REPAIR PROCEDURES / LIMITED WARRANTY
REPAIR PROCEDURES / LIMITED WARRANTY
All products from LRP electronic (hereinafter called “LRP”) are manufactured according to the highest quality
standards. LRP guarantees this product to be free from defects in materials or workmanship for 90 days from
the original date of purchase verified by sales receipt. This limited warranty doesn’t cover defects, which are a
result of normal wear, misuse or improper maintenance. This applies among other things on:
• Cut off original power plug or not using reverse polarity protected plugs
• Receiver wire and/or switch wire damaged
• Mechanical damage of the case
• Humidity/Water inside the speed control
• Mechanical damage of electronical components/PCB
• Soldered on the PCB (except on external solder-tabs)
• Connected speed-control with reversed polarity
With Limited Lifetime Warranty products, the warranty terms on the Limited Lifetime Warranty card do also
apply.
To eliminate all other possibilities or improper handling, first check all other components and the trouble shoo-
ting guide before you send in this product for repair or warranty. Products sent in for repair, that operate perfect
have to be charged with a service fee.
By sending in this product, you assign LRP to repair the product, if it is no war ranty or Limited Lifetime Warrant y
case. The original sales receipt including date of purchase needs to be included. Otherwise, no warranty can be
granted. For quick repair- and return service, add your address and detailed description of the malfunction.
Our limited warranty liability shall be limited to repairing the unit to our original specifications. In no case shall
our liability exceed the original cost of this unit. Because we don’t have control over the installation or use of
this product, we can‘t accept any liability for any damages resulting from using this product. By installing or
operating this product, the user accepts all resulting liability.
The specifications like weight, size and others should be seen as guide values. Due to ongoing technical impro-
vements, which are done in the interest of the product, LRP does not take any responsibility for the accuracy
of these specs.
LRP-DISTRIBUTOR-SERVICE:
• Package your product carefully and include sales receipt and detailed description of malfunction.
• Send parcel to your national LRP distributor.
• Distributor repairs or exchanges the product.
• Shipment back to you usually by COD (cash on delivery), but this is subject to your national LRP distributor‘s
general policy.
TROUBLE-SHOOTING GUIDE
In setup mode, the QR2 stores every step when you press the SET button. All the settings will be stored in the
speed-controls memory even if the speed-control will be disconnected from the battery.
Throttle travel High ATV, EPA maximum
Brake travel Low ATV, EPA, ATL maximum
Throttle exponential EXP, EXPO start with 0
Neutral-/throttle-trim SUB Trim centre
Servo Reverse Gas Reverse any setting, don‘t change after set-up procedure!
TRANSMITTER SETTINGS
Setup the following basic functions on your transmitter (if available):
If your transmitter doesn‘t offer any of above functions, it‘s already in „basic setup“ mode.
• This completes the setup procedure and your QR2 is ready to use.
• If you make a mistake during the setup procedure, don‘t worry: Disconnect the battery for about 10sec and
start again from the first step.
• At the end of each run, disconnect the drive battery and then switch off the transmitter. At the start of each
run, switch on the transmitter first, then connect the drive battery.
FUNCTION STATUS LED
Neutral green/red
Forward Partial Throttle bright green
Forward Full Throttle off
Brake Partial Brake bright red
Brake Full brake off
Reverse Partial Reverse dull to bright red
Reverse Full Reverse off
Overload Protection Active flashes green/red
CHECKING THE FUNCTIONS:
If you run through the following functions with the throttle stick, you can check on the LED‘s that everything
is setup correctly.
• Ensure, that the speed-control is not connected to the drive battery and is switched off.
• Remove motor pinion or ensure that the wheels of the model are free to rotate.
• Switch the transmitter on and set the transmitter throttle stick to neutral.
• Connect the speed-control to the battery and switch the unit on.
• Hold the SET button pressed for at least 3sec using the supplied plastic screwdriver.
• The SET LED flashes green/red and indicates that you entered setup mode.
• Leave the throttle stick at neutral and press the SET button once.
-> Neutral setting is now stored, the LED flashes green and the motor beeps.
• Hold the transmitter stick at full throttle and press the SET button once.
-> The full-throttle setting is now stored, the LED flashes red and the motor stops beeping.
• Hold the transmitter stick at full reverse and press the SET button once.
-> The reverse setting is now stored. The LED is off.
SYMPTOM CAUSE REMEDY
Servo is working, no motor function. Set-Up problem Repeat set-up procedure
Speed-control plugged in incorrectly Plug speed-control in Ch 2
Overload protection activated Allow speed-control to cool down
Wiring problem Check wires and plugs
Motor defective Replace moto
Motor brushes jammed. Check whether brushes are moving freely
Speed-control defective Send in product for repair
No servo and no motor function. Speed-control plugged in incorrectly Plug speed-control in with correct polarity
Crystal defective Replace components one by one.
Receiver defective
Transmitter defective
Speed-control defective Send in product for repair
Motor runs in reverse when accelera-
ting forward on the transmitter.
Throttle stick polarity at transmitter
changed while driving
Repeat set-up procedure
Motor connected incorrectly Connect motor correctly
Insufficient performance.
E.g. poor brake power, reverse
power, topspeed or acceleration..
Motor pinion or gear ratio too long. Use smaller motor pinion
Transmitter settings were changed
after set-up
Repeat set-up procedure
Motor worn out Maintain motor
Motor defective Replace motor
Speed-control defective. Send in product for repair
Speed-control overheats or switches
off frequently.
No heatsink installed Install heatsink
Reduced cooling efficiency Cut cooling holes in body
Motor stronger than motorlimit or
input voltage too high
Use only motors and batteries which
are within the specifications of the
speed-control
Motor pinion or gear ratio too big Use smaller motor pinion
Drive train or bearing problems. Check or replace components.
Model used too often without cool-
down periods
Let speed-control cool down after every
run
Motor never stops, runs at constant
slow speed
Transmitter settings were changed
after set-up
Repeat set-up procedure
Humidity/water in speed-control Immediately unplug and dry speed-control
Speed-control defective Send in product for repair
Radio interference Motor suppressors not sufficient Solder capacitors to motor
Receiver or antenna too close to
power wires, motor, battery or
speed-control.
Receiver aerial too short or coiled up
See „Installation Tips“ and „Installation“
Receiver defective, too sensitive;
transmitter defective, transmitter
output power too low, servo problem
Replace components one by one
Only use original manufacturers crystals
Poor battery connection Check plugs and connecting wires
Transmitter batteries empty Replace / recharge transmitter batteries
Transmitter antenna too short Pull out antenna to full length
RADIO / SPEED-CONTROL SET-UP
RA00123_QR2_E_071207fv.indd 2RA00123_QR2_E_071207fv.indd 2 07.12.2007 10:08:5607.12.2007 10:08:56
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