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Chapter 4 CU Status Indication byLED Indicators
According to the ON/OFF states of the POWER and DATA LED indicators, you may
check the machine status of the CU-7011 as listed below.
POWER DATA Machine status
OFF OFF Power off
ON OFF Power on
ON ON Communicating with the host
Flashing slowly*1ON Updating the CU system program
Flashing slowly Flashing*2Waiting for retry after occurrence of a
CU system program updating error
Flashing slowly Flashing slowly System program failure
Solution: Contact your nearest dealer.
Flashing quickly*3Flashing quickly System program error
Solution: Restart the CU-7011. If this
error occurs frequently, contact your
nearest dealer.
*1At one-second intervals
*2At 100-ms intervals
*3At 50-ms intervals