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ESN (Key CD) security operating procedure
16
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How to resume normal operation
(ESN security lock out)
If power to the 54420 is disconnected while ESN security is
active (a Key CD was programmed), operation is disabled
until power is restored and the unit unlocked. Follow this
procedure to resume normal operation.
1 .
When the power is turned on after
disconnecting the battery power, a [SEC]
message will appear for two seconds.
Thereafter, the message changes to [DISC]
and the 54420 is ready to accept your Key CD
into the slot.
2 .
Insert your Key CD.
If the correct CD is inserted, an [OK] message will
appear for two seconds and the CD will begin playing.
• If an incorrect CD is inserted, an [ERR] message will
appear for two seconds, after which the CD will be
ejected.
• You must use the same CD used for Key CD
programming; a duplicate CD may not work properly.