IBM pSeries 670 Service Manual page 136

Symptom
Hardware Management Console (HMC) cannot be used
to manage a managed system, or the connection to the
managed system is failing.
Hardware management console (HMC) cannot call out
using the attached modem and the customer's telephone
line.
116 Eserver pSeries 670 Service Guide
There is a Display Problem (Distortion, Blurring, Etc.)
Action
If the managed system is operating normally (no error
codes or other symptoms), the HMC might have a
problem, or the connection to the managed system might
be damaged or incorrectly cabled. Do the following:
1. Check the connections (serial cable) between the
HMC and the managed system. Correct any cabling
errors if found. If another serial cable is available,
connect it in place of the existing cable and refresh
the HMC graphical user interface. You may have to
wait up to 30 seconds for the managed system to
reconnect.
2. Verify that any connected HMC is connected to the
managed system by checking the Management
Environment of the HMC.
Note: The managed system must have power
connected and the system running, or waiting for a
power-on instruction (the OK prompt is in the operator
panel.)
If the managed system does not appear in the
Navigation area of the HMC Management
Environment, then the HMC or the connection to the
managed system might be failing.
3. Go to the Entry MAP in the IBM Hardware
Management Console for pSeries Maintenance
Guide, order number SA38-0603.
4. If you cannot fix the problem using the HMC tests in
the IBM Hardware Management Console for pSeries
Maintenance Guide, there might be a problem with
the primary I/O book; replace the primary I/O book.
If the managed system is operating normally (no error
codes or other symptoms), the HMC might have a
problem, or the connection to the modem and telephone
line may have a problem. Do the following:
1. Check the connections between the HMC and the
modem and telephone line. Correct any cabling errors
if found.
2. Go to the Entry MAP in the IBM Hardware
Management Console for pSeries Maintenance
Guide, order number SA38-0603.