Advertisement
1. The following modification must be made to the CPA REV-4 or e a rlie r REV'S
i f i t is to be used with the RAM-16, RAM-32 or RAM -65 memory boards.
This change makes the signal on backplane line 71 (RUN) agree with the bus
d efin itio n .
The change does not affect the CPA's compatability with other
IM SAI products.
2.
Refer to Fig 1 and make the following cut on the component side of the
board:
(a)
Cut the trace extending down from U24 pin 9.
3.
Refer to Fig 2 and make the following cuts on the solder side of the
board.
(a)
Cut the trace from U24 pin 10 between this pin and feed through A.
(b)
Cut the trace from feed through B near the spare IC location.
(c)
Remove the en tire pad of the feed through connected to edge
connector pin 71.
4.
Refer to Fig 2 and in sta ll the following jumpers on the solder side of
the board.
(a)
From U22 pin 5 to U24 pin 10.
(b)
From edge connector pin 71 to U24 pin 9
(c)
From feed through A to feed through B.
Correct the schematic as shown in
5.
ER R A TA FO R CPA
REV-4
A N D EARLIER
Fig 2.
Advertisement
