4.
Mechanical Parts List
1. 2x screw P13 (3x6mm)
2. 4x screw P14 (3x6mm)
3. 2x hosepipe P18
4. 2x nut P16 (M3)
5. 2x hex post P15 (10mm)
6. 1x body P17
5.
Assembly
5.1
PCB Assembly
Start the assembly by mounting the resistors. The names of all components have been printed on the PCB:
Part ID
R18
R11/12/13/14
R3/4
R1
R5/7/8/9/10
R15
R2/6/16/17
Mount the zener diode, the capacitors, the transistors and the oscillator next:
Q5/6/7/8
Q1/3/4/9/10/11/12
Q13/14/15/16
Mount the IC socket, the battery connector, the slide switch, the buzzer and the pins.
Part ID
IC1
BAT.
SW.
BZ1
M1 (+/-)
M2 (+/-)
V. 03 – 28/08/2019
Description
100
10
1.2K
2.2K
1K
10K
22K
Part ID
ZD1
C2/3
C1
C4
C5
EC1
Q2
XTAL
battery connector (fig.1 #13)
KSR4
Fig. 2
Colour Code
brown/black/brown/gold
brown/black/black/gold
brown/red/red/gold
red/red/red/gold
brown/black/red/gold
brown/black/orange/gold
red/red/orange/gold
Description
Zener diode 3.9V
ceramic capacitor 30
ceramic capacitor 103
ceramic capacitor 104
ceramic capacitor 224
electrolytic capacitor 100uf
transistor 8550
transistor 9013
transistor 8050
transistor C945
oscillator 4MHz
Description
IC socket (fig.1 #12)
slide switch (fig.1 #17)
buzzer (fig.1 #6)
pins (fig.1 #16)
5
Quantity
1
4
2
1
5
1
4
Quant.
1
2
1
1
1
1
4
1
7
4
1
Quant.
1
1
1
1
4
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