Table 17.
System Model Name of FRU to
Exchange
FRU Position Link to Location
Diagram
Link to Failing
Component
Service
Information.
(CCIN, PN,
Removal and
Installation
Procedure)
830 and SB2 Tower Card CB1 “Locations —
Models 830, SB2
System Unit
with FC 9074
Base I/O Tower”
on page 709.
Table 41 on
page 710.
840 and SB3 Tower Card CB1 Figure 36 on
page 724.
Table 43 on
page 725.
This ends the procedure.
BUS1
The failing item is any card, cable or card enclosure connected to bus 1 that might
cause an interface failure between the service processor and the system unit
processor.
The System Unit or the Base I/O Tower has failed and the diagnostic software was
not able to isolate the failure to a single FRU.
Check the last IPL status code in SRC data word 3 in the second half of control
panel function 12.
12
xxxxxxxxxxxxSSSS SSSS = IPL status code
xxxxxxxxxxxxxxxx
If this value is 2000 through 2009 then use the IPLINTF symbolic FRU instead of
following this procedure. If this value is 200A through 2018 then follow this
procedure.
1. Attempt a SLOW OVERRIDE IPL to run full processor hardware diagnostics.
Power off the system from the control panel. Change the IPL mode to manual,
and the IPL speed to SLOW OVERRIDE (S) using control panel function 2.
Power on the system.
Does the same SRC occur ?
Yes No
↓ Follow the service actions for the new SRC.
2. Power off the system from the control panel. Check the cables and connections
between the System Unit and the Base I/O Tower. Reseat cables where
possible.
Power on the system.
Does the same SRC occur ?
Yes No
↓ Follow the service actions for the new SRC.
Symbolic FRUs
Chapter 3. Problem Isolation Procedures (PIPs), Failing Items, and Symbolic FRU Isolation 507
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