Sony SRS-X9 - Manual (Page 314)

Personal Audio System
SRS-X9
The power indicator does not turn off after disconnecting the AC power cord.
The (on/standby) indicator may not turn off immediately after disconnecting the power cord. This is not a
malfunction. The (on/standby) indicator may remain lit for up to 2 minutes.
Notes on use
4-535-194-11(3)
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