Yamaha-AS201-int-sm(1) 维修电路原理图.pdf

P.O.Box 1, Hamamatsu, Japan101 2 9 4SERVICE MANUALINTEGRATED AMPLIFIER13.12A-S201Copyright (c) Yamaha Corporation All rights reserved.This manual is copyrighted by Yamaha and may not be copied orredistributed either in print or electronically without permission.IMPORTANT NOTICEThis 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 specifi cally 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, 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 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 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 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 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. CONTENTSTO SERVICE PERSONNEL .2FRONT PANEL .3REAR PANELS .35REMOTE CONTROL PANEL .6SPECIFICATIONS .67INTERNAL VIEW .8SERVICE PRECAUTIONS .8DISASSEMBLY PROCEDURES .911UPDATING FIRMWARE .1217SELF-DIAGNOSTIC FUNCTION .1827DISPLAY DATA .28IC DATA .2931BLOCK DIAGRAM .32WIRING DIAGRAM .33PRINTED CIRCUIT BOARDS .3439PIN CONNECTION DIAGRAMS .40SCHEMATIC DIAGRAM .41REPLACEMENT PARTS LIST .4349REMOTE CONTROL .50ADVANCED SETUP .51A-S201RadioFans.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 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. Critical Components InformationComponents 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 exposed 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 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 (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 solderWALLOUTLETEQUIPMENTUNDER TESTAC LEAKAGETESTER OREQUIVALENTINSULATINGTABLEFor U model“CAUTION”“F1: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 8A, 125V FUSE.”For C modelCAUTIONF1: REPLACE WITH SAME TYPE 8A, 125V FUSE.ATTENTIONF1: UTILISER UN FUSIBLE DE RECHANGE DE MME TYPE DE 8A, 125V.2A-S201A-S201RadioFans.CN 收音机爱 好者资料库 FRONT PANELT modelR model REAR PANELS3A-S201A-S201B, G modelsK modelA model4A-S201A-S201L model5A-S201A-S201 REMOTE CONTROL PANELRAS2 Audio SectionMinimum RMS Output Power (Power Amp. Section)(40 Hz to 20 kHz, 0.2 % THD, 8 ohms / L/R drive)R, K, A, B, G models .100 W + 100 WT, L models .85 W + 85 WDynamic Power Per Channel (IHF) R, K, A, B, G models 8 / 6 / 4 / 2 ohms .125 / 150 / 165 / 180 WMaximum Power Per Channel (1 kHz, 0.7 % THD, 4 ohms) B, G models .115 WMaximum Effective Output Power (JEITA) (1 kHz, 10 % THD, 8 ohms) R, T, L modelsR model .140 WT, L models .125 WInput Sensitivity/Input Impedance (1 kHz, 100 W/8 ohms)PHONO (MM) . 10.0 mV / 47 k-ohmsCD etc. . 500 mV / 47 k-ohmsOutput Level/Output Impedance REC OUT . 500 mV / 2.2 k-ohmsHeadphone Jack Rated Output/Output Impedance(1 kHz, 500 mV, 8 ohms load / CD etc. input) . 470 mV / 470 ohmsFrequency Response (CD etc.)20 Hz to 20 kHz . 0 0.5 dB10 Hz to 100 kHz . 0 3.0 dBRIAA Equalization Deviation PHONO (MM) . 0.5 dBTotal Harmonic Distortion (20 Hz to 20 kHz)PHONO (MM) to REC OUT (2 V) .0.025 % or lessCD etc. to SP OUT (50 W/8 ohms) .0.2 % or lessSignal to Noise Ratio (IHF-A Network)PHONO (MM)Input shorted 10 mV . 75 dB or moreCD etc. (PURE DIRECT on)Input shorted 500 mV . 100 dB or moreResidual Noise (IHF-A Network) .70 VTone Control CharacteristicsBassBoost/Cut (50 Hz) . 10 dBTurnover frequency .170 HzTrebleBoost/Cut (20 kHz) . 10 dBTurnover frequency .3.0 kHz SPECIFICATIONS6A-S201A-S201Unit: mm (inch) GeneralPower SupplyR model .AC 110120/220240 V, 50/60 HzT model .AC 220 V, 50 HzK model .AC 220 V, 60 HzA model .AC 240 V, 50 HzB, G models .AC 230 V, 50 HzL model . AC 220240 V, 50/60 HzPower ConsumptionR, K, A, B, G models .175 WT, L models .140 WStandby Power Consumption T, K, A, B, G, L models .0.5 W or lessDimensions (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.)FinishR, T, K, A, B, G, L models . Black colorR, T, K, A, B, G, L models .Silver colorAccessoriesRemote control .x 1Battery (LR6, AA, UM-3) .x 2* Specifications are subject to change without notice.R .General modelT.Chinese modelK .Korean modelA .Australian modelB .British modelG .European modelL.Singapore model DIMENSIONSFront view21(7/8)435 (17-1/8)141 (5-1/2)120 (4-3/4)Top view20.5(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) 60335 (13-1/4)50(2)7A-S201A-S201 INTERNAL VIEW SERVICE PRECAUTIONSSafety measures Some internal parts in this product contain high voltages and are dangerous.Be sure to take safety measures during servicing, such 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 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 TRANSFORMERMAIN (6) P.C.B. MAIN (3) P.C.B. MAIN (2) P.C.B. MAIN (4) P.C.B. Top viewFront view4879536123456789218A-S201A-S201(Remove parts in the order as numbered.)Disconnect the power cable from the AC outlet.1. Removal of Top Covera. Remove screw (), 4 screws () and 6 screws (). (Fig. 1)b. Remove the top cover. (Fig. 1)2. Removal of Front Panel Unita. 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 PROCEDURESFront panel unitTop coverCB102CB502CB204MAIN (2) P.C.B.MAIN (1) P.C.B.MAIN (6) P.C.B.HookHook 9A-S201A-S201Fig. 3Fig. 23. Removal of AMP Unita. Remove 12 screws (). (Fig. 3)b. Remove 4 screws () and screw (). (Fig. 2)c. Remove CB4, CB7 and CB103. (Fig. 2)d. Remove the AMP unit. (Fig. 2)AMP unitCB4CB7CB103MAIN (1) P.C.B.Rear view10A-S201A-S201Fig. 4When 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 (connectors) that have been disconnected. When connecting the flexible flat cable, be careful with polarity.Rear panelChassisHeatsinkMAIN (1) P.C.B.Ground leadGround lead11A-S201A-S201When the following parts are replaced, the firmware must be updated to the latest version.MAIN P.C.B.Microprocessor: IC203 on FUNCTION (1) P.C.B. Confirmation of firmware version and checksumBefore 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 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 ICStart up 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 downloader 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-US232R-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 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.12A-S201A-S201USB portUSB cablePCThis unitRS-232C conversion adaptorFlexible flat cable (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 procedure1. Connect the power cable of this unit to the AC outlet.The power to this unit is supplied and the microprocessor is in the writing mode.2. Start up RFP.exe.The screen appears as shown below. (Fig. 2)3. Select the Basic mode and click Next. (Fig. 2)Fig. 2Select Basic mode13A-S201A-S2014. Select the type of the microprocessor and make the workspace. (Fig. 3) Microcontroller: RL78 Using Target Microcontroller: RL78/G13, R5F100JE Workspace Name: Any name Project Name: Any name Folder: Any place* Click Browse and specify the place where the workspace is made. (Fig.3)5. Click Next. (Fig. 3)Fig. 3RL78RL78/G13, R5F100JEWorkspace NameProject NameFolder14A-S201A-S2016. Select COMx with the Tool and click Next. (Fig. 4)* Do not proceed to other settings until clicking Next is completed. (Fig. 4)7. Make the port (COMx) setting. (Fig. 5)a. Access the device manager. (Fig. 5)* To access the device manager, click Start, Control panel, System, Hardware and Device manager in this order.b. Right click the communication port (COMx) of the port (COM and LPT) to open the property. (Fig. 5)* COMx: Enter the port number of the PC to which the USB to serial converter is connected in place of “x”.c. Using the port setting function, set the Bit/second to “115200”. (Fig. 5)8. Click OK. (Fig. 5)Fig. 4Fig. 5Tool: COMx11520015A-S201A-S2019. Click Browse. and select the firmware name. (Fig. 6)10. Click Start to start writing. (Fig. 6)Fig. 6Writing being executed.16A-S201A-S20113. Disconnect the power cable of this unit from the AC outlet.14. Remove the RS-232C conversion adaptor and flexible flat cable from the writing port (CB201 on MAIN (1) P.C.B.) of this unit.15. Connect the power cable of this unit to the AC outlet, start up the self-diagnostic function and check that the firmware version and checksum are the same as written ones. (For details, refer to “Confirmation of firmware version and checksum”)11. When writing of the firmware is completed, the screen appears as shown below. (Fig. 7)12. Click X to end RFP.exe. (Fig. 7)Fig. 717A-S201A-S201This unit has self-diagnostic functions that are intended for inspection, measurement and location of faulty point.There are 6 main menu items, each of which has sub-menu items.Listed in the table below are main menu items and sub-menu items.Note: Some of the menu items listed below may not apply to the models covered in this service manual. SELF-DIAGNOSTIC FUNCTIONNo.Main menuNo.Sub-menu1FIRMWARE VERSION/CHECK SUM1FIRMWARE VERSION2FIRMWARE CHECKSUM3MODEL/DESTINATION2DISPLAY CHECK1VFD CHECK2ALL SEGMENT OFF3ALL SEGMENT ON3FACTORY RESET1PRESET INHIBIT2PRESET RESERVE4AD DATA CHECK1PS2DC3TA4DESTINATION5KEY5PROTECTION HISTORY1HISTORY 12HISTORY 23HISTORY 34HISTORY 46POWER OFF FACTOR HISTORY1LAST2HISTORY 13HISTORY 24HISTORY 35HISTORY 418A-S201A-S201While pressing these keys, turn on the power.“ ” (Power) indicator“ ” (Power) keyCAUTION!Using this unit with the protection function disabled may cause further damage to this unit. Use special care for this point when using this mode. Starting Self-Diagnostic Function in the protection cancel modeIf the protection function works and causes hindrance to troubleshooting, cancel the protection function by the procedure below, and it will be possible to enter the self-diagnostic function mode. (The protection functions other than the excess current detect function will be disabled.)While pressing the “BASS +” and “SPEAKERS A” keys, press the “ ” (Power) key to turn on the power and keep pressing those 2 keys and “ ” (Power) key for 3 seconds or longer.The self-diagnostic function mode is activated with the protection functions disabled.In this mode, the “SLEEP” segment of the FL display flashes to indicate that the mode is self-diagnostic function mode with the protection functions disabled. Starting Self-Diagnostic Functi