8
2.2 - Ceramic Capacitors and Diode
Install the ceramic capacitors and the one remaining diode. Near each IC you'll place a pair of two
ceramic caps, one 100nF and one 100pF. The BAT 85 diode mounts near the bottom of the
board, between the gate output jack and the
potentiometers.
1. Install the three 100 pF capacitors
(code 101)
C3, C6, C9
2. Install the three 100nF / 0.1uF capacitors
(code 104)
C2, C5, C8
3. Install the one BAT85 diode (note the
polarity and match the stripe on the diode
to the stripe on the PCB)
D19
2.3 - ICs / Chips
Install the three through-hole ICs. Note that the
orientation of the large MCP23S17 IC is opposite
from the other two ICs. Match each IC so the
notch at one end matches the notch on the PCB
silkscreen.
1. Install the one MCP23S17 I/O expander IC
U2
2. Install the two 74HC595 shift register ICs
U1, U3
