System Unit Description
1-9
Location Codes
Because the same diagnostic programs are used on all of the system units, a location code
is used to physically locate a failing device or unit. The location code is displayed along with
the service request number (SRN) when the diagnostic programs isolate a failure. If the
location code is not known, you can run the Display Previous Diagnostic Results service aid
to display the results of the last time the diagnostic programs were run.
The rack-type system unit has several labels on the drawers and devices. These help the
operator and service person identify various drawers and devices. The drawer ID should
match the slot location of the adapter that drives it. The SCSI devices may be labeled with a
number that identifies the SCSI address the device is set to. See Appendix A to determine
the physical location of a device.
Location Code Format for 7135, and 9334
The location code formats for the 7135 and 9334 are described in the publications for the
7135 and 9334.
Location Code Format for Non-SCSI Devices
The following example is for non-SCSI devices. These include planars, memory cards,
adapters, and async distribution boxes.
Use the example to determine the physical location of a device.
Note: The G and H fields each can contain one, two, or three characters.
AB - CD - EF - GH
Connector number on an adapter or planar.
Slot number of the adapter, memory card, or adapter for
Always 0 on workstations. Drawer ID or slot number of the
the identified device.
Always 0.
adapter that drives the drawer in a rack-type system unit.
Async port number or FRU location on a card or planar.
