Self-Test Failure And Status Leds - HP 27115A Installation Manual

Self-Test Failure
and Status LEOs
WARNING
Caution
The self-test failure and status LEDs on the PCA display results of the PCA
self-test and the general status of PCA operation. To view the LEDs, you may
need to open the CIO card cage.
Operation of the computer with the I/O card cage open will expose
personnel to hazardous electrical power. For some systems, power to
the computer cannot be applied while the I/O card cage is open, due to
a safety interlock feature. Any attempt to defeat the safety interlock
and operate the computer will expose personnel to hazardous electrical
power and mechanical devices (such as ventilation fans).
The product does not comply with mandatory electromagnetic radiation and
interference (EMI and
RFI) regulations when the I/O card cage is open.
Figure 3-1 shows the location of the six self-test failure and status LED
indicators. The LED on the left is the "self-test failure LED". The remaining five
are the status LEDs used to indicate the operational status of the fiber-optic link
and the PCA.
o
Self-test failure
LE~~
Status ;J(LEDS
00000
C S R P A
Figure 3-1. Locations of the Self-Test Failure and Status LEOs
3-2 Troubleshooting and Diagnostics