Yamaha-YPC1-pre-sm(1) 维修电路原理图.pdf

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1、100877P.O.Box 1, Hamamatsu, JapanI CONTENTSFRONT PANEL . 3REAR PANEL . 3SPECIFICATIONS. 3INTERNAL VIEW . 4DISASSEMBLY PROCEDURES / 分解手順. 57BLOCK DIAGRAM. 7PRINTED CIRCUIT BOARD . 8SCHEMATIC DIAGRAM . 9EXPLODED VIEW. 10MECHANICAL PARTS . 11SERVICE MANUALPASSIVE CONTROLLERYPC-1YPC-1IMPORTANT NOTICEThi

2、s manual has been provided for the use of authorized YAMAHA Retailers and their service personnel.It has been assumed that basic service procedures inherent to the industry, and more specifically YAMAHA Products, are alreadyknown and understood by the users, and have therefore not been restated.WARN

3、ING:Failure to follow appropriate service and safety procedures when servicing this product may result in personalinjury, 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

4、 performed by an authorizedYAMAHA Retailer or the appointed service representative.IMPORTANT:The presentation or sale of this manual to any individual or firm does not constitute authorization, certification orrecognition of any applicable technical capabilities, or establish a principle-agent relat

5、ionship of any form.The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, andservice departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitableand specifications are subje

6、ct to change without notice or obligation to retrofit. Should any discrepancy appear to exist, pleasecontact the distributors Service Division.WARNING:Static discharges can destroy expensive components. Discharge any static electricity your body may haveaccumulated by grounding yourself to the groun

7、d buss in the unit (heavy gauge black wires connect to this buss).IMPORTANT:Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.RadioFans.CN 收音机爱 好者资料库2YPC-1YPC-1I REAR PANELI FRONT PANEL製品使用基板付側 （14箇所） 配線付、Sn+Ag+Cu （錫+銀+銅）合金無鉛使用。無鉛種類、修理時下記無

8、鉛使用推奨。Sn+Ag+Cu （錫+銀+銅）Sn+Cu （錫+銅）Sn+Zn+Bi （錫+亜鉛+）注意： 無鉛融点温度通常鉛入比3040程度高、合使用。 鉛入使得場合、交換部品端子部周辺部無鉛取除、無鉛鉛入十分溶状態付。The foil side of all P.C.B.s used for this product and thewire on the positive (+) side of the pin jack (at 14 points)are soldered with lead-free soldering material which is analloy of Sn+Ag

9、+Cu (tin + silver + copper).Among some types of lead-free solder currently available,it is recommended to use one of the following types for therepair work. Sn + Ag + Cu (tin + silver + copper) Sn + Cu (tin + copper) Sn + Zn + Bi (tin + zinc + bismuth)Caution:1. As the melting point temperature of t

10、he lead-free solderis about 30C to 40C (50F to 70F) higher than that ofthe lead solder, be sure to use a soldering iron suitableto each solder.2. If lead solder must be used, be sure to remove lead-free solder from each terminal section of the parts to bereplaced and from the area around it complete

11、ly beforesoldering, or make sure that the lead-free solder andlead solder melt together fully.About lead-free solder / 無鉛RadioFans.CN 收音机爱 好者资料库3YPC-1YPC-1239.5 (9-7/16)60(2-3/8)12.5(1/2)17(11/16)15(9/16)269 (10-9/16)75 (2-15/16)240 (9-7/16)Unit : mm (inch)単位: mm（）Input Connectors / 入力端子. Five stere

12、o pairs (RCA pin jacks)Output Connectors / 出力端子. Two stereo pairs (RCA pin jacks)Input Impedance / 入力. 10 k-ohmsMaximum Input Signal Level / 最大許容入力. 30VOutput Impedance / 出力.10 k-ohms or lessVolume Maximum Attenuation / 最大減衰量. 120 dBVolume LR Tracking Tolerance / 連動誤差. 1 dB (-100 dB to 0 dB)Dimensio

13、ns / 寸法 (W x H x D). 240 x 75 x 269 mm (9-7/16 x 2-15/16 x 10-9/16)Weight / 重量. 3.4 kg (7 lbs. 8 oz.)*Specifications are subject to change without notice dueto product improvements. 参考仕様外観予告変更。I SPECIFICATIONS / 参考仕様I INTERNAL VIEWDIMENSIONS / 寸法図21341 ROTARY SWITCH2 MAIN (2) P.C.B.3 MAIN (1) P.C.B.

14、4 ROTARY POTENTIOMETER4YPC-1YPC-144Top CoverBottom Cover1223Cloth布3. Removal of Front Panel (Fig. 3)a. Remove 1 screw (5).b. Remove the Front Panel.4. Removal of Knob (Fig. 3)a. Using a 1.5mm hexagon wrench, loosen 2 screws (6).* These screws should be loosened only and notremoved.b. Remove the Knob

15、 / D22.c. Using a 1.5mm hexagon wrench, loosen 2 screws (7).* These screws should be loosened only and notremoved.d. Remove the Knob / D31.e. Remove the 2 screws (8).f. Remove the Escutcheon/VOL.Note) When installing the Escutcheon/VOL, be sure todirect it so that its slit is on the right side.5. Re

16、moval of Rotary Potentiometer, RotarySwitch (Fig. 3)a. Remove the nut (9).b. Remove 3 screws (0).c. Loosen 2 screws (A) to remove the Sub-chassis.d. Remove the Rotary Potentiometer and the RotarySwitch.3. 外方 （Fig. 3）a.51本外。b. 外。4. 外方 （Fig. 3）a. 1.5mm6角使、62本緩。緩。外。b. /D22外。c. 1.5mm6角使、72本緩。緩。外。d. /D31

17、外。e.82本外。f. /VOL外。注）/VOL取付場合、右側取付。5. 2連VR、SW外方 （Fig. 3）a.9外。b.03本外。c.A2本外、取外。d. 2連VRSW取外。I DISASSEMBLY PROCEDURES / 分解手順（番号順部品取外。）1. 外方 （Fig. 1）a. 軟布敷、上本機上下反転置。b.13本、25本外。c. 外。2. 外方a.31本外。 （Fig. 1）b. 本機上向、44本外。 （Fig. 2）c. 後方取外。 （Fig. 2）(Remove parts in the order as numbered.)1. Removal of Bottom Cov

18、er (Fig. 1)a. Spread a soft cloth and place the unit on it upside down.b. Remove 3 screws (1) and 5 screws (2).c. Remove the Bottom Cover.2. Removal of Top Covera. Remove 1 screw (3). (Fig. 1)b. Set the main unit with its top facing up and remove 4screws (4). (Fig. 2)c. Remove the Top Cover by slidi

19、ng it rearward. (Fig. 2)Fig. 1Fig. 25YPC-1YPC-1NutNutWasherPin JackTubeLug Terminal端子() 端子(+) TerminalAUDIO INPUT12345VOLUMEINPUTAUDIO OUTPUT1212345Front PanelKnob / D22/D22Knob / D31/D31Escutcheon / VOLVOLSlitSub ChassisRotary SwitchSWRotary Potentiometer2連VR56677889AA0Fig. 36. Removal of PIN JACK

20、(Fig. 4)a. Remove the Tube fitted to the positive (+) terminal.b. Remove the solder.c. Remove the Nut.d. Remove the Lug Terminal.e. Remove the Nut and Washer.f. Remove the Pin Jack.Fig. 46. 外方 （Fig. 4）a. + （） 端子付外。b. 外。c. 外。d. 端子外。e. 、外。f. 外。I BLOCK DIAGRAMABCDE12345676YPC-1VOLUMEINPUTL1551422433RAU

21、DIO OUTPUTAUDIO INPUTL1L2L3L4R1R2R3R4R5L5R1L1R2L2REBEREBEREBEREBEREBEREREREREREREREBEBEREREBEBEBEREREBEREBEBEBEBEBEBEBEMAIN (2) P. C. B.MAIN (1) P. C. B.(Lead Type Device)(Lead Type Device)REBEI PRINTED CIRCUIT BOARD (Foil side)ABCDE12345677YPC-1YPC-1MAIN (2)MAIN (1)I SCHEMATIC DIAGRAMABCDE12345678Y

22、PC-1545450505339551255113354555836513561VR1SW14140533854545252514737425143514454455660464546Use a 1.5 mm hexagon wrench to loosen the screws securing these knobs.六角（1.5mm）使用固定。The double-faced tape is attached.両面接着付。Included in SW1 . SW1 含。Included in 12 . 12 含。Included in VR1 . VR1 含。Included in 11

23、 . 11 含。I EXPLODED VIEW9YPC-1YPC-1I MECHANICAL PARTS New Parts 新規部品 （#部品、 基板含）SchmRef.PART NO.DescriptionRemarksMarkets部品名Rank*SW1WC278300ROTARY SWITCH2R5-A*VR1WB854100ROTARY POTENTIOMETERA10K RK50112A0連*11WB855100PIN JACKRE*12WB855200PIN JACKWH*33WB915700BOTTOM COVER*35WC235700SUPPORT/WIRE*36WC5272

24、00SHEET/INS絶縁*37WC342600FRONT PANEL*38WC342700SIDE PANEL L*39WC342800SIDE PANEL R*40WB916700TOP PANEL*41WB917000REAR PANEL*42WB917400KNOB/D31with 2 screwsBL付*43WB917500KNOB/D22with 2 screwsBL付*44WB917700ESCUTCHEON/VOLBL45WB837500LEG46WB837600LEG/PAD47V6004800EMBLEMBL50WC187400WASHER 3.9-951EP600190B

25、IND HEAD B-TIGHT SCREW3x8 MFZN2BL0152VN413300BIND HEAD BONDING B-T. SCREW3x8 MFZN2BL0153V6012200FLAT FILLISTER HEAD SCREW4x12-10 MFC2BL平54EG330360BIND HEAD SCREW3x6 MFZN2BL小0155VZ537900BIND HEAD BONDING B-T. SCREW3x8 MFC2*56V6952700SCREW TAPPING #B3x6-8 MFZN2BL*58WB936600SCREW CUP60EP600140BIND HEAD B-TIGHT SCREW3x10 MFZN2BL61VB659000BIND HEAD SCREW3x8 MFZN2BL小YPC-1