Yamaha-CDC-775-Service-Manual电路原理图.pdf

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1、CDC-775 CDC-775 100669 SERVICE MANUAL COMPACT DISC PLAYER I CONTENTS TO SERVICE PERSONNEL .12 REAR PANELS .3 SPECIFICATIONS .4 INTERNAL VIEW .4 DISASSEMBLY PROCEDURES .56 STANDARD OPERATION CHART .78 TEST MODE .911 ADJUSTMENT.12 ERROR MESSAGES .1315 IC DATA .1620 DISPLAY DATA .21 IC BLOCKS .2223 PIN

2、 CONNECTION DIAGRAM .23 BLOCK DIAGRAM .2425 PRINTED CIRCUIT BOARD .2631 SCHEMATIC DIAGRAM .32 PARTS LIST .3342 GREASE APPLICATION DIAGRAM.43 REMOTE CONTROL TRANSMITTER.44 This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel. It has been assumed that ba

3、sic service procedures inherent to the industry, and more specifically YAMAHA Products, are already known and understood by the users, and have therefore not been restated. WARNING:Failure to follow appropriate service and safety procedures when servicing this product may result in personal injury,

4、destruction of expensive components, and failure of the product to perform as specified. For these reasons, we advise all YAMAHA product owners that any service required should be performed by an authorized YAMAHA Retailer or the appointed service representative. IMPORTANT:The presentation or sale o

5、f this manual to any individual or firm does not constitute authorization, certification or recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form. The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover

6、. The research, engineering, and service departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitable and specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the d

7、istributors Service Division. WARNING:Static discharges can destroy expensive components. Discharge any static electricity your body may have accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss). IMPORTANT:Turn the unit OFF during disassembl

8、y and part replacement. Recheck all work before you apply power to the unit. IMPORTANT NOTICE CDC-775 、認定再生紙使用。 This Service Manual uses recycled paper. SERVICE MANUAL RadioFans.CN 收音机爱 好者资料库 Copyright 2002 YAMAHA CORPORATION This manual is copyrighted by YAMAHA and may not be copied or redistribute

9、d either in print or electronically without permission. CDC-775 CDC-775 1. Critical Components Information. Components having special characteristics are marked and must be replaced with parts having specifications equal to those originally installed. 2. Leakage Current Measurement (For 120V Models

10、Only). When service has been completed, it is imperative to verify that all exposed conductive surfaces are properly insulated from supply circuits. GMeter impedance should be equivalent to 1500 ohm shunted by 0.15F. GLeakage current must not exceed 0.5mA. GBe sure to test for leakage with the AC pl

11、ug in both polarities. EQUIPMENT UNDER TEST WALL OUTLET INSULATING TABLE AC LEAKAGE TESTER OR EQUIVALENT CAUTION: USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE. THE COMPACT DISC PLAYER SHOULD NOT BE ADJUSTED O

12、R REPAIRED BY ANYONE EXCEPT PROPERLY QUALIFIED SERVICE PERSONNEL. PROTECTION OF EYES FROM LASER BEAM DURING SERVICING This set employs a laser. Therefore, be sure to carefully follow the instructions below when servicing . 1. Laser Diode Properties GMaterial: GaAlAs GWavelength: 780 nm GEmission Dur

13、ation : Continuous GLaser Output: max. 44.6 W* * This output is the value measured at a distance of about 200 mm from the objective lens surface on the Optical Pick-up Block. 2. When checking the laser diode emission, keep your eyes more than 30 cm away from the objective lens. WARNING: CHEMICAL CON

14、TENT NOTICE! The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (where applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and possibly other entities) to cause cancer and

15、/or birth defects or other reproductive harm. DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHATSOEVER! Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyes to solder/flux vapor! I

16、f you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling food. I TO SERVICE PERSONNEL 1 RadioFans.CN 收音机爱 好者资料库 CDC-775 CDC-775 2 w R, G models English THIS PRINTING (SEE POSITION SHOWN IN THE ILLUSTRATION) INFORMS THE USER THAT TH

17、E APPARATUS CONTAINS A LASER COMPONENT. THIS LABEL (SEE POSITION SHOWN IN THE ILLUSTRATION) WARNS THAT ANY FURTHER PROCEDURE WILL BRING THE USER INTO EXPOSURE WITH THE LASER BEAM. CAUTION : USE OF CONTROLS, ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN, MAY RESULT IN HAZ

18、ARDOUS RADIATION EXPOSURE. Swedish DENNA MRKNING (SE FIGUR) UPPLYSER OM ATT DET I APPARATEN INGR EN LASERKOMPONENT AV TYP KLASS 1. VARNINGSMRKNING (SE FIGUR) FR STRLNING. INGREPP I APPARATEN BR ENDAST FRETAGAS AV FACKMAN MED KNNEDOM OM LASER. APPARATEN INNEHLLER EN LASERKOMPONENT SOM AVGER STRLNING

19、VERSTIGANDE GRNSEN FR LASERKLASS 1. VARNING: OSYNLIG LASERSTRLNING NR DENNA DEL R PPNAD : BETRAKTA EJ STRLEN. Danish DETTE MRKAT ER ANBRAGT SOM VIST I ILLUSTRATIONEN FOR AT ADVARE BRUGEREN OM AT AP- PARATET INDEHOLDER EN LASERKOMPONENT. DETTE MRKAT OM LASEREN ER ANBRAGT P APPARATET SOM EN OPLYSNING

20、OM AT APPARATET INDEHOLDER ET LASERKOMPONENT. ADVARSEL : INDGREB BOR KUN FORETAGES AF EN FAGMAND DA DER ER RISIKO FOR RADIOAKTIV STRLING. ADVARSEL : USYNLIG LASERSTRLING VED BNING. UNDG UDSAETTELSE FOR STRLING. Finnish VARO! : AVATTAESSA OLET ALTTIINA NKYMTTMLLE LASERSTEILYLLE. L KATSO STEESEEN. q R

21、, G models CLASS 1 LASER PRODUCT CDC-775 CDC-775 I REAR PANELS MU, C models MR model MA model MG model 3 CDC-775 CDC-775 4 CAUTION FOR TRANSPORTING THIS UNIT When transporting this unit, first remove all discs from the disc tray and close the tray by pressing the OPEN/CLOSE but- ton, and then switch

22、 off the power after you confirm that the display has turned as follows. Never switch off the power if the display does not turn as above, otherwise the unit will get out of order during transport because the internal mechanism is not locked. 5324 I SPECIFICATIONS I AUDIO SECTION Output Voltage2.00.

23、5V S/N Ratio115dB Dynamic Range100dB Harmonic Distortion+Noise (1kHz)0.0025% Frequency Response (2Hz20kHz)0.5dB Headphone Output 150, 1kHz, 20dB Input20040mV I GENERAL Power Requirements U, C models120V AC 60Hz G model230V AC 50Hz A model240V AC 50Hz R model110/120/220/240V AC 50/60Hz Power Consumpt

24、ion20W Dimensions (W x H x D)435 x 116 x 404 mm (17-1/8” x 4-9/16” x 15-7/8”) Weight5.8kg (12 lbs 12 oz) AccessoriesPin plug cord Remote control transmitter Dry-cell: x2 (Size “AA”, R06) U . USA model C . Canadian model A . Australian model G . European model R . General model * Specifications subje

25、ct to change without notice. I INTERNAL VIEW 12 5 43 q P.C.B. MAIN (2) w CLAMP ASSY e CM-210 UNIT r P.C.B. MAIN (1) t TRAY ASSY 435 (17-1/8) 16 (5/8) 100 (3-15/16) 116 (4-9/16) 394 (15-1/2) 404 (15-7/8) 4 (3/16) 6 (1/4) G DIMENSION Unit : mm (inch) CDC-775 CDC-775 5 I DISASSEMBLY PROCEDURES (Remove

26、parts in the order as numbered.) 4. Removal of Table a. Remove 1 screw ( t ) and then remove the Support/ T as shown in Fig. 1. b. Remove the Plate/Table as shown in Fig. 1. c. Remove 1 screw ( y ) and then take off the Table as shown in Fig. 1. Fig. 2 1. Removal of Top Cover a. Remove 4 screws ( q

27、) and also 3 screws ( w ) as shown in Fig. 1. 2. Removal of Clamp Assy a. Remove 2 screws ( e ) as shown in Fig. 1. 3. Removal of Tray Assy a. Remove 1 screw ( r ) as shown in Fig. 1. b. Turn Gear/L0 as shown in Fig. 2 counter clockwise gradually till immediately before the tray starts to move and s

28、top it there. CAUTION : Gear/L0, if turned counter clockwise con- tinuously, will mesh with the gear of the tray and the tray will come out. When re- moving the tray, use care so that Gear/L0 will not mesh with the gear of the tray. c. Pull out the Tray Assy. Fig. A IMPORTANT : Installation of Table

29、. Install the table according to the following procedure. 1) Slide the Lever so that the Gear/RT1 be- comes free. (Fig.B-1) 2) With the “L” mark on the Gear/RT1 aligned with the same mark on the Tray, lock it with the Lever. (Fig.B-1) 3) Install the Table by aligning it to the thick line on “ / ” ma

30、rk. (Fig.B-2) *Check that the Table is locked after installation. Fig. B-2 GPrecaution for installation of the Tray Assy. On Tray Assy setting. Check the Direction of marking “L” on gear according to this drawing. Fig. 1 Gear/L0 Front Panel Gear/L01 Lever Tray Gear/RT1 Fit the Gear/RT1 to “L” mark.

31、Fig. B-1 Tray Table Marking Fit the table to the thick line on “ / ” mark. q q w Table Tray y Tray Gear/L0 r t e Top Cover Plate/Table Clamp Assy Support/T Front Panel Lock Unlock CDC-775 CDC-775 6 5. Removal of CM-210 Unit a. Remove 5 screws ( u ) as shown in Fig. 3. b. Remove connectors (CB201 & 2

32、02) and cables (CB1 & 2, CB300) from the P.C.B. Main. c. Take the CM-210 Unit out slowly as shown in Fig. 3. 6. Removal of PU Mechanism Unit a. Remove 2 screws ( i ) and then remove the PU Unit Assy as shown Fig. 4. b. Pull out 4 Pins ( o ) and then remove the PU Mechanism Unit as shown in Fig. 5. F

33、ig. 5 Fig. 4 Fig. 3 G Operation Check Procedure q Disassembly 1) Remove the top cover. 2) Remove the Clamp Assy. 3) Remove the stabilizer from the Holder. Turn the Plate clockwise by 30 while holding the Stabilizer, and the Plate will come off. Remove the Stabilizer from the Holder. w Clamp the disc

34、 by using the stabilizer. e Set to the TEST mode and check for any faulty conditions. Fig. C PU Mechanism Unit PU Unit Assy oo Holder Lock Unlock u u u CM-210 Unit i Stabilizer Frame/Clamper Plate Plate CB201 CB1 CB2 CB300 CB202 CDC-775 CDC-775 I STANDARD OPERATION CHART “OPEN” appears on the displa

35、y. “TRV” signal is output until detection of LIMIT switch. if FLSW = L (IC301, pin 21) Proceed to next step. LSON = “H” (IC1, pin 3) Press OPEN/CLOSE key. Forced feed return operation. Clamp down operation. Tracking Offset auto ADJ. Focus Offset auto ADJ. Disc mechanism unit clamped up. Feed inward

36、switch research. Laser ON. Disc scan. FOCUS Gain rough ADJ. FOCUS Search operation. Spindle motor accelerated. TRACKING servo ON. Disc servo ON VCO lock. Disc table reset. Tray open. Tray closed. Table rotate. Disc research. Proceeds to next step after detection of CLAMP switch. (SW400) Stop after d

37、etection of LOADING switch. (SW401) Proceeds to next step after detection of LOADING switch. (SW401) DISC “1” is turned to DM clamp position. Proceeds to next step after detection of CLAMP switch (SW401) Tracking Gain rough ADJ. Tracking Balance ADJ. (only Tray OPEN/CLOSE) FOCUS BALANCE ADJ. FOCUS L

38、OCK servo ON. “DISC” flash. “DISC” from flashing to lighting. Load a disc in “DISC 1”. Press PLAY key or push the tray. FLOCK = “H” “L” (IC301, pin 8) TLOCK = “H” “L” (IC301, pin 7) 7 A CDC-775 CDC-775 8 Press the STOP key. FOCUS GAIN ADJ. TRACKING GAIN ADJ. After searching the beginning, MUTE is ca

39、ncelled. MUTE ON. TRACK search. After searching the beginning, MUTE is cancelled. MUTE ON. Spindle motor stop. Laser OFF. Forced feed return. *TOC READ Data fetch cycle * TRACK No. “1” is searched. PLAY Set to SEARCH by means of Y,Tkey. PLAY STOP : MUTE OFF = “H” “L” : MUTE OFF = “L” “H”, “0:00” app

40、ears on the display. : LSON = “H” “L” (IC1, pin 3) : MUTE OFF = “L” “H”, “0:00” appears on the display. (IC301, pin 4) : FLSW = “L” (IC301, pin 21) A CDC-775 CDC-775 I TEST MODE GStarting TEST mode Test mode is brought about when the power is turned on while the “PLAY/PAUSE” and “STOP” keys on the p

41、anel are simultaneously pressed and held. When the test mode is brought about, all the displays light up for about 1 second. (TEST on display) NOTE : To fully operate all test modes the remote control must be used. 9 GFunction List of Panel keys Note: “traverse servo” means the same as “feed servo”

42、FUNCTION Tray open/close. Rotating the mode of coefficients. (Coefficient modeCoefficient settingProduct mode) Press- ing twice will set to the product mode. Plays if focus servo is effective. TRON, MUTE OFF. All stop. (Focus, spindle, feed, laser, tray, etc.) Initializes FL display. Backward traver

43、se move. (If inner SW turns on, traverse is stopped.) (Coefficient set up mode : upper digit down.) Forward traverse move. (Coefficient set up mode : upper digit up.) Returns to product mode. (Tray and table inoperative.) Adjustment mode 1 (TR-offset, FO-offset, FO-rough gain adjustment) Adjustment

44、mode 2 (TR-balance, TR-rough gain adjustment) Adjustment mode 3 (FO-fine gain, TR-fine gain, FO-balance adjustment) If not clamped up, measurement the rotating time of the turn table. (Slow speed) (Note 2 :See page 11) If clamped up, enter EQSW adjustment mode. (In adjustment mode, save EQSW value t

45、o EEPROM.) Decelerates or stops spindle. Output level down. (Coefficient set up mode : address down.) (EQSW adjustment mode : value down) Output level up. (Coefficient set up mode : address up.) (EQSW adjustment mode : value up) Returns to product mode. (tray and table inoperative.) Adjustment mode

46、1 (TR-offset, FO-offset, FO-rough gain adjustment) Adjustment mode 2 (TR-balance, TR-rough gain adjustment) Adjustment mode 3 (FO-fine gain, TR-fine gain, FO-balance adjustment) Turn table turns counterclockwise. (Slow speed) Turn table turns clockwise. (Slow speed) Turn table turns counterclockwise. (Fast speed) Turn table turns clockwise. (Fast speed) Backward 10 TRACK KICK-continuously Forward 10 TRACK KICK-continuously PANEL KEY OPEN/CLOSE PLAYXCHANGE PLAY/PAUSE STOP TSKIP YSKIP DISC 1 DISC 2 DISC 3 DISC 4 DISC 5 PROG OUTPUT LEVEL OUTPUT LE