FUTABA 7XC User manual

1M23N34202
INSTRUCTION MANUAL

2
INTRODUCTION
Thank you for purchasing a Futaba FASSTest-2.4GHz* 7XC digital proportional R/C system. This system
is extremely versatile and may be used by beginners and pros alike. In order for you to make the best use
of your system and to y safely, please read this manual carefully. If you have any difculties while using
your system, please consult the manual, our online Frequently Asked Questions (on the web pages refer-
enced below), your hobby dealer.
*FASSTest: Futaba Advanced Spread Spectrum Technology extend system telemetry
Due to unforeseen changes in production procedures, the information contained in this manual is subject
to change without notice.
http://www.rc.futaba.co.jp/english
Application, Export, and Modication
1. This product is only designed for use with radio control models. Use of the product described in this in-
struction manual is limited to radio control models.
2. Exportation precautions:
(a) When this product is exported, it cannot be used where prohibited by the laws governing radio waves
of the destination country.
(b) Use of this product with other than models may be restricted by Export and Trade Control Regulations.
3. Modication, adjustment, and replacement of parts: Futaba is not responsible for unauthorized modi-
cation, adjustment, or replacement of parts on this product.
Declaration of Conformity (for EU)
Hereby, Futaba Corporation declares that the radio equipment type is in compliance with Directive
2014/53/EU.
The full text of the EU declaration of conformity is available at the following internet address:
http://www.rc.futaba.co.jp/english/dl/declarations.html

3
INSTRUCTION MANUAL

4
Table Of Contents
For Your Safety As Well As That Of Others.........................8
Explanation Of Symbols ...............................................................8
Receiver Mode Precautions .........................................................8
Operation Precautions..................................................................9
NiMH/NiCd/LiFe Battery Handling Precautions ........................10
Storage And Disposal Precautions ...........................................10
Other Precautions .......................................................................11
Installation ..........................................................................30
Receiver And Servo Connections .............................................30
Installation Safety Precautions ..................................................31
Before Using ......................................................................12
Features ......................................................................................12
Set Contents ...............................................................................14
Transmitter T7XC .........................................................................15
Nomenclature...........................................................................15
Battery Replacement Method...................................................16
Low Battery Alarm....................................................................16
When Using The Optional Battery............................................17
When Charging The Optional Battery ......................................18
Power & Display Switch............................................................19
Display When Power Switch Is Turned On ...............................20
Forgotten To Power Off Alarm & Auto Power Off......................20
Trim/Dial Lock...........................................................................20
Steering Wheel And Throttle Trigger Operation........................21
Digital Trim Operation...............................................................21
Stick Lever Head Adjustment ...................................................22
Stick Mounting Angle Adjustment.............................................22
Mechanical Throttle Stick Stroke Adjustment...........................23
Stick Tension Adjustment .........................................................23
Neutral Adjuster Operation.......................................................24
Changing to Ratchet Type Throttle Stick ..................................25
Non-telemetry LED (telemetry OFF sign) ..................................27
Handling the antenna and card slot and receiver ....................27
About The Transmitter Antenna................................................27
Receiver Terminology...............................................................28
Receiver Installation.................................................................28
Handling a microSD card (commercial product) ......................29
Initial Set-Up .......................................................................34
Preparations (Transmitter)..........................................................34
RF Output & Rx Type Check ....................................................34

5
Before
Using
Function
Map
Reference
For Your Safety
As Well As
That Of Others
Installation
Initial
Set-Up
Function Map .....................................................................42
Menu Selection ............................................................................42
Display Menu Screen ...............................................................42
Home Button Setting ................................................................43
Value Of Each Function And Changing The Set Value ............44
User Menu ....................................................................................45
Displaying And Editing The User Menu Screen .......................45
Function List.............................................................................46
Function Map ..........................................................................48
Functions ...........................................................................50
Receiver (Telemetry function ON/OFF) ....................................50
Channel Reverse .........................................................................51
Servo operation reversing
Sub Trim .......................................................................................52
Servo center position fine adjustment
End Point......................................................................................53
End point adjustment
Fail-safe/ Battery Fail-safe ..........................................................56
Fail-safe, battery fail-safe function
Acceleration.................................................................................58
Function which adjusts the movement characteristic from the throttle neutral position
Throttle mode (Trigger) ...............................................................60
Throttle Servo Neutral Position/ Neutral Brake
Servo View....................................................................................62
D/R, ATL........................................................................................63
Steering D/R, Throttle ATL Rate
Trim / Dial Select .........................................................................64
Selection of functions operated by digital trim and dial
Switch Select ...............................................................................67
Selection of functions operated by switch
Idle-Up ..........................................................................................70
Idle up at engine start
Channel Limiter ...........................................................................72
Limit the maximum operating amount of servo
Channel Setting ...........................................................................73
Ability to assign steering or throttle to any channel
Condition......................................................................................74
Two kinds of data can be set in one model
Curve (EXP)..................................................................................76
Receiver system Change & How To Link ................................35
Receivers Other Than T-FHSS ................................................37
Response Mode/ SR Check ....................................................48
Throttle Ratio Check ................................................................40
Trims Initial Set-Up ...................................................................40

6
Steering operation curve/ Throttle curve/ Brake curve adjustment.
Steering curve..........................................................................76
Throttle curve (Forward side) ...................................................78
Brake curve .............................................................................81
Speed ...........................................................................................82
Steering/ Throttle servo delay adjustment
Steering speed .........................................................................82
Throttle speed ..........................................................................84
A.B.S.............................................................................................88
Pulse brake
Traction Control...........................................................................93
Function to make traction progress by intermittently moving the throttle
Start ..............................................................................................97
Throttle preset at start function
Engine Cut ...................................................................................99
Engine cut off by switch
Steering Mixing..........................................................................101
Twin servo steering system
Brake Mixing ..............................................................................104
Front and rear independent brake control for 1/5 GP car, etc.
Gyro Mixing................................................................................108
Use to set the Futaba car rate gyro
4WS Mixing ................................................................................111
Special mixing used with Crawler and other 4WS type vehicles
Dual ESC ....................................................................................114
Front ESC and rear ESC
CPS Mixing.................................................................................116
Controls the Futaba CPS-1 channel power switch
Tank Mixing................................................................................118
This function is intended for vehicles such as tanks
Program Mixing (1, 2, 3, 4, 5 ) ...................................................120
Programmable mixes between arbitrary channels
Tilt Mixing...................................................................................123
Outboard engine
Timer...........................................................................................125
Up, Fuel down, lap, or lap navigation timer
Lap List.......................................................................................132
Lap timer data (lap time, average lap time) check
S.BUS Servo...............................................................................133
Special function, Futaba S.BUS/S.BUS2 servo parameter / SR mode setup
MC (ESC) Link............................................................................139
Special function, Futaba ESC (MC960CR, MC851C, MC602C, MC402CR...etc.)
Roll Out Chart ............................................................................148
Gear Ratio Chart........................................................................149
HOME Button Setting................................................................150

7
Before
Using
Function
Map
Reference
For Your Safety
As Well As
That Of Others
Installation
Initial
Set-Up
Reference .........................................................................188
Specifications ............................................................................188
Warning Displays ......................................................................190
Forced initialization...................................................................192
T7XC Screen Protector .............................................................192
Optional Parts............................................................................193
When requesting repair ............................................................193
Telemetry System......................................................................151
Telemetry....................................................................................152
Telemetry :Receiver Battery...................................................153
Telemetry :The Drive Battery Voltage.....................................154
Telemetry :RPM......................................................................155
Telemetry :Temperature .........................................................156
Telemetry :The Drive Battery Electric Current........................157
Telemetry :GPS......................................................................159
Sensor List.................................................................................161
Sensor ........................................................................................163
Sensor Reload .......................................................................164
Sensor Register .....................................................................165
Change Slot ...........................................................................166
Speech guide interval and log data interval setting................167
Telemetry meter display on home screen ..............................167
Telemetry meter display settings............................................168
Model Select ..............................................................................169
Model memory call
Model Copy ................................................................................170
Model memory copy
Model Name ...............................................................................172
Model memory name set/modify
Model Delete (Model saved on microSD card)........................173
Deletes model data saved on the microSD card
Data Reset..................................................................................174
Model memory reset
Display........................................................................................175
Information.................................................................................177
Sound .........................................................................................179
Battery ........................................................................................180
Data And Time............................................................................181
LED Setting ................................................................................182
Calibration..................................................................................183
Software Update ........................................................................185
Receiver Update ........................................................................186

Caution
8
For Your Safety As Well As That Of Others
For Your Safety As Well As That Of Others
Use this product in a safe manner. Please observe the following safety precautions at all times.
Explanation Of Symbols
Please observe the following precautions to ensure safe use of this product at all times.
Meaning of Special Markings:
The parts of this manual indicated by the following marks require special attention from the standpoint
of safety.
For safe use
Receiver battery: Matched to the ratings of the receiver and connected servo (dry cell battery cannot be
used).
In addition, the FSU Fail-safe Unit cannot be used because the system is different. Use the fail-safe func-
tion of the transmitter.
Symbols: : Prohibited : Mandatory
Danger
Procedures which may lead to dangerous conditions and cause death/serious injury if not carried out
properly.
Procedures which may lead to a dangerous condition or cause death or serious injury to the user if not
carried out properly, or procedures where the probability of superficial injury or physical damage is high.
Warning
Procedures where the possibility of serious injury to the user is small, but there is a danger of injury, or
physical damage, if not carried out properly
Caution
Receiver Mode Precautions
T-FHSS SR
T-FHSS
S-FHSS
FASST
SR mode channel: ON
SR mode channel: OFF
- SR mode of Futaba SR compatible servo.
- Normal mode of Futaba SR compatible servo.
- Futaba digital servo.
- Normal mode of Futaba SR compatible servo.
- Futaba digital servo.
- Futaba all servo.
(Normal mode of Futaba SR compatible servo.)
- Normal mode of Futaba SR compatible servo.
- Futaba digital servo.
- Futaba all servo.
(Normal mode of Futaba SR compatible servo.)
- Normal mode of Futaba SR compatible servo.
- Futaba digital servo.
- Futaba all servo.
(Normal mode of Futaba SR compatible servo.)
Digital servo
Analog servo
Digital servo
Analog servo
Digital servo
Analog servo
System
Response / SR mode Usable servos
Be sure to use the correct Futaba receiver and suitable Futaba servo with the T7XC.
Under other conditions, the set will not operate, or the specified performance will not be displayed even if it operates. In addi-
tion, it may cause servo trouble. Futaba will not be responsible for problems caused by the use of other than genuine Futaba
parts. Use the parts specified in the instruction manual and catalog.
WARNING: Always keep electrical components away from small children.

9
For Your Safety As Well As That Of Others
Warning
Do not operate outdoors on rainy days, run through puddles of water or use when visibility is limited.
Should any type of moisture (water or snow) enter any component of the system, erratic operation and loss of control may
occur.
Do not operate in the following places.
-Near other sites where other radio control activity may occur.
-Near people or roads.
-On any pond when passenger boats are present.
-Near high tension power lines or communication broadcasting antennas.
Interference could cause loss of control. Improper installation of your Radio Control System in your model could result in
serious injury.
Do not operate this R/C system when you are tired, not feeling well or under the influence of alco-
hol or drugs.
Your judgment is impaired and could result in a dangerous situation that may cause serious injury to yourself as well as
others.
Do not touch the engine, motor, speed control or any part of the model that will generate heat
while the model is operating or immediately after its use.
These parts may be very hot and can cause serious burns.
Always perform an operating range check prior to use.
Problems with the radio control system as well as improper installation in a model could cause loss of control.
(Simple range test method)
Have a friend hold the model, or clamp it down or place it where the wheels or prop cannot come in contact with any ob-
ject. Walk away and check to see if the servos follow the movement of the controls on the transmitter. Should you notice
any abnormal operation, do not operate the model. Also check to be sure the model memory matches the model in use.
Turning on the power switches.
Always check the throttle stick on the transmitter to be sure it is at the neutral position.
1. Turn on the transmitter power switch.
2. Turn on the receiver or speed control power switch.
Turning off the power switches
Always be sure the engine is not running or the motor is stopped.
1. Turn off the receiver or speed control power switch.
2. Then turn off the transmitter power switch.
If the power switches are turned off in the opposite order, the model may unexpectedly run out of control and cause a very
dangerous situation.
When making adjustments to the model, do so with the engine not running or the motor discon-
nected.
You may unexpectedly lose control and create a dangerous situation.
Before running (cruising), check the fail-safe function.
Check Method; Before starting the engine, check the fail-safe function as follows:
1) Turn on the transmitter and receiver power switches.
2) Wait at least one minute, then turn off the transmitter power switch. (The transmitter automatically transfers the fail-safe
data to the receiver every minute.)
3) Check if the fail-safe function moves the servos to the preset position when reception fails.
The fail-safe function is a safety feature that minimizes set damage by moving the servos to a preset position when
reception fails. However, if set to a dangerous position, it has the opposite effect. When the reverse function was used
to change the operating direction of a servo, the fail-safe function must be reset.
Setting example: Throttle idle or brake position
Operation Precautions

Warning
Caution
10
For Your Safety As Well As That Of Others
(Only when NiMH/NiCd/LiFe batteries are used)
NiMH / NiCd / LiFe Battery Handling Precautions
Never plug the charger into an outlet of other than the indicated voltage.
Plugging the charger into the wrong outlet could result in an explosion or fire.
Never insert or remove the charger while your hands are wet.
You may get an electric shock.
Do not use the T7XC transmitter's battery as the receiver's battery.
Since the transmitter's battery has an overload protection circuit, the output power will be shut down when the high current
load is applied. This may result in runaway or fatal crash.
Always check to be sure your batteries have been charged prior to operating the model.
Should the battery go dead while the model is operating, loss of control will occur and create a very dangerous situation.
To recharge the transmitter battery, use the special charger made for this purpose.
Overcharging could cause the battery to overheat, leak or explode. This may lead to fire, burns, loss of sight and many
other types of injuries.
Do not use commercial AA size NiCd and NiMH batteries.
Quick charging may cause the battery contacts to overheat and damage the battery holder.
When running (cruising), do not use the dry cell battery box at the transmitter.
The accessory dry cell battery box is for performance checks. Do not use it for other than performance checks. The dry cell
batteries will be separated from the battery box contacts by shock and the power may be cut off. There is the danger of colli-
sion if the power is cut while running (cruising). The use of Futaba genuine NiMH or LiFe batteries is strongly recommended.
Do not short circuit the battery terminals.
A short circuit across the battery terminals may cause abnormal heating, fire and burns.
Do not drop the battery or expose it to strong shocks or vibrations.
The battery may short circuit and overheat; electrolyte may leak out and cause burns or chemical damage.
Do not connect the charger when the battery is not connected.
A load will be applied to the circuit and the transmitter may be damaged.
When the model is not being used, always remove or disconnect the battery.
Leaving the battery connected could create a dangerous situation if someone accidentally turns on the receiver power
switch. Loss of control could occur.
Always keep the charger disconnected from the outlet while it is not in use.
Prevent accidents caused by abnormal heat generation etc.
Storage And Disposal Precautions
Warning
Do not leave the radio system or models within the reach of small children.
A small child may accidentally operate the system. This could cause a dangerous situation and injuries. NiCd batteries can
be very dangerous when mishandled and cause chemical damage.

Warning
11
For Your Safety As Well As That Of Others
Do not throw NiMH/NiCd/LiFe batteries into a fire. Do not expose batteries to extreme heat. Also
do not disassemble or modify a battery pack.
Overheating and breakage will cause the electrolyte to leak from the cells and cause skin burns, loss of sight, and other in-
juries.
When the system will not be used for any length of time, store the system with NiMH/NiCd batteries in
a discharged state. Be sure to recharge the batteries prior to the next time the system is used.
If the batteries are repeatedly recharged in a slightly discharged state, the memory effect of the NiMH/NiCd battery may
considerably reduce the capacity . A reduction in operating time will occur even when the batteries are charged for the rec-
ommended time. (After discharge to 1cell E.V.=1V)
When a LiFe battery pack will not be used for a long time, to prevent it from deteriorating we rec-
ommend that it be kept in about the half capacity state instead of fully charged. Also be careful
that the battery does not enter the over-discharged state due to self-discharge.
Periodically (about every 3 months) charge the battery.
<NiMH/NiCd Battery Electrolyte>
The electrolyte in NiCd/NiMH batteries is a strong alkali. Should you get even the smallest amount of the electrolyte in
your eyes, DO NOT RUB. Wash immediately with water, and seek medical attention at once. The electrolyte can cause
blindness. If electrolyte comes in contact with your skin or clothes, wash with water immediately.
Do not store your R/C system in the following places.
- Where it is extremely hot or cold.
- Where the system will be exposed to direct sunlight.
- Where the humidity is high.
- Where vibration is prevalent.
- Where dust is prevalent.
- Where the system would be exposed to steam and condensation.
Storing your R/C system under adverse conditions could cause deformation and numerous problems with operation.
If the system will not be used for a long period of time, remove the batteries from the transmitter
and model and store in a cool, dry place.
If the batteries are left in the transmitter, electrolyte may leak and damage the transmitter. This applies to the model also.
Remove the batteries from it also to prevent damage.
Caution
Do not expose plastic parts to fuel, motor spray, waste oil or exhaust.
The fuel, motor spray, waste oil and exhaust will penetrate and damage the plastic.
Always use only genuine Futaba transmitters, receivers, servos, ESCs (electronic speed controls),
NiMH/NiCd/LiFe batteries and other optional accessories.
Futaba will not be responsible for problems caused by the use of other than genuine Futaba parts. Use the parts specified
in the instruction manual and catalog.
Other Precautions
<NiMH/NiCd/LiFe Battery Recycling>
A used battery is a valuable resource. Insulate the battery terminals and dispose of the battery by taking it to a battery recycling center.

12
Before Using
-Full color touch screen LCD
T7XC has an HVGA 4.3 inch, full-color, backlit LCD touch screen. The screen is transective
which enables both indoor and outdoor visibility.
-T-FHSS SR(Super response) & telemetry T-FHSS
In addition to the T- FHSS telemetry system, we added a T-FHSS SR (Super response) system
that increased processing speed to further improve response. (SR system does not support telem-
etry function)
-Updateable software
Software can be updated by microSD card. Model data can also be saved in a microSD card. In
addition, telemetry log data can be saved.
-Model memory for 40 models
Model names can use up to 15 letters, numbers, and symbols, so that logical names may be used.
A model memory with different setups can be created by using the model copy function.
-NFC communication
It is possible to update the T7XC itself in the future by NFC communication.
-Integral type dial switch
A switch with both dial (DL1) and Switch (SW6) functions.
-Brake mixing for large cars
Brake mixing of the front and rear wheels of 1/5GP and other large cars can be adjusted inde-
pendently.
-Steering mixing
Smooth cornering is possible by the independent left and right steering servo setting.
-4WS mixing for crawlers and other 4WS type
This function can be used with crawlers and other 4-stick steering type vehicles.
-Dual ESCs mixing for crawlers
ESC at the front and rear are controlled independently.
-Gyro mixing
The sensitivity of Futaba car rate gyros can be adjusted from the T7XC.
-Tank mixing
This function is intended for vehicles such as tanks.
-CPS mixing
LED lighting and ashing control using our CPS-1 channel power switch can be matched to
steering and throttle operation by switch only.
Before Using
Features

13
Before Using
-S.BUS servo
This is a special function that allows setting of the parameters of our S.BUS servo whose set-
tings are changed by using PC Link software.
-MC-Link
This is a dedicated function which allows setting of the contents of the Link software which
makes possible Futaba speed controller (ESC), MC960CR, MC950CR, MC850C, MC851C,
MC602C, MC402CR, etc. variable frequency and other data changes by PC at the T7XC.
-Throttle speed
Sudden stick operation on a slippery road surface will only cause the tires to spin and the model
to not accelerate smoothly. By setting the throttle speed function, operation can be performed
smoothly and easily. It also suppresses battery consumption.
-Steering speed
When you sense that the steering servo is too fast, etc., the servo operating speed (direction that
suppresses the maximum speed) can be adjusted.
-Non-telemetry LED
When the telemetry function is OFF to conrm that the telemetry function is not operating.
-Dial select function
This function assigns functions to dials (digital trim, grip dial, knob). The step amount and op-
erating direction can also be adjusted. Trim positioning at each model selection is unnecessary
because all the dials are digital.
-Switch select function
This function assigns functions to 5 switches. The operating direction can also be set.
-Trim/dial lock functions
Lock functions which prohibit setting and operation by transmitter trim, and dials are provided.
-Vibrator built into the T7XC
The vibrator can be operated at racing timer lap navigation, time-up, and low battery, telemetry
alarm. It sets it on each function screen.

14
Before Using
After opening the box,  rst check if the contents conform to the following. The contents de-
pend on the set as shown below.
Set Contents
Transmitter / Receiver T7XC / R334SBS or R334SBS-E
Miscellaneous
Dry battery holder
*Installed in transmitter.
Miniature screwdriver
Receiver plugs x3
Ratchet plate x1
Screen protector x1
Instruction manual
- If any of the set contents are missing, or you have any questions, please contact your
dealer.
Caution
T-FHSS SR
T-FHSS
S-FHSS
FASST
SR mode channel: ON
SR mode channel: OFF
- SR mode of Futaba SR compatible servo.
- Normal mode of Futaba SR compatible servo.
- Futaba digital servo.
-Normal mode of Futaba SR compatible servo.
- Futaba digital servo.
- Futaba all servo.
(Normal mode of Futaba SR compatible servo.)
- Normal mode of Futaba SR compatible servo.
- Futaba digital servo.
- Futaba all servo.
(Normal mode of Futaba SR compatible servo.)
- Normal mode of Futaba SR compatible servo.
- Futaba digital servo.
- Futaba all servo.
(Normal mode of Futaba SR compatible servo.)
Digital servo
Analog servo
Digital servo
Analog servo
Digital servo
Analog servo
-Normal mode of Futaba SR compatible servo.
- SR mode of Futaba SR compatible servo.
SR mode channel: ON
- Normal mode of Futaba SR compatible servo.
- Normal mode of Futaba SR compatible servo.
Digital servo
- SR mode of Futaba SR compatib
- SR mode of Futaba SR compatib
- Nor
- Futaba digital ser
-Nor
- Futaba digital ser
-Nor
- Futaba all ser
- Nor
- Futaba digital ser
- Nor
- Futaba all ser
- Nor
- Futaba digital ser
- Futaba all ser
- Nor
- Normal mode of Futaba SR compatible servo.
- Nor
SR mode channel: OFF
- Futaba all servo.
- Futaba all ser
- Futaba all servo.
- Futaba all ser
- Futaba all servo.
- Futaba all ser
System
Response / SR mode Usable servos
Be sure to use the correct Futaba receiver and suitable Futaba servo with the T7XC.
Under other conditions, the set will not operate, or the specified performance will not be displayed even if it operates. In addi-
tion, it may cause servo trouble.
The R334SBS-E receiver is for electric cars. Please do not use for the engine car.
Receiver battery: Matched to the ratings of the receiver and connected servo (dry cell battery cannot be
used).
In addition, the FSU Fail-safe Unit cannot be used because the system is different. Use the fail-safe func-
tion of the transmitter.
Always use only genuine Futaba transmitters, receivers, servos, ESCs (electronic speed controls),
NiMH/NiCd/LiFe batteries and other optional accessories.
Futaba will not be responsible for problems caused by the use of other than Futaba genuine parts. Use the parts specified in
the instruction manual and catalog.

15
Before Using
*The switches, dial, and trimmers in the  gure are shown in the initial setting position.
*Please be careful not to push the switch too strongly.
Handle
Digital Dial (DL1) / Switch 6
(SW6)
Power Switch
Display Switch
Digital Trim 2 (DT2)
(default throttle trim) Digital Trim1 (DT1)
(default steering trim)
Digital Trim4 (DT4)
(default channel 4)
Steering Stick
Switch 2 (SW2)
Switch 3 (SW3)
Switch 4 (SW4)
Neutral Adjuster
LED
LED
Touch Screen LCD
NFC
Home Button
Hook
Nomenclature
Transmitter T7XC
Mechanical ATL
Adjusting Screw
Throttle Stick
Digital Trim3 (DT3)
(default channel 3)
Digital Trim5 (DT5)
(default dual rate)
Switch 1 (SW1)
Switch 5 (SW5)
Digital Trim6 (DT6)
(default brake rate)
Battery Cover
Earphone Jack
(3.5mm stereo jack plug)
Telemetry data can be listened to with commercial earphones.
Non-telemetry LED
(Lights when the telemetry function is off.)
Antenna
Cover
Communication port / S.BUS port
microSD card slot
Cover
Neutral adjuster mounting screw
Charging Jack

16
Before Using
Battery
cover
Battery Replacement Method
1While pressing the two points on the transmitter’s
battery cover, remove it in the direction of the arrow.
Battery Replacement Method
Load the four batteries in accordance with the polarity markings on the battery holder.
Disposal of the Dry Cell Batteries:
The method to dispose of used dry cell batteries depends on the area
in which you reside. Dispose of the batteries in accordance with the
regulations for your area.
Caution
When running (cruising), do not use the dry cell battery box at the transmitter.
The accessory dry cell battery box is for performance checks. Do not use it for other than performance checks. The dry
cell batteries will be separated from the battery box contacts by shock and the power may be cut off. There is the danger
of collision if the power is cut while running (cruising). The use of Futaba genuine NiMH or LiFe batteries is strongly rec-
ommended.
Low Battery Alarm
If the transmitter battery voltage drops below the usable range, an audible alarm will sound
and "Low battery" will be displayed (For details, see page 190). Since the usable range of
NiMH batteries and LiFe batteries is different, the power supply used must be set by system
setting (page 180). If the battery goes dead while running (cruising), since there is the dan-
ger of collision, immediately recover the vehicle (boat) and stop running (cruising).
Warning
When a low battery alarm is generated, cease operation immediately and retrieve the model.
If the battery goes dead while in operation, you will lose control of the model.
While holding down these two points, remove
the battery cover in the direction of the arrow.
2Load the new AA size batteries. Pay very close at-
tention to the polarity markings and reinsert accord-
ingly.
3Slide the battery cover back onto the case.

17
Before Using
Battery
cover
Caution
When closing the battery cover, be careful that the battery cover does not pinch the battery lead
wires.
Shorting of the battery lead wires may lead to fire and abnormal heating and cause burns or fire disaster.
Battery Replacement Method
1Refer to the previous description and remove
the transmitter battery cover.
When Using The Optional Battery
When using an optional rechargeable battery, replace the battery as described below.
-Always use the optional FT2F1700B , FT2F2100B or HT5F-1800B rechargeable battery.
-The type of power source used must be selected through the system setting (page 180).
-When the transmitter will not be used for a long time, remove the battery.
2After removing the dry cell battery box from the
transmitter, disconnect the connector.
3Insert the connector of the new battery and load
the new battery into the transmitter.
4Finish by installing the battery cover.
While holding down these two points, remove
the battery cover in the direction of the arrow.

Charging jack
9M20A05401
(FUTM1725)
To an AC outlet.
18
Before Using
Warning
With Balance Charger
(Example: When using the
FT2F1700B/2100B
with an optional charger)
1Remove the battery cover.
2Disconnect the battery from the T7XC.
3Balance charging cannot be done through the
transmitter. You must remove the LiFe battery to do
this charge.
Charging A LiFe Battery
(Example: When using the
FT2F1700B/2100B
the special charger)
1Plug the transmitter cord of the special charger into
the charging jack on the rear of the transmitter.
2Plug the charger into an AC outlet.
3Check that the charging LED lights red.
4When charging is completed, the charging LED
lights green. Disconnect the charge plug and dis-
connect the AC plug of the charger.
The charging time when charging the FT2F2100BV2
battery with the optional special charger is approxi-
mately 3 hours.
When the LiFe battery will not be used for a long
time, to prevent it from deteriorating we recommend
that it be kept in about the half capacity state instead
of fully charged. Also be careful that the battery does
not enter the overdischarged state due to self-dis-
charge. Periodically (about every 3 months) charge
the battery. In addition, always remove the battery
from the model and store it in a dry, cool place (15°C
to 25°C).
Over current protection
The transmitter charging circuit is equipped with an
over current protection circuit (1.0A). If the battery
is charged with a quick charger for other than digital
proportional R/C sets, it may not be fully charged.
The charging time when charging the HT5F1800B
battery with the optional special charger is approxi-
mately 15 hours. However, when the battery has not
been used for some time, repeat charging 2 or 3 times
to activate the battery.
Charging A NiMH Battery
(Example: When using the HT5F1800B with the special charger)
1Plug the transmitter cord of the special charger into
the charging jack on the rear of the transmitter.
2Plug the charger into an AC outlet.
3Check that the charging LED lights.
When Charging The Optional Battery
Balance charging connector for LiFe battery charger.
Follow the directions of the optional LiFe chargers in use.
LiFe battery is removed from the transmitter.
Make sure not to peel off the battery film, or make any scratch by a cutter knife or the sharp edges of
metal components.
Make sure not to soak or get the battery wet with water or seawater.
Make sure not to use a deformed or swollen battery.
There is a risk of explosion or fire, which is very dangerous.

Power & Display Switch
19
Before Using
Warning
Caution
Never plug it into an outlet having other than the indicated voltage.
Plugging the charger into the wrong outlet could result in an explosion or fire.
Do not insert and remove the charger when your hands are wet.
It may cause an electric shock.
Always use the special charger or a quick charger for digital proportional R/C sets to charge a digital
proportional R/C set battery.
Overcharging a NiMH battery can result in burns, fire, injuries, or loss of sight due to overheating, breakage, or electrolyte
leakage.
Do not plug the charger to the charging jack, if the battery is not connected to the transmitter.
The transmitter may be damaged.
When the charger is not in use, disconnect it from the AC outlet.
Do this to prevent accidents and to avoid overheating.
Power & Display Switch
The power switch and display switch are push switches.
When the power switch (PWR) is held down, operation starts by
transmitting radio waves. When the display switch (DSP) is held
down, the transmitter side data can be checked and set. When the
power is turned off, if the power switch or display switch is held
down, the power is turned off. If both switches are pressed simul-
taneously, the power is turned off quickly.
OFFDSP PWR
When the power is turned off,
if the power switch or display
switch is held down, the power
is turned off. If both switches
are pressed simultaneously, the
power is turned off quickly.
Radio waves are not
being transmitted.
"Display mode RF off"
is displayed Ra dio waves a re
being transmitted.
When you do not run, turn OFFIt cannot operate. It can operate.

The current system is displayed.
(T-FHSS SR /T-FHSS /S-FHSS /FASST)
When turned on by DSP switch, "Dis-
play" is displayed
T-FHSS /S-FHSS /FASST - Response type
(Digital servo /Analog servo)
T-FHSS SR - SR mode on/off
(SR mode setting channel is a red SR mark.)
*The figure above is partly processed for explanation, so it is different from the actual screen display.
Trim/dial lock display mark
20
Before Using
Display When Power Switch Is Turned On
DT1
DT2
DT3
DT4
DT5
DT6
DL1
Total timer or clock display (H:M)
Battery voltage display
Upper: Steering trim display
Lower: Throttle trim display
Menu button
User menu button
Racing timer
Trim/dial lock display mark
Micro SD card mark
Function names and rate as-
signed to dials are displayed.
Model #, Model name (15 characters)
User name (15 characters)
Telemetry function
Receiver -> Transmitter
The reception strength is shown.
Servo operation of each channel can be
checked.
(S-FHSS system Ch.1 to Ch.7)
Forgotten To Power Off Alarm & Auto Power Off
At T7XC initialization, if steering stick, throttle stick, push switch, edit button, or other opera-
tion is not performed within 10 minutes, an audible alarm will sound and the message "Warn-
ing: Auto power off" will appear
(For details, see page 190.) .
If steering stick, throttle stick, push switch, edit button or other operation is performed, the
alarm is reset. Also turn off the power when the transmitter is not in use. If the alarm is not
reset, the auto power off function will automatically turn off the power after 5 minutes. If you
do not want to use this alarm and the auto power off function, they can be disabled by system
setting (
page 180 ).
Trim/Dial Lock
T7XC setup and operation by digital trim DT1, DT2, DT3, DT4, DT5 and DT6 and dials
DL1 can be prohibited.
Setting
1When the HOME button is pressed for about 1 second at the initial
screen, a confirmation beep is generated and the trim/dial lock display
mark appears on the screen.
Clearing
1Edit button lock and trim/dial lock can be cleared in the initial screen
state by the same method as the setting described above. (The trim/dial
lock display disappears from the screen.)