SPRT SP-POS891 User Manual page 12

The details are as below:
.. Non-recoverable error, the indicator flickers several times, then persistent
①
lighting. The times of flickering means the error type,
ERROR Type
LED Flikers once:Internal memory
reading and writing error
LED Flikers twice:over-voltage
LED Flikers three
times:under-voltage
LED Flikers four times: CPU
execution error (wrong address)
Non-recoverable
error
LED Flikers five times: UIB error
LED Flikers six times: FLASH
writing error
LED Flikers seven times: parameter
writing error
LED
Temperature testing circuit error
. Recoverable error, indicator flickers constantly, then persistent off for one period.
②
ERROR Type
Recoverable LED Flikers once:Cutter
error position error
. Auto-recoverable error, indicator flickers constantly, including printing head
③
over-heat error and upper case cover opening error during printing.
ERROR Type
Auto-recoverabl
e error
ERROR Description
Flikers eight
ERROR Description
ERROR Description
LED Flickers constantly: printing head
over-heat; upper case cover opening
error during printing
ERROR Indicator Flickering
times:
ERROR Indicator Flickering
Type
ERROR Indicator Flickering
10
Type
Type