Casio CTK-330 User Manual

POWER/MODEFINGEREDCASIO CHORDNORMALOFFONVOLUME SYNCHRO/FILL-INSTART/STOPTEMPOTRANSPOSE/TUNEPIANO00PIANO 101PIANO 202HONKY-TONK03STUDIO PIANO04ELEC

— 8 —SCHEMATIC DIAGRAMSMain PCB KDM441-MA1M/MA2M123547698

— 9 —Keyboard PCBs KDM4910K-KY1M/KY2M

— 10 —PRINTED CIRCUIT BOARDMain PCB KDM441-MA1M4 52316789

EXPLODED VIEW123456789101112131414R-1R-2R-3R-4R-5R-6— 11 —

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 4480 Main PCB ass'y M441-MA1,2M M140451*1 1 BLSI101 2012 3948 LSI, CPU MSM6755B-08 1 AIC

MA0800761AAug, 1996

— 2 —CONTENTSSpecifications ...

— 3 —CPUMSM 6755B-08LSI101KeyboardButtonsLEDReset ICIC102OscillatorX101, Q107Q111Power Supply CircuitQ101 ~ Q104, D106Power Amp.LA4598IC101Fi

— 2 —KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7KO0 C2 G#2 E3 C4 G#4 E5 C6KO1 C#2 A2 F3 C#4 A4 F5KO2 D2 A#2 F#3 D4 A#4 F#5KO3 D#2 B2 G3 D#4 B4 G5KO4 E2 C3 G#3 E4

— 3 —Amp.LA4598FilterBlockCPUMSM6755B-08Pin No. Terminal In/Out Function1 ~ 29 MA14 ~ NC2 — Not used.30 DGND In Ground (0 V) source31 DVCC In +5 V

— 4 —CPULSI101MSM6755BLa~Lg, LpCC1~CC3LVDDQ106~Q108LED DriverPOWER AMPLIFIER (IC101: LA4598)The power amplifier is a two-channel amplifier with sta

— 5 —Amp.LA4598FilterBlockCPUMSM6755B-08Pin No. Terminal In/Out Function1 ~ 29 MA14 ~ NC2 — Not used.30 DGND In Ground (0 V) source31 DVCC In +5 V

— 6 —CPULSI101MSM6755BLa~Lg, LpCC1~CC3LVDDQ106~Q108LED DriverPOWER AMPLIFIER (IC101: LA4598)The power amplifier is a two-channel amplifier with sta

— 7 —MAJOR WAVEFORMS1 Clock pulseMSM6755B-08 pin 322 Reset signalMSM6755B-08 pin 353 APO signalMSM6755B-08 pin 3914523764 Sound waveform (R-ch)MSM6755