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e-STUDIO2006/2306/2506/2007/2307/2507/2303A/2303AM/2803AM/2309A/2809A
OUTLINE OF THE MACHINE
3 - 77
3.16.2
Operation of DC Output Circuits
1. Starting line output
When the main switch of the equipment is turned ON, power starts supplying to all the lines only
when two doors (toner supply cover and right cover) are closed.
2. Stopping line output
When the main switch of the equipment is turned OFF, PWR-DN signal is output after the
instantaneous outage insurance time elapses and then the supply of each voltage stops.
To prevent this, the supply of these voltages stops after the PWR-DN signal is output and the
minimum retaining time elapses.
3. Output protection
Each output system includes an overcurrent and overvoltage protection circuits (a fuse and internal
protection circuit). This is to prevent the defectives which may be caused by an overcurrent due to a
short circuit or an overvoltage due to a short circuit between different voltages. If the protection
circuit is activated (except the case the fuse is blown out), remove the causes such as short-circuit.
Turn ON the power again to clear the overcurrent protection.
4. Recovering from super sleep mode (normal starting)
When the [ENERGY SAVER] button on the control panel is pressed during the super sleep mode, a
super sleep mode shifting/recovering signal (SYS-EN) is output from the MAIN board and then
voltage starts being supplied to all the lines, if no error was detected.
5. Shifting to super sleep mode (normal stopping)
While the main power supply switch is ON, holding down the control panel's [ENERGY SAVER]
button for more than one second will cause a Super Sleep Mode Entry/Recovery signal (SYS-EN) to
be output by the MAIN board after initialization is complete, and +24VS drops to approximately 12V
and is output.
The Super sleep mode is disabled under the following conditions.
- When operation is being performed in the self-diagnosis mode (Disabled until the main switch is
turned OFF)
6. State of the power supply
- Power OFF
The main switch of the equipment is turned OFF. Since DC voltage is not supplied to each board,
the equipment is not operable.
- Normal state (including Energy saving mode)
The main switch of the equipment is turned ON and DC voltage is supplied to each board. When
the cover of the equipment is closed, 24V DC voltage is supplied and the equipment enters into
the ready/printing state.
- Sleep mode
Since +24VS and +24VA DC voltage is supplied to the MAIN board and +24VD DC voltage is not
supplied, the machine enters the power saving mode.
- Super Sleep mode
Only +5VS DC voltage is outputted from the power supply unit and the [ENERGY SAVER] button
is monitored and turned on. The machine is in a sleep state at this time.
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