Use case
Display sequence
Persistent cache DIMM ECC errors OE L2 -- CF Cx blank-
Persistent processor or cache DIMM ECC errors OE L2 -- CF dx blank-
The controller is suspended as a result of persistent cache backup configuration errors
The write-protect switch is set during cache restore OE LC blank-
The memory size changed with dirty data in the flash
drives
OE L2 -- CF dx blank-
The controller is suspended as a result of diagnostic errors
Cache memory diagnostic failure dE L2 -- CF Cx blank-
Base controller diagnostic failure dE L3 -- CF b1 blank-
Base controller I/O Controller chip (IOC) diagnostic
failure
dE L3 -- CF b2 blank-
Seven-segment display lock-down codes
Diagnostic lock-down codes are displayed when the controller is not operational, either because of a
configuration problem or a hardware fault. The lock-down code is displayed as part of the seven-segment
display sequence.
The following table includes the lock-down codes and describes the conditions that cause the controller to
be in a suspended state:
Lock-down code
Description
L0 The controller types in a two-controller configuration are mismatched.
L1 Missing interconnect canister.
L2 A persistent memory error has occurred.
L3 A persistent hardware error has occurred.
L4 A persistent data protection error has occurred.
L5
An auto-code synchronization (ACS) failure has been detected.
L6
An unsupported HIC has been detected.
L7 A sub-model identifier either has not been set or has been mismatched.
L8 A memory configuration error has occurred.
L9 A link speed mismatch condition has been detected in either the I/O module (IOM) or
the power supply.
Lb A HIC configuration error has been detected.
LC A persistent cache backup configuration error has been detected.
Ld A mixed cache memory DIMMs condition has been detected.
LE Uncertified cache memory DIMM sizes have been detected.
LF
The controller has locked down in a suspended state with limited SYMbol support.
LH
Controller in Simplex Mode installed in the wrong slot.
LJ The controller does not have enough memory to support the configuration.
Chapter 5. System monitoring 185
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