CVP-55

PRINTING THE ELECTRONIC DOCUMENT

The PDF of this service manual is not designed to be printed from cover to cover. The pages vary in size, and must therefore be printed in sections based on page dimensions.

NON-SCHEMATIC PAGES Data that does NOT INCLUDE schematic diagrams are formatted to 8.5 x 11 inches and can be printed on standard letter-size and/or A4-sized paper.

SCHEMATIC DIAGRAMS The schematic diagram pages are provided in two ways, full size and tiled. The full-sized schematic diagrams are formatted on paper sizes between 8.5” x 11” and 18” x 30” depending upon each individual diagram size. Those diagrams that are LARGER than 11” x 17” in full-size mode have been tiled for your convience and can be printed on standard 11” x 17” (tabloid-size) paper, and reassembled.

TO PRINT FULL SIZE SCHEMATIC DIAGRAMS

If you have access to a large paper plotter or printer capable of outputting the full-sized diagrams, output as follows: 1) Note the page size(s) of the schematics you want to output as indicated in the middle window at the bottom of the viewing screen. 2) Go to the File menu and select Print Set-up. Choose the printer name and driver for your large format printer. Con firm that the printer settings are set to output the indicated page size or larger. 3) Close the Print Set Up screen and return to the File menu. Select “Print...” Input the page number of the schematic(s) you want to print in the print range window. Choose OK.

TO PRINT TILED VERSION OF SCHEMATICS

Schematic pages that are larger than 11” x 17” full-size are provided in a 11” x 17” printable tiled format near the end of the document. These can be printed to tabloid-sized paper and assembled to full-size for easy viewing. If you have access to a printer capable of outputting the tabloid size (11” x 17”) paper, then output the tiled version of the diagram as follows: 1) Note the page number(s) of the schematics you want to output as indicated in the middle window at the bottom of the viewing screen. 2) Go to the File menu and select Print Set-up. Choose the printer name and driver for your printer. Con firm that the plotter settings are set to output 11” x 17”, or tabloid size paper in landscape ( ) mode. 3) Close the Print Set Up screen and return to the File menu. Select “Print...” Input the page number of the schematic(s) you want to print in the print range window. Choose OK. TO PRINT SPECIFIC SECTIONS OF A SCHEMATIC

To print just a particular section of a PDF, rather than a full page, access the Graphics Select tool in the Acrobat Reader tool bar. 1) To view the Graphics Select Tool, press and HOLD the mouse button over the Text Select Tool which looks like: T This tool will expand to reveal to additional tools. Choose the Graphics Select tool by placing the cursor over the button on of the far right that looks like: 2) After selecting the Graphics Select Tool, place your cursor in the document window and the cursor will change to a plus (+) symbol. Click and drag the cursor over the area you want to print. When you release the mouse button, a marquee (or dotted lined box) will be displayed outlining the area you selected. 3) With the marquee in place, go to the file menu and select the “Print...” option. When the print window appears, choose the option under the section called “Print Range” which says “Selected Graphic”. Select OK and the output will print only the area that you outlined with the marquee.

YAMAHA Corporati on Electronic Products Service Division

Electone ORGAN

Combo Products

Disklavier & Silent Piano

Clavinova & Portable Keyboard

Model PCB

Symptom

Condition

2

Repair

CircuitNo.1 RepairParts1 Quanti

21. Open pattern

27. Repair PCB trace(s)/pad(s)

CVP55 DM 0301. Electric noise

01. Constantly

21. Open pattern

27. Repair PCB trace(s)/pad(s) I C3

XJ966E00


01. Constantly

21. Open pattern


XJ966E00

1

CVP55 DM 1600. No problem found

99. Other condition 32. No problem found

12. Functional check

XJ966E00

1

CVP55 DM 0412. Faulty sound output

01. Constantly

21. Open pattern


CVP55 DM 0302. Distorted sound

01. Constantly

21. Open pattern


IC3

1


01. Constantly

21. Open pattern


XJ966E00

1

CVP55 D M 0401. No sound

01. Constantly

21. Open pattern

27. Repair PCB trace(s)/pad(s) IC3

XJ966E00

1


01. Constantly

21. Open pattern


CVP55 DM 0409. Excessive sound level

01. Constantly

28. Faulty IC(s)

01. Replacement

IC1

XH543A00

1


01. Constantly

28. Faulty IC(s)

01. Replacement

IC3

XJ966E00

1

CVP55 DM 0001. Pow er up, but not oper at ing (or Sy st em does not boot up) 01. Cons tant ly

21. Open pat ter n

27. Repair PCB t rac e( s)/ pad(s ) I C2

XJ730E00

1


01. Constantly

21. Open pattern


XJ966E00

1


01. Constantly

21. Open pattern


XJ966E00

1

11 . L ea king

0 5. Cle aning

C VP 55 D M 00 01 . Po we r up , b ut no t o per at ing ( or Sy st em d oes no t b oo t up) 02 . I nt er mit te nt ly

Стр. 1

Defect

CVP55 DM 0001. Power up, but not operating (or System does not boot up) 01. Constantly


01. Constantly

08. Cracked, peeled, corroded 27. Repair PCB trace(s)/pad(s)


01. Constantly

21. Open pattern


XJ966E00

1


01. Constantly

21. Open pattern


XJ966E00

1


01. Constantly

21. Open pattern


XJ966E00

1


01. Constantly

21. Open pattern


XJ966E00

1


28. Faulty IC(s)

01. Replacement

IC2

XJ730E00

1


01. Constantly



01. Constantly

32. No problem found



01. Constantly

21. Open pattern


XJ966E00

1


01. Constantly

21. Open pattern


XJ966E00

1


01. Constantly



IC3

XJ966E00

1


01. Constantly

21. Open pattern

27. Repair PCB trace(s)/pad(s) XJ966E00

1

CVP55 DM 0411. Specific faulty timbre

01. Constantly

21. Open pattern



01. Constantly

21. Open pattern



01. Constantly

21. Open pattern


Xj966E00

1


01. Constantly

21. Open pattern


XJ966E00

1


01. Constantly

21. Open pattern



01. Constantly

21. Open pattern


XJ966E00

1


01. Constantly

21. Open pattern


XH543A00

1

IC28

XI939A00

1

IC1

XH543A00

1

IC44

XE789A00

1

IC37

IG051100

1

CVP55 DM 0404. No sound (some keys)

01. Constantly

28. Faulty IC(s)

01. Replacement


01. Constantly

21. Open pattern



01. Constantly

21. Open pattern



01. Constantly

21. Open pattern



01. Constantly

21. Open pattern



01. Constantly

21. Open pattern



01. Constantly

21. Open pattern



01. Constantly

21. Open pattern



01. Constantly

21. Open pattern



01. Constantly

21. Open pattern



01. Constantly

21. Open pattern



01. Constantly

21. Open pattern



01. Constantly

21. Open pattern


CVP55 DM 0901. Does not read disks

01. Constantly

28. Faulty IC(s)

01. Replacement


20. Unknown




01. Constantly

21. Open pattern



01. Constantly

28. Faulty IC(s)

01. Replacement


01. Constantly

21. Open pattern



21. Open pattern


CVP55 DM 0001. Power up, but not operating (or System does not boot up) 02. Intermittently

20. Bad contact, connection

04. Resoldering/solder touch-up


01. Constantly

21. Open pattern



01. Constantly

21. Open pattern



01. Constantly

21. Open pattern



01. Constantly

21. Open pattern



21. Open pattern



21. Open pattern


01. Constantly


01. Constantly

21. Open pattern



01. Constantly

21. Open pattern


CVP55 DM 0401. No sound

01. Constantly

28. Faulty IC(s)

CVP55 DM 9900. Other problem

99. Other condition 99. Other defect

01. Replacement 99. Other repair


21. Open pattern



21. Open pattern


01. Constantly


01. Constantly

21. Open pattern



20. Unknown




28. Faulty IC(s)

01. Replacement


01. Constantly

21. Open pattern



01. Constantly

21. Open pattern



01. Constantly

21. Open pattern


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CVP55 DM 0901. Does not read disks

02. Intermittently

99. Other defect



20. Unknown




20. Unknown




01. Constantly

28. Faulty IC(s)

01. Replacement


01. Constantly

21. Open pattern



01. Constantly

21. Open pattern



01. Constantly

21. Open pattern



02. Intermittently

21. Open pattern



21. Open pattern



01. Constantly

21. Open pattern




01. Constantly

21. Open pattern


21. Open pattern



01. Constantly

21. Open pattern



01. Constantly

28. Faulty IC(s)


01. Constantly

28. Faulty IC(s)

01. Replacement


01. Constantly

21. Open pattern



01. Constantly

21. Open pattern


28. Faulty IC(s)

01. Replacement

IC1

XH543A00

1

IC44

1

IC13

1

CVP55 DM CVP55 DM 0001. Power up, but not operating (or System does not boot up) 01. Constantly

IC2

XJ730E00

1

IC41

XE449A00

1

CVP55 DM CVP55 DM CVP55 DM CVP55 DM CVP55 DM CVP55 DM CVP55 DM CVP55 DM CVP55 DM CVP55 DM CVP55 DM CVP55 DM CVP55 DM CVP55 DM CVP55 DM CVP55 DM CVP55 DM 1600. No problem found

20. Unknown




01. Constantly

28. Faulty IC(s)

01. Replacement

IC18

XJ204A00

1


28. Faulty IC(s)

01. Replacement

IC2

XJ730E00

1


21. Open pattern


CVP55 DM 0408. Low sound level

01. Constantly

22. Cracked PCB



01. Constantly

21. Open pattern



01. Constantly

28. Faulty IC(s)

01. Replacement

IC1

XH543A00

1

CVP55 DM 0001. Pow er up, but not oper at ing (or Sy st em does not boot up) 01. Cons tant ly

21. Open pat ter n

27. Repair PCB t rac e( s)/ pad(s ) I C3

XJ966E00

1


XJ966E00

1 1

01. Constantly

21. Open pattern



21. Open pattern



21. Open pattern


XJ966E00


01. Constantly

28. Faulty IC(s)

01. Replacement

IC27

XI940A00

1


01. Constantly

28. Faulty IC(s)

01. Replacement

IC12

XH235C00

1


01. Constantly

21. Open pattern



01. Constantly

28. Faulty IC(s)

01. Replacement

IC1

XH543A00

1


01. Constantly

21. Open pattern


IC1

XH543A00

1

CVP55 DM CVP55 DM CVP55 DM CVP55 D M 0401. No sound

01. Constantly

21. Open pattern



21. Open pattern



21. Open pattern


CVP55 D M 0302. Distorted sound

01. Constantly

99. Other defect

99. Other repair


01. Constantly

28. Faulty IC(s)

01. Replacement


01. Constantly

21. Open pattern



01. Constantly

21. Open pattern



01. Constantly

21. Open pattern



01. Constantly

21. Open pattern



01. Constantly

21. Open pattern


XJ966E00

1


01. Constantly

21. Open pattern


XJ966E00

1


01. Constantly

21. Open pattern


XJ966E00

1


01. Constantly

21. Open pattern


XJ966E00

1


01. Constantly

21. Open pattern


XJ966E00

1


01. Constantly

21. Open pattern



01. Constantly

21. Open pattern


XJ966E00

1

CVP55 D M 1600. No problem found

20. Unknown



IC3

XJ966E00

1


01. Constantly

21. Open pattern


XJ966E00

1


01. Constantly

21. Open pattern


XJ966E00

1


01. Constantly



IC2

XJ730E00

1


08. Cracked, peeled, corroded 27. Repair PCB trace(s)/pad(s) IC2

XJ730E00

1


01. Constantly



XJ966E00

1


20. Unknown




20. Unknown



IC3

End of Data

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Portable Keyboard Issued by

YAMAHA Electronic Products Service Division

BULLETIN NUMBER:

DATE: December, 1994 RELATED BULLETIN NO.

REPLACEMENT FLOPPY DISK DRIVE UNIT OBJECTIVE: Provide reliable operating unit and standardize connectors. The replacement drive set includes (1) FFD unit, (4) binding screws, and (1) +5V power extension cable.

PART NUMBERS: Current FDD Unit

Changed New FDD Unit Set Part No. VJ031600 Part No. NX006890

Note: If the VJ031600 FDD unit is ordered, you will automatically receive the upgraded NX006890 FDD unit.

APPLICATION TO PRODUCTION: CVP50, 55, 65, 70 CVP85A (#6450 ~), CVP87A (#6192 ~) CLP705 (#2816 ~), MLP51D (#1191 ~) DOM30, DRC20 Note: If replacing the FDD unit for the CVP75, the part number is VJ031601.

INSTALLATION: To install the FDD unit refer to "HOW TO INSTALL THE NEW FDD UNIT" for further details.

HOW TO INSTALL THE NEW FDD UNIT This information is for both the VJ031600 or VI577100 FDD unit replacement. The NX006890 upgrade set contains:

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FDD unit

VR648700 Mitsubishi MF355-152MZY

Screws

ED030056 Four installation screws (3 x 5)

Extension cable MX000390 +5V power extension cable Instruments included in the FDD upgrade:

CVP-5O, -55, -65, -70, -85, -85A, -87, -87A CLP-705, DRC-20, DOM-30, MLP-51D, PDP-500 Installation procedure:

1. 2. 3. 4.

Exchange the FDD units. Connect the +5V bound power extension cable. (Refer to illustration #1) Connect the 34P flat cable connector upside down. (Refer to illustration #1) Tighten the four (3 x 5) screws appropriately. (Refer to illustration #2)

Caution:

Do not use the existing (3 x 8) screws. It is possible damage to the floppy disk drive will occur by using the orginal screws. Only use the screws included (3 x 5) with the FDD update kit. The following keyboard intruments are included in the FDD upgrade:

PSR-5700, PSR-6700, DMC-1000 Installation procedure for the additional keyboards:

1. Exchange the FDD units. 2. Connect the 34P flat cable connector upside down, (Refer to illustration #1) *NOTE: The screws and extension power cable are not used.

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BULLETIN NUMBER:

DATE: July, 1994 RELATED BULLETIN NO.

REPLACEMENT OF RUBBER CONTACT FOR AE88 KEYBOARD REASON: The material used for the contact rubber (AE88 keyboard) has been changed for improved durability. The color and the part number in the parts list should be updated accordingly.

PARTS: Old contact rubber

New contact rubber

Part No. VC799200

Part No. VS549800

Color

Color

White

Pink

The new part number will be shipped automatically if VC799200 is ordered.

APPLICATION TO AFFECTED PRODUCTS: Clavinova CLP (300,350,360, 500, 550, 560, 570, 650, 760) Clavinova CVP (6, 8, 10, 35, 45, 50, 55, 65, 70, 75, 100) Units With Serial Numbers Earlier Than The Following: CLP 360 #039828 CLP 560 #092743 CVP 35 #012929 CVP 55 #021777 CVP 65 #019485 CVP 75 #005111 Electone PF2000, PF1200, PF1500 Units earlier than PF85 #013231 ML Units earlier than MLP51 #1389

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BULLETIN NUMBER:

DATE: RELATED BULLETIN NO.

PROGRAM ROM UPDATE OBJECTIVE: The MAIN CPU (H8/532) IC2 and the MAIN ROM (1M)IC3 have been upgraded as follows.

UPGRADE DETAILS: Upgrade details of MAIN CPU(H8/532)IC2 and MAIN ROM (1M ROM)IC3

Damper effect is not applied to the additional sound if solo style play and left pedal function are used during performance recording. Style voice cannot be changed during style change if solo style play and left pedal function are used during performance recording. If ending is recorded to cord sequence and played back, rhythm sound will generate after ending is completed. Rhythm does not run with start/stop switch if recording switch is turned on and off, immediately after disk formatting. If a song recorded with dual voice mode is punched in, dual voice does not occur during input. If a song recorded with split mode is punched in, split mode does not occur during input. If performance memory is recorded with ABC volume being changed and ABC volume is changed when the recording is redone, it will co-exist with the last volume data. When recording track 1 and 2 to the data to which DOC disk has been copied, orchestra sound will be generated. If the ending switch is pressed at the third beat while 3/4 time rhythm is played and then switch to 4/4 time rhythm is made, the system stops due to a slight difference in timing of the change. If FILL-IN is continued for 2 measures with chord sequencer POPS-1 normal, the chord on the second measure will not be generated. If the SPLIT switch is pressed during performance recording, split works during recording, however, it does not work during play back. If a song, to which the panel registration is recorded, is copied to another song, it is impossible to get out of copy mode. If recording to SONG 1 with POP-1 (tempo=86) and to SONG 2 with DROP 1 (tempo-120) during SONG 2 play back, it will start with tempo 86. If both levels of the manual volume and EXP pedal are lowered during the start of recording, EXP pedal data is played back at MAX during playback. When solo style play is on and you start recording with the left pedal function set to solo style play, and you stop recording with the left pedal on and with keys pressed, it will not stop during playback.

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END has been modified so that it does not appear any more when format is completed. When starting performance memory recording, if an early glissando is used, the glissando will not be properly reproduced during playback. It will play back simultaneously. With cord sequence recording, recording is done with a preset tempo which is set for each rhythm. Although the FILL to VARIATION switch is pressed twice to move to VARIATION during chord sequence recording, Fill-in is activated during playback. If more than 400 measures are input and set to FULL during chord sequence recording, a system reset is activated in some cases. When recording with performance memory using both SINGLE FINGER and SPLIT function simultaneously, sounds in LK part cannot be recorded. (Reason: When SINGLE FINGER and SPLIT are operated simultaneously, the sound in the LK part is supposed to generate chords. If you try to record it, the sound of the key you press is recorded. Different results are obtained during playback and recording.) After recording with performance memory using solo style play and the left pedal function, and if the left pedal is turned OFF, during left pedal and a key pressed, and you start playing with the same key you pressed before and tenuto, the sound of the key is not generate. Piano ABC function cannot be used when performance memory is played back.

SERVICE RESPONSE: If the items listed above have detected by the user, please replace the MAIN CFU (H8/532) IC2 and the MAIN ROM (1 M) IC3. For CVP55 S/# to 2478, applicable for modifications, the MAIN CPU (H8/532) IC2 on the DM board is a PLCC type and uses an IC socket. The MAIN ROM (1 M) IC3 also uses a socket.

PLCC and QFP type CPUs

This is a CPU with a built-in ROM. The package can differ but the software in the internal ROM is the same. When replacing the CPU for repair or to upgrade the software, please select either. If the MAIN CPU is installed in a socket, the PLCC type can be used. If the IC socket in which a PLCC type uses is removed, a QFP-type CPU can be substituted (solder it directly to the board).

Version indication

When the test program is turned on (turn on the power while pressing A1- and C7 keys), the version number of the MAIN CPU (H8/532) IC2 is displayed on the tempo display and the version number of the main MAIN ROM IN3 is displayed on the song display. Please refer to the service manual for the test program. MAIN CPU (1.10 or V2.00) version as of July 1991 V1.10 and V2.00 of the MAIN CPU are different in typ; PLCC and QFP, however, the contents are the same. MAIN ROM (V1.11 orV2.00) V1.11 and V2.00 of the MAIN ROM are different (ROM, EP and MASK ROM) but, the contents are the same.

PARTS:

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Part name

Part number

MAIN CPU (H8/532)

PLCC (IC2)

XJ389100

MAIN CPU (H8/532)

QFP (IC2)

XJ730A00

Mask ROM (IC3)

XJ966A00

MAIN ROM (1M)

MAIN CPU and MAIN ROM are the same for CVP55 and CVP65.

SERIAL NUMBER TO BE MODIFIED: CVP55 S/# 2479 onwards

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BULLETIN NUMBER:

DATE: JULY, 1991 RELATED BULLETIN NO.

DM PCB MODIFICATION INFORMATION OBJECTIVE: A modification has been made to the DM PCB, used in the CVP55 and CVP65, to reduce unwanted radiation. This modification has been applied to the DM PCB from July onwards.

MODIFICATION: The new DM PCB and the current DM PCB are interchangeable, only several parts and connectors have been moved. See the DM PCB schematics in the following pages for further information.

SERVICE RESPONSE: There are no changes in the shape of the connectors, so both new and current DM PCBs are interchangeable for servicing. Use the current Service Manual when you need the circuit diagram.

PART: Part Name

Current Part No. New Part No.

CVP55 DM PCB

VK555500

VL978500

CVP65 DM PCB

VK556300

VL978600

All PCBs in stock are going to be replaced with new PCBs. Be sure to use new part number when ordering.

APPLICATION TO PRODUCTION: CVP55 S/# 5562 onwards CVP65 S/# 4387 onwards New DM PCB Schematic CVP55(VL978500), CVP65(VL978600)

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BULLETIN NUMBER:

DATE: RELATED BULLETIN NO.

COUNTERMEASURES FOR FDD READ AND WRITE FAILURES SYMPTOM: When a performance memory floppy disk of the disk orchestra collection is played back, sometimes, a note does not stop sounding or missing, or the tempo fluctuates. These symptoms rarely occur.

DETAILS OF THE CHANGE: The errors occur when writing to or reading from the disk (especially at low temperatures). It is caused by signal timing failures of the FDC IC and the main CPU due to DMA IC dispersion. Therefore, the BREQ signal (bus request signal from DMA to the main CPU) will be connected directly bypassing the IC36 (OR circuit).

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CVP-55

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