IBM 3274 51C Maintenance Information page 12

Card
52C
Number
Card FUnction
51C Kanji
1
Control Storage 32 (Note 1)
Note 1
Note 1
2
Control Storage 64 (Note 1)
Note 1
Note 1
3
Control Storage 64·R (Note 1)
Note 1 Note 1
4 Storage Feed Thru (4W) or Storage Logic (4W) (Note 2) 01A·P2
01A·M2
5
Storage Feed Thru (2W) or Storage Jumper (Note 2)
01A·Q2
01A·N2
6
Storage Jumper (Note 2) 01A-Q4
01A-N4
7
Control Logic 1
01A-N2 01A-L2
8
Control Logic 2
01A-M2
01A-K2
9
Control Logic 3
01A-L2 01A-J2
10
Diskette Adapter
01A-K2
01A-F2
(Note 3)
11
Response Time Monitor w/wo Type-B Board
01 A-B4
-----
11
Response Time Monitor w/wo 24,48,96 1M Board
01A-C4
_
..
_----
12
Type A Terminal Adapter
01A-J2 01A-D2
13
CCA/HPCA
01A-H2 01A-H2
14
EIA/DDSA/1200 IM/Loop/X.21/V.35
(Note 4)
01A-G2 01A-G2
15
2400-, 4800·bps I M Receiver 01A-F2 .........
----_
...
16
9600-bps I M Receiver Ext
01A-D2
-.-
.........
_-
17
2400-, 4800·bps I M Processor
01A-D2
._-----
....
_--
17
9600-bps I M Processor
01A·E2
_
..
_--------
18 2400-, 4800-, 9600-bps TAC (Note 4)
01A·C2
---.-----.
19
2400-,4800-, 9600-bps PROM 01A-B4
-_
..
_-------
20
2400-,4800·, 9600-bps 1M Front End
01A-G2 ---------
21 Encrypt/Decrypt (See Note 5)
01A·A2
------
..
_
..
_--
22
File Control (located in the diskette drive)
01A·K 01A-K
23
Not Used
------------
---_
..
_
..
_----
24 Type B Terminal Adapter 1
01A·D2
-------._
..
_-
25
Type B Terminal Adapter 2
01A·C2 ----------.
26
Type B Terminal Adapter 3
01J1.F2
---_.-------
27
Type B Terminal Adapter 4
01A·E2 .-------- ..
28 Type A Driver/Receiver (Note 6)
OlS-A 1
01S-A 1
29
Not Used
------_
...
-_.
.....
_---
....
_--
30
Type B Driver/Receiver
01A·B2
--
..
-
....
-
..
_--
31
Not Used
..
----
..
-----.
..... - ..............
32
CCA/HPCA Interface Jumper
01A·Y6 01A-Y6
Notes:
1. For card locations, see the board storage layout (Figure 2-4).
2. With some part numbers it is possible to plug card in backwards. To ensure correct plugging
position, see Figure A·".
I
3. Jumper should not be plugged on this card. This jumper is for manufacturing test purposes only.
4. Jumper or switch setting required (see Appendix C).
5. Card removal destroys the master key (see paragraph 6.1.3),
6. Located behind the I/O coaxial panel.
Figure 1-7. Card Location Chart
Chapter 1. Introduction 1-7