Casio_AP-24_Service_Manual.pdf

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AP-24
JUN. 2004
AP-24
ELECTRONIC KEYBOARD
INDEX
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
SPECIFICATIONS
GENERAL
Keyboard:
Polyphony:
Tones:
Digital Effects:
Demo Tunes:
User Songs:
Memory:
88 piano keys (with touch response)
32 notes, maximum
10 tones (including two low-range tones for split), with layer and split
Reverb (4 types), Chorus (4 types)
• Number of Tunes: 8
• Playback: Repeat (all tunes)
• Number of Songs: Up to 10 download songs
• Capacity: Approximately 7600 notes (45 kilobytes)
• Operations: Real-time recording, playback
• Capacity: Approximately 5,200 notes (2 tracks)
• Memory Backup: Built-in lithium battery (Battery Life: 5 years)
Damper, Soft/Sostenuto (Selectable)
• 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)
16 multi-timbre receive
• Headphones: Stereo standard jacks
×
2
• MIDI (OUT) (IN)
ø12cm
×
2 (Output: 20 W + 20 W)
AP-24: 120V
AP-24V: 220-240V
AP-24: 55W
AP-24V: 58W
• 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)
• Digital Piano (without stand): approximately 34.0 kg (75.0 lbs)
•Digital Piano: Approximately 44.0 kg (97.0 lbs)
Pedals:
Other Functions:
MIDI:
Input/Output:
Speakers:
Power Supply:
Power Consumption:
Dimensions:
Weight:
—1—
LED
Button/LED Controller
UPD65881GK-002-9ET
Button
IC601
TXDO
DAMP, SOFT, STENT
MA1~20
MD0~15
MA1~16
RXDI
PEDAL
MPU
ML6763B-NNTC-116
IC4
FI0~10
SI0~10
KC0~7
ROM(8MB)
MR27V3202F 16NTNZ08
IC5
RAM(128K×16 Static RAM)
CY62126DV30LL55ZIT
MD0~15
Keyboard
IC6
MIDI
IN
MIN
BLOCK DIAGRAM
—2—
BCK, SD0, LRCK
D/A Converter
UPD63200GS
IC8
Filter
NJM2068M
IC11
Main Volume
Filter
NJM2068M
IC12
Filter
NJM2068M
IC205
R
LINE IN
L
R
LINE OUT
L
SP
Mute
Power AMP
LA4636
IC203
Filter
NJM2068M
IC204
OUT
MOUT
RESET
RESET
IC15, Q7
SP
Power Supply
IC202, Q205, D207
VC
VF
VD5(5V)
VA15(15V)
L
R
HEADPHONE
CIRCUIT DESCRIPTION
KEY MATRIX
Second contact
First contact
FI
2
1
KC
SI
KC0
FI0
SI0
FI1
SI1
FI2
SI2
FI3
SI3
FI4
SI4
FI5
SI5
FI6
SI6
FI7
SI7
FI8
SI8
FI9
SI9
FI10
SI10
A01
A02
F11
F12
C2#1
C2#2
A21
A22
F31
F32
C4#1
C4#2
A41
A42
F51
F52
C6#1
C6#2
A61
A62
F71
F72
KC1
A0#1
A0#2
F1#1
F1#2
D21
D22
A2#1
A2#2
F3#1
F3#2
D41
D42
A4#1
A4#2
F5#1
F5#2
D61
D62
A6#1
A6#2
F7#1
F7#2
KC2
B01
B02
G11
G12
D2#1
D2#2
B21
B22
G31
G32
D4#1
D4#2
B41
B42
G51
G52
D6#1
D6#2
B61
B62
G71
G72
KC3
C11
C12
G1#1
G1#2
E21
E22
C31
C32
G3#1
G3#2
E41
E42
C51
C52
G5#1
G5#2
E61
E62
C71
C72
G7#1
G7#2
LSI (IC4)
ML6763B-NNTC-116
KC4
C1#1
C1#2
A11
A12
F21
F22
C3#1
C3#2
A31
A32
F41
F42
C5#1
C5#2
A51
A52
F61
F62
C7#1
C7#2
A71
A72
KC5
D11
D12
A1#1
A1#2
F2#1
F2#2
D31
D32
A3#1
A3#2
F4#1
F4#2
D51
D52
A5#1
A5#2
F6#1
F6#2
D71
D72
A7#1
A7#2
KC6
D1#1
D1#2
B11
B12
G21
G22
D3#1
D3#2
B31
B32
G41
G42
D5#1
D5#2
B51
B52
G61
G62
D7#1
D7#2
B71
B72
KC7
E11
E12
C21
C22
G2#1
G2#2
E31
E32
C41
C42
G4#1
G4#2
E51
E52
C61
C62
G6#1
G6#2
E71
E72
C81
C82
NOMENCLATURE OF KEYS
A#0
C#1 D#1
F#1 G#1 A#1 C#2 D#2
F#2 G#2 A#2 C#3 D#3
F#3G#3 A#3
C#4D#4
F#4G#4A#4
C#5D#5
F#5G#5A#5 C#6 D#6
F#6 G#6 A#6
C#7 D#7
F#7G#7A#7
A0 B0 C1 D1 E1 F1 G1 A1 B1 C2 D2 E2 F2 G2 A2 B2 C3 D3 E3 F3 G3 A3 B3 C4 D4 E4 F4 G4 A4 B4 C5 D5 E5 F5 G5 A5 B5 C6 D6 E6 F6 G6 A6 B6 C7 D7 E7 F7 G7 A7 B7 C8
BUTTON MATRIX
KI0
KC0
KC1
KC2
CONTROL
SPLIT
START/STOP
KI1
—
METRONOME
RECORD
—3—

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