IBM 5500 Operational, Installation, And Maintenance Manual page 133

cabling system wall connector.
b. Check for the resistances shown in Figure 70.
Figure 70: Last Workstation Failing
Connect Meter Leads As Shown Below
Positive
Red
Green
Red
Green
Shield
Shield
a. If surge suppressors are installed on the line, the normal resistance is 36
to 54 W.
Test for Cable Drop between Distribution Panels
Use the following procedure to test the cable drop between the distribution
panels:
1. Disconnect the Y (or jumper cable) that is connected to the cable drop
between panels at the distribution panel that is nearest to the control unit.
2. Go to the distribution panel at the other end of the cable drop and
disconnect any Y (or jumper cable) connected at that end.
3. Install a test connector on the cable drop between panels at the
distribution panel most distant from the control unit.
4. Check for the resistances shown in Figure 71 on page 134
Note: For a continuity test only, use only the first two connections shown in
Figure 71 on page 134.
Negative
Orange
Black
Green
Red
Red
Green
Normal Resistance
a
W
0 to 14
W
0 to 14
W
> 5000
W
> 5000
W
> 5000
W
> 5000
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