Casio CDP-130 Troubleshooting guide

CDP-130
JAN. 2014

CDP-130
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

CDP-130
– 1 –
SPECIFICATIONS
Keyboard
Touch Response
88-key piano keyboard
3 types, Off
Maximum Polyphony 48 notes (24 for certain tones)
Tones
Built-in Tones 10; with layer
Hall On, Off
Reverb 1 to 10, Off
Chorus 1 to 5, Off
Demo Songs 5 songs
Metronome
Beats
Tempo Range
0, 1, 2, 3, 4, 5, 6, 7, 8, 9
30 to 255
Other Functions
Transpose
Tuning
±1 octaves (−12 to +12 semitones)
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
Damper Pedal jack
Phones/Output jack
TYPE B
Standard jack
Stereo standard jack
Output Impedance: 3 Ω, Output Voltage: 1.5 V (RMS) MAX
Power Jack 12 V DC
Power Supply
AC Adaptor
Auto Power Off
AD-A12150LW
• The AC adaptor can be used safely in areas up to 4,000 meters
above sea level.
30 minutes after last key operation, Auto Power Off can be disabled.
Speakers
Output
(12 cm × 6 cm oval) × 2
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 10.8 kg (23.8 lbs)

CDP-130
– 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
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)
PHONES/OUTPUT
(J2)
DAMPER PEDAL
(J5)
SPEAKER (L)
SPEAKER (R)
MAIN VOL. (VR1)
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
USB (CN19)
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
D2
BUTTONS

CDP-130
– 3 –
PCB INFORMATION
M914-MDA1M914-PSA1
M914-KYA1 M914-KYB1 M914-KYC1
Parts Name PCB Name Functions
Main PCB
PCB UNIT/MAIN M914-MDA1 MPU, Flash memory, Power supply circuit, Filter,
USB port
Power & Amp PCB
PCB UNIT/POWER & AMP M914-PSA1
Power supply circuit, Power amplifier,
Headphones amplifier, Buttons, Power switch,
Main volume, DC 12 V terminal,
DAMPER PEDAL jack, PHONES/OUTPUT jack
Keyboard PCB
PCB UNIT/KEYBOARD
M914-KYA1
KeyboardM914-KYB1
M914-KYC1

CDP-130
– 4 –
CIRCUIT DESCRIPTION
Y 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
Y Key Matrix
Each key has two contacts, the first contact and second contact .
[NOTE] The diagram below illustrates how the contacts work.
Key
Second contact
 First contact 
FI
KC
SI
KC0 KC1 KC2 KC3 KC4 KC5 KC6 KC7
FI0 A0A0#B0C1C1#D1D1#E1
SI0 A0A0#B0C1C1#D1D1#E1
FI1 F1F1#G1G1#A1A1#B1C2
SI1 F1F1#G1G1#A1A1#B1C2
FI2 C2#D2D2#E2F2F2#G2G2#
SI2 C2#D2D2#E2F2F2#G2G2#
FI3 A2A2#B2C3C3#D3D3#E3
SI3 A2A2#B2C3C3#D3D3#E3
FI4 F3F3#G3G3#A3A3#B3C4
SI4 F3F3#G3G3#A3A3#B3C4
FI5 C4#D4D4#E4F4F4#G4G4#
SI5 C4#D4D4#E4F4F4#G4G4#
FI6 A4A4#B4C5C5#D5D5#E5
SI6 A4A4#B4C5C5#D5D5#E5

CDP-130
– 5 –
KC0 KC1 KC2 KC3 KC4 KC5 KC6 KC7
FI7 F5F5#G5G5#A5A5#B5C6
SI7 F5F5#G5G5#A5A5#B5C6
FI8 C6#D6D6#E6F6F6#G6G6#
SI8 C6#D6D6#E6F6F6#G6G6#
FI9 A6A6#B6C7C7#D7D7#E7
SI9 A6A6#B6C7C7#D7D7#E7
FI10 F7F7#G7G7#A7A7#B7C8
SI10 F7F7#G7G7#A7A7#B7C8
Y Button Matrix
SWO0 SWO1
SWI3 HALL GRAND PIANO 1
SWI4 FUNCTION METRONOME
SWI5 DEMO ELEC PIANO 1

CDP-130
– 6 –
PRINTED CIRCUIT BOARDS
Main PCB: M914-MDA1 Power & Amp PCB: M914-PSA1

CDP-130
– 7 –
Keyboard PCB: M914-KYA1
Keyboard PCB: M914-KYB1

CDP-130
– 8 –
Keyboard PCB: M914-KYC1

CDP-130
– 9 –
DISASSEMBLY
Y About Repair
• The figures in this chapter show CDP-120, so the components used may differ from CDP-130.
• To avoid damages to the instrument and floor, lay the instrument on a mattress or blanket
before starting disassembling.
• There are several kinds of screws. Be sure to use the correct type of screws when
reassembling. It is advisable to sort the screws as shown below after removing them.
• If a screw cap is attached to the screw, remove it. Be sure to reattach the screw cap when
assembling.
• Check how cables are wired before removing cables. Be sure to wire the cables in the same
manner as they were before disassembly.
• In case cables are secured with cable ties, securing bands, clips, or tapes, remove them first.
Be sure to secure the cables in place in the same manner as they were before disassembly.
Y Before Starting Repair or Servicing
• Remove the AC adaptor, AC cord or batteries.
• Remove accessories such as the music stand.
Y Flowchart
A. Panel Units
Assembled Product
D. SPEAKER
E. Keyboard Unit
B. PCB UNIT/MAIN
C. PCB UNIT/POWER & AMP
Disassembly of the Keyboard Unit A. KEY
B. HAMMER UNIT
C. PCB UNIT/KEYBOARD

CDP-130
– 10 –
Y Disassembly Procedure
A. Remove the Panel Units
Main Panel Unit Right Panel UnitLeft Panel Unit
A-1. Undo 10 or six screws on the bottom surface.
[NOTE] To remove only the Main Panel Unit, undo six screws indicated with red circles in the
figure below.
A-2. Undo eight or four screws and then remove eight or four LOWER COVER.
[NOTE] To remove only the Main Panel Unit, undo four screws and remove the four LOWER
COVER indicated with red circles in the figure below.
A-3. You will see a screw inside when you remove an LOWER COVER. Undo and remove the screw
through each opening (eight or four screws in total).
[NOTE] Do not drop the screws inside the unit.
[NOTE] Do not touch the hammer with the screwdriver while loosening the screws.
LOWER COVER

CDP-130
– 11 –
A-4. Place the digital piano with keyboard facing up.
A-5. Lift the Main Panel Unit and turn it over.
[NOTE] The Main Panel Unit is connected to the lower case with the cables. Use caution when
turn over the Main Panel Unit.
A-6. Unlock the connector and disconnect the flat cable.
A-7. Disconnect two connectors and then remove the Main Panel Unit.
Connector
(Right speaker)
Flat cable
(KYB1 PCB)
Connector
(Left speaker)
Main Panel Unit

CDP-130
– 12 –
A-8. Undo three screws on the CASE/SIDE/RIGHT and then remove the CASE/SIDE/RIGHT.
CASE/SIDE/RIGHT
A-9. Undo three screws on the CASE/SIDE/LEFT and then remove the CASE/SIDE/LEFT.
CASE/SIDE/LEFT

CDP-130
– 13 –
A-10. Undo two screws on the CASE/SIDE/INNER/RIGHT and then remove the Right Panel Unit.
Right Panel Unit
CASE/SIDE/INNER/RIGHT
A-11. Undo two screws on the CASE/SIDE/INNER/LEFT and then remove the Left Panel Unit.
Left Panel Unit
CASE/SIDE/INNER/LEFT

CDP-130
– 14 –
B. Remove the PCB UNIT/MAIN
B-1. Disconnect two connectors.
B-2. Undo four screws and then remove the PCB UNIT/MAIN.
PCB UNIT/MAIN Connectors (PSA1 PCB)
C. Remove the PCB UNIT/POWER & AMP
C-1. Remove the KNOB/ROTARY.
KNOB/ROTARY
C-2. Disconnect two connectors from the MDA1 PCB.
PCB UNIT/POWER & AMPConnectors (PSA1 PCB)MDA1 PCB
C-3. Undo 11 screws and then remove the PCB UNIT/POWER & AMP and RUBBER BUTTON/A.
RUBBER BUTTON/A

CDP-130
– 15 –
D. Remove the SPEAKER
D-1. Unsolder two lead wires.
D-2. Undo four screws and then remove the SPEAKER.
<Left speaker> <Right speaker>
Lead wire (Black)
Lead wire (Red)
Lead wire (Red)
Lead wire (Black)
E. Remove the Keyboard Unit
E-1. Undo three screws and then remove the CASE/SIDE/INNER/LEFT.
CASE/SIDE/INNER/LEFT
E-2. Undo three screws and then remove the CASE/SIDE/INNER/RIGHT.
CASE/SIDE/INNER/RIGHT
E-3. Undo 26 screws.

CDP-130
– 16 –
E-4. Undo three screws and then remove the Keyboard Unit from the CASE UNIT/LOWER.
Keyboard Unit
CASE UNIT/LOWER

CDP-130
– 17 –
Y Disassembly of the Keyboard Unit
A. Remove the KEY
<Removing the keys>
• To remove the key, you will need two of the tools described below.
• Before removing a black key, you must first remove both white keys on either side of the black
key.
• White keys may be removed with the same procedures as removing black keys.
<Tool>
The tool used in the photos in this section was converted from a gardening ID tag. The size and
shape of an ID tag accord to the dimensions below.
<Note on shaping an ID tag>
The thickness of the tool must be within 1.2~1.3 mm. If the tool is too thin, removing keys become
difficult. If the tool is too thick, it may damage the rib of the chassis.
<Tool dimensions>
Width:
15~20 mm R=2.75 mm
Use this part to
remove the key.
7 mm
Thickness:
within 1.2~1.3 mm

CDP-130
– 18 –
A-1. Insert the two tools between the rib of the chassis and a key.
A-2. When the tools are inserted to a certain depth, the key begins to be lifted and can then be
removed.
<Cross-section image>
Tool
Key
Rib of the chassis
Tools
Chassis