mb808 FAB manual

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Roy Sutton
6 years ago
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1 mb808 FAB manual

Step one: Power Supply: ATTENTION: You will be dealing with AC mains voltages in this part of the build, if you are not careful you can injure yourself, or worse!

2 Step one: Power Supply: ATTENTION: You will be dealing with AC mains voltages in this part of the build, if you are not careful you can injure yourself, or worse! Keep a clean bench and *PAY ATTENTION* to what you are doing! 1.) Solder in all diodes except D41. 2.) Solder in the two 1K resistors and LED's 1 and 2. 2.) Solder in all 100n capacitors except c24. Any poly or lytic cap will work here and a voltage rating of at least 35v is reccomended. Place c24 on the top side of the board so it doesn't get in the way of the heatsink on the 5v regulator. Leave enough leads on the cap so that it will lie flat on the PCB and not get in the way of the front panel. 3.) Solder in the 4 pin connector for the transformer in with the friction lock on the north side of the board (this is in backwards on mine). 4.) Solder in the fuses. The PSU will still function without them, but do so at your own risk. 5.) Attach heatsinks to the regulators. You *must* use a heatsink on the 5v regulator, but you may be able to get away without them on the +15v regulators. In either case be aware that these IC's can and will get *very* hot! 6.) Solder in the Regulators with the metal tab to the north side of the board. 7.) Solder in the big lytic caps. These should all be at least 35 volts except c22 which can be as low as 6.3v because it is after the 5V regulator. It's not a bad idea to use a 2200uF 16v cap for c22.

3 8.) Double check that all components except D41 are soldered in. Check for solder bridges by using the continuity tester on your DMM. 9.) Connect the wires of the transformer's primary winding to the power jack and power switch. If you are using the Amveco transformer the wires should be connected Red and Yellow together to one pole of the switch and Black and Purple together to one tab on the power jack. Connect the other tab on the power jack to the other pole of the switch. In the Pic you can see that I soldered the power switch directly to the inlet jack. Obviously this won't work in a case, but while testing it kept the amount of wiring that was carrying AC mains to a minimum.

4 10.) Connect the wires from the secondary windings on the transformer to the connector in the order Blue, Brown, Red, Green. 11.) Place a 125v fuse in the power jack. 12.) Connect a power cable and test for AC voltage from Blue to Brown and Green to Red 13.) Connect the power connector to the PCB, power it on, and check for voltage across the two large capacitors. If there is at least 15v then check for +15v at the outputs of the regulators (the LED's should be on and stay on). 14.) Solder in D41. BE ABSOLUTELY SURE THAT THE CAPS ARE DISCHARGED. Place a 10K resistor across their terminals for 10 seconds first if you are not sure. 15.) Check the output of the 5V regulator.

5 Bill Of Materials Partlist exported from 808_production_PSU.sch at 5/10/ :22:07p Qty Value Device Parts Notes 1-15 volt regulator IC36 2 PCB mounted F1, F3 fuse 2 3MM LED LED1, LED2 1 3 Pin Header DC-OUT 1 4 Pin.156" spaced SV1 header 9 1N4004 Power Diode D29, D32, D33, D34, D35, D36, D37, D38, D Electrolytic Capacitor C211, C212, C213, C214, C215, C216, C222, C223, C224, C225, C226, C227, C228, C229, C230, C231, C232, C233, C234, C235, C236, C V 15 volt regulator IC2 1 78V 15 volt regulator IC n Electrolytic C9, C23, C24, C25, C26, C112 Capacitor 2 470K Resistor R382, R uf Electrolytic C21, C22 Capacitor uf Electrolytic C8, C10 Capacitor 1 MA pin header

Step Two: The Core For additional information about the MidiBox Core module, see these pages: http://www.ucapps.de/mbhp_core.html http://www.avishowtech.com/mbhp/mbhp_corer4d.html 1.

6 Step Two: The Core For additional information about the MidiBox Core module, see these pages: ) Solder in all resistors 2.) Solder in the 2 100n (104) capacitors 3.) Solder int he Crystal, it does not matter which direction 4.) Solder in the Diodes 5.) Solder in the 40 pin socket for the PIC and the 2 8 pin sockets for the Opto Isolator and the EEPROM 6.) Solder in the optional components R6, R7 and T1 which are used to adjust the brightness and contrast of the LCD screen. Transistor T1 is a BC337 so if you want to use a 2n3904 you will need to bend the leads as the pinout is different (I'll check the datasheet and make a diagram). 7.) Solder in the 2 33p capacitors next to the crystal 8.) Before putting any IC's in their sockets power the unit on and test for 5v across the 100n capacitors.

9.) Connect a MIDI cable to the output connector 10.) Using a program like MIDIOx or (preferably) MIOS Studio (http://miosstudio.midibox.

7 9.) Connect a MIDI cable to the output connector 10.) Using a program like MIDIOx or (preferably) MIOS Studio ( watch the input midi monitor when you power the unit on (remember to put the IC's in now). You should see a HEX message similar to F etc. If you see nothing start checking components around the MIDI out port. 11.) Alternately you can connect a LCD to the Core and see if the application boots up. If you can't see anything at first remember to adjust the brightness and contrast pots. I'll post some more detailed information about connecting the LCD's once I find it, but remember that this is all standard MidiBox stuff, so search the midibox forum and wiki! Be careful with a LCD hooked up.. in all likelyhood the 5v regulator is going to get *very* hot!

8 Bill Of Materials Partlist exported from 808_production_Core.sch at 5/10/ :17:45p Qty Value Device Parts Mouser 2 3 Pin Header MIDI-IN, MIDI-OUT Pin Header SV Dual 4 Pin header SV2 1 Dual 8 Pin Header SV4 1 Resistor R K Resistor R10, R11, R18 1 1K2 Resistor R N4148 Diode D1 1 10MHZ Timer Crystal XTAL 1 5K6 Resistor R N138 OptoCoupler OPTO-ISO 2 10K Trim Pot R6, R7 2 10K Resistor R8, R KB Pot SWING 1 24LC256P EEPROM IC1 2 33p Ceramic Disc Capacitor C19, C n Mulitilayer Ceramic Capacitor C17, C R R-US_0207/7 R138, R140, R141 1 BC337 Transistor T1 1 PIC18F4X2DIL40 Microcontroller MCU

9 Step Three: DOUTs For more information about these circuits check out these sites: The top two rows of IC's in the digital section are the Digital Outs which are responsible for controlling the LED's and sending the Instrument and Accent trigger pulses. TIP: It is not a bad idea to test for continuity between the 5v rail and ground after soldering in each Socket, it's much easier to identify solder bridges this way. 1.) Solder in the 16 pin sockets (Note, some early versions of the BOM have the count for 14 and 16 pin sockets mixed up, you will need pin sockets total) 2.) Solder in the 100n (104) capacitors, one per set of sockets. Bill Of Materials Partlist exported from 808_production_Dout.sch at 5/10/ :20:00p Qty Value Device Parts 2 Lighted Tact Switch LED42, LED K Resistor Network RN2, RN3, RN5, RN6, RN n Multilayer Ceramic cap C1, C2, C3, C4, C5, C6, C7 7 74HC595N 74HC595N IC9, IC10, IC11, IC12, IC13, IC14, IC R Resistor Network RN1, RN4 2 s14 LED3MM BAR-LED, BEAT-LED

10 Step Four: DIN's For more information about these circuits, please check out these sites: TIP: It's not a bad idea to check for continuity between the 5v rail and ground after soldering in each IC socket. 1.) Solder in the 16 pin IC sockets. 2.) Solder in the 100n caps 3.) Solder in the in line resistor networks. They should have a marking on one end indicating the common pin. This pin should be connected to the 5v rail on the pcb (the thick trace) this pin is on opposite sides for each side of the IC. You can ignore the resistor that is silkscreend on the PCB. If your networks have an extra pin (or more) just bend the unused ones up out of the way. 4.) Don't solder in the switches, they will be the last components to go in the board. Bill Of Materials Partlist exported from 808_production_Din.sch at 5/10/ :19:43p Qty Value Device Parts 33 Lighted Tact Switch A, B, EDIT, EXIT, FWD, GP-1, GP-2, GP-3, GP-4, GP-5, GP-6, GP-7, GP-8, GP-9, GP-10, GP-11, GP-12, GP-13, GP-14, GP15, GP16, LOOP, MENU1, MENU2, MENU3, MENU4, MUTE, PATTERN, PLAY, RWD, SELECT, SONG, STOP 12 10K Resistor Network RN13, RN14, RN15, RN16, RN17, RN18, RN19, RN20, RN21, RN22, RN23, RN K Resistor R1, R2, R3, R4, R5, R n Electrolytic C11, C12, C13, C14, C15, C16 Cap 6 74HC165N 74HC165N IC3, IC4, IC5, IC6, IC7, IC8 2 SNAPIN- ENCODER Rotary Encoder INSTRUMENT, TEMPO

11 Step Five: Trigger Indicators TIP: Don't solder these components in right away if you think you might want to use the dual LCD's TIP: DON'T SOLDER IN THE Capacitors or any components marked with a red dot on the diagram! 1.) Solder in the 100k and 1k resistors. Pay attention to their position, only most of them follow the same pattern. 2.) Solder in *ONE* transistor for each indicator. The second one (along with the cap) is there to make the LED blink brighter.. but it's not a very good circuit, so it's best you simply ignore it. Check back here for a pic showing which transistors not to solder in. 3.) Using LED spacers *carefully* solder in each LED so that it is completely straight and true to the PCB Bill Of Materials Partlist exported from 808_production_TriggerLED.sch at 5/10/ :22:51p Qty Value Device Parts 12 3mm LED BD-SEL, CB-SEL, CH-SEL, CP-SEL, CY-SEL, HT-SEL, LT-SEL, MA-SEL, MT-SEL, OH-SEL, RS-SEL, SD-SEL 12 1K Resistor R442, R445, R448, R451, R454, R457, R460, R466, R469, R472, R475, R N3904 Transistor T3, T4, T5, T6, T7, T8, T9, T11, T12, T13, T14, T K Resistor R440, R441, R443, R444, R446, R447, R449, R450, R452, R453, R455, R456, R458, R459, R464, R465, R467, R468, R470, R471, R473, R474, R476, R477

Step Six: BD With the BD (and all the other instrument circuits) all you need to do is solder in the components, go by order of their height to make the physical assembly easier.

12 Step Six: BD With the BD (and all the other instrument circuits) all you need to do is solder in the components, go by order of their height to make the physical assembly easier. DON'T solder in the pots, trim pots or switches, those will be the last things you solder in. Once you've finished each circuit check for continuity from the 15v rails and ground to be sure there isn't a bridge there. Note that the BOM lists the Op-Amp as a TL072. It will work just fine in this circuit, but the original uses JRC4558's

13 Bill Of Materials Partlist exported from 808_production_BD.sch at 5/10/ :17:11p Qty Value Device Parts 1 SPDT Switch BD-RT 2.47/50 Electrolytic Capacitor C27, C47 1 1uF 50 Volt Electrolytic Capacitor C50 1 1K Resistor R M Resistor R156, R161, R N4148 Diode D52, D53 1 2K7 Resistor R SA733 PNP Transistor Q40 5 2SC945 NPN Transistor Q39, Q41, Q42, Q43, Q44 1 4K7 Resistor R K7 Resistor R K Resistor R K8 Resistor R K2 Resistor R K Resistor R153, R154, R KA Pot BD-TUNE 1 10KB Pot BD-TONE 3 15n Polyester Capacitor C40, C41, C K Resistor R K Resistor R152, R165, R /6.3 Electrolytic Capacitor C n Polyester Capacitor C K Resistor R K Resistor R K Resistor R K Resistor R159, R163, R174, R KA Pot BD-LEV 2 100n Polyester Capacitor C38, C R Resistor R p Ceramic Capacitor C K Resistor R KB Dual Pot BD-DECAY 2 MA Pin Header U$21, U$55 1 TL072P OpAmp IC17

14 Step Seven: SD

15 Bill Of Materials Partlist exported from 808_production_SD.sch at 5/10/ :22:38p Qty Value Device Parts 1 SPDT Switch SD-RT 1.47/50 Electrolytic Capacitor C n Polyester Capacitor C51, C52 21K Resistor R19, R28 11M Resistor R22 11N4148 Diode D2 11n Polyester Capacitor C n Polyester Capacitor C53 12K2 Resistor R40 12M2 Resistor R38 12SA733 PNP Transistor U$2 42SC945 NPN Transistor U$1, U$4, U$5, U$6 14K7 Resistor R n Polyester Capacitor C28, C32, C33 18K2 Resistor R20 210K Resistor R9, R14 110KB Pot SD-SNAPPY 110n Polyester Capacitor C54 215K Resistor R30, R33 322K Resistor R12, R34, R36 122n Polyester Capacitor C55 127K Resistor R39 227n Polyester Capacitor C29, C30 133/6.3 Electrolytic Capacitor C36 133K Resistor R29 147/16 Electrolytic Capacitor C44 347K Resistor R23, R25, R35 247n Polyester Capacitor C31, C K Resistor R15, R KB Pot SD-LEV, SD-TONE 2100R Resistor R32, R n Polyester Capacitor C R Resistor R p Ceramic Capacitor C R Resistor R K Resistor R R Resistor R17, R K Resistor R16 2 MA Pin Header U$57, U$71 2 TL072P OpAmp IC18, IC19

16 Step Eight: Noise Bill Of Materials Partlist exported from 808_production_Noise.sch at 5/10/ :21:50p Qty Value Device Parts 1 1uF 50volts Electrolytic Capacitor C M Resistor R278, R SC828 Transistor U$30 1 4K7 Resistor R n Polyester Capacitor C KB Trim Pot CB-TUNE3 2 22K Resistor R279, R n Polyester Capacitor C /16 Electrolytic Capacitor C R Resistor R K Resistor R K Resistor R283 1 TL072P OpAmp IC31

17 Step Nine: LT

18 Bill Of Materials Partlist exported from 808_production_LT.sch at 5/10/ :20:59p Qty Value Device Parts 1 SPDT Switch LT-RT 1 DPDT Switch LT/LC 2 1K Resistor R52, R57 1 1K5 Resistor R65 1 1MB Dual Pot LT-DECAY 2 1N60 Germanium Diode U$3, U$19 2 1N4148 Diode D4, D7 1 1n Polyester Capacitor C61 1 2M2 Resistor R63 1 2SA733 PNP Transistor Q5 2 2SC945 NPN Transistor Q6, Q7 1 3K3 Resistor R61 5 4K7 Resistor R41, R45, R46, R47, R n Polyester Capacitor C K Resistor R42, R n Polyester Capacitor C K Resistor R n Polyester Capacitor C K Resistor R43, R58, R /6.3 Electrolytic Capacitor C K Resistor R K Resistor R49, R n Polyester Capacitor C K Resistor R n Polyester Capacitor C59, C n Polyester Capacitor C64, C n Polyester Capacitor C K Resistor R53, R KA Pot LT-LEV, LT-RVB 1 470K Resistor R R Pot LT-TUNE 1 820K Resistor R K Resistor R388 2 MA Pin Header U$58, U$72 1 TL074P Quad OpAmp IC20

19 Step Ten: MT

20 Bill Of Materials Partlist exported from 808_production_MT.sch at 5/10/ :21:30p Qty Value Device Parts 1 SPDT Switch MT-RT 1 DPDT Switch MT/MC 21K Resistor R114, R119 11MB Dual Pot MT-DECAY 21N60 Germanium Diode U$22, U$23 21N4148 Diode D8, D9 11n Polyester Capacitor C n Polyester Capacitor C99 12K2 Resistor R210 12M2 Resistor R209 12SA733 PNP Transistor Q8 22SC945 NPN Transistor Q9, Q10 13K3 Resistor R207 44K7 Resistor R86, R90, R91, R188 16K8 Resistor R92 210K Resistor R87, R89 112n Polyester Capacitor C K Resistor R n Polyester Capacitor C K Resistor R88, R120, R213, R n Polyester Capacitor C100, C /6.3 Polyester Capacitor C K Resistor R99 233K Resistor R94, R n Polyester Capacitor C119, C n Polyester Capacitor C K Resistor R n Polyester Capacitor C K Resistor R115, R KA Pot MT-LEV, MT-RVB 1470K Resistor R R Pot MT-TUNE 1820K Resistor R K Resistor R387 2 MA pin header U$60, U$73 1 TL074P Quad OpAmp IC27

21 Step Eleven: HT

22 Bill Of Materials Partlist exported from 808_production_HT.sch at 5/10/ :20:30p Qty Value Device Parts 1 SPDT Switch HT-RT 1 DPDT Switch HT/HC 2 1K Resistor R225, R K5 Resistor R MB Dual Pot HT-DECAY 2 1N60 Germanium Diode U$24, U$25 2 1N4148 Diode D15, D18 1 1n Polyester Capacitor C n Polyester Capacitor C M2 Resistor R SA733 PNP Transistor Q11 2 2SC945 NPN Transistor Q12, Q13 1 3K3 Resistor R K7 Resistor R113, R218, R219, R n Polyester Capacitor C K6 Resistor R K Resistor R215, R n Polyester Capacitor C K Resistor R K Resistor R216, R231, R239, R n Polyester Capacitor C n Polyester Capacitor C124, C /6.3 Electrolytic Capacitor C K Resistor R K Resistor R222, R n Polyester Capacitor C127, C K Resistor R n Polyester Capacitor C K Resistor R226, R KA Pot HT-LEV, HT-RVB 1 470K Resistor R R Pot HT-TUNE 1 820K Resistor R K Resistor R345 2 MA Pin Header U$68, U$74 1 TL074P Quad OpAmp IC28

23 Step Twelve: CP

24 Bill Of Materials Partlist exported from 808_production_CP.sch at 5/10/ :17:59p Qty Value Device Parts 1 SPDT Switch CP-RT 1.47uF 50v Electrolytic Capacitor C n Polyester Capacitor C81 11uF 50v Electrolytic Capacitor C77 31K Resistor R158, R179, R201 41M Resistor R68, R69, R192, R198 41N4148 Diode D19, D20, D21, D22 21n Polyester Capacitor C87, C92 12K2 Resistor R181 12K7 Resistor R190 32SA733 PNP Transistor U$7, U$13, U$14 42SC945 NPN Transistor U$8, U$9, U$12, U$ n Polyester Capacitor C79, C80, C82 14K7 Resistor R197 34K7 Resistor R67, R195, R196 15K6 Resistor R K Resistor R66, R136, R145, R149, R187, R KB Trimpot CP-OFFSET 315K Resistor R147, R180, R n Polyester Capacitor C75, C83 222K Resistor R51, R n Polyester Capacitor C84 227K Resistor R150, R n Polyester Capacitor C88 133uF 6.3v Electrolytic Capacitor C90 133n Polyester Capacitor C78 139K Resistor R K Resistor R151, R199, R n Polyester Capacitor C76 268K Resistor R185, R K Resistor R K Resistor R148, R KA Pot CP-LEV 2220p Ceramic Capacitor C86, C K Resistor R R Resistor R144, R K Resistor R K Resistor R R Resistor R146 1 LM3080N OTA IC22 2 MA Pin Header U$61, U$75 1 TL072P OpAmp IC21 1 TLC339P Quad Comparator IC39

25 Step Thirteen: MA Bill Of Materials Partlist exported from 808_production_MA.sch at 5/10/ :21:14p Qty Value Device Parts 1 SPDT Switch MA-RT 11K Resistor R111 11M Resistor R107 31N4148 Diode D3, D5, D6 21n Polyester Capacitor C105, C106 32SA733 PNP Transistor U$11, U$16, U$20 32SC945 NPN Transistor U$10, U$17, U$18 13K3 Resistor R103 14K7 Resistor R96 16K8 Resistor R K Resistor R95, R98, R n Polyester Capacitor C104, C K Resistor R K Resistor R97, R /6.3 Electrolytic Capacitor C n Polyester Capacitor C K Resistor R n Polyester Capacitor C K Resistor R K Resistor R K Resistor R KA Pot MA-LEV 1100n Polyester Capacitor C K Resistor R K Resistor R p Ceramic Capacitor C K Resistor R K Resistor R101 2 MA Pin Header U$63, U$77 1 TL072P OpAmp IC26

26 Step Fourteen: RS

27 Bill Of Materials Partlist exported from 808_production_RS.sch at 5/10/ :22:24p Qty Value Device Parts 1 SPDT Switch RS/CL-RT 1 DPDT Switch RS/CL 1.47uF 50v Electrolytic Capacitor C73 11K Resistor R72 21K Resistor R125, R503 11M Resistor R81 11M Resistor R390 41N4148 Diode D11, D12, D13, D14 11n Polyester Capacitor C n Polyester Capacitor C70, C71, C72 12M2 Resistor R84 12SA733 PNP Transistor U$29 42SC945 NPN Transistor U$28, U$31, U$33, U$59 12SK30 FET Transistor U$ n Polyester Capacitor C67, C74, C95, C96 14K7 Resistor R K Resistor R80 110uF 16v Electrolytic Capacitor C97 110K Resistor R K Resistor R77, R83, R121, R124, R126, R129, R n Polyester Capacitor C68, C91 522K Resistor R85, R122, R128, R133, R n Polyester Capacitor C p Ceramic Capacitor C93 133/6.3 Electrolytic Capacitor C94 233K Polyester Capacitor R75, R K Resistor R73 347K Resistor R78, R132, R n Polyester Capacitor C K Resistor R KA Pot RS/CL-LEV 3220K Resistor R76, R82, R K Resistor R K Resistor R K Resistor R K Resistor R K Resistor R71 2 MA Pin header U$62, U$76 2 TL072P OpAmp IC24, IC25

28 Step Fifteen: CB

29 Bill Of Materials Partlist exported from 808_production_CB.sch at 5/10/ :17:27p Qty Value Device Parts 1 SPDT Switch MA-RT1 1.47/50 Electrolytic Capacitor C134 21uF 50v Electrolytic Capacitor C135, C142 31K Resistor R256, R260, R277 31N4148 Diode D10, D16, D n Polyester Capacitor C138, C139 32K2 Resistor R252, R257, R258 12SA733 PNP Transistor Q1 42SC945 NPN Transistor Q2, Q3, Q4, U$ n Polyester Capacitor C140 14K7 Resistor R224 15K6 Resistor R262 18K2 Resistor R uF 16v Electrolytic Capacitor C136, C K Resistor R243, R250, R251, R n Polyester Capacitor C n Polyester Capacitor C148, C n Polyester Capacitor C146, C147, C K Resistor R241, R242, R n Polyester Capacitor C143, C K Resistor R259, R264, R /6.3 Electrolytic Capacitor C K Resistor R244, R245, R KA Pot CB-LEV 2100R Resistor R246, R K Resistor R265, R268, R270, R272, R274, R K Resistor R K Resistor R KB Trim Pot CB-TUNE1, CB-TUNE2 3470K Resistor R247, R249, R K Resistor R273, R K Resistor R N Schmitt Trigger IC30 2 MA Pin Header U$64, U$78 1 TL072P OpAmp IC29

30 Step Sixteen: CY

31 Bill Of Materials Partlist exported from 808_production_CY.sch at 5/10/ :19:25p Qty Value Device Parts 1 SPDT Switch CY-RT 1.47/50 Electrolytic Capacitor C n Polyester Capacitor C159, C166, C170, C171, C185, C uF 50v Electrolytic Capacitor C167, C173, C K Resistor R MB Dual Pot CY-DECAY 6 1N4148 Diode D23, D24, D25, D26, D27, D28 5 1n Polyester Capacitor C155, C175, C176, C179, C /50 Electrolytic Capacitor C165, C K2 Resistor R M Resistor R290, R295, R SA733 PNP transistor U$37 7 2SC945 NPN Transistor U$32, U$34, U$35, U$36, U$38, U$39, U$ n Polyester Capacitor C156, C157, C161, C177, C K7 Resistor R K Resistor R n Polyester Capacitor C162, C K Resistor R299, R304, R311, R323, R n Polyester Capacitor C178, C181, C184, C K Resistor R K Resistor R314, R KB Pot CY-TONE 11 22K Resistor R286, R294, R300, R302, R303, R308, R315, R317, R318, R328, R n Polyester Capacitor C158, C164, C /6.3 Electrolytic Capacitor C K Resistor R289, R291, R296, R309, R310, R K Resistor R K Resistor R307, R320, R /16 Electrolytic Capacitor C K Resistor R K Resistor R287, R292, R K Resistor R KA Pot CY-LEV 5 100R Resistor R288, R293, R297, R298, R p Ceramic Capacitor C K Resistor R312, R R Resistor R333, R334 2 MA Pin Header U$65, U$79 3 TL072P OpAmp IC32, IC33, IC34

32 Step Seventeen: HH

33 Bill Of Materials Partlist exported from 808_production_HH.sch at 5/10/ :15:09p Qty Value Device Parts 2 SPDT Switch CH-RT, OH-RT 2.47/50 Electrolytic C190, C192 Capacitor 6 1.5n Polyester Capacitor C195, C196, C197, C198, C199, C K Resistor R374, R M Resistor R MB Dual Pot OH-DECAY 2 1N4148 Diode D30, D31 2 1n Polyester Capacitor C200, C K7 Resistor R365, R M Resistor R363, R SA733 PNP Transistor U$42, U$ SC945 NPN Transistor U$41, U$43, U$45, U$46, U$47, U$48, U$49, U$50, U$51, U$52, U$53, U$54 2 4K7 Resistor R340, R uF 16v Electrolytic C189 Capacitor 5 10K Resistor R337, R344, R350, R351, R K Resistor R339, R341, R342, R346, R348, R349, R379, R n Polyester Capacitor C193, C /6.3 Electrolytic C205, C207 Capacitor 5 33K Resistor R343, R357, R359, R378, R K Resistor R369, R /16 Electrolytic C191 Capacitor 2 47K Resistor R371, R K Resistor R367, R K Resistor R352, R KA Pot CH-LEV, OH-LEV 3 100R Resistor R358, R361, R p Polyester Capacitor C206, C K Resistor R K Resistor R373, R R Resistor R354, R p Ceramic Capacitor C203, C204 1 HH-AC/TR 3 Pin Header SV12 2 MA02-2 Pin Header U$66, U$ TL072P OpAmp IC35

Step Eighteen: Accent Bill Of Materials Partlist exported from 808_production_Accent.sch at 5/10/2007 10:15:37p Qty Value Device Parts 1 3mm LED AC-SEL 2.

34 Step Eighteen: Accent Bill Of Materials Partlist exported from 808_production_Accent.sch at 5/10/ :15:37p Qty Value Device Parts 1 3mm LED AC-SEL 2.47/16 Electrolytic Capacitor C242, C243 11K Resistor R463 52N3904 NPN Transistor T2, T10, T16, T17, T18 34K7 Resistor R396, R397, R K Resistor R KB Pot ACCENT 122K Resistor R K Resistor R K Resistor R K Resistor R461, R R Resistor R400

2xVCX version 1.0. Calibration instructions can be found on the last page. Capacitor bypass MLCC X7R mm pin pitch

2xVCX version 1.0. Calibration instructions can be found on the last page. Capacitor bypass MLCC X7R mm pin pitch Produced by: Roll Your Own ljunggrenaudio.com Schematic & PCB Design by: KYMATICA DEVICES www.kymatica.com xvcx version.0 Bills Of Material Bold = PCB C C C3 C4 C5 C6 C7 C8 C9 C0 C C C3 C4 CON D D D3 D4