SPRT SP-POS891 User Manual page 16

Quick enter method:
Open the paper case cover firstly when printer is power off. Hold the 【FEED】button
and switch on the printer, then release the 【FEED】button quickly, then printer enter
the program upgrade mode. At this time, the status indicator flash once a second.
Notice:
1. When printer enter the program upgrade mode, the paper-out indicator flash
means the interface can't be upgraded.
2. SP-POS891USd only supports USB interface upgrade mode.
Appendix A
This appendix is the method to set the printer parameter according to button
operation.
Setting introduction: Press【Paper cover】button to choose setting,when press it
once , the set become the next one and it will print the present set value; use 【FEED】
button to set the set value, when press it once , the set become the next one and it
will print the present set value.
General Setting:
Baud
Paper
Language
Rate cover
Paper cover
Paper
Fon
cover
Paper
Black
cover
Paper
Print density
cover
Paper
Paper-out
Cover
reprint
14
Paper
Print Speed
cover
Buzzer