Intially check the voltages on the main board with multimeter at a suitable DC voltage range. Connect the negative wire to the GND jumper located on  the main board.

1. Measure the supply voltage at capacitor C65. Nominal 13.8 V. Allowable variation 12 V...15 V.
2. Measure the nominal 5 V regulator voltage at capacitor C63. Allowable variation 4.8 V...5.2 V.
3. Measure the nominal 10 V regulator voltage at capacitor C64. Allowable variation 9.5 V...10.5 V.

There are three adjustable trimmer resistors on the main board.

AGC threshold (trimmer R53 marked AGC on the board)

This adjustment sets the RX AGC operating point and the S-meter reading.
Intially listen the RX noise without an antenna and turn the trimmer to the point where the noise begins to attenuate. Fine adjustment is done by feeding a RF signal at S9 level  (50 uVrms or -73 dBm) to the antenna connector with a RF signal generator. Listen to the carrier at approx 1 kHz pitch and turn the AGC trimmer so that the graphical S-meter reading in LCD indicates S9 (two dots in the middle of the S-meter bar). If a signal generator is not available the fine adjustment can be done by listening a suitable signal on a band and comparing the S-meter reading to another RX.

Graphical S-meter reading S9

Note 1. The PA board bias currents must be adjusted before these adjustment
Note 2. Connect a 50 ohm dummy load to the antenna connector
Note 3. The simple dummy load made by the resistors included in the kit can stand 10 W only 1 minute

This adjustment sets the CW ouput power
1. Select Tune mode by pushing the MODE button
2. Select power output display (PWR--.-W) by pushing the DISPLAY button
3. Press the mic PTT to transmit carrier
4. Turn the CAR trimmer until the RF output power reading indicates 10 W ± 1 W

This adjustment sets the SSB ouput power
1. Select LSB or USB mode by pushing the MODE button
2. Select power output display (PWR--.-W) by pushing the DISPLAY button
3. Press the mic PTT and vocalize aaaaaa... at a distance of 1 inch from the microphone
4. Turn the SSB trimmer until the RF output power reading indicates 10 W ±1 W

Power output reading 10 watts