Toshiba e-studio 450 Operator's Manual page 247

9 : REPLACE TONER CARTRIDGE symbol
Blinks when the toner cartridge runs out of toner.
"3.REPLACE TONER CARTRIDGE SYMBOL"
10: REPLACE TONER BAG symbol
Blinks when the toner bag becomes full of used toner.
"4.REPLACE TONER BAG SYMBOL"
11: SADDLE STITCHING UNIT MISFEED symbol
Blinks when a paper misfeed occurs inside the saddle stitch unit of the finisher (optional).
"13. Paper Misfeed in the Saddle-stitch Finisher (optional: MJ-1024)"
12: FINISHER/HOLE PUNCH UNIT MISFEED symbol
Blinks when a paper misfeed occurs inside the finisher (optional) or hole punch unit (optional).
"10. Paper Misfeed in the Hole Punch Unit (optional)"
13: CALL SERVICE symbol
Blinks when inspection and maintenance by a service technician are necessary.
"Call Service Symbol"
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