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1. Leos LED LED Leos 7 qi r PNP DIGITAL TR etc d k 3 s 204b 1048 648 O48 648 CLIP 6178 CNSA CN4B ere 7 4 NPN DIGITAL TR BAT A4M gt DIGITAL TR BAILS 6800 216 1 801 0260 LC LC2 0611106 56 22 2 1 LED AED CL 9HD s 3 GREEN GL 9EQ 3 5L1179 37H u 3 LEDIO PSK SKHHAJ KLM 1 04 GL 3HO 5 7 LEO LEDS TACT 5 3 b KLM 1506 08 MARK 1 NO DIODE 18 198133 e 2 VALUE CONDENSER IB 0 1 sf KLM 1 502 5 UNIT CHEMICAL CONDENSER 18 vF DX 288 308 103 NPN DIGITAL TR t 5 Jp BLO 2RH2 RG2Z 220 29 79H12 7 z 1 7 220 825 gii sv 2 C36 123 CN5A 155 CNSB 1123 Sele FANT 1507 cs 3 A7 LEVEL n 47 15 10K t6K UE 17 1O0dB evr ase is p 510 30 LPF 03 en MB y E G 33 4 70 10 1 2K PHI 10K 0 047 x CNI E 559 i AS gt AQ 47716 3 z 1 0K 4dB c W gt N E we X She 3 la 5 N 0 GUITAR IN Te A m 10 18 IK
2. KLM 1505 0009000000 Mast hfe D 5 2 3 099005000 vi 2 14A s O 000000000 od a pia 0000000000 CNSB 7 ES 1 7 0107095000 qw ho So 2 A f cuisp 730 2 cpm MEME qim E 9000060 0009009090 2 T w gt NE cas t donc eT 4 4 20099 A NN OS OO os H OEA ey 2 5 _ gt C c 000000000 0200900900900000000 uae Lebe deme DAI AIII EE N gas d ORK 2 50 4 00290900 00 7 7 009000 olo O G7 73 rer 9990200000 NO MOUNT PARTS SIDE KLM 1507 Y E EAS 2 F Coreg A 12701 SU TAN Papers acre exe N a SESE ONES 5 SB ERR KLM 1508 6 CIRCUIT EXPLANATION 1 The MPU section T
3. W 87 05 Gals MPU ADORESS DATA OUTPUT S H BYPASS E LPF ss 56 4 R RAM MDE 54KW MDE 1887 405 29 PEDAL Eu lt 128KB MIDI Lx MPU INTERFACE p RAM 18620 40 UPO78C10 32KB EDIT VOL FOR INVHOVIG 52018 E 4 CIRCUIT DIAGRAM KLM 1502 05 E 6 RAZ ci 11 cid 0 MPU I 2555 ORAM cow MIDI HI cos 7 A NEN xa ur d EN EN 23 ogie 1 us vle 2202 1119 i eID Elo Elo EE port sa un sa M Ol OOO Al 3 AG 014 Tamir wa a sa BQ F013 231 093 BI AE 3 f ES EN lu OUT THRU E ee tog 1192 Ao 9 98 8209141 i a SUR ODE 8 224 IH ES 18 ES WED 6 C HAS EER HR TAIN NN D e ens SCI 2 011 2 13 D 5 Sta 9119 MIDI 5 55 517 mos OUT Z THRU T c3 915 G2 01 co 012 ple 01 AN RX 220 ANO H3 Ca Ics 156 107 166 1 2 1 A YOO AVES VAREF YES
4. 464011901 464061301 250V T200MA CONNECTORS 471050500 TOP B5P VH 411060300 TOP B3B EH 471060400 TOP B4B EH 471060500 TOP B5B EH 471060600 6 471060700 TOP 7 471061100 471070300 471070800 471071000 B11B EH TOP B3B PH B8B PH TOP 10 471071200 TOP 8128 1 411090200 TOP 5096 02C BC CONNECTOR CARD FIT CONNECTORS 414012300 Z2C 112 1502 5 1 474012400 ZC 113 1502 5 de q SMCD CONNECTORS 474012500 FC 12 1 6 414012600 FC 13 1 6 1502 5 1 LV CONNECTOR PARTS CODE PARTS NAME IDENTIFICATION NO Q TY SPECIFICATIONS BOARD FUNCTION HEADER HARNESSES 475001556 HNS 1556 M PRT 1 475001557 HNS 1557 1506 BOARD IN 1 475001558 HNS 1558 1506 BOARD IN 1 475001559 HNS 1558 1506 BOARD IN l 475001560 HNS 1560 1506 BOARD IN 1 475001561 HNS 1561 1502 5 BOARD IN l 415001562 HNS 1582 1502 5 IN 1 415001563 HNS 1563 M PRT 1 475001564 HNS 1564 1502 5 1 475001565 HNS 1565 M PRT 1 475001566 ENS 1566 1502 5 BOARD IN 1 475001567 HNS 1557 1507 8 BOARD IN l 475001568 HNS 1568 1507 8 BOARD IN 1 475001569 HNS 1569 1502 5 BOARD IN i IC SOCKET FUSE HOLDER LITHIC BATTERY BUSHINGS 540000300 PRT 940000400 94
5. MPU UPD78C10ACW PIN ASSIGNMENT PAO 4 5 PAG 1 PB3 PB4 P85 PB6 7 PC 0 TxD PC 1 R D PC 2 SCK PC 3 INY2 PC4 TO PCS CI 6 00 7 1 NMI INT MODE 1 RESET MODE 0 X2 x1 Vss 1 2 3 4 5 6 7 8 9 e e e e e e UJ LJ e J MPU UPD78C10ACW PIN FUNCTION CHORE en Serial Clock EE PC3 EN Interrupt Request PC4 5 Timer Output PCS Counter Input PC6 7 Ex Counter Outout 0 1 1 0 Address Data Bus AB15 8 mn Address Bus wn s ses fe ng jo Address Latch Enable ADT 0 21 e Voo O STOP PD O PD6 O PDS 4 PD2 1 PDO PF 6 PFS 4 PF PFO ALE WR RD AV pp VAREF 6 5 4 AN3 AN2 1 ANO E EZR Dm mm opem x gt gt we mT FOR HARNESSES 15 90 5195 05 HNS 1556 e 4 CN 4B 6 8525 6 HNS 1557 220 pe 7 7 CN5B 7 8525 7 ANS HNS 1560 22 CN 8A HNS 1561 CN 9A nos toe eso fe CN 10A CN 10B _HNS 1563 A M CN 11A HNS 1504 23 100 3 lt eni E 1 2
6. SERVICE MANUAL CONTENTS niri 1 Ts SPECIFICATION 2 STRUCTURAL DIAGRAM 2 3 BLOCK DIAGRAM 3 8 4 CIRCUIT DIAGRAM 3 b 3 c S P C BOARDS 4 6 CIRCUIT EXPLANATION 8 7 CHECK AND ADJUSTMENT 10 SIC CHECK POINT em t ond 16 9 REFERENCE DATA PAIS 4 19 gt e V gt 4 j b e 1 SPECIFICATION li Front panel input FRONT GUITAR IN fixed at 20dB 5dBm 1 Q Back panel input Input level impedance 4dB 19dBm 50 Q 1008 5dBm 50 Q Back panel output Output level impedance 408 19dBm 470 O 1008 5dBm 470 Q Headphone out impedance over 10 2 AD DA 16 bit linear DA 4 times over sampling digital filter Sampling frequency 37 1KHz lll Frequency response 24Hz 18KHz 1 5 3dB Dynamic range 90dB Memory No 1 100 No 1 200 when using card Front panel KEY SW UP DOWN DISPLAY SELECT PARAMETER EDIT UTILITY WRITE POWER SW DOUBLE FUNCTION EDITOR A CHAIN EFFECT BYPASS Display Backlit LCD display 40 characters X 1 row PROGRAM display 7 segment LED 3 Dot type LEDs PERFORMANCE INDIVIDUAL BYPASS PARA
7. a L MONO R1 tN 1 a R2 1000 7 1 aa q IK 42 16 e INPUT SE as RIO 3 52031 at ICi Te CX20018 6K 10 16 BP Rae E INPUT LE fa 10 16 10 18 DEE c14 NUM R HZ9 BBIL 10 16 204 206880 201 5 793 581 nee 25 i 1 1 1 KL 506 i cs RS 100 3 47K Map i R50 8 aso R1 10K i E RR e 2 L a 7 4 DATA nOs083 I 4 dB 10 16 470 3 BRK 4 7K 47 PAS 8 aeons 3 k 2K 10 C61 IGI PHONES A 100 7K i NN aD 55 28 R67 0 i 1 DIO GND 0 i i R74 i a 9 1 OOK 100 16 10 0 OUTPUT b 1 I 7 5 5 10 o 5215 PHONES LEVEL 595 T i BP R7 L3 R73 10 16 470 ALY a 7 H p R MR62 1 28A Ead bes EE Na GND x STE ANA GN 1011 2 1 159 css R69 gt R70 100 1010 1 3 206880 0 003 PCNSSP HC4053 a 1 1 1 i B CN18A Pa END ori 7 06 1 TODOS ASI 3 KLM 15 MA6E 198R RL YI KLM 1506B Tes HH nes ae br 01 N wert 2 no E l 5 7 nud 3 Ape SCSI 7
8. rT a a 252 1 30 gt gt gt gt gt gt gt gt gt PC9 OK REMOTE oooocogoo 14 16 648 x2 75C OACWV 1 2 CDBT BATT R52 COST th 1023 R36 30 n8520140 2 2K 1017 22 PEDAL M o Tes ETT 1 x1 TOR t9 PH LOR 10K 4 6 4 255 DRAM 4 4 23 2 T 9 716 Hesse 3 PEDALI 4 6 HCO 4 A 5 el 14 07 L N 13 08 K 19 05 L CNZA VY enoa 3 2 242 204009000 DO O 19345 CN7B 123 8 4 P T IIO T ERN A5 1 m m 3 vEE VDD CNIBA E 4 LLI IT 007 8 EU HH BER Tap KLM 1506 10716 NEL 032 46 TAT Lez 2 TC 031 KBLOZL MARIS 8176 CNSA CN5B lt gt 1 5 7 Rew FUSE RESISTOR 3 2200 os 2 UNIT OF CHEMICAL CAPACITOR 46 POWER ND m ND 23 3 NAME DIODE IB 188133 E 2200 ISV 1 4 VALUE CONDENSER O 1 F r 1 50 5 KLM 0895306 19 D83306 93FZ 103N 100 A 1 Loe 505 5 17 peeses tow 088306 998 voin 100 4
9. NC PHR 3 1 HNS 1569 24 SZ PARTS CODE PARTS NAME C IDENTIFICATION NO PARTS CODE PARTS NAME C IDENTIFICATION NO SPECIFICATIONS FUNCTION SPECIFICATIONS FUNCTION P C BOARD ASSEMBLE FET 001150200 1502 05 1502 5 1 306000600 25 152 3 1506 001150500 KLK 1506 1506 001150700 KLM 1507 08 1507 8 DIODES BLOCK RESISTORS 310002100 SRIM 2 314001300 155 133 139010001 RGLD2Y220J 220HM 139010002 8681 0 103 10K 139010003 RGLE4x103J 10K j BRIDGE DIODE 139010004 RGLE7x103J 139010005 RGLE8x103J 310011000 KBLO2L 6176 1502 5 LC FILTER LEDs 68 312007800 1506 5132420 219051300 312008200 SL 1179 37H RED AC LINE FILTER 312008700 GL 9HD22 312008800 GL 9EG22 FILTERS 313001700 LU3138 40 x 1 M PART 219401000 DSS306 93FZ103N100 ZENER DIODES 219401100 055306 938101 1 00 314024300 HZS 6BIL TD BLOCK CAPACITOR 314024400 2 5 1 PPCs 315000400 KC932 T12 1502 5 260002547 100V 0 047UF 1507 8 ICs 260003368 100V 680PF 1506 320001068 0 0 TRANSISTORS 320001095 UPD74HC174C 320001097 UPD74HCO4C 304020070 25 2785 1502 5 320001101 UPD74HCO8C 304020100 BA1A4M T 1502 5 320001128 UPD43256C 15L 1506 320001151 UPD74HC4053 1507 8 320001193 00 7 304020110 BNIA4M T 1502 5 320001269 UPD74HC4052C 304020220 BALL4H T 1502 5 320009057 NJM7805FA 151 5180990 OL N PARTS CODE PARTS NAME P C SPECIFICATIONS BOARD IDENTIFICATION NO F
10. in the LCD REMOTE OUT X IN You need a short plug DIN plug whose pin and 4 pin 3 pin and 9 pin are short circuits If the short plug is not available press the WRITE SW and proceed to the next check Card battery check The battery of the RAM card into the card slot is checked When this check passes the item proceeds to the next automatically When this check fails all the LEDs go on and off and the letter Err is indicated in the LED display Then when no RAM card is inserted into the card slot or a ROM card is inserted into it the following is indicated in the LCD CARD WRITE READ xx When the battery voltage of the RAM card is low the following is indicated in the LCD CARD gt CARD Battery Low xx Internal battery check The battery voltage of the A2 is checked When this check passes the item proceeds to the next automatically When this check fails all the LEDs go on and off and the letter Err is indicated in the LED display Then the following is indicated in the LCD INT BATT gt Internal Battery Low xx 11 2 A D LEVEL CONFIRMATION AND ADJUSTMENT When the INTERNAL CHECK is finished the item proceeds to the A D LEVEL CONFIRMATION AND ADJUSTMENT automatically 1 L ch A D level confirmation and adjustment A D LEVL Lch Checking 1 Input the sin wave of 1Vp p 40082 to the LINE IN L MONO terminal of the rear panel 2 Connect an os
11. sve jo W R33 dE gt X Axe Ae s M1 86 e ee MF SSS NS e ee 1 i r O R LE SE p y E ma M zx ETT CE PES uu RS N ais A 4 20 fall m 3 8 9 IRE gt ml QUE ES 13 62 N EC EE gt GC3 SRD ee 5084908 24 S KLM 1502 05 E DEEN 80084 2008 REPLACE WITH SAME TYPE FUSE 9 3 0 CD oto 8 3 KLM 1 o je cie a 5 1 5 5 1 A 7 92 En 2 lt s ATTENTION n UTILISER UN E OS FUSIBLE DE RECHANGE DE KLM 1504 a aq I I ul 000000 241 ME nt i ai i Fin 5 EAT YU c9 G Wo 5 o 9925 gt SE 3 Ss pie 1 52999 02030 CITI Dol 8 91 ble lt o ST lo did 4 9 0 01210 q Oo G G 6690 MOUNT PARTS SIDE KLM 1502 05 2 o000090000 ape
12. 0000500 IDENTIFICATION NO SPECIFICATIONS LC 2 G YELLOW SMCD HARNESSES 12x140ESx10 1502 5 12x340ESx10 1502 5 0 25 7 LED SPACERS LS 15 4 L 4mm AC CORDS CLASS SU429 58 8c SAA SU428 58 BS PLUG SU431458 SEV SU430 58 SJT SU338 56 re NN pt PARTS NAME C IDENTIFICATION NO SPECIFICATIONS BOARD FUNCTION KNOB 630010100 PRT 11705 1 22070 1 LCD WINDOW CARD GUIDE PARTS CODE 6c IDENTIFICATION NO FUNCTION PARTS NAME SPECIFICATIONS PARTS CODE FRONT PANEL REAR PANEL VE SHIELD RACK MOUNT ADAPTOR SPRING PLATE 644003000 M PRT 11705 3 2 6 PSY FRAME CT HOOD BATTERY HOLDER VAROITUS Paristo voi r j ht jos se on virheellisesti asennettu Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin H vit k ytetty paristo valmistajan ohjeiden mukaisesti ADVARSEL Lithiumbatteri Eksplosionsfare ved fejlagtig handtering Udskiftning m kun ske med batteri af samme fabrikat og type Lev r det brugte batteri tilbage til leverand ren ADVERSEL Lithiumbatteri Eksplosjonsfare Ved utskifting benyttes kun batteri som anbefalt av apparatfabrikanten Brukt batteri returneres apparatlev
13. METER EDIT UTILITY Input level 5 element level meter with digital clip INPUT VOLUME PHONES LEVEL CARD slot GUITAR IN terminal PHONES terminal stereo Rear panel Switches level attenuation switch 10dB 4dB MIDI OUT THRU toggling switch LINE IN terminal 2 L MONO R OUT PUT terminal x 2 L MONO R PEDAL SW input terminal X 2 MIDI IN MIDI OUT THRU REMOTE IN Internal effects REVERB GROUP COMPRESSOR GROUP DISTORTION GROUP DELAY GROUP STEREO DELAY GROUP MODULATION DELAY GROUP MODULATION GROUP ROTARY SPEAKER GROUP PAN GROUP PARAMETRIC EQUALIZER PITCH SHIFTER GROUP EXCITER GROUP ENSEMBLE GROUP PHASER GROUP 3 BAND EQUALIZER SPEAKER SIMULATION GROUP PEDAL PAN GATE PEDAL WAH EARLY REFLECTION HARD DISTORTION GROUP AUTO WAH GROUP SPACE PHASER GROUP MULTI TAP DELAY GROUP LONG DELAY GROUP TEMPO DELAY DYNAMIC MODULATION GROUP 4CH MIXER GATE GROUP LIMITTER BAND CHORUS GROUP STEREO EXCITER COMP LIMITTER SUPER DISTORTION GROUP HARD DISTORTION GROUP NEW BAND EQUALIZER MULTI TAP CHORUS REVERB GROUP DRIVER ROTARY SPEAKER Il MODULATION GROUP STEREO COMP LIMITTER LEFT STEREO COMP LIMITTER RIGHT STEREO PITCH SHIFTER DELAY GROUP SPECIAL REVERB GROUP Power consumption 26 W ll Dimensions 482 W x 332 5 D x 44 H mm 19 x 12 15 16 x 1 3 4 Weight 4 5 kg albs 147202 Optional accessories VOLUME PEDAL KVP 001 FOOT SWITCH PS 1
14. PS 2 REMOTE CABLE RCC 050 RCC 100 FOOT CONTROLLER FC6 RAM CARD MCR 03 only ROM CARD SPC 01 Specifications are subject to change without notice G gt gt Qno gt LOWER CASE REAR PANEL COVER FRONT PANEL PSW BAR FIO PLATE RACK MOUNT ADAPTOR PS SUPPORT NAWE PLATE CT HOOD LCD WINDOW KNOB SMALL POWER S KNOB PSW FRAME ISOLATION SHEET CARD GUIDE PUSH S KNOB 4093 1 BUSHING AC CORD SPIRAL CLIP 15 LCD LU3138 40 x 1 POWER TRANSFORMER TC 031 HEAT SINK RUBBER FOOT ISOLATION TAPE P C BOARD KLN 1502 BOARD KLM 1504 BOARD 4 329 BOARD 1505 BOARD KLH 1506 BOARD KLM 1507 BOARD KLH 1508 n Na IM IM MM Ce e a A AA MAIN BOARD PANEL BOARD VR BOARD REGULATOR BOARD ANALOG BOARD INPUT BOARD HEADPHONE BOARD PART CODE IVYNLINULS 7 640096500 641018500 640096600 641018300 640096800 640096900 641020000 640096700 646030500 530014200 520020900 620018200 646030200 630007500 640088500 620020800 313001700 400011700 560005700 900013000 001150200 001150200 001150200 001150200 001150600 001150700 001150700 LINE GUITAR INPUT L 7 R 01 REMOTE CARD INTERFACE RAM 66 0
15. SW gt Push WRITE 1 The turn to press is as follows WRITE PARAM EDIT UTILITY DISPLAY SELECT When this check is finished the item proceeds to the next check automatically 13 4 D F E check When the D F E which is indicated in the LCD is pressed once the name of the E which is being pressed and the A D value are indicated in the LCD Also confirm the A D value changes between 0 and 255 when this is turned eg D F E Push BYPASS 252 next SW push SW A D When this check is finished press the WRITE SW to proceed to the next check 5 Pedal check Connect the volume pedal KVP 001 to the PEDAL SW 1 and 2 terminal of the rear panel Set the slide VR of the KVP 001 to be 0 1 Pedal 1 check Confirm the A D value changes between 0 and 255 the MIDI data changes between 0 and 127 when the KVP 001 is operated at the condition that the letter PEDAL is indicated in the LCD 5 PEDAL PEDAL 1 208 127 A D MIDI DATA When this check is finished press the WRITE SW to proceed to the next check 2 Pedal 2 check Check as well as 1 When this check is finished press the WRITE SW to proceed to the next check 14 4 MDE CHECK Connect an oscilloscope to the OUTPUT L MONO terminal of the rear panel 1 MDE 1 C15 check MDE Checking The wavefor
16. UNCTION Q 320009078 NJM78MIZFA 1506 1 320009079 NJMT9M12FA 1506 1 320009080 NJMT9MOSFA 1502 5 1506 1 320009085 NJM2068SD 1506 5 1507 8 1 320010003 CX20018 1506 A D CONVERTER 1 320011026 216 5 1507 8 1 320011076 M5238L 1506 3 320011113 MSM4464AL 10 1502 5 DRAM 10 320011128 M62021P 1502 5 RESET l 320011129 1852031 1507 8 2 320012052 87405 1502 5 MDE 2 320012064 NB620140PF 1502 5 CPUCor MDE I F 2 320012081 27 1000 202 6 1502 5 ROM 1 320013034 2 19 1502 5 LED DRIVER 1 320016001 0029 1502 5 DIGITAL FILTER 1 320036004 PCM56P 1506 D A CONVERTER 1 PHOTO COUPLER COIL SB COIL CRYSTAL OSCILLATORS 335005700 335005800 HC 49 U 60MHz AT 49 72 335005900 HC 49 U 38MHz SEMI FIXED VR 350002258 10815 6 1506 362005300 10KB x 2 1507 8 362005400 1 1502 5 eal PARTS CODE PARTS NAME IDENTIFICATION NO SPECIFICATIONS BOARD FUNCTION 402002300 BLO2RN2 R62 1507 8 1506 402002400 NEL D32 46 1502 5 454006700 YKF51 5014A PHONE JACKS 454007900 YKB21 5176 1506 454008000 YKB21 5138 1502 5 1507 8 FUSES 464011901 250V 0 8A UL M PRT 117CN 117US LC e 3 mes IDENTIFICATION NO FUNCTION PARTS NAME SPECIFICATIONS PARTS CODE 250 0 UL
17. cilloscope to the OUTPUT L MONO terminal of the rear panel and adjust the output waveform to 40mVp p with the master VR of the front panel 3 Confirm the output waveform transforms the normal sin wave f it is not so adjust with the of KLM 1506 When this check is finished press the WRITE SW to proceed to the next check 2 R ch A D level confirmation and adjustment A D LEVL Rch Checking 1 Connect an oscilloscope to the OUTPUT R terminal of the rear panel and adjust the output waveform to 40mVp p with the master VR of the front panel 2 Confirm the output waveform transforms the normal sin wave If it iS not so adjust with the VR2 of KLM 1506 NG GOOD X If this adjustment is not its proper position the noise will be much bigger 12 3 LED LCD SW D F E AND PEDAL CHECKS 1 LED check The LEDs of the front panel light automatically on this check LED Checking The turn to light is as follows UTILITY PRAM EDIT PERFORM gt INDIVID BYPASS 7 SEGMENT LED Confirm all the LEDs light When all the LEDs go out the item proceeds to the next check automatically 2 LCD check When the WRITE SW is pressed once all the dots of the LCD are indicated Confirm this LCD When this check is finished press the WRITE SW to proceed to the next check 3 Panel SW check Press the switch indicated in the LCD to check it eg PANEL
18. en the power is turned on while CHAIN EFFECT are being pressed this diagnostic test Self Test Program starts The explanation of the operation switches on the diagnostic test WRITE switch The check proceeds to the next switch The item proceeds to the next switch The item returns to the previous one BYPASS switch The diagnostic test mode returns to the normal mode Regarding the PARAMETER INITIALIZE When the diagnostic test starts normally the screen of the PARAMETER INITIALIZE is indicated PARAMETER INITIALIZE YES NO Press YES E if you would like to initialize the internal data of the A2 or press NO C F if you don t want do that 1 INTERNAL CHECK When the PARAMETER INITIALIZE is finished the item proceeds to the INTERNAL CHECK automatically 1 MIDI circuit check The MIDI IN OUT is checked When this check passes the item proceeds to the next automatically When this check fails all the LEDs go on and off and the letter Err is indicated in the LED display Then the following is indicated in the LCD MIDI OUTS X IN 10 2 Remote circuit check 3 4 The remote terminal circuit is checked When this check passes the item proceeds to the next automatically 9 When this check fails all the LEDs go on and off and the letter Err is indicated in the LED display Then the following is indicated
19. erand g ren VAHNING Explosionsfara vid felaktigt batteribyte Anvand samma batterityp eller en ekvivalent typ som rekommenderas av apparattillverkaren Kassera anvant batteri enligt fabrikantens instruktion CAUTION Danger of explosion if battery is incorrectly replaced Replace only with the same or equivalent type recommended by the equipment manufacturer Discard used batteries according to manufacturer s instructions INC 15 12 Shimotakaido 1 chome Suginami ku Tokyo 168 KORG INC 1991 0301 CEH PRINTED IN JAPAN 1
20. he MPU uses UPD78C10 and processes the following The port of the MPU are indicated in the parentheses 1 2 3 4 5 6 7 2 The The control of the LCD unit PA5 7 PBO 7 The LCD are controlled by using a part of the Port A and the Port B The bank change of the memory area PA3 4 The bank of the memory and the 1 0 is changed by using a part of the Port A The 1 0 reset PC6 The MDE MB87405 and the MDE I F MB620140 are reset The detection of the card CDST The existence of the card are detected by using this port If the card is not inserted HIGH If the card is inserted LOW The multiplexer control 4 The multiplexer HC4052 IC2 are controlled in the KLM 1503 MIDI 1 0 PCO 1 D A D The A D convertor in the MPU are used and the A D conversion of the following data are carried out PEDAL SW 1 2 C 406 7 CARD BATTERY AN3 INTERNAL BATTERY AN2 EDIT VR CHAIN EFFECT D VR C AN A C E VR MPU I F Section The MPU I F MB620140 is the LSI to be the interface of the MPU and each I 0 and the main functions are as follows 1 Address Latch ADO 7 This latchs the lower 8 bit of the address bus of the MPU with the timing of the ALE terminal 2 3 4 5 6 7 LED Control LL0 3 LED1 7 This IC receives the data from the MPU and puts the LED on Bank Change Input P0 2 This IC recei
21. m which is oscillated only from the MDE 1 IC15 internally is transmitted Confirm that the following waveform can be monitored on the oscilloscope Fig l MDE Test Waveform When this check is finished press the WRITE SW to proceed to the next check 2 MDE 2 IC16 check MDE gt MDEO Checking Check as well as 2 When this check is finished press the D F E BYPASS SW to return to the normal mode Regarding the check item of the diagnostic test We don t mention anything about the checks after the MDE check because they are for the inspection at the factory and because an audio analyzer etc are needed 8 IC CHECK POINT UPD78C10CW MPU PC3 PC2 UV V i Um AT dM m 2 1 9 div 2V 2uS div PC6 4 0 d 0 0 B8mS ess div POWER ON 0029 FILTER SHL SHR WOUT y BY lt 6 us 54 2546 OV 2uS div OV LuS div DOUT OV PV PuS div When a sound is received the pulse changes CX20018 ADC 0 3 5V OMS de 2V 1DuS div BCLK OV r 2 02085 div TEST POINT TPI 01 06 E SH1 2 OV 4V 1 i eua q 2V 10uS div DIN QV PV 5uS div When a sound is received the pulse changes When the level of this waveform has the large difference the noise is generated In this case please adju
22. st with the VR 1 and 2 MB620140 MDE I F 500K IN BCLK i 2 i GUS 2 0 5115 div 2V 0 245 div SX32A B LRCK OV QV 1 0 805 2705 2 0 08 div 2V mS div SX1A B DOO 15 OV E A OV efus 2 08 div 2V 10uS div When the internal noise gate works the data is fixed SHO 2 miu 0081 242 1045 div 9 REFERENCE DATA MB620140 CPU INTERFACE PIN ASSIGNMENT MB620140 CPU INTERFACE PIN FUNCTION 2 ea on Ce 34 170 13 EE 777 mis um m mo o E EG 9 DOCAS E gt 7 s ieee 8 12 ee eae pipe bette er TONES 19 MB620140 MDE INTERFACE PIN ASSIGNMENT Jo MB620140 MDE INTERFACE PIN FUNCTION EM 1 E DORA MeL rae pole opel oe sls Cr ML p
23. ves the bank change signal and controls the ROA 14 and each CE output SW Data Input SW1 7 This IC is the input port to transmit the SW data to the MPU Address Output 40 7 This IC transmits the latched time division address bus CARD 1 0 CAA CAD The address bus for the card and the data bus for the card CE Output Each memory the CE output terminal for the 1 0 3 The MDE I F section The MDE I F MB820140 is the LSI to be the interface between the A D convertor and the D A convertor This also transmits and receives the remote signal for the FC6 1 2 3 The interface with the A D convertor CC DIN This IC converts the serial data of CX 20018 into the parallel data and transmits to the MDEO The CC terminal transmits 37 1 KHz and the BCK transmits 1 188 MHz The interface with the D A convertor DATAO 192FS LRCK BCLK This converts the parallel data from the MDE to the serial data and transmits to the digital filter PD0028 The remote 1 0 lt RX TX When the data is received from the 1 0 terminal for the 06 this IC transmits the interruption signal to the MPU 7 CHECK AND ADJUSTMENT Before you Start the diagnostic test If necessary data are memorized in the 2 please save the data into the RAM card before starting the test Starting the diagnostic test Connect the MIDI cable to the MIDI IN and OUT of the rear panel Insert a RAM card MCR 03 into the card slot Wh

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