Nord Electro 2 Service Manual
Contents
1. DRAW 1 DRAW 5 DRAW 6 DRAW 7 duD52 D53 D54 D55 D56 D57 D58 D59 Ta L1 lmt 1 0 21111111 HDL BTR R47__ 100 LEONIS pM ee AD Ref 4 504 V ZiD68 D69 C3 i d didi 3 nr M Le Lum Lgs Does yen Lon Ln gen gen Lene Lun Lue Li E bom ens Lene Lune Lue Lue Lame Len Lans m Lus ues Lus Luna peus yp unas unn vem peu Lupus gens gene Lupus gens peus Lupus i Hoe Leer Leer Loep Luo ver Loep Leer Comp x i i i WD8 U ne i Jd i Control Pedal 5V RefOut SHDN SStrb Refln 74HC374 TSSOP Dout U9 MAX1112 CAP 20SSOP t4 45V RefOut 4 SHDN Refln S2 45V uid Prantcerscale 0 92 CON26pol dien M1 M2 38 single LED M3 M4 5V 49 knappar 74HC374 TSSOP itle M5 M6 a ie 226529 nord electro panel board vers 1 00 M7 M8 Separat 5V matning fran kontakt till AD omv Size Document Number M9 0 1u 0 1u 0 1u 0 1u QO 1u Separat jord till alla pottar fran AD omv A3 PCB 2R J1398 020213 4 8mm plated mountingholes Date Thursday February 14 2002 Sheet A Oooo B O 1 P1 ITT shadow NE18 Q O H1 md HeatSink K18 Power connector HEIL 2573 U1 MIC29150 3 3BT TO220 D1 D2 133 4700p Rifa PME 271 250V 1N5401 1N5401 C44 L1 Fuseholder Shurter 0031 3577 FAU SHAFFNER RN 112 0 8 2 10mH Bt HeatSink K18 U2 2940 TO220 Ti D3 1N5401 NO 4700p Rifa PME 271 250V2. In out 1N5401 p A pa ssa g a i C5 C4 E Q 10u mmm 3 LORD cud 3300u 25V Rifa a 3 ZEN EE De 1N5401 9 dl ni U3 D7 1N5401 7812 TO 220 Revision History Ka ett Rev 0 x to 1 00 main In E C6 developement a wer eee TH 1 10 Fuseholder modified Trafo TD7680 4 6V 22VA U4 2 TNT 7912 TO220 in out ze c oO 1000u 40V Rifa M1 M2 M3 In out xe a 4 C10 10 PCB 2R J1443 010110 Printerscale 0 92 Nord Power vers 1 10 Size Document Number Hev A4 1 Date Wednesday January 10 2001 Sheet 1 of 1 aS a OP
3. piss U19D NFM41R 2200p So a4 b Reo 12V 100p T dus BC847 SOT23 10k Eu R66 18 C54 R64 ca 10k O Q6 74LV08 PHONEJACKSTEREO R69 R70 NFM41R 2200p n i 10u Ed mt iss 1M 10u 10u 4 7K M2 silent gnd 74HC32 soic 74HC32 soic i 1 a M3 cz 9 Nw Norm M4 939t027 ces ces cao cst cse css ca4 cas css 9V Tcsae cao cai cue cas cas cas cas Toar c4e cae oso cs cse mountingholes 4 8mm plated 0 1u 40 1u J0 4u 40 1u 40 1u 410 1u j0O iu 40 1u jO0O lu 10 1u 0 1u 40 1u J0 4u J0 4u 40 1u 410 1u j0O lu j0O 1u J0 4u O 1u 0 1u 40 1u 10 1u 0 1u 12V 12V r O 0 1u C38 42V co A owerpinst P P MC68331 SIZO SIZ1 TXD RXD RESET U21D 74HC32 soic USB con U29 74HC374 TSSOP U5 74HC374 TSSOP U12 74HC374 TSSOP 20pol MicroMatch Keyboard Connector P2 SSTT gt p SSTT 3 Lees spe p in SiT s JTT e l LI 3E 451 sd FTIIT IIT g L TT TT a dup T s 38 L5 dT dps 4 ILI TLITTT a JTI I 343 TT TTT ety 141 Cece e A le 16pol MicroMatch Q 4 7k A 1 f 1 1 4 A 7k Keyboard Connector Q R7 R9 Rii RIS v u31 R8 R10R12 R14 HCH soic 3 P6 5V Q a 5 I Sa 2 8 1 9 10 Svo vu Connector nd il 5V A 10k L 10k O 2 3 Pe SDA A2 s mde g N52 X24C16 E oe DE 45V Fi z NFM41R 2200p bed i CON26pol Bes O
4. CONTROL 470 F2NFM41R 2200p oe 20 INPUT ee R27 PHONEJACKSTEREO 8 2k silent gnd 2 R78 100k U28B 74HC32 soic F17 NFM41R 2200p silent gnd 4 F6 NFM41R 2200p O J6 74HC32 soic a KOTOR silent gnd PHONEJACK FDAL R4110k mm UMC 9 F7 NFM41R 2200p j ae E Jf orarN 74HC32 soic L A DENAT PHONEJACK silent gnd 5V U25 PC400Z R51 220 F9 NFM41R 470p C l oS V IN J8 R53 MIDI 220 x 4 OUT IN Dom F10L ite silent gnd R55 220 F11 NFM41R 470p z O 4 U28A tas Pm fo M oe 5 NFM41R 470p XO MIDI m Hates E R58220 OT 74HC32 soic silent gnd DIN5pol Plottscale 0 665 st ende PCB ZR UL399 020125 itle Nord electro main board vers 1 00 Size Document Number Rev A2 1 Date Friday January 25 2002 Sheet LD128 LD129 LEDdispla LEDdispla Rev history v 0 91 gt v 0 92 Ld125 green fixed in assy dwg DRAWS up DRAW9 up S20 S21 S22 S23 S9 S17 G Bot peelable mask added v 0 92 v 1 00 2 resistors added 0R for DRAW5 dw DRAW9 dw version handling R50 51 Old R100 and R101 S10 S18 renamed to R48 and R49 LD130 red added m gee DRAW6 up S11 4 G 4 D5 BAV70 dul P inner dll nts G L UM DRAW7 i D8 BAV70 D8 PY lid Iysdiod ar rod ec dw Li DIN Ej fylld lysdiod r gr n 2 Dia N D2 D3 D4 JA D5 ZLD6 D7 S15 BR s EQUI LG a SERE DER WT D11 BAV70 DRAW8 dw 16 WD8 2 z o 74HC374 TSSOP
5. Rev 1 0 2005 06 10 Nord Electro 2 Service Manual Clavie Revision history Rev 1 0 First release Overview There are three different Nord Electro 2 models 61 note keyboard version 73 note keyboard version rack version 63 note keyboard note keyboard version 73 note keyboard version Uploading OS and sounds The operating system and sampled sounds are stored in FLASH circuits on the main board For information on how to update the OS and uploading sounds visit www clavia se Click on Products Nord Electro 2 and then choose either free software or free sounds Returning to factory settings It is not possible to return to factory settings without connecting the Nord Electro to a computer Once connected you can dump the factory settings and the latest OS Visit http www clavia se for details Running the test program The test program is stored in an EPROM located in position U17 If the version is older than 0 20 there is no test program is available To find out which EPROM version that is installed the Nord Electro needs to be opened In order to trace a hardware error easier each Nord synthesizer has a test program This program is primarily used in production in order to test all functions However any user can access the test program by holding down certain buttons at power up The functions provided by the test program allow a quick and easy search for possible errors in the hardware Test resul
6. e blown Many times the problem can be as simple as that Also check the power rating on the back panel to make sure that it complies with your country Does all voltages appear on the power supply unit main board For information on where to measure the different voltages see the schematic Is there a bad connection Check all ribbon cables and connectors to see that they are fixed in their respective positions Is there a bad solder joint A bad solder joint might be difficult to discover on surface mount components but should be easy to find on hole mount components like jacks and connectors Are all components and connectors in good condition Inspect the card to see if the problem can be detected visually In general some types of errors that are hard to trace might be cured by cleaning the board with an electronic cleaning solvent Sometimes this can remove conductive debris that shorts out tightly spaced component pins It might also help to gently scratch the surface between component pins with a scalpel ot a similar fine tipped instrument in order to remove debris The above list is by no means complete but it can give an indication on where the problem might be located Input or output jacks not working The Nord Electro is built with high quality components and the circuit boards are well protected in a steel chassis to withstand physical strain However input and output jacks are exposed to possible damage for exampl
7. e when dropping the synth If a jack is not working check the EMI filter for that jack too see that it conducts Use a multimeter or other appropriate equipment to measure conductance Measure at the outer ends of the EMI filter See the schematic for details on where to find the EMI filter for each jack Also check for bad solder joints or cracks in the PCB Display shows E7 This error code indicates that there are errors on the software in FLASH The problem can be cured by updating the software to the latest version The software is uploaded via MIDI with an update program that can be downloaded at www clavia se Follow the instructions as displayed by the program In some cases this might not cure the problem Some keys not working or one key trigs several notes This problem is most likely to occur if circuits U5 U12 and U29 on the main board are faulty Inspect them visually to see if any of them seem to be in bad condition Page 5 5 Am 29LV640DU 48 lead TSOP Am 29LV640DU 48 lead TSOP Us REE N N a s Byte A11 Vpen A12 A3 A14 A15 A16 A17 A18 A19 A20 A21 A22 DO D1 ee N U20 AD1865soic VO VD R30 200k Am 29LV640DU 48 lead TSOP Am 29LV640DU 48 lead TSOP E BD L2 80 p rose P hok 4 4 25 5V U10 5V EE tae T R23 E hok ETE 48 8 48 8 08 g 08 12 e 12 Lis SA20 Lis SA20 10 SD8 J T T m Ln 47 ay NS 32 Lin SA L
8. ecessary precautions against ESD before handling the circuit boards Opening the synth Keyboard version Loosen the screws as shown in the figure below Lift the front of the wooden ends to open the top Te The picture shows which screws that should be removed on a Nord Electro 73 key version For the 63 key version the two screws close to each other at the top of the picture does not exist Page 3 5 Rev 1 0 2005 06 10 Rack version Loosen the two screws on the back side and the two screws on the front side that holds the top to the chassis You can now lift off the top Removing the Power Supply Unit Loosen the five screws holding the PSU to the chassis Loosen the two screws on the back panel next to the AC inlet Finally remove the 10 pole ribbon cable connector and lift out the PSU Removing the Main Board Loosen the four screws holding the main board to the chassis Loosen the nuts and remove the washers around the 4 jacks on the back panel Also loosen the four screws holding the MIDI IN and OUT jacks to the chassis Remove the 26 pole ribbon cable connector to the panel board the 10 pole ribbon cable connector to the PSU and the two ribbon cable connectors to the keyboard You can now lift out the main board Removing the Panel Board Pull off all knobs on the front panel not the buttons Remove the ribbon cable connector from the panel board Loosen the last two screws holding the top to the chassis Loose
9. in SA EI WA rum rum 31 Soe pai S09 p i i4 i4 3 FE FE Ls 30A gav o8 LUE i EANN EE EE Hat SD2 ix Lr Als EET Nai 36 e rwr HERNAN 9 0A m Lu ie E wm f E os NT NM S m E E Ea 4 4 TP1 64 4 j Cm m m 45V gai TMS DE TRST ADO TIOO ACI ADO ACI TR SDIO SDI1 SDI2 SCKR FSR HCKR SDOO SDO1 SDO2 SCKT FST HCKT SDOO SDO1 SDO2 SCKT FST HCKT I 45 Bytest A11 Vpen A12 M3 A14 A15 A16 MODA MODB A17 MODC A18 MODD A19 nc A20 A RESET EXTAL A21 o power A22 grounds VCCP PCAP PINIT CLKOUT VCCP PCAP PINIT CLKOUT RESET EXTAL power grounds DO D1 C9 10u FS J3 NFM41R 2200p 74LVO8 4 ojc Vcc CS Vout3 3RDN INT WRN SUSP A0 DMREQ DMACK DO C15 10u F8 NFM41R 2200p J2 R52 c12 C13 _ C14 28 AGNDL TRIML 10k EOT Dt 7 O 1u 0 tu otu Lnd d EE Gled De i B0 AGNDL MSBL xL LF353 8 pin SO p b 9X C19 xj o OLKOUTD4 Dig svO 1 C8 i NAE coo 6G cei Meo 1K XTAL D5 F DA BC847 SOT2 8 FASBLEDUK il 2 12V412V A E E on 12 XTAL2 Rev history v0 99 v1 00 uc d ALE HO delete R65 RESET N T i Y2 changed to MA505 506 D2 d B 6 100p D3 BAV70 R75 9 R54 BC857 SOT23 BAV70 10 C53 10k 5V N P Q U27 POWER R56 Se SP705CU uSOIC CONNECTOR Q9 4 9 45V 43 3V R74 R63 pee NM ER 9 10k PFI BrO C 10k R61 MR WDO 10k lt RES gnd I 22k x 12V c24 R62 18 F13 NFM41R 470p 1 c25 10u i SN
10. n the nine screws holding the panel board to the top You can now lift out the panel board How to configure keyboard or rack version The model of a Nord Electro 61 73 rack 1s decided by two 0 zero ohm resistors R50 R51 found in the lower left corner of the panel board In order to reach the resistors the panel board needs to be detached If the panel board is not properly configured you get problems like High notes trig low notes or notes are trigged randomly Keyboard not working at all Buttons affect other parameters The configuration scheme is Zero ohm resistor in position Electro 61 Electro 73 Electro rack The picture to the right shows how a panel board for a Nord Electro 73 key version should be configured Page 4 5 Rev 1 0 2005 06 10 Updating the software The software version is briefly shown in the display when you power on the Nord Electro Electro 2 For more information on how to update the software visit http www clavia se Known or common errors Many of the errors that occur can be related to the improper use of the synthesizer Before it can be established that a hardware error has occurred check the manual and the FAQ on www clavia se for information In some cases an error can be cured by updating the software See www clavia se for more information on how to update the software If the possibility of a software error can be excluded check the following Is the fus
11. note on message from that key is H NN detected the display counts up one step When all keys ate pressed the test jumps forward aie to the next stage This test does not report velocity response Checking the pedal inputs Connect a sustain pedal to the sustain pedal input a switch pedal to the Rotor speed input W and a control or volume pedal to the Control pedal input Pressing and releasing the sustain x pedal should generate values 0 and 7F shown in the display This applies to the Rotor speed input as well Rocking the control pedal back and forth should generate values between 0 and 7F shown in the display For Yamaha control pedals you have to switch the tip and ring sionals for the pedal to work properly with the Electro 2 See this document http www clavia se nordelectro fc7_modification htm To make the test jump forward to the next stage unplug all pedals and then reconnect and unplug the control pedal Checking the DAC This test should output a clean sine wave on the left d1 and right d2 outputs Toggle the output with lt STORE gt Adjust the volume with the volume knob If the output is distorted try adjusting the trim pots found in the lower left corner of the main board r VR2 for left output VR1 for right with a non conductive ceramic screwdriver i oc J c ge C NO Un Rev 1 0 2005 06 10 Hardware structure The hardware is common for all three products one power supply
12. ts are shown on the Electro s display If a test is successful the display reads td If errors are detected en error code is shown in the display The error codes are listed under the section Error codes at the end of this document Page 1 5 Rev 1 0 2005 06 10 WARNING Improper use of the test program can result in malfunctioning of the synth It may only be used by qualified service personnel and is not intended for end users In order to execute the different tests on a Nord Electro 2 press and hold lt program 1 3 5 gt at power up All LEDs and the display should now be lit After finishing each test successfully the test program jumps forward to the next step The active test is shown in the display To toggle manually between tests press lt shift up gt or lt shift down gt Checking the LEDs and buttons Press all buttons to switch off the LEDs Once switched off they can not be switched on again without restarting the test Switching off all LEDs makes the test jump forward to the next stage Checking the knobs Turning a knob from fully counter clockwise to fully clockwise should generate a value between 0 and 7F respectively The value is shown in the display It should change linearly with the potentiometer travel Turning each knob fully counter clockwise to fully clockwise makes the test jump forward to the next stage Checking the keyboard Press one key at a time to check its function If a
13. unit one main board and one panel board Power Supply The Nord Electro is supplied internally with several different voltages These are 3 3 V 5 V and 412 V For more information on where to measure these voltages see the schematic for the power supply The fuse should be 300 mA for a 115 V and a 100 V supply and 125 mA for a 230 V supply Main board The main board is equipped with four DSPs U16 U19 which are controlled by a host processor U14 with two RAM circuits U9 U10 128k 8 bits each The code for the host processor is stored in an EPROM U17 OS and sampled sounds all sounds except organ are stored in four FLASH circuits U1 U4 4M 16 bits each Audio D A conversion is done by U20 A D conversion of the control pedal takes place on the panel board see schematic for details All input and output Jacks are filtered from radio signals with an EMI filter External jacks are a 26 pole connector for the panel board a 10 pole connector for the power supply unit and two keyboard connectors Panel Board On the panel board you will find all control functions of the Nord Electro It is also on the panel board that the model of the Nord Electro is hardware configured See section How to configure keyboard or rack version for details The panel board is connected to the main board with a 26 pole ribbon cable It is through this cable the panel board gets its current supply How to detach the circuit boards WARNING Take n
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