NEC 870 - SuperScript B/W Laser Printer Online User's Manual page 142

Appendix D: 870 Status Monitor Icons
Table 4-1: Status Monitor Icons—
Ready (green light steady)
Printing (green light blinks)
Off line
Paper Jam
Error (red light)
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messages will change to reflect current printer conditions
Job Complete
Add Paper
Busy (yellow light blinks)
Manual Feed
2-Sided Job Pause
Energy Saving
(green light blinks)
Print to File
Print to Network Printer
Print to Fax