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Digital Equipment MicroVAX 3100 85 Troubleshooting And Diagnostics Information

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MicroVAX 3100
Model 85/95/96
Troubleshooting and Diagnostic
Information
Order Number: EK–A0719–TM. C01
DATE 1995
This manual describes the troubleshooting procedures and diagnostic
commands that you can use to solve basic problems with the
MicroVAX 3100 Model 85, Model 95, and Model 96 systems.
Revision Information:
Digital Equipment Corporation
Maynard, Massachusetts
This manual supersedes
EK–A0719–TM. B01

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  • Page 1 This manual describes the troubleshooting procedures and diagnostic commands that you can use to solve basic problems with the MicroVAX 3100 Model 85, Model 95, and Model 96 systems. This manual supersedes Revision Information: EK–A0719–TM. B01 Digital Equipment Corporation Maynard, Massachusetts...
  • Page 2 DATE 1995 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

    Contents Preface ..........1 Troubleshooting and Diagnosing Problems Troubleshooting .
  • Page 4 Figures 1–1 Diagnostic Tests ......1–13 1–2 Status LED Display ......1–26 Tables Basic Troubleshooting .

  • Page 5: Preface

    Preface This manual describes the troubleshooting procedures and diagnostic commands that you can use to solve basic problems with the MicroVAX™ 3100 Model 85, Model 95, and Model 96 systems. Audience This manual is intended for people who have some experience with computers. Structure of This Manual This manual presents the information you need for solving basic problems with the MicroVAX 3100 Model 85/95/96 system in one chapter.
  • Page 6 Conventions The following conventions are used in this manual: Convention Description MONOSPACE type Text displayed on the screen is shown in monospace type. italic type Italic type emphasizes important information and indicates the complete titles of manuals. Note A note contains information that is of special importance to the user.

  • Page 7: Troubleshooting And Diagnosing Problems

    Troubleshooting and Diagnosing Problems This chapter describes the troubleshooting procedures and diagnostic commands that you can use to solve basic problems with the MicroVAX 3100 Model 85, Model 95, and Model 96 systems. It contains information on the following: • Troubleshooting •...

  • Page 8: Using The Troubleshooting Table

    • System unit power cord • Expansion box SCSI cables • Expansion box power cords • ThinWire™ Ethernet cable or standard Ethernet cable 6. Check that the following terminators, if installed, are correctly connected and are not damaged: • SCSI terminators •...

  • Page 9: Basic Troubleshooting

    Table 1–1 Basic Troubleshooting Symptom Possible Cause Suggested Solution System Problems The system unit fan is The power cord is not Make sure that all the power cords off or the power light is connected. The power are connected correctly at both off.
  • Page 10 Table 1–1 (Cont.) Basic Troubleshooting Symptom Possible Cause Suggested Solution System Problems The port to which the Try connecting the terminal to terminal connects may another system. If this solution be faulty. works, the port to which the terminal was connected is faulty. If the terminal still does not operate, it is faulty.
  • Page 11 Table 1–1 (Cont.) Basic Troubleshooting Symptom Possible Cause Suggested Solution RRD43 Compact Disc Drive Problems The drive does not The disc is upside-down Remove the disc from the tray and accept the disc. in the tray or it is not reinsert it properly.
  • Page 12 Table 1–1 (Cont.) Basic Troubleshooting Symptom Possible Cause Suggested Solution TZ30 Tape Drive Problems The TZ30 green LED The drive mechanism Press and release the unload flashes rapidly. is faulty or the tape button to clear the fault. If the cartridge is damaged.
  • Page 13 Table 1–1 (Cont.) Basic Troubleshooting Symptom Possible Cause Suggested Solution TLZ06 and TLZ07 Cassette Tape Drive Problems The system cannot write The write-protect switch If the write-protect LED is on, to the cassette tape. is in the write-protect remove the tape, reset the switch position.
  • Page 14 Table 1–1 (Cont.) Basic Troubleshooting Symptom Possible Cause Suggested Solution RX™26 Diskette Drive Problems The system cannot read The diskette is not Format the diskette. from or write to the formatted. diskette. The diskette is not Eject the diskette. Try to insert the correctly inserted.

  • Page 15: Diagnostic Tests And Commands

    1.3 Diagnostic Tests and Commands There are a number of diagnostic tests and commands that can help you to isolate a problem with the system unit. These tests and commands are as follows: • Power-up tests • Diagnostic tests and utilities •...

  • Page 16: Power-Up Tests

    1.3.1 Power-Up Tests The system runs the power-up tests each time you turn on the system. After successful completion of tests, the system will either enter console mode or proceed to automatic bootstrap, depending on the HALT action selected by the user.
  • Page 17 The following example shows a typical display for a system that passes all tests and then enters automatic bootstrap. KA55-A or KA51-A or KA56-A V2.6, VMB 2.15 Performing normal system tests. 74..73..72..71..70..69..68..67..66..65..64..63..62..61..60..59.. 58..57..56..55..54..53..52..51..50..49..48..47..46..45..44..43.. 42..41..40..39..38..37..36..35..34..33..32..31..30..29..28..27.. 26..25..24..23..22..21..20..19..18..17..16..15..14..13..12..11.. 10..09..08..07..06..05..04..03.. Tests completed. Loading system software. (BOOT/R5:0 EZA0) -EZA0 1..0..
  • Page 18 The following example shows a system with a memory error that only affected one set of memory out of two sets. Because some memory is still usable, the system proceeds to automatic bootstrap if the HALT action is set to a boot condition. KA55-A or KA51-A or KA56-A V2.6, VMB 2.15 Performing normal system tests.

  • Page 19: Diagnostic Tests And Utilities

    1.3.2 Diagnostic Tests and Utilities The diagnostic tests and utilities are similar to the power-up tests except that the power-up tests enable you to test all the devices in the system, whereas the diagnostic tests and utilities enable you to test single devices and the functions of single devices.
  • Page 20 Figure 1–1 (Cont.) Diagnostic Tests 5C 20062D10 SHAC SHAC_number ********* 5F 200619B8 SGEC loopback_type no_ram_tests ****** 62 20058B1C console_QDSS mark_not_present selftest_r0 selftest_r1 ***** 63 20058CA4 QDSS_any input_csr selftest_r0 selftest_r1 ****** 80 2005D3C0 CQBIC_memory bypass_test_mask ********* 81 200596CC Qbus_MSCP IP_csr ****** 82 200598AC Qbus_DELQA device_num_addr **** 83 2005A85C QZA_Intlpbck1...

  • Page 21: Option Card Tests

    Figure 1–1 (Cont.) Diagnostic Tests A0 User defined scripts A1 Powerup tests, Functional Verify, continue on error, numeric countdown A3 Functional Verify, stop on error, test # announcements A4 Loop on A3 Functional Verify A6 Memory tests, mark only multiple bit errors A7 Memory tests A8 Memory acceptance tests, mark single and multi-bit errors, call A7 A9 Memory tests, stop on error...

  • Page 22: Microvax 4000-100A/105A Tests

    Note The following available tests (Table 1–3) are not used on the MicroVAX 3100 Model 85/95/96; they are used only on the MicroVAX 4000 Model 100A/105A, and are listed here to avoid confusion when you see them in the diagnostic test listing (Figure 1–1 ). Table 1–3 MicroVAX 4000-100A/105A Tests Test Name...
  • Page 23 You can use test 9E with the test number as a parameter to show a list of legal parameters and valid values for the test number. For example, enter T 9E 30 to show a list of legal parameters and valid values for test number 30 (Memory_Init_Bitmap).

  • Page 24: Power-Up Error Messages

    1.3.3 Power-Up Error Messages The following are examples of some error messages at power-up. Example 1–1 is a typical example of a failed test. In this case, test E8 failed testing a SYNC (COMM) option. Example 1–1 SYNC Test Failure KA55-A or KA51-A or KA56-A V2.6, VMB 2.15 Performing normal system tests.
  • Page 25 Example 1–2 represents a case where an additional set of memory SIMMs was added and one of the four SIMMs for the set was not the same type of SIMM as the others. In this example SIMM 1H was either not installed or incorrectly installed.
  • Page 26 Example 1–3 represents a case where one SIMM of a set was bad. In this example, SIMM 1G was bad or incorrectly installed. Example 1–3 Memory_Count_Pages Test Failure KA55-A or KA51-A or KA56-A V2.6, VMB 2.15 Performing normal system tests. 74..73..72..71..70..69..68..67..66..65..64..63..62..61..60..59..
  • Page 27 Example 1–4 represents a case where one SIMM of a set is missing or incorrectly installed. In this case, only one set of SIMMs was installed. Since one was missing, there is no usable memory for testing to run to completion. SIMM 1D is missing here.

  • Page 28: Configuration Display

    1.3.4 Configuration Display The configuration display shows the system configuration and the error messages that were detected while the most recent power-up tests, diagnostic tests, and utilities were running. If you add expansion boxes to the system and do not run the power-up tests or appropriate diagnostic test or utility, the configuration display does not recognize the reconfiguration.
  • Page 29 Note The lines for F0, E8 and EC display only if the applicable option is present. If the system detects errors in the most recent power-up tests and diagnostic utilities, it responds with a configuration display similar to the following: KA55-A or KA51-A or KA56-A V2.6, VMB 2.15 08-00-2B-2B-16-91 80MB...

  • Page 30: Error Display

    1.3.5 Error Display You can use the error display to display certain errors detected during the last power-up test or diagnostic utility. To see the error display, enter the following command: >>> SHOW ERROR The system responds with a display similar to the following: ?? 001 CPU_BD 0000 B_Cache Test_35 Subtest_33 Loop_sub_27 Error_type_FF...

  • Page 31: Contacting Digital Services

    1.4 Contacting Digital Services Warning Only authorized service personnel should service the MicroVAX 3100 Model 85/95/96. If you have followed the procedures in this chapter but the problem remains unsolved, your Digital services representative can help you. Before you place your call, follow these steps: 1.

  • Page 32: Status Led Display

    Figure 1–2 Status LED Display O P A O MLO-012035 Status LED Display 1–26 Troubleshooting and Diagnosing Problems...
  • Page 33 Index Cables Device mnemonics, 1–22 checking connections, 1–13 Device status, 1–22 checking the console terminal cable, Diagnostic commands, 1–9 to 1–24 1–1 Diagnostic tests, 1–9 to 1–24 checking the Ethernet cables, 1–2 Diagnostic tests and utilities, 1–13 checking the expansion box power listing, 1–13 cords, 1–2 not applicable, 1–15...
  • Page 34 Privileged console mode, 1–9 troubleshooting, 1–3 RRD43 compact disc drive, 1–5 Field Services eject button fault, 1–5 See Digital services troubleshooting, 1–4 RRD43 compact disc drive troubleshooting, 1–4 Loopbacks RX26 checking, 1–1 disk format error, 1–8 checking connections, 1–2 diskette drive, 1–7 standard Ethernet, 1–1 diskette insertion error, 1–8 eject error, 1–8...
  • Page 35 TZK11 QIC tape drive, 1–7 troubleshooting, 1–7 Terminal troubleshooting, 1–3 Terminators checking, 1–1 Utilities checking connections, 1–2, 1–13 diagnostic, 1–22 SCSI, 1–2 ThinWire Ethernet, 1–1 Test utility numbers, 1–22 Tests Write-protect switch diagnostic, 1–22 RX26, 1–8 ThinWire Ethernet, 1–2 TZ30, 1–6 TLZ06 TZK10, 1–7 troubleshooting, 1–6...
  • Page 37 Fax: (809) 749-8377 3 Digital Plaza, 1st Street Suite 200 Metro Office Park San Juan, Puerto Rico 00920 Canada Phone: 800-267-6215 Digital Equipment of Canada Ltd. Fax: (613) 592-1946 100 Herzberg Road Kanata, Ontario, Canada K2K 2A6 Attn: DECdirect Sales International —————...
  • Page 39 Reader’s Comments MicroVAX 3100 Model 85/95/96 Troubleshooting and Diagnostic Information EK–A0719–TM. C01 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) Completeness (enough information) Clarity (easy to understand) Organization (structure of subject matter)
  • Page 40 If Mailed in the United States BUSINESS REPLY MAIL FIRST CLASS PERMIT NO. 33 MAYNARD MASS. POSTAGE WILL BE PAID BY ADDRESSEE DIGITAL EQUIPMENT CORPORATION Shared Engineering Services MLO5–5/E76 2 THOMPSON STREET MAYNARD, MA 01754-1716 Do Not Tear – Fold Here...

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