Yamaha A-S2000 Service Manual
Yamaha A-S2000 - Amplifier Manual
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- Yamaha A-S2000 | Service Manual - Page 1
STEREO AMPLIFIER A-S2000 SERVICE MANUAL A-S2000 IMPORTANT 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 - Yamaha A-S2000 | Service Manual - Page 2
A-S2000 I TO SERVICE PERSONNEL 1. Critical Components Information Components having special characteristics are marked s 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, - Yamaha A-S2000 | Service Manual - Page 3
I REAR PANELS A-S2000 (U, C models) A-S2000 (R model) A-S2000 (T model) A-S2000 3 A-S2000 - Yamaha A-S2000 | Service Manual - Page 4
A-S2000 A-S2000 (K model) A-S2000 (A model) A-S2000 (B model) 4 A-S2000 - Yamaha A-S2000 | Service Manual - Page 5
A-S2000 (G model) A-S2000 (L model) A-S2000 (J model) A-S2000 5 A-S2000 - Yamaha A-S2000 | Service Manual - Page 6
A-S2000 I REMOTE CONTROL PANELS RAS21 (U, C, R, T, A, B, G, L models) RAS22 (K, J models) A-S2000 6 - Yamaha A-S2000 | Service Manual - Page 7
A-S2000 I SPECIFICATIONS I Audio Section Minimum RMS Output Power (Power Amp. Section 20 Hz to 20 kHz, 0.02 % THD) 8 ohms 90 W + 90 W 4 ohms ohms Headphone Rated Output 1 kHz, 0.2 % THD, 32 ohms 30 mW Channel Separation 1 kHz/10 kHz) CD, etc. (5.1 k-ohms terminated 74/54 dB or more PHONO - Yamaha A-S2000 | Service Manual - Page 8
A-S2000 I INTERNAL VIEW Top View 1 2 3 4 56 7 8 90 Front View A BC D EF G 1 FRONT (14) P.C.B. (R, L models) 2 FUNCTION (3) P.C.B. 3 FRONT (13) P.C.B. 4 MAIN (2) P.C.B. 5 FUNCTION (2) P.C.B. 6 POWER TRANSFORMER 7 MAIN (3) P.C.B. 8 MAIN (1) P.C.B. 9 FRONT (12) P.C.B. 0 FRONT (11) P.C.B. A FRONT - Yamaha A-S2000 | Service Manual - Page 9
servicing, such as wearing insulating gloves. • Note that positions indicated below are dangerous even after the power is turned off because an electric switch to the ON position. f. Set the "PHONO MM/MC" switch to the MM position. g. G ʠ1)0/0 H JHʣ A-S2000 * When installing the knob - Yamaha A-S2000 | Service Manual - Page 10
A-S2000 G When installing the knob VOL unit: a. Turn the VOLUME (VR501) counterclockwise fully. (Fig. 2) b. Match the slit in the knob VOL unit with the "VOLUME MIN" - Yamaha A-S2000 | Service Manual - Page 11
A-S2000 4. Removal of Front Frame Ass'y a. Remove 4 screws (7) to remove the frame top. (Fig. 3) b. Remove 8 screws (8). (Fig. 3) c. Remove JHʣ E 44 JHʣ Frame top 7 7 Front frame ass'y 44: 8 8 8 Front frame ass'y 44: CB519 CB517 CB521 SW2 Fig. 3 CB501 CB504 SW1 A-S2000 11 - Yamaha A-S2000 | Service Manual - Page 12
A-S2000 When checking the P.C.B.: • Put the rubber sheet and cloth over this unit. Then place the P.C.B.s upside down on the cloth and check it. (Fig. 4) • Reconnect - Yamaha A-S2000 | Service Manual - Page 13
S2000 5. Removal of Amplifier Unit a. Remove 8 screws (9) and 2 screws (0). (Fig. 5) b. Remove the frame side L. (Fig. 5) c. Remove 4 screws (A). (Fig. 5) d. Remove CB71-74, CB76, CB84 and CB406. (Fig. 5) e. Remove the amplifier E CB72 E 9 A CB71 0 AMP unit L CB74 CB76 CB73 CB84 CB25 - Yamaha A-S2000 | Service Manual - Page 14
A-S2000 G When installing the power unit: When installing the power unit, be very careful not to cause any damage to the cable at the bottom with the end of the screw. (Fig. 6) JHʣ Bottom view Cable έʔϒϧ - Yamaha A-S2000 | Service Manual - Page 15
from the chassis, connect the ground point to the chassis, using a ground lead wire or the like. (Fig. 7) • It is also possible to check the amplifier unit L/R from the bottom. (Fig. 7) 1 3 1$#Λ JH 3 3 JH 3 JHʣ AMP unit L Rubber sheet and cloth Ground lead Ξʔεઢ - Yamaha A-S2000 | Service Manual - Page 16
A-S2000 7. Removal of FUNCITON (2) P.C.B. a. Remove 4 screws (F) and a screw (G). (Fig. 8) b. Remove CB401-404. (Fig. 8) c. Remove the connector TR. (Fig. 8) d. Disconnect the cable (W4004) from the bottom. (Fig. 9) e. - Yamaha A-S2000 | Service Manual - Page 17
Bottom view A-S2000 A-S2000 W4004 Fig. 9 8. Removal of BALANCE P.C.B. a. Remove 3 screws (H) and 4 screws (I). (Fig. 8) b. Remove CB59 and CB201-203. (Fig. 8) c. Remove BALANCE P.C.B.. (Fig. 8) 9. Removal of Speaker Terminal L/R a. Remove 2 screws (J) - Yamaha A-S2000 | Service Manual - Page 18
30/5ʢʣ1 B SͷωδຊɺTͷωδຊɺU JHʣ C JHʣ D 8 JHʣ E '6/$5*0/ʢʣ1$#͓Αͼ'30/5ʢʣ1$#Λα ϙʔτ13&-3 JHʣ Support PRE L αϙʔτ13&- CB305 U FUNCTION (1) P.C.B. FRONT (10) P.C.B. S T S Support PRE R αϙʔτ13&3 S S Fig. 10 Bottom view A-S2000 W3004 Fig. 11 18 - Yamaha A-S2000 | Service Manual - Page 19
I AMP ADJUSTMENT G Idling Adjustment Precaution for handling measuring instrument The ground side of the measuring instrument to be connected to the speaker terminal of this unit must be kept in floating condition because this unit is equipped with the floating balanced power amplifier. Condition - Yamaha A-S2000 | Service Manual - Page 20
A-S2000 G Headphone DC Offset Adjustment Condition • Start adjustment 5 sec or more after the power is turned on. • No input signal. • Non loaded condition DC offset adjustment Adjust - Yamaha A-S2000 | Service Manual - Page 21
(RS232C) • Firmware downloader program FlashSta.exe (Ver. 2.0) • Firmware A-S2000.s2 A-S2000.id • RS232C cross cable "D-sub 9 pin female" (Specifications) Pin No.2 RxD Pin No.3 TxD Pin No.5 GND Pin No.7 writing, keep the other application software on the PC closed. It is also recommended to keep the - Yamaha A-S2000 | Service Manual - Page 22
A-S2000 G Operation Procedures 1. Turn off the power of this unit and disconnect the power cable from the as shown below. (Fig. 1) 3 34 48 4)6$0 JHʣ 1 34 JHʣ Panel side L Top cover A-S2000 Writing port FRONT (1) P.C.B.: CB515) PC Serial port (RS232C 34$ʣ - Yamaha A-S2000 | Service Manual - Page 23
34$ 1PSUɿʠ$0.Y 1 JHʣ 0 MBTI4UBSU JHʣ ʠ108&30/0 0 0 JHʣ ʠ4FUCBVESBUF JHʣ Select "Inter flash memory". ʠ*OUFSGMBTINFNPSZ After a 5 seconds A-S2000 Select the serial port of the PC connected to the main unit 1 Fig. 2 11. Select "38400" for Baud rate and "15 - Yamaha A-S2000 | Service Manual - Page 24
13. "ID Check" is displayed. (Fig. 4) Click [Refer...], and select "A-S2000.s2". (Fig. 4) * The ID code and MCU type are loaded when the file is JHʣ When [Refer...] is clicked, the open file screen is displayed. ʦ3 F G F S Select the firmware "A-S2000.s2 4T Fig. 4 A-S2000 24 - Yamaha A-S2000 | Service Manual - Page 25
SBTF0 JHʣ ʦ0 JHʣ 1SPHSBN0 JHʣ ʦ0 JHʣ ʠ108&30/0 0 MBTI4UBFYF 34 34 When click [E.P.R...], "Erase OK?" is displayed. ʦ&13 SBTF0 When click [OK], writing is started. ʦ0 A-S2000 Writing Collating / র߹த Click [OK]. ʦ0 Writing completed Fig. 5 25 - Yamaha A-S2000 | Service Manual - Page 26
BALANCE" and "TREBLE" knobs counterclockwise fully and then while pressing down the "AUDIO MUTE" switch, set the "POWER ON/ OFF" switch to the ON position ) when the firmware version is [V0035] ྫʣ 7 A-S2000 "POWER ON/OFF" switch "TREBLE" knob Fig. 6 "BALANCE" knob "AUDIO MUTE" switch 26 - Yamaha A-S2000 | Service Manual - Page 27
A-S2000 G Factory Reset Set back to the factory setting (INPUT: CD BAL). 1. Turn the "BALANCE" knob clockwise fully and then while pressing down the "AUDIO MUTE" switch, set the "POWER ON/OFF" switch to the ON position. (Fig. 7) 2. The INPUT selector LED "CD BAL" will light up and the normal - Yamaha A-S2000 | Service Manual - Page 28
switch, set the "POWER ON/OFF" switch to the ON position. 6%*0 .65 108&30/ 0 0/ʹ͠·͢ɻ POWER indicator "BALANCE" knob A-S2000 "POWER ON/OFF" switch "BALANCE" knob "AUDIO MUTE" switch • List of protection information The type of protection function is indicated by the flashing pattern - Yamaha A-S2000 | Service Manual - Page 29
transformer, +18V, +12C of FUNCTION P.C.B., MC ±20V, MM ±25V, LINE1 ±25V, LINE2 ±25V, VOL1 ±12V and VOL2 ±12V of FRONT P.C.B. • PS AMP source protection 1/2 Cause : Abnormal voltage of amplifier and causes hindrance to trouble shoot, it will be down the "AUDIO MUTE" switch, set the - Yamaha A-S2000 | Service Manual - Page 30
is [V0035] ྫʣ 7 "TREBLE" knob "BALANCE" knob G Factory Reset Set back to the factory setting (INPUT: CD BAL). • Operation procedures Turn the "BALANCE" knob clockwise fully and then while pressing down the "AUDIO MUTE" switch, set the "POWER ON/OFF" switch to the ON position. The INPUT - Yamaha A-S2000 | Service Manual - Page 31
35 36 37 38 39 40 41 42 43 44 45 46 47 48 I/O port P2 (LED drive) I/O port P1 49 50 51 52 53 54 55 56 I/O port P0 64 THM_R 63 4051A 40 STBY_CNT 39 REM 38 EXDT 37 MVOL+ 36 MVOL35 RY_HP 34 RY_UNBAL 33 RY_BAL_GAIN A-S2000 PWR_DET 17 CNVSS 18 /RESET 19 PRI_R 20 PRI_L 21 XIN 22 XOUT 23 VSS 24 - Yamaha A-S2000 | Service Manual - Page 32
A-S2000 Pin Port Name No. Function Name I/O (P.C.B.) Detail of Function 1 P6-2/AN2 2 P6-1/AN1 3 P6-0/AN0 4 P5-7/INT3 5 P5-6/PWM 6 P5-5/CNTR1 7 P5-4/ XIFOJOTUBOECZNPEF-PX GJYXIFOOPSNBMPQFSBUJPO O "%.69TFMFDU O "%.69TFMFDU O "%.69TFMFDU O $MPDLGPSFYUFOU*$ 32 A-S2000 - Yamaha A-S2000 | Service Manual - Page 33
A-S2000 Pin Port Name No. 45 P0-3/AN11 46 P0-2/AN10 47 P0-1P/AN9 48 P0-0/AN8 49 P3-7/SRDY3 50 P3-6/SCLK3 51 P3-5/ EFUFDU SI %BUBJOGPSFYUFOE BY.)[XIFOVTJOH7%% UP7 AD )FBEQIPOF%$QSPUFDUEFUFDU AD )FBEQIPOF%$QSPUFDUEFUFDU AD %FUFDUUIFSNPNFUFS*$ A-S2000 33 - Yamaha A-S2000 | Service Manual - Page 34
CD O FUNCTION LED TUNER O FUNCTION LED LINE1 O FUNCTION LED LINE2 O FUNCTION LED BALANCE O FUNCTION LED PHONO O FUNCTION LED MAIN_DIRECT O LED MUTE O O Treble control O Bass control O Initial clear extecded IC I- I Detect head phone insert, H: HP non inserted / L: HP SW AD MAIN VOLUME AD A-S2000 34 - Yamaha A-S2000 | Service Manual - Page 35
10 1 NJM2068MD-TE2 24 1 NJM7812FA 12 +VS VOUT GND NJM7912FA A-S2000 M38039xxxxx 48 49 33 32 64 1 17 16 OP275GSR 8 4 1 TC74HC4051AFEL 8 16 1 3: IN 1: OUT 2: COM TC94A81UG 1 23 1: COMMON 2: INPUT 3: OUTPUT 8 4 1 RH5RE58AA-T1-FA 33 34 23 22 44 1 12 11 123 1: Vin 2: GND - Yamaha A-S2000 | Service Manual - Page 36
A-S2000 • Transistors 2SA970 2SC2240 2SC2878 2SA1036K 2SD1938F 2SA1312-GR,BL 2SA1037K 2SA1708 2SC4488 2SA1145 2SC2705 2SA2168 2SC5291 ECB C E DTC144EKA G D S KRA104S-RTK KRC104S-RTK G S D 4 6 654 G1 D2 S2 3 1 D1 S1 G2 123 3 2 1 1: GND 2: IN 3: OUT OUT COMMON IN A-S2000 36 - Yamaha A-S2000 | Service Manual - Page 37
48 47 60 PRV1 PRV BALANCE UNBALANCE CONVERTER HP END LOW IMPEDANCE DRIVE HEADPHONE AMP. RY_HP RY_BAL 32 IC502 17 5 RY_CD 26 AUDIO) LED_PWR REM IC501 PDET PRV L CH +B4/-B4 HPTRIM 14 SP_AB 15 3,4 9-11 SUB-TRANSFORMER T1 D304 D336 for COLD 6 (for POWER AMP / VOLTAGE AMP STAGE - Yamaha A-S2000 | Service Manual - Page 38
A B C D E F G H I J A-S2000 1 I PRINTED CIRCUIT BOARDS BALANCE P.C.B. (Side A) 2 HOT 2 1 3 GND GOLD INPUT CD BAL R L • Semiconductor Location Ref no. Location Ref no. Location Ref no. Location Ref no. Location Ref no. Location IC201 G6 Q2007 F4 Q2014 E4 Q2021 - Yamaha A-S2000 | Service Manual - Page 39
A B C D E 1 BALANCE P.C.B. (Side B) 2 3 4 5 6 7 F G H I • Semiconductor Location Ref no. Location Ref no. Location D2019 F4 D2033 F5 D2020 F4 D2034 H5 D2021 G4 D2035 C5 D2022 H4 D2036 E5 D2023 H4 D2037 H5 D2024 H4 D2038 C5 D2027 E6 D2039 E5 D2032 F5 J A-S2000 39 - Yamaha A-S2000 | Service Manual - Page 40
A B C D E F G H I J A-S2000 1 FUNCTION (1) P.C.B. (Side A) INPUT LINE2 2 CD R L TUNER LINE1 PB REC L/R L/R L/R L/R MAIN IN L/R PRE OUT L/R MBAL_L+ AGND MBAL_LAGND MBAL_R+ AGND MBAL_RAGND PREOUT_L AGND PREOUT_R NC I_BALGAIN RY_BALGAIN RY_UNBAL -12RY NC OPE-12 - Yamaha A-S2000 | Service Manual - Page 41
G5 D3014 F5 D3024 G5 D3030 F5 D3036 C5 D3009 C5 D3019 D5 D3025 E5 D3031 G5 7 D3010 C5 D3020 D5 D3026 D5 D3032 B5 J A-S2000 41 - Yamaha A-S2000 | Service Manual - Page 42
A B C A-S2000 1 FUNCTION (2) P.C.B. (Side A) 2 FUNCTION (1) (W3003) 3 12RY OPE-12 AGND AGND OPE+12 NC 60VGND 60VGND LINE1-25V LINE1GND LINE1GND LINE1+25V LINE2-25V LINE2AGND LINE2+25V - Yamaha A-S2000 | Service Manual - Page 43
A B C D E F G H I J A-S2000 1 FUNCTION (2) P.C.B. (Side B) 2 • Semiconductor Location Ref no. Location Ref no. Location Ref no. Location Ref no. Location Ref no. Location Ref no. Location D4009 I6 D4015 - Yamaha A-S2000 | Service Manual - Page 44
A B C D E F G H I J A-S2000 1 2 FUNCTION (3) P.C.B. (Side A) 3 U, C, T, K, A, B, G, J models R, L models POWER TRANSFORMER U, C, T, K, A, B, G, J models GY BR BC2 BR GY U, C, T, K, A, B, G, J R, L X O X O O X O X AC IN W4 R, L models POWER TRANSFORMER COM OUT IN - Yamaha A-S2000 | Service Manual - Page 45
A B C D E F G H I J A-S2000 1 2 FUNCTION (3) P.C.B. (Side B) 3 U, C, T, K, A, B, G, J models 4 R, L models 5 6 7 R, L models • Semiconductor Location Ref no. Location D1 E4 D2 E4 D3 E4 D4 D4 D5 D4 D6 E4 D7 E4 D8 - Yamaha A-S2000 | Service Manual - Page 46
A B C D E F G H I J A-S2000 1 MAIN (1) P.C.B. (Side A) 2 3 MAIN (2) (CB71) +5M MG THMR HPRRDR 4 PRIR PRDR HPR HPRGND MAIN (2) (CB73) 5 W103 W104 RIDL2_P RIDL2_N -PB AGND AGND +PB -B1 +B1 +B2 - - Yamaha A-S2000 | Service Manual - Page 47
A B C D E F G H I 1 MAIN (1) P.C.B. (Side B) 2 3 4 5 6 • Semiconductor Location MAIN (4) P.C.B. (Side B) Ref no. Location D122 F5 D123 C4 Q114 D5 Q118 D5 7 J A-S2000 47 - Yamaha A-S2000 | Service Manual - Page 48
A B C D E F G H I J A-S2000 1 MAIN (2) P.C.B. (Side A) 2 3 INLAGND INL+ FUNCTION (2) (CB406) 4 LSP_P LSP_N 5 FRONT (13) (W201A, W201B) CB84 HPPRDL PRIR PRIL PRDR PRDL FRONT (1) (CB521) HPR HPRGND MAIN (1) (W104) HP GND HP GND HP GND MAIN (3) (W318) HPL GND HPR FRONT (2) (CB504) - Yamaha A-S2000 | Service Manual - Page 49
A B C D E 1 MAIN (2) P.C.B. (Side B) 2 3 4 5 6 MAIN (5) P.C.B. (Side B) 7 F G H I • Semiconductor Location Ref no. Location D222 E4 D223 H4 Q214 G5 Q218 G5 J A-S2000 49 - Yamaha A-S2000 | Service Manual - Page 50
4 POWER TRANSFORMER 5 HP GND HP GND HP GND MAIN (2) (CB52) 6 7 50 W316 W314 W315 W318 C D E F G H I J Safety 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 - Yamaha A-S2000 | Service Manual - Page 51
A B C D E 1 MAIN (3) P.C.B. (Side B) 2 3 4 5 6 7 F G H I • Semiconductor Location Ref no. Location D309 F4 D310 F4 D329 E4 D330 E4 Q300 F4 Q301 F5 Q302 F4 Q318 E4 Q322 E4 J A-S2000 51 - Yamaha A-S2000 | Service Manual - Page 52
A B C A-S2000 1 FRONT (1) P.C.B. (Side A) 2 FUNCTION (1) (W3004) CB517 3 RY_DIR RY_BYP EV1_MT EV1_CE EV1_CL EV1_DA MT_M -12RY SW_TRE SW_BAS EV2_CE EV2_CL EV2_DA MG RY_CD RY_TU RY_L1 RY_L2 MT_PRE MT_REC - Yamaha A-S2000 | Service Manual - Page 53
B4 Q5033 D3 D5036 C4 Q5035 D3 D5037 C4 Q5036 B5 Q5007 D5 Q5037 B3 Q5008 D5 Q5038 B3 Q5009 B3 F G H I FRONT (2) P.C.B. (Side B) FRONT (3) P.C.B. (Side B) J A-S2000 53 - Yamaha A-S2000 | Service Manual - Page 54
MC PHONO D E F G H I J W5005B CB509 FRONT (5) P.C.B. (Side A) INPUT FRONT (3) (W5005A) I_ISEL MG NC FRONT (6) P.C.B. (Side A) FRONT (1) (W5006) LED_MT LED_MDIR LED_PHO LED_BAL LED_L2 LED_L1 LED_TU LED_CD DGND +5C FRONT (8) P.C.B. (Side A) FRONT (3) (W5007A) W5007B AUDIO MUTE I_MMMC - Yamaha A-S2000 | Service Manual - Page 55
A B C 1 FRONT (4) P.C.B. (Side B) 2 D E F FRONT (5) P.C.B. (Side B) G H I FRONT (6) P.C.B. (Side B) J A-S2000 3 4 5 FRONT (7) P.C.B. (Side B) FRONT (11) P.C.B. (Side B) FRONT (8) P.C.B. (Side B) 6 • Semiconductor Location Ref no. Location D345 G5 D346 H5 D5026 B2 Q305 G5 Q306 H5 7 - Yamaha A-S2000 | Service Manual - Page 56
A B C D E A-S2000 1 FRONT (10) P.C.B. (Side A) PHONO 2 R L U, C, R, T, A, L, J models 3 F G H I J • Semiconductor Location Ref no. Location Ref no. Location Ref no. Location Ref no. Location Ref no. Location Ref no. Location D1003 H4 D1009 E3 - Yamaha A-S2000 | Service Manual - Page 57
A B C D E F G H I J A-S2000 1 FRONT (10) P.C.B. (Side B) 2 • Semiconductor Location Ref no. Location Ref no. Location Ref no. Location Ref no. Location D1001 G4 D1013 G6 Q1005 D4 Q1020 G3 - Yamaha A-S2000 | Service Manual - Page 58
A B C A-S2000 1 FRONT (12) P.C.B. (Side A) BALANCE (CB59) 2 CB59 RY_SPA RY_SPB -12V W101A MAIN (1) (CB64) BLACK RSP_N BROWN RSP_P W101B 3 4 RY_SPB -12V FUNCTION (3) (W4) FRONT (13) P.C.B. (Side B) POWER TRANSFORMER FRONT (14) P.C.B. (Side B) R, L models • Semiconductor Location Ref no - Yamaha A-S2000 | Service Manual - Page 59
G H CD BAL L 12.6 0 IC201 0 0 -12.5 0 IC201 0 0 -11.9 -11.9 I J K L M N A-S2000 W2001 CB203 Page 66 H2 to FRONT (12)_CB59 Page 62 H8 to FUNCTION (3)_W3 CB201 CB202 Page 60 K2 to FUNCTION (1)_W3005 Page 60 K2 to FUNCTION (1)_W3006 IC201: NJM2068MD-TE2 Dual operational amplifier - Yamaha A-S2000 | Service Manual - Page 60
B5 to FRONT (1)_CB519 Page 65 B5 to FRONT (10)_W1003 M N IC301: NJM2068MD-TE2 Dual operational amplifier OUT1 1 -IN1 2 +IN1 3 -VCC 4 +- +- 8 +VCC 7 OUT2 6 -IN2 5 +IN2 IC302, 303: OP275GSR Dual bipolar/JFET, audio operational amplifier OUT A 1 -IN A 2 +IN A 3 V- 4 8 V+ 7 OUT B 6 -IN B 5 +IN - Yamaha A-S2000 | Service Manual - Page 61
A B C D E F G H I J K L M N FUNCTION 2/3 1 A-S2000 12.5 12.5 0 0 0 0 0 0 0 0 0 2 3 4 IN L 5 CB401 Page 60 K6 audio operational amplifier OUT A 1 -IN A 2 +IN A 3 V- 4 8 V+ 7 OUT B 6 -IN B 5 +IN B IC413: NJM2068MD-TE2 Dual operational amplifier Test specifications equal to those - Yamaha A-S2000 | Service Manual - Page 62
A B C D E F A-S2000 1 FUNCTION 3/3 2 5.0 5.0 16.6 8.3 5.0 TRANSFORMER 8 0 -12.0 -19.6 0 -12.0 IC52 9 10 # All voltages are measured with a 10MΩ/V DC electronic voltmeter. # Components having special characteristics are marked s and must be replaced with parts having specifications - Yamaha A-S2000 | Service Manual - Page 63
-45.0 -57.2 9 MAIN (2) K L M N A-S2000 To POWER TRANSFORMER To POWER TRANSFORMER CB24 W317 W103 CB21 AC89.5 -61.0 61.1 CB22 AC48.5 W104 servicing, such as wearing insulating gloves. • Note that positions indicated below are dangerous even after the power is turned off because an electric - Yamaha A-S2000 | Service Manual - Page 64
CB509 INPUT indicator CD TUNER LINE 1 LINE 2 CD BAL PHONO MAIN DIRECT AUDIO MUTE 5.0 14 DOUT 15 VDD 19 VSS IC505: RH5RE58AA-T1-FA Voltage regulator VIN 2 VOUT 3 Control replaced with parts having specifications equal to those drive) I/O port P1 49 50 51 52 53 54 55 56 I/O port - Yamaha A-S2000 | Service Manual - Page 65
A B C D E F G H I FRONT 2/3 1 2 3 4 PHONO 5 6 7 8 10.6 10.6 10.6 10.6 0.6 0.6 0.6 0.6 0 0 0 0 0 -0.5 0 24.7 25.2 -25.3 -0.7 -0.1 0.2 0.7 25.7 9 10 J K L M N A-S2000 20.9 20.9 0.6 0 25.7 25.7 0.6 0.6 0 0 -0.5 -20.7 -20.7 0 parts having specifications equal to - Yamaha A-S2000 | Service Manual - Page 66
E F G H I J K L M N A-S2000 1 FRONT 3/3 2 CB34 Page 63 M2 3 to to FUNCTION (3)_W4 W12A 8 W12B W12C W12D To POWER TRANSFORMER 8P 9 620mm Page 62 G2 to FUNCTION (3)_CB2 # and must be replaced with parts having specifications equal to those originally installed. 10 # - Yamaha A-S2000 | Service Manual - Page 67
A-S2000 I REPLACEMENT PARTS LIST • ELECTRICAL COMPONENT PARTS WARNING G Components having special characteristics are marked s and must be replaced with parts having specifications equal to those originally installed. G The chip resistor is not supplied as a replacement part. * When a chip - Yamaha A-S2000 | Service Manual - Page 68
A-S2000 P.C.B. BALANCE 3FG/P 1BSU/P %FTDSJQUJPO ñ ñ ñ ñ ñ 3FNBSLT . - Yamaha A-S2000 | Service Manual - Page 69
έϛίϯ ÷ø ϚΠϥʔίϯ ÷ø έϛίϯ έϛίϯ ÷ø έϛίϯ έϛίϯ ̥̥ίϯ ̥̥ίϯ ÷ø ϚΠϥʔίϯ ÷ø ϚΠϥʔίϯ ÷ø έϛίϯ ÷ø ÷ø ÷ø ̥̥ίϯ ϚΠϥʔίϯ ÷ø ϚΠϥʔίϯ ÷ø ϚΠϥʔίϯ ÷ø ϚΠϥʔίϯ ÷ø ϚΠϥʔίϯ ÷ø ÷ø έϛίϯ ÷ø ̥̥ίϯ ̥̥ίϯ ÷ø ÷ø ̥̥ίϯ ̥̥ίϯ ÷ø ̥̥ίϯ ̥̥ίϯ ÷ø έϛίϯ ÷ø 69 A-S2000 - Yamaha A-S2000 | Service Manual - Page 70
A-S2000 P.C.B. FUNCTION 3FG/P 1BSU/P %FTDSJQUJPO 3FNBSLT .BSLFUT ϥϯΫ ÷ø ÷ø ÷ø ÷ø ÷ø ÷ø ÷ø ÷ø ✻ New Parts 70 A-S2000 - Yamaha A-S2000 | Service Manual - Page 71
A-S2000 P.C.B. FUNCTION 3FG/P 1BSU/P %FTDSJQUJPO s čø s čø s ĐĊüø s ĐĊüù ✻ New Parts 3FNBSLT .BSLFUT ϥϯΫ ÷ø ÷ø ÷ù 71 A-S2000 - Yamaha A-S2000 | Service Manual - Page 72
A-S2000 P.C.B. FUNCTION 3FG/P 1BSU/P %FTDSJQUJPO 3FNBSLT .BSLFUT ÷ø ÷ø ÷ø ÷ø ÷ø ÷ø ÷ø ✻ New Parts 72 A-S2000 - Yamaha A-S2000 | Service Manual - Page 73
A-S2000 P.C.B. FUNCTION and P.C.B. MAIN 3FG/P 1BSU/P %FTDSJQUJPO s ęĠø ñ s ěø ñ s ěø ñ s ěø ñ s ěø ěČø 3FNBSLT .BSLFUT ÷ú ÷ø A-S2000 ñ ñ ñ ñ ñ ñ ñ Ċĉùû Ċĉùý Ċĉüù - Yamaha A-S2000 | Service Manual - Page 74
A-S2000 P.C.B. MAIN 3FG/P 1BSU/P %FTDSJQUJPO Ċøùÿ ĊøùĀ Ċøúù Ċøúû Ċøûþ Ċù÷ú Ċù÷û Ċù÷ü Ċùø÷ Ċùøø Ċùøú Ċùøû Ċùøý Ċùøþ Ċùøÿ ĊùøĀ Ċùùø Ċùùý Ċùùÿ ĊùùĀ Ċùúù - Yamaha A-S2000 | Service Manual - Page 75
A-S2000 P.C.B. MAIN 3FG/P s s s Ęø÷ú s s Ęø÷Ā s s s s Ęøùù s s Ęøú÷ s Ęøúø s 1BSU/P %FTDSJQUJPO 3FNBSLT .BSLFUT ✻ New Parts Note) Those parts marked with "#" are not included in the P.C.B. ass'y 75 A-S2000 - Yamaha A-S2000 | Service Manual - Page 76
A-S2000 P.C.B. MAIN 3FG/P s Ęøúý s Ęøúþ s Ęøúÿ s s Ęù÷ú s s Ęù÷Ā s s s s Ęùùù s s Ęùú÷ s Ęùúø s s Ęùúý s Ęùúþ s Ęùúÿ s 1BSU/P %FTDSJQUJPO 3FNBSLT .BSLFUT ÷ø ✻ New Parts Note) Those parts marked with "#" are not included in the P.C.B. ass'y - Yamaha A-S2000 | Service Manual - Page 77
A-S2000 P.C.B. MAIN 3FG/P s ęøþù s s ęøĀû s s ęùþù s s ęùĀû s 1BSU/P %FTDSJQUJPO 3FNBSLT .BSLFUT ϥϯΫ ÷ø ÷ø A-S2000 ✻ New Parts 77 - Yamaha A-S2000 | Service Manual - Page 78
ñ ñ ñ ñ ñ Ċĉùþ Ċĉúû ĊĉüĀ ĊĉþĀ Ċøúÿ Ċùúÿ ✻ New Parts 78 3FNBSLT .BSLFUT ϥϯΫ ÷ø A-S2000 - Yamaha A-S2000 | Service Manual - Page 79
A-S2000 P.C.B. FRONT 3FG/P 1BSU/P %FTDSJQUJPO ✻ New Parts 3FNBSLT .BSLFUT ÷ø ÷ø ÷ø 79 A-S2000 - Yamaha A-S2000 | Service Manual - Page 80
A-S2000 P.C.B. FRONT 3FG/P 1BSU/P s čù Ęú÷ú Ęú÷û ñ Ęú÷þ ñ Ęú÷ÿ ñ Ęúøø ñ Ęúøù ñ Ęúøú ñ Ęúøû ñ Ęúøü ñ - Yamaha A-S2000 | Service Manual - Page 81
A-S2000 P.C.B. FRONT 3FG/P 1BSU/P %FTDSJQUJPO ęúøü ęúþú ęúþþ ęúÿù ęúÿü - Yamaha A-S2000 | Service Manual - Page 82
A-S2000 P.C.B. FRONT 3FG/P 1BSU/P s ĚĞø %FTDSJQUJPO 3FNBSLT .BSLFUT ęē ϥϯΫ ÷û ÷û ÷ø ÷ø ÷ù ÷ý ÷ý ÷ø A-S2000 ✻ New Parts 82 - Yamaha A-S2000 | Service Manual - Page 83
HJ35 9220 HF85 9220 HJ35 9330 HF85 9330 HJ35 9390 ❊ HJ35 9470 HF85 9470 1/4W Type HJ35 10mm 1/4W Type HF45 1/6W Type HF85 5mm A-S2000 83 - Yamaha A-S2000 | Service Manual - Page 84
A B C D E F G H I J A-S2000 1 • OVERALL ASS'Y 200 153 2 200-1 202 102 156 153 153 151 4-25 4-1 (3) 155 140 122 171 170 155 15 (2) 153 153 REAR UNIT 153 124 4 1-3 1-5 153 1-2 AMP L UNIT 153 122 4-21 152 153 15 (3) 153 1-4 10-3 10-16 4-21 155 153 124 10-3-6 16 (9) - Yamaha A-S2000 | Service Manual - Page 85
Ϩϯζɹ̧̘ ଋઢࢭΊ ÷ø φϕ̩̥ωδ φϕ̩̥ωδ ϚΠΫϩ̨̬ ̥̘αϙʔτ ÷ø ÷ø A-S2000 3FG/P 1BSU/P %FTDSJQUJPO - Yamaha A-S2000 | Service Manual - Page 86
A B A-S2000 1 • AMP L UNIT U, C, R, T, K, A, L, J models 2-24 2 2-24 C D E 2-19 B, G models 2-22 2-17 3 2-22 2-18 2-22 2-5 2-21 4 • AMP R UNIT 3-23 3-21 5 3-23 3-22 3-1 3-22 3-22 2-22 2-1 2-23 2-23 2-21 3-22 6 7 86 3-21 3-5 3-18 3-22 3-19 B, G models 3-17 3-24 3-24 U, - Yamaha A-S2000 | Service Manual - Page 87
8-11 8-34 8-5 (1) 8-15 8-35 8-32 8-33 8-36 K, B, G, L models 8-23 8-37 8-33 8-32 8-33 8-35 8-16 8-33 8-37 5 8-34 8-17 8-34 8-37 8-6 (10) 6 8-24 8-6 (12) 8-22 7 F G H I J A-S2000 3FG/P 1BSU/P %FTDSJQUJPO 3FNBSLT .BSLFUT - Yamaha A-S2000 | Service Manual - Page 88
A-S2000 I REMOTE CONTROL RAS21 (U, C, R, T, A, B, G, L models) / RAS22 (K, J models) • SCHEMATIC DIAGRAM * RAS21 (U, C, R, T, A, B, G, L models) RAS22 (K, J models) U1 SC73P1601MC-AA45 SC73P1601MC-AA46 VDD C1 + 47uF/10V C4 0.1uF * U1 1 20 - Yamaha A-S2000 | Service Manual - Page 89
A-S2000 • KEY LAYOUT 2 5 8 11 14 17 20 24 25 26 27 28 • KEY CODE RAS21 (U, C, R, T, A, B, G, L models) No. Customer code 1 - 2 85 3 - 4 - 5 7A85 6 - 7 - 8 7A85 SKIP+) - - T (SKIP-) - - A (PAUSE) - - D (STOP) - - W (PLAY) - - CD BAL - - - VOL+ INPUT Q MUTE INPUT W VOL- A-S2000 89 - Yamaha A-S2000 | Service Manual - Page 90
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■
CONTENTS
TO SERVICE PERSONNEL
..........................................
2
FRONT PANEL
..............................................................
2
REAR PANELS
..........................................................
3–5
REMOTE CONTROL PANELS
......................................
6
SPECIFICATIONS /
参考仕様
..........................................
7
INTERNAL VIEW
...........................................................
8
SERVICE PRECAUTIONS
/
サービス時の注意事項
....................................................
9
DISASSEMBLY PROCEDURES
/
分解手順
.............
9–18
AMP ADJUSTMENT
/
アンプ部調整
.......................
19–20
UPDATING FIRMWARE
/
ファームウェアの書き込み
.....................................
21–27
SELF-DIAGNOSTIC FUNCTION
/
ダイアグ（自己診断機能）
.....................................
28–30
IC DATA
.................................................................
31–34
PIN CONNECTION DIAGRAMS
............................
35–36
BLOCK DIAGRAM
.......................................................
37
PRINTED CIRCUIT BOARDS
................................
38–58
SCHEMATIC DIAGRAMS
......................................
59–66
REPLACEMENT PARTS LIST
..............................
67–87
REMOTE CONTROL
..............................................
88–89
101077
SERVICE
MANUAL
STEREO AMPLIFIER
2008
All rights reserved.
This manual is copyrighted by YAMAHA and may not be copied or
redistributed either in print or electronically without permission.
P.O.Box 1, Hamamatsu, Japan
'08.01
IMPORTANT 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 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 specified.
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 firm does not constitute authorization, certification 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.
Modifications are, therefore, inevitable
and specifications are subject to change without notice or obligation to retrofit.
Should any discrepancy appear to exist, please
contact the distributor's 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.
A-S2000
A-S2000