IBM 3270 Maintenance Manual page 326

Check the rest of the power supply voltages to
the expansion board.
1. Set your multimeter to the 12-V de scale.
2. Check the expansion board power connector
for the voltages listed in the table.
Yah ....
COIIHCtOrs
.illVIIe ••• Vdc -Lud +Lud
4.5 5.4 9 6
11.5 12.6
7
3
10.8 12.9 4 8
Connectors
Power Supply
ARE THE VOLTAGES WITHIN THE
SPECIFIED VALUES?
NO
Replace the expansion unit power supply
(see Section 5, "Removal/Replacement and
Adjustments").
YES
October 1984 3-1800-11