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Board
Specification
Test Point
Adjustment Point
Input Signal
Mode
Tape
M. EQ.
1. Connect the scope to TP201
2. Input same phase signal to HOT & COLD terminal of CH1.
3. Adjust VR1 so that the CH1 output level is minimum.
4. Repeat an adjustment in the same way about the other Audio
channels.
CMMR = Common Mode Reduction Ratio.
CMTST = Common Mode Test
6.4.7. Input level Adjustment
Board
Specification
Test Point
Adjustment Point
Input Signal
Mode
Tape
M. EQ.
1. Adjust VR2 so that the CH1 level is 0dBu+/-0.2dB.
A_ADDA (F8)
TP201 (CH1), TP202 (CH2),
TP251 (CH3), TP252 (CH4)
VR1 (CH1), VR41 (CH2),
VR101 (CH3), VR141 (CH4)
AUDIO IN(CH1, CH2, CH3,
CH4)
Sinewave (CMTST)
EE
Oscilloscope,
Audio Analyzer / Audio
Precision
A_ADDA(F8)
0dBu+/-0.2dB
AUDIO OUT
(CH1, CH2, CH3, CH4)
VR2 (CH1), VR42 (CH2),
VR102 (CH3), VR142 (CH4)
AUDIO IN(CH1, CH2, CH3,
CH4)
Sinewave (BAL)
EE
Oscilloscope,
Audio Analyzer / Audio
Precision
94
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