Digital Equipment VAX 4000 Guide

VAX4000
BA42BEnclosureMaintenance
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

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.
© Digital Equipment Corporation 1994. All Rights Reserved.
The postpaid Reader’s Comments forms at the end of this document request your critical
evaluation to assist in preparing future documentation.
The following are trademarks of Digital Equipment Corporation: DEC, Digital, MicroVAX,
OpenVMS, Q–bus, ThinWire, TK, VAX, VAX DOCUMENT, VT, and the DIGITAL logo.
All other trademarks and registered trademarks are the property of their respective holders.
S2484
This document was prepared using VAX DOCUMENT Version 2.1.

Contents
Preface ..................................................... xi
1 Enclosure Description
1.1 Mass Storage Device Areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2
1.2 Controls, Indicators, Ports, and Connectors . . . . . . . . . . . . . . . . . 1–3
1.3 Power and Signal Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–9
1.4 AirCirculation....................................... 1–11
1.5 Configuration Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–12
1.5.1 Memory Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–12
1.5.2 Communications Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–15
1.5.3 MassStorageDevices............................... 1–17
2 Installation Procedures
2.1 PreparingtheSite .................................... 2–1
2.1.1 EnclosureDimensions .............................. 2–1
2.1.2 AdditionalEquipment .............................. 2–2
2.1.3 Operating Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–3
2.1.4 Electrostatic Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–3
2.1.5 HeatDissipation .................................. 2–3
2.1.6 Temperature, Humidity, and Altitude Ranges . . . . . . . . . . . . 2–4
2.1.7 Electrical Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–4
2.2 UnpackingtheSystem................................. 2–5
2.3 Installing the BA42B System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–7
2.3.1 Installing a BA42B-Based VAX 4000 Model 100 . . . . . . . . . . 2–7
2.3.1.1 Identifying the Ports and Connectors on the System . . . . 2–7
2.3.1.2 Connecting the Console Terminal . . . . . . . . . . . . . . . . . . . 2–7
2.3.1.3 Connecting the ThinWire Terminator or Loopback
Connector..................................... 2–10
2.3.1.4 Connecting the SCSI Terminator . . . . . . . . . . . . . . . . . . . 2–13
2.3.1.5 Connecting the DSSI Terminator . . . . . . . . . . . . . . . . . . . 2–14
2.3.1.6 Connecting the System Unit Power Cord . . . . . . . . . . . . . 2–15
iii

2.3.1.7 Turning On the System . . . . . . . . . . . . . . . . . . . . . . . . . . 2–16
2.3.2 Installing a BA42B-Based VAX 4000 Model 100A/105A . . . . . 2–17
2.3.2.1 Identifying the Ports and Connectors on the System . . . . 2–17
2.3.2.2 Connecting the Console Terminal . . . . . . . . . . . . . . . . . . . 2–17
2.3.2.3 Connecting the ThinWire Terminator or Loopback
Connector..................................... 2–20
2.3.2.4 Connecting the SCSI Terminator . . . . . . . . . . . . . . . . . . . 2–23
2.3.2.5 Connecting the DSSI Terminator . . . . . . . . . . . . . . . . . . . 2–24
2.3.2.6 Connecting the System Unit Power Cord . . . . . . . . . . . . . 2–25
2.3.2.7 Turning On the System . . . . . . . . . . . . . . . . . . . . . . . . . . 2–26
3 Removing and Replacing Field Replaceable Units
3.1 Removing the Enclosure Cover . . . . . . . . . . . . . . . . . . . . . . . . . . 3–5
3.2 Removing an MS44 or MS44L Memory Module . . . . . . . . . . . . . . 3–6
3.3 Removing the Upper Drive-Mounting Shelf . . . . . . . . . . . . . . . . . 3–9
3.4 Removing the RX26 Diskette Drive Assembly . . . . . . . . . . . . . . . 3–13
3.4.1 Removing the RX26 FDI/SCSI Board . . . . . . . . . . . . . . . . . . . 3–14
3.4.2 Separating the RX26 Diskette Drive from the Mounting
Bracket ......................................... 3–15
3.4.3 Setting the SCSI ID on the Replacement RX26 FDI/SCSI
Board........................................... 3–16
3.5 Removing a TZ30 Tape Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–19
3.5.1 Separating the TZ30 Tape Drive from the Mounting
Bracket ......................................... 3–21
3.5.2 Setting the SCSI ID on the Replacement TZ30 Tape
Drive ........................................... 3–22
3.6 Removing a TZK10/TZK11 Tape Drive . . . . . . . . . . . . . . . . . . . . . 3–23
3.6.1 Separating the TZK10/TZK11 Tape Drive from the Mounting
Bracket ......................................... 3–25
3.6.2 Setting the SCSI ID of the Replacement TZK10/TZK11 Tape
Drive ........................................... 3–26
3.7 Removing a TLZ06/TLZ07 Tape Drive . . . . . . . . . . . . . . . . . . . . . 3–28
3.7.1 Separating the TLZ06/TLZ07 Tape Drive from the Mounting
Bracket ......................................... 3–30
3.7.2 Setting the SCSI ID and Option Switches of the Replacement
TLZ06/TLZ07 Tape Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–31
3.8 Removing an RF31T/RF35/RF36 Disk Drive . . . . . . . . . . . . . . . . 3–32
3.8.1 Separating the RF-series Drive from the Mounting
Bracket ......................................... 3–33
3.8.2 SettingtheDSSIID................................ 3–35
3.9 Removing an RRD42 CD–ROM Drive . . . . . . . . . . . . . . . . . . . . . 3–37
iv

3.9.1 Separating the RRD42 CD–ROM Drive from the Mounting
Bracket ......................................... 3–39
3.9.2 Setting the SCSI ID on the Replacement RRD42 CD–ROM
Drive ........................................... 3–41
3.10 Removing an RRD43 CD–ROM Drive . . . . . . . . . . . . . . . . . . . . . 3–43
3.10.1 Separating the RRD43 CD–ROM Drive from the Mounting
Bracket ......................................... 3–45
3.10.2 Setting the SCSI ID on the Replacement RRD43 CD–ROM
Drive ........................................... 3–47
3.11 Removing the Upper and Lower Drive-Mounting Shelf
Combination......................................... 3–48
3.12 Removing the SCSI Cable from the Enclosure . . . . . . . . . . . . . . . 3–52
3.13 Removing the DSSI Cable from the Enclosure . . . . . . . . . . . . . . . 3–53
3.14 Removing the DSSI Daughter Board . . . . . . . . . . . . . . . . . . . . . . 3–55
3.14.1 ChangingtheDSSIID.............................. 3–58
3.15 Removing the DSW42 Synchronous Communications Option . . . 3–60
3.15.1 Removing the DSW42 Logic Board . . . . . . . . . . . . . . . . . . . . 3–60
3.15.2 Removing the DSW42 Input/Output Cable . . . . . . . . . . . . . . 3–61
3.15.3 Removing the DSW42 Input/Output Module . . . . . . . . . . . . . 3–62
3.16 Removing the DHW42 Asynchronous Communications
Option ............................................. 3–64
3.16.1 Removing the DHW42 Logic Board . . . . . . . . . . . . . . . . . . . . 3–64
3.16.2 Removing the DHW42 Input/Output Cable . . . . . . . . . . . . . . 3–65
3.16.3 Removing the DHW42 Input/Output Module . . . . . . . . . . . . . 3–66
3.17 Removing the CPU Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–68
3.18 Replacing the CPU Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–72
3.19 Removing the Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–73
A Pin Specifications for the Ports on the BA42B System
B Related Documentation
C Recommended Spare Parts List
v

Glossary
Index
Figures
1–1 BA42BEnclosure.................................. 1–2
1–2 Common VAX 4000 BA42B-Based Systems Controls,
Indicators, Ports, and Connectors for all Models . . . . . . . . . . 1–4
1–3 Ports and Connectors Unique to the VAX 4000 Model 100 . . . 1–5
1–4 Ports and Connectors Unique to the VAX 4000 Model
100A/105A ....................................... 1–6
1–5 PowerDistribution................................. 1–10
1–6 SignalDistribution................................. 1–11
1–7 Memory Expansion Connectors on the KA52/KA53 CPU
Module.......................................... 1–13
1–8 Identifying Appropriate Banks of SIMM Connectors . . . . . . . 1–14
1–9 Communications Options in Model 100/100A/105A
Systems ......................................... 1–16
1–10 Mass Storage Device Combinations in the BA42B
Enclosure........................................ 1–18
2–1 BA42BDimensions ................................ 2–2
2–2 System Unit and Accessory Tray Contents . . . . . . . . . . . . . . . 2–6
2–3 Connecting the Console Terminal . . . . . . . . . . . . . . . . . . . . . . 2–9
2–4 Connecting the ThinWire Terminator to the System . . . . . . . 2–11
2–5 Connecting the Standard Ethernet Loopback Connector to
theSystem....................................... 2–12
2–6 Connecting the SCSI Terminator . . . . . . . . . . . . . . . . . . . . . . 2–13
2–7 Connecting the DSSI Terminator . . . . . . . . . . . . . . . . . . . . . . 2–14
2–8 Connecting the Power Cord . . . . . . . . . . . . . . . . . . . . . . . . . . 2–15
2–9 TurningOntheSystem ............................. 2–16
2–10 Connecting the Console Terminal . . . . . . . . . . . . . . . . . . . . . . 2–19
2–11 Connecting the ThinWire Terminator to the System . . . . . . . 2–21
2–12 Connecting the Standard Ethernet Loopback Connector to
the VAX 4000 Models 100A/105A . . . . . . . . . . . . . . . . . . . . . . 2–22
2–13 Connecting the SCSI Terminator . . . . . . . . . . . . . . . . . . . . . . 2–23
2–14 Connecting the DSSI Terminator . . . . . . . . . . . . . . . . . . . . . . 2–24
2–15 Connecting the Power Cord . . . . . . . . . . . . . . . . . . . . . . . . . . 2–25
vi

2–16 TurningOntheSystem ............................. 2–26
3–1 Major FRUs in the BA42B Enclosure . . . . . . . . . . . . . . . . . . . 3–4
3–2 Removing the Enclosure Cover . . . . . . . . . . . . . . . . . . . . . . . 3–5
3–3 Memory Module Connectors on the KA52/53 CPU Module . . 3–7
3–4 Removing a Memory Module . . . . . . . . . . . . . . . . . . . . . . . . . 3–8
3–5 Removing the Upper Drive-Mounting Shelf . . . . . . . . . . . . . . 3–10
3–6 Disconnecting the DSSI Cables from the Drives . . . . . . . . . . 3–11
3–7 Removing the Upper Drive-Mounting Shelf . . . . . . . . . . . . . . 3–12
3–8 Removing the RX26 Diskette Drive Assembly . . . . . . . . . . . . 3–14
3–9 Removing the RX26 FDI/SCSI Board . . . . . . . . . . . . . . . . . . . 3–15
3–10 Separating the Mounting Bracket from the RX26 Diskette
Drive ........................................... 3–16
3–11 Location of the SCSI ID Switches on the RX26 FDI/SCSI
Board........................................... 3–17
3–12 How to Reach the SCSI ID Switches on the RX26 FDI/SCSI
Board........................................... 3–18
3–13 Removing a TZ30 Tape Drive . . . . . . . . . . . . . . . . . . . . . . . . . 3–20
3–14 Separating the Mounting Bracket from the TZ30 Tape
Drive ........................................... 3–21
3–15 TZ30 SCSI ID Switch Locations . . . . . . . . . . . . . . . . . . . . . . . 3–22
3–16 Removing the TZK10/TZK11 Tape Drive . . . . . . . . . . . . . . . . 3–24
3–17 Separating the Mounting Bracket from the TZK10/TZK11
TapeDrive....................................... 3–25
3–18 Locations of the SCSI ID Jumper Wires on the TZK10/TZK11
TapeDrive....................................... 3–27
3–19 Removing the TLZ06/TLZ07 Tape Drive . . . . . . . . . . . . . . . . 3–29
3–20 Separating the Mounting Bracket from the TLZ06/TLZ07
TapeDrive....................................... 3–30
3–21 Locations of the SCSI ID and Option Switches on the
TLZ06/TLZ07 Tape Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–31
3–22 Removing a Sample RF31T/RF35/RF36 Disk Drive Option
................................................ 3–33
3–23 Separating the Mounting Bracket from the RF-Series
Drive ........................................... 3–34
3–24 Sample RF31T/RF35/RF36 Disk Drive Option with Mounting
Brackets......................................... 3–35
3–25 Removing the RRD42 CD–ROM Drive . . . . . . . . . . . . . . . . . . 3–38
3–26 Separating the Mounting Bracket from the RRD42 CD–ROM
Drive ........................................... 3–40
vii

3–27 RRD42 SCSI ID Jumper Wire Locations . . . . . . . . . . . . . . . . 3–42
3–28 Removing the RRD43 CD–ROM Drive . . . . . . . . . . . . . . . . . . 3–44
3–29 Separating the Mounting Bracket from the RRD43 CD–ROM
Drive ........................................... 3–46
3–30 Removing the Upper and Lower Drive-Mounting Shelf
Combination...................................... 3–49
3–31 Disconnecting the SCSI Cable . . . . . . . . . . . . . . . . . . . . . . . . 3–50
3–32 Disconnecting the DSSI Cable . . . . . . . . . . . . . . . . . . . . . . . . 3–51
3–33 Separating the Upper Drive-Mounting Shelf from the Lower
Drive-MountingShelf............................... 3–53
3–34 Removing the DSSI Cable from the Daughter Board . . . . . . . 3–54
3–35 Removing the DSSI Daughter Board . . . . . . . . . . . . . . . . . . . 3–56
3–36 Removing the DSSI Cable and Daughter Board . . . . . . . . . . . 3–57
3–37 DSSI ID Jumper Locations . . . . . . . . . . . . . . . . . . . . . . . . . . 3–59
3–38 Removing the DSW42 Logic Board . . . . . . . . . . . . . . . . . . . . 3–61
3–39 Removing the DSW42 Input/Output Cable . . . . . . . . . . . . . . 3–62
3–40 Removing the DSW42 Input/Output Module . . . . . . . . . . . . . 3–63
3–41 Removing the DHW42 Logic Board . . . . . . . . . . . . . . . . . . . . 3–65
3–42 Removing the DHW42 Input/Output Cable . . . . . . . . . . . . . . 3–66
3–43 Removing the DHW42 Input/Output Module . . . . . . . . . . . . . 3–67
3–44 Disconnecting the Cables from the CPU Module . . . . . . . . . . 3–69
3–45 Removing the CPU Module . . . . . . . . . . . . . . . . . . . . . . . . . . 3–71
3–46 Removing the Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . 3–74
A–1 Pin Specifications for the Ports on the BA42B System . . . . . . A–2
Tables
1–1 Functions of the Controls, Indicators, Ports, and
Connectors....................................... 1–7
1–2 Power Supply dc Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–9
1–3 BA42B Communications Options . . . . . . . . . . . . . . . . . . . . . . 1–15
1–4 DSW42-AA Communications Interface Support . . . . . . . . . . . 1–15
1–5 BA42B Mass Storage Devices. . . . . . . . . . . . . . . . . . . . . . . . . 1–17
2–1 Temperature, Humidity, and Altitude Ranges . . . . . . . . . . . . 2–4
2–2 BA42B Electrical Requirements . . . . . . . . . . . . . . . . . . . . . . . 2–5
2–3 TerminalSettings.................................. 2–8
2–4 TerminalSettings.................................. 2–17
3–1 Major FRUs in the BA42B Enclosure . . . . . . . . . . . . . . . . . . . 3–3
viii

3–2 RF31T/RF35/RF36 DSSI ID Jumper Wire Combinations . . . . 3–36
A–1 Asynchronous Port A and Port B Pin Specifications for the
Eight-Data and 16-Data Line Options . . . . . . . . . . . . . . . . . . A–3
A–2 Asynchronous Port A and Port B Pin Specifications for the
Eight-Modem Control Line Option . . . . . . . . . . . . . . . . . . . . . A–4
A–3 Pin Specifications for Synchronous Port 0 and Port 1 . . . . . . A–6
A–4 Pin Specifications for the External SCSI Connector . . . . . . . . A–9
C–1 Recommended Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . C–1
ix