Casio CTK-811EX- Manuals

— 4 — Other functions Pitch bend range: Adjustable (12 semitones upwards and downwards) Modulation: Equipped Transpose: 25 steps (–12 semitones to +12 semitones) Tuning: Adjustable (A4 = approximately 440Hz ± 50 cents) Terminals MIDI terminal: IN, OUT Sustain/Assignable jack: Standard jack (sustain,...

— 5 — IMPORTANT OPERATION Full InitializationUse this procedure to return all keyboard settings to what they were when you purchased it. Note that thisprocedure clears all data from memory. • While holding down the ENTER button, turn on keyboard power. • Press YES to initialize the keyboard or NO to...

— 6 — BLOCK DIAGRAM Back Light Driver NT-07 Q501, Q502 ROM2 MSM23C3210MC -12CA89 LSI3 (32Mbit) ROM1 MSM27C802CZ-465 LSI2 (8Mbit) RAM2 TC551001BFL-70L LSI8 (1Mbit) VBR VBR VBR AVDD DVDD FVDD CVDD VCC VDD VC VDD APO NMI SWCK LSDT S1 IC1 LWR, RD S1 HWR, RD HWRRD RD, HWR, LWR RD, HWR, LWR 1RD, 1HWR, 1LW...

— 7 — KC0 KC1 KC2 KC3 KC4 KC5 KC6 KC7 FI0 C2 1 C#2 1 D2 1 D#2 1 E2 1 F2 1 F#2 1 G2 1 SI0 C2 2 C#2 2 D2 2 D#2 2 E2 2 F2 2 F#2 2 G2 2 FI1 G#2 1 A2 1 A#2 1 B2 1 C3 1 C#3 1 D3 1 D#3 1 SI1 G#2 2 A2 2 A#2 2 B2 2 C3 2 C#3 2 D3 2 D#3 2 FI2 E3 1 F3 1 F#3 1 G3 1 G#3 1 A3 1 A#3 1 B3 1 SI2 E3 2 F3 2 F#3 2 G3 2 ...

— 9 — MEMORY DEVICES Each memory device has the following data. 1 RAM1 :S-RAM for operation program, Register, Pattern, Songand SMF data from FDD. (Lower part of data bus) 2 RAM2 :S-RAM for operation program, Register, Pattern, Songand SMF data from FDD. (Upper part of data bus) 3 Internal ROM of CP...

— 10 — POWER SUPPLY CIRCUIT The power supply circuit provides various voltages as shown below.The voltage VDD (+5 V) is provided as long as batteries or AC adaptor is set.Other voltages are controlled by APO (Auto Power Off) signal from CPU. The regulator IC BA9700A generates square waveform from pi...

— 11 — DSP and DAC CIRCUIT The DSP (Digital Signal Processor) and DAC (Digital Analog Converter) consists of the following circuits. RA22 Working RAM (256K-bit) TC55257DFL-70L LSI5 ROM2 MX23C3210MC-12CA89 LSI3 (32Mbit) ROM1 MSM27CB02CZ-465 LSI2 (8Mbit) SOLP BOK WOK1 EA0 ~EA14 D0 ~D15 ED0 ~ED15 KC0 ~...

— 13 — LCD BACKLIGHT When voltage CVDD is supplied, transistors Q501 and Q502 start oscillation.From the oscillation voltage, transformer T501 generates about 600 V which is necessary for lighting thebacklight. 10 1 1 1 C502 (Bottom View) NT-07 T501 CFL1 L501 LHL08TB101K 1 1 12 DG CVDD C104FA C104M ...

— 21 — DAC (LSI1: UPD6376GS) UPD6376GS is a two-channel 16-bit Digital to Analog Convertor consisting of resistor string, output ampli-fier and zero offset circuit.The DAC receives 16-bit serial data output from the DSP. The data contains digital sound data of themelody, chord, bass, and percussion ...

— 22 — DIAGNOSTIC PROGRAM ■ To enter diagnostic mode 1. While pressing down “0” and “ACCOMP CHORD MODE” buttons, press “POWER” button for turning on. 2. The instrument is set in diagnostic mode and display indicates “Test”. ■ Button check 1. Press “0” button. 2. Display indicates “Console”. 3. Press...

— 23 — ■ Bender check 1. While pitch bender is left untouched, press “–” button. 2. Display indicates “Bender”. 3. If the bender’s center point is adjusted correctly, the instrument emits verification sound. If the center point is improper, an error alarm sounds and display indicates “Bend ER” and t...

— 25 — ■ LCD test 1. Press “CURSOR ← ” button. 2. Display indicates “LCD OK”. 3. Each pressing of “CURSOR ← ” button, displays following patterns in the following order with verifica- tion sound. a. Checker on 8 character block : pattern Ab. Checker on 8 character block : pattern Bc. Checker on pixe...

— 26 — <Other utilities> ■ Bender reset Sets bender’s center point in initial value. 1. While pressing down “ENTER” and “ACCOMP CHORD MODE” buttons, turn the power on. 2. Display shows “BndReset” indicating that pitch bender’s center point is initialized. 3. Perform the “System reset” describe...

— 27 — FDD ERROR MESSAGE Error Message Reason of Error The file being written to is read-only. The disk format is not one supported by this key-board. Error occurred during reading from the disk. Disk is full. Not enough memory to perform the process.No memory is available to load data. An attempt w...

— 28 — MAJOR WAVEFORMES 1 Clock signal for CPUCheck point CP1 2 Clock signal for DSPCheck point CP2 3 Voltage VDDIC3 pin 2 4 Reset signal RESIC3 pin 1 1 2 3 4 5 NMI signalLSI9 pin 64 6 Reset signal RESBLSI9 pin 87 7 Sound signal L-OUTJC connector pin 10 8 Sound signal L-VOL0OUTJG connector pin 5 Ton...

— 29 — 6 5 2 9 10 PRINTED CIRCUIT BOARD Main PCB JCM465-MA1M Top View Bottom View 1 12 11 4 3

— 31 — EXPLODED VIEW 1 43 42 46 44 26 25 45 48 48 47 47 3 4 7 24 23 32 29 38 37 36 35 30 31 34 40 39 41 40 33 22 11 12 14 13 15 16 17 19 20 27 21 22 28 23 18 8 9 10 5 6 2 R-1 R-3 BT1 R-4 R-2

— 32 — I t e m Code No. Parts Name S p e c i f i c a t i o n Q R MA1M PCB 1 6926 8930 PCB/ASSY (MA1M) M240837*1 1 A LSI1 2114 4221 LSI UPD6376GS-E1 1 A LSI2 2012 6135 LSI MX23C8100MC-12CA99 1 A (LSI2) (2012 6062) (LSI) (MSM27C802CZ-465) (1) (A) LSI3 2012 6064 LSI MX23C3210MC-12CA89 1 A LSI4 2011 743...

— 35 — SCHEMATIC DIAGRAMS MainPCB JCM465-MA1M DSP ROM1 RAM1 D/A Converter To FDD Unit FDD Controller Backup Power ROM2 RAM2 Reset IC CPU Key Controller Working RAM 12 11 2 3 5 10 9 6 4 1

— 38 — LCD Driver CAUTION High V oltage VoltageRegulator Back Light Circuit LCD Driver PCB JCM465-LCD1M

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