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3745 FRU Exchange Procedure
Action to Take After a Diagnostic Run or an FRU Exchange
Diagnostic and Exchange Result Analysis 0000
001
This procedure analyzes the results of the diag-
nostics or an FRU exchange and explains what
must be done afterwards.
When MOSS diagnostics detect an error, a hex
code is set on the control panel. The code can be
decoded by using “3745 Control Panel Codes” on
page 1-15.
When ODG/CDG diagnostics detect an error, a
reference code is given on the diagnostic screen.
See Figure 3-7 on page 3-12.
From Menu 3, select the BRC function. Enter the
reference code. The action to be taken is dis-
played. See “Using Reference Codes” on
page 1-14.
Did diagnostics initialization completed and
the diagnostics start to run?
Yes No
002
Start the MOSS diagnostics. Refer to “How
to Run MOSS Diagnostics” on page 3-4.
003
Did the diagnostics run without a message for
manual intervention?
Yes No
004
Follow the instructions given by the diagnos-
tics. Go back to this procedure according to
the result.
005
Was the diagnostic result obtained before any
FRUs were exchanged?
Yes No
006
Go to Step 025 on page 4-100.
007
(Step 007 continues)
007 (continued)
Did the diagnostic detect a failure?
Yes No
008
– Go to Step 018 on page 4-100.
009
Was the failure other than 'unexpected error'?
Yes No
010
Was the diagnostic running in CDG
mode?
Yes No
011
Run the previous diagnostic for the
upper level in the 'run all' diagnostics.
For example, TRSS > IOC Bus >
CCU. Go to “3745 Diagnostic
Requirement” on page 1-60
012
Analyse the reference code. Refer to “Using
Reference Codes” on page 1-14. Continue
with Step 013.
013
You may have started this service call to
exchange FRUs called by a reference code or
panel code.
Is the first FRU called by the diagnostics dif-
ferent from the FRU you were going to
exchange?
Yes No
014
Perform FRU exchange using Chapter 4,
“3745 FRU Exchange” on page 4-1.
015
(Step 015 continues)
Chapter 4. 3745 FRU Exchange 4-99