PCB LAYOUT PS2M MA1M PS11 PS3M CN1M CN2M BRILLIANCE PIANO 1 PIANO 2 E.PIANO HARPSICHORD W. BASS TRACK RECORD POWER ROOM MELLOW BRIGHT STAGE LIGHT TONE LOWER TONE SONG LESSON/MEMORY HALL 1 CHORUS MIDDLE VALUE MALTI FUNCTION DISPLAY CONTROL HALL2 TREMOLO HEAVY TRANSPOSE...
DISASSEMBLY INSTRUCTIONS 1. Disassembling top board 1-1. Remove 8 screws on 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.
3. Disassembling console panel Note: To avoid scratch on the side board, put paper between the console panel and the side board at both ends. Insert paper here. Insert paper here. 3-1. Remove three screws afixing the console panel. 3-2. Remove the screw fixing a grounding wire at the transformer. 3-3.
4. Disassembling front cover 4-1. Remove 9 screws at the front edge on the bottom. 4-2. Unscrew 2 screws and remove JCM434-PS4M 5. Removal of keyboard unit 5-1. Disconnect connector CA on the PCB MA1M. 5-2. Remove 24 screws that affix the keyboard unit Front cover screws (16 on the bottom of the case and 8 on the keyboard unit).
6. Removal of keys 6-1. While plying the side partition plastics with tweezers, push the edge of the key toward front. 7. Disassembling keyboard PCBs 7-1. Turn round the keyboard unit to face the PCB up. 7-2. Disconnect the connector at the middle of keyboard. 7-3.
BUTTON MATRIX STEP BY STEP PART L PART R NEXT TOUCH SELECT TRACK A TRACK B PLAY/STOP TEMPO/BEAT/FIXED METRONOME PIANO 2 E. PIANO HARPSICHORD W.BASS PIANO 1 STRINGS CHOIR E.BASS VIBRAPHONE PIPEORGAN CHORUS/TREMOLO REVERB SONG SELECT RECORD VALUE DOWN VALUE UP DEMO POWER SUPPLY CIRCUIT The power supply circuit generates four voltages as shown in the following table.
TROUBLESHOOTING No power Check fuse F101. Is F101 blown up? Replace F401. Check fuses F402, F403, and F404. Are the fuses blown up? Replace F402, F403, and F404. Measure output voltages of the transformer. Are the voltages 40 V AC and 8 V AC? Replace main PCB.
No sound Does the power indicator light up? Follow "No power" troubleshooting. Check the main volume. Is it OK? Replace main volume. Disconnect CA and CB connectors on the main PCB. Press Demo button. Does the demo tune sound? Replace the main PCB. Replace keyboard PCBs.
Certain keys do not function Replace the main PCB. Do the keys function? Replace keyboard PCBs. A certain key does not function Clean the contact. Does the key function? Replace the key contact rubber. Does the key function? Replace keyboard PCBs. Does the key function? Replace the main PCB.
A certain button does not function Replace the console PCBs. Does the button function? Replace MA1M PCB. A certain tone is strange when record/playback Check the cord of pedal unit Is it disconnected? Connect the cord Replace the main PCB. —...
WIRING DIAGRAM JCM434-PS11 POWER Lamp PHONE POWER AC PLUG Switch JCM434-PS3M CH-1 CH-1 CH-2 CH-2 JCM434-PS4M LINE IN LINE OUT MIDI CF-1 R-mel IN CF-2 L-mel IN CF-3 CF-4 L-mel OUT R-mel OUT CF-5 JCM434-PS2M POWER TRANSFORMER LK14 JK-1 JK-1 LK13 JK-2 JK-2...
PARTS LIST AP-40 Notes: This parts list does not include the cosmetic parts, which parts are marked with item No. "R-X" in the exploded view. Contact our spare parts department if you need these parts for refurbish. Prices and specifications are subject to change with- out prior notice.
PARTS PRICE LIST AP-40 Item Code No. PART NAME Specification Price Code BK BN Main PCB 1003 2486 PCB ASSY/MA1M M241412*1 TK(M435) 3815 0794 BATTERY / LITHIUM CR2032/1VC1 D1-D4 2390 2555 DIODE / SHOTTKY RB500V-40TE-17 2390 2555 DIODE / SHOTTKY...
Ver.1 : Correction of page 21, due to parts code misprinted. CASIO TECHNO CO.,LTD. Overseas Service Division Nishi-Shinjuku Kimuraya Bldg. 1F 5-25, Nishi-Shinjuku 7-Chome Shinjuku-ku, Tokyo 160-0023, Japan...