B1
Feature Board FRU Isolation Procedure 156
1.
Unplug all feature cards from the
B1
board except for the
lOP
feature
card
(B1-A)
and
the
main
storage
card
(B1-G).
IPL
the system with wraps (1-0000).
If
an
SRC
of
6300 through 6355 is displayed
on
the
system console, the following
FRUs
are suspect:
•
lOP
feature
card
B1-A
•
Main
storage
card
B 1-G
• Feature power supply
•
B1
feature
board
If
an
SRC in the range indicated above is
not
displayed
on
the system console, continue with step
2.
2.
Install the feature cards, one
at
a time.
IPL
the system with wraps (1-0000).
If
an
SRC
in
the range
of
6300 to 6355 is displayed
on
the system console, the feature
card
just
installed is defective.
3.
Repeat step 2 for each feature card until the failing card has been isolated.
160 Isolating Main Storage Problems
Note: Unless instructed
not
to, always power
off
the 5363 before removing, exchanging,
or
installing a
FRU.
If
an
SRC indicates a
Main
Storage error, perform the following procedure:
1.
Exchange the main storage card. (B1-G)
2.
Load
the system from Diskette
61:
a. Select function 3 (IPL Diagnostic Diskette).
b.
Enter FA03.
c.
Press the Start Function key.
3.
Wait until the
output
display light is
on
with FA03 displayed.
If
a failure occurs, continue with step
4.
If
no failure occurs, go to "105 System Entry Procedure"
on
page
1-2.
4.
Repeat steps 1 through 3 exchanging the following
FRUs
in this sequence:
a.
AIJ2
(MSP
Data
Flow)
b. A1H2
(MSP Control)
5.
If
a failure still occurs, either the
Al
or
B1
board is defective.
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