DD-20(T) • Connect a monitor speaker to OUTPUT B. Connect the open plug to OUTPUT A(MONO). that the unit produces no unusual noise. • Shock-test the unit by dropping it from a height of 10 cm, then confirm that the unit produces no unusual noise. • Connect a monitor speaker to OUTPUT A(MONO). Connect the open plug to OUTPUT B. • Shock-test the unit by dropping it from a height of 10 cm, then confirm that the unit produces no unusual noise. • Rotate F.BACK from the far left (minimum) to far right (maximum) several times, and confirm that there is no scratching or other such noise from the monitor speakers. • Set F.BACK to the far left (minimum).
• Rotate TONE from the far left (minimum) to far right (maximum) several times, and confirm that there is no scratching or other such noise from the monitor speakers. • Set TONE to the far right (maximum). • Rotate E.LEVEL from the far left (minimum) to far right (maximum) several times, and confirm that there is no scratching or other such noise from the monitor speakers. • Set E.LEVEL to the far right (maximum). • Rotate MODE from the “SOS” to “REVERSE” several times, and confirm that there is no scratching or other such noise from the monitor speakers.
• Set MODE to “STANDARD.” • Rotate ENCODER back and forth from left to right several times, and confirm that there is no scratching or other such noise from the monitor speakers. • Set the volumes as follows. E.LEVEL: CENTER F.BACK: CENTER TONE: CENTER MODE: STANDARD DELAY TIME: 300ms • Connect the noise meter to OUTPUT A(MONO). Connect an open plug to OUTPUT B. • Confirm that the measured value with the noise meter (IHF-A) is -93 dBu or less. • Connect the noise meter to OUTPUT B. Connect the open plug to OUTPUT A(MONO). • Confirm that the measured value with the noise meter (IHF-A) is -93 dBu or less. 16.
Battery Operation Check • Insert batteries in the battery box, and plug into INPUT A(MONO). • Confirm that the unit starts in the normal mode. • Confirm that effect sounds are output. 21