Casio CTK-520L Bedienungsanleitung

ELECTRONIC KEYBOARDCTK-520LCTK-520LTONE RHYTHM SONGPOWER/MODEFINGEREDCASIO CHORDNORMALONOFFVOLUME SYNCHRO/FILL-INSTART/STOPTEMPO¢⁄¢⁄TRANSPOS

— 7 —PRINTED CIRCUIT BOARDSSub PCB KDM446-MA2MTop viewMain PCB JCM446-MA1MBottom view Top view2451367

— 8 —SCHEMATIC DIAGRAMSMain PCB JCM446-MA1M5167234

— 9 —Sub PCB KDM446-MA2M

— 10 —Keyboard PCBs KDM6111K-KY1M/KY2M

— 11 —LED PCB KDM446-LD1M

— 12 —LED PCB KDM446-LD2M

— 13 —LED PCBs KDM446-LD3M/LD4M/LD5MKDM446-LD5M KDM446-LD4M KDM446-LD3M

1238951067411121313141516171819202122R-1R-3R-4R-5R-2R-6R-7R-7EXPLODED VIEW— 14 —

Notes: This parts list does not include the cosmetic parts, whichparts are marked with item No. "R-X" in the explodedview.Contact our spare

Item Code No. Parts Name Specification Q RMain PCB1 6925 1290 Main PCB ass'y M240438*1 1 BLSI1 2012 3430 LSI, CPU MSM6755B-07 1 ALSI2 2012 3843 L

CONTENTSPageSpecifications ...

Item Code No. Parts Name Specification Q R19 6925 1730Black key set, LSK-5P M140369-2 1A20 6922 3990Key contact rubberM111764-11A21 6922 4000Key conta

MA0800761AAug, 1996

— 1 —SPECIFICATIONSGENERALNumber of keys: 61Polyphonic: 12-notePreset tones: 100Transpose: F# ~ C ~ F: half-noteAuto-rhythms: 50, Tempo: Adjustable, 2

— 2 —ButtonsIlluminantKeyboard7 seg. LEDLED Latch IC2, IC3Q5 ~Q8Q1 ~Q4PGX1, Q11Reset ICIC1Q307Power Supply CircuitQ301 ~Q304D334, D335Amp.IC301LA459

— 5 —Amp.IC301Filter BlockQ305/Q306CPULSI1FILTER BLOCKSince the sound signal from the CPU is a stepped waveform, the filter block is added to smooth t

— 3 —CIRCUIT DESCRIPTIONKEY MATRIXKI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7KO0 C2 G#2 E3 C4 G#4 E5 C6 G#6KO1 C#2 A2 F3 C#4 A4 F5 C#6 A6KO2 D2 A#2 F#3 D4 A#4 F#5

— 4 —Pin No. Terminal In/Out Function1 MA14 Out Address bus2 MWEB Out Clock for LED latches3 NCO — Not used.4 ~ 19 MA0 ~ MA13 Out Address bus13 MRDB O

— 5 —Amp.IC301Filter BlockQ305/Q306CPULSI1FILTER BLOCKSince the sound signal from the CPU is a stepped waveform, the filter block is added to smooth t

— 6 —12453671 APO signalMSM6755B-07 pin 392 Reset signalRH5VL40AA pin 14 Sound signal (R-ch)JH connector pin 35 Sound signal (L-ch)JH connector pi