Sleep Mode

You can specify the settings for sleep mode using the following procedures.

IMPORTANT
Power consumption when the power is OFF Even if the printer is turned OFF, power is still consumed slightly while the power plug is inserted in the AC power outlet. To stop the power consumption completely, unplug the power plug from the AC power outlet.

Setting the Printer to Sleep Mode

There are the following four methods for setting the printer to Sleep Mode.

Setting the printer to Sleep Mode automatically when it is not operating

Specify the time interval until the printer enters Sleep Mode in [Sleep Migration Time].

You can specify the time interval between [1 minute] and [120 minutes] on LBP843Cx, and between [1 minute] and [60 minutes] on LBP841Cdn. The default is [1 minute].

We recommend that you use this option in the default setting.

Setting the printer to Sleep Mode using the printer's control panel

Press [

] (Energy Saver) on the printer's control panel.

Setting the printer to Sleep Mode from a network computer

Select [Sleep] from [Settings/Registration] on the Remote UI → [Output/Control] → [Device Control], and then click [Execute].

Setting the printer to Sleep Mode on the designated time every day

Set the [Sleep Mode Timer] under [Timer Settings] to [On], and then set the time when it automatically goes in the Sleep Mode in [Sleep Mode Time].

If the above operations or settings are performed, and the entering conditions described in "Types of Sleep Mode" are fulfilled, the printer enters Sleep Mode.

Types of Sleep Mode

There are the following two types of Sleep Mode, and they vary in the entering conditions.

Types of Sleep Mode	Settings for [Sleep Mode] Which the Printer Can Enter		Entering Conditions
Types of Sleep Mode	[On]	[Deep Sleep]	Entering Conditions
Sleep Mode 1 (Printer Sleep mode) Power saving effect: Middle			There is no job on the print queue. A service call is not occurring. A paper jam is not occurring. No cover is open. The toner cartridge is installed. A toner cartridge has not reached the end of its life. It is not accessing USB memory.
Sleep Mode 2 (Deep Sleep mode) Power saving effect: Large			The conditions to enter Sleep Mode 1 are fulfilled. The items below in [Network] are set to [Off] . [WINS Resolution] in [TCP/IP Settings] [IPSec] in [TCP/IP Settings] (LBP843Cx only) [SMB Server] in [SMB] (If [SMB Server Name] is not specified, the printer can transition regardless of the settings for [SMB Server]) (LBP843Cx only) There has been no network communication for 15 seconds or more A USB cable is not connected An SD card is not being accessed (LBP843Cx only) No SNTP or DHCP communication is scheduled within the next 1 minute The wakeup function is not scheduled to activate within the next 1 minute [Ethernet Type] in [Ethernet Driver Settings] is a setting other than [1000 Base-T].

NOTE
To check which Sleep Mode the printer has entered You can check Sleep Mode using indicators on the control panel. Sleep Mode 1 The Ready indicator and Main Power indicator come on. However, the following indicator may come on. Message Indicator Comes on if the printer enters Sleep Mode when it is offline. Sleep Mode 2 The Ready indicator goes off and the Main Power indicator comes on. To configure the printer so that it does not enter Sleep Mode when an error occurs Set [Sleep Even if Error] to [Off]. To reduce power consumption even more with a USB connection Set [Deep Sleep Eco Prior] to [On]. However, specifying [On] may not release the printer from sleep mode. If not released, press [ ] (Energy Saver) in the control panel to release the printer from sleep mode. When using a utility software related to network When you are using some type of utility software related to network and you set Sleep Mode to [Deep Sleep], communications may fail. When using such type of utility software, please release Sleep Mode.

NOTE

To check which Sleep Mode the printer has entered

You can check Sleep Mode using indicators on the control panel.

Sleep Mode 1
The Ready indicator and Main Power indicator come on.
However, the following indicator may come on.

Message Indicator
Comes on if the printer enters Sleep Mode when it is offline.

Sleep Mode 2

The Ready indicator goes off and the Main Power indicator comes on.

To configure the printer so that it does not enter Sleep Mode when an error occurs

Set [Sleep Even if Error] to [Off].

To reduce power consumption even more with a USB connection

Set [Deep Sleep Eco Prior] to [On]. However, specifying [On] may not release the printer from sleep mode. If not released, press [

] (Energy Saver) in the control panel to release the printer from sleep mode.

When using a utility software related to network

When you are using some type of utility software related to network and you set Sleep Mode to [Deep Sleep], communications may fail. When using such type of utility software, please release Sleep Mode.

Releasing Sleep Mode

The following are the methods to release Sleep Mode.

Releasing Sleep Mode using the printer's control panel	Press the key on the printer's control panel. If the printer has entered Sleep Mode 2, you can release the mode when [ ] (Energy Saver) is pressed.
Releasing Sleep Mode on the designated time every day	Set the [Wake Up Timer] under [Timer Settings] to [On], and set the time when it automatically cancels the Sleep Mode in [Wake Up Time].
Releasing Sleep Mode from a computer	Send data to the printer. However, Sleep Mode is not released if data is sent without being printed out (jobs saved to boxes, etc.). Perform the following in the Remote UI. Set [Online] in the [Device Control] menu under [Settings/Registration], and click [Execute]. Display and set the [User Maintenance Menu] page in the [Preferences] menu under [Settings/Registration]

NOTE
Sleep Mode is released also in the following cases. When an error is occurring Sleep Mode 1 is released also when an error is occurring. However, it may not be released depending on the error type. When connecting a network cable The printer enters Sleep Mode 1 from Sleep Mode 2. When the printer is connected to a network or receives the unicast packet Sleep Mode 2 is released. When devices on a network are searched from application software or utility software Sleep Mode 2 is released.

NOTE

Sleep Mode is released also in the following cases.

When an error is occurring
Sleep Mode 1 is released also when an error is occurring. However, it may not be released depending on the error type.

When connecting a network cable
The printer enters Sleep Mode 1 from Sleep Mode 2.

When the printer is connected to a network or receives the unicast packet
Sleep Mode 2 is released.

When devices on a network are searched from application software or utility software
Sleep Mode 2 is released.