Casio CTK-555L User Manual Page 1

ELECTRONIC KEYBOARDCTK-631CTK-631ENTERCURSORENVELOPEENVELOPEENVELOPEAMP00 FLAT01-19 VIBRATO20-49 OTHERS000-048 DECAY049-137 SUSTAINPITCHREST(TIE)30123

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

— 9 —680‰50V22C341Q309R3401.5KAVDDAGAGAG50V22Q308C340C123HC346R342 R343 R3443.3K 4.7K 1K6.3V2202SC1740STPR2SC1740STPRR341C345C821BAC3391.5KR335C123HC3

— 10 —POWER AMPLIFIER (IC301: TA8248K)The power amplifier is a two-channel amplifier with standby switch.The following table shows the pin function of

— 11 —ADJUSTMENTDISPLAY PCB1) Items to be adjusted:2) Adjustment and Test Point Locations(TOP VIEW)Item Measuring InstrumentVop voltage setting Voltme

— 12 —3) Equipment connection/ProcedureVop voltage settingOutputSet VoltmeterTP1-TP2InputConnectionInputPointInputSignalAdjustOutputConnectionOutputPo

— 13 —MAJOR WAVEFORMS1 NMI signalJD connector pin 12 APO signalJH connector pin 65 Key scan signal KC0JA connector pin 96 Key scan signal KC1JA connec

— 14 —PRINTED CIRCUIT BOARDSMain PCB JCM454-MA1MTop ViewBottom View21093814756

— 15 —Sub PCB KDM454-MA2M12 11

— 16 —LCD PCB JCM454-LCD1M-ATop ViewBottom View

— 17 —SCHEMATIC DIAGRAMSMain PCB JCM454-MA1M210663415 69

CONTENTSSpecifications ...

— 18 —Sub PCB KDM454-MA2M1211

— 19 —Display PCB JCM454-LCD1M

— 20 —Keyboard PCBs JCM617T-KY1M/KY2M

— 21 —PCBs JCM454-CN1M, JCM454-CN2M,JCM454-CN3M,JCM454-CN4M

— 22 —LCDCommonSegment(121.0) V.A.(56.0) V.A.2.7384.6255.26(3.258)(4.595)3-0.35(5.26)7-0.35cross-pointcross-pointcross-pointcross-pointcross-pointcros

— 23 —LCDCommonSegmentAS2S3S4S5S6S7S8S9S10S11S12S13S14S15S16S17S18S19S20S21S22S23S24S25S26S27S28S29S30S31S32S33S34S35S36S37S38S39S40C1C2C3C4C5C6C7C12S

— 24 —EXPLODED VIEW1234567891011121314151617181418171920212223242526272829R-1R-2R-3

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

PARTS PRICE LIST CTK-631N ITEMCODE NO.PARTS NAMESPECIFICATION Q PRICE CODERMAIN PCBN1 6927 4340 PCB/ASSY(MA1M) M240991*1 1 DZ BLSI1 2012 5005 LSI/CPU

PARTS PRICE LIST CTK-631N ITEMCODE NO.PARTS NAMESPECIFICATION Q PRICE CODERPANEL UNITN12 6927 4690 RELECTOR M240939-1 1 AN B13 3122 3701 CFL HMBV4BG2W

— 1 —SPECIFICATIONSGENERALKeyboard: 61 standard-size keys, 5 octaves (with touch response on/off)Drum pads: 6Tones: 200 (128 General MIDI, 32 synthesi

CASIO TECHNO CO.,LTD.Overseas Service DivisionNishi-Shinjuku Kimuraya Bldg. 1F5-25, Nishi-Shinjuku 7-ChomeShinjuku-ku, Tokyo 160-0023, Japan

— 2 —ELECTRICALCurrent drain with 9 V DC: No sound output 412 mA ± 20 % Maximum volume 1165 mA ± 20 %with 12 keys from C3 to B3 pressed in Squ

— 3 —BLOCK DIAGRAMKC0 ~ KC7FI0 ~ FI9SI0 ~ SI9KI0 ~ KI2PB0 ~ PB3P10, P13P14, P17Working StorageRAM (256K-bit)LSI4TC55257DFL-70L(EL)MIDIEA0 ~ EA1

— 4 —KC0 KC1 KC2 KC3 KC4 KC5 KC6 KC7FI10 Chord 3 Chord 1 ▼ 9 6 + ToneKI0 Chord 4 Chord 2Start/8 3 — RhythmStopKI1 Chord 5 IntroTempo72 0Normal/▼ Fill-

— 5 —Reset ICIC2RN5VD40AADSPLSI2HG51B277FB-1VDDReset signalTo power supply circuitVDDBattery setRESETVDDPOWERFrom power switchNMIAPOPLECPULSI1GT913F(T

— 6 —CPU (LSI1: GT913F-(T))The 16-bit CPU contains a 1k-byte RAM, three 8-bit I/O ports, two timers, a key controller and serial interfaces.The CPU de

— 7 —DIGITAL SIGNAL PROCESSOR (LSI2: HG51B227FB-1)The DSP receives 16-bit serial sound data output from the CPU and adds the selected effect to the so