IBM 3274 51C Maintenance Information page 11

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A Devices
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ZI
Z2
Z3 Z4 Z5
Z6
Notes:
,.
Not present when control is equal to 64K. 4. Top card connector position (X) is not required when storage
2. Cable is in Z5 or Z6 depending upon interface installed.
is 64K. Your machine may already have connector installed.
3. Type A Driver/Receiver Card No. 28 located behind the I/O coaxial panel.
Figure 1-5. 01A-A1 Roard - Model SIC without 2400-,4800-, and 9600-bps Integratcd Modem - PN 5643329 or 6226635
II
Not Used
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Z2
ZI Z2 ZI Z2
~
Model 51 C with 1M 2400
Model 51C with 1M 4800
Model 51C with 1M 9600
*If installed
Note: Sockets H- V are the same as the board layout in Figure
'-5.
Figure 1-6. 01A-A1 Board - Model51C with 2400-,4800-, and 9600-bps Intcgrated Modem - PN 563329'or 6226635
1-6