Yamaha-YPC1-pre-sm电路图 维修手册.pdf

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1、100877 P.O.Box 1, Hamamatsu, Japan I CONTENTS FRONT PANEL . 3 REAR PANEL . 3 SPECIFICATIONS. 3 INTERNAL VIEW . 4 DISASSEMBLY PROCEDURES / 分解手順. 57 BLOCK DIAGRAM. 7 PRINTED CIRCUIT BOARD . 8 SCHEMATIC DIAGRAM . 9 EXPLODED VIEW. 10 MECHANICAL PARTS . 11 SERVICE MANUAL PASSIVE CONTROLLER YPC-1 YPC-1 IM

2、PORTANT 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 inherent to the industry, and more specifically YAMAHA Products, are already known and understood by the users, and have therefore no

3、t 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 YAMAHA product owners that any ser

4、vice 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 technical capabilities, or establi

5、sh 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. Modifications are, therefore, inevitable

6、 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 your body may have accumulated by

7、 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 part replacement. Recheck all work before you apply power to the unit. RadioFans.CN 收音机爱 好者资料库 2 YPC-1 YPC-1 I REAR PANEL I FRONT PANEL 製品使用基板付 側 （14箇

8、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 the wire on the positive (+) side of the pin jack (at 14 points) are soldered wit

9、h lead-free soldering material which is an alloy of Sn+Ag+Cu (tin + silver + copper). Among some types of lead-free solder currently available, it is recommended to use one of the following types for the repair work. Sn + Ag + Cu (tin + silver + copper) Sn + Cu (tin + copper) Sn + Zn + Bi (tin + zin

10、c + bismuth) Caution: 1. As the melting point temperature of the lead-free solder is about 30C to 40C (50F to 70F) higher than that of the lead solder, be sure to use a soldering iron suitable to each solder. 2. If lead solder must be used, be sure to remove lead- free solder from each terminal sect

11、ion of the parts to be replaced and from the area around it completely before soldering, or make sure that the lead-free solder and lead solder melt together fully. About lead-free solder / 無鉛 RadioFans.CN 收音机爱 好者资料库 3 YPC-1 YPC-1 239.5 (9-7/16) 60 (2-3/8) 12.5 (1/2) 17 (11/16) 15 (9/16) 269 (10-9/1

12、6)75 (2-15/16) 240 (9-7/16) Unit : mm (inch) 単位: mm（） Input Connectors / 入力端子 . Five stereo pairs (RCA pin jacks) Output Connectors / 出力端子 . Two stereo pairs (RCA pin jacks) Input Impedance / 入力 . 10 k-ohms Maximum Input Signal Level / 最大許容入力 . 30V Output Impedance / 出力 .10 k-ohms or less Volume Max

13、imum Attenuation / 最大減衰量 . 120 dB Volume LR Tracking Tolerance / 連動誤差 . 1 dB (-100 dB to 0 dB) Dimensions / 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 due to product improvements. 参考仕様外観予告変更

14、。 I SPECIFICATIONS / 参考仕様 I INTERNAL VIEW DIMENSIONS / 寸法図 2134 1 ROTARY SWITCH 2 MAIN (2) P.C.B. 3 MAIN (1) P.C.B. 4 ROTARY POTENTIOMETER RadioFans.CN 收音机爱 好者资料库 4 YPC-1 YPC-1 4 4 Top Cover Bottom Cover 1 2 2 3 Cloth 布 3. Removal of Front Panel (Fig. 3) a. Remove 1 screw (5). b. Remove the Front Pa

15、nel. 4. Removal of Knob (Fig. 3) a. Using a 1.5mm hexagon wrench, loosen 2 screws (6). * These screws should be loosened only and not removed. b. Remove the Knob / D22. c. Using a 1.5mm hexagon wrench, loosen 2 screws (7). * These screws should be loosened only and not removed. d. Remove the Knob /

16、D31. e. Remove the 2 screws (8). f. Remove the Escutcheon/VOL. Note) When installing the Escutcheon/VOL, be sure to direct it so that its slit is on the right side. 5. Removal of Rotary Potentiometer, Rotary Switch (Fig. 3) a. Remove the nut (9). b. Remove 3 screws (0). c. Loosen 2 screws (A) to rem

17、ove the Sub-chassis. d. Remove the Rotary Potentiometer and the Rotary Switch. 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 P

18、ROCEDURES / 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 Cover (Fig. 1) a. Spread a soft cloth and place the unit on it upside down. b. Remove 3 screws (

19、1) and 5 screws (2). c. Remove the Bottom Cover. 2. Removal of Top Cover a. Remove 1 screw (3). (Fig. 1) b. Set the main unit with its top facing up and remove 4 screws (4). (Fig. 2) c. Remove the Top Cover by sliding it rearward. (Fig. 2) Fig. 1Fig. 2 5 YPC-1 YPC-1 Nut Nut Washer Pin Jack Tube Lug

20、Terminal 端子 () 端子 (+) Terminal AUDIO INPUT 1 2 3 4 5 VOLUME INPUT AUDIO OUTPUT 1 2 1 2 3 4 5 Front Panel Knob / D22 /D22 Knob / D31 /D31 Escutcheon / VOL VOL Slit Sub Chassis Rotary Switch SW Rotary Potentiometer 2連VR 5 6 6 7 7 8 8 9A A 0 Fig. 3 6. Removal of PIN JACK (Fig. 4) a. Remove the Tube fit

21、ted 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. 4 6. 外方 （Fig. 4） a. + （） 端子付外。 b. 外。 c. 外。 d. 端子外。 e. 、外。 f. 外。 I BLOCK DIAGRAM ABCDE 1 2 3 4 5 6 7 6 YPC-1 VOLUME INPUT L 15 51 42 24 3 3

22、 R AUDIO OUTPUT AUDIO INPUT L1L2L3L4 R1R2R3R4R5 L5 R1 L1 R2 L2 RE BE RE BE RE BE RE BE RE BE RE RERERERERERE BE BE RERE BE BEBE REREBE REBE BE BEBEBEBEBE MAIN (2) P. C. B. MAIN (1) P. C. B.(Lead Type Device) (Lead Type Device) REBE I PRINTED CIRCUIT BOARD (Foil side) ABCDE 1 2 3 4 5 6 7 7 YPC-1 YPC-

23、1 MAIN (2) MAIN (1) I SCHEMATIC DIAGRAM ABCDE 1 2 3 4 5 6 7 8 YPC-1 54 54 50 50 53 39 55 12 55 11 33 54 55 58 36 51 35 61 VR1 SW1 41 40 5338 54 54 52 52 51 47 37 42 51 43 51 44 54 45 56 60 46 45 46 Use a 1.5 mm hexagon wrench to loosen the screws securing these knobs. 六角（1.5mm）使用固定 。 The double-face

24、d 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 . 11 含。 I EXPLODED VIEW 9 YPC-1 YPC-1 I MECHANICAL PARTS New Parts 新規部品 （#部品、 基板含） Schm Ref.PART NO.DescriptionRemarksMarkets部品名Rank *SW1WC278300ROTARY SWITCH2R5-A *VR1WB854100ROTARY PO

25、TENTIOMETERA10K RK50112A0連 *11WB855100PIN JACKRE *12WB855200PIN JACKWH *33WB915700BOTTOM COVER *35WC235700SUPPORT/WIRE *36WC527200SHEET/INS絶縁 *37WC342600FRONT PANEL *38WC342700SIDE PANEL L *39WC342800SIDE PANEL R *40WB916700TOP PANEL *41WB917000REAR PANEL *42WB917400KNOB/D31with 2 screwsBL付 *43WB917

26、500KNOB/D22with 2 screwsBL付 *44WB917700ESCUTCHEON/VOLBL 45WB837500LEG 46WB837600LEG/PAD 47V6004800EMBLEMBL 50WC187400WASHER 3.9-9 51EP600190BIND HEAD B-TIGHT SCREW3x8 MFZN2BL01 52VN413300BIND HEAD BONDING B-T. SCREW3x8 MFZN2BL01 53V6012200FLAT FILLISTER HEAD SCREW4x12-10 MFC2BL平 54EG330360BIND HEAD SCREW3x6 MFZN2BL小01 55VZ537900BIND HEAD BONDING B-T. SCREW3x8 MFC2 *56V6952700SCREW TAPPING #B3x6-8 MFZN2BL *58WB936600SCREW CUP 60EP600140BIND HEAD B-TIGHT SCREW3x10 MFZN2BL 61VB659000BIND HEAD SCREW3x8 MFZN2BL小 YPC-1