IBM 7133 Series, Service Manual

Page: 80 / 230

|
8
Check for continuity between the frame of the 7133 and the ground pins 1 and 7 of
| the mainline-power connector.
P in 1
Pin 7
Pin 12
P in 6
|
9
If any fan-and-power-supply assembly has no continuity, exchange that
| fan-and-power-supply assembly for a new one (see “Fan-and-Power-Supply
| Assemblies” on page 3-32), then do the complete grounding check again.
| If each fan-and-power-supply assembly has continuity, you might have a problem
| with the power cables or with the grounding of the using system.
|
10
Check the power cables for continuity. Check between ground sockets 1 and 7 of
| the plugs and the screw
6
.
P in 1
Pin 7
Pin 12
P in 6
1-66
7133 Service Guide