

44-14SCSI Device Storage ModuleThis chapter provides a brief overview of the SCSI Device Storage module. For more information about this device, pleas

4-2SCSI Device Storage Module4Power SupplyThe power is supplied to the SCSI Device Storage Module in one of three ways:❏ System Power❏ AC Power Supply

Overview4-34Environmental MonitoringThe SCSI Device Storage Module is equipped with an environmental monitoring function. This functions monitors the

4-4SCSI Device Storage Module4SpecificationsThe following tables provide the specifications for the various components of the SCSI Device Storage Modul

Specifications4-54Extended ChassisTable 4-2. SCSI Device Storage Module SpecificationsCharacteristics SpecificationsPhysical Characteristics:HeightWidt

CE Notice (European Community)Marking a system with the “ “ symbol indicates compliance of thatMotorola system to the EMC and Low Voltage direc

4-6SCSI Device Storage Module4Power SupplyTable 4-3. Power Supply SpecificationsCharacteristics SpecificationsPhysical Characteristics:HeightWidthLengt

Specifications4-74BackplaneThe following table provides the specifications for both the single-ended and the differential SCSI backplane options.Table

4-8SCSI Device Storage Module4SCSI Device Storage Module ProceduresNotes The Rack/Mast and Pedestal mounting procedures are the same as those for the

SCSI Device Storage Module Procedures4-94Figure 4-1. Bezel Removal11051.00 9408LATCH BUTTONS(1 EACH SIDE)

4-10SCSI Device Storage Module4Front Bezel Removal and Replacement (Extended Chassis)The bezel is required for complete RFI shielding.Note You need a

SCSI Device Storage Module Procedures4-114Figure 4-2. SCSI Device Storage Module Front Bezel RemovalRemovable Media Access Plate RemovalIf you have r

4-12SCSI Device Storage Module4Removable Media Access Plate ReplacementAfter removing a removable media drive, or replacing it with a hard drive, it i

SCSI Device Storage Module Procedures4-134SCSI Device Storage Module Removal and ReplacementThe SCSI Device Storage Module, if present, is mounted on

4-14SCSI Device Storage Module4Figure 4-4. Removing SCSI Device Storage Module (System Powered)Module Replacement1. Ensure that all chassis power is

SCSI Device Storage Module Procedures4-1542. Using the guide pins on the bottom of the peripheral expansion chassis for alignment, lower the expansion

vii Contents Chapter 1 Introduction About the XR Series Systems...1-1About

4-16SCSI Device Storage Module4SCSI Drive Removal and ReplacementThe SCSI peripheral storage enclosure contains up to four half-height storage devices

SCSI Device Storage Module Procedures4-1745. Reinstall the front bezel, if the installation includes one.6. Reconnect the system to the AC or DC power

4-18SCSI Device Storage Module4Power Supply Removal and ReplacementThe power supply module (Figure 4-6 on page 4-19) is installed at the right side of

SCSI Device Storage Module Procedures4-1945. Slide the module out.Figure 4-6. Power Supply RemovalReplacement1. Slide the power supply module careful

4-20SCSI Device Storage Module4Cooling Fan Removal and ReplacementThe DC-powered fan mounted on the power supply module provides forced-air cooling fo

55-15Site Preparation and InstallationSetting up the proper working environment for computer equipment can greatly increase its reliability and utilit

5-2Site Preparation and Installation5Weight DistributionTo avoid hazards arising from uneven mechanical loading of the rack, plan the installation so

Power Requirements5-35Laser printers and some other devices cause periodic short duration heavy loads that are not reflected in their ampere ratings.

5-4Site Preparation and Installation5A second type of UPS is called a “standby” UPS, or SPS. This device switches to a battery system if power fails.

Power Requirements5-55The system is designed to operate in an area with 10% to 80% non-condensing relative humidity. A dry area (below 20% relative hu

viii Chapter 4 SCSI Device Storage Module Overview...

5-6Site Preparation and Installation5Installation OptionsA system can be either rack-mounted or set up in a floor-standing pedestal configuration (dua

Installation Options5-75Figure 5-1. Pedestal Configuration SystemMODULAR DRIVEENCLOSURE9U MODULARMODULAR POWERSUPPLYPEDESTAL BASEPEDESTAL SIDEPANELPED

5-8Site Preparation and Installation5Rack System InstallationThe rack system can be installed in any standard 19-inch or 23-inch rack. The advantage o

Installation Options5-95Figure 5-2. Mounting Flange Location for the 3-Slot ChassisFOR MOUNTING FLANGESOPTIONAL CENTER LOCATION11304.00 9601 (3-1)

5-10Site Preparation and Installation5Figure 5-3. Mounting Flange Locations for the Dual 9-, 12-, and 20-Slot ChassisFOR 19-INCH INSTALLATIONSFOR 23-

Installation Options5-115The next two steps are a two-person operation. It may be desirable to remove the power supply module beforehand to make the c

5-12Site Preparation and Installation5Figure 5-4. Rack Configuration System11035.00 94073U FILLERPANELS3U MODULARDRIVE ENCLOSURE9U MODULARCARD CAGE3U

Cabling5-135CablingAfter you have completed the rack installation or otherwise situated the system and associated equipment, proceed as follows to cab

5-14Site Preparation and Installation5❏ Provision for up to 100 transceivers (depending on cable length), via annular rings spaced at intervals of 2.5

Cabling5-155❏ Do not lay signal cables outside buildings without protection from lightning and weather.❏ Use the shortest possible cable between the p

ix Power Requirements...5-2Guidelines for Using Branch Circu

5-16Site Preparation and Installation5❏ Firmly secure all interface cable connectors by tightening all associated hardware.❏ Install and lock the fron

Cabling5-175Figure 5-5. 3-Slot Chassis Control Cables11408.00 9602ENVIRONMENTALMONITORCABLESCSI CABLE

5-18Site Preparation and Installation5Data/Control Cables (with Alarm Board)Refer to Figure 5-6 on page 5-19 while following these procedures.1. Plug

Cabling5-195Figure 5-6. 3-Slot Chassis Control Cables (with Alarm Board)2071 9706ENVIRONMENTALMONITORCABLESSCSI CABLES

5-20Site Preparation and Installation5Environmental Monitor CablesDepending on whether your installation includes a SCSI Device Storage Module and/or

Cabling5-2152. Guide the free end of a DC power cable, with about 1/2 inch of insulation stripped from the wires, to the terminal block supplied with

5-22Site Preparation and Installation54. Plug the assembled connector into the DC power inlet located on the back panel of the system.5. If there is o

Cabling5-235Dual 9-, 12-, and 20-Slot Chassis CablingControl Cables (12- and 20-Slot Systems without Alarm Board)Use the following instructions to ins

5-24Site Preparation and Installation5Figure 5-7. SCSI and Environmental Monitor Connections11063.00 9409

Cabling5-255Control Cables (12- and 20-Slot Systems with Alarm Board)Refer to Figure 5-8 on page 5-26 while following these instructions.1. If the cha