Name: Nortel DMS-100 Series
Brand: Nortel
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14-6 SCSI Crossover circuit pack (NT6M93xx) - Turbo only

297-1001-539 Standard 01.03 September 2000

Figure 3-1

SCSI Crossover (A15 and B15) circuit pack (NT6M93AA; 380- and 760-Mbyte disk drives for

Turbo DPPs) options

Default Chapter7
- Table of Contents7
Replacing Circuit Packs17
- How to Use this Document17
- General Information about Circuit Pack Failures17
- General Troubleshooting Guidelines17
Central Processor Unit (CPU) Circuit Pack (NT6M62BA)21
- General Description21
- Central Processor Unit LED Display22
- Replacing CPU Circuit Pack22
List of Tables27
- ECAC Alarm Reporting Priority Sequence - LED Display Codes27
- CPU Display Control Functions28
- CPU with DMA Circuit Pack (A1 and B1) Options - Part Number: NT6M62BA28
EPROM Circuit Pack (Nt6M63Xx)31
- General Description31
- Replacing EPROM Integrated Circuits31
- EPROM IC Precautions32
- Replacing the EPROM Circuit Pack34
Memory Expansion Circuit Pack (NT6M64AA)43
- General Description43
- Replacing Memory Expansion Circuit Pack43
  - Memory Expansion Circuit Pack (A3 and B3) Options - Part Number: NT6M64AA48
Error Control II and Error Control II Jumper Circuit Packs (NT6M65AA and NTM609AB)50
- Replacing Error Control II Circuit Pack50
- Replacing Error Control II Jumper Circuit Pack52
  - Error Control II Circuit Pack (A5) Options - Part Number: NT6M65AA55
  - Error Control II Jumper Circuit Pack (B5) Options - Part Number: NTM609AB56
Quad SIO Circuit Pack (Nt6M60Xx)59
- General Description59
- Replacing QSIO Circuit Pack60
  - QSIO Circuit Pack (A6 and B6) Options - Part Number: NT6M60AA64
  - QSIO Circuit Pack (A6 and B6) Options - Part Number: NT6M60BA69
Interface Circuit Pack (Nt6M94Xx) - Turbo Only77
- General Description77
- Replacing the 56K Interface Circuit Pack78
  - 56K Interface Circuit Pack (A7 and B7) Options - Part Numbers: NT6M94AA and NT6M94BA83
High Performance Disk Interface Circuit Pack (Nt6M66Xx)85
- General Description85
- Replacing the H.P. Disk Interface Circuit Pack86
  - Disk Interface Circuit Pack (A11 and B11) Options - Part Number: NT6M66AC And/Or NT6M66AL; 72-Mbyte and 140-Mbyte Disk Drives89
  - Disk Interface Circuit Pack (A11 and B11) Options - Part Number: NT6M66AH; 380-Mbyte Disk Drives, DPP Systems W/O 56K Polling89
SCSI Circuit Pack (Nt6M66Xx) - Turbo Only91
- General Description91
- Replacing the SCSI Circuit Pack93
  - SCSI Circuit Pack (A11 and B11) Options - Part Number: NT6M66BA; 380-Mbyte Disk Drives with 56K Polling and 760-Mbyte Disk Drives and NT6M66BD; no97
  - SCSI Circuit Pack (A11 and B11) Options - Part Number: NT6M66CA; 1- and 2-Gbyte99
Data Stream Interface Circuit Pack (Nt6M70Xx)101
- General Description101
- Primary Function101
- Cable Adapter Assemblies101
  - DSI Circuit Packs (Slots 12 and 13) Options - Part Number: NT6M70AA and105
  - DSI Circuit Packs (Slots 12 and 13) Options - Part Number: NT6M70AC107
Bus Terminator Circuit Pack (NT6M68AA)111
- General Description111
- Replace Bus Terminator Circuit Pack111
  - Bus Terminator Circuit Pack (Slot 14) Options - Part Number: NT6M68AA120
Power and Alarm Communications Circuit Pack (Nt6M84Xx)121
- General Description121
- Replacing P/A COMM Circuit Pack122
  - P/A Comm Circuit Pack (A16) Options - Part Number: NT6M84AA126
Disk Crossover and Disk Controller Circuit Packs (Nt6M72Xx and 680-9143)135
- General Description135
- Replacing Disk Crossover Circuit Pack135
- Disk Controller Circuit Pack143
  - Disk Drives143
SCSI Crossover Circuit Pack (Nt6M93Xx) - Turbo Only147
- General Description147
- Replacing SCSI Crossover Circuit Pack148
  - Turbo Dpps152
  - SCSI Crossover (A15 and B15) Circuit Pack (NT6M93BA; 1- and 2-Gigabyte Disk Drives for Turbo Dpps) Options153
Crossover Circuit Pack (NT6M48AA) - Turbo Only155
- General Description155
- Replacing 56K Crossover Circuit Pack155
  - 56K Crossover (B16) Circuit Pack (NT6M48AA) Options159
Four-Channel Communication Circuit Pack (NT6M85AA)161
- General Description161
- Replacing the Four-Channel Comm Circuit Pack161
  - Four-Channel Communications (A17) Circuit Pack (NT6M85AA) Options164
Connector Circuit Pack (NT6M49AA) - Turbo Only167
- General Description167
- Replacing the 56K Connector Circuit Pack167
Power Supply (NT6M71AB)171
- Powering down DPP for Maintenance171
- DPP System Fuses172
  - DPP Power Supply Assembly172
- Replacing Power Supply for Maintenance173

Brand	Nortel
Model	DMS-100 Series
Category	Control Unit
Language	English

Nortel DMS-100 Series Manual

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