Casio_CDP-120_Service_Manual电路图.pdf

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1、CDP-120 Ver. 1 : Dec. 2012 CDP-120 JUL. 2011 ELECTRONIC KEYBOARD RadioFans.CN 收音机爱 好者资料库 INDEX 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

2、 . 30 SCHEMATIC DIAGRAMS . 33 RadioFans.CN 收音机爱 好者资料库 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) O

3、ther 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 , Output V

4、oltage: 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) Weig

5、ht Approximately 11.4 kg (25.1 lbs) RadioFans.CN 收音机爱 好者资料库 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 (3

6、0 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) FI0FI10, SI0SI10, KC0KC7 LOUT, ROUT KI0KI2, KC0, KC1 PEDAL, APO, POFF, MUTE, MIC IN MPU IC7 Headphones Ampli

7、fier IC1 Power Amplifier IC2 MA1MA22 MD0MD15 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, C40C45 VA5 VD5 VD5VA5 LOUT ROUT D2 BUTTONS CDP-120 3 PCB INFORMATION M914-MDA1M914-PSA1 M914

8、-KYA1M914-KYB1M914-KYC1 Classifi cationParts NamePCB NameComponents Main PCBPCB UNIT/MAINM914-MDA1 MPU, Flash Memory (64 Mbit), Power Supply Circuit, Filter, USB Port Power Amp PCBPCB UNIT/PSA1M914-PSA1 Power Supply Circuit, Power Amplifi er Headphones Amplifi er, Power Switch, Main Volume, DC 12 V

9、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 KC0KC1KC2KC3KC4KC5KC6KC7 FI0A01A0#1B01C11C1#1D11D1#1E11 SI0A02A0#2B02C12C1#2D12D1#2E12 FI1F11F1#1G11G1#1A11A1#1B11C21 SI

10、1F12F1#2G12G1#2A12A1#2B12C22 FI2C2#1D21D2#1E21F21F2#1G21G2#1 SI2C2#2D22D2#2E22F22F2#2G22G2#2 FI3A21A2#1B21C31C3#1D31D3#1E31 SI3A22A2#2B22C32C3#2D32D3#2E32 FI4F31F3#1G31G3#1A31A3#1B31C41 SI4F32F3#2G32G3#2A32A3#2B32C42 FI5C4#1D41D4#1E41F41F4#1G41G4#1 SI5C4#2D42D4#2E42F42F4#2G42G4#2 FI6A41A4#1B41C51C5#

11、1D51D5#1E51 SI6A42A4#2B42C52C5#2D52D5#2E52 FI7F51F5#1G51G5#1A51A5#1B51C61 SI7F52F5#2G52G5#2A52A5#2B52C62 FI8C6#1D61D6#1E61F61F6#1G61G6#1 SI8C6#2D62D6#2E62F62F6#2G62G6#2 FI9A61A6#1B61C71C7#1D71D7#1E71 SI9A62A6#2B62C72C7#2D72D7#2E72 FI10F71F7#1G71G7#1A71A7#1B71C81 SI10F72F7#2G72G7#2A72A7#2B72C82 Each

12、key has two contacts, the first contact 1 and second contact 2. NOTE: The diagram below illustrates how the contacts work. Key Second contact First contact FI KC SI CDP-120 5 NOMENCLATURE OF KEYS F#3G#3A#3C#4D#4F#4G#4A#4C#5D#5F#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

13、D2 E2 F2 G2 A2 B2 C3 D3 E3B6A6G6F6E6D6C7 C#3A#2G#2F#2D#2C#2 C1 D1 E1 F1 G1 A1 B1A0 B0 A#1A#0G#1F#1D#1C#1A#6G#6F#6D#6C#6 B7A7G7F7E7D7C8 A#7G#7F#7D#7C#7 BUTTON MATRIX SWO0SWO1 SWI3STRINGSGRAND PIANO 2 SWI4GRAND PIANO 1HARPSICHORD SWI5DEMO, FUNCTIONELEC PIANO CDP-120 6 PRINTED CIRCUIT BOARDS Main PCB:

14、M914-MDA1Power Amp PCB: M914-PSA1 CDP-120 7 Keyboard PCB: M914-KYA1 Keyboard PCB: M914-KYB1 CDP-120 8 Keyboard PCB: M914-KYC1 CDP-120 9 DISASSEMBLY CAUTION z The photos show a prototype. The appearance of the instrument, such as color, may differ from the actual model. z To avoid damages to the inst

15、rument and the floor, lay the instrument on a mattress or blanket before starting disassembling. z 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. z If a screw cap is attached to a

16、screw, be sure to reattach the screw cap when reassembling. BEFORE STARTING REPAIR OR SERVICING z Remove the AC adaptor, AC cord or batteries. z Remove accessories such as the music stand. CDP-120 10 DISASSEMBLY A. REMOVE THE PANEL UNITS Main panel unitRight panel unitLeft panel unit A-1. Undo 10 or

17、 six screws on the bottom surface of the main unit. NOTE: To remove only the main panel unit, undo six screws indicated with red circles in the illustration below. A-2. Undo eight or four screws and then remove eight or four LOWER-COVERs. NOTE: To remove only the main panel unit, undo four screws an

18、d remove the four LOWER- COVERs indicated with red circles in the illustration 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 main unit. NOTE: Do not touch

19、 the hammer with the screwdriver while loosening the screws. LOWER-COVER CDP-120 11 A-4. Place the main unit with the keys facing up. A-5. Lift the main panel unit and turn it over. NOTE: The main panel unit is connected to the lower case unit with the connectors and FFC. Use caution when turn over

20、the main panel unit. A-6. Release the connector lock and remove the FFC. A-7. Remove two connectors and then remove the main panel unit. Main panel unit Connector (Right speaker) FFC (M914-KYB1) Connector (Left speaker) CDP-120 12 A-8. Undo three screws on the RIGHT-SIDE-CASE and then remove the RIG

21、HT-SIDE-CASE. RIGHT-SIDE-CASE A-9. Undo three screws on the LEFT-SIDE-CASE and then remove the LEFT-SIDE-CASE. LEFT-SIDE-CASE CDP-120 13 A-10. Undo two screws on the RIGHT-SIDE-INNER-CASE and then remove the right panel unit. RIGHT-SIDE-INNER-CASE Right panel unit A-11. Undo two screws on the LEFT-S

22、IDE-INNER-CASE and then remove the left panel unit. LEFT-SIDE-INNER-CASE Left panel unit CDP-120 14 B. REMOVE THE M914-MDA1 PCB (MAIN PCB) B-1. Remove two connectors. B-2. Undo four screws and then remove the M914-MDA1 PCB. M914-MDA1 PCBConnectors (M914-PSA1) C. REMOVE THE M914-PSA1 PCB (POWER AMP P

23、CB) C-1. Remove the ROTARY-KNOB ROTARY-KNOB C-2. Remove two connectors from the M914-MDA1 PCB. M914-MDA1 PCBM914-PSA1 PCBConnectors (M914-PSA1) C-3. Undo 11 screws and then remove the M914-PSA1 PCB and rubber key. M914-PSA1 PCB M914-PSA1 PCB CDP-120 15 D. REMOVE THE SPEAKER D-1. Unsolder two lead wi

24、res. D-2. Undo four screws and then remove the SPEAKER. Lead wire (Black) Lead wire (Red) Lead wire (Red) Lead wire (Black) E. REMOVE THE KY-ASSY E-1. Undo three screws and then remove the LEFT-SIDE-INNER-CASE. LEFT-SIDE-INNER-CASE E-2. Undo three screws and then remove the RIGHT-SIDE-INNER-CASE. RI

25、GHT-SIDE-INNER-CASE E-3. Undo 26 screws. CDP-120 16 E-4. Undo three screws and then remove the KY-ASSY. KY-ASSY LOWER-CASE-UNIT CDP-120 17 DISASSEMBLY OF THE KY-ASSY A. REMOVE THE KEYS To remove the keys, you will need two of the tools described below. Before removing a black key, you must first rem

26、ove both white keys on either side of the black key. White keys may be removed with the same procedures as removing black keys. 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. The thickness of the tool

27、 must be within 1.21.3 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. Width: 1520 mm R=2.75 mm Use this part to remove the key. 7 mm Thickness: within 1.21.3 mm CDP-120 18 A-1. Insert the two tools between the rib of the c

28、hassis 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. Tools Chassis Tool KeyRib of the chassis CDP-120 19 Refer to the illustration below for the location of each white key. Be sure to install each key at its designated location.

29、All black keys are the same. A black key may be installed at any correct black-key location. A code is indicated at the foot of each key. CEGBDFACEGBDFACEGBDFACEGBSA DBFACEGBDFACEGBDFACEGBDFASC Install a black key before installing the white keys on either of its sides. Follow the same procedures be

30、low to install a black or white key. (1) Assemble a key to a hammer. (2) Press the protrusion of the chassis firmly into the keyhole. (3) Press the key to see if it moves properly. Set securely into the chassis. Assemble a key to a hammer. CDP-120 20 B. REMOVE THE HAMMERS B-1. Place the chassis upsi

31、de down so that the hammers are visible. B-2. Press the chassis with the tip of tweezers. B-3. While catching a hammer with tweezers, set the tweezers against the resin part of the chassis. B-4. Using the chassis-tweezer contact as a fulcrum point, press down against the resin part in the direction

32、of the red arrow in the illustration below, and then disengage the hammer. NOTE: You must press the resin part of the hammer. NOTE: Pressing on the metal part of the hammer may damage the area connected to the resin. Tweezers Press down the resin part. Fulcrum point CDP-120 21 There are several kind

33、s of hammers. The type of a hammer may be identified by the code engraved on it. Hammer Code (for a black key) Type of Hammer (for a black key) Type of Hammer (for a white key) Hammer Code (for a white key) Type of Hammer: “W” for a white key, “B” for a black key. Hammer Code: The hammers for white

34、keys are coded W1, W2, W3, and W4. The hammers for black keys are coded B1, B2, B3, and W4. A hammer must be installed at the correct location according to its type. The combination of hammers and keys are shown below. W1 (13 keys) B1 (9 keys)B2 (9 keys)B3 (9 keys)B4 (9 keys) W2 (13 keys)W3 (13 keys

35、)W4 (13 keys) CDP-120 22 Be sure to install each hammer at its designated location. If a hammer does not move smoothly, check if it is installed at the correct location. Follow the same procedures shown below to install a hammer for both black and white keys. (1) Use the tweezers to set a hammer at

36、its correct location. (2) Press the chassis with the tip of tweezers. (3) Using the chassis-tweezers contact as a fulcrum point, press down the metal part of the hammer in the direction of the red arrow in the illustration below, and then install the hammer. NOTE: When installing, do not damage the

37、felt. Be careful not to damage the felt. Press down against the metal part. Tweezers Fulcrum point Locked at this point CDP-120 23 C. REMOVE THE M914-KYA1/KYB1/KYC1 PCBs (KEYBOARD PCB) C-1. Release the connector lock and remove the FFC. C-2. Remove 23 screws and then remove the M914-KYA1/KYB1/KYC1 P

38、CBs. FFC M914-KYA1 PCBM914-KYB1 PCBM914-KYC1 PCB C-3. Remove eight rubber contact strips. NOTE: One rubber contact strip is shorter than the others. Short rubber contact strip Rubber contact strips Short rubber contact strip Rubber contact strips CDP-120 24 (1) Connect the FFC to the M914-KYB1 PCB a

39、nd lock the connector. NOTE: Insert it firmly and lock up. FFC (2) Secure the M914-KYA1/KYB1/KYC1 PCBs with 23 screws. Press the PCBs lightly in the direction of the red arrow in the illustration below while tightening a screw. (3) Install eight rubber contact strips. NOTE: Be sure to install the sh

40、ort rubber contact strip at the correct location. NOTE: Lightly insert the tip of a rubber contact strip into the PCB first, and then, press it in using the end of a paper clip. Do not press the rubber contact strip forcefully to avoid damaging the rubber contact strip. CDP-120 25 DIAGNOSTIC PROGRAM

41、 PREPARATION (1) Connect the AC adaptor. (2) Connect the pedal (SP-3 or SP-20) to the DAMPER PEDAL jack. NOTE: SP-3 is the pedal unit that comes with CDP-120. SP-20 pedal is sold separately. NOTE: “PEDAL CHECK” cannot be performed unless the pedal is connected. (3) Turn the main volume to the maximu

42、m. (4) Have a PC and a USB cable ready. NOTE: “USB CHECK” cannot be performed without a PC and a USB cable. Operating System: Windows XP (SP2 or later) *1 Windows Vista *2 Windows 7 *3 Mac OS X (10.3.9, 10.4.11, 10.5.8 or later, 10.6.6 or later) *1: Windows XP Home Edition/Windows XP Professional (3

43、2 bit) *2: Windows Vista (32 bit) *3: Windows 7 (32 bit, 64 bit) HOW TO START THE DIAGNOSTIC PROGRAM (1) Hold down the “FUNCTION”, “GRAND PIANO 2” and “HARPSICHORD” buttons at the same time, to turn the power ON. NOTE: Be sure to turn OFF the power when the test is finished. (2) Release the “FUNCTIO

44、N”, “GRAND PIANO 2” and “HARPSICHORD” buttons (3) The diagnostic program starts and then CDP-120 enters in the root mode where it waits for test item selection. TEST ITEMS In root mode, you can perform arbitrary test by pressing a desired button that corresponds to the test item. Test ItemsButtonsNo

45、te A. BUTTON CHECKFUNCTION B. ROM VERSION CHECKHARPSICHORD C. ROM CHECKSUM TESTGRAND PIANO 2 D. PEDAL CHECKELEC PIANOPedal (SP-3 or SP-20) E. USB CHECKPC, USB cable CDP-120 26 TEST PROCEDURES A. BUTTON CHECK A-1. Press the “FUNCTION” button to perform the “BUTTON CHECK”. A-2. Press the button in the

46、 order indicated in the illustration. NOTE: You cannot cancel this check procedure mid-way. The confirmation chord sounds. If there is a button failure or the buttons are pressed in a wrong sequence, an error tone sounds. A-3. When the “STRINGS” button is pressed at the end, press the “STRINGS” button again to return to the root mode. B. ROM VERSION CHECK B-1. Press the “HARPSICHORD” button to perform the “ROM VERSION CHECK”. B-2. Press the “A0” key. The confirmation chord sounds. The error tone sounds. “A0” key B-3. Press the “STRINGS” button to