GM SOUND KEYBOARDCTK-811EXJUL.1998CTK-8112-WAYBASS REFLEX SPEAKERMODULATIONPITCH BEND2-WAYBASS REFLEX SPEAKER232 TONES16 CHANNEL MIXERTEMPOREGISTRATIO

— 9 —MEMORY DEVICESEach memory device has the following data.1 RAM1 :S-RAM for operation program, Register, Pattern, Songand SMF data from FDD. (Lower

— 10 —POWER SUPPLY CIRCUITThe power supply circuit provides various voltages as shown below.The voltage VDD (+5 V) is provided as long as batteries or

— 11 —DSP and DAC CIRCUITThe DSP (Digital Signal Processor) and DAC (Digital Analog Converter) consists of the following circuits.RA22Working RAM (256

— 12 —FDD UNIT (DF354H064A)FDD Specifications:1 Memory Capacity (under un-format) : 1.6 MByte2 Density of track : 5.33 track/mm (135 TPI)3 Number of t

— 13 —LCD BACKLIGHTWhen voltage CVDD is supplied, transistors Q501 and Q502 start oscillation.From the oscillation voltage, transformer T501 generates

— 14 —Pin No. Terminal In/Out Function1 VCC In VCC (5 V) source.2 ~ 5 PB0 ~ PB3 Out Data bus for LCD driver.6 PB4 Out Chip enable signal for LCD drive

— 15 —Pin No. Terminal In/Out Function80 P72 In AC adaptor detection terminal.81 P73 In Modulation signal input.82 P74 In Pedal signal input.83 P75 In

— 16 —DIGITAL SIGNAL PROCESSOR (LSI4:HG51A115A01FD)Upon receipt of note numbers and their velocities, the DSP (Digital Signal Processor) reads sound a

— 17 —FDD CONTROLLER (LSI6:HD63266F)The FDD (Floppy Disk Drive) controller can control the FDD unit.The controller contains not only analog VFO (Varia

— 18 —Pin No. Terminal In/Out Function30 INP In Disk detection signal.31 READY In Ready signal from FDD. (Connected to ground (0V).)32 WPRT In Write p

— 1 —CONTENTSSafety Notice ----------------------------------------------------------------------------------------------- 2Specifications -----------

— 19 —KEY TOUCH LSI (LSI10: TC190C020AF-001)By counting the time between first-key input signal FI and second-key SI from the keyboard unit, the keyto

— 20 —LCD DRIVER (LSI501: SED1278F2A)The LCD driver can drive a dot matrix LCD having 40 segment and 16 common lines. The LSI contains 240graphic symb

— 21 —DAC (LSI1: UPD6376GS)UPD6376GS is a two-channel 16-bit Digital to Analog Convertor consisting of resistor string, output ampli-fier and zero of

— 22 —DIAGNOSTIC PROGRAM To enter diagnostic mode1. While pressing down “0” and “ACCOMP CHORD MODE” buttons, press “POWER” button for turningon.2. Th

— 23 — Bender check1. While pitch bender is left untouched, press “–” button.2. Display indicates “Bender”.3. If the bender’s center point is adjuste

— 24 — RAM check1. Press “3” button.2. The program executes write/read test in all the RAM area.3. When the RAM is proper, display indicates “RAM OK”

— 25 — LCD test1. Press “CURSOR ←” button.2. Display indicates “LCD OK”.3. Each pressing of “CURSOR ←” button, displays following patterns in the fol

— 26 —<Other utilities> Bender resetSets bender’s center point in initial value.1. While pressing down “ENTER” and “ACCOMP CHORD MODE” buttons,

— 27 —FDD ERROR MESSAGEError Message Reason of ErrorThe file being written to is read-only.The disk format is not one supported by this key-board.Erro

— 28 —MAJOR WAVEFORMES1 Clock signal for CPUCheck point CP12 Clock signal for DSPCheck point CP23 Voltage VDDIC3 pin 24 Reset signal RESIC3 pin 112345

— 2 —SAFETY NOTICECAUTION!Danger of explosion if battery is incorrectly replaced. Replaceonly with the same or equivalent type.ADVARSE!Lithiumbatteri.

— 29 —6 529 10PRINTED CIRCUIT BOARDMain PCB JCM465-MA1MTop ViewBottom View1121143

— 30 —Sub PCB JCM465-MA2MTop View78

— 31 —EXPLODED VIEW1434246442625454848474734724233229383736353031344039414033221112141315161719202721222823188910562R-1R-3BT1R-4R-2

— 32 —Item Code No. Parts Name Specification Q RMA1M PCB1 6926 8930 PCB/ASSY (MA1M) M240837*1 1 ALSI1 2114 4221 LSI UPD6376GS-E1 1 ALSI2 2012 6135 LSI

— 33 —Item Code No. Part Name Specification Q RQ504 2252 0154 TRANSISTOR 2SC1740SS-TP-T 1 BD501 2360 3056 DIODE/ZENER HZS6A2LTD-T 1 CD502 2390 1344 DI

— 34 —Item Code No. Part Name Specification Q RAccessory6926 9540 STAND/MUSIC M140744-1 1 C6926 9210 DISK/FLOPPY 811FD-PRG 1 X6926 9220 DISK/FLOPPY (O

— 35 —SCHEMATIC DIAGRAMSMainPCB JCM465-MA1MDSPROM1RAM1D/A ConverterTo FDD UnitFDD ControllerBackup PowerROM2RAM2Reset ICCPUKey ControllerWorkingRAM121

— 36 —SubPCB JCM465-MA2MPower Amp.LPF (R)Power SupplyRegulator ICLPF (L)78

— 37 —S-RegisterS-RegisterConsole PCBs JCM465-CN1M/CN2M/CN3M

— 38 —LCD DriverCAUTIONHigh VoltageVoltageRegulatorBack Light CircuitLCD Driver PCB JCM465-LCD1M

— 3 —SPECIFICATIONSGENERALKeyboard: 61 standard-size keys, 5 octaves (with touch response on/off; ExLight/Light/Normal/Heavy touch)Tones: 232 (128 Gen

— 39 —Keyboard PCBs JCM618T-KY1M/KY2M

CASIO TECHNO CO.,LTD.Overseas Service Division8-11-10, Nishi-ShinjukuShinjuku-ku, Tokyo 160-0023, Japan

— 4 —Other functionsPitch bend range: Adjustable (12 semitones upwards and downwards)Modulation: EquippedTranspose: 25 steps (–12 semitones to +12 sem

— 5 —IMPORTANT OPERATIONFull InitializationUse this procedure to return all keyboard settings to what they were when you purchased it. Note that thisp

— 6 —BLOCK DIAGRAMBack Light DriverNT-07Q501, Q502ROM2MSM23C3210MC -12CA89LSI3 (32Mbit)ROM1MSM27C802CZ-465LSI2 (8Mbit)RAM2TC551001BFL-70LLSI8

— 7 —KC0 KC1 KC2 KC3 KC4 KC5 KC6 KC7FI0 C2 1 C#2 1 D2 1 D#2 1 E2 1 F2 1 F#2 1 G2 1SI0 C2 2 C#2 2 D2 2 D#2 2 E2 2 F2 2 F#2 2 G2 2FI1 G#2 1 A2 1 A#2 1 B

— 8 —KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7KC0 MODE INTRO CH8 A CH16 SPLITKC1 RECORD CH1 CH9 B E 2KC2 SONG CH2 CH10 C H RHYTHM 5KC3 PATTERN CH3 CH11 D ENTER