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Isolating Failing DIMMs E-1
Appendix E
Isolating Failing DIMMs
This appendix explains how to manually isolate a failing DIMM from the failing
address and failing data bits. It also covers how to isolate single-bit errors. The
following topics are covered:
•
Information for Isolating Failures
•
DIMM Isolation Procedure
•
EV6 Single-Bit Errors
- AlphaServer ES40 1
- Contents 5
- Chapter 5 Error Logs 7
- Appendix C DPR Address Layout 9
- Appendix D Registers 9
- Examples 10
- Intended Audience 17
- Document Structure 17
- Documentation Titles 19
- Information on the Internet 19
- Chapter 1 21
- System Overview 21
- System Architecture 22
- System Enclosures 24
- Orientation) 26
- System Chassis—Rear View 27
- I/O Ports and Slots 28
- 2 3 4 5 6 30
- System Motherboard 32
- CPU Card 34
- 256 Data + 32 Check Bits 36
- Address Arrays 2 & 3 36
- Address Arrays 0 & 1 36
- Dual-Port RAM (DPR) 41
- ➋ +5 V Auxiliary 45
- Figure 1–13 System Fans 46
- Table 1–1 Fan Descriptions 47
- Removable Media Storage 48
- Hard Disk Drive Storage 49
- System Access 50
- Console Terminal 52
- Chapter 2 53
- Troubleshooting 53
- Questions to Consider 54
- Diagnostic Tables 55
- Table 2–1 Power Problems 56
- Table 2–4 Boot Problems 59
- Service Tools and Utilities 61
- 2.3.4 AlphaBIOS Menus 62
- 2.3.7 Crash Dumps 63
- Information Resources 65
- 2.4.4 Fail-Safe Loader 66
- 2.4.5 Software Patches 66
- 2.4.7 Supported Options 67
- Chapter 3 69
- Power-Up Diagnostics 69
- System Power-Up Sequence 71
- Power-Up Displays 74
- P00>>> 80
- 3.3.4 SRM Console Event Log 87
- Power-Up Error Messages 90
- 3.4.3 No MEM Error 94
- 3.4.4 RMC Error Messages 96
- 3.4.5 SROM Error Messages 98
- Figure 3–2 Function Jumpers 100
- Updating the RMC 102
- Chapter 4 105
- SRM Console Diagnostics 105
- Diagnostic Command Summary 106
- (Continued) 107
- Example 4–1 buildfru 108
- Example 4–2 more el 112
- Example 4–3 clear_error 114
- UNIX and OpenVMS systems 115
- Example 4–5 exer 120
- Example 4–6 floppy_write 125
- Example 4–7 grep 126
- Example 4–8 hd 128
- Arguments 129
- Example 4–9 info 0 130
- Example 4–10 info 1 131
- Example 4–11 info 2 132
- Example 4–12 info 3 133
- Example 4–13 info 4 134
- Example 4–15 memexer 136
- Example 4–16 memtest 138
- Example 4–18 nettest 145
- Example 4–20 show error 150
- ➊➋➌ ➍ ➎ ➏ 153
- ➊➋➌➍➎➏ ➐ 156
- Example 4–23 sys_exer 158
- Example 4–24 test -lb 160
- Chapter 5 163
- Error Logs 163
- 5.1.2 Invoking the GUI 166
- 5.1.3 Problem Found Report 168
- Fault Detection and Reporting 174
- Machine Checks/Interrupts 176
- AlphaServer 182
- Error Logs 5-25 187
- Error Logs 5-29 191
- Error Logs 5-31 193
- Chapter 6 195
- System Configuration 195
- and Setup 195
- System Consoles 196
- Example 6–1 set ocp_text 201
- (Continued) 207
- =Express ESC=Exit 216
- Setting Automatic Booting 218
- 6.7.2 Setting Up Serial Mode 225
- Setting SRM Security 229
- Example 6–3 set secure 230
- Example 6–4 clear password 230
- Setting Windows NT Security 232
- Configuring Devices 234
- 6.10.2 Memory Configuration 236
- Unstacked DIMMs 237
- Stacked DIMMs 237
- 6.10.3 PCI Configuration 240
- 10-Slot System 241
- 6-Slot System 241
- 00111222 242
- Chapter 7 247
- Using the Remote 247
- Management Console 247
- RMC Overview 248
- DPR Error Repository 249
- Remote Serial Terminal 250
- 7.2.1 Bypass Modes 252
- ➊ and a terminal is 255
- Connecting to the RMC CLI 256
- RMC Command-Line Interface 259
- Example 7–1 set com1_mode 261
- Example 7–2 status 262
- Field Meaning 263
- Example 7–3 env 264
- 7.6.4 Dumping DPR Data 266
- Example 7–5 power on/off 268
- Example 7–6 halt in/out 269
- Example 7–7 reset 269
- Example 7–10 set escape 275
- Troubleshooting Tips 278
- Chapter 8 281
- FRU Removal 281
- and Replacement 281
- Table 8–1 FRU List 282
- 8.1.1 Power Cords 285
- 8.1.2 FRU Locations 286
- Pedestal 290
- ➋ at the top and the 291
- V @ >240VA 296
- Power Supply 300
- ➍ out of the system 301
- Figure 8–10 Replacing Fans 302
- ➎ and ➏) or the PCI card cage 303
- ➊,➋,➌, and ➍) 303
- Hard Disk Drives 304
- Memory DIMMs 308
- Verification — SRM Console 311
- ➋ into the connector 313
- OCP Assembly 314
- Floppy Drive 318
- I/O Connector Assembly 320
- PCI Backplane 322
- ➊, if present 327
- Power Harness 330
- Appendix A 333
- SRM Console Commands 333
- SRM Console Commands A-3 335
- Appendix B 337
- Jumpers and Switches 337
- Figure B–2 TIG/SROM Jumpers 340
- Jumpers on PCI Board 344
- Setting Jumpers 346
- Appendix C 347
- DPR Address Layout 347
- Appendix D 359
- Registers 359
- Ibox Status Register (I_STAT) 360
- (MM_STAT) 362
- ECC_ERR_LD 364
- ECC_ERR_ST 364
- TPERR_P1 364
- TPERR_P0 364
- Cbox Read Register 366
- PC[63:32] 368
- PC[31:2] 368
- Register (IER_CM) 370
- PAL Base Register (PAL_BASE) 374
- Registers D-17 375
- Name Extent Type Description 375
- Ibox Control Register (I_CTL) 376
- Registers D-19 377
- Continued on next page 377
- Registers D-21 379
- Registers D-23 381
- Registers D-25 383
- PK1417-99 384
- (Continued) 386
- Register (DIRn, n=0,1,2,3) 387
- Access RW 390
- RAZ Rev0 391
- Check Logout Frames 395
- DPR 680 Fatal Registers 399
- Check Logout Frame 400
- Logout Frame 402
- (680 Correctable) 403
- Registers D-47 405
- Registers D-49 407
- Registers D-51 409
- Registers D-53 411
- Registers D-55 413
- Registers D-57 415
- Appendix E 417
- Isolating Failing DIMMs 417
- DIMM Isolation Procedure 419
- EV6 Single-Bit Errors 432
- SCSI breakouts, 1-9 441
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