Yamaha-AS201-int-sm 电路图 维修手册.pdf

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1、P.O.Box 1, Hamamatsu, Japan 101 2 9 4 SERVICE MANUAL INTEGRATED AMPLIFIER 13.12 A-S201 Copyright (c) Yamaha Corporation All rights reserved. This manual is copyrighted by Yamaha and may not be copied or redistributed either in print or electronically without permission. IMPORTANT NOTICE This manual

2、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 specifi cally Yamaha Products, are already known and understood by the users, and have therefore not been restated. WARNING:

3、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 specifi ed. For these reasons, we advise all Yamaha product owners that any service required should be

4、performed by an authorized Yamaha Retailer or the appointed service representative. IMPORTANT: The presentation or sale of this manual to any individual or fi rm does not constitute authorization, certifi cation or recognition of any applicable technical capabilities, or establish a principle-agent

5、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. Modifi cations are, therefore, inevitable and specifi cations

6、 are subject to change without notice or obligation to retrofi t. 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 grounding yourse

7、lf 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. CONTENTS TO SERVICE PERSONNEL .2 FRONT PANEL .3 REAR PANELS .35 REMOTE CONTROL PANEL .6 SPECIFI

8、CATIONS .67 INTERNAL VIEW .8 SERVICE PRECAUTIONS .8 DISASSEMBLY PROCEDURES .911 UPDATING FIRMWARE .1217 SELF-DIAGNOSTIC FUNCTION .1827 DISPLAY DATA .28 IC DATA .2931 BLOCK DIAGRAM .32 WIRING DIAGRAM .33 PRINTED CIRCUIT BOARDS .3439 PIN CONNECTION DIAGRAMS .40 SCHEMATIC DIAGRAM .41 REPLACEMENT PARTS

9、LIST .4349 REMOTE CONTROL .50 ADVANCED SETUP .51 A-S201 RadioFans.CN 收音机爱 好者资料库 This product contains chemicals known to the State of California to cause cancer, or birth defects or other reproductive harm. DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON

10、 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 hands before handling food. 1. Crit

11、ical 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 Only) When service has been completed, it is imperative to verify that all expos

12、ed conductive surfaces are properly insulated from supply circuits. Meter impedance should be equivalent to 1500 ohms shunted by 0.15 F. TO SERVICE PERSONNEL Leakage current must not exceed 0.5mA. Be sure to test for leakage with the AC plug in both polarities. WARNING: CHEMICAL CONTENT NOTICE! All

13、of the P.C.B.s installed in this unit and solder joints are soldered using the lead free solder. 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

14、 (tin + zinc + bismuth) Caution: 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. About lead free solder WALL OUTLET EQUIPMENT UNDER TEST AC LEAKAGE TESTER OR EQUIVA

15、LENT INSULATING TABLE For U model “CAUTION” “F1: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 8A, 125V FUSE.” For C model CAUTION F1: REPLACE WITH SAME TYPE 8A, 125V FUSE. ATTENTION F1: UTILISER UN FUSIBLE DE RECHANGE DE MME TYPE DE 8A, 125V. 2 A-S201 A-S201 RadioFans.C

16、N 收音机爱 好者资料库 FRONT PANEL T model R model REAR PANELS 3 A-S201 A-S201 RadioFans.CN 收音机爱 好者资料库 B, G models K model A model 4 A-S201 A-S201 L model 5 A-S201 A-S201 REMOTE CONTROL PANEL RAS2 Audio Section Minimum RMS Output Power (Power Amp. Section) (40 Hz to 20 kHz, 0.2 % THD, 8 ohms / L/R drive) R, K

17、, A, B, G models .100 W + 100 W T, L models .85 W + 85 W Dynamic Power Per Channel (IHF) R, K, A, B, G models 8 / 6 / 4 / 2 ohms .125 / 150 / 165 / 180 W Maximum Power Per Channel (1 kHz, 0.7 % THD, 4 ohms) B, G models .115 W Maximum Effective Output Power (JEITA) (1 kHz, 10 % THD, 8 ohms) R, T, L m

18、odels R model .140 W T, L models .125 W Input Sensitivity/Input Impedance (1 kHz, 100 W/8 ohms) PHONO (MM) . 10.0 mV / 47 k-ohms CD etc. . 500 mV / 47 k-ohms Output Level/Output Impedance REC OUT . 500 mV / 2.2 k-ohms Headphone Jack Rated Output/Output Impedance (1 kHz, 500 mV, 8 ohms load / CD etc.

19、 input) . 470 mV / 470 ohms Frequency Response (CD etc.) 20 Hz to 20 kHz . 0 0.5 dB 10 Hz to 100 kHz . 0 3.0 dB RIAA Equalization Deviation PHONO (MM) . 0.5 dB Total Harmonic Distortion (20 Hz to 20 kHz) PHONO (MM) to REC OUT (2 V) .0.025 % or less CD etc. to SP OUT (50 W/8 ohms) .0.2 % or less Sign

20、al to Noise Ratio (IHF-A Network) PHONO (MM) Input shorted 10 mV . 75 dB or more CD etc. (PURE DIRECT on) Input shorted 500 mV . 100 dB or more Residual Noise (IHF-A Network) .70 V Tone Control Characteristics Bass Boost/Cut (50 Hz) . 10 dB Turnover frequency .170 Hz Treble Boost/Cut (20 kHz) . 10 d

21、B Turnover frequency .3.0 kHz SPECIFICATIONS 6 A-S201 A-S201 Unit: mm (inch) General Power Supply R model .AC 110120/220240 V, 50/60 Hz T model .AC 220 V, 50 Hz K model .AC 220 V, 60 Hz A model .AC 240 V, 50 Hz B, G models .AC 230 V, 50 Hz L model . AC 220240 V, 50/60 Hz Power Consumption R, K, A, B

22、, G models .175 W T, L models .140 W Standby Power Consumption T, K, A, B, G, L models .0.5 W or less Dimensions (W x H x D) .435 x 141 x 333 mm (17-1/8 x 5-1/2 x 13-1/8) Weight .6.7 kg (14.8 lbs.) Finish R, T, K, A, B, G, L models . Black color R, T, K, A, B, G, L models .Silver color Accessories R

23、emote control .x 1 Battery (LR6, AA, UM-3) .x 2 * Specifications are subject to change without notice. R .General model T.Chinese model K .Korean model A .Australian model B .British model G .European model L.Singapore model DIMENSIONS Front view 21 (7/8) 435 (17-1/8) 141 (5-1/2) 120 (4-3/4) Top vie

24、w 20.5 (3/4) 22.5 (7/8) 333 (13-1/8) 290 (11-3/8) 55 (2-1/8) 45 (1-3/4) 190 (7-1/2) 60 335 (13-1/4)50 (2) 7 A-S201 A-S201 INTERNAL VIEW SERVICE PRECAUTIONS Safety measures Some internal parts in this product contain high voltages and are dangerous. Be sure to take safety measures during servicing, s

25、uch as wearing insulating gloves. Note that the capacitors indicated below are dangerous even after the power is turned off because an electric charge remains and a high voltage continues to exist there. Before starting any repair work, connect a discharging resistor (5 k-ohms/10 W) to the terminals

26、 of each capacitor indicated below to discharge electricity. The time required for discharging is about 30 seconds per each. C140, C143, C149 and C150 on MAIN (1) P.C.B. For details, refer to “PRINTED CIRCUIT BOARDS”. MAIN (5) P.C.B. (R model) MAIN (1) P.C.B. MAIN (8) P.C.B. MAIN (7) P.C.B. POWER TR

27、ANSFORMER MAIN (6) P.C.B. MAIN (3) P.C.B. MAIN (2) P.C.B. MAIN (4) P.C.B. Top view Front view 4 879 53 6 1 2 3 4 5 6 7 8 9 21 8 A-S201 A-S201 (Remove parts in the order as numbered.) Disconnect the power cable from the AC outlet. 1. Removal of Top Cover a. Remove screw (), 4 screws () and 6 screws (

28、). (Fig. 1) b. Remove the top cover. (Fig. 1) 2. Removal of Front Panel Unit a. Remove screw () and 6 screws (). (Fig. 1) b. Remove screw () and then remove W501. (Fig. 1) c. Remove CB102, CB204 and CB502. (Fig. 1) d. Release 2 hooks and then remove the front panel unit. (Fig. 1) Fig. 1 DISASSEMBLY

29、PROCEDURES Front panel unit Top cover CB102 CB502 CB204 MAIN (2) P.C.B. MAIN (1) P.C.B. MAIN (6) P.C.B. Hook Hook 9 A-S201 A-S201 Fig. 3 Fig. 2 3. Removal of AMP Unit a. Remove 12 screws (). (Fig. 3) b. Remove 4 screws () and screw (). (Fig. 2) c. Remove CB4, CB7 and CB103. (Fig. 2) d. Remove the AM

30、P unit. (Fig. 2) AMP unit CB4 CB7 CB103 MAIN (1) P.C.B. Rear view 10 A-S201 A-S201 Fig. 4 When checking the MAIN (1) P.C.B.: Place the P.C.B.s (with rear panel) upright. (Fig. 4) Connect the heatsink and rear panel to the chassis with a ground lead or the like. (Fig. 4) Reconnect all cables (connect

31、ors) that have been disconnected. When connecting the flexible flat cable, be careful with polarity. Rear panel Chassis Heatsink MAIN (1) P.C.B. Ground lead Ground lead 11 A-S201 A-S201 When the following parts are replaced, the firmware must be updated to the latest version. MAIN P.C.B. Microproces

32、sor: IC203 on FUNCTION (1) P.C.B. Confirmation of firmware version and checksum Before and after updating the firmware, check the firmware version and checksum by using the self-diagnostic function menu. Start up the self-diagnostic function and select “1. FIRMWARE VERSION/CHECK SUM” menu. Using the

33、 sub-menu, have the firmware version and checksum displayed, and note them down. (For details, refer to “SELF-DIAGNOSTIC FUNCTION”) * When the firmware version is different from written one after updating, perform the updating procedure again from the beginning. Initializing the back-up IC Start up

34、the self-diagnostic function and select “3. FACTORY PRESET” menu. (For details, refer to “SELF-DIAGNOSTIC FUNCTION”) Select “PRST RSRV”, press the “ ” (Power) key to turn off the power once and turn on the power again. Then the back- up IC is initialized. UPDATING FIRMWARE Required Tools Firmware do

35、wnloader program .RFP.exe Firmware . AS_201_xxx.mot RS-232C conversion adaptor (Part No.: ZK189200) Flexible flat cable (9 pin 150 mm pitch = 1.25, Part No.: ZD896000) USB to Serial converter (USB type-A to D-sub 9 pin) * Recommendation: BUFFALO (Part No.: BSUSRC0605BS) FTDI Ltd. (Part No.: DS-US232

36、R-10) Preparation and precautions Download the firmware downloader program and the latest firmware from the specified download source to the same folder of the PC. Prepare the above specified RS-232C cross cable. While writing the firmware, keep the other application software on the PC closed. It is

37、 also recommended to keep the software on the task tray closed as well. After updating the firmware, the back-up IC MUST be initialized by the following procedure to store the setting information properly. 12 A-S201 A-S201 USB port USB cable PC This unit RS-232C conversion adaptor Flexible flat cabl

38、e (9P) Writing port (CB201 on MAIN (1) P.C.B.) Connection * Disconnect the power cable of this unit from the AC outlet. Connect the writing port (CB201 on MAIN (1) P.C.B.) located on the rear panel of this unit to the USB port of the PC with USB to serial converter, RS-232C conversion adaptor and flexible flat cable as shown below. (Fig. 1) Fig. 1 Operation procedure 1. Connect the