20
General operating notices
Opening the transmitter housing
Carefully read the notices below before open-
ing the transmitter housing. It may be better if
unexperienced users ask a Graupner Service
location to take care of the procedures described
below.
The transmitter should only be opened in the following
situations:
• to convert a neutralized joystick to a non-neutralized
joystick or a non-neutralized joystick to a neutralized
joystick.
• to adjust joystick return tension.
Switch off the transmitter before opening
its cover.
Open the battery compartment as described on the
previous double-page. If the handrests are fi tted, undo
the three lower retaining screws of the six screws in
each handrest.
Now undo the fi ve recessed screws in the back of
the transmitter and the battery well using a PH1-size
cross-point screwdriver; see illustration:
Note that the screw-holes are inclined slightly to the
rear, so the cross-point screwdriver should be applied
at the corresponding angle.
Hold the two housing sections together by hand then
turn the transmitter upright over a suitable surface so
these 5 screws can fall out without getting lost. Now lift
up on the backplate carefully and place it to one side.
Important notices:
•
Ensure that the shorter screw – in the
battery well – does not fall inside the
transmitter.
• Make no modi cations of any kind to the cir-
cuitry as this will void the guarantee as well as
the unit‘s of cial permit.
This applies in particular to the switches in-
stalled on both sides of the front screen. If you
wish to change the arrangement, contact your
nearest Graupner Service Centre.
•
Be sure not to touch the circuit boards
with any metallic objects. Do not touch
contacts with your ngers.
• Never switch the transmitter on when its hou-
sing is open.
When you close the transmitter again, be sure
that …
• … no cables are caught between housing edges
when the backplate is put into position.
• … both housing parts are properly seated with one
another before screwing them together. Never force
the housing sections together.
• Turn the screws down into the existing housing
threads without stripping them out.
• … fi t the shorter of the fi ve screws in the battery
compartment again.
• … reconnect the battery.
• … re-install the handrests if you wish.
Lithium battery CR 2032
When you remove the transmitter back panel, you will
see the holder for a CR 2032 battery on the circuit
board below the aerial base, slightly left of centre:
Lithium battery
This battery maintains the date and time settings during
a transmitter power supply outage, for example when
the transmitter’s main battery is being replaced.
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