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Digital Equipment VAX 4000 Maintenance Manual

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VAX 4000
BA42B Enclosure Maintenance
Order Number: EK–472AB–MG. B01
August 1994
This manual provides reference, installation, and maintenance information
for the BA42B Enclosure used with the VAX 4000 Model 100/100A/105A
systems.
Digital Equipment Corporation
Maynard, Massachusetts

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Summary of Contents for Digital Equipment VAX 4000

  • Page 1 VAX 4000 BA42B Enclosure Maintenance Order Number: EK–472AB–MG. B01 August 1994 This manual provides reference, installation, and maintenance information for the BA42B Enclosure used with the VAX 4000 Model 100/100A/105A systems. Digital Equipment Corporation Maynard, Massachusetts...
  • Page 2 August, 1994 Digital Equipment Corporation makes no representations that the use of its products in the manner described in this publication will not infringe on existing or future patent rights, nor do the descriptions contained in this publication imply the granting of licenses to make, use, or sell equipment or software in accordance with the description.

  • Page 3: Table Of Contents

    Installing the BA42B System ......2–7 Installing a BA42B-Based VAX 4000 Model 100 ..2.3.1 2–7...
  • Page 4 Turning On the System ......2.3.1.7 2–16 Installing a BA42B-Based VAX 4000 Model 100A/105A ..2.3.2 2–17 Identifying the Ports and Connectors on the System .
  • Page 5 Separating the RRD42 CD–ROM Drive from the Mounting 3.9.1 Bracket ......... 3–39 Setting the SCSI ID on the Replacement RRD42 CD–ROM 3.9.2...
  • Page 6 Connecting the Standard Ethernet Loopback Connector to 2–12 the VAX 4000 Models 100A/105A ..... . 2–22 Connecting the SCSI Terminator ..... .
  • Page 7 Turning On the System ......2–16 2–26 Major FRUs in the BA42B Enclosure ....3–1 3–4 Removing the Enclosure Cover .
  • Page 8 RRD42 SCSI ID Jumper Wire Locations ....3–27 3–42 Removing the RRD43 CD–ROM Drive ....3–28 3–44 Separating the Mounting Bracket from the RRD43 CD–ROM...
  • Page 9 RF31T/RF35/RF36 DSSI ID Jumper Wire Combinations ..3–2 3–36 Asynchronous Port A and Port B Pin Specifications for the A–1 Eight-Data and 16-Data Line Options ....A–3 Asynchronous Port A and Port B Pin Specifications for the A–2...

  • Page 11: Preface

    Preface This manual provides the information that you will need to maintain the BA42B Enclosure when used with the VAX 4000 Model 100/100A/105A systems. It contains information about the enclosure, installation information, and procedures for servicing field replaceable units (FRUs).
  • Page 12 • Appendix A gives the pin specifications for the ports on the back of the system unit. • Appendix B gives a list of the related documents. • Appendix C gives a list of recommended spare parts.
  • Page 13 Conventions The following conventions are used in this manual: Convention Description Ctrl/x Ctrl/x indicates that you hold down the Ctrl key while you press another key or mouse button (indicated here by x). A lowercase italic x indicates the generic use of a letter. For example, xxx indicates any combination of three alphabetic characters.

  • Page 15: Enclosure Description

    • Air circulation • Configuration guidelines The BA42B Enclosure houses the system unit of the VAX 4000 Model 100/100A/105A systems. It is a desktop-style enclosure (see Figure 1–1). Note The VAX 4000 Models 100A/105A can be distinguished from the Model 100 by the protruding connector panel (see Section 1.2). The illustrations in this manual will show different models as examples.

  • Page 16: Mass Storage Device Areas

    Enclosure Description Figure 1–1 BA42B Enclosure RE_EN06213A_91 1.1 Mass Storage Device Areas The BA42B Enclosure contains 3.5-inch (13.5 cm) and 5.25-inch (20.25cm) half-height mass storage devices. These mass storage devices are mounted on two drive-mounting shelves. The upper drive-mounting shelf can contain one, two, or three DSSI drives.

  • Page 17: Controls, Indicators, Ports, And Connectors

    Figure 1–2 shows the common ports and connectors in VAX 4000 BA42B-based systems. Figure 1–3 and Figure 1–4 show differences between the VAX 4000 Model 100, and the VAX 4000 Models 100A and 105A, respectively. Table 1–1 describes the functions of the controls, indicators, ports, and connectors in all VAX 4000 BA42B-based systems.

  • Page 18: Common Vax 4000 Ba42B-Based Systems Controls, Indicators, Ports, And Connectors For All Models

    Enclosure Description 1.2 Controls, Indicators, Ports, and Connectors Figure 1–2 Common VAX 4000 BA42B-Based Systems Controls, Indicators, Ports, and Connectors for all Models On/Off Switch ac Power Socket Synchronous Communications Ports (0,1) Asynchronous Communications Ports (A,B) MMJ Ports (0,1,3) Asynchronous Modem...

  • Page 19: Ports And Connectors Unique To The Vax 4000 Model

    Enclosure Description 1.2 Controls, Indicators, Ports, and Connectors Figure 1–3 Ports and Connectors Unique to the VAX 4000 Model 100 Q-Bus Ports SCSI Port DSSI Port MLO-012385 Enclosure Description 1–5...

  • Page 20: Ports And Connectors Unique To The Vax 4000 Model 100

    Enclosure Description 1.2 Controls, Indicators, Ports, and Connectors Figure 1–4 Ports and Connectors Unique to the VAX 4000 Model 100A/105A MLO-012384 DSSI port Q–bus ports ¡ Optional DSSI ports ¢ SCSI port £ 1–6 Enclosure Description...

  • Page 21: Functions Of The Controls, Indicators, Ports, And Connectors

    Enclosure Description 1.2 Controls, Indicators, Ports, and Connectors Table 1–1 Functions of the Controls, Indicators, Ports, and Connectors Component Description On/Off switch Applies and stops the power to the system unit as follows: • On ( | )—Applies the ac power to the system unit •...

  • Page 22: The System

    Enclosure Description 1.2 Controls, Indicators, Ports, and Connectors Table 1–1 (Cont.) Functions of the Controls, Indicators, Ports, and Connectors Component Description Break/enable switch A two-position switch that determines the function of MMJ port 3 as follows: • Up position—MMJ port 3 functions as a console port. In this state, you can press the Break key on the keyboard of a terminal connected to MMJ port 3 to put the system in console mode.

  • Page 23: Power And Signal Distribution

    Enclosure Description 1.3 Power and Signal Distribution 1.3 Power and Signal Distribution The power supply (30-35042-01) provides power to all the units in the enclosure. It accepts alternating current (ac) input voltage in the ranges 110 V ac to 120 V ac (88 V rms to 132 V rms) and 220 V ac to 240 V ac (176 V rms to 264 V rms).

  • Page 24: Power Distribution

    Enclosure Description 1.3 Power and Signal Distribution Figure 1–5 Power Distribution CPU Module Lower Shelf dc Harness Cable Power (17-03018-01) Supply TZ30 Only TZK10/11 TZK10/11 Additional Connector TZ30 RRD42/42 for RX26 RX26 RX26 Lower Drive Mounting Shelf RRD42/43 TZ30 Upper Shelf dc Harness Cable (17-03615-01)

  • Page 25: Air Circulation

    Enclosure Description 1.3 Power and Signal Distribution Figure 1–6 Signal Distribution External Q-bus External Synchronous SCSI (17-03545-01) Input/Output (17-02944-01) (17-02942-01) CPU Module Asynchronous Input/Output Internal SCSI (17-09242-01) SCSI Cable (17-03587-01) Internal DSSI Power Supply DSSI Cable (17-03544-01) Lower Drive Mounting Shelf Upper Drive Mounting Shelf MLO-012380...

  • Page 26: Configuration Guidelines

    1.5.1 Memory Configurations In the VAX 4000 100/100A/105A, the basic system memory is 16-MB or 64-MB. This memory is contained on two sets of MS44L-BC or MS44-DC modules installed on the KA52/KA53 CPU module. You can expand the system memory in 16-MB or 32-MB increments by adding MS44L-BC or MS44-DC memory options.

  • Page 27: Memory Expansion Connectors On The Ka52/Ka53 Cpu Module

    Enclosure Description 1.5 Configuration Guidelines Figure 1–7 Memory Expansion Connectors on the KA52/KA53 CPU Module MLO-009828 Note Both MS44–DC (four MS44–CA SIMMs) and MS44L–BC (four MS44L– AA SIMMs) must be installed entirely in either the ‘‘1’’ bank or the ‘‘0’’ bank of connectors;...

  • Page 28: Identifying Appropriate Banks Of Simm Connectors

    Enclosure Description 1.5 Configuration Guidelines Figure 1–8 Identifying Appropriate Banks of SIMM Connectors MLO-012342 Bank 1G Bank 0C Bank 1H Bank 0D ¡ ¡ ¢ Bank 1E Bank 0A ¢ Bank 1F Bank 0B £ £ 1–14 Enclosure Description...

  • Page 29: Communications Options

    Enclosure Description 1.5 Configuration Guidelines 1.5.2 Communications Options Table 1–3 lists the communications options that a BA42B Enclosure can contain. Table 1–3 BA42B Communications Options Option Name Description Asynchronous Options DHW42-AA Provides 8 DEC423 asynchronous lines DHW42-BA Provides 16 DEC423 asynchronous lines DHW42-CA Provides 8 EIA-232 asynchronous modem lines DHW42-UP...

  • Page 30: Communications Options In Model 100/100A/105A

    Enclosure Description 1.5 Configuration Guidelines The input/output module is a snap-fit assembly that is attached to the inside of the back panel of the BA42B Enclosure. The communications options logic boards have different locations in the BA42B Enclosure, depending on the model number of the system. The DHW42 logic board is located to the left of the CPU module, with the DSW42 logic board located to its right (see Figure 1–9;...

  • Page 31: Mass Storage Devices

    Enclosure Description 1.5 Configuration Guidelines 1.5.3 Mass Storage Devices Table 1–5 lists the mass storage devices that the BA42B Enclosure can contain. Table 1–5 BA42B Mass Storage Devices Option Name Description Size Capacity (in) RF31T/RF35 Disk drive 381-MB/852-MB /RF36 /1.6-GB TZ30 Tape drive 5.25...

  • Page 32: Mass Storage Device Combinations In The Ba42B Enclosure

    Enclosure Description 1.5 Configuration Guidelines Figure 1–10 Mass Storage Device Combinations in the BA42B Enclosure Upper Drive-mounting Shelf Lower Drive-mounting Shelf TLZ06 TLZ06 TZ30 TZ30 TZK10/11 TZK10/11 RRD42/43 RRD42/43 RX26 RX26 Left-hand Compartment Right-hand Compartment Note: RF* denotes RF31T/RF35/RF36 disk drives. MLO-009829 1–18 Enclosure Description...

  • Page 33: Installation Procedures

    Since the back of the enclosure differs from model to model, the portion of this chapter devoted to the actual installation of the system is divided into two sections; the first covers the VAX 4000 Model 100, and the second section covers the VAX 4000 Models 100A/105A.

  • Page 34: Additional Equipment

    Installation Procedures 2.1 Preparing the Site Figure 2–1 BA42B Dimensions 14.99 cm (5.90 in) 40.00 cm (15.75 in) 46.83 cm (18.26 in) RE_EN06221A_91 The dimensions of the container are as follows: • Height = 35.3 cm (14.0 inches) • Width = 61.1 cm (24.0 inches) •...

  • Page 35: Operating Environment

    Installation Procedures 2.1 Preparing the Site 2.1.3 Operating Environment Computer systems in office areas are subject to electrostatic discharge (ESD), temperature changes, and humidity. To install the system in the correct environment, follow these guidelines: • Install the system in a well-ventilated area where the temperature and humidity ranges listed in Table 2–1 are maintained during the year.

  • Page 36: Temperature, Humidity, And Altitude Ranges

    Installation Procedures 2.1 Preparing the Site 2.1.6 Temperature, Humidity, and Altitude Ranges Table 2–1 gives the operating, nonoperating, and storage ranges for the temperature, humidity, and altitude for BA42B Enclosure systems. Table 2–1 Temperature, Humidity, and Altitude Ranges Parameter Operating Range Nonoperating Range Storage Range Temperature...

  • Page 37: Unpacking The System

    Installation Procedures 2.1 Preparing the Site Table 2–2 BA42B Electrical Requirements Parameter Values Nominal voltages 110 V ac or 220 V ac Voltage ranges 100 V ac to 120 V ac (88 V rms to 132 V rms) and 220 V ac to 240 V ac (176 V rms to 264 V rms) Power source phase Single Nominal frequencies...

  • Page 38: System Unit And Accessory Tray Contents

    This precaution protects the system from damage. Note Figure 2–2 shows the contents of a VAX 4000 Model 100 kit as an example. The VAX 4000 100A/105A kits have no Ethernet Loopback connector, and may contain up to three DSSI terminators, depending on options ordered.

  • Page 39: Installing The Ba42B System

    To install a VAX 4000 Model 100: 2.3.1.1 Identifying the Ports and Connectors on the System Figure 1–2 and Figure 1–3 show the ports and connectors on a VAX 4000 Model 100. Section 1.2 describes the functions of the controls, indicators, ports, and connectors in all BA42B-based systems.

  • Page 40: Terminal Settings

    Installation Procedures 2.3 Installing the BA42B System Table 2–3 Terminal Settings Feature Setting Terminal mode VTnnn-7bit Transmit speed 9600 baud Receive speed receive = transmit Character format 8 bits, no parity Stop bits Comm1 port DEC-423 (data-leads-only) See the terminal documentation if you want more information on setting up the terminal.

  • Page 41: Connecting The Console Terminal

    Installation Procedures 2.3 Installing the BA42B System Figure 2–3 Connecting the Console Terminal Grounding Pillar Terminal Cable MLO-009832 Installation Procedures 2–9...

  • Page 42: Connecting The Thinwire Terminator Or Loopback Connector

    2.3 Installing the BA42B System 2.3.1.3 Connecting the ThinWire Terminator or Loopback Connector You can connect BA42B-based VAX 4000 Model 100 systems to either a ThinWire Ethernet network or to a standard Ethernet network. To test the Ethernet circuitry in the system before you connect to a network, install either the ThinWire terminator or the standard Ethernet loopback connector.

  • Page 43: Connecting The Thinwire Terminator To The System

    Installation Procedures 2.3 Installing the BA42B System Figure 2–4 Connecting the ThinWire Terminator to the System Terminators T-Connector MLO-009833 Installation Procedures 2–11...

  • Page 44: Connecting The Standard Ethernet Loopback Connector To

    Installation Procedures 2.3 Installing the BA42B System If you want to use a standard Ethernet network, follow these steps: 1. Set the Ethernet switch to the left position. 2. Connect the standard Ethernet loopback connector to the standard Ethernet port on the back of the system unit (see Figure 2–5). Figure 2–5 Connecting the Standard Ethernet Loopback Connector to the System Standard Ethernet Loopback Connector...

  • Page 45: Connecting The Scsi Terminator

    Installation Procedures 2.3 Installing the BA42B System 2.3.1.4 Connecting the SCSI Terminator 1. Connect the SCSI terminator to the SCSI port as shown in Figure 2–6. 2. Close the bail loops over the terminator ends. Figure 2–6 Connecting the SCSI Terminator MLO-009935 Installation Procedures 2–13...

  • Page 46: Connecting The Dssi Terminator

    Installation Procedures 2.3 Installing the BA42B System 2.3.1.5 Connecting the DSSI Terminator Connect the DSSI terminator to the DSSI port as shown in Figure 2–7. Figure 2–7 Connecting the DSSI Terminator MLO-009936 2–14 Installation Procedures...

  • Page 47: Connecting The System Unit Power Cord

    2.3.1.6 Connecting the System Unit Power Cord A BA42B-based VAX 4000 Model 100 accepts 100 V ac to 120 V ac at 50 Hz or 60 Hz, or 220 V ac to 240 V ac at 50 Hz or 60 Hz. The power supply is self-sensing.

  • Page 48: Turning On The System

    2. Set the on/off switch on the system to the on ( | ) position (see Figure 2–9). Figure 2–9 Turning On the System On/Off Switch MLO-009835 Refer to the VAX 4000 Model 100, 100A, 105A KA52/KA53 CPU System Maintenance manual for information about the self-tests that run when you turn on the system. 2–16 Installation Procedures...

  • Page 49: Installing A Ba42B-Based Vax 4000 Model 100A/105A

    To install A VAX 4000 Model 100A or 105A: 2.3.2.1 Identifying the Ports and Connectors on the System Figure 1–2 and Figure 1–4 show the ports and connectors in VAX 4000 Models 100A and 105A. Section 1.2 describes the functions of the controls, indicators, ports, and connectors in all VAX 4000 BA42B-based systems.
  • Page 50 Installation Procedures 2.3 Installing the BA42B System 3. Connect the terminal cable supplied with the system (see Figure 2–2) to MMJ port 3 on the back of the system unit (see Figure 2–10). Connect the other end of the console cable to a DEC423 port on the terminal. 4.

  • Page 51: Connecting The Console Terminal

    Installation Procedures 2.3 Installing the BA42B System Figure 2–10 Connecting the Console Terminal MLO-012058 Terminal cable Grounding pillar ¡ Installation Procedures 2–19...

  • Page 52: Connecting The Thinwire Terminator Or Loopback Connector

    2.3 Installing the BA42B System 2.3.2.3 Connecting the ThinWire Terminator or Loopback Connector You can connect the VAX 4000 Models 100A/105A to either a ThinWire Ethernet network or to a standard Ethernet network. To test the Ethernet circuitry in the system before you connect to a network, install either the ThinWire terminator or the standard Ethernet loopback connector.

  • Page 53: Connecting The Thinwire Terminator To The System

    Installation Procedures 2.3 Installing the BA42B System Figure 2–11 Connecting the ThinWire Terminator to the System MLO-010201 T-connector Terminators ¡ Installation Procedures 2–21...

  • Page 54: Connecting The Standard Ethernet Loopback Connector To The Vax 4000 Models 100A/105A

    Installation Procedures 2.3 Installing the BA42B System Figure 2–12 Connecting the Standard Ethernet Loopback Connector to the VAX 4000 Models 100A/105A MLO-012382 Standard Ethernet loopback connector Ethernet cable ¡ 2–22 Installation Procedures...

  • Page 55: Connecting The Scsi Terminator

    Installation Procedures 2.3 Installing the BA42B System 2.3.2.4 Connecting the SCSI Terminator 1. Connect the SCSI terminator to the SCSI port as shown in Figure 2–13. 2. Close the bail loops over the terminator ends. Figure 2–13 Connecting the SCSI Terminator MLO-012059 SCSI terminator and port Installation Procedures 2–23...

  • Page 56: Connecting The Dssi Terminator

    Installation Procedures 2.3 Installing the BA42B System 2.3.2.5 Connecting the DSSI Terminator Connect the DSSI terminator to the DSSI port as shown in Figure 2–14. Figure 2–14 Connecting the DSSI Terminator MLO-010203 DSSI terminator and port DSSI Terminators connected to optional DSSI ports ¡...

  • Page 57: Connecting The System Unit Power Cord

    2.3.2.6 Connecting the System Unit Power Cord A VAX 4000 Model 100A/105A accepts 100 V ac to 120 V ac at 50 Hz or 60 Hz, or 220 V ac to 240 V ac at 50 Hz or 60 Hz. The power supply is self-sensing.

  • Page 58: Turning On The System

    2. Set the on/off switch on the system to the on ( | ) position (see Figure 2–16). Figure 2–16 Turning On the System MLO-010205 On/off switch Refer to the VAX 4000 Model 100, 100A, 105A KA52/53 CPU System Maintenance manual for information about the self-tests that run when you turn on the system. 2–26 Installation Procedures...

  • Page 59: Removing And Replacing Field Replaceable Units

    Removing and Replacing Field Replaceable Units Note FRUs for the BA42B-based VAX 4000 systems are the same for Models 100, 100A, and 105A, except where noted. Illustrations in this chapter depict various models. This chapter describes how to remove and replace the Field Replaceable Units (FRUs) in the BA42B Enclosure.
  • Page 60 Table 3–1 lists the major FRUs in the BA42B Enclosure. It also gives the order numbers for the FRUs and a reference to a section in this chapter that gives information on how to replace the FRU. Refer to the VAX 4000 BA42B Enclosure System Options manual for more information about options.
  • Page 61 KA53 CPU module (Model 105A) 54-21797-02 Power supply 30-35042-01 3.19 Note Figure 3–1 shows a VAX 4000 Model 100 as an example. VAX 4000 Models 100A and 105A have the same FRUs in the same locations. Removing and Replacing Field Replaceable Units 3–3...

  • Page 62: Major Frus In The Ba42B Enclosure

    Removing and Replacing Field Replaceable Units Figure 3–1 Major FRUs in the BA42B Enclosure RF* Disk Drives Upper Drive Mounting Shelf TZ30 or TLZ06 Tape Drive, or TZK10/11 Tape Drive, or Lower Drive RX26 Diskette Drive, or Mounting Shelf RRD42/43 CDROM Drive TZK10/11 Tape Drive (Optionally, DSW42 Input/Output Module...

  • Page 63: Removing The Enclosure Cover

    Removing and Replacing Field Replaceable Units 3.1 Removing the Enclosure Cover 3.1 Removing the Enclosure Cover To remove the enclosure cover, follow these steps: 1. Set the on/off switch on the system to the off (O) position. 2. Disconnect the cables, loopback connectors, and terminators that are connected to the system.

  • Page 64: Removing An Ms44 Or Ms44L Memory Module

    Removing and Replacing Field Replaceable Units 3.2 Removing an MS44 or MS44L Memory Module 3.2 Removing an MS44 or MS44L Memory Module To remove a memory module: 1. Remove the ac power from the BA42B Enclosure. 2. Remove the enclosure cover (refer to Section 3.1). Caution Static electricity can damage integrated circuits.

  • Page 65: Memory Module Connectors On The Ka52/53 Cpu Module

    Removing and Replacing Field Replaceable Units 3.2 Removing an MS44 or MS44L Memory Module Figure 3–3 Memory Module Connectors on the KA52/53 CPU Module MS44 or MS44L Memory Modules (4) MLO-009839 4. Push the metal board clips on the memory module connector away from the center.

  • Page 66: Removing A Memory Module

    Removing and Replacing Field Replaceable Units 3.2 Removing an MS44 or MS44L Memory Module Figure 3–4 Removing a Memory Module Metal Board Clip MS44 Memory Modules MLO-009876 3–8 Removing and Replacing Field Replaceable Units...

  • Page 67: Removing The Upper Drive-Mounting Shelf

    Removing and Replacing Field Replaceable Units 3.3 Removing the Upper Drive-Mounting Shelf 3.3 Removing the Upper Drive-Mounting Shelf To reach some of the FRUs in the BA42B Enclosure, you must remove the upper drive-mounting shelf. Depending on the system configuration, the upper drive-mounting shelf can contain one, two, or three disk drives.
  • Page 68 Removing and Replacing Field Replaceable Units 3.3 Removing the Upper Drive-Mounting Shelf Figure 3–5 Removing the Upper Drive-Mounting Shelf MLO-012287 Internal power cable Internal power cable with pigtailed DSSI power cable ¡ CPU module DSSI power cable connector ¢ 3–10 Removing and Replacing Field Replaceable Units...

  • Page 69: Disconnecting The Dssi Cables From The Drives

    Removing and Replacing Field Replaceable Units 3.3 Removing the Upper Drive-Mounting Shelf 3. Disconnect the DSSI cable from the disk drives by pulling the pull-tabs. Figure 3–6 shows a typical signal cable being disconnected the BA42B Enclosure. Figure 3–6 Disconnecting the DSSI Cables from the Drives MLO-010804 Internal DSSI connector 4.

  • Page 70: Removing The Upper Drive-Mounting Shelf

    Removing and Replacing Field Replaceable Units 3.3 Removing the Upper Drive-Mounting Shelf Figure 3–7 Removing the Upper Drive-Mounting Shelf Captive Screws (3) Upper Drive Mounting Shelf RE_EN06232A_91 5. Lift the left side of the upper drive-mounting shelf, and pull the drive- mounting shelf to the left until the tabs on the right side of the mounting shelf are clear of the cutouts in the lower drive-mounting shelf.

  • Page 71: Removing The Rx26 Diskette Drive Assembly

    Removing and Replacing Field Replaceable Units 3.4 Removing the RX26 Diskette Drive Assembly 3.4 Removing the RX26 Diskette Drive Assembly The RX26 diskette drive assembly (when installed) is positioned on the left side or the right side of the lower drive-mounting shelf when viewed from the front.

  • Page 72: Removing The Rx26 Fdi/Scsi Board

    Removing and Replacing Field Replaceable Units 3.4 Removing the RX26 Diskette Drive Assembly Figure 3–8 Removing the RX26 Diskette Drive Assembly RX26 Diskette Drive Captive Screw RE_EN06234A_91 7. Lift the left side of the RX26 diskette drive assembly and pull the diskette drive assembly to the left until the tabs on the right side of the mounting bracket are clear of the cutouts in the lower drive-mounting shelf.

  • Page 73: Separating The Rx26 Diskette Drive From The Mounting Bracket

    Removing and Replacing Field Replaceable Units 3.4 Removing the RX26 Diskette Drive Assembly 3. Press firmly on the front edge of the FDI/SCSI board with your finger. When the two holes on the front edge of the FDI/SCSI board are clear of the tabs in the RX26 mounting bracket, slide the RX26 FDI/SCSI board out of the RX26 mounting bracket (refer to Figure 3–9).

  • Page 74: Setting The Scsi Id On The Replacement Rx26 Fdi/Scsi Board

    Removing and Replacing Field Replaceable Units 3.4 Removing the RX26 Diskette Drive Assembly Figure 3–10 Separating the Mounting Bracket from the RX26 Diskette Drive Philips Screws (4) RX26 Mounting Bracket RX26 Diskette Drive RE_EN06452A_91 3.4.3 Setting the SCSI ID on the Replacement RX26 FDI/SCSI Board When replacing the FDI/SCSI board, you must set the SCSI ID of the replacement board to the SCSI ID of the board you remove.

  • Page 75: Location Of The Scsi Id Switches On The Rx26 Fdi/Scsi Board

    Removing and Replacing Field Replaceable Units 3.4 Removing the RX26 Diskette Drive Assembly Figure 3–11 Location of the SCSI ID Switches on the RX26 FDI/SCSI Board Note: The switch is off in the up position SCSI ID Switches RE_EN06236A_91 After you install the FDI/SCSI board and connect the RX26 ribbon cable, you can reach the SCSI ID switches through a ventilation slot in the mounting bracket (refer to Figure 3–12).

  • Page 76: How To Reach The Scsi Id Switches On The Rx26 Fdi/Scsi

    Removing and Replacing Field Replaceable Units 3.4 Removing the RX26 Diskette Drive Assembly Figure 3–12 How to Reach the SCSI ID Switches on the RX26 FDI/SCSI Board Note: The SCSI ID shown is 4 (S1 is on, S2 is off, and S3 is off). RE_EN06471A_91 3–18 Removing and Replacing Field Replaceable Units...

  • Page 77: Removing A Tz30 Tape Drive

    3.5 Removing a TZ30 Tape Drive 3.5 Removing a TZ30 Tape Drive In the VAX 4000 Models 100, 100A, 105A, the TZ30 tape drive is always mounted in the right-hand position of the lower drive-mounting shelf, when viewed from the front. To remove a TZ30 tape drive from the BA42B Enclosure, follow these steps: 1.

  • Page 78: Removing A Tz30 Tape Drive

    Removing and Replacing Field Replaceable Units 3.5 Removing a TZ30 Tape Drive Figure 3–13 Removing a TZ30 Tape Drive TZ30 Tape Drive Captive Screw RE_EN06237A_91 4. Lift the left side of the TZ30 tape drive. Slide the TZ30 tape drive to the left until the tabs on the right side of the mounting bracket are clear of the cutouts in the drive-mounting shelf.

  • Page 79: Separating The Tz30 Tape Drive From The Mounting Bracket

    Removing and Replacing Field Replaceable Units 3.5 Removing a TZ30 Tape Drive 3.5.1 Separating the TZ30 Tape Drive from the Mounting Bracket When you are installing a replacement TZ30 tape drive, you must use the mounting bracket (74-42115-01) that is attached to the faulty TZ30 tape drive (TZ30-AA).

  • Page 80: Setting The Scsi Id On The Replacement Tz30 Tape Drive

    2. The SCSI ID shown is 5 (S2 is on, S3 is off, and S4 is on). RE_EN06238A_91 Refer to the VAX 4000 BA42B Enclosure System Options manual for more information about setting the SCSI ID of the TZ30 tape drive.

  • Page 81: Removing A Tzk10/Tzk11 Tape Drive

    Removing and Replacing Field Replaceable Units 3.6 Removing a TZK10/TZK11 Tape Drive 3.6 Removing a TZK10/TZK11 Tape Drive The TZK10/TZK11 tape drive (when installed) can be on the right side or the left side of the lower drive-mounting shelf, when viewed from the front. The following procedure describes how to remove a TZK10/TZK11 tape drive from the right side of the lower drive-mounting shelf.

  • Page 82: Removing The Tzk10/Tzk11 Tape Drive

    Removing and Replacing Field Replaceable Units 3.6 Removing a TZK10/TZK11 Tape Drive Figure 3–16 Removing the TZK10/TZK11 Tape Drive TZK10 Tape Drive Captive Screw RE_EN06239A_91 4. Lift the left side of the TZK10/TZK11 tape drive. Slide the TZK10/TZK11 tape drive to the left until the tabs on the right side of the mounting bracket are clear of the cutouts in the lower drive-mounting shelf.

  • Page 83: Separating The Tzk10/Tzk11 Tape Drive From The Mounting Bracket

    Removing and Replacing Field Replaceable Units 3.6 Removing a TZK10/TZK11 Tape Drive 3.6.1 Separating the TZK10/TZK11 Tape Drive from the Mounting Bracket When you install a replacement TZK10/TZK11 tape drive, you must use the mounting bracket (74-42449-01) that is attached to the faulty TZK10/TZK11 tape drive (TZK10-AA, TZK11-AA).

  • Page 84: Setting The Scsi Id Of The Replacement Tzk10/Tzk11 Tape Drive

    Removing and Replacing Field Replaceable Units 3.6 Removing a TZK10/TZK11 Tape Drive 3.6.2 Setting the SCSI ID of the Replacement TZK10/TZK11 Tape Drive To set the SCSI ID of the replacement TZK10/TZK11 tape drive, follow these steps: 1. Note the positions of the SCSI ID jumper wires on the TZK10/TZK11 tape drive you removed.

  • Page 85: Locations Of The Scsi Id Jumper Wires On The Tzk10/Tzk11

    SCSI ID Select Note: The SCSI ID shown is 5. RE_EN06240A_91 Refer to the VAX 4000 BA42B Enclosure System Options manual for more information about setting the SCSI ID of the TZK10/TZK11 tape drives. Removing and Replacing Field Replaceable Units 3–27...

  • Page 86: Removing A Tlz06/Tlz07 Tape Drive

    Removing and Replacing Field Replaceable Units 3.7 Removing a TLZ06/TLZ07 Tape Drive 3.7 Removing a TLZ06/TLZ07 Tape Drive The TLZ06/TLZ07 tape drive (when installed) can be on the right side or the left side of the lower drive-mounting shelf, when viewed from the front. The following procedure describes how to remove a TLZ06/TLZ07 tape drive from the right side of the lower drive-mounting shelf.

  • Page 87: Removing The Tlz06/Tlz07 Tape Drive

    Removing and Replacing Field Replaceable Units 3.7 Removing a TLZ06/TLZ07 Tape Drive Figure 3–19 Removing the TLZ06/TLZ07 Tape Drive TLZ06 Tape Drive Captive Screw MLO-009826 4. Lift the left side of the TLZ06/TLZ07 tape drive. Slide the TLZ06/TLZ07 tape drive to the left until the tabs on the right side of the mounting bracket are clear of the cutouts in the lower drive-mounting shelf.

  • Page 88: Separating The Tlz06/Tlz07 Tape Drive From The Mounting Bracket

    Removing and Replacing Field Replaceable Units 3.7 Removing a TLZ06/TLZ07 Tape Drive 3.7.1 Separating the TLZ06/TLZ07 Tape Drive from the Mounting Bracket When you install a replacement TLZ06/TLZ07 tape drive, you must use the mounting bracket (74-42449-01) that is attached to the faulty TLZ06/TLZ07 tape drive (TLZ06-AA, TLZ07-AA).

  • Page 89: Setting The Scsi Id And Option Switches Of The Replacement Tlz06/Tlz07 Tape Drive

    /TLZ07 Tape Drive Mode and SCSI Address Switches GA_EN00144A_92A Refer to the VAX 4000 BA42B Enclosure System Options manual for more information about setting the SCSI ID and option switches on TLZ06/TLZ07 tape drives. Removing and Replacing Field Replaceable Units 3–31...

  • Page 90: Removing An Rf31T/Rf35/Rf36 Disk Drive

    Removing and Replacing Field Replaceable Units 3.8 Removing an RF31T/RF35/RF36 Disk Drive 3.8 Removing an RF31T/RF35/RF36 Disk Drive Note RF-series disk drives are only installed on the upper drive mounting shelf in a BA42B enclosure. The illustrations in this section show how to remove and install the RF-series drive in the left-hand position of the upper drive-mounting shelf, when viewed from the front.

  • Page 91: Separating The Rf-Series Drive From The Mounting Bracket

    Removing and Replacing Field Replaceable Units 3.8 Removing an RF31T/RF35/RF36 Disk Drive Figure 3–22 Removing a Sample RF31T/RF35/RF36 Disk Drive Option RF-Series Disk Drive RF-Series Disk Drive Spring Clip MLO-012389 3. Slide the drive forward until the rubber grommets attached to the mounting bracket are clear of the cutouts in the lower drive-mounting shelf.

  • Page 92: Separating The Mounting Bracket From The Rf-Series Drive

    Removing and Replacing Field Replaceable Units 3.8 Removing an RF31T/RF35/RF36 Disk Drive Figure 3–23 Separating the Mounting Bracket from the RF-Series Drive G ro mm e t s L J - 0 2 1 6 4 - T I 0 3–34 Removing and Replacing Field Replaceable Units...

  • Page 93: Setting The Dssi Id

    3.8.2 Setting the DSSI ID In a BA42B-based VAX 4000 system, each DSSI device must have a unique DSSI ID number. When installing RF31T/RF35/RF36 disk drive options, the DSSI ID must be set to an ID that is not used by any other DSSI device in the system.

  • Page 94: Rf31T/Rf35/Rf36 Dssi Id Jumper Wire Combinations

    Removing and Replacing Field Replaceable Units 3.8 Removing an RF31T/RF35/RF36 Disk Drive Table 3–2 RF31T/RF35/RF36 DSSI ID Jumper Wire Combinations DSSI ID Pin 5 Pin 3 Pin 1 2. Determine the DSSI ID number assigned to the RF31T/RF35/RF36 disk drive option. Note When the system is in console mode, enter the SHOW DSSI command to view the DSSI ID numbers for the existing devices in the system.

  • Page 95: Removing An Rrd42 Cd-Rom Drive

    Removing and Replacing Field Replaceable Units 3.9 Removing an RRD42 CD–ROM Drive 3.9 Removing an RRD42 CD–ROM Drive Note The illustrations in this section show how to remove and install the RRD42 CD–ROM drive in the left-hand position of the lower drive-mounting shelf, when viewed from the front.

  • Page 96: Removing The Rrd42 Cd-Rom Drive

    Removing and Replacing Field Replaceable Units 3.9 Removing an RRD42 CD–ROM Drive Figure 3–25 Removing the RRD42 CD–ROM Drive Captive Screw RRD42 CDROM Drive RE_EN06241A_91 4. Lift the right side of the RRD42 CD–ROM drive. Slide the RRD42 CD–ROM drive to the right until the tabs on the left side of the mounting bracket are clear of the cutouts in the lower drive-mounting shelf.

  • Page 97: Separating The Rrd42 Cd-Rom Drive From The Mounting Bracket

    Removing and Replacing Field Replaceable Units 3.9 Removing an RRD42 CD–ROM Drive 3.9.1 Separating the RRD42 CD–ROM Drive from the Mounting Bracket When you install a replacement RRD42 CD–ROM drive, you must use the mounting bracket (74-42449-01) that is attached to the faulty RRD42 CD–ROM drive (RRD42-AA).

  • Page 98: Separating The Mounting Bracket From The Rrd42 Cd-Rom Drive

    Removing and Replacing Field Replaceable Units 3.9 Removing an RRD42 CD–ROM Drive Figure 3–26 Separating the Mounting Bracket from the RRD42 CD–ROM Drive RRD42 CDROM Drive RRD42 Mounting Bracket Phillips Screws (4) MLO-009939 3–40 Removing and Replacing Field Replaceable Units...

  • Page 99: Setting The Scsi Id On The Replacement Rrd42 Cd-Rom Drive

    Removing and Replacing Field Replaceable Units 3.9 Removing an RRD42 CD–ROM Drive 4. Keep the mounting bracket and the four screws in a safe place because you must use the same bracket and screws to install the replacement RRD42 CD–ROM drive. Note When you attach the mounting bracket to the replacement RRD42 CD–ROM drive, align the holes on the mounting bracket that are...

  • Page 100: Rrd42 Scsi Id Jumper Wire Locations

    Jumper Wires Parity Note: The SCSI ID shown is 4. RE_EN06242A_91 Refer to the VAX 4000 BA42B Enclosure System Options manual for more information about setting the SCSI ID of the RRD42 CD–ROM drive. 3–42 Removing and Replacing Field Replaceable Units...

  • Page 101: Removing An Rrd43 Cd-Rom Drive

    Removing and Replacing Field Replaceable Units 3.10 Removing an RRD43 CD–ROM Drive 3.10 Removing an RRD43 CD–ROM Drive Note The illustrations in this section show how to remove and install the RRD43 CD–ROM drive in the left-hand position of the lower drive-mounting shelf, when viewed from the front.

  • Page 102: Removing The Rrd43 Cd-Rom Drive

    Removing and Replacing Field Replaceable Units 3.10 Removing an RRD43 CD–ROM Drive Figure 3–28 Removing the RRD43 CD–ROM Drive RRD43 Captive Screw MLO-012260 4. Lift the right side of the RRD43 CD–ROM drive. Slide the RRD43 CD–ROM drive to the right until the tabs on the left side of the mounting bracket are clear of the cutouts in the lower drive-mounting shelf.

  • Page 103: Separating The Rrd43 Cd-Rom Drive From The Mounting Bracket

    Removing and Replacing Field Replaceable Units 3.10 Removing an RRD43 CD–ROM Drive 3.10.1 Separating the RRD43 CD–ROM Drive from the Mounting Bracket When you install a replacement RRD43 CD–ROM drive, you must use the mounting bracket (74-42449-01) that is attached to the faulty RRD43 CD–ROM drive (RRD43-AA).

  • Page 104: Separating The Mounting Bracket From The Rrd43 Cd-Rom Drive

    Removing and Replacing Field Replaceable Units 3.10 Removing an RRD43 CD–ROM Drive Figure 3–29 Separating the Mounting Bracket from the RRD43 CD–ROM Drive Power Connector SCSI ID Jumper Wires SCSI Cable Connector SCSI ID 4 Parity Note: The SCSI ID Shown is 1 MLO-012257 3–46 Removing and Replacing Field Replaceable Units...

  • Page 105: Setting The Scsi Id On The Replacement Rrd43 Cd-Rom Drive

    SCSI ID jumper wires on the RRD43 CD–ROM drive you removed. Refer to the VAX 4000 BA42B Enclosure System Options manual for more information about setting the SCSI ID of the RRD43 CD–ROM drive.

  • Page 106: Removing The Upper And Lower Drive-Mounting Shelf Combination

    Removing and Replacing Field Replaceable Units 3.11 Removing the Upper and Lower Drive-Mounting Shelf Combination 3.11 Removing the Upper and Lower Drive-Mounting Shelf Combination Caution Static electricity can damage integrated circuits. Wear a wrist strap and place an antistatic mat under the system when working with the internal parts of the system.

  • Page 107: Combination

    Removing and Replacing Field Replaceable Units 3.11 Removing the Upper and Lower Drive-Mounting Shelf Combination Figure 3–30 Removing the Upper and Lower Drive-Mounting Shelf Combination Captive Screws (2) Power Supply Unit Captive Screws (2) Upper Drive Mounting Shelf Lower Drive Mounting Shelf Phillips Screws (2) MLO-009942...

  • Page 108: Removing The Upper And Lower Drive-Mounting Shelf Combination

    Removing and Replacing Field Replaceable Units 3.11 Removing the Upper and Lower Drive-Mounting Shelf Combination 6. Disconnect the SCSI cable from the CPU module (refer to Figure 3–31). Figure 3–31 Disconnecting the SCSI Cable SCSI Cable MLO-009877 3–50 Removing and Replacing Field Replaceable Units...

  • Page 109: Disconnecting The Dssi Cable

    Removing and Replacing Field Replaceable Units 3.11 Removing the Upper and Lower Drive-Mounting Shelf Combination 7. Disconnect the DSSI cable from the CPU module (refer to Figure 3–32). Figure 3–32 Disconnecting the DSSI Cable CPU Module MLO-009932 8. Lift the upper and lower drive-mounting shelf combination out of the system enclosure with the devices and cables in place.

  • Page 110: Removing The Scsi Cable From The Enclosure

    Removing and Replacing Field Replaceable Units 3.12 Removing the SCSI Cable from the Enclosure 3.12 Removing the SCSI Cable from the Enclosure To remove the SCSI cable from the BA42B Enclosure, follow these steps: 1. Remove the upper and lower drive-mounting shelf combination (refer to Section 3.11).

  • Page 111: Removing The Dssi Cable From The Enclosure

    Removing and Replacing Field Replaceable Units 3.12 Removing the SCSI Cable from the Enclosure Figure 3–33 Separating the Upper Drive-Mounting Shelf from the Lower Drive-Mounting Shelf Captive Screw Upper Drive Mounting Shelf Lower Drive Mounting Shelf RE_EN06490A_91 3.13 Removing the DSSI Cable from the Enclosure To remove the DSSI cable from the BA42B Enclosure, follow these steps: 1.

  • Page 112: Removing The Dssi Cable From The Daughter Board

    Removing and Replacing Field Replaceable Units 3.13 Removing the DSSI Cable from the Enclosure 6. Disconnect the DSSI cable from the DSSI daughter board (refer to Figure 3–34). Figure 3–34 Removing the DSSI Cable from the Daughter Board CPU Module MLO-009932 Note If your system has a dual DSSI daughter board installed, it will be...

  • Page 113: Removing The Dssi Daughter Board

    Removing and Replacing Field Replaceable Units 3.14 Removing the DSSI Daughter Board 3.14 Removing the DSSI Daughter Board Caution Static electricity can damage integrated circuits. Wear a wrist strap and place an antistatic mat under the system unit when working with the internal parts of the system unit.

  • Page 114: Removing The Dssi Daughter Board

    Removing and Replacing Field Replaceable Units 3.14 Removing the DSSI Daughter Board Figure 3–35 Removing the DSSI Daughter Board CPU Module MLO-009932 3–56 Removing and Replacing Field Replaceable Units...

  • Page 115: Removing The Dssi Cable And Daughter Board

    Removing and Replacing Field Replaceable Units 3.14 Removing the DSSI Daughter Board Figure 3–36 Removing the DSSI Cable and Daughter Board MLO-012066 DSSI cable and connector Standoff tool ¡ Standoff pillar ¢ CPU module DSSI connector £ DSSI daughter board 5.

  • Page 116: Changing The Dssi Id

    Removing and Replacing Field Replaceable Units 3.14 Removing the DSSI Daughter Board 3.14.1 Changing the DSSI ID The DSSI ID can be changed by removing or replacing jumpers on the DSSI daughter board. Figure 3–37 shows the three jumper locations (labeled 4 2 1 octal) on the board and contains a table illustrating the eight possible DSSI IDs (0 to 7).

  • Page 117: Dssi Id Jumper Locations

    Removing and Replacing Field Replaceable Units 3.14 Removing the DSSI Daughter Board Figure 3–37 DSSI ID Jumper Locations ID Select Plastic Jumper (in) DSSI ID Jumpers ID SELECT Jumper Settings MLO-009945 Removing and Replacing Field Replaceable Units 3–59...

  • Page 118: Removing The Dsw42 Logic Board

    Removing and Replacing Field Replaceable Units 3.15 Removing the DSW42 Synchronous Communications Option 3.15 Removing the DSW42 Synchronous Communications Option The DSW42 synchronous communications option contains three components that you must remove from the CPU module: • A logic board (54-20640-01) •...

  • Page 119: Removing The Dsw42 Input/Output Cable

    Removing and Replacing Field Replaceable Units 3.15 Removing the DSW42 Synchronous Communications Option Figure 3–38 Removing the DSW42 Logic Board Standoff Pillars (2) DSW42 Logic Board CPU Module MLO-009880 2. Press the latch on the other standoff pillar and push up that corner of the DSW42 logic board until the DSW42 logic board is released.

  • Page 120: Removing The Dsw42 Input/Output Module

    Removing and Replacing Field Replaceable Units 3.15 Removing the DSW42 Synchronous Communications Option 3. Remove the DSW42 input/output cable from the enclosure. Figure 3–39 Removing the DSW42 Input/Output Cable DSW42 Input/Output Module DSW42 Input/Output Cable CPU Module MLO-009878 3.15.3 Removing the DSW42 Input/Output Module To remove the DSW42 input/output module, follow these steps: 1.

  • Page 121: Removing The Dsw42 Input/Output Module

    Removing and Replacing Field Replaceable Units 3.15 Removing the DSW42 Synchronous Communications Option 4. Lift up and remove the DSW42 input/output module from the enclosure. Figure 3–40 Removing the DSW42 Input/Output Module Spring Clip DSW42 Input/Output Module CPU Module MLO-009888 Removing and Replacing Field Replaceable Units 3–63...

  • Page 122: Removing The Dhw42 Asynchronous Communications Option

    Removing and Replacing Field Replaceable Units 3.16 Removing the DHW42 Asynchronous Communications Option 3.16 Removing the DHW42 Asynchronous Communications Option The DHW42 asynchronous communications option contains three components that you must remove from the system enclosure as follows: • A logic board (54-20662-01) •...

  • Page 123: Removing The Dhw42 Input/Output Cable

    Removing and Replacing Field Replaceable Units 3.16 Removing the DHW42 Asynchronous Communications Option Figure 3–41 Removing the DHW42 Logic Board Standoff Pillars (2) DHW42 Logic Board CPU Module MLO-009879 2. Press the latch on the other standoff pillar and push up the corner of the DHW42 logic board until the latch releases the DHW42 logic board.

  • Page 124: Removing The Dhw42 Input/Output Module

    Removing and Replacing Field Replaceable Units 3.16 Removing the DHW42 Asynchronous Communications Option 3. Remove the DHW42 input/output cable from the enclosure. Figure 3–42 Removing the DHW42 Input/Output Cable DSW42 Input/Output Module DSW42 Input/Output Cable CPU Module MLO-009881 3.16.3 Removing the DHW42 Input/Output Module To remove the DHW42 input/output module, follow these steps: 1.

  • Page 125: Removing The Dhw42 Input/Output Module

    Removing and Replacing Field Replaceable Units 3.16 Removing the DHW42 Asynchronous Communications Option 4. Lift up and remove the DHW42 input/output module from the enclosure. Figure 3–43 Removing the DHW42 Input/Output Module Spring Clip DSW42 Input/Output Module CPU Module MLO-009889 Removing and Replacing Field Replaceable Units 3–67...

  • Page 126: Removing The Cpu Module

    Removing and Replacing Field Replaceable Units 3.17 Removing the CPU Module 3.17 Removing the CPU Module To remove the CPU module from the BA42B Enclosure, follow these steps: 1. Remove the ac power from the BA42B Enclosure. 2. Disconnect the external cables, loopback connectors, and terminators from the back of the system unit.

  • Page 127: Disconnecting The Cables From The Cpu Module

    Removing and Replacing Field Replaceable Units 3.17 Removing the CPU Module Figure 3–44 Disconnecting the Cables from the CPU Module SCSI Ribbon Cable Power Cable CPU Module MLO-009890 Removing and Replacing Field Replaceable Units 3–69...
  • Page 128 Removing and Replacing Field Replaceable Units 3.17 Removing the CPU Module 9. Disconnect the SCSI ribbon cable (17-02944-01) from the CPU module (refer to Figure 3–44). Caution Ensure that you do not damage any of the CPU module components by exerting too much force on the components.

  • Page 129: Removing The Cpu Module

    Removing and Replacing Field Replaceable Units 3.17 Removing the CPU Module Figure 3–45 Removing the CPU Module PUSH PUSH MLO-012381 Spring clips ¢ Keyhole cutouts (10) Semicircular cutout ¡ Removing and Replacing Field Replaceable Units 3–71...

  • Page 130: Replacing The Cpu Module

    Removing and Replacing Field Replaceable Units 3.18 Replacing the CPU Module 3.18 Replacing the CPU Module To install a replacement CPU module in a BA42B Enclosure, follow these steps: Caution Static electricity can damage integrated circuits. Wear a wrist strap and place an antistatic mat under the system when working with the internal parts of the system.

  • Page 131: Removing The Power Supply

    3.19 Removing the Power Supply Note In VAX 4000 systems, the power supply (30-35042-01) is a single FRU. It does not have any replaceable components. To remove the power supply from the BA42B Enclosure, follow these steps: 1.

  • Page 132: Removing The Power Supply

    Removing and Replacing Field Replaceable Units 3.19 Removing the Power Supply Figure 3–46 Removing the Power Supply Power Supply Unit Captive Screws (2) Phillips Screws (2) MLO-009940 6. Loosen the two Phillips screws (90-09984-07) that secure the power supply to the left side of the enclosure (refer to Figure 3–46). Caution Ensure that you do not damage any of the MS44 or MS44L memory modules when you lift the power supply out of the enclosure.

  • Page 133: A Pin Specifications For The Ports On The Ba42B System

    Pin Specifications for the Ports on the BA42B System Figure A–1 shows the pin specifications for the ports on the BA42B system. Pin Specifications for the Ports on the BA42B System A–1...

  • Page 134: A–1 Pin Specifications For The Ports On The Ba42B System

    Pin Specifications for the Ports on the BA42B System Figure A–1 Pin Specifications for the Ports on the BA42B System +5 V dc (pullup) -12 V dc (Blue) 100 V ac to 120 V ac Tx Data + Ground (Black) Tx Data - 220 V ac to 240 V ac Ground (Black)

  • Page 135: Asynchronous Port A And Port B Pin Specifications For The Eight-Data And 16-Data Line Options

    Pin Specifications for the Ports on the BA42B System Table A–1 Asynchronous Port A and Port B Pin Specifications for the Eight- Data and 16-Data Line Options Port A Port B Contact Signal Name Signal Name LINE 0 TRANSMIT H LINE 8 TRANSMIT H LINE 0 RECEIVE H LINE 8 RECEIVE H...

  • Page 136: A–2 Asynchronous Port A And Port B Pin Specifications For The Eight-Modem Control Line Option

    Pin Specifications for the Ports on the BA42B System Table A–1 (Cont.) Asynchronous Port A and Port B Pin Specifications for the Eight-Data and 16-Data Line Options Port A Port B Contact Signal Name Signal Name LINE 4 TRANSMIT L LINE 12 TRANSMIT L LINE 4 RECEIVE L LINE 12 RECEIVE L...
  • Page 137 Pin Specifications for the Ports on the BA42B System Table A–2 (Cont.) Asynchronous Port A and Port B Pin Specifications for the Eight-Modem Control Line Option Port A Port B Contact Signal Name Signal Name LINE 0 RI CONN H LINE 4 RI CONN H —...

  • Page 138: Pin Specifications For Synchronous Port 0 And Port

    Pin Specifications for the Ports on the BA42B System Table A–2 (Cont.) Asynchronous Port A and Port B Pin Specifications for the Eight-Modem Control Line Option Port A Port B Contact Signal Name Signal Name LINE 3 TX CONN L LINE 7 TX CONN L LINE 3 RX CONN L LINE 7 RX CONN L...
  • Page 139 Pin Specifications for the Ports on the BA42B System Table A–3 (Cont.) Pin Specifications for Synchronous Port 0 and Port 1 Port 0 Port 1 Contact Signal Name Signal Name TXDATA(A) 1 P H TXDATA(A) 2 P H TXDATA 1 P L TXDATA 2 P L RTS/C A 1 P L RTS/C A 2 P L...
  • Page 140 Pin Specifications for the Ports on the BA42B System Table A–3 (Cont.) Pin Specifications for Synchronous Port 0 and Port 1 Port 0 Port 1 Contact Signal Name Signal Name DSR A 1 P H DSR A 2 P H DSR B 1 P L DSR B 2 P L RTS 1 P L...

  • Page 141: Pin Specifications For The External Scsi Connector

    Pin Specifications for the Ports on the BA42B System Table A–4 Pin Specifications for the External SCSI Connector Contact Signal Name Contact Signal Name GROUND TERMPWR DB (0) L RESERVED GROUND RESERVED DB (1) L GROUND GROUND GROUND DB (2) L GROUND GROUND ATN L...

  • Page 143: B Related Documentation

    Related Documentation The following documents contain information relating to the VAX 4000 Model 100 system. Document Title Order Number VAX 4000 Model 100 Customer Letter EK–463AA–CL VAX 4000 Model 100 Customer Technical Information EK–476AA–TI VAX 4000 Model 100 Installation Information EK–465AA–IN...
  • Page 144 VAX 4000 Model 105A Operator Information EK–513AB–OP VAX 4000 Model 100 Troubleshooting and Diagnostics EK–515AB–TS Information The following documents contain information relating to the VAX 4000 Models 100/100A and 105A. Document Title Order Number VAX 4000 Model 100/100A/105A KA52/53 CPU System EK–473AB–MG...

  • Page 145: Recommended Spare Parts

    Recommended Spare Parts List Table C–1 gives a list of the recommended spare parts for the VAX 4000 Model 100/100A/105A systems that use the BA42B Enclosure. Table C–1 Recommended Spare Parts Description Part Number Quantity CPU module, KA52-AA/KA53-AA 54-21797-01/02 SCSI cable clamp...
  • Page 146 Recommended Spare Parts List Table C–1 (Cont.) Recommended Spare Parts Description Part Number Quantity Power supply unit (H7829-AA) 30-35042-01 Cable assembly, dc harness, lower shelf 17-03018-01 System power cord (USA) 17-00606-02 Terminal cable (BC16E-25) 17-00811-03 Antistatic kit 29-26246-00 DSSI power cable 17-03615-01 SCSI cable, bottom shelf 17-03587-01...
  • Page 147 Glossary Alternating current. CD–ROM Compact disc read-only memory. Central processing unit. The main unit of a computer containing the circuits that control the interpretation and execution of instructions. The CPU holds the main storage, arithmetic unit, and special registers. Direct current. Electrostatic discharge.
  • Page 148 jumper wire A short length of wire used to complete a circuit temporarily or to bypass a circuit. Light emitting diode. Modified modular jack. module A unit that contains electrical components and electrically conductive pathways between components. port A physical connector. Root mean square.
  • Page 149 Index Communications devices list, 1–15 Communications options Accessory tray, 2–5 list of, 1–15 Air exhaust, 1–11 ports for, 1–3, 1–7 Air flow unique to Model 100 typical value, 1–11 ports for, 1–5 Air intake, 1–11 unique to Models 100A/105A Altitude ports for, 1–6 nonoperating, 2–4 Configuration, 1–12 to 1–14...
  • Page 150 Electrostatic discharge See ESD, 2–3 Enclosure DHW42 description of, 1–1 removing, 3–64 removing cover, 3–5 DHW42 input/output cable removing, 3–65 effects of, 2–3 DHW42 input/output module protection, 2–3 removing, 3–66 Ethernet loopback connector DHW42 logic board Model 100 removing, 3–64 standard Ethernet, 2–12 Dimensions Ethernet switch...
  • Page 151 Memory, 1–12 expansion increments, 1–12 modules, 1–12, 3–6 Indicators Memory expansion connectors function of, 1–7 identification of, 1–12 power OK, 1–3 Mounting bracket system unit, 1–3, 1–7 RF-series, 3–33 Input/output module RF31T/RF35/RF36, 3–33 DHW42, removing, 3–66 RRD42 CD–ROM, 3–39 DSW42, removing, 3–62 RRD43 CD–ROM, 3–45 Installation RX26, 3–15...
  • Page 152 Ports RX26 diskette drive unique to Model 100 (cont’d) mounting bracket, 3–15 identifying, 1–5 removing, 3–13 location of, 1–5 RX26 FDI/SCSI board SCSI, 1–5 removing, 3–14 unique to Models 100A/105A SCSI ID setting, 3–16 DSSI, 1–6 identifying, 1–6 location of, 1–6 SCSI, 1–6 SCSI cable Power cord...
  • Page 153 TZ30 tape drive (cont’d) System configuration SCSI ID setting, 3–22 guidelines for, 1–12 TZK10/TZK11 tape drive System loopback connectors, C–1 mounting bracket, 3–25 System unit removing, 3–23 air exhaust, 1–11 SCSI ID setting, 3–26 air intake, 1–11 clearance, 2–7 connectors, 1–3 controls, 1–3 Upper drive-mounting shelf dimensions, 2–1...
  • Page 155 Reader’s Comments VAX 4000 BA42B Enclosure Maintenance EK–472AB–MG. B01 Your comments and suggestions help us improve the quality of our publications. Thank you for your assistance. I rate this manual’s: Excellent Good Fair Poor Accuracy (product works as manual says)
  • Page 156 United States BUSINESS REPLY MAIL FIRST CLASS PERMIT NO. 33 MAYNARD MASS. POSTAGE WILL BE PAID BY ADDRESSEE DIGITAL EQUIPMENT CORPORATION Information Design and Consulting MRO1–3/K10 200 FOREST STREET MARLBORO, MA 01752-3011 Do Not Tear – Fold Here...

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