Figure 34. Picture Shows Orientation Of U11 With Stripe On Upper End - NORCAL NC2030 Manual

U14 is installed first (TLV2464). Make very, very sure it gets installed such that the stripe on the one
end is on the upper end of the IC. Below is a visual of the installed IC. After tacking down one pin in
one corner, make sure to double check the IC orientation before continuing!

Figure 34. Picture shows orientation of U11 with stripe on upper end.

Now install the following parts in the following order:
U12 - SN74CBTD1G125DVB SOT23-5 (Audio Mute Gate).
D8 - BAT54S (Dual Schottky Diode – Audio limiter)
D9 - MMBD4148
Make sure to double check resistor placement on the board against the figure above. Some pad
orientations can be confusing.
R65 R66 R78 R81 R84 - 1K
R76 - 2.7K
R67 R74 - 10K
R73 - 18K
R68 R69 R70 - 47K
R79 - 75K
R85 - 1M
R75, R80 not used
C106 C109 C110 C111 C112 C118 - 0.1uf
C103 C104 C113 C114 C117 - 22uf Double check polarity!
C95 C98 C107 - 100uf Double check polarity!
Norcal NC2030 v5 12-18-05
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