IBM RS/6000 SP, Maintenance Information

Page: 132 / 388

MAP 0230: Wide Processor Node Control
011 (continued)
– Reoccurrence of intermittent fault has been detected.
– Treat this fault as a solid failure.
– Go to Step 024 on page 1-113.
012
– From the control workstation node front panel display:
Ÿ
Power-off processor node.
Ÿ
Power-on processor node.
Ÿ Check 3-digit LEDs for LED sequence indicating IPL.
Do the 3-digit LEDs change?
Yes No
013
Node supervisor card not responding to commands.
– Go to “MAP 0110: Supervisor Subsystem” on page 1-10.
014
Processor node is IPLing.
Do 3-digit LEDs eventually indicate completion of IPL sequence (i.e. blank or “uuu”)?
Yes No
015
Processor node has problem IPLing.
Do 3-digit LEDs stop at constant 200?
Yes No
016
– Go to Step 008 on page 1-88 to continue service.
017
Problem with SECURE signal.
– Go to Step 024 on page 1-113 to continue service.
018
– From node front panel display, click on “TTY” button to open a TTY console.
– From the TTY console:
Ÿ Select “Advanced Diagnostic Routines”
Ÿ Select “System Verification”
Ÿ Select “Base System”.
– Follow directions for the “Key Mode Switch Test”, setting the mode switch from the processor node‘s
front panel on the control workstation.
(Step 018 continues)
1-112
RS/6000 SP MAPs