User Guide

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3.5 Instruction for Auto Power Down(Sleep) Mode
The printer in the Power Down(Sleep) Mode will recover to the Print Ready Mode when receiving
commands or button operations.
However, print data received while shifting from the Sleep Mode to the print Ready Mode (for ap-
prox. 1 sec.) is discarded and cannot be printed.
Therefore, if the printer is in the Sleep Mode, please be sure to recover it to the Print Ready Mode be-
fore sending print data.
[ How to Recover to Print Ready Mode & How to Check ]
1) Send the Status command (DLE EOT EOT) and try to resend it until the printer receives the re-
turned status value (any value from 30H to 37H).
(*1
Or
2) Press the FEED button or the MODE button (the Power button for SM-T300 series) and conrm that
the Power lamp (Green LED) is turned on.
(*1: When the status value is not returned in the above 1) method, it is possible that the printer is
turned o by the Power OFF mode. In this case, turn the printer on manually.
 Auto Power Down at iOS mode [Bluetooth(Auto)]
At iOS mode [Bluetooth(Auto)] , set the Auto sleep mode to “NO USE” or Auto OFF mode.
When the printer wakes from the sleep mode, it cannot connect with the iOS device properly
due to the iOS specifications. Therefore, it is impossible to use the Auto Power Down when the
Communication mode of the printer is set to iOS mode [Bluetooth(Auto)].