IBM Application System/400 Service Information page 108

Twinaxial Workstation Controller Port Tester
User's Guide for more information.
This ends the procedure.
17
The cable network is bad. The wires in the
cable between the console and the
twinaxial workstation attachment are
reversed. Go to step 19 of this procedure.
1 8
The test indicated that there was no signal
on the cable to the console. Connect the
cable that was removed.
Remove the port tester and disconnect the
cable from the port connector on the
chassis. Connect the port tester to the port
connector on the chassis. Press and hold
the port tester test switch for 15 seconds
and observe the lights:
• If the green light is on, exchange the
cable.
• If all lights are off, exchange the
chassis.
Power on and perform an IPL of the
system.
This ends the procedure.
19
Cable maintenance is a customer responsi-
bility.
See the manuals listed below for more
information on correcting cable problems.
• If the IBM cable system is being used
to attach the workstation, see the fol-
lowing manuals:
- IBM Cabling System Planning and
Installation Guide, GA27-3361
- Using the IBM Cabling System with
Communication Products,
GA27-3620
- IBM Cabling System Problem
Determination Guide for Twinaxial
Applications, GA21-9491
• If the telephone twisted-pair cable is
being used to attach the console, see:
- IBM 5299 Model 3 Terminal Multi-
connector and IBM Twinaxial to
Twisted-pair Adapter Planning,
Installation, and Problem Analysis
Guide, GA27 -3749
3-18
AS/400 9401 Service Information
• If a twinaxial cable is being used to
attach the console, see:
- IBM 5250 Information Display
System Planning and Site Prepara-
tion Guide, GA21-9337
Twinaxial Cabling Troubleshooting
Guide, SY31-0703
• The cable must be repaired or
exchanged.
Then power on the system to perform an
IPL.
This ends the procedure.
20
Is the reference code 0001 or 0101?
No Yes
~ Perform the following:
a. Exchange the following parts:
1) Console (90%)
2) Cables (10%)
b. Power on the system to
perform an IPL.
This ends the procedure.
21
The port tester detects most problems, but
it does not always detect an intermittent
problem or some cable impedance prob-
lems. The tester may indicate a good con-
dition although there is a problem with the
workstation I/O processor card or cables.
• Exchange the following parts:
a. Console (90%)
b. Chassis (5%)
c. Cables (5%)
• If you have another working display,
you can exchange the console and
perform an I PL to attempt to correct the
problem.
• See the manuals for the failing display
for more information.
• If exchanging the failing items does not
repair the problem, and the reference
code was 5002, 5082, or 50FF, there
may be a Vertical Licensed Internal
Code problem. Go to "VLlC-PIP3" on
page 3-20.