Sony PCG-Z1WAMP2 VAIO User Guide (primary manual) User Manual page 83

Disconnecting a printer
You can disconnect the printer cable when the computer is on or off. Disconnecting a printer when the computer is in a
power saving mode (Standby or Hibernate) may cause the computer to malfunction.
To disconnect a printer
1.
Make sure all print jobs are completed.
2.
Unplug the printer cable from the computer.
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