Casio Celviano AP-22S Service Manual Download Page 2

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CONTENTS

Safety Notice ...................................................................................... 2

Specifications .................................................................................... 4

Block Diagram ................................................................................... 5

PCB Layout ........................................................................................ 6

Disassembly Instructions ................................................................. 7

Circuit Description .......................................................................... 11

Major Waveforms ............................................................................. 13

Printed Circuit Board ...................................................................... 14

Troubleshooting .............................................................................. 15

Wiring Diagram ................................................................................ 19

Exploded View ................................................................................. 20

Parts List .......................................................................................... 23

Schematic Diagrams ....................................................................... 25

SAFETY NOTICE

CAUTION!
Danger of explosion if battery is incorrectly replaced. Replace
only with the same or equivalent type.

Summary of Contents for Celviano AP-22S

Page 1: ...ELECTRONIC KEYBOARD AP 22S...

Page 2: ...ructions 7 Circuit Description 11 Major Waveforms 13 Printed Circuit Board 14 Troubleshooting 15 Wiring Diagram 19 Exploded View 20 Parts List 23 Schematic Diagrams 25 SAFETY NOTICE CAUTION Danger of...

Page 3: ...isesti VARNING Felaktigt batteribyte kan medf fara f r explosion Anv nd d r f r endast samma typ eller likv rdig typ enligt apparat tillverkarens rekommendation Kassera f rbrukade batterier enligt til...

Page 4: ...Tempo q 30 to 300 Touch Select 3types Transpose 1 octave F to C TO F Tuning A4 440 Hz 13 Hz adjustable Temperament 7 types Baroque pitch MIDI 16 multi timbre receive Input Output Headphones Standard...

Page 5: ...65005GF 419 D A Converter PD6376GS D A Converter PD6376GS Filter Mixer Mute Circuit Power Amp STK4132MK RA0 22 RD0 15 EA0 14 ED0 15 D0 7 D0 7 L18 28 KI0 3 LA LG LP LK8 14 LEDs Buttons Keyboard KC0 7 M...

Page 6: ...TONE TONE W BASS W BASS LOWER TONE LOWER TONE E BASS E BASS TOUCH SELECT TOUCH SELECT MALTI FUNCTION DISPLAY MALTI FUNCTION DISPLAY VALUE TEMPO BEAT FIXED PHRASE REPEAT PHRASE REPEAT NEXT METRONOME R...

Page 7: ...n the rear 1 2 Slide the top board towards the rear The top board will be free from catches on the case 1 3 Lift the top board 2 Disassembling keyboard cover 2 1 Slide the keyboard cover to open fully...

Page 8: ...screws afixing the console panel 3 2 Remove the screw fixing a grounding wire at the transformer 3 3 Disconnect two connectors CF on PCB JCM434 PS2M and CD on PCB JCM434 MA1M 3 4 Slide the console pan...

Page 9: ...bottom 4 2 Unscrew 2 screws and remove JCM434 PS4M 5 Disassembling keyboard unit 5 1 Remove 12 screws fixing front end of the keyboard unit and three screws supporting rear end of the keyboard 5 2 Rem...

Page 10: ...up 7 2 Disconnect the connector at the middle of keyboard 7 3 Remove screws on the keyboard PCBs 8 Replacing the main PCB Note The main PCB contains a lithium battery for memory back up Please remove...

Page 11: ...C3 2 C3 2 D3 2 D3 2 E3 2 FI4 F3 1 F3 1 G3 1 G3 1 A3 1 A3 1 B3 1 C4 1 SI4 F3 2 F3 2 G3 2 G3 2 A3 2 A3 2 B3 2 C4 2 FI5 C4 1 D4 1 D4 1 E4 1 F4 1 F4 1 G4 1 G4 1 SI5 C4 2 D4 2 D4 2 E4 2 F4 2 F4 2 G4 2 G4...

Page 12: ...PEORGAN REVERB L27 SONG SELECT RECORD L28 VALUE DOWN VALUE UP DEMO TEMPO BEAT FIXED CHORUS TREMOLO BUTTON MATRIX POWER SUPPLY CIRCUIT The power supply circuit generates four voltages as shown in the f...

Page 13: ...L24 UPD65005GF 419 pin 53 7 Button scan signal L25 UPD65005GF 419 pin 54 8 Button scan signal L26 UPD65005GF 419 pin 55 CH1 5V CH2 5V A 2ms CH1 CH2 6 7 CH2 5V CH3 8 Tone Piano 1 Key A4 3 Key scan sign...

Page 14: ...14 PRINTED CIRCUIT BOARD Top View Bottom View C93 C95 C94 C96 C97 C98 C85 C86 C87 C88 C89 C83 C90...

Page 15: ...tages 40 V AC and 8 V AC Is it OK Is it OK Measure output voltages of the transformer Replace the transformer No No Replace F401 Replace F402 F403 and F404 Yes Yes No No Yes Yes Yes Replace main PCB N...

Page 16: ...ne sound Replace keyboard PCBs Disconnect CA and CB connectors on the main PCB Follow No power troubleshooting No Yes Yes Yes No No Replace main volume Press Demo button Replace the main PCB Check the...

Page 17: ...ction Replace the main PCB Do the keys function Yes No Replace keyboard PCBs End Clean the contact Does the key function Does the key function Yes No No Replace the key contact rubber Replace keyboard...

Page 18: ...t function Replace the console PCBs Does the button function Yes No Replace MA1M PCB End 7 A certain tone is strange when record playback Check the cord of pedal unit Is it disconnected Yes No Replace...

Page 19: ...D RESET P93 P94 P90 P14 P13 P12 P73 P72 P71 P70 VDDT PB7 CD 1 CD 2 CD 3 CD 4 CD 5 CD 6 CD 7 CD 8 CD 9 CD 10 CD 11 CD 12 CD 13 CD 14 CD 15 CD 1 CD 2 CD 3 CD 4 CD 5 CD 6 CD 7 CD 8 CD 9 CD 10 CD 11 CD 12...

Page 20: ...20 28 R 4 R 3 32 R 2 33 31 30 26 27 2 29 1 3 8 9 19 24 23 21 12 18 20 22 14 18 17 16 19 13 15 15 7 6 10 9 11 8 5 4 33 R 6 R 1 R 5 EXPLODED VIEW CABINET...

Page 21: ...21 35 34 R 9 R 8 R 7 STAND...

Page 22: ...r 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...

Page 23: ...9 LED LN382GPX TX2 3 B LED301 2370 0497 LED LB 603VP 1 B IC301 2114 3318 IC BA612 1 B LSI301 2011 0812 LSI UPD65005GF 419 1 A Q309 Q312 2220 1409 TRANSISTOR 2SC1740SR TP T 4 A Q301 Q308 2259 1883 TRAN...

Page 24: ...15 6926 4940 SPRING FOR KEY 88TP 20 23002160 88 B 16 6926 4950 WHITE KEY 1 OCTAVE 88TP 20 42123920 7 A 17 6926 4960 BLACK KEY 1 OCTAVE 88TP 20 42123910 7 A 18 6926 5280 INITIAL KEY A0 88TP 20 4232851...

Page 25: ...25 Reset IC Key controller CPU ROM 8M RAM 256K D A Converter D A Converter ROM 24M DSP To Pedal Unit 256K RAM RAM 256K 3 4 5 SCHEMATIC DIAGRAMS Main PCB JCM434 MA1M...

Page 26: ...26 Power Amp Mute Mute Power Supply circuit Mixer Filter 1 2 I O PCBs JCM434 PS2M Phone Jack PCBs JCM434 PS3M LED PCBs JCM 434 PS4M Power PCBs JCM 434 PS11...

Page 27: ...27 8 Switch LED Controller 7 6 Console PCBs JCM434 CN1M...

Page 28: ...28 Console PCBs JCM434 CN2M...

Page 29: ...29 Keyboard PCB TP20 KY 1...

Page 30: ...30 Keyboard PCB TP20 KY 2...

Page 31: ......

Page 32: ...CASIO TECHNO CO LTD Overseas Service Division 8 11 10 Nishi Shinjuku Shinjuku ku Tokyo 160 0023 Japan...

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