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3745 FRU Exchange Procedure
015 (continued)
Is there a common FRU given by both lists?
Yes No
016
– If you do not have the first FRU called by
the diagnostics, obtain it.
If you have the FRU or when you obtain the
FRU, go to “3745 FRU List” on page 1-53
and follow the instructions to exchange it.
017
Consider that it is the first FRU of the list and
perform FRU exchange using Chapter 4, “3745
FRU Exchange” on page 4-1.
018
Were HPTSS diagnostics being run for a sus-
pected FESH card?
Yes No
019
Go to Step 022.
020
– In 3745 frame 01 (at tailgate location 01Q),
remove the cables from the HPTSS lines to be
tested. Refer to Figure 4-2 on page 4-4.
– Install wrap plugs in the sockets of 01Q for the
lines to be tested.
– Update the CDF to show that the lines to be
tested have wrap plugs installed. Refer to the
IBM 3745 Communication Controller Service
Function
(CDF chapter).
– Run one of the following HPTSS diagnostic rou-
tines:
VI and VK if V.35 wrap plug is installed
VJ and VK if X.21 wrap plug is installed
VI, VJ, and VK if both types of wrap plugs
are installed.
Refer to “How to Run Internal Function Tests”
on page 3-9.
Did the diagnostics run free of error?
Yes No
021
Go to Step 013 on page 4-99.
022
(Step 022 continues)
022 (continued)
Is the FRU you were processing the last FRU
called for the error?
Yes No
023
You have an intermittent error or an error
not detected by this diagnostic.
Continue using this manual for the next
FRU called. Go to “3745 FRU List” on
page 1-53.
024
All parts of the machine required for FRU
exchange will now be available for service.
Change all FRUs called (use, Chapter 4, “3745
FRU Exchange” on page 4-1).
025
Have you been told to exchange all FRUs for
an intermittent problem?
Yes No
026
Go to Step 032.
027
Did the diagnostics run error free or power
successfully ON?
Yes No
028
You have a problem with the new FRU. Try
another one or put the original back in.
Refer to Chapter 4, “3745 FRU Exchange”
on page 4-1 and continue with next Step.
029
Have all the FRUs called been exchanged?
Yes No
030
Go to Chapter 4, “3745 FRU Exchange” on
page 4-1 for next FRU called.
031
Go to “CE Leaving Procedure” on page 4-102.
032
(Step 032 continues)
4-100 3745 Models 130 to 17A: MIP