DIGITAL CLOCK MODEL CLK036
GEKCO INC.
Rev 1.0
11
fully seated in their holes, solder the rest of the
pins to the foil.
( )
RN1: 10 k
103 resistor pack.
NOTE: When you install the diode, be sure to
orient the diode correctly. Always match the
band on the diode with the band mark on the
circuit board. The circuit will not work properly if
a diode is installed backwards.
( )
D1: 1N5817 schottky diode
When installing the IC socket next, be sure to
align the notch on the socket with the notch on
the PCB silkscreen.
( )
X1: 28 pin DIP socket
Figure 5: Main Board Top View 4
( )
SW1: momentary right angle switch
( )
SW2: momentary right angle switch
( )
SW3: momentary right angle switch
( )
SW4: momentary switch
( )
J2: Connector Header Male 6 pin right
angle mount
( )
J3: Connector Header Male 5 pin right
angle mount
In the next step, solder one pin and re-align the
connector if necessary and then solder the rest
of the pins. The connector needs to be aligned
with the silkscreen outline.
( )
J1: Connector Power 2.1 mm
( )
LS1: Audio Piezo Speaker
( )
Solder the leads to the foil and cut off
the excess lead lengths.
The next step is to install the mating
connectors between the display board (J1) and
the main board (J5).
Open the display board parts kit and get the
following parts:
Quantity 2 of:
M3 x 12 mm nylon standoffs
Quantity 4 of:
M3 x 6 mm nylon screws
The display board
The display board connector
J1: Connector header male 5 pin
The main board connector
J5: Connector Header Female 5 pin
Refer to figure 10 and 11 for the next steps
Mount two M3 x 12 mm nylon standoffs with
two M3 x 6 mm nylon screws on the main
board as shown.
(2) M3x12
mm nylon
standoff
Figure 6: Main board with standoffs
Insert the 5 pin female connector into the main
board at J5.
Identify the long pins on the display board 5 pin
male connector J1 and insert into or mate with
J5 the 5 pin female connector.
Place the display board onto the two M3 x 12
mm nylon standoffs, with the 5 pin male
connector J5 inserted into J1 on the display
board and insert two M3 x 6 mm nylon screws
as shown.
