Figure 27. Close Up Of First Two 3V Ldo Regulators; Figure 28. Parts Layout Of First Two 2.9V Ldo Regulators. Note The Black Band Orientation Of The - NORCAL NC2030 Manual

Figure 27. Close up of first two 3v LDO regulators

Figure 28. Parts layout of first two 2.9v LDO regulators. Note the black band orientation of the electrolytic caps.
Install U2 and U3, part number LP2985-2.9 (marked LAXB), which are 2.9v low dropout (LDO)
voltage regulators. ICs can be difficult to tell if all the pins are properly soldered down. Refer to the
earlier hints on installing ICs.
Install C9, and C10, 0.01uf capacitors.
Install C11 and C12, 2.2uF capacitors.
Install C2 and C3, 22uF 16V polarized capacitors. These are polarized capacitors, so make sure they
are installed with the correct polarization. The black stripe on the top of the cap matches with the
stripe on the outline on the board. Electrolytic caps can be a bit difficult to install. Pre-tin both pads.
Then place the cap on the pads and heat the cap leads until the solder melts. When both pins are
soldered, gently rock the cap to make sure it is completely soldered down.
Norcal NC2030 v5 12-18-05
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