Casio LK-90TV Manual de usuario
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)
<Advanced 3-Step Lesson System>
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
SP
SP
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
KC
SI
21
NOMENCLATURE OF KEYS
C2 C3 C4 C5 C6 C7
—5 —
BUTTON MATRIX
5
6
8
REP
9
PIANO
BANK
CARD
PLAY/STOP
KEY CONTROL/
TRANSPOSE ,
REW
PLAY/STOP
DEMO
TEMPO
,
–
3
0
+
SCORING3
2
1
–
TONE
7
4
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 /
FF
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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