Yamaha-AS701-int-sm 电路图 维修手册.pdf

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1、SERVICE MANUAL INTEGRATED AMPLIFIER A-S701 CONTENTS TO SERVICE PERSONNEL .2 IMPEDANCE SELECTOR .3 FRONT PANELS .3 REAR PANELS .45 REMOTE CONTROL PANEL .6 SPECIFICATIONS .67 INTERNAL VIEW .8 SERVICE PRECAUTIONS .8 DISASSEMBLY PROCEDURES .911 UPDATING FIRMWARE . 1214 SELF-DIAGNOSTIC FUNCTION . 1525 PO

2、WER AMPLIFIER ADJUSTMENT .2627 IC DATA .2830 PIN CONNECTION DIAGRAMS .31 BLOCK DIAGRAM .33 WIRING DIAGRAMS .34 PRINTED CIRCUIT BOARDS .3551 SCHEMATIC DIAGRAMS .5359 REPLACEMENT PARTS LIST .6175 REMOTE CONTROL . 76 1013 14 14.12IP A-S701 RadioFans.CN 收音机爱 好者资料库 2 A-S701 A-S701 TO SERVICE PERSONNEL 1.

3、 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

4、exposed conductive surfaces are properly insulated from supply circuits. Meterimpedanceshouldbeequivalentto1500ohmsshunted by0.15F. WALL OUTLET EQUIPMENT UNDER TEST AC LEAKAGE TESTER OR EQUIVALENT INSULATING TABLE Leakagecurrentmustnotexceed0.5mA. BesuretotestforleakagewiththeACpluginbothpolarities.

5、 For U model “CAUTION” “F1:FORCONTINUEDPROTECTIONAGAINSTRISKOFFIRE,REPLACEONLYWITHSAMETYPE8A, 125VFUSE.” For C model CAUTION F1:REPLACEWITHSAMETYPE8A,125VFUSE. ATTENTION F1:UTILISERUNFUSIBLEDERECHANGEDEMMETYPEDE8A,125V. WARNING: CHEMICAL CONTENT NOTICE! This product contains chemicals known to the S

6、tate 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

7、expose eyes to solder/fl ux 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 solder All of the P.C.B.s installed in this unit and solder joints are soldered using the lead free solder. Among so

8、me 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 t

9、o 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 3 A-S701 A-S701 IMPEDANCE SELECTOR IMPEDANCE SELECTOR WARNING: Do not change the setting of the IMPEDANCE SELECTOR switch when the unit power is switched on, as

10、 doing so may damage the unit. FRONT PANEL A-S701 RadioFans.CN 收音机爱 好者资料库 4 A-S701 A-S701 REAR PANELS A-S701 (U model) A-S701 (R model) A-S701 (A model) 5 A-S701 A-S701 A-S701 (B, G models) A-S701 (L model) 6 A-S701 A-S701 SPECIFICATIONS Audio Section Minimum RMS Output Power (Power Amp. Section) (2

11、0 Hz to 20 kHz) 8 ohms, 0.019 % THD .100 W + 100 W 6 ohms, 0.038 % THD .120 W + 120 W Dynamic Power Per Channel (IHF) 8 / 6 / 4 / 2 ohms .140 / 170 / 220 / 290 W MAX Power Per Channel (1 kHz) B,Gmodels 0.7 % THD, 4 ohms .160 W IEC Power (1 kHz) B,Gmodels 0.019 % THD, 8 ohms .115W Power Band Width 0.

12、04%THD,50W,8ohms . 10Hzto50kHz Damping Factor (SPEAKER-A) 1 kHz, 8 ohms .240 or more Maximum Effective Output Power (JEITA) (1 kHz, 10 % THD) R,Lmodels(8ohms) .145Wh R model (6 ohms) .170 Wh Input Sensitivity/Input Impedance PHONO(MM) .3.0mV/47k-ohms CD, etc. .200mV/47k-ohms Maximum Input Signal (1k

13、Hz) PHONO (MM) (0.03 % THD) .45 mV or more CD, etc. (0.5 % THD) .2.2 V or more Output Level/Output Impedance REC OUT . 200 mV / 1.0 k-ohms or less Subwoofer OUT .3.5 V / 1.2 k-ohms (Cut off Frequency: 100 Hz) Headphone Jack Rated Output/Impedance CD, etc. (Input, 1 kHz, 200 mV, 8 ohms) .470 mV / 470

14、 ohms Frequency Response CD, etc. (20 Hz to 20 kHz) .0 0.5 dB CD, etc. Pure DIRECT ON (10 Hz to 100 kHz) .0 1.0 dB RIAA Equalization Deviation PHONO (MM) . 0.5 dB Total Harmonic Distortion (20Hzto20kHz) PHONO (MM) to REC OUT (2.5 V) .0.03 % or less CD,etc.toSPOUT(50W,8ohms) .0.019 % or less Signal t

15、o Noise Ratio (IHF-ANetwork) PHONO (MM) (5 mV Input shorted) .82 dB or more CD, etc. (Pure DIRECT ON) (200 mV input shorted) .99dBormore CD DIRECT ON .104 dB or more Residual Noise(IHF-ANetwork) . 40 V REMOTE CONTROL PANEL RAS14 7 A-S701 A-S701 DIMENSIONS Channel Separation CD, etc. (Input 5.1 k-ohm

16、s shorted) 1kHz .65dBormore 10 kHz .50dBormore Tone Control Characteristics BASS Boost/Cut(20Hz).10dB Turnover frequency .400Hz TREBLE Boost/Cut(20kHz) .10dB Turnover frequency .3.5kHz Continuous Loudness Control Attenuation (1 kHz) .-30 dB Supported Digital Audio Format (COAXIAL / OPTICAL) / PCM (2

17、-ch) .192 / 176.4 / 96 / 88.2 / 48 / 44.1 kHz PCM Word Depth .16 / 24 bit Gain Tracking Error (0 to -99 dB) .0.5 dB or less General Power Supply U model .AC 120 V, 60 Hz R model . AC 110120/220240 V, 50/60 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

18、Consumption U, R, A, B, G models .270 W L model .230 W Standby Power Consumption .0.5 W Maximum Power Consumption Rmodel 1 kHz, 6 ohms, 10 % THD .580W Dimensions (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 color Accessories Remote co

19、ntrol .x 1 Battery(R6,AA,UM-3) .x 2 Power cable (2 m) .x 1 * Specifi cations are subject to change without notice. U .U.S.A. and Canadian models R . General model T.Chinese model K .Korean model A .Australian model B .British model G . European model L. Singapore model J .Japanese model Top view Uni

20、t: 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) 60 Front view 435 (17-1/8) 151 (5-7/8) 130 (5-1/8) 21 (7/8) 8 A-S701 A-S701 INTERNAL VIEW SERVICE PRECAUTIONS Safety measures Some internal parts in this product contain high vol

21、tages 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

22、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 MA

23、IN (8) b MAIN (2) c FUNCTION (4) d MAIN (3) (R model) e DIGITAL f MAIN (6) g FUNCTION (1) h FUNCTION (2) i FUNCTION (3) j MAIN (5) k MAIN (1) l MAIN (4) m POWER TRANSFORMER n OPERATION (7) o OPERATION (4) p OPERATION (3) q OPERATION (1) r OPERATION (2) s OPERATION (6) t OPERATION (5) Top view Front

24、view 13892 nopqr 4567 st kjlm 9 A-S701 A-S701 DISASSEMBLY PROCEDURES (Remove parts in the order as numbered.) Disconnect the power cable from the AC outlet. 1. Removal of Top Cover a. Remove 4 screws (1), 4 screws (2) and screw (3). (Fig. 1) b. Remove the top cover. (Fig. 1) 2. Removal of Front Pane

25、l Unit a. 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. 1 Front panel unit Knob VOLUME Knob INPUT Knob BASS/TREBLE/BAL./LOUD. Knob SPEAKERS OFF/A/B/A+B Cap POWE

26、R Top frame Top cover 10 A-S701 A-S701 Sub-chassis unit Hook CB706 CB101 CB105 Hook CB853 CB2 CB21 FUNCTION (1) P.C.B. FUNCTION (2) P.C.B. FUNCTION (3) P.C.B. CB506 CB505 DIGITAL P.C.B. CB508 CB304 CB301 CB303 3. Removal of Sub-chassis Unit a. Remove 2 screws ( ). (Fig. 2) b. Remove CB505, CB508, CB

27、706 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.

28、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. 2 Fig. 3 11 A-S701 A-S701 When checking the P.C.B.s: Put the rubber sheet and the cloth over this unit, Then place the sub-chassis

29、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 fl exible fl at cable, be careful with polarity. Ground lead Sub-chassi

30、s unit Rubber sheet and cloth Fig. 4 12 A-S701 A-S701 UPDATING FIRMWARE When the following parts are replaced, the firmware must be updated to the latest version. FUNCTION P.C.B. Confi rmation of fi rmware version Before and after updating the firmware, check the firmware version by using the self-d

31、iagnostic 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 beginnin

32、g. Factory preset After 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” (pow

33、er) 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

34、 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 fi rmware. CD player: CD-C600/CD-S1000/CD-S2000/CD-S300/CD-S700/CDX-496/CDX-596/CDX-890 DVD player: DV-C6760/DVD-840/DVD-C

35、740/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-S840 BD (Blu-ray) player: BD-940/BD-S1065/BD-S1900/BD-S2900/BD-S671 Others: CDR-D651/CDR-HD100 13 A-S701 A-S701 Connection Use the

36、 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 Procedures 1. 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