output;
After the test is OK, rotate the ST SUB knob to "0".
2). AUX SEND Output Test:
a. Rotate the AUX knob in tested ST SUB channel to
"-∞",
the AUX has no output;
b. Rotate the knob to mid "0", the output is 0±2dB (input from channel R is -6±2dB);
c. Rotate the knob to "+10", the output is 10±2dB (input from channel R is 4±2dB);
After the test is OK, rotate the AUX knob to mid "0".
d. Push the AUX LEVEL to
"-∞",
the AUX has no output;
e. Push the AUX LEVEL to "0", the output is 0±2dB (input from sounding channel R is
-6±2dB);
f. Push the AUX LEVEL to "+10", the output is 10±2dB (input from sounding channel R
is 4±2dB);
g. Press all the AFL (green) in AUX, the PHOENS and AUX have the same output;
After the test is OK, push the AUX LEVEL to "0", release the AFL key.
3). PHONES Output Test:
a. Press the PFL key in tested ST SUB channel, the Lens will light up (green), the
PHONES L/R output is 0±2dB; rotate the ST SUB LEVEL potentiometer, the PHOES
L/R output has no variation; release the key, the PHONES has no output (when input
from R only, the PHONES has no output).
After the test is OK, release the PFL key.
4. 2TR IN/OUT Test:
Input from 2TK IN L, R: 0dB signal:
1). Rotate the 2TK IN potentiometer to
"-∞",
the ST OUT and 2TK OUT L/R has no output;
2). Rotate the knob to
"0", the ST OUT and 2TK OUT L/R output is
0±2dB;
3). Rotate the knob to "+10", the ST OUT and 2TK OUT L/R output is 10±2dB;
4). Press the 2TK IN PFL down, the Lens will light up, the PHONES L/R output is 0±2dB;
rotate the 2TK IN potentiometer, it has no variation;
After the test is OK, rotate the 2TK IN knob to
"0",
release the PFL key.
5. ST OUT Output Test:
Input 0dB BAL signal from CH1, push the channel slide potentiometer to
"0":
1). Push the ST OUT LEVEL slide potentiometer to
"-∞",
the ST OUT L/R has no output;
2). Push the ST OUT LEVEL slide potentiometer to
"0",
the ST OUT L/R output is 0±2dB;
3). Push the ST OUT LEVEL slide potentiometer to
"+10",
the ST OUT L/R output is
10±2dB;
After the test is OK, push the ST LEVEL to
"0".
4). Press the 9-band EQ switch down, the indicator will light up (yellow), push the slide
potentiometer of each frequency point to top and bottom in return, the frequency
response specification as for the fig5.
After the test is OK, push all the slide potentiometer to
"0"
and release the press key.
5). Press the PFL key in ST OUT LEVEL slide potentiometer down, the Lens will light up,
