Compaq AlphaServer ES45 User manual

Compaq Computer Corporation
AlphaServer ES45
Service Guide
Order Number: EK-ES450-SV. A01
This manual is for service providers and self-maintenance
customers responsible for ES45 systems.

First Printing, July 2001
© 2001 Compaq Computer Corporation
Compaq, the Compaq logo, Compaq Insight Manager, AlphaServer, StorageWorks, and TruCluster
Registered in U.S. Patent and Trademark Office. OpenVMS and Tru64 are trademarks of Compaq
Information Technologies Group, L.P. in the United States and other countries.
Linux is a registered trademark of Linus Torvalds in several countries. UNIX is a trademark of The
Open Group in the United States and other countries. All other product names mentioned herein may
be trademarks of their respective companies.
Compaq shall not be liable for technical or editorial errors or omissions contained herein. The
information in this document is provided “as is” without warranty of any kind and is subject to change
without notice. The warranties for Compaq products are set forth in the express limited warranty
statements accompanying such products. Nothing herein should be construed as constituting an
additional warranty.
FCC Notice
This equipment generates, uses, and may emit radio frequency energy. The equipment has been type
tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of FCC
rules, which are designed to provide reasonable protection against such radio frequency interference.
Operation of this equipment in a residential area may cause interference in which case the user at his
own expense will be required to take whatever measures may be required to correct the interference.
Any modifications to this device—unless expressly approved by the manufacturer—can void the
user’s authority to operate this equipment under part 15 of the FCC rules.
Modifications
The FCCrequiresthe user to be notified that any changes or modifications made to this device that are
not expressly approved by Compaq Computer Corporation may void the user's authority to operate the
equipment.
Cables
Connections to this device must be made with shielded cables with metallic RFI/EMI connector hoods
in order to maintain compliance with FCC Rules and Regulations.
Taiwanese Notice

Japanese Notice
Canadian Notice
This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment
Regulations.
Avis Canadien
Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel
brouilleur du Canada.
European Union Notice
Products with the CE Marking comply with both the EMC Directive (89/336/EEC) and the Low
Voltage Directive (73/23/EEC) issued by the Commission of the European Community.
Compliance with these directives implies conformity to the following European Norms (in brackets are
the equivalent international standards):
EN55022 (CISPR 22) - Electromagnetic Interference
EN50082-1 (IEC801-2, IEC801-3, IEC801-4) - Electromagnetic Immunity
EN60950 (IEC950) - Product Safety
Warning!
Thisis a Class A product. In a domestic environment this product may cause radio interference in
which case the user may be required to take adequate measures.
Achtung!
Dieses ist ein Gerät der Funkstörgrenzwertklasse A. In Wohnbereichen können bei Betrieb dieses
Gerätes Rundfunkstörungen auftreten, in welchen Fällen der Benutzer für entsprechende
Gegenmaßnahmen verantwortlich ist.
Attention!
Ceci est un produit de Classe A. Dans un environnement domestique, ce produit risque de créer des
interférences radioélectriques, il appartiendra alors à l'utilisateur de prendre les mesures spécifiques
appropriées.

v
Contents
Preface ....................................................................................................................xvii
Chapter 1 System Overview
1.1 System Architecture.............................................................................. 1-2
1.2 System Enclosures ................................................................................ 1-4
1.3 System Chassis—Front View/Top View................................................ 1-6
1.4 System Chassis—Rear View ................................................................. 1-7
1.5 Hot Swap Module.................................................................................. 1-9
1.6 I/O Ports and Slots .............................................................................. 1-10
1.7 Control Panel ...................................................................................... 1-12
1.8 System Motherboard........................................................................... 1-14
1.9 CPU Card............................................................................................ 1-16
1.10 Memory Architecture and Options...................................................... 1-17
1.11 PCI Backplane..................................................................................... 1-19
1.12 Remote System Management Logic.................................................... 1-21
1.12.1 System Power Controller (SPC).................................................... 1-23
1.12.2 Remote Management Console (RMC)........................................... 1-24
1.13 Power Supplies.................................................................................... 1-25
1.14 Fans..................................................................................................... 1-27
1.15 Removable Media Storage................................................................... 1-29
1.16 Hard Disk Drive Storage..................................................................... 1-30
1.17 System Access ..................................................................................... 1-31
1.18 Console Terminal ................................................................................ 1-33
Chapter 2 Troubleshooting
2.1 Questions to Consider ........................................................................... 2-2
2.2 Diagnostic Tables.................................................................................. 2-3
2.3 Service Tools and Utilities .................................................................... 2-9
2.3.1 Error Handling/Logging Tools (Compaq Analyze).......................... 2-9
2.3.2 Loopback Tests................................................................................ 2-9

vi
2.3.3 SRM Console Commands................................................................ 2-9
2.3.4 Remote Management Console (RMC) ........................................... 2-10
2.3.5 Crash Dumps ................................................................................ 2-10
2.3.6 Revision and Configuration Management Tool (RCM)................. 2-10
2.4 Q-Vet Installation Verification............................................................ 2-11
2.4.1 Installing Q-Vet ............................................................................ 2-13
2.4.2 Running Q-Vet.............................................................................. 2-15
2.4.3 Reviewing Results of the Q-Vet Run............................................. 2-17
2.4.4 De-Installing Q-Vet....................................................................... 2-19
2.5 Information Resources ........................................................................ 2-20
2.5.1 Compaq Service Tools CD.............................................................. 2-20
2.5.2 ES45 Service HTML Help File....................................................... 2-20
2.5.3 Alpha Systems Firmware Updates ................................................ 2-20
2.5.4 Fail-Safe Loader............................................................................. 2-21
2.5.5 Software Patches............................................................................ 2-21
2.5.6 Learning Utility ............................................................................. 2-21
2.5.7 Late-Breaking Technical Information ........................................... 2-21
2.5.8 Supported Options ......................................................................... 2-22
Chapter 3 Power-Up Diagnostics and Display
3.1 Overview of Power-Up Diagnostics....................................................... 3-2
3.2 System Power-Up Sequence.................................................................. 3-3
3.3 Power-Up Displays................................................................................ 3-6
3.3.1 SROM Power-Up Display ............................................................... 3-6
3.3.2 SRM Console Power-Up Display................................................... 3-10
3.3.3 SRM Console Event Log ............................................................... 3-13
3.4 Power-Up Error Messages .................................................................. 3-14
3.4.1 SROM Messages with Beep Codes................................................ 3-14
3.4.2 Checksum Error............................................................................ 3-16
3.4.3 No MEM Error.............................................................................. 3-18
3.4.4 RMC Error Messages.................................................................... 3-19
3.4.5 SROM Error Messages.................................................................. 3-22
3.5 Forcing a Fail-Safe Floppy Load......................................................... 3-24
3.6 Updating the RMC.............................................................................. 3-26

vii
Chapter 4 SRM Console Diagnostics
4.1 Diagnostic Command Summary ........................................................... 4-2
4.2 buildfru.................................................................................................. 4-6
4.3 cat el and more el ................................................................................ 4-10
4.4 clear_error........................................................................................... 4-11
4.5 crash.................................................................................................... 4-12
4.6 deposit and examine............................................................................ 4-13
4.7 exer...................................................................................................... 4-17
4.8 floppy_write......................................................................................... 4-22
4.9 grep ..................................................................................................... 4-23
4.10 hd......................................................................................................... 4-25
4.11 info....................................................................................................... 4-27
4.12 Kill and Kill_diags .............................................................................. 4-41
4.13 memexer.............................................................................................. 4-42
4.14 memtest............................................................................................... 4-44
4.15 net ....................................................................................................... 4-49
4.16 nettest ................................................................................................. 4-51
4.17 set sys_serial_num .............................................................................. 4-55
4.18 show error ........................................................................................... 4-56
4.19 show fru............................................................................................... 4-59
4.20 show_status......................................................................................... 4-62
4.21 sys_exer............................................................................................... 4-64
4.22 test....................................................................................................... 4-66
Chapter 5 Error Logs
5.1 Error Log Analysis with Compaq Analyze............................................ 5-2
5.1.1 WEB Enterprise Service (WEBES) Director................................... 5-4
5.1.2 Using Compaq Analyze................................................................... 5-5
5.1.3 Bit to Test ..................................................................................... 5-10
5.2 Fault Detection and Reporting............................................................ 5-17
5.3 Machine Checks/Interrupts................................................................. 5-19
5.3.1 Error Logging and Event Log Entry Format................................ 5-21
5.4 Environmental Errors Captured by SRM ........................................... 5-23

viii
Chapter 6 System Configuration and Setup
6.1 System Consoles.................................................................................... 6-2
6.1.1 Selecting the Display Device........................................................... 6-3
6.1.2 Setting the Control Panel Message................................................. 6-4
6.2 Displaying the Hardware Configuration............................................... 6-5
6.3 Setting Environment Variables ............................................................ 6-6
6.4 Setting Automatic Booting.................................................................. 6-16
6.4.1 Setting the Operating System to Auto Start ................................ 6-16
6.5 Changing the Default Boot Device...................................................... 6-17
6.6 Setting SRM Security.......................................................................... 6-18
6.7 Configuring Devices ............................................................................ 6-20
6.7.1 CPU Configuration ....................................................................... 6-21
6.7.2 Memory Configuration.................................................................. 6-23
6.7.3 PCI Configuration......................................................................... 6-29
6.7.4 PCI Module LEDs ......................................................................... 6-31
6.7.5 Power Supply Configurations ....................................................... 6-32
6.9 Booting Linux...................................................................................... 6-34
Chapter 7 Using the Remote Management Console
7.1 RMC Overview ...................................................................................... 7-2
7.2 Operating Modes................................................................................... 7-4
7.2.1 Bypass Modes.................................................................................. 7-6
7.3 Terminal Setup ..................................................................................... 7-9
7.4 Connecting to the RMC CLI................................................................ 7-10
7.5 SRM Environment Variables for COM1 ............................................. 7-12
7.6 RMC Command-Line Interface........................................................... 7-13
7.6.1 Defining the COM1 Data Flow ..................................................... 7-15
7.6.2 Displaying the System Status....................................................... 7-16
7.6.3 Displaying the System Environment............................................ 7-18
7.6.4 Dumping DPR Data...................................................................... 7-20
7.6.5 Power On and Off, Reset, and Halt .............................................. 7-22
7.6.6 Configuring Remote Dial-In.......................................................... 7-24
7.6.7 Configuring Dial-Out Alert........................................................... 7-26
7.6.8 Resetting the Escape Sequence .................................................... 7-29
7.7 Resetting the RMC to Factory Defaults.............................................. 7-30
7.8 Troubleshooting Tips........................................................................... 7-32

ix
Chapter 8 FRU Removal and Replacement
8.1 FRUs ..................................................................................................... 8-3
8.1.1 Power Cords.................................................................................... 8-6
8.1.2 FRU Locations ................................................................................ 8-7
8.1.3 Important Information Before Replacing FRUs ............................. 8-9
8.2 Removing Enclosure Panels................................................................ 8-11
8.3 Accessing the System Chassis in a Cabinet........................................ 8-15
8.4 Removing Covers from the System Chassis........................................ 8-17
8.5 Power Supply ...................................................................................... 8-21
8.6 Fans..................................................................................................... 8-23
8.7 Universal Hard Disk Drives................................................................ 8-25
8.8 Removing the Shipping Bracket ......................................................... 8-28
8.9 CPUs ................................................................................................... 8-30
8.10 Memory DIMMs .................................................................................. 8-33
8.10.1 Determining Memory Configuration ............................................ 8-37
8.11 PCI Cards............................................................................................ 8-39
8.11.1 Replacing the PCI Hot Swap Module ........................................... 8-43
8.12 OCP Assembly..................................................................................... 8-44
8.13 Installing Disk Cages.......................................................................... 8-45
8.13 Cabling a Second Disk Drive Cage...................................................... 8-49
8.13 Adding or Replacing Removable Media .............................................. 8-50
8.14 Floppy Drive........................................................................................ 8-53
8.15 I/O Connector Assembly...................................................................... 8-55
8.16 PCI Backplane..................................................................................... 8-57
8.17 System Motherboard........................................................................... 8-62
8.18 Power Harness .................................................................................... 8-65
Appendix A SRM Console Commands
Appendix B Jumpers and Switches
B.1 RMC and SPC Jumpers on System Motherboard.................................B-2
B.2 TIG/FSL Jumpers on System Motherboard..........................................B-4
B.3 Clock Generator Switch Settings ..........................................................B-7
B.4 Jumper on PCI Board............................................................................B-9
B.5 Setting Jumpers..................................................................................B-11

x
Appendix C DPR Address Layout
Appendix D Registers
D.1 Ibox Status Register (I_STAT)............................................................. D-2
D.2 Memory Management Status Register (MM_STAT) .......................... D-5
D.3 Dcache Status Register (DC_STAT)..................................................... D-6
D.4 Cbox Read Register .............................................................................. D-7
D.5 Exception Address Register (EXC_ADDR) .......................................... D-9
D.6 Interrupt Enable and Current Processor Mode Register (IER_CM).. D-10
D.7 Interrupt Summary Register (ISUM) ................................................ D-12
D.8 PAL Base Register (PAL_BASE) ....................................................... D-14
D.9 Ibox Control Register (I_CTL)............................................................ D-15
D.10 Process Context Register (PCTX)....................................................... D-20
D.11 21274 Cchip Miscellaneous Register (MISC) ..................................... D-23
D.12 21274 Cchip CPU Device Interrupt Request Register (DIRn, n=0,1,2,3)
............................................................................................................ D-26
D.13 21274 Array Address Registers (AAR0–AAR3).................................. D-27
D.14 Pchip System Error Register (SERROR) ........................................... D-29
D.15 Pchip A/G PCI Error Register (GPERROR, APERROR) ................... D-31
D.16 Pchip AGP Error Register (AGPERROR) .......................................... D-35
D.17 DPR Registers for 680 Correctable Machine Check Logout Frames . D-37
D.18 DPR Power Supply Status Registers ................................................. D-40
D.19 DPR 680 Fatal Registers.................................................................... D-41
D.20 CPU and System Uncorrectable Machine Check Logout Frame ....... D-42
D.21 Console Data Log Event Environmental Error Logout Frame (680
Uncorrectable).................................................................................... D-43
D.22 CPU and System Correctable Machine Check Logout Frame ........... D-44
D.23 Environmental Error Logout Frame (680 Correctable) ..................... D-45
D.24 Platform Logout Frame Register Translation.................................... D-46
Appendix E Isolating Failing DIMMs
E.1 Information for Isolating Failures ........................................................E-2
E.2 DIMM Isolation Procedure....................................................................E-3
E.3 EV68 Single-Bit Errors .......................................................................E-19

xi
Examples
3–1 Sample SROM Power-Up Display......................................................... 3-6
3–2 SRM Power-Up Display ...................................................................... 3-10
3–3 Sample Console Event Log.................................................................. 3-13
3–4 Checksum Error and Fail-Safe Load................................................... 3-16
4–1 buildfru.................................................................................................. 4-6
4–2 more el................................................................................................. 4-10
4–3 clear_error........................................................................................... 4-11
4–4 deposit and examine............................................................................ 4-13
4–5 exer...................................................................................................... 4-17
4–6 floppy_write......................................................................................... 4-22
4–7 grep ..................................................................................................... 4-23
4–8 hd......................................................................................................... 4-25
4–9 info 0.................................................................................................... 4-27
4–10 info 1.................................................................................................... 4-29
4–11 info 2.................................................................................................... 4-30
4–12 info 3.................................................................................................... 4-31
4–13 info 4.................................................................................................... 4-33
4–14 info 5.................................................................................................... 4-34
4–15 info 6.................................................................................................... 4-36
4–16 info 7.................................................................................................... 4-38
4–17 info 8.................................................................................................... 4-40
4–18 kill and kill_diags................................................................................ 4-41
4–19 memexer.............................................................................................. 4-42
4–20 memtest............................................................................................... 4-44
4–21 net -ic and net -s.................................................................................. 4-49
4–22 nettest ................................................................................................. 4-51
4–23 set sys_serial_num .............................................................................. 4-55
4–24 show error ........................................................................................... 4-56
4–25 show fru............................................................................................... 4-59
4–26 show status.......................................................................................... 4-62
4–27 sys_exer............................................................................................... 4-64
4–28 test -lb ................................................................................................. 4-66
5–1 Console Level Environmental Error Logout Frame............................ 5-23
6–1 set ocp_text............................................................................................ 6-4
6–2 Set Password....................................................................................... 6-18
6–3 set secure............................................................................................. 6-19
6–4 clear password..................................................................................... 6-19
6–5 Linux Boot Output .............................................................................. 6-35
7–1 set com1_mode .................................................................................... 7-15

xii
7–2 status................................................................................................... 7-16
7–3 env....................................................................................................... 7-18
7–4 dump ................................................................................................... 7-20
7–5 power on/off......................................................................................... 7-22
7–6 halt in/out............................................................................................ 7-23
7–7 reset..................................................................................................... 7-23
7–8 Dial-In Configuration.......................................................................... 7-24
7–9 Dial-Out Alert Configuration.............................................................. 7-26
7–10 set escape ............................................................................................ 7-29
Figures
1–1 System Block Diagram.......................................................................... 1-2
1–2 ES45 Systems........................................................................................ 1-4
1–3 Components Top/Front View (Pedestal/Rackmount Orientation) ........ 1-6
1–4 Rear Components (Pedestal/Rackmount Orientation).......................... 1-7
1–5 Hot Swap Module.................................................................................. 1-9
1–6 Rear Connectors.................................................................................. 1-10
1–7 Control Panel ...................................................................................... 1-12
1–8 Component and Connector Locations ................................................. 1-14
1–9 CPU Card............................................................................................ 1-16
1–10 Memory Architecture .......................................................................... 1-17
1–11 I/O Control Logic................................................................................. 1-19
1–12 Remote System Management Logic Diagram..................................... 1-21
1–13 Power Supplies.................................................................................... 1-25
1–14 System Fans........................................................................................ 1-27
1–15 Removable Media Drive Area ............................................................. 1-29
1–16 Hard Disk Storage Cage with Drives (Pedestal/Rack)........................ 1-30
1–17 System Lock and Key.......................................................................... 1-31
1–18 Console Terminal Connections (Local)................................................ 1-33
3–1 Power-Up Sequence............................................................................... 3-4
3–2 Function Jumpers ............................................................................... 3-24
5–1 Compaq Analyze Initial Screen............................................................. 5-5
5–2 Problem Reports Screen........................................................................ 5-6
5–3 Compaq Analyze Problem Report Details............................................. 5-7
5–4 Compaq Analyze Problem Report Details (Continued)......................... 5-8
6–1 CPU Slot Locations (Pedestal/Rack) ................................................... 6-21
6–2 CPU Slot Locations (Tower)................................................................ 6-22
6–3 Stacked and Unstacked DIMMs ......................................................... 6-24
6–4 Memory Configuration (Pedestal/Rack) .............................................. 6-27

xiii
6–5 Memory Configuration (Tower)........................................................... 6-28
6–6 PCI Slot Locations (Pedestal/Rack)..................................................... 6-29
6–7 PCI Slot Voltages and Hose Numbers................................................. 6-30
6–8 PCI Slot Locations (Tower) ................................................................. 6-31
6–9 PCI Status LEDs................................................................................. 6-32
6–10 Power Supply Locations ...................................................................... 6-33
7–1 Data Flow in Through Mode ................................................................. 7-4
7–2 Data Flow in Bypass Mode.................................................................... 7-6
7–3 Terminal Setup for RMC (Tower View) ............................................... 7-9
7–4 RMC Jumpers (Default Positions) ...................................................... 7-30
8–1 FRUs — Front/Top (Pedestal/Rack View)............................................. 8-7
8–2 FRUs — Rear (Pedestal/Rack View) ..................................................... 8-8
8–3 Enclosure Panel Removal (Tower) ...................................................... 8-11
8–4 Enclosure Panel Removal (Pedestal)................................................... 8-13
8–5 Accessing the Chassis in a Cab........................................................... 8-15
8–6 Moving the Inner Race Forward ......................................................... 8-16
8–7 Covers on the System Chassis (Tower) ............................................... 8-19
8–8 Covers on the System Chassis (Pedestal/Rack) .................................. 8-20
8–9 Replacing or Adding a Power Supply.................................................. 8-21
8–10 Replacing Fans.................................................................................... 8-23
8–11 Replacing or Adding a Hard Drive...................................................... 8-26
8–12 Removing the Shipping Bracket ......................................................... 8-28
8–13 Adding or Replacing CPU Cards......................................................... 8-30
8–14 Installing and Removing MMBs and DIMMs ..................................... 8-34
8–15 Aligning DIMM in MMB..................................................................... 8-36
8–16 Pedestal/Rack Memory Configuration ................................................ 8-37
8–17 Tower Memory Configuration ............................................................. 8-38
8–18 Installing or Replacing a PCI Card..................................................... 8-40
8–19 PCI Module Hot Swap Assembly ........................................................ 8-42
8–20 Replacing the OCP Assembly.............................................................. 8-44
8–21 Cabling and Preparation for Installing Disk Cages............................ 8-45
8–22 Disk Cage Installation ........................................................................ 8-47
8–23 Cabling a Second Disk Cage ............................................................... 8-49
8–24 Adding a 5.25-Inch Device .................................................................. 8-50
8–25 Replacing the Floppy Drive................................................................. 8-53
8–26 Replacing the I/O Connector Assembly............................................... 8-55

xiv
8–27 Cables Connected to PCI Backplane................................................... 8-57
8–28 Removing the Separators.................................................................... 8-59
8–29 Replacing the PCI Backplane ............................................................. 8-60
8–30 Replacing the System Motherboard.................................................... 8-62
8–31 Replacing the Power Harness ............................................................. 8-65
B–1 RMC and SPC Jumpers ........................................................................B-2
B–2 TIG/SROM Jumpers..............................................................................B-4
B–3 CSB Switchpack E16.............................................................................B-7
B–4 PCI Board Jumpers...............................................................................B-9
Tables
1 Compaq AlphaServer ES45 Documentation ....................................... xviii
1–1 Fan Descriptions ................................................................................. 1-28
2–1 Power Problems..................................................................................... 2-4
2–2 Problems Getting to Console Mode ....................................................... 2-5
2–3 Problems Reported by the Console........................................................ 2-6
2–4 Boot Problems ....................................................................................... 2-7
2–5 Errors Reported by the Operating System............................................ 2-8
3–1 Error Beep Codes ................................................................................ 3-14
3–2 RMC Fatal Error Messages................................................................. 3-19
3–3 RMC Warning Messages..................................................................... 3-20
3–4 SROM Error Messages........................................................................ 3-22
4–1 Summary of Diagnostic and Related Commands.................................. 4-2
4–2 Show Error Message Translation........................................................ 4-58
4–3 Bit Assignments for Error Field.......................................................... 4-61
5–1 Common Event Header Example Table (CEH) V2.0 .......................... 5-11
5–2 ES45 Fault Detection and Correction ................................................. 5-18
5–3 Machine Checks/Interrupts................................................................. 5-19
5–4 Sample Error Log Event Structure Map (ES45 with 10 PCI Slots).... 5-22
6–1 SRM Environment Variables ................................................................ 6-8
7–1 Status Command Fields...................................................................... 7-17
7–2 Elements of Dial String and Alert String ........................................... 7-28
7–3 RMC Troubleshooting ......................................................................... 7-32

xv
8–1 FRU List................................................................................................ 8-3
8–2 Country-Specific Power Cords............................................................... 8-6
A–1 SRM Commands Used on ES45 Systems..............................................A-1
B–1 RMC/SPC Jumper Settings...................................................................B-3
B–2 TIG/FSL Jumper Descriptions..............................................................B-5
B–3 Firmware Function Table (FIR_FUNC.................................................B-5
B–4 Clock Generator Settings......................................................................B-8
B–5 PCI Board Jumper Descriptions .........................................................B-10
C–1 DPR Address Layout.............................................................................C-2
D–1 Ibox Status Register Fields.................................................................. D-2
D–2 Memory Management Status Register Fields...................................... D-5
D–3 Dcache Status Register Fields ............................................................. D-6
D–4 Cbox Read Register Fields ................................................................... D-7
D–5 IER_CM Register Fields .................................................................... D-11
D–6 ISUM Register Fields......................................................................... D-13
D–7 PAL_BASE Register Fields................................................................ D-14
D–8 I_CTL Register Fields ........................................................................ D-16
D–9 PCTX Register Fields......................................................................... D-21
D–10 21274 Cchip Miscellaneous Register Fields....................................... D-24
D–11 21274 Device Interrupt Request Register Fields ............................... D-26
D–12 21274 Array Address Register (AAR) ................................................ D-27
D–13 Pchip System Error Register.............................................................. D-29
D–14 Pchip Error Register .......................................................................... D-32
D–15 Pchip AGP Error Register.................................................................. D-35
D–16 DPR Locations A0:A9......................................................................... D-37
D–17 Nine Bytes Read from Power Supply................................................. D-40
D–18 DPR 680 Fatal Registers.................................................................... D-41
D–19 CPU and System Uncorrectable Machine Check Logout Frame ....... D-42
D–20 Console Data Log Event Environmental Error Logout Frame (680
Uncorrectable).................................................................................... D-43
D–21 CPU and System Correctable Machine Check Logout Frame ......... D-44
D–22 Environmental Error Logout Frame.................................................. D-45
D–23 Bit Definition of Logout Frame Registers.......................................... D-46

xvi
E–1 Information Needed to Isolate Failing DIMMs.....................................E-2
E–2 Determining the Real Failed Array for 4-Way Interleaving.................E-3
E–3 Determining the Real Failed Array for 2-Way Interleaving.................E-3
E–4 Description of DPR Locations 80, 82, 84, and 86 ..................................E-4
E–5 Failing DIMM Lookup Table.................................................................E-6
E–6 Syndrome to Data Check Bits Table...................................................E-19

xvii
Preface
Intended Audience
This manual is for service providers and self-maintenance customers who are
responsible for servicing ES45 systems.
Document Structure
This manual uses a structured documentation design. Topics are organized into
small sections, usually consisting of two facing pages. Most topics begin with an
abstract that provides an overview of the section, followed by an illustration or
example. The facing page contains descriptions, procedures, and syntax
definitions.
This manual has eight chapters and five appendixes.
• Chapter 1, System Overview, provides system overview information.
• Chapter 2, Troubleshooting, describes the starting points for diagnosing problems.
• Chapter 3, Power-up Diagnostics and Display, describes the power-up process and
RMC, SROM, and SRM power-up diagnostics.
• Chapter 4, SRM Console Diagnostics, provides troubleshooting information with
the SRM console.
• Chapter5,ErrorLogs,providesinformationforinterpretingerrorlogs.
• Chapter 6, System Configuration and Setup, describes how to configure and set up
systems.
• Chapter 7, Using the Remote Management Console, provides information for
managing the system through remote management console.
• Chapter 8, FRU Removal and Replacement, describes the procedures for removing
and replacing FRUs.

xviii
• Appendix A, SRM Console Commands, lists the SRM console commands most
frequently used with the ES4x family of systems.
• Appendix B, Jumpers and Switches, lists and describes the configuration jumpers
and switches on the system motherboard and PCI board.
• Appendix C, DPR Address Layout, shows the address layout of the dual-port RAM.
• Appendix D, Registers, describes 21264 EV68 internal processor registers.
• Appendix E, Isolating Failing DIMMs, explains how to manually isolate a failing
DIMM from the failing address and failing data bits.
Documentation Titles
Table 1 Compaq AlphaServer ES45 Documentation
Title Order Number
User Documentation Kit QA–6NUAB–G8
Owner’s Guide EK–ES450–UG
Documentation CD (6 languages) AG–RPJ8A–TS
Maintenance Kit QA–6NUAA–G8
Service Guide EK–ES450–SV
Service Guide HTML CD (IPBs
included)
AG–RPJ5A–TS
Loose Piece Items
Basic Installation Card EK–ES450–PD
Rackmount Installation Guide EK–ES450–RG
Rackmount Installation Template ES–ES450–TP
Information on the Internet
Visit the Compaq Web site at www.compaq.com for service tools and more
information about the AlphaServer ES45 system.

System Overview 1-1
Chapter 1
System Overview
This chapter provides an overview of the system in these sections:
• System Architecture
• System Enclosures
• System Chassis—Front View/Top View
• System Chassis—Rear View
• Hot Swap Module
• I/O Ports and Slots
• Control Panel
• System Motherboard
• CPU Card
• Memory Architecture and Options
• PCI Backplane
• Remote System Management Logic
• Power Supplies
• Fans
• Removable Media Storage
• Hard Disk Drive Storage
• System Access
• Console Terminal

1-2 ES45 Service Guide
1.1 System Architecture
The system uses a switch-based interconnect system that maintains
constant performance even as the number of transactions multiplies.
Figure 1–1 System Block Diagram
C-chip
First
CPU
8 D-chips
P-chip
P-chip
1 or 2
Memory
Arrays
Memory
Arrays
64 bit PCI
64 bit PCI
64 bit PCI
Command, Address, and Control Lines for Each Memory Array
Control Lines for D-chips
Memory
Data
Bus
CPU
Data
Bus
CAPbus
PADBus
PKW1400A-99
1 or 2
CPUs
B-cache
64 bit PCI