IBM 4332-004 - InfoPrint 40 B/W Laser Printer User Manual page 222

toward the duplex unit to prevent it from reconnecting.
7. Disconnect the safety strap from the printer.
8. Use both hands to remove the duplex unit. Lift the duplex unit to unlock
it from the auxiliary tray support, then pull it away from the printer.
9. Store the duplex unit in a safe location.
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