Befaco PERCALL V1 User manual

PERCALL V1- ASSEMBLY GUIDE – MAY 2020
THANKS FOR CHOOSING ONE OF OUR KITS!
This manual has been written taking into account the common issues that we often nd people experience in our
workshops. The order in which the components are placed on the board is meant to make assembly as easy as possible.
Some steps are not obvious, so even if you're an experienced D Yer please read the steps thoroughly before starting.
f this is your rst project, please read this article before you start assembling the kit:
www.befaco.org/howto/
You will be soldering both boards at the same time. Keeping them in the panel together might help you through the build.
Check last pages of the Build for PCB pics to help you identify components.
HAVE FUN!
BAG A
RESISTORS
Qty Value Code Name on PCB
31 100k Brown, black, black, orange, brown R4, R38, R41, R42, R43, R44, R46, R48, R49,
R54, R55, R68, R69, R70, R71, R105, R106,
R107, R108, R109, R110, R111, R112, R123,
R124, R125, R126, R144, R145, R146, R147
22 10k Brown, black, black, red, brown R1, R5, R6, R8, R10, R11, R14, R17, R18, R58,
R59, R76, R77, R78, R79, R100, R132, R133,
R134, R135, R136, R137
12 2k2 Red, red, black, brown, brown R19, R20, R21, R23, R25, R27, R29, R31, R117,
R118, R119, R120
11 1M Brown, black, black, yellow, brown R13, R26, R30, R33, R35, R53, R56, R72, R73,
R74, R75
9 1k Brown, black, black, brown, brown R129, R131, R143, R148, R149, R150, R151,
R152, R153
8 110k Brown, brown, black, orange, brown R24, R28, R34, R37, R60, R61, R62, R63
8 470k Yellow, viole , black, orange,brown R32, R36, R39, R40, R45, R47, R50, R51
6 330k Orange, orange, black, orange, brown R2, R3, R15, R16, R52, R57
5 2k Red, black, black, brown, brown R122, R139, R140, R141, R142
4 20k Red, black, black, red, brown R64, R65, R66, R67
4 47k Yellow, viole , black, red, brown R121, R127, R128, R130
4 56k Green, blue, black, red, brown R113, R114, R115, R116
4 91k Whi e, brown, black, red, brown R101, R102, R103, R104
1 560 Ohm Green, blue, black, black, brown R12
1 9k1 Whi e, brown, black, brown, brown R138
1 68k Blue, gray, black, red, brown R22
1 240k Red, yellow, black, orange, brown R7
1 680k Blue, gray, black, orange, brown R9
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PERCALL V1- ASSEMBLY GUIDE – MAY 2020
DIODES
Solder the diodes observing their po arity. The black or white line on the diode must match with the white line on the
diode symbol on the PCB silkscreen.
Qty Value Name on PCB
11 1N4148 D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11
2 1N5817 (black) D12, D13
FERRITE
To solder the two ferrite beads use a recycled resistor leg passed through each ferrite and proceed as if it were a
resistor. Ferrite beads don't have polarity.
Qty Name on PCB
2 F1, F2
OPEN ICs FOAM
ICs
P ace the sockets (taking care to orientate them properly – the notch or dot on one end of the C should match the
image on the silkscreen) and solder them into their correct positions.
Qty Value Name on PCB
4 DIL8 IC1, IC8, IC9, IC100
4 DIL14 IC4, IC5, IC6, IC7
2 DIL14 IC10, IC11
1 DIL16 IC2
1 DIL14 IC3
BAG B
CAPACITORS
dentifying capacitors can be quite tricky. Codes stated are indicative, please take a look at this guide for help
identifying capacitors: http://www.wikihow.com/Read-a-Capacitor
Qty Value Code Name on PCB
24 100n 104 C1, C2, C3, C4, C13, C14, C15, C16, C17, C18, C19, C20, C27, C28,
C29, C30, C33, C34, C35, C36, C37, C39, C104, C107
8 2n2 2n2 C5, C6, C7, C8, C9, C10, C11, C12
2 10pF 10 C105, C106
4 100p 101 C100, C101, C102, C103
2 1nF 102 C25, C26
2 4n7 4n7 C38, C40
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PERCALL V1- ASSEMBLY GUIDE – MAY 2020
ELECTROLYTIC CAPACITORS
Values are written on the side of the capacitor. Mind their polarity (The long leg of the capacitor is the positive (+)).
Qty Value Code Name on PCB
6 10uF 10uF C21, C22, C23, C24, C31, C32
TRANSISTORS
Be sure they are orientated correctly. The curved and flat sides of the silkscreen outline of the transistor on the PCB
must match that of the transistor’s body.
Qty Value Name on PCB
13 2n3906 T3, T6, T7, T8, T9, T10, T11, T12, T13, T100, T101, T102, T103
6 2n3904 T1, T2, T4, T5, T14, T15
POWER CONNECTOR
Solder the power connector at “POWER” ensuring it is facing out from the edge of the PCB.
ICs
Place the Cs in their respective sockets taking note of their orientation – the notch or dot on the top of the C must
match that of the socket and silkscreen.
Qty Value Name on PCB
4 TL072 IC1, IC8, IC9, IC100
4 TL074 IC4, IC5, IC6, IC7
2 AS3360 IC10, IC11
1 CD4044BE IC2
1 LM339 IC3
BAG C
MALE PIN HEADERS
Place and solder the Male Pin Headers on the silkscreen side of the main board ( t is the shorter pins that you are
soldering). Double check they all are perfectly straight.
Qty P Ns Name on PCB
2 2x8 SV2, SV3
1 2x6 SV1
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PERCALL V1- ASSEMBLY GUIDE – MAY 2020
FEMALE PIN HEADERS
Place the female pin headers on the control board over the silkscreen markings at positions and solder. Double check
they all are perfectly straight.
Qty P Ns Name on PCB
2 2x8 SV101, SV102
1 2x6 SV100
Now it’s a good moment to sp it the boards apart.
SPACER
Secure the spacer onto the CONTROL PCB (through the two hole with silver outline) with the main body of the spacer on
the component side, and the nut on the opposite.
FADER
Place he faders on he PCB where i is indica ed by he silkscreen (on he reverse side o he smaller
componen s). You can solder wo of he small pins :rs o make sure faders are s raigh . Then solder
he res .
Q y Name on PCB
4 D_P_1, D_P_2, D_P_3, D_P_4
You’re near y at the end, but the next part is critica and takes a good bit of concentration. If you’re
fee ing a bit strained, a break wou d de3nite y he p. Rep y to those unread messages or prove
someone wrong in Internet, for examp e. Mechanica parts are rea y de icate and wi need your fu
attention.
FRONT PANEL COMPONENTS MOUNTING TIPS:
Now we will proceed to mount mechanical parts to panel. This part of the assembly is CR T CAL. Please take your time
and read the following instructions carefully.
These components must NOT be soldered until they are placed on the PCB and fully attached to the front panel!!!
There are two reasons for this:
•The height of the panel components are not all the same. Because of this, if not attached properly before
soldering, they will not stay properly seated against the panel. This might cause mechanical stress reducing their
life expectancy and in the worst case cause them to break.
•The second reason is that it is very difcult to align the components to the holes if the panel is not positioned
prior to soldering.
MINI-JACKS
Place the mini-jacks on the PCB ensuring they are on the side with the silkscreen. Some of the minijacks ground legs
will share the same solder holes (the 12 at the bottom). don't so der them unti the front pane is in p ace with a nuts
screwed to it. This way it's easier to solder them in the right position. Keep in mind that the front panel holes are quite
narrow and it is almost impossible to place it with all the components already soldered.
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PERCALL V1- ASSEMBLY GUIDE – MAY 2020
POTENTIOMETERS
Now place the potentiometer on the PCB but... don't so der them yet!
Qty Type Name on PCB
4 Single (3pin) B100k VOL1, VOL2, VOL3, VOL4
SWITCHES
Place he swi ches in heir righ places. don't so der them yet!
Qty Type Name on PCB
2 Mini. One circui s wo posi ion LINK1, LINK2
LEDs
Place he LEDs on o main PCB minding i s polari y, bu don't solder them un il he fron panel is in
place. This is he only way o solder hem he righ posi ion.
Q y Type Name on PCB
4 Red LED 2mm L_1, L_2, L_3, L_4
FRONT PANEL
Attach the front pane adjusting the parts one by one if necessary until it ts. At this point a pair of ne tweezers can be
helpful.
To Finish:
- Screw in the parts in this order: A) Mini-jacks B) Pots.
- Ensuring all of the above parts are flush with the panel and both PCB and panel are perfectly parallel. Then
you can 3na y so der them!
- Fit the LEDs on the panel holes and solder them
- Put the knobs on the potentiometers and the red caps on the switches/Faders.
- Connect the power ribbon cab e: The red wire (-12V) on the power ribbon cable corresponds to pin number one
on the male power connector. The number one pin is indicated with a small triangle on the male power connector and a
white line on the main PCB. A white or black line (or “-12v”) marked on your power bus normally indicates the
corresponding pin.
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PERCALL V1- ASSEMBLY GUIDE – MAY 2020
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IC10
IC11
IC8
IC9

PERCALL V1- ASSEMBLY GUIDE – MAY 2020
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PERCALL V1- ASSEMBLY GUIDE – MAY 2020
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