About Restrictions in Sleep Mode and Deep Sleep Mode

This section describes the restrictions when the machine is in Sleep mode or Deep Sleep mode.

If the machine displays an error, the machine does not enter Sleep mode or Deep Sleep mode.

In Sleep mode, the network function is restricted as follows.

The machine does not enter Deep Sleep mode

The machine does not enter Deep Sleep mode in the following cases.

  • IPSec is enabled

  • A TCP connection is established

    Example: A connection is established with Telnet or FTP.

    When the transition time to enter Sleep mode or Deep Sleep mode from Power Save mode elapses and the connection is disconnected, the machine enters Sleep mode.

  • E-mail reception is enabled

  • Wireless LAN is enabled

  • Google Cloud Print is enabled

  • LLTD is enabled

  • HUB Link Status is 1000BASE-T

  • IPv6 Global Address is assigned

  • Access Control in the Access Control settings is enabled and Local IC Card or LDAP IC Card in the Authentication Method is enabled.

Cannot print

In Deep Sleep mode, you cannot use the following protocols to print.

  • IPv6

  • NBT

  • WSDPrint

Cannot search or set

In Deep Sleep mode, you cannot search or set by using the following functions and protocols.

  • NBT

  • PnP-X

  • UPnP

  • LLTD

  • MIB*

*References with some supported MIB (the Get command) are possible in Deep Sleep mode.

Protocols that have the client function do not operate

In Deep Sleep mode, the following protocols that have the client function do not operate.

  • E-mail alert*2

  • SNMP Trap

  • WINS*1

  • SNTP*2

*1

The elapse time in Deep Sleep mode is not included in the intervals of WINS update time.

WINS regular updates are not performed in Deep Sleep mode, possibly resulting in names that are registered in the WINS server being deleted.

*2

The elapse time in Deep Sleep mode is not included in the intervals of the e-mail alert notification time and the intervals of the NTP server update time.

The machine automatically enters Sleep mode from Deep Sleep mode

In a network environment where a large number of packets are sent, the machine automatically exits Deep Sleep mode to Sleep mode and responds.

Also, if a terminal that runs searches with Bonjour, such as Mac or iPhone, is connected to the same network, the machine automatically exits Deep Sleep mode to Sleep mode and responds.

This machine automatically enters Deep Sleep mode after a certain period of time.