IBM 3745 Problem Determination Manual page 238

o
o
o
o
o
IPL Problems (Channel-Attached)
Looking at the control panel:
If
V
Hex code is either FF4 or 000
fit -;
f!J
...J
JI=
II~
Do
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~m~~~~~~~~~~~~~~~~~~~~~i~~~~~~~~~~~~~~~~~m~ ::::m::~~~~~~~~~~~:~~~~~~~~~~~~~:~~~~~~~~~~~~~~~~~~~~~:~:~:~~~
~~~~~~~m~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}~~~~
1. Log on at the local console.
2. Look at the machine status area for:
ENABLED CA ----xxxx-------- L xxxxxxxx
x may be Y ,U, N, or --.
The position of each of these characters gives the channel adapter (CA) -number.
(Refer to "MSA Fields Definition (IPL Information)" on page 8-15.)
If the CA you used is flagged with:
U Unusable
N
Y
• Either use another CA flagged with Y, or attempt re-I PL.
t
If the problem persists:
CO
and report the type of the failing channel adapter (type 6
=
CADS and 7
=
BCCA).
The CA is not -present.
Use another CA flagged with Y. Check if the configuration data file (CDF) has been
upgraded.
Not enabled (Disabled)
Check the CA status. Use the Channel Interface Display function described in the 3745
Advanced Operations Guide.
• If disabled, enable it.
• If enable, check the physical path (channel switching, unit initialization, channel cables).
• If the problem persists:
CO
and report the type of the failing channel adapter (type 6
=
CADS and 7
=
BCCA).
Enabled
Check that the 3745 channel address as defined in the host operating system corresponds to
the NSC address defined in NCP, and also to the address defined in the 3745 CDF function.
The CDF function may be used to verify that the CDF was correctly defined at installation
time. If CDF changes have been done, make sure that a power OFF/power ON of the 3745
has been performed afterwards.
If the problem persists:
CO
and report the type of the failing channel adapter (type 6 =
CADS and 7 = BCCA).
Chapter 8. IPL Problems (From Host or Disk)
8-3