Casio CDP-120 Fehlerbehebungshandbuch

CDP-120

Ver. 1 : Dec. 2012

CDP-120

JUL. 2011

ELECTRONIC KEYBOARD

CDP-120

CONTENTS

SPECIFICATIONS........................................................................................... 1

BLOCK AND WIRING DIAGRAM .................................................................. 2

PCB INFORMATION....................................................................................... 3

CIRCUIT DESCRIPTION ................................................................................ 4

PRINTED CIRCUIT BOARDS......................................................................... 6

DISASSEMBLY............................................................................................... 9

DIAGNOSTIC PROGRAM ............................................................................ 25

EXPLODED VIEW......................................................................................... 28

PARTS LIST.................................................................................................. 30

SCHEMATIC DIAGRAMS............................................................................. 33

CDP-120

– 1 –

SPECIFICATIONS

Keyboard 88-key piano keyboard

Touch Response 3 types, Off

Maximum Polyphony 48 notes (24 for certain tones)

Tones

Built-in Tones 5; with layer

Reverb 1 to 10, Off

Chorus 1 to 5, Off

Demo Songs 5 songs (tone demo songs)

Other Functions

Transpose ±1 octaves (-12 to +12 semitones)

Tuning A4 = 415.5 to 465.9 Hz (Initial Default: 440.0 Hz)

MIDI 16 multi-timbre received, GM Level 1 standard

Inputs/Outputs

USB port TYPE B

Damper Pedal jack Standard jack

Phones/Output jack Stereo standard jack

Output Impedance: 3 Ω, Output Voltage: 1.5 V (RMS) MAX

Power Jack 12 V DC

Power Supply

AC Adaptor AD-A12150LW

Auto Power Off 30 minutes after last key operation, Auto Power Off can be disabled.

Speakers (12 cm × 6 cm oval) × 2

Output 8 W + 8 W

Power Consumption 12 V 18 W

Dimensions 132.2 × 28.6 × 12.9 cm (52 1/16 × 11 1/4× 5 1/16 inch)

Weight Approximately 11.4 kg (25.1 lbs)

CDP-120

– 2 –

BLOCK AND WIRING DIAGRAM

KEYBOARD PCB

(M914-KYA1)

MAIN PCB

(M914-MDA1)

POWER AMP PCB (M914-PSA1)

KEYBOARD PCB

(M914-KYB1)

KEYBOARD PCB

(M914-KYC1)

POWER SWITCH

(SW1)

DC 12 V (J3)

CN802 (16 pin) CN804 (16 pin) CN805 (16 pin)

CN803 (30 pin)

CN14 (30 pin)

CN11 (11 pin)

CN3 (11 pin)

CN2 (2 pin)

CN1 (2 pin)

CN20 (5 pin)

CN4 (5 pin)

USB

PHONES (J2)

PEDAL (J5)

SPEAKER (L)

SPEAKER (R)

MAIN VOL. (VR1)

CN19 (4 pin)

CN801 (16 pin)

FI0~FI10,

SI0~SI10,

KC0~KC7

LOUT, ROUT

KI0~KI2, KC0, KC1

PEDAL,

APO, POFF,

MUTE, MIC IN

MPU

IC7

Headphones

Amplifier

IC1

Power

Amplifier

IC2

MA1~MA22

MD0~MD15

Flash Memory

(64 Mbit)

IC2

Filter

IC5

Power Supply Circuit

IC6, C24, C25,

C27, C33, C35

VD3

VCP

Power

Supply Circuit

IC3, Q4, D1

Power Supply Circuit

IC3, Q4, D1,

C40~C45

VA5 VD5

VD5VA5

LOUT

ROUT

BUTTONS

CDP-120

– 3 –

PCB INFORMATION

M914-MDA1M914-PSA1

M914-KYA1 M914-KYB1 M914-KYC1

Classiﬁ cation Parts Name PCB Name Components

Main PCB PCB UNIT/MAIN M914-MDA1 MPU, Flash Memory (64 Mbit),

Power Supply Circuit, Filter, USB Port

Power Amp PCB PCB UNIT/PSA1 M914-PSA1

Power Supply Circuit, Power Ampli er

Headphones Ampli er, Power Switch,

Main Volume, DC 12 V Terminal,

DAMPER PEDAL Jack,

PHONES/OUTPUT Jack, Buttons

Keyboard PCB PCB UNIT/KY and

RUBBER CONTACT

M914-KYA1

KeyboardM914-KYB1

M914-KYC1

CDP-120

– 4 –

CIRCUIT DESCRIPTION

 KEY 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

Each key has two contacts, the rst contact 1and second contact 2.

NOTE: The diagram below illustrates how the contacts work.

Key

Second contact First contact 

CDP-120

– 5 –

 NOMENCLATURE OF KEYS

F#3G#3 A#3 C#4D#4 F#4G#4A#4 C#5D#5 F#5G#5 A#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#7C#7

 BUTTON MATRIX

SWO0 SWO1

SWI3 STRINGS GRAND PIANO 2

SWI4 GRAND PIANO 1 HARPSICHORD

SWI5 DEMO, FUNCTION

ELEC PIANO

CDP-120

– 6 –

PRINTED CIRCUIT BOARDS

Main PCB: M914-MDA1 Power Amp PCB: M914-PSA1

CDP-120

– 7 –

Keyboard PCB: M914-KYA1

Keyboard PCB: M914-KYB1

CDP-120

– 8 –

Keyboard PCB: M914-KYC1

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