14
2.6.5 Modem Board Sub-Assembly (M66279A).
This board is installed as a backplane for the 2070 boards and is similar to 2070 controller slot A2. The
modem board receives the SP1 and SP2 communication channels, POWERUP and CPURESET signals
from the Host board (M69945A) through the 40 lines ribbon cable. The DC voltages +12VDC, -12VDC,
+5VDC and the LINESYNC and POWERDOWN signals are received from the Control Signals board
(M66450A). It also includes a DIN-96 receptacle connector (A5) for plugging the 2070 Type
communication boards.
To Next Page
Loading...
