Elecraft KDSP2 Manual - Manual (Page 7)

7
R16 2.2K ohm ¼ watt 5% carbon film resistor (red-red-red-gold)
R13 220 ohm ¼ watt 5% carbon film resistor (red-red-brown-gold)
R14 1M ohm ¼ watt 5% carbon film resistor (brown-black-green-gold)
R17 470 ohm ¼ watt 5% carbon film resistor (yellow-violet-brown-gold)
R18 470 ohm ¼ watt 5% carbon film resistor (yellow-violet-brown-gold)
R19 10K ohm ¼ watt 5% carbon film resistor (brown-black-orange-gold)
You should have no ¼ watt carbon film resistors remaining.
Diodes are polarized parts. Each has a band at one end, indicating the cathode. Be sure to orient each part
correctly when you install it. The banded end (cathode) should go to the square pad. The band is also
marked on the silkscreen.
The 1N5711 (or SD101A) and 1N4148 parts look identical. The only way to tell them apart is by reading
the tiny markings on them. They are quite different in their characteristics, however, so it is very important
that you install the correct ones.
Locate the two 1N4148 diodes.
Near the lower left hand corner of the PCB:
D5 1N4148
D6 1N4148
Next, install the 1N5711 diodes. Near the upper center of the PCB:
D2 1N5711 or SD101A
D3 1N5711 or SD101A
D1 1N5711 or SD101A
D4 1N5711 or SD101A
You should have no diodes remaining.
Now it gets interesting! U2 is a TO-220 cased +5-volt regulator. This part may get a little warm, so it will
share some of its heat with the rest of the K2 via a metal spacer as well as the PCB.