SERVICE MANUAL - Nexo

NXAMP4x44-15. ANALOG testPress the [B] button to enter the analog test mode. Thefollowing display appears.Perform the test according to the “Inspection with analogtest mode”. (See page 79–81)Press the [B] button. The following display appears.If OK, press the [B] button to return the display to thetest menu screen.4-16. BRIDGE testPress the [B] button to enter the bridge test mode. Thefollowing display appears.Perform the test according to the “Inspection withBRIDGE mode”. (See page 82)If OK, press the [B] button to return the display to thetest menu screen.4-17. CALIBRATIONPress the [B] button to start the calibration. The followingdisplay appears.Input the 1 kHz, +10 dBu sine wave to the channel 1 inputterminal, and press the [B] button. The analog inputlevel is automatically calibrated, and the following displayappears.Input the 1 kHz, +10 dBu sine wave to the channel 2 inputterminal, and press the [B] button. The analog inputlevel is automatically calibrated, and the following displayappears.Input the 1 kHz, +10 dBu sine wave to the channel 3 inputterminal, and press the [B] button. The analog inputlevel is automatically calibrated, and the following displayappears.Input the 1 kHz, +10 dBu sine wave to the channel 4 inputterminal, and press the [B] button. The analog inputlevel is automatically calibrated, and the following displayappears.Input the 1 kHz, +10 dBu sine wave to the channel 1 inputterminal.Adjust the ENCODER so that the output voltage obtainedat the channel 1 output terminal is +38.1 dBu,and press the [B] button.The analog output level is automatically calibrated, andthe following display appears.Input the 1 kHz, +10 dBu sine wave to the channel 2 inputterminal.Adjust the ENCODER so that the output voltage obtainedat the channel 2 output terminal is +38.1 dBu,and press the [B] button.The analog output level is automatically calibrated, andthe following display appears.Input the 1 kHz, +10 dBu sine wave to the channel 3 inputterminal.Adjust the ENCODER so that the output voltage obtainedat the channel 3 output terminal is +38.1 dBu,and press the [B] button.The analog output level is automatically calibrated, andthe following display appears.69