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20 September 1999
ENERGY SAVER MODES
2.11.5 NIGHT MODE
This is used instead of auto off mode when an optional fax and/or printer unit is
installed.
There are two types of night mode: Night Stand-by Mode and Night Mode. The
difference between night stand-by mode and night mode is the machine's condition
when the machine enters auto off mode.
Entering night stand-by and night modes
The machine enters the night stand-by mode and night modes when one of the
following is done.
• The operation switch is pressed to turn the power off
• The auto off timer runs out (the operation switch is then turned off)
If the machine is in one or more of the following conditions, the machine enters
night stand-by mode. If not, the machine enters night mode.
• Error or SC condition
• An optional G4 unit is installed
• Image data is stored in the memory
• During memory Tx or polling Rx
• The handset is off hook
• An original is in the ADF
• The ADF is open
• Paper is left in the Duplex unit or staple tray
What happens in night stand-by and night modes
When the machine enters either of these modes, the fusing lamp and operation
switch turn off, and only the main power LED is lit.
Night stand-by mode
The system +5V and +24 V are supplied to all components.
Note that SP5-909 allows +24V to be supplied during night mode. This allows the
machine's condition to be displayed on the screen, so that any problems such as
paper end can be discovered quickly, to allow normal reception and printing of fax
messages.
Night mode
The system +5V supply is also turned off. However, +5VE (+5V for energy saver
mode) is still activated. When the machine detects a ringing signal, or off-hook
signal, the machine goes back to night stand-by mode and the system +5V and
+24V supplies are activated. Then the machine receives the incoming message
and prints it.
2-81
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