SNBC BTP-R880NPI Service Manual page 4

Notes
1) Follow the steps in this manual hereafter during maintenance.
2) Make sure that the printer and the computer are turned off before plugging the communication cable,
changing print head or doing maintenance to the printer.
3) Be sure to protect it against electrostatic damage when maintaining print head and other electronics.
4) Time between turning on and turning off the printer is no less than 20 seconds.
5) Do not operate the printer when paper is end. Doing so can damage print head.
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BTP-R880NPII Service Manual