the PHONES L/R output is 0±2dB, and it has no PHONES output effect when push the
slide potentiometer.
After the test is OK, release the PFL key.
6). Press the AFL in ST OUT LEVEL slide potentiometer down, the Lens will light up, the
PHONES L/R output is 0±2dB; push the slide potentiometer to bottom, the PHONES
has no output; push the slide potentiometer to top, the PHONES output is 10±2dB.
After the test is OK, release the PFL, and push the ST OUT LEVEL to
"0".
6. ST SUB OUT Output Test:
1). Rotate the ST SUB OUT knob to
"-∞",
the ST SUB OUT L/R has no output;
2). Rotate the knob to
"0", the ST SUB OUT L/R output is
0±2dB;
3). Rotate the knob to
"+10",
the ST SUB OUT L/R output is 10±2dB;
After the test is OK, rotate the ST SUB OUT knob to
"0".
7. MONO OUT Test:
1). Push the MONO OUT LEVEL slide potentiometer to "-
∞
", the MONO OUT has no
output;
2). Push the slide potentiometer to "0", the MONO OUT output is 0±2dB;
3). Push the slide potentiometer to "+10", the MONO OUT output is 10±2dB;
After the test is OK, push the MONO LEVEL slide potentiometer to "0";
4). Turn the "LPF" on board to "ON", scan the output frequency response, and then turn
the LPF potentiometer to maximum in clockwise, scan the output frequency response,
please see the attachment figure6;
After the test is Ok, turn the "LPF" switch to "OFF";
5). Press the AFL on MONO OUT slide potentiometer down, the Lens will light up (green),
the PHONES L/R output is 0±2dB; turn the slide potentiometer to minimum, the
PHONES has no output; turn the slide potentiometer to maximum, the PHONES output
is 10±2dB;
After the test is OK, release the AFL and turn the slide potentiometer to "0";
8. DSP Test:
Press the DFX MUTE key to make the DSP PEAK indicator gradually decreased:
1). Turn the EFFECT RTN slide potentiometer, AUX1-AUX4 rotate potentiometer of CH1,
and AUX1-AUX3 of DSP CH1 to "0"; observe the ST OUT, the AUX1-AUX3 has the
same output signal waveform, rotate the PRESETS potentiometer to make it dial at
"1-16", each rotate, the indicator will flash and the relay will drive one time, the
variation of the output signal waveform coincide with the sample;
2). Rotate the VARIATIONS potentiometer to point at the "1~16", each rotate will make the
indicator flashing and the relay driving for one time, the variation of output signal
waveform coincide with the sample.
3). Put the EFFECT RTN slide potentiometer on channel DSP and rotate potentiometer to
"-
∞
", "0", "+10", observe each output signal waveform coincide with the sample.
After the test is OK, rotate the PRESETS, VARIATIONS to midpoint "1", push the
