ELECRAFT K2/100 Manual page 17

Install the 0.2" lead spacing capacitors listed below on the top side
of the board. Start with C11, which is along the front edge of the board
near the "KPA100" label.
__ C11, 0.1 µF (104) __ C23, 0.1 µF (104)
__ C68, .01 µF (103) __ C89, .01 µF (103)
__ C26, 33 pF, 50V (Do not confuse with C5F, rated at 500 V or 1 KV)
__ C41, 100 pF (101)
__ C38, .01 µF (103)
__ C37, .01 µF (103)
__ C35, 0.1 µF (104)
__ C42, 0.015 µF (153, 15N)
__ C46, .01 µF (103)
Place relays at locations K1-K12, excluding K3. (K3 will be
installed after the output transformer, T2.) Each relay can only be
installed one way; the white mark on the relay must be oriented as
indicated by the mark on the component outline. Do not solder the
relays yet, and do not clip or bend the relay leads.
Inspect each relay to make sure that it is seated flat against the
board. If not, remove it and flush-trim the leads which are preventing it
from sitting flat against the board.
Make sure that you have not installed relay K3.
Using a hardcover book or other flat object to hold the relays in
place on the top side of the board, flip the board over. Solder two
diagonal corner pins on each relay.
__ C25, .001 µF (102)
__ C39, .01 µF (103)
__ C36, 0.015 µF (153, 15N)
__ C44, .01 µF (103)
__ C43, 0.015 µF (153, 15N)
__ C40, 0.1 µF (104)
Inspect the 11 relays closely to make sure that they're seated flat
against the PC board. If not, re-heat the corner pins one a time while
pressing down on the relay. Once all relays are properly seated, solder the
remaining pins. Do not trim relay leads, which can cause mechanical
stress, reducing the life of the relay.
Install resistor network RP1 near the "KPA100" label at the front
edge of the board. The dotted (pin 1) end of RP1 should be oriented to
the left. (RP1 is symmetrical and can be reversed, but this orientation will
help visually identify the pin 1 end.)
Install trimmer potentiometers R26 and R27 (100 k, "104") near the
speaker cutout. The trimmers will sit a small distance above the PC board
on the pin shoulders. Set the trimmers to their midpoints.
Install trimmer potentiometer R6 (1 k, "102") at the right side of the
board near T1. Set the trimmer fully counter-clockwise.
Install the ceramic trimmer capacitors, C1 and C27. C1 is supplied
in a separate envelope and C27 is loose in the bag.. Orient the flat side of
each trimmer as shown below:
__ Install C1 (white). The location for C1 is at the far left near the small
notch.
__ Install C27 (yellow). The location for C27 is near the microcontroller,
U1 (16F872).
Using a small flat-blade screwdriver, set both trimmers to their
midpoints (screwdriver slot perpendicular to the flat side as shown
above).
17