Akai-AX60-pps-sm 电路图 维修手册.pdf

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1、PROGRAMMABLE POLYPHONIC SYNTHESIZER MODEL AXOO SECTION 1 SERVICE MANUAL SECTION 2 PARTS LIST SECTION 3 SCHEMATIC DIAGRAM SECTION 4 SERVICE BULLETIN RadioFans.CN 收音机爱 好者资料库 ABBREVIATIONS FOR THE SERVICE MANUAL RadioFans.CN 收音机爱 好者资料库 SAFETY INSTRUCTION SAFETY CHECK AFTER SERVICING Confirm the specifi

2、ed insulation resistance between power cord plug prongs and externally exposed parts of the set is greater than 10 Mohms, but for equipment with external antenna terminals (tuner, receiver, etc.) and is intended for C or ai specified insulation resistance should be more than 2.2 Mohms (ground termin

3、als, microphone jacks, headphone jacks, line-in-out jacks etc.) PRECAUTIONS DURING SERVICING 1. 2. 4. Parts identified by the A symbol parts are critical for safety. Replace only with parts number specified. In addition to safety, other parts and assemblies are specified for conformance with such re

4、gulations as those applying to spurious radiation. These must also be replaced only with specified replacements. Examples: RF .converters, tuner units, antenna selector switches, RF cables, noise blocking capacitors, noise blocking filters, etc. Use specified internal wiring. Note especially: 1) Wir

5、es covered with PVC tubing 2) Double insulated wires 3) High voltage leads Use specified insulating materials for hazardous live parts. Note especially: 1) Insulation Tape 2) PVC tubing 3) Spacers (Insulating Barriers) 4) Insulation sheets for transistors 5) Plastic screws for fixing microswitch (es

6、pecially in turntable) When replacing AC primary side components (transformers, power cords, noise blocking capacitors, etc.), wrap ends of wires securely about the terminals before soldering. 6. Observe that wires do not contact heat producing parts (heatsinks, oxide metal film resistors, fusible r

7、esistors, etc.). 7. Check that replaced wires do not contact sharp edged or pointed parts. 8. Also check areas surrounding repaired locations. 9. Use care that foreign objects (screws, solder droplets, etc.) do not remain inside the set. 10. The LITHIUM BATTERY employed for memory back up has an exp

8、losive probability when the battery itself is excessive heated. Normally, LITHIUM BATTERY is not necessary to replace, because the life of LITHIUM BATTERY is about 10 years. IN CASE OF REPLACING: RESOLDER AND SOLDER AS RECOMMENDED WAY. Recommended way VOLTAGE CONVERSION Models for Canada, USA and Ja

9、pan are not equipped with this facility. Each machine is preset at the factory according to its destination, but some machines can be set to 220V or 240V as required. If the machines Voltage can be converted: Before connecting the power cord, set the VOLTAGE SELECTOR on the bottom panel for the corr

10、ect Voltage is in dicated. VOLTAGE SELECTOR -SERVICE MANUAL- RadioFans.CN 收音机爱 好者资料库 SECTION 1 SERVICE MANUAL TABLE OF CONTENTS I. SPECIFICATIONS 4 II. DISMANTLING OF UNIT 5 1. HOW TO OPEN THE FRONT PANEL 5 2. HOW TO DISMANTLE THE KEYBOARD 5 3. HOW TO DISMANTLE THE BEND PANEL BLOCK 5 III. CONTROLS 6

11、 IV. THE KEYBOARD REACTION-SHIP TO EQUALLY TEMPERED SCALE FREQUENCIES AND MUSICAL-NOTATION 7 V. PRINCIPAL PARTS LOCATION 7 VI. ADJUSTMENT 8 1. BALANCE OF 6V ON THE POWER SUPPLY PC BOARD 8 2. OFF-SET OF FINAL VCA ON THE VOICE PC BOARD 8 3. BALANCE OF BBD OUTPUT ON THE CHORUS PC BOARD 9 4. OFF-SET OF

12、IC6 (LF 356) ON THE CPU PC BOARD 9 VII. PC BOARD TITLES AND IDENTIFICATION NUMBERS 10 VIII. MIDI IMPLEMENTATION CHART 10 This Mannal is FOR INTERNAL USE ONLY and most not be made available to unauthorized personal. No part of this manual may be re produced in any form without permission from AKAI-EL

13、ECTRIC CO., LTD., Tokyo, Japan. -SERVICE MANUAL- I. SPECIFICATIONS MODEL AX60 -SERVICE MANUAL- 2-2. HOW TO DISMANTLE THE KEYBOARD (Refer to Fig. 2-2 and Fig. 2-3) 1) Remove 6 screws on the Bottom plate, and disconnect the connectors PI and P2 on the CPU PC Board. FOR THE KEYBOARD SCREWS * For improv

14、ement purposes, specifications and design are subject to change without prior notice. II. DISMANTLING OF UNIT FOR THE KEYBOARD FOR THE BEND PANEL BLK In case of trouble, etc. necessitating dismantling, please dismantle in the order shown in the photographs. Reassemble in reverse order. 2-1. HOW TO O

15、PEN THE FRONT PANEL (Refer to Fig. 2-1) 1) Remove 8 screws as shown Fig. 2-1, and open the Front Panel as shown Fig. 2-3. Fig. 2-2 2-3. HOW TO DISMANTLE THE BEND PANEL BLOCK (Refer to Fig. 2-2 and Fig. 2-3) 1) Remove 6 screws as shown Fig. 2-2 and Fig. 2-3, and disconnect the connectors P4, P5 on th

16、e CPU PC Board and PI on the OPERATION (B) PC Board. PI P5 P4 P2 PI SCREWS SCREWS FOR THE BEND BLK DISCONNECT PI 8 P2 (ON THE CPU PCB), WHEN DISMANTLING THE KEYBOARD. DISCONNECT P4 8 P5 (ON THE CPU PCB), AND PI (ON THE OPERATION(B) PCB), WHEN DISMANTLING THE BEND PANEL BLK. Fig. 2-1 SERVICE MANUAL-

17、Fig. 2-3 III. CONTROLS LFO PARAMETER SET-UP KNOBS DEPTH: Sets the modulation intensity SPEED: Sets the modulation frequency. DELAY: Sets the amount of time for the modulation to start after pressing a Key. LFO SELECT BUTTON and INDICATORS- To select destinations of LFO effect. LFO WAVEFORM SELECT BU

18、TTON and IN DICATORS CHORUS (1/2/OFF) SELECT - BUTTON and INDICATORS To select chorus effects or off ARPEGGIO MODE SELECT BUTTONS and INDICATORS MODE: To Select UP*, DOWN, UP and DOWN. HOLD: To Hotd an arpeggiated figure. ON/OFF: To turn on or off the arpeggiation effect or function. In whole mode,

19、the entire keyboard is arpeggiated. In 0-6 Split mode, arpeggiation af fects the upper split only. In 2-4. 4-2 and 6-0 split modes, arpeggia tion affects the lower split only. OCTAVE SELECT BUTTON and INDICA TORS To set the basic octave range of the key board between 2 (highest range) and 32 (lowest

20、 range). VCO PARAMETER SET-UP KNOBS PJLSE WIDTH: Acts tike a tone control that changes the timbre of each waveform. SEED: Controls an LFO frequency that changes the width automatically E DEPTH: AVCO) -B (NOISE/SAMPLER) EUANCE CONTROL KNOB v:f parameter setup knobs GTT OFF FREQ: To Set a cut off freq

21、uency oftheVCF(LPF). RESONANCE: To boosts the Amplitude of frequencies near the cut off frequency setting. ICY FOLLOW: To change the cut off fre quency according to the key played (higher or lower note) to maintain the same timbre. CO MOD: To produce musically useful timbre shifts. I-PF: To set a cu

22、t off frequency of the high pass filter. ARPEGGIO SPEED CONTROL KNOB MASTER LEVEL CONTROL SPUT BALANCE LEVEL CONTROL UNISON MODE SELECT BUTTON and INDICATORS AUTO TUNE BUTTON- WHEEL UPPER/LOWER SELECT BUTTON and INDICATORS EG POLARITY SELECT BUTTON and IN DICATORS EG ASSIGNMENT/SELECTION BUTTONS and

23、 INDICATORS EG PARAMETER SET-UP KNOBS ATTCK: DECAY: SUSTAIN: RELEASE: NOISE and SAMPLE! I INPUT CONTROL BUTTONS NUMERIC DISPLAY SPLIT MODE ON/OFF BUTTON VCO WAVEFORM SELECT BUTTON and INDICATORS PINCH BEND DEPTH CONTROL KNOB Sets the amount of pitch change. PITCH BEND WHEEL To change the pitch CUT O

24、FF FREQUENCY CONTROL KNOB MODULATION WHEEL The modulation wheel has no effect when it rotated to MINI direction, add modulation when it rotated to MAX direction. Sets the amount of time (T1). Sets the amount of time (T2). Sets the level. Sets the amount of time (T3) after a key is released. DEPTH LE

25、VEL: Sets the overall amplitude of the maximum deflection and also the sustain level. PROGRAM SELECT BUTTON To select the Bank and Preset Number. To Select Tape Interface. To Sets MIDI channels. To Sets and Select Split preset SPUT MODE SELECT BUTTON and INDI CATORS COMPERE/EDIT RECAUJKEY TRANS SELE

26、CT BUTTONS and INDICATORS -WRITE BUTTON -CASSETTE INTERFACE SELECT BUTTON Fig. 3-1 -SERVICE MANUAL- IV. THE KEYBOARD REACTION-SHIP TO EQUALLY TEMPERED SCALE FREQUENCIES AND MUSICAL-NOTATION. -Piano keyboard - oeofE mil ii? e?1 PfffTtTT CoD oo ico oo i i-* .-* n m ii in y!it in i m in ii mi ii i ii K

27、eyboard Coverage by Frequency Range Setting 32 16 8 4 2 Piano Co-Cs C.-Ce C2-C7 Cj-Ca C4-C9 V-PRINCIPAL PARTS LOCATION Fig. 4-1 CHORUS PCB LIOI2B5O3O OPERATION (B) PCB LIOI2A5O6O OPERATION(A) PCB LI0I2A5040 POWER TRANSFORMER POWER SUPPLY PCB LI0I2BS050 FILTER PCB L600I05080 Fig. 5-1 -SERVICE MANUAL-

28、 VI. ADJUSTMENT 6-1. BALANCE OF 6V ON THE POWER SUPPLY PC BOARD 1) Connect a Digital DC Voltmeter between Pin T (+6V) and Pin 0 (GND) of connector P4 on the POWER SUPPLY PCB as shown Fig. 6-1. 2) Read the + Voltage Value at the Pin T|, and connect a Fig. 6-1 POWER SUPPLY PCB Adjustment Points Digita

29、l DC Voltmeter to Pin 4. 3) Adjust VRI so that the Voltage Value at Pin | Pin GQ are equal or within 0.1V. land 6-2. OFF-SET OF FINAL VCA ON THE VOICE PC BOARD TP.O IC4l IC5 ice I ic9 I IC10 VR2 I BALANCE I kHz AUDIO SIGNAL FROM OSC L CLIPPING LEVEL CLIPPING LEVEL Fig. 6-3 CHORUS PCB Adjustment Poin

30、ts and Instrument Connection Fig. 6-4 1) Set CHORUS switch to 2. 2) Connect an oscilloscope between TPI and GND on the CHORUS PC Board. 3) Connect an Audio Signal Generator to Pin I and| of connector PI on the CHORUS PC Board, and supply 1 kHz Audio Sine wave signal, and Adjust output level control

31、of Audio Generator, so that the waveform on the oscilloscope is clipped a bit. 4) Adjust VR1 so that the Clipping level at upper side and lower side of the waveform are the same clipping level. 5) Connect an oscilloscope between TP2 and GND, and adjust VR2 as same manner as VR1. 6-4. OFF-SET OF IC6

32、(LF356) ON THE CPU PC BOARD VR I /off set Fig. 6-5 CPU PCB ADJUST POINT 1) Set to center position of VR1 on the CPU PC Board. SERVICE MANUAL- VII. PC BOARD TITLES AND IDENTIFICATION NUMBERS VIII. MIDI IMPLEMENTATION CHART MIDI Implementation Chart Version : 1.0 Mode 1 : OMNI ON, POLY Mode 2 Mode 3 :

33、 OMNI OFF, POLY Mode 4 OMNI ON, MONO OMNI OFF, MONO Yes no -SERVICE MANUAL- SECTION 2 PARTS LIST TABLE OF CONTENTS RECOMMENDED SPARE PARTS LIST 13 1. PC BOARD BLOCK 14 2. VOICE PC BOARD 14 3. CPU PC BOARD 14 4. CHORUS PC BOARD 14 5. OPERATION (A) PC BOARD 14 6. OPERATION (B) PC BOARD 14 7. POWER SUP

34、PLY PC BOARD 15 8. FILTER PC BOARD 15 9. PANEL BEND BLOCK 15 10. ASSEMBLY BLOCK 17 11. FINAL ASSEMBLY BLOCK 17 INDEX 18 This Manual is FOR INTERNAL USE ONLY and must not be made available to unauthorized personal. No part of this manual may be re produced in any form without permission from AKAI-ELE

35、CTRIC CO., LTD., Tokyo, Japan. -PARTS LIST- 11 HOW TO USE THIS PARTS LIST 1. This Parts List lists those parts which are considered necessary for repairs. Other common parts, such as resistors and capacitors, are listed in the Common List for Service Parts from which these parts should be selected a

36、nd stocked. 2. The Recommended Spare Parts List shows those parts in the Parts List which are considered particularly important for service. 3. Parts not shown in the Parts List and Common List for Service Parts will not in principle be supplied. 4. How to read the Parts List. a) Mechanism Block b)

37、PC Board 2. HEAD BASE BLOCK 6. MAIN PC BOARD PART NO. BH-T2023A320A HP-H2206A010A ZS-477876 ZS-5 36488 2G-402895 DESCRIPTION HEAD BASE BLOCK HEAD R/P PR4-8FU C PAN20X03STL CMT BID20X08STL CMT SP CS ANGLE ADJUST SP (Service Parts) Classification A small x indicates that this part is not shown in the

38、Photo or Illustration. This number corresponds with the indi vidual parts index number in that figure. This number corresponds with the Figure- Number. Symbols for primary destination! A: AAL(U.S.A.) S: SAA (Australia) B: BEAB(England) U: U/T(Universal Area) C: CSA(Canada) VJ: VDE(W. Germany) E: CEE

39、(Europe) Y: Custom Version J:JPN( Japan) SP (Service Parts) Classification These reference symbols correspond with component symbols in the Schematic Diagrams. The available PC Board Blocks are listed separately. 5. When Part No. is known, Parts Index at end of Parts List can be used to locate where

40、 that part is shown in Parts List by its Reference No. listed at right of Part No. At COMPONENTS. FOR CONTINUED SAFETY, REPLACE SAFETY WTIH MANUFACTURES RECOMMENDED PARTS AVERTISSEMENT LBS COMPOSANTS CRITIQUES OB SECURTlt FOUR MAINTENIR LE DEGRE DE tAPPAREIL, NE REMPLACER QUE DES PIECES RECOMMANDEES

41、 PAR LE 12 -PARTS LIST- RECOMMENDED SPARE PARTS LIST Because, if the parts listed below are on hand, almost any repair can be accomplished, we suggest that you stock these Recommended Spare Parts Items. N N N N REF. NO. 1 2 3 4 5 6 7 8 N 9 10 11 12 13 14 IS 16 17 18 19 20 21 22 23 24 25 26 27 28 29

42、30 31 32 33 N 34 N 35 36 N 37 N 38 N 39 N 40 N 41 N 42 43 44 45 N 46 N 47 N 48 N 49 50 51 N 52 N 53 54 55 56 57 58 N 59 60 61 62 63 N 64 N 65 66 N 67 68 69 70 PART NO. DESCRIPTION BK-364242 KEYBOARD SWITCH ESK-7022 61KEY BT-364697 A TRANS POWER L1012-10 (J) BT-364243 A TRANS POWER L1012-30 (C, A) BT

43、-364698 A TRANS POWER L1O12-5O (E, V, B, S) ED-200213 AD SILICON DBA40C-K15 200/2.6A ED-357038 A D SILICON DBB10B 100/1.0A ED-359863 D LED LN81 CV-(LF) AK ORANGE ED-364261 D LED SLP-981C-50 ED-357754 D SILICON DS135D 200/1.0A ED-301911 D SILICON H DS448 ED-344280 D SILICON H GMA-01-FY2 F05 ED-331626

44、 D ZENER H HZ3 B2 ED-329058 D ZENER H HZ5 Cl ED-319167 D ZENER HHZ6C3 ED-306012 D ZENER HHZ7 A3 ED-346463 D ZENER H HZ7FA F10 C3 EF-355226 A FUSE BET T 1.00A 250V (B) EF-359343 A FUSE BET T 1.60A 250V (B) EF-358974 A FUSE BET T 630MA 250V (B) EF-623103 A FUSE SEMKO T 1.00A 250V (E, V, S) EF-601964 A

45、 FUSE SEMKO T 1.60A 250V (E, V, S) EF-601942 A FUSE SEMKO T 630MA 250V (E, V, S) EF-309388 A FUSE TSC A 250V 0.80A (J) EF-309387 A FUSE TSC A 250V 1.00A (J) EF-311839 A FUSE TSC A 250V 1.60A (J) EF-309392 A FUSE TSC 125V 1.25A (C, A) EF-308847 A FUSE TSC 125V 1.60A (C, A) EF-348123 AICM523OL EI-3595

46、52 AIC M5236L EI-359626 A IC NJM78M 15A EI-359628 A IC NJM79M 15A EI-355113 ICBA715STD EI-364319 ICCD4051BE EI-364246 ICCEM3394 EI-360954 1C1R9311 EI-364378 IC LA6082D EI-364245 IC LA6082S EI-362710 ICLC3517NL-20 EI-364273 IC LF356N EI-364250 ICMD6205 EI-364308 IC MN3009 EI-360228 ICMN3101 EI-353227

47、 ICM5216L EI-337228 ICM5218L El-355904 IC M74LS04P EI-364275 ICM74LS05N EI-355906 ICM74LS14P EI-355917 ICM74LS373P EI-355909 ICM74LS38P EI-3559I0 ICM74LS42P EI-364247 ICNJM13600 EI-364253 ICPST520D-2 EI-302233 ICTC4051BP EI-310036 ICTC4066BP EI-360025 IC TC74HC138P EI-356049 IC TC74HC139P EI-360036

48、ICTC74HC32P EI-364674 IC TMM2764ADC AX60 V1.2 CUSTOM EI-357060 ICUPD7811G-144 EI-354146 IC UPD8253C-2 EI-354149 IC UPD8255AC-2 EI-354232 ICUPD8279C-2 EI-364257 OSC XTAL NR-18 12MC EJ-364256 DINJM1704 3P EJ-360771 DIN J TCS5O37-OI -241 13P EM-364260 IND LE GL-7P201 EQ-348929 RELAY SIG G5A-232P 2TR 12V ER-326169 A R FUSE ERD2FC S10 1/4W 22ROG ER-328278 A R FUSE ERD2FC 1/4W 10ROG