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Old 05-07-2004, 07:12 PM   #1
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Default Futaba 3PJ Glitch on Electric

I just bought a used Futaba 3PJ with the PCM receiver.

It came with a PCM receiver so I swapped out the Xxtra in my R40 nitro with the PCM. I tested it out and it worked perfectly.

So I decided to put the Xxtra in the Yokomo SD. I installed it, turned on the radio/esc. It glitched like crazy. I didnt have any control of the steering, just a bit of throttle. The connections are all correct.

Anyone know why it's glitching? I felt the RF Module on the radio, and it was warm-hot after that glitching.

Do I need another PCM receiver to work it?
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Old 05-07-2004, 07:22 PM   #2
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Did you turn it to FM(PPM) mode?

From the 3PJS manual page 30


The 3PJ SUPER transmitter output signal format can
be changed to match the type of receiver. Check if the
modulation mode is set to match the receiver used.
When using an FM receiver (e.g., R113F), the modulation
mode must be set to PPM. When using a PCM receiver
(e.g., R113iP), the modulation mode must be set
to PCM. If this setting is incorrect, change it with the
Mode Select (page 93) function.


The 3PJ transmitters are nearly identical on the exterior to the 3PJS.

Download and follow the 3PJ Super manual for use with your older 3PJ radio system:

3PJS manual (2,862K)
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Last edited by Tres; 05-07-2004 at 07:29 PM.
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Old 05-07-2004, 07:59 PM   #3
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I have the manual right now. What is the "function select screen"? I'm assuming that is the main screen? And how do you access it? The manual is telling me to go there to adjust the PPM/PCM modes.
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Old 05-07-2004, 08:58 PM   #4
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How many layers of servo tape did you put under the reciever? Put at least two under there, three would probably be better. Mount it on it's side if you can, not laying flat. Carbon fiber chassis can do that.
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