Casio PX-150 - PCB UNIT REMOVAL PROCEDURE; REMOVE POWER AMP AND HPA1 PCBS

Send Mainly sent in the following cases.
• When the keyboard channel is changed
• When a recorder function is used
• When another mode is entered from the rhythm mode(PX-350M, AP-650M)
• When the Duet mode is entered or exited
• When the Duet octave shift changed
• When the DEMO mode is entered or exited
• When USB memory is mounted
Receive Receipt initializes each performance controller.
9.3 All Notes Off (7BH)
Format
Message Format: BnH 7BH 00H
n: MIDI Channel Number
Send Mainly sent in the following cases.
• When the keyboard channel is changed
• When a recorder function is used
• When another mode is entered from the rhythm mode(PX-350M, AP-650M)
• When octave shift changed
• When the DEMO mode is entered or exited
Receive Receipt of this message releases the currently sounding voice (same as releasing the keyboard
key).
9.4 Omni Off (7CH)
Format
Message Format: BnH 7CH 00H
n: MIDI Channel Number
Send This message is never sent.
Receive Receipt of this message releases the currently sounding voice (same as releasing the keyboard
key).
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