Chapter 6. System Reference Code (SRC) Information
Introduction..............191
SRCformats..............191
Word1-SRCgeneralinformation.....193
Identifying SRCs ..........193
Word 2 - System status information .....194
Statusindicators..........194
System Reference Codes (SRCs) .......196
General system and Unit Reference Code (URC)
information.............196
System Reference Codes (SRCs) .....196
LIC Unit Reference Code Groups.....199
SPCN informational concurrent maintenance
SRCs ...............201
IPL status SRCs ...........201
General status SRCs ..........214
Introduction
The system reference code (SRC) is a sequence of data words (codes) that:
vIdentify a system status
vDescribe a detected hardware, Licensed Internal Code (LIC), or software failure
vDescribe the unit that is reporting the failure and its location.
SRCs can display on the control panel, appear in a system console message, appear
in the Primary partition’s console for secondary partitions, or appear in the
product activity log (see Chapter 3, “ProductActivity Log”on page99). For details
on how SRC information displays on the control panel, see “SRC formats”.
The system gathers information about an error as the system detects the error. The
Product Activity Log (PAL)logs and stores the error information. An SRC encodes
information used to evaluate or identify a system-detected hardware or software
error, failure, or status. The failure information may include the failing condition or
part (or unit) that can be exchanged or replaced and its location. The SRC links to
the problem determination procedure when the element detecting the failure
cannot isolate the failing condition. The SRC link completes the isolation process.
In summary, the SRC provides the first-failure-data-captureinformation. The
customer or support representative uses SRCs during problem determination,
repair actions, and verification. The SRC provides a link to the problem
determination procedures (hard or soft copy). Use the SRC and the problem
determination procedures to isolate the problem.

SRC formats

Models 150, 170, 250, 4xx, 50x, 51x, 530, 53S, 6xx, 7xx, SB1, S10, S20, S30, and S40
The control panel automatically displays the Function 11 word when it shows the
SRC (see “Word 1 - SRC general information”on page193). You can select other
words (Functions 12 through 19) by using the control panel Increment (↑),
Decrement (↓), and Enter pushbuttons. Some portions of the SRC record might not
contain data. SRC records vary in length (up to 36 bytes) and display as described
in the following sections.
SRC records show with a -3 next to the function number in the Function/Data
display on all stage 3 hardware iSeries System Units (for example,
11-3 xxxx xxxx). The -3 indicates that the system uses stage three hardware. For
© Copyright IBM Corp. 1997, 2002 191