Added description for setting the jumpers.

doc/manuals/MicroDexed-Build_Manual/MicroDexed-Build_Manual.md

@@ -8,6 +8,8 @@ geometry: a4paper,margin=2cm
 
 ![](../../images/MicroDexed.png)
 
+Version 1.0 (June 2020)
+
 ## Requirements
 
 Making a TeensyMIDIAudio board is not very difficult, but you should consider the following:
@@ -110,6 +112,7 @@ For the assembly of printed circuit boards you should always start with the flat
 * Prepare and insert SD card
 * Connect encoders
 * Connect LCD display
+* Setting jumpers
 * Test and trouble-shooting
 
 <div style="page-break-after: always"></div>
@@ -354,6 +357,18 @@ You need:
 
 <div style="page-break-after: always"></div>
 
+#### Setting jumpers
+
+The jumpers are needed to decide which kind of I2S sound chip you want to use and to enable the I2C pullup resistors. To enable them close JP4 and JP5. Than set JP3 to the down position (as seen in the picture below) and leave JP1 and JP2 open.
+
+You need:
+
+* 3 jumpers
+
+![](images/190.jpg)
+
+<div style="page-break-after: always"></div>
+
 #### Connect LCD display
 
 Connect the LCD to the pin headers on the main PCB. The order is shown in the diagram below.
@@ -407,4 +422,3 @@ First check your MIDI wiring. Are you getting signals? There should be a note or
 Is the volume high enough? Turn the volume encoder (left) so that the display shows you a higher value (maximum 100).
 
 Has the SD card been recognized? You can only hear the sound if the SD card has been recognized correctly. If not, format it again as FAT32 and copy the data or try another SD card.
-