Replacement Transmitter Antenna Assembly Manual for the DX7 ...

SPM6818Replacement Transmitter Antenna AssemblyManual for the DX7 and DX7sewww.spektrumrc.comNOTICEAll instructions, warranties and other collateral documents are subject tochange at the sole discretion of Horizon Hobby, Inc. For up-to-date productliterature, visit http://www.horizonhobby.com and click on the support tabfor this product.WARNING: READ AND FOLLOW ALL INSTRUCTIONSThis manual contains instructions for safely replacing a transmitterantenna. This replacement antenna is a key component in a sophisticatedhobby product. The instructions require basic technical knowledge andmechanical skill. The replacement should not be attempted by children orbeginner hobbyists.Do not attempt disassembly, use with incompatible components, oraugment the product in any way, outside of these instructions. Failure tofollow each instruction and precaution could result in a break of signaltransmission, which will ultimately lead to damage to the product, propertyand/or personal injury.Read ALL instructions. If after reading these instructions you are notconfident in your ability to replace the antenna and perform a range check,send the antenna and transmitter, free of charge, to the appropriate HorizonService Center where this procedure can be performed by an authorizedservice technician. Or contact a distributor in your country of service.Horizon Service CenterHorizon Hobby LimitedHorizon TechnischerService4105 Fieldstone RoadChampaign, IL 61822USAUnits 1-4 Ployters RdStaple TyeHarlow, EssexCM18 7NSUnited KingdomHamburger Str. 1025335 ElmshornGermany877-504-0233productsupport@horizonhobby.com+44 (0) 1279 641 097sales@horizonhobby.co.uk+49 4121 46199 66service@horizonhobby.deNote: If it is decided to submit the unit for antenna replacement, Horizonwill pay the costs of shipping and labor associated with the replacementof the antenna. However the cost to repair any OTHER damage done to theproduct may be the responsibility of the customer, to be determined at thesole discretion of Horizon Hobby Inc.CAUTION: Never turn the radio on when the antenna is not attached tothe module. Powering up the transmitter without the antenna attached candamage the transmitter.IntroductionThe 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 screwdriverStep 1With the transmitter power switch in the “off” position, open thebattery compartment. Remove the battery pack. Be careful not to damagethe connector.Step 2Using a Phillips screwdriver, remove the 6 screws holding the transmittercase together.1Step 3Carefully remove the back case half. Put it aside. Be careful not to damagethe wires.Step 4Disconnect the antenna wire where it connects to the RF module. Carefullygrasp the wire near the connector and pull straight up while wiggling thewire. It should disconnect easily.

Step 5Unscrew and remove the Phillips head screw from the antenna base plateand the Phillips head screw from the antenna housing. Notice that of the 3holes in the base plate, the antenna routes through the rectangular hole.Step 7Reassemble the new antenna assembly and the shaft. Route the coaxialwire through the shaft until the wire exits the rectangular opening at thebase of the shaft. Align the shaft with the antenna housing until the Phillipshead screw holes line up. Be careful not to pinch the antenna wire whenreinserting the shaft. Then install the Phillips screw on the antenna housing.Step 9Install the antenna connector on the RF module. Precise alignment isneeded so the two snap together. Carefully align the connector and pressin place until it clicks. Ensure proper connection by a slight “side-to-side”movement of the antenna wire.Step 6Slide the antenna assembly out of the top of the transmitter.Step 8Install the antenna assembly in the transmitter. Feed the antenna wirethrough the rectangular opening in the metal baseplate. Make sure thekey 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 10Confirm the installation was done correctly by checking that all wires,screws and other components are back to their original position with thenew antenna installed. Check to ensure no wires are kinked or will bepinched when the transmitter is screwed back together. Reassemble theunit and perform a range check.Range check procedures:1. With the model resting on the ground, system powered and modelsecured, stand 30 paces (approx. 90 feet) away from the model.2. Face the model with the transmitter in your normal flying position anddepress and hold the bind button on the back of the transmitter. Thiscauses reduced power output from the transmitter.3. You should have total control of the model with the button depressedat 30 paces (90 feet).4. If control issues exist, contact the appropraite Horizon Service Centerfor further assistance.Note: If any time during or after the installation you do not feel confidentabout the installation, please send it to the appropriate HorizonService Center.WARNING: ENSURE FUTURE ANTENNA SAFETY - Do not attempt touse the antenna to bear any weight, pick up the transmitter by the antennaor alter the antenna in any way. If the transmitter antenna or relatedcomponents become damaged the output strength can be severely impededwhich will likely lead to a crash, injury, and property damage.2©2010 Horizon Hobby, Inc., 4105 Fieldstone Road, Champaign, IL 61822 USAHorizon Hobby Limited, Units 1-4 Ployters Rd, Staple Tye, Harlow, Essex, CM18 7NS, United KingdomHorizon Hobby GmbH, Hamburger Strasse 10, 25335 Elmshorn, GermanyThe Spektrum trademark is used with permission of Bachmann Industries, Inc. Updated 5/10 27877.1