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4. Assembly
a) 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:
Part ID
ZD1
C2/3
C1
C4
C5
EC1
Q5/6/7/8
Q2
Q1/3/4/9/10/11/12
Q13/14/15/16
XTAL
Mount the IC socket, the battery connector, the slide switch, the buzzer and the pins.
Part ID
IC1
BAT.
SW.
BZ1
M1 (+/-)
M2 (+/-)
Mount the LED, the IR LEDs and the IC:
Part ID
LED1
LED2/3/4
REMARK:
IC1
KSR4
Description
brown/black/brown/gold
100Ω
brown/black/black/gold
10Ω
brown/blue/black/gold
16Ω
orange/white/black/gold
39Ω
1K
brown/black/red/gold
10K
brown/black/orange/gold
22K
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)
battery connector (fig.1 #13)
slide switch (fig.1 #17)
buzzer (fig.1 #6)
pins (fig.1 #16)
Description
LED 5mm (red)
IR LED 5mm (clear) + LED holder
2
Colour Code
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
Fig. 3
Quantity
1
3 + 3
1
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