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| My IR tower and RCX are not communicating. What should I do? |
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Here is a list of things to try if you are having problems downloading to your RCX.
- Try to block the ambient light that might disrupt the IR transmitter beam: close the window coverings, turn off all the overhead lights, and/or cover the RCX and transmitter tower with a dark cloth or a box.
- Insert fresh batteries into the RCX. To avoid losing firmware, replace one battery at a time rather than removing all six batteries and then inserting six new ones.
- Power the RCX with an AC adapter plugged in to wall-unit electricity.
- Try a different USB port and/or transmitter.
- Restart the computer and re-open ROBOLAB.
- If you are using rechargeable batteries, make sure your batteries are appropriate by reading the Knowledgebase question "Can I use rechargeable batteries in my RCX?"
- Try this battery contact test: take off the RCX bottom and gently shake the RCX. If any of the batteries fall out, the batteries are not the correct size, and you need to purchase a different brand of batteries.
- Ensure the IR transmitter green LED light is lit.
- Set the transmitter on Short Range.
- Check the port setting and the cable connections to computer and transmitter.
- Ensure that the RCX communication cones appear on the RCX display screen.
- Ensure that the RCX is on, pointed toward the IR transmitter, and within 4 inches (10 cm) of the transmitter.
KAB
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