Sub culture wrote:My R-4P (or R-6N) receiver is not working, how do I figure out what's wrong?
Pay special attention to number three. Some transmitters enable you to switch between negative and positive shift (for instance my Sanwa RD6000 allows this). I'm not sure about your Futaba set
1. First, test the R-4P/R-6N without using the ESC. This is done by connecting a 4.8V battering directly on port 4 (or 6) of the receiver. Make sure when you connect the battery that you observe the proper polarity of the pins. If you connect this incorrectly, the R-4P/R-6N will not work.
2. Once the battery is connected to port 4 (or 6), put a servo into ports 1, 2, and 3. Turn on your transmitter and test the sticks to determine which port is elevator, rudder, and throttle. Different transmitter manufacturers use different ports for different functions.
3. If your R-4P/R-6N still does not work after step 2, you may not be using the correct type of transmitter. You must have a FM (PPM) type transmitter. An AM or PCM type transmitter will not work. Also, you must also have the correct "transmitter shift". A negative shift R-4P/R-6N will have an F on top of its plastic case. A positive shift R-4P/R-6N will have an J on top of its plastic case. Futaba/Hitec transmitters have negative shift. JR/Airtronics have positive shift.
4. If your R-4P/R-6N still does not work after step 2, then you may have a bad or cracked UM1 crystal. Replace the crystal and repeat step 2. If after repeating step 2 and your R-4P/R-6N still does not work then you have a bad receiver.
5. Now that you have determined which ports are used for elevator, rudder, and throttle, you can install the ESC. If the R-4P/R-6N does not work, then your ESC is bad or burnt out.
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