IBM 3274 51C Maintenance Information page 241

31 SO Control Card
~e
PTXCP
BA
00
1
o
00
00
00
00
00
00
00
00
1/0 CP
00
00
00
00
00
00
00
oolB
rolB
~A
2 1
LEDCP
o TP24V
o TPBOl
D
TPA010
TPC040
0
0
0
TPC01
oTPD01
TPE03 0
0
TPE01
TPF02 0 TPF01
o TPLED
SCP
TPG02
0
TPH050
oTPHLD
4 . 1
~
CD
Multimeter
G
Positive
Probe
J
Figure E-39. PTX Amplifier Service Check
E-S2
Negative
0
Probe
15 Vdc Scale