ELNA 740 EXCELLENCE - Operating and safety instructions

eXcellence 740
A Board Replacement

Top Cover Removal
1. Lift up the handle and remove
the small phillip's head screw on
the left side of the machine
2. Put the handle down and lift up the top
cover lid. Locate the two large phillip’s head
screws inside and remove them completely.
3. Raise the handle and start to lift
up on the left side of the top cover.
As you lift up be careful of three
clips that hold the top cover firmly
to the front panel.
4. Continue to lift up and bring the top cover
towards the back of the machine to free it
from the handle unit.
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Belt Cover Removal
1. Lift the handle up and locate the
small philip’s head screw on the right
hand side at the top of the belt cover.
Just loosen this screw.
2. Look at the right side of the
machine and locate the philip’s head
screw a couple of inches below the
hand wheel and remove the screw
completely.
3. Gently lay the machine down on it’s
back and locate the two phillip’s head
screws that are holding the bottom part
of the bed cover to the casting. Just
loosen these screws.
(* Two loosen the two screws, you do
not need to remove the base plate!)
4. Stand the machine up and grab the
top of the belt cover from the rear and
start to pull it towards the front of the
machine. Release the belt cover from
the front panel and remove completely.
2

Front Panel Removal
1. Open the left side of the machine and locate
the small phillip’s head screw that is holding
the front panel to the casting. Just loosen this
screw.
2. At the upper right hand side of the front
panel there is a phillip’s head screw that
needs to be loosened.
3. Looking through the right hand
side of the machine there is a screw
that is in the inside and this phillip’s
head screw just needs to be
loosened as well.
(Picture shown with base plate
removed , but you can loose the
screws with the base plate
attached)
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5. Use a small flat head screwdriver and
place it between the rear panel and the
casting and push down to release the
clip that is holding the front panel. Gently
place your hand on top of the front panel
and start to pull away from the machine
while being careful of other clips.
6. Once the front panel is loose from the
casting, start to unplug the 5 wires that
hold it to the machine until the front panel
is completely free from the machine.
4

‘A’ Board Removal
1. Remove the 2 screws that hold the
‘A’ board to the front panel.
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2. Only loosen this set screw.
3. Unplug all wires connected to the A board. Remove the ‘A’ board and the power
supply cable. You must use the power supply cable that comes with the new A board.
Return this
board back to
Elna USA
Discard this cable

‘K’ Board Removal
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1. Peel back the protective tape holding the
wires to the ‘K’ board.
2. Gently remove the flexible cable that
connects the touch panel to the ‘K’ board.
Follow that by also removing the 3 wires on the
left-side of the board.
3. Move the wires to the side and remove the 7
screws that hold the board to the front panel.

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4. Gently pull the jog dial and cap straight up,
discard the old dial and cap.
5. Install the new dial and cap, then
line the unit up and place it back onto
the ‘K’ board.
6. Plug back the flexible cable and
reattach the protective tape. Put back
all 7 screws making sure jog dial turns
free and is not touching the front
panel. Tighten the screws.

A-Board Replacement
1. Remove and discard the old cord guide
plate. Install the new plate, do not tighten the
screw yet.
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2. Gently slide the power supply
cable thru the cord guide and
behind the white post, as shown
in the picture. Failure to follow
these instructions can cause
power cord cable interference
with motor belt which can
damage the A board unit.
3. Connect the power supply
cable to the power supply.
Double check again making
sure both wires are positioned
correctly. Tighten the cord guide
screw making sure not to pinch
the wires.

A-Board Replacement
1. Align the ‘A’ board and slide the cables thru the opening space on the
lower supporter plate.
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2. While holding the A board, start connecting the cables, start with the small
white and brown connectors.