PROGRAMMABLE POLYPHONIC SYNTHESIZER MODEL AXOO SECTION 1 SERVICE MANUAL SECTION 2 PARTS LIST SECTION 3 SCHEMATIC DIAGRAM SECTION 4 SERVICE BULLETIN
ABBREVIATIONS FOR THE SERVICE MANUAL
SAFETY INSTRUCTION SAFETY CHECK AFTER SERVICING Confirm the specified 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 [a]i specified insulation resistance should be more than 2.2 Mohms (ground terminals, microphone jacks, headphone jacks, line-in-out jacks etc.) PRECAUTIONS DURING SERVICING 1.
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 IV. THE KEYBOARD REACTION-SHIP TO EQUALLY TEMPERED SCALE V. PRINCIPAL PARTS LOCATION 7 VI. ADJUSTMENT 8 FREQUENCIES AND MUSICAL-NOTATION 7 1. BALANCE OF ±6V ON THE POWER SUPPLY PC BOARD 8 2. OFF-SET OF FINAL VCA ON THE VOICE PC BOARD 8 3.
I.
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 improvement purposes, specifications and design are subject to change without prior notice. FOR THE II. DISMANTLING OF UNIT KEYBOARD FOR THE BEND PANEL BLK Fig. 2-2 In case of trouble, etc. necessitating dismantling, please dismantle in the order shown in the photographs. Reassemble in reverse order.
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. OCTAVE SELECT BUTTON and INDICA TORS To set the basic octave range of the key board between 2' (highest range) and 32' (lowest range).
IV. THE KEYBOARD REACTION-SHIP TO EQUALLY TEMPERED SCALE FREQUENCIES AND MUSICAL-NOTATION.
VI. ADJUSTMENT 6-1. BALANCE OF ± 6V ON THE POWER SUPPLY PC BOARD Fig. 6-1 POWER SUPPLY PCB Adjustment Points 1) Connect a Digital DC Voltmeter between Pin [T] Digital DC Voltmeter to Pin [4]. (+6V) and Pin 0 (GND) of connector P4 on the 3) Adjust VRI so that the Voltage Value at Pin | land Pin GQ are equal or within ± 0.1V. POWER SUPPLY PCB as shown Fig. 6-1. 2) Read the + Voltage Value at the Pin [T|, and connect a 6-2. OFF-SET OF FINAL VCA ON THE VOICE PC BOARD TP.
6-3. BALANCE OF BBD OUTPUT ON THE CHORUS PC BOARD J2 ICI3 IC10 ■ I kHz AUDIO •L J3 TPI I >IC4l > IC5 > ice I > ic9 I CLIPPING LEVEL VR2 BALANCE SIGNAL FROM OSC CLIPPING Fig. 6-3 CHORUS PCB Adjustment Points and Instrument Connection 1) Set CHORUS switch to "2". LEVEL Fig. 6-4 the oscilloscope is clipped a bit. 2) Connect an oscilloscope between TPI and GND on 4) Adjust VR1 so that the Clipping level at upper side the CHORUS PC Board.
VII. PC BOARD TITLES AND IDENTIFICATION NUMBERS VIII. MIDI IMPLEMENTATION CHART MIDI Mode Mode 1 3 : : OMNI ON, OMNI OFF, POLY POLY Mode Mode Implementation Chart 2 4 Version : 1.
SECTION 2 PARTS LIST TABLE OF CONTENTS RECOMMENDED SPARE PARTS LIST 13 1. PC BOARD BLOCK 14 2. VOICE PC BOARD 14 14 3. CPU PC BOARD 4. CHORUS PC BOARD 14 5. OPERATION (A) PC BOARD 14 6. OPERATION (B) PC BOARD 14 7. POWER SUPPLY PC BOARD 15 8. FILTER PC BOARD 15 PANEL BEND BLOCK 15 10. 9. 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.
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 and 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.
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. REF. PART NO. NO. DESCRIPTION 1 N BK-364242 KEYBOARD SWITCH ESK-7022 61KEY 2 N BT-364697 A TRANS POWER L1012-10 (J) 3 N BT-364243 A TRANS POWER L1012-30 (C, A) 4 N BT-364698 A TRANS POWER L1O12-5O (E, V, B, S) 5 ED-200213 AD SILICON DBA40C-K15 200/2.6A 6 ED-357038 A D SILICON DBB10B 100/1.
1. PC BOARD BLOCK REF. NO. 3-1 PART NO. DESCRIPTION EJ-358691 SOCKET IC DILB28P-8J ASSEMBLY BLOCK 3-IC7 EI-364674 IC TMM2764ADC AX60 V1.2 3-BT1 EZ-358816 BATTERY LITHIUM BR2032-1HF CUSTOM 2. VOICE PC BOARD 4. CHORUS PC BOARD REF. NO. PART NO. DESCRIPTION EI-337228 EI-364308 EI-360228 EI-353227 ICM5218L ET-348302 TR FET 2SK381 C, D F05 ET-360067 TR 2SC333O T, U F05 4-IClto3,6,7, 10,11,13 4-IC4,8 4-IC5.9 4-IC12 IC MN30O9 ICMN3101 ICM5216L 4-TR1.2.5, 8,18 4-TR3.
9. PANEL BEND BLOCK 7. POWER SUPPLY PC BOARD REF. NO. PART NO. DESCRIPTION POWER SUPPLY PC BOARD 7-IC1 EI-359552 AIC M5236L 7-IC2 EI-359626 EI-359628 EI-348123 ET-356817 A IC NJM78M15A A IC NJM79M15A AICM5230L A TR 2SB891 Q, R ET-354083 ET-360067 A TR 2SD1189 Q, R TR 2SC3330 T, U F05 ED-200213 ED-357038 AD SILICON DBA40C-K15 200/2.6 A A D SILICON DBB10B 100/1.0 A 7-IC3 7-IC4 7-TR1.3 7-TR2 7-TR4to6 7-D1 7-D2 7-D3,5, ED-357754 D SILICON DS135D 200/1.
ASSEMBLY BLOCK 15 14 I 2 17 SW902 1 A(SW90l) -PARTS LIST- 16 ! i '
FINAL ASSEMBLY BLOCK 10. ASSEMBLY BLOCK npr 11. FINAL ASSEMBLY BLOCK £q PART NO.
INDEX AX60 -PARTS LIST-
AX60 -PARTS LIST- 19
MEMO 20
AKAI MODEL AX60 SECTION3 SCHEMATIC DIAGRAM AND PC BOARD TABLE OF CONTENTS 1. POWER PC BOARD , •••• m 2. CONNECTION DIAGRAM .... 3 3. CONTROL BLOCK DIAGRAM >••• 4 4. VOICE AND CHORUS BLOCK DIAGRAM .... 5 5. CPU DIAGRAM .... 6 6. CPU PC BOARD .... 7. VOICE PC BOARD 8. VOICE DIAGRAM 9. OPERATION DIAGRAM. 7 8 ..... 9 10 10. OPERATION (A), (B) PC BOARD. ...11 11. CHORUS DIAGRAM ...12 12. CHORUS PC BOARD ,.13 13. LOCATION OF ICs ,.
3 B CHORUS LOCATION 8 H* •I=PNP TRANSISTOR 8 TRI,2,3,8,I8 --2SK38KC.D) -2SC333O(T,U) TR6,7,II,I3 -2SAI3I7(T,U) TR9.
LOC AT I ON OF COMPONENTS | IC*f ICI 61 62 IC3 63 IC4 64 IC5 61 IC6 61 IC7 61 IC8 -—62 IC9 62 IC10— 62 ICII G2 ICI2 62,3 IC2 ICI3---G3 ICI4---G3 ICI5---G3 ICI6— -63 ICI7 63,4 ICI8---G4 ICI9 64 IC20-—F,64 IC2I El IC22-—A 1,2 IC23 81,2 IC24—CI.2 IC2S—01,2 IC26 01,2 IC27—EI.2 IC28-—Al,2 IC29—CI.2 IC30—El,2 IC3I A2,3 IC32 82,3 ICS3-—C2,3 IC34 02,3 IC33-—02,3 IC36—E2,3 IC37—A,B3 IC36 C3 IC39—E3 IC40—E4 IC4I 04 IC42-—C4 IC43 A,B4 IC44—84 IC43-—A4 TR't TRI 62 TR2 62 TR3 63 TR4—E.
CPU PCB LI0I2A5020 TRI 2SC3400 TR2.
74LS42 74LS04 74LS05 MD62705 MN3009 74LS373N TC4066 74HC38 MN3101 74HC138 CEM3394 TC4051 OUMUBL CTUOPT 74HC139 *n *n
i: in 6: 6ND o: out NJM79MI5A SUPPLY NE REMPLACER QUE DES PIECES RECOMMANDEES PAR LE FABRICANT AVERTISSEMENT AlL INOIQUE LES COMPOSANTS CRITIQUES OE StCURITl POUR MAINTENIR LE DEGRE DE SECURITY DE L'APPAREIL. RECOMMENDED PARTS REPLACE SAFETY CRITICAL COMPONENTS ONLY WITH MANUFACTURERS WARNING: AlNOICATES SAFETY CRITICAL COMPONENTS FOR CONTINUED SAFETY. •|=NPN TRANSISTOR K»J=PNP TRANSISTOR POWER M5236L NJM78MI5A PCB LI0I2B5050 2SB89K0.
SECTION 4 SERVICE BULLETIN O O O This section describes the information on techniques revisions and troubleshooting for ser vicing and adjusting AX60. To maintain the performance of AX60, see also AX60 Service Manual for servicing and adjustment. Further technical information will be issued as any arises. Keep such information carefully under the name of this file. This Manual is TOR INTERNAL USE ONLY and most not be made available to unauthorized personal.
MODEL: 001 AX60 No. Subject: To been changed to 1. AUTO TUNE request by MIDI AUTO MUTE request by AUTO MUTE button functions When VERIFY AX60 is is recognized but inoperative for Since the position of is turned off, posistion of the switch 35 recorded reason may be, setting VR, the transmitted. up to 6 times causing seconds. on the tape and that of the data in AX60 may be is off.
MODEL: AX60 INDEX
C B tX60 OPERATION(A) PC8 LI0I2A5040 9»J B 81 POWER SUPPLY) LINE
OPERATION(B) PCB LI0I2A5060 NOTE UNLESS OTHERWISE SPECIFIED ALL RESISTORS Hi OHMS 1/4WU) ALL CAPACITORS IN mf SOWVO) 2SAI3I7 AX60 OPERATION(A)/(B) SCHEMATIC DIAGRAM no.
B AX 60 04 ICS MN3J0I MPUT SELCCT |Sj tSS» LFOl.t \7\ IT.
61 mm NOTE IKOICATEO VOLTAGES ARE MEASURED AT CHORUS " I" MOOE ® a PULSE UNLESS OTHERWISE SPECIFIED ALL RESISTORS IN OHMS 1/4WO) ALL CAPACITORS IN *F 50WV( J) AX60 CHORUS SCHEMATfC DIAGRAM no.
JD_ (SAV?1 II 1 'I UU: ssssasts I SAMPLER II TOCNKt PS 3$ II iii h IVERlfYl m 4 to cvu pci .
H r: \\\\\\\ a * -1 -I h 35 OB®—' PEDAL SUSTAIN ARPEGGIO EXT SYNC C4t O.OOllZl TAPE OUT .. 8 I ICI4 (4/« - TC74HC32P ' MEMORY pROTECT CPU PCB L4OI2A5O2O NOTES UNLESS OTHERWISE SPECIFIED ALL RESISTORS IN OHMS 1/6W(J) ALL CAPACITORS IN *F 50 WV(J) 2SC3330 2SC2400 H AX60 CPU SCHEMATIC DIAGRAM no.
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r i I \ 1 ) FILTER MOD ID) CV OWAVE 8ELCCT (U) CV I r j j j 1 Svcp-I cv Hvca-s cv ^resonance iu) cv Sa-b balance ioi cv OfiXT IM ON/OFF AkOISE IN ON/OFF LoV°J£^:5_J VOICE 2 OUT I 61 CHORUS PCB L1012B5030 AX60 VOICE a CHORUS BLOCK DIAGRAM no.
B OPERATION (A) PCB LI0I2A5040 liS ?i« —- — — — —— [operation switchedes "I I OPERATION (B) PCB I LI0I2A5060 CPU PCB LI0I2A5020
■ 00OQ p Sen 0D> TO VOICE PCBP3 TO POWER SUPPLY PCB I TO CHORUS PCBW9 TO VOICE PCB PI I
B OPERATION(B) PCB LI0I2A5060 OPERATION(A) PCB LI0I2A5040 VOICE PCB CHORUS PCB I LI0I2A50I0 LIOI2B5O3O | U/L MIX | 1H4—^, oovACfpi ▲ n fuse I E.V.B.
H POWER SUPPLY PCB LI0I2B5050 H AX60 CONNECTION DIAGRAM no.
