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Hardware Implementation
Quantum DLT 4000 Tape Drive 2-27
Table 2–11 Troubleshooting Chart (Continued)
If… Then… You Should…
System does not
recognize the tape
drive (cont.)
A device may not have been
turned on and a valid SCSI ID
may not have been
configured prior to the system
powering on and loading
BIOS.
Turn drives power on first, and then turn
on power to the system. Do this so that
the drive is properly recognized by the
system.
The tape drive does
not power up.
No power is reaching the tape
drive.
Check the tape drive’s power cable
connection at the rear of the drive.
All LED’s on the right
or on the left side of
the tape drive front
panel are blinking.
A drive fault has occurred. If a tape was loaded, try to unload the
tape and reinitialize the drive by pressing
the Unload button, or by turning power
to the drive off then back on. The LED’s
stop blinking as the drive attempts to
reinitialize. The LED’s light steadily again,
then extinguish if the test succeeds. Be
sure to isolate the tape that was loaded
in the drive and perform the Tape
Cartridge Inspection Procedure described
in appendix D.2.
When loading a tape
cartridge, the LED’s on
the right side of the
tape drive front panel
are blinking.
The tape drive has detected a
possible drive leader problem.
Isolate the tape cartridge from all other
tape devices; not doing so may damage
another tape device. Perform the Tape
Cartridge Inspection Procedure described
in appendix D.2 on the tape cartridge.
Contact your service representative.
Nonfatal or fatal errors
occur for which the
cause cannot be
determined.
SCSI bus termination or the
SCSI bus cable connections
may be incorrect.
The ac power source
grounding may be incorrect
(tabletop version).
Ensure the SCSI bus is terminated and
that all connections are secure.
Use
an ac outlet for the tabletop tape unit on
the same ac line used by the host system.
- DLT™4000 Tape Drive 1
- Product Manual 1
- TABLE OF CONTENTS 7
- REVISION HISTORY 19
- Revision History 20
- Quantum DLT 4000 Tape Drive 20
- ABOUT THIS MANUAL 21
- CONVENTIONS 23
- READER COMMENTS 23
- About This Manual 24
- Chapter 1 25
- Tabletop Version 1 26
- Tabletop Version 2 26
- 1.2 PRODUCT FEATURES 27
- 1.3 PRODUCT SPECIFICATIONS 27
- 1.3.2 Interface Type 28
- 1.3.3 Storage Capacity 28
- 1.3.4 Performance Data 28
- 1.3.6 Power Requirements 31
- 1.3.9 Reliability (Projected) 32
- Chapter 2 35
- HARDWARE IMPLEMENTATION 35
- 2.1.1 Safety Precautions 36
- 2.1.2 Handling 36
- 2.2 DRIVE SETUP 37
- Hardware Implementation 39
- SCSI ID Pushbutton 41
- 2.3 DRIVE INSTALLATION 42
- 2.4 DRIVE CONNECTIONS 44
- Pin Number Signal Name 48
- 1 +12 VDC 48
- 2 Ground (+12 V return) 48
- 3 Ground (+5 V return) 48
- 4 +5 VDC 48
- Table 2–5 LED Functionality 52
- 2.5.2 Selecting Density 56
- 2.6 POWER ON SELF TEST (POST) 58
- 2.7 TROUBLESHOOTING 60
- Chapter 3 63
- SCSI DESCRIPTION 63
- SCSI Description 64
- 3.3 SIGNAL STATES 66
- Table 3–2 Signal Sources 67
- 3.4 SCSI SIGNALS 68
- 3.4.2 Signal Bus Timing 69
- 3.5 SCSI BUS PHASES 72
- • DISCONNECT 73
- • COMMAND COMPLETE 73
- 3.5.3 SELECTION Phase 75
- The initiator: 76
- The drive: 76
- 3.5.4 RESELECTION Phase 77
- Table 3–6 Status Bytes 85
- 3.6 SCSI BUS CONDITIONS 86
- 3.6.2 Reset Condition 87
- 3.6.3 Queued Unit Attentions 88
- Chapter 4 89
- MESSAGES 89
- 4.2 SUPPORTED SCSI MESSAGES 93
- Messages 100
- Chapter 5 101
- SCSI COMMANDS 101
- SCSI Commands 102
- 5.1.1 SCSI Pointers 103
- 5.1.3 Status/Error Reporting 107
- 5.2 SCSI COMMAND DESCRIPTIONS 113
- 5.3 ERASE COMMAND (19H) 115
- 5.4 INQUIRY COMMAND (12H) 117
- 5.6 LOCATE COMMAND (2BH) 130
- 5.7 LOG SELECT COMMAND (4CH) 132
- 5.7.2 Operation of LOG SELECT 134
- 5.8 LOG SENSE COMMAND (4DH) 139
- • A page is not supported 142
- • The SP bit is set to 1 142
- • PPC bit is set to 1 142
- (continued) 146
- 0000h – 000Fh) 156
- 0000h, 0001h, or 0002h) 159
- 5.9.1 Mode Parameter List 163
- 5.10.3 MODE SENSE Mode Pages 199
- Data Format 215
- 5.12 READ COMMAND (08H) 217
- 5.14.2 Data Mode 224
- 5.14.3 Descriptor Mode 224
- • A hard reset occurs 245
- 5.23 SPACE COMMAND (11H) 252
- 5.25 VERIFY COMMAND (13H) 255
- 5.26 WRITE COMMAND (0AH) 257
- 5.27.2 Write Data Mode (010b) 260
- Appendix A 265
- INFORMATION 265
- Appendix B 269
- B.2.1 POST Failure Packets 270
- B.2.2 Event Log Packets 271
- Appendix C 275
- UPDATING THE FIRMWARE 275
- • Examines the data 277
- Appendix D 281
- THE TAPE CARTRIDGE 281
- Reel Lock Opening 284
- Spring-Loaded Hub 285
- WRITE-PROTECTION 288
- D.4 LOADING A TAPE CARTRIDGE 290
- *81-60043-04 A01* 300
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