Spektrum DX7, DX7se Assembly Manual

1

Replacement Transmitter Antenna Assembly

Manual for the DX7 and DX7se

NOTICE

All instructions, warranties and other collateral documents are subject to
change at the sole discretion of Horizon Hobby, Inc. For up-to-date product
literature, visit http://www.horizonhobby.com and click on the support tab
for this product.

WARNING: READ AND FOLLOW ALL INSTRUCTIONS
This manual contains instructions for safely replacing a transmitter
antenna. This replacement antenna is a key component in a sophisticated
hobby product. The instructions require basic technical knowledge and
mechanical skill. The replacement should not be attempted by children or
beginner hobbyists.

Do not attempt disassembly, use with incompatible components, or
augment the product in any way, outside of these instructions. Failure to
follow each instruction and precaution could result in a break of signal
transmission, which will ultimately lead to damage to the product, property
and/or personal injury.

Read ALL instructions. If after reading these instructions you are not
confident in your ability to replace the antenna and perform a range check,
send the antenna and transmitter, free of charge, to the appropriate Horizon
Service Center where this procedure can be performed by an authorized
service technician. Or contact a distributor in your country of service.

Note: If it is decided to submit the unit for antenna replacement, Horizon
will pay the costs of shipping and labor associated with the replacement
of the antenna. However the cost to repair any OTHER damage done to the
product may be the responsibility of the customer, to be determined at the
sole discretion of Horizon Hobby Inc.

CAUTION: Never turn the radio on when the antenna is not attached to
the module. Powering up the transmitter without the antenna attached can
damage the transmitter.

INTrOduCTION

The following instructions are for replacing the antenna in a DX7 or DX7se.
Read them completely before beginning to replace your antenna.

Items Needed:

• New antenna assembly (SPM6818) • Medium Phillips head screwdriver

STEp 1

With the transmitter power switch in the “off” position, open the
battery compartment. Remove the battery pack. Be careful not to damage
the connector.

STEp 2

Using a Phillips screwdriver, remove the 6 screws holding the transmitter

case together.

STEp 3

Carefully remove the back case half. Put it aside. Be careful not to damage

the wires.

STEp 4

Disconnect the antenna wire where it connects to the RF module. Carefully
grasp the wire near the connector and pull straight up while wiggling the
wire. It should disconnect easily.

SPM6818

WWW.SPEKTRUMRC.COM

Horizon Service Center 4105 Fieldstone Road

Champaign, IL 61822
USA

877-504-0233

[e-mail]

Horizon Hobby Limited Units 1-4 Ployters Rd

Staple Tye
Harlow, Essex
CM18 7NS
United Kingdom

[phone]

[e-mail]

Horizon Technischer
Service

Hamburger Str. 10
25335 Elmshorn
Germany

[phone]

[e-mail]

2

STEp 5

Unscrew and remove the Phillips head screw from the antenna base plate
and the Phillips head screw from the antenna housing. Notice that of the 3

holes in the base plate, the antenna routes through the rectangular hole.

STEp 6

Slide the antenna assembly out of the top of the transmitter.

STEp 7

Reassemble the new antenna assembly and the shaft. Route the coaxial
wire through the shaft until the wire exits the rectangular opening at the

base of the shaft. Align the shaft with the antenna housing until the Phillips

head screw holes line up. Be careful not to pinch the antenna wire when

reinserting the shaft. Then install the Phillips screw on the antenna housing.

STEp 8

Install the antenna assembly in the transmitter. Feed the antenna wire

through the rectangular opening in the metal baseplate. Make sure the

key is in the non-rectangular slot. Use care not to pinch the antenna wire.

Fasten it in place using the Phillips screw in the center hole.

STEp 9

Install the antenna connector on the RF module. Precise alignment is

needed so the two snap together. Carefully align the connector and press
in place until it clicks. Ensure proper connection by a slight “side-to-side”
movement of the antenna wire.

STEp 10

Confirm the installation was done correctly by checking that all wires,
screws and other components are back to their original position with the
new antenna installed. Check to ensure no wires are kinked or will be
pinched when the transmitter is screwed back together. Reassemble the
unit and perform a range check.

Range check procedures:

1. With the model resting on the ground, system powered and model

secured, stand 30 paces (approx. 90 feet) away from the model.

2. Face the model with the transmitter in your normal flying position and
depress and hold the bind button on the back of the transmitter. This
causes reduced power output from the transmitter.

3. You should have total control of the model with the button depressed
at 30 paces (90 feet).

4. If control issues exist, contact the appropraite Horizon Service Center

for further assistance.

Note: If any time during or after the installation you do not feel confident

about the installation, please send it to the appropriate Horizon

Service Center.

WARNING: ENSURE FUTURE ANTENNA SAFETY - Do not attempt to
use the antenna to bear any weight, pick up the transmitter by the antenna
or alter the antenna in any way. If the transmitter antenna or related
components become damaged the output strength can be severely impeded
which will likely lead to a crash, injury, and property damage.

©2010 Horizon Hobby, Inc., 4105 Fieldstone Road, Champaign, IL 61822 USA
Horizon Hobby Limited, Units 1-4 Ployters Rd, Staple Tye, Harlow, Essex, CM18 7NS, United Kingdom
Horizon Hobby GmbH, Hamburger Strasse 10, 25335 Elmshorn, Germany
The Spektrum trademark is used with permission of Bachmann Industries, Inc. Updated 5/10 27877.1