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1.4.16 Firmware installing mode
This mode is used to write the firmware (main program).
Refer to “1.1 Installing Firmware (Sub Firmware, Demo Firmware, and Main Firmware)” in
Chapter 4 for the detailed procedure.
1.4.17 Ready state of maintenance mode for service personnel
Drivers of the same number of virtual USB devices are required for the computer to
recognize the USB-connected terminals. If the machine is connected to the computer at each
time any repair work is performed, virtual USB devices with the same number of the repaired
machines are automatically configured on the computer. To prevent numerous virtual USB
devices from being configured, entering maintenance mode for service personnel enables
your computer to identify multiple terminals via one single virtual USB device.
Enter this mode when using the download utility or service setting tool by installing the
maintenance driver.
<Operating Procedure>
(1) Open the front cover while the power switch is turned OFF.
(2) Press and hold the [Go] key, and turn ON the power switch. The Toner, Drum, and Paper
LEDs light.
(3) Release the [Go] key. All LEDs go out.
(4) Press and hold the [Go] key more than two seconds. Check that the Paper LED is lit and
release the [Go] key. The machine returns to the ready state of maintenance mode for
service personnel. Close the front cover.
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