1.  Disconnect the power and antenne.
  2.  Remove the top and the bottom cover.
  3.  Remove all knobs from the front panel.
  4.  Remove the nut from the mic jack and the nut from the channel switch.
  5.  Remove four screws holding the front panel.
  6.  Remove the three screws from the control board.
  7.  Locate the green jumper wire sticking out of the front panel, behind the VFO button.
  8.  Cut the green wire and tape the edges to prevent them from shorting.
  9.  Install Diode 209 on Control board part # 1N914. The control board X57-3310-11.
10.  Reassemble thr radio.
11.  Reset the microprocessor (Press and hold [MR] while turn the power on.

      Alignment Controls:
      VR-3  TX HI power
      VR-4  TX MID power
      VR-5  S-Meter
      TC-3  FREQ. ADJ.

(Source: KB2LJJ) 

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