Breaking Down The Src; Dsa Breakdown - IBM iSeries Series Hardware Problem Analysis And Isolation

DANGER
To prevent power from switching on automatically during service procedures, select manual or secure mode
on the system unit control panel or disconnect the cables that connect to J15 and J16 on the frame being
serviced. (RSFTD211)
This page includes the following:
v "Breaking down the SRC": defines the fields of the SRC and their corresponding Control Panel function.
v "DSA breakdown": helps you determine a part position and item from the Direct Select Address (DSA).
v "Card positions" on page 65: contains the card positions for the model you are working on.
v "Converting from HSL loop number to port labels on the system unit or processor tower" on page 72
Breaking down the SRC: This table defines the fields of the SRC and their corresponding Control Panel
function. Word 7 of the SRC allows you to determine the correct Bus number, bus type, multi-adapter
bridge number, multi-adapter bridge function number and logical card number from the Direct Select
Address (DSA). Physical card slot labels and card positions for PCI busses are determined by using the
DSA and the appropriate system unit or expansion tower card position table. See "Card positions" on page
65 in this page.
Table 1. SRC breakdown
Control
panel
SRC word function
1 11
1-extended SRC 11
information
1-extended SRC 11
information
1-extended SRC 11
information
2 12
3 12
4 12
5 12
6 13
7 13
8 13
9 13
DSA breakdown: Follow the instructions below to determine a part position and item from the Direct
Select Address (DSA).
1. Break down the DSA into the bus number, the multi-adapter bridge number, and the multi-adapter
bridge function number as shown in the Table 2. DSA breakdown (See page 64) below.
2. Use the System Configuration List or Hardware Service Manager (HSM) to determine if the bus is
located in the system unit or an I/O tower.
Panel
function
characters Format
1-8 B600 uuuu
9-16 iiii
17-24 ffff
25-32 bbbb
1-8 MIGVEP62
9-16 cccc cccc
17-24 pppp pppp
25-32 qqqq qqqq
1-8 qqqq qqqq
9-16 BBBB Ccbb
17-24 TTTT MMMM
25-32 uuuu uuuu
Description
uuuu = unit reference code (69xx)
Frame ID of the failing resource
Frame location
Board position
See Hardware SRC formats for details.
Component reference code
Programming reference code
Program reference code high order qualifier
Program reference code low order qualifier
Bus, card, board Direct Select Addresses (DSA). See
"DSA breakdown" below. If BBBB is greater than or
equal to 0100, then the BBBB value is the HSL loop
number.
Type and model of failing item (if non-zero)
Unit address (if non-zero)
Analyze hardware problems
63