6
First please check if all parts are complete with help of the partlist.
The markings on the PCB show exactly on which position you should solder the parts.
If you need more information please check the drawing of the PCB.
We always start to solder the lowest parts and end normally this are the resistors. We
advise to cut the component wires directly after soldering so they will be out of the way
when you start soldering other parts.
Before you start to solder we advise to check if the IC’s fit correctly, when necessary
align the IC pins with a flat nose plier or bend them over all together when all pins rest
on the table.
THE POSITION AND POLARITY OF THE IC’S IS MOST IMPORTANT!
• Please study the soldering instructions on the previous page first
• Check all invidual components with the help of the parts checklist.
• Start soldering the resistors and capacitors (passive components)
and solder the diode, transistors and IC‘s (active components) after that.
• Insert the parts on the PCB top (printed side) and solder the component wire
on the bottom to the PCB (Copper side).
4.
Electronic assembly
4.1. Soldering of the parts
PCB
marking
Polarity &
Marking position
Resistor
No polarity.
In professional soldering it is common
use, to have all accurrancy (gold)
rings at the right side.
Position the IC‘s in the
good direction (see
markings!).
FIRST SOLDER
THE IC FEET!
IC
The colored rings show
the resistor value!
□ U1 sound chip
□ U2 LM386
Be sure marking is 100%
OK, this marking can also be
found on the PCB!
Remarks
IC Marking
Partnumber
Switch
No polarity.
□
R1, R2, R3, R4,
R5, R6, R7, R8
330Ω
or, or, bl , gold
□ R9, R12
470Ω
vio, yel, bl, gold
□ R10,R13 1KΩ
brn, bl, rd, gold
□ R14
10Ω
brn, bl, bl, gold
□ R11
3,3KΩ
or, or, rd gold
