Yamaha-AS701-int-sm(1) 维修电路原理图.pdf

SERVICE MANUALINTEGRATED AMPLIFIERA-S701 CONTENTSTO SERVICE PERSONNEL .2IMPEDANCE SELECTOR .3FRONT PANELS .3REAR PANELS .45REMOTE CONTROL PANEL .6SPECIFICATIONS .67INTERNAL VIEW .8SERVICE PRECAUTIONS .8DISASSEMBLY PROCEDURES .911UPDATING FIRMWARE . 1214SELF-DIAGNOSTIC FUNCTION . 1525POWER AMPLIFIER ADJUSTMENT .2627IC DATA .2830PIN CONNECTION DIAGRAMS .31BLOCK DIAGRAM .33WIRING DIAGRAMS .34PRINTED CIRCUIT BOARDS .3551SCHEMATIC DIAGRAMS .5359REPLACEMENT PARTS LIST .6175REMOTE CONTROL . 761013 1414.12IPA-S701RadioFans.CN 收音机爱 好者资料库2A-S701A-S701 TO SERVICE PERSONNEL1. Critical 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 exposed conductive surfaces are properly insulated from supply circuits. Meterimpedanceshouldbeequivalentto1500ohmsshuntedby0.15F.WALLOUTLETEQUIPMENTUNDER TESTAC LEAKAGETESTER OREQUIVALENTINSULATINGTABLE Leakagecurrentmustnotexceed0.5mA. BesuretotestforleakagewiththeACpluginbothpolarities.For U model“CAUTION”“F1:FORCONTINUEDPROTECTIONAGAINSTRISKOFFIRE,REPLACEONLYWITHSAMETYPE8A,125VFUSE.”For C modelCAUTIONF1:REPLACEWITHSAMETYPE8A,125VFUSE.ATTENTIONF1:UTILISERUNFUSIBLEDERECHANGEDEMMETYPEDE8A,125V.WARNING: CHEMICAL CONTENT NOTICE!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.About lead free solderAll 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 30 C to 40 C (50 F to 70 F) higher than that of the lead solder, be sure to use a soldering iron suitable to each solder.RadioFans.CN 收音机爱 好者资料库3A-S701A-S701 IMPEDANCE SELECTORIMPEDANCE SELECTORWARNING:Do not change the setting of the IMPEDANCE SELECTOR switch when the unit power is switched on, as doing so may damage the unit. FRONT PANELA-S7014A-S701A-S701 REAR PANELSA-S701 (U model)A-S701 (R model)A-S701 (A model)5A-S701A-S701A-S701 (B, G models)A-S701 (L model)6A-S701A-S701 SPECIFICATIONS Audio SectionMinimum RMS Output Power (Power Amp. Section) (20 Hz to 20 kHz)8 ohms, 0.019 % THD .100 W + 100 W6 ohms, 0.038 % THD .120 W + 120 WDynamic Power Per Channel (IHF)8 / 6 / 4 / 2 ohms .140 / 170 / 220 / 290 WMAX Power Per Channel (1 kHz) B,Gmodels0.7 % THD, 4 ohms .160 WIEC Power (1 kHz) B,Gmodels0.019 % THD, 8 ohms .115WPower Band Width0.04%THD,50W,8ohms . 10Hzto50kHzDamping Factor (SPEAKER-A)1 kHz, 8 ohms .240 or moreMaximum Effective Output Power (JEITA)(1 kHz, 10 % THD)R,Lmodels(8ohms) .145WhR model (6 ohms) .170 WhInput Sensitivity/Input ImpedancePHONO(MM) .3.0mV/47k-ohmsCD, etc. .200mV/47k-ohmsMaximum Input Signal (1kHz)PHONO (MM) (0.03 % THD) .45 mV or moreCD, etc. (0.5 % THD) .2.2 V or moreOutput Level/Output ImpedanceREC OUT . 200 mV / 1.0 k-ohms or lessSubwoofer OUT .3.5 V / 1.2 k-ohms(Cut off Frequency: 100 Hz)Headphone Jack Rated Output/ImpedanceCD, etc. (Input, 1 kHz, 200 mV, 8 ohms) .470 mV / 470 ohmsFrequency ResponseCD, etc. (20 Hz to 20 kHz) .0 0.5 dBCD, etc. Pure DIRECT ON (10 Hz to 100 kHz) .0 1.0 dBRIAA Equalization DeviationPHONO (MM) . 0.5 dBTotal Harmonic Distortion (20Hzto20kHz)PHONO (MM) to REC OUT (2.5 V) .0.03 % or lessCD,etc.toSPOUT(50W,8ohms) .0.019 % or lessSignal to Noise Ratio (IHF-ANetwork)PHONO (MM) (5 mV Input shorted) .82 dB or moreCD, etc. (Pure DIRECT ON) (200 mV input shorted) .99dBormoreCD DIRECT ON .104 dB or moreResidual Noise(IHF-ANetwork) . 40 V REMOTE CONTROL PANELRAS147A-S701A-S701 DIMENSIONS Channel SeparationCD, etc. (Input 5.1 k-ohms shorted)1kHz .65dBormore10 kHz .50dBormoreTone Control CharacteristicsBASSBoost/Cut(20Hz).10dBTurnover frequency .400HzTREBLEBoost/Cut(20kHz) .10dBTurnover frequency .3.5kHzContinuous Loudness ControlAttenuation (1 kHz) .-30 dBSupported Digital Audio Format (COAXIAL / OPTICAL) /PCM (2-ch) .192 / 176.4 / 96 / 88.2 / 48 / 44.1 kHzPCM Word Depth .16 / 24 bitGain Tracking Error(0 to -99 dB) .0.5 dB or less GeneralPower SupplyU model .AC 120 V, 60 HzR model . AC 110120/220240 V, 50/60 HzA model .AC 240 V, 50 HzB, G models .AC 230 V, 50 HzL model .AC 220240 V, 50/60 HzPower ConsumptionU, R, A, B, G models .270 WL model .230 WStandby Power Consumption .0.5 WMaximum Power Consumption Rmodel1 kHz, 6 ohms, 10 % THD .580WDimensions (W x H x D) .435 x 151 x 387 mm (17-1/8 x 6 x 15-1/4)Weight .11.2 kg (24.7 lbs.)Finish .Black color / Silver colorAccessoriesRemote control .x 1Battery(R6,AA,UM-3) .x 2Power cable (2 m) .x 1* Specifications are subject to change without notice.U .U.S.A. and Canadian modelsR . General modelT.Chinese modelK .Korean modelA .Australian modelB .British modelG . European modelL. Singapore modelJ .Japanese modelTop viewUnit: mm (inch)単位 ： mm（）335 (13-1/4)50(2)20.5(3/4)25.5(1)387 (15-1/4)341 (13-3/8)55(2-1/8)46(1-3/4)240 (9-1/2) 60Front view435 (17-1/8)151 (5-7/8)130 (5-1/8)21(7/8)8A-S701A-S701 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.C134, C135 on MAIN (1) P.C.B.For details, refer to “PRINTED CIRCUIT BOARDS: MAIN (1) P.C.B.”.a MAIN (8)b MAIN (2)c FUNCTION (4)d MAIN (3) (R model)e DIGITALf MAIN (6)g FUNCTION (1)h FUNCTION (2)i FUNCTION (3)j MAIN (5)k MAIN (1)l MAIN (4)m POWER TRANSFORMERn OPERATION (7)o OPERATION (4)p OPERATION (3)q OPERATION (1)r OPERATION (2)s OPERATION (6)t OPERATION (5)Top viewFront view13892nopqr4567stkjlm9A-S701A-S701 DISASSEMBLY PROCEDURES(Remove parts in the order as numbered.)Disconnect the power cable from the AC outlet.1. Removal of Top Covera. Remove 4 screws (1), 4 screws (2) and screw (3). (Fig. 1)b. Remove the top cover. (Fig. 1)2. Removal of Front Panel Unita. Remove screw ( ), screw ( ) and then remove the top frame.(Fig. 1)b. Pull out the knobs and cap. (Fig. 1)c. Remove 7 screws ( ). (Fig. 1)d. Remove the front panel unit. (Fig. 1)Fig. 1Front panel unit Knob VOLUMEKnob INPUTKnob BASS/TREBLE/BAL./LOUD.Knob SPEAKERS OFF/A/B/A+BCap POWERTop frameTop cover10A-S701A-S701Sub-chassis unit HookCB706CB101CB105HookCB853CB2CB21FUNCTION (1) P.C.B.FUNCTION (2) P.C.B.FUNCTION (3) P.C.B.CB506CB505DIGITAL P.C.B.CB508CB304CB301CB3033. Removal of Sub-chassis Unita. Remove 2 screws ( ). (Fig. 2)b. Remove CB505, CB508, CB706 and CB853. (Fig. 2)c. Release 2 hooks and then remove the sub-chassis unit. (Fig. 2)4. Removal of DIGITAL P.C.B.a. Remove 3 screws (9). (Fig. 3)b. Remove 3 screws (j). (Fig. 2)c. Remove CB21, CB301, CB303 and CB304 and then remove the DIGITAL P.C.B. (Fig. 2)5. Removal of DIGITAL P.C.B.a. Remove 7 screws (k). (Fig. 3)b. Remove screw (l) and screw (m). (Fig. 2)c. Remove CB2, CB101, CB105 and CB404 and then remove the FUNCTION (1)(3) P.C.B. (Fig. 2)Fig. 2Fig. 311A-S701A-S701When checking the P.C.B.s: Put the rubber sheet and the cloth over this unit, Then place the sub-chassis unit on the cloth and check it. (Fig. 4) Connect the ground point of the sub-chassis unit 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.Ground leadSub-chassis unitRubber sheet and clothFig. 412A-S701A-S701 UPDATING FIRMWAREWhen the following parts are replaced, the firmware must be updated to the latest version.FUNCTION P.C.B. Confirmation of firmware versionBefore and after updating the firmware, check the firmware version by using the self-diagnostic function menu.Start up the self-diagnostic function, have the firmware version indicated, 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. Factory presetAfter updating the firmware, revert to factory presets with the following procedure to properly store the setup information.Start up the self-diagnostic function.(For details, refer to “SELF-DIAGNOSTIC FUNCTION”)Set the “SPEAKERS” selector to the “A” position, press the “z” (power) switch to turn off the power once and press the “z” (power) switch to turn on the power again.Then the factory preset is performed. Required Tools CD, DVD or BD player (with DIGITAL OUTPUT (OPTICAL or COAXIAL) jack) Optical cable (when OPTICAL jack is used) Digital audio pin cable (when COAXIAL jack is used) Firmware CD Download the latest firmware from the specified download source and create the firmware CD.* The following models can be used as a tool to update the firmware.CD player: CD-C600/CD-S1000/CD-S2000/CD-S300/CD-S700/CDX-496/CDX-596/CDX-890DVD player: DV-C6760/DVD-840/DVD-C740/DVD-C750/DVD-C940/DVD-C950/DVD-CX1/DVD-S1200/DVD-S1800/DVD-S2300(MKII)/DVD-S2700/DVD-S30/DVD-S510/DVD-S520/DVD-S530/DVD-S540/DVD-S550/DVD-S657/DVD-S700/DVD-S80/DVD-S840BD (Blu-ray) player: BD-940/BD-S1065/BD-S1900/BD-S2900/BD-S671Others: CDR-D651/CDR-HD10013A-S701A-S701 ConnectionUse the optical cable (when OPTICAL jack is used) or Digital audio pin cable (when COAXIAL jack is used) to connect the CD, DVD or BD player and the unit. Operation Procedures1. Set this unit to the firmware update mode.a. Connect the power cable of this unit to the AC outlet. (Fig.1)b. Set the “z” (power) switch to the OFF position. (Fig.1)c. Fully turn the “BALANCE” knob to the right (R). (Fig.1)d. Fully turn the “VOLUME” knob to the left (minimum). (Fig.1)e While pressing the “PURE DIRECT” switch, press the “z” (power) switch to turn on this unit. (Fig.1) The unit is set to the firmware update mode.When this unit is set to the firmware update mode, the power indicator flashes at a 1-second interval.When this unit is set to the firmware update mode, the “LINE3” indicator light up. (Fig. 2)2. Play the firmware CD on the CD/DVD/BD player. Updating of the firmware starts automatically. (Fig. 3)Note: Ifthelightingpatternofthe“INPUT”indicatorsdoesnotchange10secondsormoreafterplaybackofthefirmware CD was started, try updating the firmware again, starting from the beginning of the procedure. Becarefulthatthepowercableisnotunpluggedandthepowervoltagedoesnotdropwhilethefirmwareisbeingupdated. Otherwise, firmware updating may fail and cannot be performed again.Updating startedUpdatingFig. 3PURE DIRECT switchVOLUME knobBALANCE knobPower indicator (Power) switchOFFON/STANDBYFig. 1Fig. 2Power cableAC outlet14A-S701A-S7013. After the firmware has been updated, all “INPUT” indicators light up. (Fig. 4)After checking that all “INPUT” indicators light up, press the “z” (power) switch to turn it off, then on again.Note:If the power indicator flashes at a 0.5-second interval or all “INPUT” indicators do not light up after updating the firmware, try updating the firmware again, starting from the beginning of the procedure. (Fig. 5) These indicate that the data was not correctly written to the microprocessor. If the same result is obtained after trying to update the firmware again, the microprocessor may be damaged.4. Press the “z” (power) switch to turn off the power.5. Eject the firmware CD from the CD/DVD/BD player.6. Start up the self-diagnostic function and check that the firmware version is the same as written one.(For details, refer to “Indication of firmware version”.)7. Revert to factory presets.(For details, refer to “Factory Preset”.)Fig. 5Update is completedFig. 415A-S701A-S701 SELF-DIAGNOSTIC FUNCTIONThis unit has self-diagnostic functions that provides the following functions. Indication of firmware version Indication of “AUTO POWER STANDBY” switch status Indication and checking of protection information Factory preset Starting Self-Diagnostic Function1. Press the “z” (power) switch to turn off this unit. (Fig.1)2. Connect the power cable of this unit to the AC outlet. (Fig.1)3. Set the “SPEAKERS” knob to the “OFF” position. (Fig.1)Note: Since factory preset is reserved by turning off this unit when the “SPEAKERS” knob is set to the “A” position, set the “SPEAKERS” knob to the “OFF” position before starting the self-diagnostic function mode.4. Set the “BASS”, “TREBLE” and “BALANCE” knobs to the top positions. (Fig.1)Note: Be sure to set the “BASS”, “TREBLE” and “BALANCE” knobs to the top positions. These positions are stored when the self-diagnostic function mode is started, and software corrections are made to the top position for each selector. In addition, the self diagnostic function mode cannot be started if the top positions for the knobs are off by more than 5% of the 2.5 V input voltage.5. Set the “LOUDNESS” knob to the “FLAT” position. (Fig.1)6. Press the “z” (power) key to turn on this unit. (Fig.1)7. Press the “z” (AMP) key on the remote control to set this unit to standby. (Fig.2)8. Repeat pressing the “PURE DIRECT” key 6 times within 15 seconds. (Fig.1)9. Press the “z” (AMP) key on the remote control to turn on this unit. (Fig.2)This unit starts the self-diagnostic function mode.Keys of this unitKey on Remote control“PURE DIRECT” key“BASS” , “TREBLE” , “BALANCE” knobs“LOUDNESS” knob“ ” (Power) switch“SPEAKERS” knob“ ” (AMP) keyPower cableAC outletFig. 1Fig. 216A-S701A-S701 Display provided when Self-Diagnostic Function started Details of Indication Indication of firmware versionThe firmware version of the microprocessor (IC502 of the FUNCTION P.C.B.) is indicated in the binary code (BCD) using the “COAXIAL”, “CD”, “TUNER” and “PHONO” indicators. (Fig.4) Indication of AUTO POWER STANDBY switch statusThe status (ON/OFF) of the “AUTO POWER STANDBY” switch located on the rear panel is indicated using the “LINE 2 INPUT” indicator. (Fig. 5)Light up:“AUTO POWER STANDBY” switch is “ON”Off: “AUTO POWER STANDBY” switch is “OFF”Fig. 5 Indication of firmware version Indication of auto power standby status Indication of protection informationPower indicatorINPUT indicator