IBM System/34 Maintenance Manual page 478

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31-140 Digital Data Service Adapter
The Digital Data Service Adapter cards are located in
A-A2H2 (line 1) and in A-A2H4 (line 2). The
communications adapter cards are located in A-A2J2
(line 1) and in A-A2K2 (line 2). Figure 31-17 shows the
parts needed for the Digital Data Service Adapter.
Line 1
Internal Cable
2
L
I
N
E
Adapter Cards
A-A2 Board
Line 2
I nternal. Cable
Cable Tower
r----.
I I
Cable Tower
r- - ----,
I I
Figure 31-17. Data Communications with the Digital Data Service Adapter
31-140
To
Channel
Service
Unit
2 3 4 5 6 7 8
00 • • • • 00
0 0 0 0 0 0 0
9 10 11 12 13 14 15
15 are not used
3 Received Data (DT1)
4 Received Data (DR1)
5 Transmitted Data (DT)
6 Transmitted Data (DR)
Data Communications 19
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