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297-6201-501 97Q3 Standard 02.01 July 1997
Power and Alarm Communications PCA
Replacement Procedure (NT6M84xx) 41
Power Supply Replacement Procedure
(NT6M71xx) 43
PCA Switch and Strap Settings 47
List of Figures
BMC II BISYNC Front View 1
DMS-10 Side View 2
DMS-100/DCO Side View 2
Version number missing 16
Version number recovered 17
Sequence numbers not incrementing 19
Sequence numbering corrected 20
List of Procedures
Miscellaneous PCA replacement 25
Remove faulty disk drive 29
Install replacement disk drive 30
Disk Crossover PCA replacement (NT6M72xx) 33
Error Control II PCA (NT6M65xx) replacement 37
Error Control II Jumper PCA (NTM609xx) replacement 39
Power and Alarm Communications PCA (NT6M84xx)
replacement 41
Power Supply (NT6M71xx) replacement 43
List of Tables
BMC II BISYNC software and firmware files 3
Disk drive size and related number of tracks 6
Valid status values for CMD and STA bytes 13
NT6M62xx CPU PCA 47
CPU LED display codes 47
NT6M63xx EPROM PCA (MEM1) 48
NT6M60BA Quad SIO (Slot 6), BMC set to INTERNAL timing
and Polling Modem set to EXTERNAL timing 49
NT6M60BA Quad SIO (Slot 6), BMC set to EXTERNAL timing
and Polling modem set to INTERNAL timing 49
Baud Rate Reference 50
NT6M84BA PWR/ALM Communications PCA, BMC set to
INTERNAL timing and Polling modem set to EXTERNAL
timing 51
NT6M84BA PWR/ALM Communications PCA, BMC set to
EXTERNAL timing and Polling modem set to INTERNAL
timing 51
NT6M66xx Disk Interface PCA 51
NT6M70xx DMS-100 DSI PCA 52
NT6M89xx DMS-10 TEC PCA 53
NT6M90xx 800 bpi DCO TEC PCA 54
NT6M90xx 1600 bpi DCO TEC PCA 55
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