IBM RS/6000 SP, Maintenance Information

Page: 326 / 388

MAP 0520: Switch Assembly Environment
P2 (Fan 1)
2 x 2
P6 (Power Card)
2 x 1
P4 (Power Card)
2 x 1
Front Chassis Cable Inner Chassis Cable
P5
(Switch SV Card)
2 x 20
P1 P3
P3 (Fan 2)
2 x 2
P4 (Fan 3)
2 x 2
P5 (Fan 4)
2 x 2
P6 (Fan 5)
2 x 2
P7, P8 (CB) P9 (LED)
Figure 1-34. SPS Inner Chassis and Front Chassis Cables
020
Component replaced or reseated.
– Reconnect all cables inside the switch assembly.
– If this is an SPS or SPS-8, install front panel assembly and reinstall front retaining screws.
– If this is an HiPS or HiPS-LC8, replace the switch from service position. Refer to "Service Position
Procedures" in
IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and Service Proce-
dures.
– Connect only power (J1) and supervisor (J2) cables at the rear of the switch assembly.
– Put circuit breaker at the front of switch assembly in the On (‘1’) position.
– Check the Environmental (yellow) LED for an ON or FLASHING condition.
Is the Environmental (yellow) LED ON or FLASHING?
Yes No
021
Problem resolved
– Go to Step 030 on page 1-307 to verify fix.
022
– Put circuit breaker at the front of the switch assembly in the Off (‘0’) position.
– Return to Step 019 on page 1-304 to continue service with the next highest priority.
023
Over temperature condition: “shutdownTemp”
Temperature is out of specified range; however, no serious electrical current or fan speed problems have
been detected.
– Check for airflow blockage at air intakes and exhaust of the switch assembly and system frame. Also,
check air temperature around the frame, looking for sources of abnormally high temperatures (above
40°C or 104°F).
1-306
RS/6000 SP MAPs