• Master PCB silkscreen

TR909 clone nava

  • Master parts list

TR909 clone Nava

Let's continue with the Master section. First add resistors.Still the same, do not pay attention of resistors type on the picture you certainly have different resistors and electrolytic capacitors. Electrolytic capacitors are polarized, the long leg of the capacitors is the positive. Pay attention to orientation in which you solder electrolytic capacitors. The black part on the silkscreened electrolytic capacitor symbol is negative.

IMPORTANT for the mainboard v1.0l owner: Do not sold D195 and R471. Refer to this topic

nava tr 909 clone master resistors cpas

Add diodes. Diodes are polarized, the black ring must match the symbol silkscreened on the PCB.

nava tr 909 clone master diode

Now, add transistors. Transistors are 2SC2878 Do not mix !

nava tr 909 clone master transistors

Now, check master section power voltages. You must connect J6 to test voltage on master section. GND come from there. Add IC. Do not overheat ICs pins during solder process!

nava TR 909 clone master IC

Finally, add the stereo potentiometer.Then master section is finished, let's go to the finished section.

nava tr 909 clone master pot