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Document revision 2.3 – Last modification : 27/05/21

MP573 Assembly guide – Main PCB, A side

12. Jumper header

Solder jumper header JMP3. Solder one pin first, check verticality, then solder the other pins.
JMP1 and JMP2 are for future use. They allow moving the insert point, situated between first and second

stage, to the back connector. When used you will also need to add 2 wires shown in the bottom side
layout (mp573-layout.pdf).

13. Ceramic capacitors

Add C2, C3, C4, C5, C16, C17, C25, C28, C30, C31, C32, C33.

14. Vertical resistors

Insert R3, R7 to R16, R19, R20, R22, R23, R25, R38.
These resistors are placed vertically. Bend one leg 180° sharp
and insert.

15. Film capacitors

Add C9, C15, C21, C26.

16. Tantalum capacitors

Add C14, C24, C20, C22. The plus lead is the longest lead.

Warning

: The +lead must go into the +hole. Do not reverse !

17. Transistors

Add Q1 to Q5.

Warning

: Watch out the transistor direction.

18. PTC 1

Solder the thermistor PTC1.

Содержание MP573

Страница 1: ...foam Soldering All the PCB holes are metallized It means the connections between the top and bottom pads are already made The parts must be soldered only from below unless differently stated Use only small diameter solder 0 5 or 0 7 mm 1mm maximum Use the minimum possible amount of solder Bad joints are almost always caused by too much solder Here are two excellent introduction to soldering videos...

Страница 2: ...R5 R6 R28 Control the resistor values with a digital multimeter Bend the leads at 0 4 with a lead forming tool 5 Relays Add RLY1 to RLY3 Cut the pins ultra short Warning Make sure to respect the direction of the relays which is marked by a white line on the component and on the PCB marking Warning Be careful to make very good solders here because later these will be hidden by the input transformer...

Страница 3: ... Control the resistor values with a digital multimeter Bend the leads at 0 4 with a lead forming tool except for R26 and R47 which are bended at 0 6 10 Integrated Circuit Insert U3 and solder You will need to bend the pins slightly inwards before inserting Make sure you are not charged with electrostatic electricity before handling the IC or remove your shoes Warning Make sure to respect the IC di...

Страница 4: ... to add 2 wires shown in the bottom side layout mp573 layout pdf 13 Ceramic capacitors Add C2 C3 C4 C5 C16 C17 C25 C28 C30 C31 C32 C33 14 Vertical resistors Insert R3 R7 to R16 R19 R20 R22 R23 R25 R38 These resistors are placed vertically Bend one leg 180 sharp and insert 15 Film capacitors Add C9 C15 C21 C26 16 Tantalum capacitors Add C14 C24 C20 C22 The plus lead is the longest lead Warning The ...

Страница 5: ...cality then solder the other pins 20 Output TX connector Solder the connector socket CN2 Solder one pin first check verticality then solder the other pins 21 Link Connector Solder the connector header CN Solder one pin first check verticality then solder the other pins 22 Trimmer potentiometer Add P2 Solder one pin check verticality then solder the other pins Copyright 2015 SoundSkulptor ...

Страница 6: ...large tray because these metal stops are incredibly easy to drop and lose Insert SW4 Make sure that the switch if sitting perfectly flat on the PCB Solder 2 opposite pins check that the shaft is parallel to the PCB then solder the other pins Warning Double or triple check the switch position before committing to solder because it is impossible to unsolder and pretty expensive to replace The pads a...

Страница 7: ... are available Only one will be used Insert the 90 13 pins headers long tails first into the holes from the top side marked SOUNDSKULPTOR Use the supplied jumpers to hold the connector in position while you solder one pin Remove the jumpers and solder the other pins Cut the straight pins sharp Warning the pin headers must sit perfectly perpendicular to the PCB surface for a good matching with the ...

Страница 8: ...ude much over the PCB so make sure that you heat generously and see the solder flow into the holes 33 Output transformer PCB Place the 2x8 pins 90 connector on the output transformer PCB on the side where it is drawn Solder Cut the output transformer wires at approximately 14 cm 5 5 Strip out 5mm Insert one at a time the wires from the PCB side with the colour identifiers taking care of matching t...

Страница 9: ...late and attach with four 25mm spacers and 4 lock washers Do not tighten yet letting the PCB free to play within the holes size Remove the nut on the Grayhill rotary switch but leave the lock washer in place Assemble the front plate watching the LED position and attach to the side plate with 2 M3x6mm countersunk black screws Place the nut on the Grayhill and tighten gently Tighten the 4 spacers on...

Страница 10: ...sing the included 1 5mm hex key MP573 Assembly guide DI board 40 Horizontal resistors Add R59 to R61 R63 to R69 Control the resistor values with a digital multimeter Bend the leads at 0 4 with a lead forming tool 41 Vertical resistor Add R62 This resistor is placed vertically Bend one leg 180 sharp and insert Copyright 2015 SoundSkulptor ...

Страница 11: ...first adjust verticality then solder the second lead Warning The lead must go into the hole Do not reverse 46 Jack connector Add CN4 The position of the socket is important for a good front plate matching It must sit flat on the PCB Press firmly the socket on the PCB and solder one of the pins Check position then solder the other pins 47 6 pins Connector Solder the connector CN3b Solder one pin fi...

Страница 12: ...in the MP573 Setup document 50 DI board installation Place one 1 2mm black plastic spacer on the jack socket and insert into the front panel while fitting the CN3 connector pins into the socket on the main PCB Screw in the front nut through the bevelled front spacer with an M12 socket spanner 51 Closing Attach the cover PCB with four M3x6 countersunk screws Copyright 2015 SoundSkulptor ...

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