Yamaha-CDXE-400-Service-Manual电路原理图.pdf

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1、100808 SERVICE MANUAL CDX-E400 IMPORTANT NOTICE This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel. It has been assumed that basic service procedures inherant to the industry, and more specifically YAMAHA Products, are already known and understood by

2、 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, destruction of expensive components and failure of the product to perform as specified. For these reasons, we advise all YA

3、MAHA product owners that all service required should be performed by an authorized YAMAHA Retailer or the appointed service representative. IMPORTANT:The presentation or sale of this manual to any individual or firm does not constitute authorization, certification or recognition of any applicable te

4、chnical 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. The research, engineering, and service departments of YAMAHA are continually striving to improve YAMAHA products. Modifica

5、tions are, therefore, inevitable and specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the distributors Service Division. WARNING:Static discharges can destroy expensive components. Discharge any static electricity y

6、our body may have accumu- lated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss). IMPORTANT:Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to the unit. IC DATA .1519 DISPLAY DATA .20 BLOCK DIAGRAM

7、.21 PRINTED CIRCUIT BOARD .2223 IC BLOCK .24 PIN CONNECTION DIAGRAM.24 SCHEMATIC DIAGRAM.25 PARTS LIST.2734 PARTS LIST FOR CARBON RESISTORS .35 I CONTENTS TO SERVICE PERSONNEL .23 PREVENTION OF ELECTRO STATIC DISCHARGE.4 REAR PANELS.4 SPECIFICATIONS.5 INTERNAL VIEW .5 DISASSEMBLY PROCEDURES .68 STAN

8、DARD OPERATION CHART.910 TEST MODE.1112 ERROR MESSAGE.1314 The CRX-E400 is composed of the RX-E400 and the CDX-E400. This service manual is for the CDX-E400. For the RX-E400 service manual, please refer to the following publication number : RX-E400100809 For the system operation, please refer to the

9、 service manual for the RX-E400. MINI COMPONENT SYSTEM CRX-E400 CDX-E400 RadioFans.CN 收音机爱 好者资料库 CDX-E400 2 CDX-E400 I TO SERVICE PERSONNEL 1. Critical Components Information Components having special characteristics are marked Z and must be replaced with parts having specifications equal to those o

10、riginally installed. 2. Leakage Current Measurement (For 120V Models 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 curren

11、t must not exceed 0.5mA. GBe sure to test for leakage with the AC plug in both polarities. AC LEAKAGE TESTER OR EQUIVALENT EQUIPMENT UNDER TEST INSULATING TABLE WALL OUTLET WARNING: CHEMICAL CONTENT NOTICE! The solder used in the production of this product contains LEAD. In addition, other electrica

12、l/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/or birth defects or other reproductive harm. DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPON

13、ENTS 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! If you come in contact with solder or components located inside the enclosure of this product, wash your ha

14、nds before handling food. THIS PRODUCT SHOULD NOT BE ADJUSTED OR REPAIRED BY ANYONE EXCEPT PROPERLY QUALIFIED SERVICE PERSONNEL. WARNING: Laser Safety This product contains a laser beam component. This component may emit invisible, as well as visible radiation, which may cause eye damage. To protect

15、 your eyes and skin from laser radiation, the following precautions must be used during servicing of the unit. 1) When testing and/or repairing any component within the product, keep your eyes and skin more than 30 cm away from the laser pick-up unit at all times. Do not stare at the laser beam at a

16、ny time. 2) Do not attempt to readjust, disassemble or repair the laser pick-up, unless noted elsewhere in this manual. 3) CAUTION : Use of controls, adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. Laser Emitting conditions: 1) W

17、hen the Top Cover is removed, and the “STANDBY/ON” SW is turned to the ON position, the laser component will emit a beam for several seconds to detect if a disc is present. During this time (5-10 sec.) the laser may radiate through the lens of the laser pick-up unit. Do not attempt any servicing dur

18、ing this period! If no disc is detected, the laser will stop emitting the beam. When a disc is set, you will not be exposed to any laser emissions. 2) The laser power level can be adjusted with the VR on the pick-up PWB. However, this level has been set by the factory prior to shipping from the fact

19、ory. Do not adjust this laser level control unless instruction is provided elsewhere in this manual. Adjustment of this control can increase the laser emission level from the device. RadioFans.CN 收音机爱 好者资料库 CDX-E400 CDX-E400 3 Laser Diode Properties GMaterial: GaAlAs GWavelength: 780 nm GEmission Du

20、ration : 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. When checking the laser diode emission, keep your eyes more than 30 cm away from the objective lens. VARO!: AVATTAESSA JA SU

21、OJALUKITUS OHITETTAESSA OLET ALTTIINA NKYMTTMLLE LASER-STEILYLLE. L KATSO STEESEEN. VARNING! : OSYNLIG LASERSTRLNING NR DENNA DEL R PPNAD OCH SPRREN R URKOPPLAD. BETRAKTA EJ STRLEN. Optical Pick-up CDX-E400 4 CDX-E400 I REAR PANELS M R model M G model M B model 240V SERIAL LABEL SERIAL LABEL I PREVE

22、NTION OF ELECTRO STATIC DISCHARGE The laser diode in the CD mechanism unit (optical pickup) may be damaged due to static electricity from clothes or the human body. Use caution to prevent electrostatic damage when servicing or handling the laser diode. 1. Grounding for electrostatic damage preventio

23、n 1. Worktable grounding Put a grounded conductive material (sheet) or iron sheet on the area where the optical pickup is placed. 2. Human body grounding Use an anti-static wrist strap to discharge the static electricity from your body. 2. Handling of the optical pickup Do not use a tester to check

24、the laser diode in the optical pickup. The power supply in the tester will damage the laser diode. 3. Handling Precautions for the CD mechanism Unit (Optical Pickup) 1. Handle the CD mechanism unit (optical pickup) gently, as it is an extremely high-precision assembly. 2. The flexible cable lines ma

25、y break if an excessive force is applied to it. Use caution when handling the cable. 3. The semi-fixed resistor for laser power adjustment should not be adjusted. Do not turn the resistor. 1M Conductive material (sheet) or steel sheet Anti-static wrist strip CDX-E400 CDX-E400 5 G DIMENSIONS Unit : m

26、m (inch) I SPECIFICATIONS Output Level 1kHz, 0dB2.0 0.5Vrms Signal to Nosie Ratio (EIAJ)102dB Dynamic Range95dB Harmonic Distortion+Noise (1kHz)0.004% Frequency Response 2Hz 20kHz0.5dB Power Requirements B, G models230V AC 50Hz R model110/120/220/240V AC 50/60Hz Power Consumption10W Dimensions (W x

27、H x D)217 x 108 x 346mm (8-9/16 x 4-1/4 x 13-5/8) Weight3.0kg (6 lbs 9 oz) Finish Gold colorR, G models Silver colorG, B models *Specifications are subject to change without notice. B . British model G . European model R . General model qMAIN (3) P.C.B. wMAIN (4) P.C.B. (R model only) eMAIN (1) P.C.

28、B. rCD MECHANISM UNIT tMAIN (2) P.C.B. I INTERNAL VIEW 217(8-9/16) 100(3-15/16) 8 (5/16) 108(4-1/4) 335(13-3/16) 346(13-5/8) q rt ew CDX-E400 6 CDX-E400 I DISASSEMBLY PROCEDURES (Remove parts in disassembly order as numbered.) 1. Removal of Top Cover a. Remove 4 screws ( q ) and 4 screws ( w ) in Fi

29、g. 1. b. Lift the Top Cover at the rear and move it rear-ward slantingly. 2. Removal of Front Panel a. Remove a connector (CB102) in Fig. 2. b. Remove 2 screws ( e ) and 2 screws ( r ) in Fig. 1. c.Remove 2 hooks and then pull the Front Panel forward. 3. Removal of CD Mechanism Unit a. Remove a conn

30、ector (CB1) in Fig. 2. b. Remove W2 and W3 from the CD Mechanism in Fig. 2. c. Remove 4 screws ( t ) in Fig. 1. d. Remove the CD Mechanism Unit in Fig. 1. Fig. 2 Fig. 1 e e q q w r Top Cover CD Mechanism Unit Front Panel w t t W2 W3 CB1 CB102 Hook Hook CDX-E400 CDX-E400 7 GServicing Position a. Remo

31、ve the Top Cover, Front Panel and CD Mechanism Unit. b. Remove 3 screws (y) and 2 screws (u) in Fig. 3. c. Loosen the style pin (PN1) to set W401 free in Fig. 3. d. With the rear panel attached, remove the Main P.C.B. e. With the rear panel attached, set the Main P.C.B on its side as shown in Fig. 4

32、. At this time, fit the cut in the rear panel with the main chassis as shown in Fig. 4. f. Replace the PU cable of the CD Mechanism with the below specified extension cable. Extension cable 16P 230 mm: V3340500 g. Install the CD Mechanism to the frame mechanism. h. Connect CB1 as shown in Fig. 5. i.

33、 Connect W2 and W3 to the CD Mechanism as shown in Fig. 6. j. Place the front panel on the base as shown in Fig. 6. Base height: 10cm k. Connect CB102 as shown in Fig. 6. l. Connect the power cable, turn on the power and check for operation. Fig. 3 Fig. 4 Cut Main P.C.B. y Rear Panel y u u Style Pin

34、 (PN1) W401 Main P.C.B. Fig. 5 Fig. 6 CB1 Extension cable W2 W3 CB102 Base CDX-E400 8 CDX-E400 Disc Table Pick-up HeadGear A Sled Shaft 19.4 0.2mm Stopper Check that the disc table height is as specified below. Fig. 9 Fig. 7 Fig. 8 Stopper i Stopper Pin o Sub Chassis (S) !0 !0 Chucking Unit Stopper

35、Hook Drive Gear Drive Unit 5. Removal of Pick-up Head a. Remove 2 screws ( o ) in Fig. 8. b. Remove a pick-up cable in Fig. 8. c. Remove 4 screws ( !0 ) and then remove the Drive Unit in Fig. 8. d. Remove the gear A in Fig. 9. e. Pull out the Sled Shaft in Fig. 9. f. Remove the Pick-up Head. 4. Remo

36、val of Tray Unit a. Remove 2 screws ( i ) and then remove the Chuck- ing Unit in Fig. 7. b. Remove 1 hook and then remove the Stopper Pin in Fig. 7. c. Rotate the Drive Gear and then open the Tray Unit in Fig. 7. d. Detach the Stoppers on both sides and then pull out the Tray in Fig. 7. Pick-up Cabl

37、e CDX-E400 CDX-E400 9 I STANDARD OPERATION CHART A Press OPEN/CLOSE key. Forced feed return operation Clamp down operation Tray open Tracking offset auto ADJ Focus offset auto ADJ Load a disc. Press PLAY key or push the tray. Tray closed Disc mechanism unit clamped up. Feed inward switch research. L

38、aser ON Disc scan Focus gain rough ADJ Focus search operation Focus lock servo ON Spindle motor accelerated. Tracking servo ON Spindle servo ON Feed servo ON “ OPEN ” appears in the indicator. “TRV” signal is output until detection of LIMIT switch. Stop after detection of LOADING switch. Proceeds to

39、 next step after detection of LOADING switch. if FLSW = L, (IC103, 21 pin) Proceeds To Next Step. LSON = “L” (IC101, 2 pin) FLOCK = “H” “L” (IC102, 11 pin) TLOCK = “H” “L” (IC102, 12 pin) POWER ONIf a disc is not loaded, “ : ” appears in the time indicator. VCO lock CDX-E400 10 CDX-E400 A Tracking g

40、ain rough ADJ * Data fetch cycle After searching the beginning, MUTE is cancelled. PLAY MUTE ON TRACK search MUTE ON Spindle motor stop : MUTE OFF = “H” “L” (Q7 Collector) “0:00” appears in the time indicator. Tracking balance ADJ (only tray OPEN/CLOSE) Focus balance ADJ Focus gain ADJ Tracking gain

41、 ADJ * TOC READ TRACK NO. “1” is searched. Set to SEARCH by means of Y, T key. After searching the beginning, MUTE is cancelled. PLAY Press the STOP key. Laser OFF Forced feed return STOP : MUTE ON = “L” “H” (Q7 Collector) : MUTE ON = “L” “H” (Q7 Collector) : FLSW (IC103, 21 pin) = “L” : MUTE OFF =

42、“H” “L” (Q7 Collector) “0:00” appears in the time indicator. : LSOFF = “L” “H” (IC101, 2 pin) CDX-E400 CDX-E400 11 I TEST MODE When the power off, press the “STANDBY/ON” key while pressing the “ a ” key and the “ w/d ” key and then release your fingers from those keys. Note: At this time, “ a ” key

43、must be pressed before “ w/d ” key is pressd. Otherwise “ w/d ” key operation causes product mode. When the test mode started, the following messages are displayed. Test1 After a second GTest Mode Function List of Panel keys PANEL KEY f (OPEN/CLOSE) w/d (PLAY/PAUSE) a (STOP) TTTTT/EEEEE (SKIP/SEARCH

44、) RRRRR/YYYYY (SKIP/SEARCH) FUNCTION Execute the test command selected with the SKIP/SEARCH keys Plays if focus servo is effective. TRON, MUTE OFF. All stop. (Focus, spindle, feed, laser, tray, etc.) Initializes FL display Decrement the test command number. Increment the test command number. 02:Auto

45、Adj 2 Command No.Command Name Sample of display of test command Command Name Op/Cl AutoAdj 1 AutoAdj 2 AutoAdj 3 TV Rev TV Fwd TV Stop SP Accel SP Brake SP SV.On SP SV.Off SP Stop FO Search TR,TV Off 1Kick Rev 1Kick Fwd 10 K. Rev 10 K. Fwd 30 K. Rev 30 K. Fwd FUNCTION Tray open/close. Auto adjustmen

46、t mode 1 (TR-off set, FO-off set, FO-rough gain adjustment) Auto adjustment mode 2 (TR-balance, TR-rough gain adjustment) Auto adjustment mode 3 (FO-fine gain, TR-fine gain, FO-balance adjustment) Move traverse reverse till the inner SW turn on. Move traverse forward. Stop traverse. Accelerate spindle. Decelerate spindle. Spindle servo on. Spindle free (servo off) Stop spindle. FOON, TROF (Enter focus search if focus servo is off.) FOON, TROF, TVOF(FEOF) (Enter focus search if focus servo is off.) Reverse 1 track kick continuously. Forward 1 track kick continuously. Reverse 10 tracks