IBM DCS3860, Installation, User'S, And Maintenance Manual

Page: 154 / 204

Table 22. Seven-segment display sequence code definitions (continued) .
Category Category Code Detail Codes
Notes :
1.
xy+
Indicates that the diagnostic LED is lit.
2.
xy-
Indicates that the diagnostic LED is turned off.
3.
Lx+
Lockdown codes (See Table 24 on page 137)
4.
dash+
All segments are off except the middle segments and the diagnostic light is on.
5.
blank-
All segments are off and the diagnostic light is off.
6.
dx+
Used when there is a single memory system for processor and data cache.
7.
Cx+
Used when there are separate processor and data cache memory systems.
8.
Px+
Used when there are separate processor and data cache memory systems.
9. Category-Detail separator is used when there is more than one category-detail pair in
the sequence. For examples, see Table 23
10. End-of-sequence indicator is automatically inserted by hardware at the end of the
sequence. Example:
SE+ 88+ blank- (repeat)
11. If an enclosure ID is being displayed, this sequence is programmed to display. The
controller is then held in reset.
12. The enclosure ID is nominally displayed during normal operation. This operational
state is displayed if an internal controller component failure occurs while the
controller is online. An additional detail code identifies the failed component as
defined for the Component Failure category. This sequence will continue to display
even if the controller is later placed offline (held in reset) to service the failed
component.
Table 23. Repeating sequences on the seven-segment display and corresponding errors
Repeating Sequence Startup and Operational Error
Controller power-on failure:
SE+ 88+ blank-
v
Initial phase of normal power-on
controller insertion
v
Insertion of a controller while held in
reset
Operational failure:
xy- (static controller enclosure ID) Normal operation, where xy is the ID of the
enclosure
OS+ Sd+ blank-
During start-of-day (SOD) processing that is
processing when the controller reaches a
fully powered-up state
OS+ OL+ blank-
Controller is placed in reset while displaying
the enclosure ID
OS+ bb+ blank-
Controller is operating on batteries (cache
backup)
OS+ OH+ blank-
The processor temperature exceeds the
warning level
Component failure when the controller is operational:
OS+ CF+ HX+ blank-
The host interface card failed
OS+ CF+ Fx+ blank-
The flash drive failed
Power-on diagnostic failure:
SE+ dF+ blank-
Failure of a component that is not a field
replaceable unit is detected
136
IBM System Storage DCS3860 Storage System: Installation, User's, and Maintenance Guide