GT-6(T) BLOCK DIAGRAM fig.block 21 CN8 CN10 SW4 BOARD ASSY ENC BOARD CARBON SW ENCODER MIDI OUT IN CN5 JK8 CN4 CN4 EXP BOARD ASSY JK11 PEDAL VR CN6 SUB EXP PEDAL CN7 CN11 SUB CTL 1,2 JK1 IC1b IC2b CN6 CN8 SW 1 BOARD ASSY INPUT CN3 CN7 PANEL SW,LED JK2 IC2a IC21 CPU PHONES IC3 H8S/2318 CN2 CN2 SW 2 BOARD ASSY JK3 IC5a VR1a IC4a CODEC PEDAL SW,LED OUTPUT L AK4552 CN1 LCD UNIT CN11 OUTPUT R JK4 IC5b VR1b IC4b IC22 CN3 OUTPUT SRAM 1M VOLUME SW 3 BOARD ASSY IC20 DSP PEDAL SW,LED JK5 IC6a IC7a EXT OD/DS IC26 RETURN Flash 4M IC8 IC24 CODEC JK6 IC6b IC7b AK4552 DRAM 4M EXT OD/DS SEND R71 TR1 IC17 IC19 MAIN BOARD ASSY DIGITAL OUT TC9271FS CN7 CN6 CN8 CN3 CN7 CN2 CN1 IC26 Flash 4M