Casio Celviano AP-24, Service Manual

Page 1: ...ELECTRONIC KEYBOARD AP 24 JUN 2004 AP 24 ...

Page 2: ...CONTENTS Specifications 1 Block Diagram 2 Circuit Description 3 Printed Circuit Board 4 Disassembly 6 Diagnostic Program 15 Schematic Diagrams 17 Exploded View 26 Parts List 28 ...

Page 3: ... lithium battery Battery Life 5 years Pedals Damper Soft Sostenuto Selectable Other Functions Metronome Beat 6 types Tempo 30 to 255 Touch Select 3 types off Transpose 1 octave F to C to F Tuning A4 440Hz 50 cents adjustable MIDI 16 multi timbre receive Input Output Headphones Stereo standard jacks 2 MIDI OUT IN Speakers ø12cm 2 Output 20 W 20 W Power Supply AP 24 120V AP 24V 220 240V Power Consum...

Page 4: ...K RXDI TXDO HEADPHONE MIDI Keyboard LED Button LED Controller UPD65881GK 002 9ET IC601 MPU ML6763B NNTC 116 IC4 Button IN OUT PEDAL FI0 10 SI0 10 KC0 7 MA1 20 MD0 15 RAM 128K 16 Static RAM CY62126DV30LL55ZIT IC6 VC VF VD5 5V VA15 15V Power Supply IC202 Q205 D207 MA1 16 MD0 15 SP SP RESET MOUT MIN DAMP SOFT STENT L R LINE OUT LINE IN L R L R Filter NJM2068M IC205 Filter NJM2068M IC204 ...

Page 5: ... G1 2 A12 A1 2 B12 C22 FI2 C2 1 D21 D2 1 E21 F21 F2 1 G21 G2 1 SI2 C2 2 D22 D2 2 E22 F22 F2 2 G22 G2 2 FI3 A21 A2 1 B21 C31 C3 1 D31 D3 1 E31 SI3 A22 A2 2 B22 C32 C3 2 D32 D3 2 E32 FI4 F31 F3 1 G31 G3 1 A31 A3 1 B31 C41 SI4 F32 F3 2 G32 G3 2 A32 A3 2 B32 C42 FI5 C4 1 D41 D4 1 E41 F41 F4 1 G41 G4 1 SI5 C4 2 D42 D4 2 E42 F42 F4 2 G42 G4 2 FI6 A41 A4 1 B41 C51 C5 1 D51 D5 1 E51 SI6 A42 A4 2 B42 C52 C...

Page 6: ... 4 PRINTED CIRCUIT BOARD MAIN PCB M420 MAA1 Bottom view Top view ...

Page 7: ... 5 SUB PCB M420 PSA1 Bottom view Top view CONSOLE PCB M420 PSA3 LED PCB M420 PSA4 POWER SUPPLY PCB M420 ACA1 JACK PCB M420 PSA2 ...

Page 8: ...d then remove the pedal cord from the clip 2 Remove two butterfly bolts Slide the piano toward the rear side and then remove it from the brackets Bracket Butterfly bolt A screw Front side Rear side B screws C screws Pedal plug Clip To remove the pedal from the stand 1 Remove the two B screws and six C screws 2 Remove four screws ...

Page 9: ...toward the front side Next lift the top board and remove it from the piano To remove the keyboard cover 1 Close the keyboard cover 2 Remove one screw and the bracket 3 Lift the gear part upward 1 and then slide the keyboard cover toward the rear side 2 to remove it 1 2 1 2 ...

Page 10: ...rd 1 Remove the two A screws on the front side and the panel 2 Remove the three C screws on the back side Next remove the eight B screws on the front side and remove the bracket Front side Back side A screw B screws C screws ...

Page 11: ... 9 3 Remove 19 screws on the back side Next remove three screws and one FPC on the front side and then remove the key ASSY Back side Front side ...

Page 12: ... 1 2 3 a Seven Pins Four Pins 1 2 2 4 Remove eight rubber keys 5 Remove 32 screws and the key PCB Precautions when assembling the rubber keys The length of this only one rubber key is different The numbers of pins on the upper and lower sides are different Insert the pins and fix them tightly Eight Pins Three Pins To remove the key PCB 1 Remove two screws and the bracket 1 2 3 ...

Page 13: ...he PCB 2 To remove the M420 PSA1 PCB Remove eight screws five connectors and five lead wires 1 To remove the M420 MAA1 PCB Remove six screws and two connectors S 3 To remove the M420 ACA1U PCB Remove four lead wires one connector and four clips ...

Page 14: ... 12 SL SR CR CL 4 To remove the transformer Remove four screws and seven lead wires 5 To remove the speaker Remove eight screws and two connectors ...

Page 15: ...remove the M420 PSA4 PCB 1 Remove six screws and the front board 2 Remove two screws and the PSA4 PCB To remove the M420 PSA2 PCB and the M420 PSA3 PCB 1 Remove three screws 2 Remove two screws and the switch ...

Page 16: ... 14 3 Remove two screws and the bracket 5 Remove one screw and one volume knob and then remove the M420 PSA3 PCB 4 Remove two nuts and the M420 PSA2 PCB ...

Page 17: ...D CHECK The LED continues to light in the order of USER_SONG 씮 PART L 씮 PART R 씮 SPLIT 2 BUTTON check 1 Press CONTROL button The confirmation chord of C4 E4 and G4 sounds 2 Press the buttons in the following order 1 METRONOME Button The confirmation tone of C6 sounds 2 RECORD Button The confirmation tone of C6 sounds 3 START STOP Button The confirmation tone of C6 sounds 4 SPLIT Button The confirm...

Page 18: ...s 6 Remove the tuning meter from the jack PART L LED lights 5 MIDI IN OUT check If there is no MIDI cable this check can be skipped 1 Connect MIDI IN and MIDI OUT terminals with a MIDI cable 2 Press CONTROL button The confirmation chord of C4 E4 and G4 sounds PART L LED lights 3 Press A4 KEY button The confirmation chord of C4 E4 and G4 sounds 6 ROM version check Version 1 20 LED should be in the ...

Page 19: ... 17 SCHEMATIC DIAGRAMS MAIN PCB M420 MAA1 ...

Page 20: ... 18 SUB PCB M420 PSA1 ...

Page 21: ... 19 JACK PCB M420 PSA2 ...

Page 22: ... 20 CONSOLE PCB M420 PSA3 ...

Page 23: ... 21 LED PCB M420 PSA4 ...

Page 24: ... 22 POWER SUPPLY PCB M420 ACA1 ...

Page 25: ... 23 Keyboard PCB MPCK KYA1 ...

Page 26: ... 24 Keyboard PCB MPCK KYB2 ...

Page 27: ... 25 Keyboard PCB MPCK KYA3 ...

Page 28: ... 26 EXPLODED VIEW 7 6 41 20 38 37 36 27 1 2 16 4 3 40 39 8 22 32 29 30 31 25 28 23 24 26 33 34 35 11 14 15 12 5 19 9 9 1 18 17 11 12 13 10 21 ...

Page 29: ... 27 x4 x6 x1 x2 x2 x2 x2 x2 Clip Pedal plug Connecting the Pedal 42 43 46 48 49 50 44 45 44 45 47 ...

Page 30: ...t our spare parts department if you need these parts for refurbish 1 Prices and specifications are subject to change with out prior notice 2 As for spare parts order and supply refer to the GUIDEBOOK for Spare parts Supply published seperately 3 The numbers in item column correspond to the same numbers in drawing PARTS LIST AP 24 ...

Page 31: ...05 4029 FUSE 50T010H 1 AC A 230V FU2 3 1005 2230 FUSE 51MS040L 2 AC A 120V FU2 3 1005 4030 FUSE 50T040H 2 AC A 230V IC1 1004 3418 IC LM4765T 1 BC C IC4 5 2121 0072 IC NJM2068DD 2 AD C IC2 2114 5796 IC NJM78M05FA 1 AE C IC3 2114 5794 IC NJM78M15FA 1 AE C PS2A 3A PCB N 3 1016 4306 PCB ASSY PSA2 TK RJM503837 001 1 CE C N 4 1016 4308 PCB ASSY PSA3 TK RJM503839 001 1 BV B N D2 3 4 1016 4051 LED KM2520S...

Page 32: ...03217 001 13 AL C 31 1013 5438 HAMMER ASSY W4 TK RJM503218 001 13 AL C 32 1013 5439 HAMMER ASSY B1 TK RJM503219 001 9 AK C 33 1013 5440 HAMMER ASSY B2 TK RJM503220 001 9 AK C 34 1013 5442 HAMMER ASSY B3 TK RJM503221 001 9 AK C 35 1013 5443 HAMMER ASSY B4 TK RJM503222 001 9 AK C 36 3719 5442 CABLE N30315B1B05 UL2896 1 AO C 37 1013 3656 KEY RUBBER RJM502920 001V01 7 AK C 38 1013 3635 KEY RUBBER RJM5...

Page 33: ...CASIO TECHNO CO LTD Overseas Service Division 6 2 Hon machi 1 Chome Shibuya ku Tokyo 151 8543 Japan ...