IBM RS/6000 SP manual Maintenance Analysis Procedures MAPs

Chapter 1. Maintenance Analysis Procedures (MAPs)

This chapter provides information for identifying problems and guides you to the most likely failed Field Replaceable Unit (FRU). The MAPs then refer you to the FRU Removal/Replacement procedures for the corrective action.

vªSP Switch description and problem determination (MAP 0590)º

vªSP Switch environment (MAP 0600)º on page 1-5

vªSP Switch power (MAP 0610)º on page 1-13

vªSP Switch function (MAP 0620)º on page 1-17

SP Switch MAPs

SP Switch description and problem determination (MAP 0590)

Purpose of this MAP

This MAP describes the physical characteristics of each switch type and provides a table (Table 1-1 on page 1-4) containing diagnostic information.

Each switch network has the following components:

vSwitch adapter cards (one per processor node)

vSP Switch

vSwitch internal data cables

vSwitch power cable

vSwitch wrap plugs (male 77G0818 and female 46H9688 for SPS). Refer to Figure 1-2 on page 1-4for views of the wrap plug.

vSwitch external data cables (multi-frame only)

Attention:

1.Switch data plug/jack connector pins are easily bent. Check for bent pins on male plugs or bent pin guides on female jacks if a cable is difficult to plug. Problems with bent pins or pin guides can propagate to new plugs/jacks if not corrected first.

2.All connected SP Switches must be running from the same master clock. If the SP Switches have not been set properly, all processor nodes in a logical frame will be uninitialized. Refer to ªSelecting appropriate switch clocksº on page 3-6for these procedures.

Refer to Figure 1-1 on page 1-2for a high-level view of the RS/6000 SP Switch.

Switch connection types

Standard node

Processor nodes in 9076 SP frames are attached to the SP Switches with switch cables.

Dependent node

Switch adapter resides outside of the 9076 SP frame. Each dependent node is a single SP Switch Router Adapter in the 9077 Switch Router. There can be several dependent nodes in each SP Switch Router.

Switch-to-switch

Connections between SP Switches.

SP Switch types

SPS All clocks are distributed through data cables. External clock inputs are selected from J3, J4, or J5.

© Copyright IBM Corp. 1999, 2002 1-1