Nortel DMS-100 Series Manual page 11

Disk II crossover circuit pack (A15 and B15) options - part number:
NT6M72AC, NT6M72AD, and NT6M72AE; 72-, 140-, and 380-Mbyte
disk drives for Non-Turbo DPPs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-7
Disk Controller circuit pack (A21A1 and B21A1) options - part number:
680-9143 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-10
SCSI crossover circuit pack (A15 and B15) options - part number: NT6M93AA,
(380- and 760-Mbyte disk drives with 56K polling); NT6M93BA, (1- and
2-Gigabyte disk drives) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-8
56K crossover circuit pack (B16) options - part number: NT6M48AA . . . . . . . . 15-6
Four-Channel Communications circuit pack (A17) options - part number:
NT6M85AA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-5
56K Connector circuit pack (B26) options - part number: NT6M49AA . . . . . . . . 17-3
Fuse replacement information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-3
Allowed disk drive unit mode changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-2
Option settings to configure disk drives (A or B) . . . . . . . . . . . . . . . . . . . . . . . . 19-6
DPP power and alarm bulkhead connector wiring . . . . . . . . . . . . . . . . . . . . . . 21-7
List of procedures
DPP troubleshooting procedure - no specific fault indicator available . . . . . . . . . 1-2
DPP circuit packs replacement - changing processor modes . . . . . . . . . . . . . . . 1-4
Replacing CPU circuit pack (NT6M62BA) - slot 1 . . . . . . . . . . . . . . . . . . . . . . . . 2-2
EPROM IC installation procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Replacing EPROM circuit pack (NT6M63BF, NT6M63CF, NT6M63CH,
NT6M63CJ, NT6M63CL, or NT6M63FE) - slot 2 . . . . . . . . . . . . . . . . . . . . . . . 3-4
Replacing Memory Expansion circuit pack (NT6M64AA) - slot 3 . . . . . . . . . . . . . 4-2
Replacing Error Control II (A5) circuit pack - part number NT6M65AA . . . . . . . . 5-2
Replacing Error Control II Jumper (B5) circuit pack - part number
NTM609AB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Replacing QSIO circuit pack (NT6M60AA or NT6M60BA) - slot 6 . . . . . . . . . . . . 6-2
Replacing the 56K Interface circuit pack - slot 7: part numbers NT6M94AA
and NT6M94BA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
Replacing H.P. Disk Interface circuit pack (NT6M66AC, NT6M66AH or
NT6M66AL) - slot 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
Replacing SCSI circuit pack (NT6M66BA, NT6M66BD or NT6M66CA) -
slot 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
Replacing DSI circuit pack (NT6M70AA, NT6M70CF or NT6M70AC) - slots 12
and 13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2
Replacing Bus Terminator circuit pack (NT6M68AA) - version numbers G12
or earlier (e.g., D09 or E12) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2
Replacing Bus Terminator circuit pack (NT6M68AA) - version numbers H01
or later . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-6
Replacing the P/A Comm circuit pack (NT6M84AA or NT6M84BA) . . . . . . . . . 12-2
Replacing the Disk XOVR circuit pack (NT6M72AC, NT6M72AD or
NT6M72AE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-2
Replacing the SCSI XOVR circuit pack (NT6M93AA or NT6M93BA) . . . . . . . . 14-2
Replacing the 56K XOVR circuit pack (NT6M48AA) . . . . . . . . . . . . . . . . . . . . . 15-2
Replacing the Four-Channel Comm circuit pack (NT6M85AA) . . . . . . . . . . . . . 16-2
Replacing the 56K Connector circuit pack (NT6M49AA) . . . . . . . . . . . . . . . . . . 17-2
Power supply (NT6M71AB) replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-4
DPP Hardware Component Replacement Guide DPP001 and up
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