IBM 2025 Maintenance Manual page 237

Processing unit
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Connectors
Diode Card 2
Diode Card 1
Access Hole for
Black Wire to
Pin J06 on
SA Z-Driver
Yellow Wire (-30v)
to Pin J07 on SA Z-Driver
Red Wire to
,.._--c~"'"'·~
------.1
vv~--o--~
Pin G07 on
70ohms
70ohms
SA Z-Driver
From
To
Y Read
B2U4B12
Y Write
B2U4D06
X Read
B2U4G07
X Write
B2U4J06
Figure 6-7. Main Storage Components (Card Side)
From
Y Read
Y Write
X Read
X Write
Bit
SA Z-Oriver
B1G2
B1H2
B1J2
B1K2
B1L2
B1M2
B1N2
B1P2
B102
B1R2
B1S2
B1F4
B1G4
B1H4
B104
B1R4
B1S4
B1T4
Y Read
Y Write
X Read
X Write
53ohms
To
B2U4012
B2U4B08
B2U4G09
B2U4J09
2 0 2 5 FEMM ( 7
I
6 9 )
6 -7

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