Appendix B
Power-Up Troubleshooting Procedures
This appendix gives detailed power-up troubleshooting procedures.
The H7206-B diagnostic LEDs can help you troubleshoot the system.
Table B–1 lists the meaning of each LED.
Table B–1: H7206-B Diagnostic LEDs
LED
Color
Meaning
9
Red
Fault (airflow, interlock, overtemperature)
8
Red
XMI-1 module in XMI-2 card cage
7
Red
H7214 or H7242 installed incorrectly
6
Red
VAXBI—H7214 fault
5
Red
VAXBI—H7215 fault
4
Red
XMI—H7242 fault
3
Red
XMI—H7214 fault
2
Red
XMI—H7215 fault
1
Green
+14V logic bias is okay
NOTE:
LEDs 5 and 6 will always be lit in Standby mode since the VAXBI
side is off in this key position. The H7206-B diagnostic LEDs may not
indicate problems with regulators if the status cables are not correctly seated.
Power-Up Troubleshooting Procedures
B–1
