Octel XC1000, Service Manual

Page: 231 / 889

TROUBLESHOOTING
6-32 Edition One XC1000 Service
2. Check menu 13.11, Card Management, and verify that all cards are
active.
3. Open the front doors of the XC1000.
4. Look at the LEDs on the front edges of the logic cards. Replace any
card with an illuminated L2 LED. An L2 LED indicates a problem
with the logic card. If all of the logic cards appear to be working,
then one of the disk drives is probably faulty.
5. Open the rear doors of the cabinet. Ensure that the three LEDs on
each disk-drive front panel, as shown in Figure 6-12, are lit as follows:
During normal operation, the green
RUN LED is on, the red INOP LED
is off, and the yellow SEL LED flashes on during read and write
operations. If the RUN LED is off or the INOP LED is on, the drive is
faulty. Troubleshoot the drive, as described in section 6.2.4.5.
6. After replacing a suspected logic card or drive, clear all alarms in
menu 13.8, Review Current Alarm Status, and verify that the monitor
card SA and HW LEDs go off.
INOP
SEL
RUN
Figure 6-12. Disk-Drive LEDs.
6.4 EXTERNAL DIAGNOSTIC TOOLS
The main distribution board provides connection points for the following
remote diagnostic tools:
Remote alarm relays
Remote Diagnostic Administrative Center (RDAC)
Switching-Control-Center System (SCCS)
From the main distribution board, the relays, RDAC, and SCCS are routed to
the monitor card. Sections 6.4.1 through 6.4.3 describe these remote
diagnostic tools.
SECTION 6.3 – 6.4