IBM 2025 Maintenance Manual page 143

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I
I
I
I
\
\
....
,,
'
B 1 Board
B2 Board
Array Pins
"
(
'...
--------------
.....
,,
'---------------J
There is one SA
&
Z driver card for each bit.
Location of SA & Z driver and connector cords
is given on ALO 's MD512-MD782.
NOTE:
Resistance measured between two sense I ine pins is
about 5.5Q and between sense line pin and inhibit
pin about 2.8Q.
Measurements token using Simpson (260)
meter.
Sense/Inhibit
Triple Twist Lines
Figure 1-131. Main Storage Array Measurements
s
s
SA In 0-8KA
SA In 0-8KA
Inhibit 0-8KA
SA In 0-8KB
SA In 0-8KB
Inhibit 0-8KB
SA In 8-16KA
SA In 8-16KA
Inhibit 8-16KA
SA In 8-16KB
SA In 8-16KB
Inhibit 8-16KB
Measure Pins
on the SA&
Z
Driver Cords
(5804648)
Dll
012
B12
B09
BlO
B07
G04
GOS
J05
GOS
G09
JlO
2025 FEMM (7/69)
1-133

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