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NAD S400
2)
Tune the S400 to 108.500 MHz (90.500 MHz for Japan). Looking at the S400 from the front, measure
with a DMM at the right hand side of R21 found at position "R6" on the board. Adjust L13 until the
tuning voltage is 10.0V DC.
3)
Tune the S400 to 98,000 MHz (83.00 MHz for Japan). Measure with an oscilloscope, the IF-signal
10.7 MHz at the common point between CF3 and CF4 found at position "O4" (see Figure 1). This
point will be "DC voltage free". Leave the oscilloscope set to this point until told to remove it.
In the order listed below:
•
Adjust L10 until the IF-signal for maximum setting.
•
Adjust L7 until the IF-signal for maximum setting.
•
Adjust L1 until the IF-signal for maximum setting.
•
Readjust L10, L7 and L1 until there is no more improvement for the maximum settings.
Unsolder Clip
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CF4
IF Measurement Point
Figure 1
L1
L12
VR1
L13
Figure 2
CF2
CF3
L2
L7
L10
IC1
R21
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