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Get the USB adapter, your USB cable and power the board. Now that no IC is onboard and there is no
real risk, we will check all the voltages .
Open the Multimeter to the DC measurement setting.
Connect the black test lead to the GND pin and the red test lead to:

+12v (should be around 11,8 to 12,4 volts)

+5v (+/- 0,1 volts)

+2,5V (+/- 0,02 volts)

-12v (should be around -11,8 to -12,4 volts)

+5v (top side, +/- 0,1 volts)

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Содержание DYSMETRIA

Страница 1: ...will use 1 2 Bill of Materials 2 Soldering the Components STEP 1 Resistors STEP 2 Diodes STEP 3 IC sockets Headers and Power Board STEP 4 Capacitors and Remaining Components STEP 5 The Control Board...

Страница 2: ...g skills and that you can identify the electronic components If it is your first time soldering there are several tutorials on youtube that can help you It would be easier and helpful for you to work...

Страница 3: ...1 2 Bill of Materials or What s in the box BAG 1 BAG 2 POWER BOARD BAG 3 PANEL CONTROL PCB VOICING PCB...

Страница 4: ...k9 resistor BAG 1 4 10 100k resistor BAG 1 4 2 270k resistor BAG 1 4 5 470k resistor BAG 1 4 1 Miniature slide switch BAG 1 5 1 USB type B jack BAG 1 5 1 ATMEGA328 MCU BAG 2 1 6N137 optocoupler BAG 2...

Страница 5: ...m and note their value on their tape as shown on the photos Remember that resistors have a 1 to 5 tolerance so for example a 10k resistor might be measured from about 9 500 ohm to 10 500 ohm The maxim...

Страница 6: ...d components Remove parts that are about to be soldered from their tape Prepare all the components that need to be bend before soldering With the cutter cut carefully all the excess leads Bend these a...

Страница 7: ...1k Resistors Let s start Find and solder the 1k resistors 2k7 Resistors Find and solder the 2k7 resistors...

Страница 8: ...10k Resistors Find and solder the 10k resistors...

Страница 9: ...18k Resistors Find and solder the 18k resistors...

Страница 10: ...22k Resistors Find and solder the 22k resistors...

Страница 11: ...30k Resistors Find and solder the 30k resistors 49k9 Resistors Find and solder the 49k9 resistors...

Страница 12: ...100k Resistors Find and solder the 100k resistors 270k Resistors Find and solder the 270k resistors...

Страница 13: ...470k Resistors Find and solder the 470k resistors...

Страница 14: ...220 Ohm Resistors Find and solder the 220 Ohm resistors...

Страница 15: ...should have the items shown in the picture Max temperature of the soldering iron for this step should be 320 C We usually prefer to have it set at about 290 C just to be on the safe side The single di...

Страница 16: ...Now locate and solder the 3v6 zener diodes They are marked with a 3 on their tape Now locate and solder the 5v1 zener diodes They are on the leftover unmarked tape of 4pcs...

Страница 17: ...xt come the 1N4007 diodes Those serve as reverse power protection for the power supply On the top side of the voicing PCB you will place the crystal This serves as a clock for the MCU Solder it as sho...

Страница 18: ...he 5V regulators They are fed with 12V and convert this to 5V There are two of them as you always want to have separate rails for the digital and the analog path Solder them as shown Get the 100k Trim...

Страница 19: ...Finally solder the rest of the trimmers marked as 1k You should have the following parts as leftovers from this step 2x 2n3904 and the TL431 Put them to the side as we will solder them later on...

Страница 20: ...back to the bag Max temperature of the soldering iron for this step should be 350 C Solder the IC sockets as shown Things you should be careful about 1 The socket orientation 2 Make sure the sockets a...

Страница 21: ...Open the Bag 1 5 For this step we will only need the above parts Put the rest to the side as we will need them later on Solder them as shown...

Страница 22: ...ax temperature of the soldering iron for this step should be 350 C Separate them per value Here is what the codes on the ceramic caps mean 220 22p 221 220p 102 1n 1000p 103 10n 0 01u 104 100n 0 1n 474...

Страница 23: ...Then place all the 100n capacitors indicated as 104 Now find all the 220p capacitors indicated as 221...

Страница 24: ...capacitors There are 2 ways to identify where the is a There is a thick line on the body showing where the minus side is b If one lead is much bigger than the other then this is the side Also place o...

Страница 25: ...Solder the two transistors indicated as 2n3904 and the voltage reference TL431 Finally find the remaining parts shown below...

Страница 26: ...combined will create a single 50pin header Yes we could had bought a single continuous one but the lead time to get them was over 6 months P Solder these carefully as shown and make sure they are firm...

Страница 27: ...bon header should be placed on the bottom side Things to consider a Make sure you have the leads of the components near the ribbon pad cut clean b Make sure you place it correctly as there is a certai...

Страница 28: ...The Voice board is now soldered Well done...

Страница 29: ...STEP 5 The Control Board bag 3 Bag 3 by majority contains parts for the control board Max temperature here should be 350 C Open the bag 3 1 which contains the mini jacks and solder them as shown...

Страница 30: ...button as it s shorter not longer than the other lead Additionally the guide on the top should match the small hole on the PCB Also the longer middle lead should match the cycle pad Once you are sure...

Страница 31: ...rate the ON ON from the ON OFF ON The ON OFF ON switches have a middle position while the ON ON have only two positions Then solder the switches and add the two 10KB rotary pots and the rotary switch...

Страница 32: ...e 11mm ones The 15mm spacers are used as standoffs for the unit to rest to First thing to assemble is the spacers on the control board You will need the 10mm plastic ones they have both sides threaded...

Страница 33: ...Next get 2x bolts 2x washers and 2x 10mm metal spacers With these we will create the stand for the power board Then attach the power board as shown below...

Страница 34: ...no real risk we will check all the voltages Open the Multimeter to the DC measurement setting Connect the black test lead to the GND pin and the red test lead to 12v should be around 11 8 to 12 4 vol...

Страница 35: ...t the remaining parts from bag 2 and place the ICs into place WARNING They have a specific orientation Actually on the voicing board all chips are placed with the same orientation so that the construc...

Страница 36: ...Attach the 50pin female header on top of the male one...

Страница 37: ...Get a 15mm plastic header and the M3 nut and place them as shown...

Страница 38: ...Now connect the two boards Bolt the rest of the 15mm plastic spacers the bottom side as shown...

Страница 39: ...rn the module straight up to its feet and solder the 50 pin header that is now visible and into place Get the two potentiometer washers and place them as shown Then place the panel on the finished boa...

Страница 40: ...ttach the bolts and set them Also screw down the potentiometers s nuts but without the use of a tool Do it as hard as your hand allows you too Place the knobs into place by using the small screwdriver...

Страница 41: ...idi cable 4 5 black screws These are needed in case you are going to attach it in a modular case A ribbon cable for the same reason A few resistors and one capacitor the resistors are just extras if t...

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