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18
REFERENCE
Troubleshooting
If your digital proportional R/C set does not operate, its range is short, it intermit-
tently stops operating, or it operates erroneously, take the action shown in the table
below. If this does not correct the trouble, please contact a Futaba dealer.
Check point Check item Action
Transmitter/receiver
battery
Dead battery.
Incorrect loading.
Faulty contact con-
nection.
Dirty contacts.
Replace the battery. Charge the nicd
battery.
Reload the batteries in the correct
polarity.
If the contact spring is deformed,
correct it.
Wipe with a dry cloth.
Transmitter antenna Loose.
Not extended to full
length.
Screw in.
Extend fully.
Crystal Disconnected.
Wrong band.
Different from specifi-
cation.
Push in.
Match transmitter/receiver band.
Replace with specified crystal.
Connector connection Incorrect wiring.
Disconnection.
Reinsert.
Push in.
Receiver antenna Close to other wiring.
Not cut?
Not bundled?
Separate from other wiring.
Request repair.
Install in accordance with instruction
manual.
Servo linkage Binding or looseness Adjust at the fuselage side.
Motor (electric motor
plane)
Noise countermea-
sures.
Install a noise absorbing capacitor.
75 MHz Band: (car/boat only)
75.410 61 75.610 71 75.810 81
75.430 62 75.630 72 75.830 82
75.450 63 75.650 73 75.850 83
75.470 64 75.670 74 75.870 84
75.490 65 75.690 75 75.890 85
75.510 66 75.710 76 75.910 86
75.530 67 75.730 77 75.930 87
75.550 68 75.750 78 75.950 88
75.570 69 75.770 79 75.970 89
75.590 70 75.790 80 75.990 90
50 MHz Band: (Aircraft/car/boat -Fcc
Amateur license required)
50.800 00 50.900 05
50.820 01 50.920 06
50.840 02 50.940 07
50.860 03 50.960 08
50.880 04 50.980 09
72 MHz Band: (Aircraft only)
72.010 11 72.210 21 72.410 31 72.610 41 72.810 51
72.030 12 72.230 22 72.430 32 72.630 42 72.830 52
72.050 13 72.250 23 72.450 33 72.650 43 72.850 53
72.070 14 72.270 24 72.470 34 72.670 44 72.870 54
72.090 15 72.290 25 72.490 35 72.690 45 72.890 55
72.110 16 72.310 26 72.510 36 72.710 46 72.910 56
72.130 17 72.330 27 72.530 37 72.730 47 72.930 57
72.150 18 72.350 28 72.550 38 72.750 48 72.950 58
72.170 19 72.370 29 72.570 39 72.770 49 72.970 59
72.190 20 72.390 30 72.590 40 72.790 50 72.990 60
Frequencies (for U.S.A.)
The following frequencies and channel numbers may
be used for aircraft and surface in the United States:
19


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