Frequency Central Bartos Flur Rev(2) Manual

Frequency central
Build documentation for:
Bartos flur rev(2)
Main PCB: Panel PCB:
Bill of Materials
1K x 21
56K x 1
91K x 1
100K x 6
200K x 1
270K x 2
470K x 1
100nF poly box x 1
10uF electrolytic x 2
100uF electrolytic x 2
Bartos Flur PIC x 1
TL084 x 1
1n4148 x 1
78L05 x 1
78L09 x 1
3mm red LED x 8
B100K x 2
All pots are 9mm
Alpha
DPDT Toggle on/on x 1
Power header
Male header strip
Female header strip
Kobiconn sockets x 11

Main PCB
Populate the Main PCB as shown on the silkscreen, starting with the lowest profile
components, so:
Resistors
IC sockets
Non-electrolytic capacitors, voltage regulators
Power header and expansion header
Electrolytic capacitors - there’s an error on the silkscreen, the electrolytic polarities
are obscured, see photo:
Finally, cut 2 male header strips to the correct lengths (16, 16) and solder to the PCB so that
the long legs stick out of the rear of the PCB.

Panel PCB
Populate the Panel PCB as shown on the silkscreen in this order:
Resistors
Potentiometers (bend back the mounting lugs, then solder the middle lug in place.
Reflow and adjust as necessary so that they lie correctly. Solder lugs 1, 3 and the
mounting lugs)
Switch. You may want to use the panel to check that the switch is absolutely flush.
Now, place the 11 sockets onto the PCB with their ground lugs pointing towards where the
LEDs will eventually go. Don’t solder them in place yet! Assemble the panel to the panel
PCB, put on the pots washers and tighten up the nuts. Now set the sockets to the panel
using the nuts, making sure they all sit right. Place the assembly face down and solder the
sockets in place. This process should allow a small space to be created between the rear of
the sockets’ bodies and the PCB, allowing jacks to go in balls-deep (!). Everything should line
up nicely now!
Take the whole thing apart, ie remove the nuts/washers and take the panel away from the
panel PCB. Now solder solid core (cut off resistor legs) between the sockets’ ground tabs
and the adjacent ground pads on the PCB (shown as red dots on the image above). There is
one ground pad per sockets.
Cut 2 female header strips to the correct lengths (16, 16) and solder to the PCB so that the
black parts stick out of the rear of the PCB.

Push the 8 LEDs through their holes, remembering that the long legs go through the holes
marked ‘+’. Don’t solder them in place yet! Mount the panel PCB onto the panel, tighten up
all the nuts –it’s worth checking that the LEDs will fit smoothly through the holes before
doing this, as some can be a little tight –if needed a scalpel can be used to shave the holes
slightly wider. Place the assembly face down, push the LEDs into position and solder in
place.
Plug the Main PCB into the Panel PCB…you’re done!
http://www.frequencycentral.co.uk/ RDH 17/03/15