Casio Celviano AP-24 Manual de usuario
ELECTRONIC KEYBOARD
AP-24
JUN. 2004
AP-24
CONTENTS
Specifications ---------------------------------------------------------------------------------------------- 1
Block Diagram --------------------------------------------------------------------------------------------- 2
Circuit Description --------------------------------------------------------------------------------------- 3
Printed Circuit Board ------------------------------------------------------------------------------------ 4
Disassembly ------------------------------------------------------------------------------------------------ 6
Diagnostic Program------------------------------------------------------------------------------------ 15
Schematic Diagrams----------------------------------------------------------------------------------- 17
Exploded View ------------------------------------------------------------------------------------------- 26
Parts List--------------------------------------------------------------------------------------------------- 28
— 1 —
SPECIFICATIONS
GENERAL
Keyboard: 88 piano keys (with touch response)
Polyphony: 32 notes, maximum
Tones: 10 tones (including two low-range tones for split), with layer and split
Digital Effects: Reverb (4 types), Chorus (4 types)
Demo Tunes: • Number of Tunes: 8
• Playback: Repeat (all tunes)
User Songs: • Number of Songs: Up to 10 download songs
• Capacity: Approximately 7600 notes (45 kilobytes)
Memory: • Operations: Real-time recording, playback
• Capacity: Approximately 5,200 notes (2 tracks)
• Memory Backup: Built-in lithium battery (Battery Life: 5 years)
Pedals: Damper, Soft/Sostenuto (Selectable)
Other Functions: • Metronome: Beat (6 types), Tempo ( = 30 to 255)
• Touch Select: 3 types, off
• Transpose: 1 octave (F# to C to F)
• Tuning:A4 = 440Hz ±50 cents (adjustable)
MIDI: 16 multi-timbre receive
Input/Output: • Headphones: Stereo standard jacks ×2
• MIDI (OUT) (IN)
Speakers: ø12cm ×2 (Output: 20 W + 20 W)
Power Supply: AP-24: 120V
AP-24V: 220-240V
Power Consumption: AP-24: 55W
AP-24V: 58W
Dimensions: • Digital Piano (without stand): 137.2 u 42.3 u 20.5 cm (54 1/16 ×16 11/16 ×8 1/16 inch)
• Digital Piano: 138.5 ×43.2 ×81.0 cm (54 9/16 ×17 ×31 15/16 inch)
Weight: • Digital Piano (without stand): approximately 34.0 kg (75.0 lbs)
•Digital Piano: Approximately 44.0 kg (97.0 lbs)
— 2 —
BLOCK DIAGRAM
Power AMP
LA4636
IC203
Filter
NJM2068M
IC12
D/A Converter
UPD63200GS
IC8
RESET
IC15, Q7
Filter
NJM2068M
IC11
ROM(8MB)
MR27V3202F 16NTNZ08
IC5
Main Volume
Mute
BCK, SD0, LRCK
RXDITXDO
HEADPHONE
MIDI
Keyboard
LED
Button/LED Controller
UPD65881GK-002-9ET
IC601
MPU
ML6763B-NNTC-116
IC4
Button
IN
OUT
PEDAL
FI0~10
SI0~10
KC0~7
MA1~20
MD0~15
RAM(128K×16 Static RAM)
CY62126DV30LL55ZIT
IC6
VC
VF
VD5(5V)
VA15(15V)
Power Supply
IC202, Q205, D207
MA1~16
MD0~15
SPSP
RESET
MOUT
MIN
DAMP, SOFT, STENT
LR
LINE OUT
LINE IN
L
R
L
R
Filter
NJM2068M
IC205
Filter
NJM2068M
IC204
—3 —
CIRCUIT DESCRIPTION
KEY MATRIX
FI
KC
SI
LSI (IC4)
ML6763B-NNTC-116
Second contact First contact
1
2
NOMENCLATURE OF KEYS
F#3G#3A#3 C#4D#4 F#4G#4A#4 C#5D#5 F#5G#5A#5
F3 G3 A3 B3 C4 D4 E4 F4 G4 A4 B4 C5 D5 E5 F5 G5 A5 B5 C6
D#3
C2 D2 E2 F2 G2 A2 B2 C3 D3 E3 B6A6G6F6E6D6 C7
C#3A#2G#2F#2D#2C#2
C1 D1 E1 F1 G1 A1 B1A0 B0
A#1A#0 G#1F#1D#1C#1 A#6G#6F#6D#6C#6
B7A7G7F7E7D7 C8
A#7G#7F#7D#7
C#7
BUTTON MATRIX
KC0 KC1 KC2 KC3 KC4 KC5 KC6 KC7
FI0 A01A0#1B01C11C1#1D11D1#1E11
SI0 A02A0#2B02C12C1#2D12D1#2E12
FI1 F11F1#1G11G1#1A11A1#1B11C21
SI1 F12F1#2G12G1#2A12A1#2B12C22
FI2 C2#1D21D2#1E21F21F2#1G21G2#1
SI2 C2#2D22D2#2E22F22F2#2G22G2#2
FI3 A21A2#1B21C31C3#1D31D3#1E31
SI3 A22A2#2B22C32C3#2D32D3#2E32
FI4 F31F3#1G31G3#1A31A3#1B31C41
SI4 F32F3#2G32G3#2A32A3#2B32C42
FI5 C4#1D41D4#1E41F41F4#1G41G4#1
SI5 C4#2D42D4#2E42F42F4#2G42G4#2
FI6 A41A4#1B41C51C5#1D51D5#1E51
SI6 A42A4#2B42C52C5#2D52D5#2E52
FI7 F51F5#1G51G5#1A51A5#1B51C61
SI7 F52F5#2G52G5#2A52A5#2B52C62
FI8 C6#1D61D6#1E61F61F6#1G61G6#1
SI8 C6#2D62D6#2E62F62F6#2G62G6#2
FI9 A61A6#1B61C71C7#1D71D7#1E71
SI9 A62A6#2B62C72C7#2D72D7#2E72
FI10 F71F7#1G71G7#1A71A7#1B71C81
SI10 F72F7#2G72G7#2A72A7#2B72C82
KI0 KI1
KC0 CONTROL —
KC1 SPLIT METRONOME
KC2 START/STOP RECORD
—4 —
PRINTED CIRCUIT BOARD
MAIN PCB M420-MAA1
Bottom view
Top view
— 5 —
SUB PCB M420-PSA1
Bottom view
Top view
CONSOLE PCB M420-PSA3
LED PCB M420-PSA4
POWER SUPPLY PCB M420-ACA1 JACK PCB M420-PSA2
— 6 —
DISASSEMBLY
■ To remove the piano from the stand
1. Remove the pedal plug from the pedal connector
on the bottom of the piano, and then remove the
pedal cord from the clip.
2. Remove two butterfly bolts.
Slide the piano toward the rear side, and then
remove it from the brackets.
Bracket
Butterfly boltAscrew
Frontside
Rear side
B screws
Cscrews
Pedal plug
Clip
■ To remove the pedal from the stand
1. Remove the two B screws and six C screws. 2. Remove four screws.
— 7 —
■ To remove the top board
1. Remove eight screws. 2. Slide the top board toward the front side. Next,
lift the top board and remove it from the piano.
■ To remove the keyboard cover
1. Close the keyboard cover.
2. Remove one screw and the bracket. 3. Lift the gear part upward(1), and then slide the
keyboard cover toward the rear side (2) to
remove it.
1
2
1
2
— 8 —
■ To remove the keyboard
1. Remove the twoA screws on the front side and the panel.
2. Remove the three C screws on the back side. Next, remove the eight B screws on the front side and remove
the bracket.
Front side
Back side
A screw B screws C screws
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