Casio LK-90TV Bedienungsanleitung

ELECTRONIC KEYBOARD

LK-90TV

JUN. 2004

LK-90TV

Ver.1 : Jun. 2005

INDEX

CONTENTS

Specifications ---------------------------------------------------------------------------------------------- 1

Block Diagram --------------------------------------------------------------------------------------------- 3

Circuit Description --------------------------------------------------------------------------------------- 4

Printed Circuit Board ------------------------------------------------------------------------------------ 6

Disassembly ---------------------------------------------------------------------------------------------- 13

Diagnostic Program------------------------------------------------------------------------------------ 19

Schematic Diagrams----------------------------------------------------------------------------------- 22

Exploded View ------------------------------------------------------------------------------------------- 31

Parts List--------------------------------------------------------------------------------------------------- 32

— 1 —

SPECIFICATIONS

GENERAL

Model: LK-90TV/LK-92TV

Keyboard: 61 standard-size keys, 5 octaves (with touch response; 1, 2, off)

Key Light System: Can be turned on and off (up to 10 keys can be lit at the same time)

Tones: 264 (128 panel tones + 128 General MIDI tones + 8 drum sets); with layer and split

Rhythm Instrument Tones: 61

Polyphony: 32 notes maximum (16 for certain tones)

Auto Accompaniment

Rhythm Patterns: 120

Tempo: Variable (226 steps, = 30 to 255)

Chords: 3 fingering methods (CASIO CHORD, FINGERED, FULL RANGE CHORD)

Rhythm Controller: START/STOP, INTRO, NORMAL/FILL-IN, VARIATION/FILL-IN,

SYNCHRO/ENDING

Accomp Volume: 0 to 127 (128 steps)

3-step Lesson: 3 lessons (Step 1, 2, 3)

Playback: Repeat play of a single tune

Evaluation Mode: Scoring 1, Scoring 2, Scoring 3, Phrase Practice

Voice Fingering Guide: On/Off

Song Bank, Piano Bank

Number of Tunes: 100 (Song Bank/Sing Along: 65, Piano Bank: 35)

Controllers: PLAY/STOP, PAUSE, FF, REW, LEFT/RIGHT, REPEAT

User Songs: Number of Songs: Up to 5 download songs

Capacity: Approximately 80 kilobytes

Sing Along Mode

Number of Tunes: Song Bank/Sing Along: 65

Controllers: PLAY/STOP, KEY CONTROL (25 steps, –12 semitones to +12 semitones)

Metronome: On/Off

Beat Specification: 0, 2 to 6

Song Memory

Number of Songs: Two (1 Lesson Recording, 1 Performance Recording)

Recorded Data: Lesson Recording: Right-hand part, left-hand part, both-hand parts

Performance Recording: Track 1 (chord accompaniment), Track 2 (melody)

Recording Method: Real-time

Memory Capacity: Approximately 5,200 notes (two songs)

Other Functions

Transpose: 25 steps (–12 semitones to +12 semitones)

Tuning: 101 steps (A4 = approximatery 440Hz ±50Cents)

Card Slot: 3.3V SmartMediaTM (8MB, 16MB, 32MB, 64MB, 128MB)

Functions: Playback of SMF; card formatting

— 2 —

Terminals

SUSTAIN/ASSIGNABLE JACK

: Standard jack (sustain, sostenuto, soft, rhythm start/stop)

HEADPHONE/OUTPUT Jack

: Stereo standard jack

Output Impedance: 100Ω

Output Voltage: 4V (RMS) MAX

Microphone In:Standard jack (with microphone volume knob)

Input impedance: 3KΩ

Input sensitivity: 10mV

USB port

VIDEO OUT Jack: Output Voltage: 1Vp-p MAX

Power Jack: 9V DC

Power Supply: 2-way

Batteries: 6 AA-size batteries

Battery Life: Approximately 2.5 hours continuous operation on alkaline batteries

AC Adaptor: AD-5

Auto Power Off: Turns power off approximately 6 minutes after last key operation. Enabled under batter

power only, can be disabled manually.

Speaker Output: 2.5W + 2.5W

Power Consumption: 9V 7.7W

Dimensions: 94.4 ×38.7 ×14.2 cm (37 3/16 ×15 1/4×5 9/16 inch)

Weight: Approximately 5.1kg (11.2 lbs)(without batteries)

• Design and specifications are subject to change without notice.

— 3 —

BLOCK DIAGRAM

Power AMP

LA4635A

IC202

RESET

IC3, Q24

ROM(4MB)

MR27V3202F

IC42

Main Volume

RXDI

RXDI, TXDO

TXDO

HEADPHONE

Keyboard

LCD Controller

ML-9040-B02GA

IC1 (SCH-M649-LCA PCB) Button

LCD

FI0~7

SI0~7

KC0~7

MD0~15

RAM(1MB)

CY62126DV30LL55ZI

IC18

Monitor Output

Controller

IC15(SPG200A-HL091)

IC43(MR27V802F)

Keyboard LED Controller

UPD65881GK-1019-ETA

IC27

VD5(5.3V)

VE5(5V)

VA5(5.2V)

VC9(9.0V)

VCP(9.0V)

Power Supply

Q2 ~ D9

D4 ~ D7

MD0~15

RESET

C-TVSYG

SYSRSTB

TV-RXD

TV-TXD

Sustain Jack

Monitor Jack

MA1~21

MA1~17

MPU

ML6763-NNTC-116

IC1

MIC MIC VR

Filter

NJM2068DD

IC3

Filter

NJM2068DD

IC1

(M649-MAA2 PCB)

— 4 —

KC0 KC1 KC2 KC3 KC4 KC5 KC6 KC7

FI0 C21C2#1D21D2#1E21F21F2#1G21

SI0 C22C2#2D22D2#2E22F22F2#2G22

FI1 G2#1A21A2#1B21C31C3#1D31D3#1

SI1 G2#2A22A2#2B22C32C3#2D32D3#2

FI2 E31F31F3#1G31G3#1A31A3#1B31

SI2 E32F32F3#2G32G3#2A32A3#2B32

FI3 C41C4#1D41D4#1E41F41F4#1G41

SI3 C42C4#2D42D4#2E42F42F4#2G42

FI4 G4#1A41A4#1B41C51C5#1D51D5#1

SI4 G4#2A42A4#2B42C52C5#2D52D5#2

FI5 E51F51F5#1G51G5#1A51A5#1B51

SI5 E52F52F5#2G52G5#2A52A5#2B52

FI6 C61C6#1D61D6#1E61F61F6#1G61

SI6 C62C6#2D62D6#2E62F62F6#2G62

FI7 G6#1A61A6#1B61C71

CIRCUIT DESCRIPTION

KEY MATRIX

Note: Each key has two contacts, the first contact 1and second contact 2.

Key

Second contact First contact FI

NOMENCLATURE OF KEYS

C2 C3 C4 C5 C6 C7

—5 —

BUTTON MATRIX

REP

PIANO

BANK

CARD

PLAY/STOP

KEY CONTROL/

TRANSPOSE ,

REW

PLAY/STOP

DEMO

TEMPO

–

SCORING3

–

TONE

METRONOME

RHYTHM

SONG BANK

–

SCORING1

PRACTICE

PHRASE

STEP 1

SCORING2

LAYER

TRACK 2

RIGHT

–

STEP 2

STEP 3

SPEAK

SPLIT

TRACK1

LEFT

–

SONG

MEMORY

KEY CONTROL/

TRANSPOSE /

TOUCH

RESPONSE/

SETTIN

KEY LIGHT

TEMPO

–

PAUSE

SING

ALONG

MODE

(NOMAL)

MODE

(CASIO

CHORD)

MODE

(FINGERED)

MODE

(FULL RANGE

CHORD)

–

SWO0

SWO1

SWO2

SWO3

SWO4

SWO5

SWO6

SWI0 SWI1 SWI2 SWI3 SWI4 SWI5 SWI6 SWI7

LED MATRIX

DATA

ACCESS

–

RHYTHM

ST/SP

SONG

ST/SP

LL1

LL2

LH21 LH22

KEY LED MATRIX

L0 L1 L2 L3 L4 L5 L6 L7 L8 L9 L10

L21 A2# F4 B4 E5 A5 D6 G6 C7 A6# G6# F6#

L22 G2# E4 A4 D5 G5 C6 F6 B6 A5# C6# D6#

L23 C2 D4 G4 C5 F5 B5 E6 A6 G5# F5# D5#

L11 L12 L13 L14 L15 L16 L17 L18 L19 L20

L21 C3# D3# F3# G2 C3 F3 D4# C4# A3# G3#

L22 F2# D2# C2# F2 B2 E3 F4# G4# A4# C5#

L23 D2 E2 A2 D3 G3 A3 B3 C4

— 6 —

PRINTED CIRCUIT BOARDS

M649-MAIN PCB

Bottom View

Top View

— 7 —

M649-SUB1 PCB M649-SUB2 PCB

Bottom View

Top View Bottom View

Top View

— 8 —

M649-CONSOLE PCB

Top View

Bottom View

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