1. Remove power and antenna.

 2. Open case like explained in your "Operating Manual". 

 3. Locate four screws attaching front panel and remove the top screws, loosen the bottom screws.

 4. Tilt front panel forward.
 
 5. On the left side of the radio remove the plug from power supply to the front panel (gray and white wires).

 6. Locate the jumper position 3 on control board. 

 7. Change the jumper status in position 3.
 
 8. Reassemble radio. 
 
9. Reset CPU (see your Operating Manual).
 
 
 73's de Phil   -   (Source: Ham Radio Modifications - KD4SAI)

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