Chapter 13. Maintenance and troubleshooting 581
Here is a typical troubleshooting procedure:
1. Start by considering the states of the power LED 7 for each 4939 expansion canister, as
shown in Figure 13-3 on page 579 and Table 13-9 here. Continue to troubleshoot the
canister until the power LED is ON.
Table 13-9 Expansion canister Power LED states
2. If the power LED is on, consider the states of the status and fault LEDs for each expansion
canister, as shown in Table 13-10.
Table 13-10 Expansion canister status LED states
LED
layout
LED Name Color States
Power
Green OFF – There is no power to the expansion canister. Make sure that the
CMM has powered on the expansion canister. The CMM event log
might indicate why the expansion canister has no power. Try reseating
it. If the state persists, follow the hardware replacement procedures for
the parts in the following order:
– Expansion canister.
– Expansion enclosure.
ON SOLID – The expansion canister is powered on. It is the normal
state.
BLINK – The expansion canister is in a powered down state. Use the
CMM to power on the expansion canister.
FAST BLINK – The management controller is in the process of
communicating with the Chassis Management Module (CMM) during
initial insertion of the expansion canister. If the expansion canister
remains in this state for more than 10 minutes, try reseating it. If the
state persists, follow the hardware replacement procedure for the
expansion canister.
Tip: Although it is useful to understand the meaning of the expansion canister LEDs,
service actions should always start by examining the IBM Flex System V7000 Storage
Node management GUI event log and running the Fix Procedures for the reported
errors in the order suggested.
LED
layout
LED Name Color States
Expansion
canister fault
Amber OFF – The expansion canister is operating correctly, or it has not been
possible to isolate the issue to make it the expansion canister.
ON SOLID – The expansion canister has failed and should be
replaced. If it is available, use the IBM Flex System V7000 Storage
Node management GUI event log Fix Procedures to guide the
replacement.
Expansion
canister
identify
Blue OFF – The expansion canister is not in identify state by the controller
management system
ON SOLID – The expansion canister has been identified in response to
the controller management system
BLINK – This occurs during power on and power-on self-test (POST)
activitie
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