DISASSEMBLY ■ To remove main body and speaker box. *The screws come with the cap. *Do not forget to attach the screw caps when assembling. 1. Remove the Connector and Pedal cord. 2. Remove 2 screws and then the Pedal unit Pedal cord Screws Connector...
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■ Speaker box disassembly 1. Remove the 20 screws and then the back of the speaker box. 2. Remove the 4 screws for each speaker and then take out the speakers (left and right). ■ Removing the T-BRD-UNIT. 1. Remove 18 screws and then the T-BRD unit. T-BRD unit –...
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■ Removing the Key cover. 1. Remove the 4 screws and the 2 stoppers on the left and right ends. Stoppers Precautions During Assembly To avoid any risk of damaging the stoppers during installation, do not use an electric screwdriver. 2.
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■ Removing the PCBs (M408-MDA1 PCB, M408-PSA1 PCB, M681-CNA3 PCB). 1. Remove the twist ties that hold the cables in place. 2. Remove 8 screws 3. Remove the PCB case. M408-MDA1 PCB M408-PSA1 PCB M681-CNA3 PCB – 10 –...
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4. Remove the 11 connectors, release the lock and then remove the FPC. Connector Connector Connector Connector (Keyboard) (Pedal) (M681-CNA3) (M681-CNA2) (SPEAKER(L)) Connector (Power SW) Connector Connector Connector Connector Connector Connector (M681-CNA1) (M681-CNA1) (M408-MDA1) (M681-CNA3) (SPEAKER(R)) (M681-CNA4) 5. Remove 4 screws and the M408-MDA1 PCB. 6.
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■ Removing the Pedal connector. 1. Remove 2 screws and then the Pedal connector. ■ Removing the Front board. 1. Remove the 10 screws and lift up the front board. * The panel is still connected by a lead. 2. Remove the front board. Front board ■...
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■ To remove the CN-PANEL 2. Remove 4 screws and the CN-PANEL. CN-PANEL ■ Removing the Side block 1. Remove the 6 screws.(left and right). <The right side> <The left side> 2. Remove the side units (left and right). – 13 –...
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■ Disassembling the left side unit (M681-CNA1 PCB, M681-CNA2PCB) 1. Remove the side case. 2. Remove 2 screws and the M681-CNA2 unit. 3. Remove 2 nuts and the M681-CNA2 PCB. M681-CNA2 PCB 4. Remove 4 screws. 5. Remove the volume knob and the rubber key and M681-CNA1 PCB. Rubber key M681-CNA1 PCB –...
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■ Disassembling the right side unit (Power switch) 1. Remove the side case. 2. Remove 2 screws and the Power switch. Power switch – 15 –...
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■ To remove the Keyboard 1. Remove 2 screws and then 2 brackets 2. Remove 24 screws and then the KEY-BOARD ASSY. 3. Remove the keys. – 16 –...
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Caution while assembling the keys. • Set the key as shown in figures below. 4. Remove 8 rubber keys. * One of the keys has the different length from others. How to install the rubber keys. 5. Remove 9 screws then the MCPZ-KYA1 PCB. 6.
DIAGNOSTIC PROGRAM Initial Setting 1. Connect the AC adaptor. 2. Connect the pedal. NOTE: If there is no pedal, pedal check can be skipped. 3. “Main” volume: MAX How to start diagnostic program 1. While pressing down “METRONOME”, “RECORDER”, and “/” buttons at the same time, turn the power ON. * Wait for confirmation chords C4, E4, G4 sound.
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3. ROM version check (Internal / External) Press “TONE/SETTING” button to perform the “ROM check (Internal).” The confirmation chords C4, E4, G4 sounds. Each time “▲/” button is pressed, the different LEDs light. Confirm with the lit LED. ...
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5. MODEL check Press the “SOFT” pedal. The confirmation chord E4 sounds and “MODERN” LED lights. Press the “SOSTENUTO” pedal. The confirmation chord G4 sounds and “MODERN” LED lights. Press the “DAMPER” pedal. (ON HALF) The confirmation chord C4 sounds and “CLASSIC” LED lights. ...
PARTS LIST PX-720/PX-720C 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. 1. Prices and specifications are subject to change without prior notice.
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Ver. 5 : Jan. 2010 • Correction of the EXPLODED VIEW (P21) • Correction of the PARTS LIST (P25) Ver. 6 : Oct. 2015 • Correction of the PARTS LIST (P25) CASIO COMPUTER CO.,LTD. Overseas Service Division 6-2, Hon-machi 1-Chome Shibuya-ku, Tokyo 151-8543, Japan...
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