Upgrading The Firmware On The Fax Control Pwb - Kyocera DF-420 Service Manual

1-6 Requirements on PWB Replacement
1-6-1

Upgrading the firmware on the fax control PWB

Firmware upgrading requires the following tools:
Compact Flash (Products manufactured by SANDISK are recommended.)
Procedure
1. Enter the maintenance mode and run main-
tenance item U680 (Displaying the fax
board ROM version). Check the version of
the ROM on the fax control PWB (see page
1-3-32).
2. Press the power key on the operation panel
to off. Make sure that the Power lamp is off
before turning off the main power switch.
And then unplug the power cable from the
wall outlet.
3. Remove the screw and remove the slot
cover.
4. Insert Compact Flash in a notch hole of the
machine.
Insert the surface of Compact Flash toward
the machine rear.
5. Insert the power plug and turn the main
power switch on.
6. Enter the maintenance mode and run main-
tenance item U926 (Rewriting FAX program)
(see page 1-3-38).
Downloading of the fax program and fax
fonts start.
Caution:
Never turn the main power switch off during
upgrading.
7. Turn the main power switch off and unplug
the power cable from the wall outlet.
8. Remove Compact Flash from the machine.
9. Refit the slot cover.
10. Insert the power plug and turn the main
power switch on.
11. Enter the maintenance mode and run main-
tenance item U680 (Displaying the fax
board ROM version). Check that the version
of the ROM is going up.
Compact Flash
Screw
Slot cover
Figure 1-6-1
3MZ
1-6-1