Northern Telecom BCS35 Replacement Manual page 7

Figure 6–2 QSIO (A6 and B6) circuit pack (NT6M60AA) baud rate selector switches
6–10
Figure 6–3 QSIO (A6 and B6) circuit pack (NT6M60AA) peripheral switches and
indicators 6–11
Figure 7–1 Quad SIO (A6 and B6) circuit pack (NT6M60BA) options 7–6
Figure 7–2 Quad SIO (A6 and B6) circuit pack (NT6M60BA) baud rate selector
switches7–7
Figure 7–3 Quad SIO (A6 and B6) circuit pack (NT6M60BA) peripheral switches
and indicators 7–8
Figure 8–1 Disk interface (A11 and B11) circuit pack (NT6M66AH; 380–Mbyte disk
drives) options 8–7
Figure 8–2 Disk interface (A11 and B11) circuit pack (NT6M66AC; 72–Mbyte and
140–Mbyte disk drives) options 8–8
Figure 9–1 SCSI interface circuit pack (A11 and B11) NT6M66BA; 380–Mbyte Disk
Drives with 56K polling and 760–Mbyte Disk Drives, and
NT6M66BD; 1700–Mbyte disk drives, options 9–5
Figure 10–1 Data stream interface (A12, B12, A13, and B13) circuit packs
(NT6M70AC) options 10–7
Figure 10–2 Data stream interface (A12, B12, A13, and B13) circuit packs
(NT6M70AA and NT6M70CF) options 10–11
Figure 11–1 Bus terminator (A14 and B14) circuit pack (NT6M68AA) options 11–7
Figure 12–1 Power and alarm communications (A16) circuit pack (NT6M84AA;
release 01–06) options 12–7
Figure 12–2 Power and alarm communications (A16) circuit pack (NT6M84AA;
release 07 and NT6M84BA) options 12–10
Figure 13–1 Disk II crossover (A15 and B15) circuit pack (NT6M72AC, NT6M72AD,
and NT6M72AE; 72– thru 380–Mbyte disk drives, BCS25–28
DPP systems) options 13–6
Figure 13–2 Disk controller (A21A1 and B21A1) circuit pack (680–9143) options
13–9
Figure 14–1 SCSI crossover (A15 and B15) circuit pack (NT6M93AA; 380–Mbyte
disk drives with 56K polling; 760–/1700–Mbyte disk drives;
options 14–6
Figure 14–2 Opening hinged panel at the rear of the DPP chassis 14–7
Figure 15–1 Opening hinged panel at the rear of the DPP chassis 15–5
Figure 15–2 56K Crossover (B16) circuit pack (NT6M48AA) Options 15–7
Figure 16–1 Four–channel communications (A17) circuit pack (NT6M85AA) options
16–5
Figure 16–2 56K connector panel assembly (B26) panel (NT6M65AA) options
16–7
Figure 17–1 DPP power supply assembly 17–2
List of Tables
Table 3–1 ECAC alarm reporting priority sequence – LED display codes 2–6
Table 3–2 CPU display control functions 2–7
Table 3–3 CPU with DMA circuit pack (A1 and B1) options – part number:
NT6M62BA 2–7
Table 3–1 EPROM circuit pack (A2 and B2) options part number: NT6M63BF;
BCS21–24 DPP systems 3–6
Table 3–2 EPROM circuit pack (A2 and B2) options – part number: NT6M63CF,
BCS21–24 DPP systems; NT6M63CH, DPP systems w/o 56K polling 3–7
DPP Card Replacement Guide BCS35 and up
Contents v