Parts Layout Diagram; Kit Assembly; Parts List - Ramsey Electronics LABC1 Instruction Manual

LABC1 BATTERY CHARGER KIT ASSEMBLY
Although we know that you are anxious to complete the assembly of your
battery charger kit it is best to follow the step-by-step instructions. Try to avoid
the urge to jump ahead installing components.
Since you may appreciate some warm-up soldering practice as well as a
chance to put some landmarks on the PC board, we'll first install a couple of
the larger components. This will also help us to get acquainted with the up-
down, left-right orientation of the circuit board. Remember that the
components will be mounted on the component side of the circuit board and
soldered on the solder side of the circuit board, the side that contains the
printed circuit traces. Have a look at the parts layout diagram to help with your
assembly.
Use the boxes to check off your progress.
Check all received parts against the parts list. The parts list describes the
various markings that may be found on the kit parts. Carefully sort the parts
into small piles, (an empty egg tray does nicely for this purpose) to aid in
finding the correct part at the required time.
1. Install DPDT PC mount pushbutton switch, S1. Be sure it is seated
properly before soldering all 6 pins.
2. Install J1, the 2.1mm power jack.
We'll begin to install some of the polarity sensitive parts at this point. Use the
parts layout diagram in addition to the PC board silkscreen to orient the
diodes, electrolytic capacitors, transistors and ICs properly.
3. Install D1, 1N4002 diode (black with white band). You'll see a black
band on the PC board silkscreen. Line up the white band on the diode
with this black band. This is the cathode side of the diode.
4. Install D2, D3 and D4, 1N4002 diodes (black with white band) in the
same manner as you did D1 above. Carefully orient the banded end
before soldering these diodes.
Cathode
LABC1 • 12
Anode