IBM INFO PRINT 3000 - Manual (Page 222)

8. Place the new toner collector bag in the toner collector case.
9.
Return the toner collector case to the printer.
Note: Be sure to insert the toner collector case firmly enough to depress the
spring-loaded sensor tab in the rear of the cavity.
10. Attach the ring to the hook and push down the latch on the toner collector
case.
11. Close the rear center cover.
12. Press Ready pushbutton on the Display Touch Screen to continue.
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InfoPrint 3000 Operator’s Guide