Technics-SADV250-cs-sch 电路图 维修手册.pdf

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1、http:/servis- Service Manual TOP NEXT ORDER NO. AD0103076C2 Stereo tuner/ amplifier lSA-DV250 Colour (S).Silver Type Areas EB.Great Britain. EG.Europe. System: SC-DV250 Because of unique interconnecting cables, when a compact requires service, send or bring in the entire system. Specification Amplif

2、ier Section (Low frequency side) Power output DIN 100Hz, THD 1%, 8 both channels driven: 2x45W RMS 100Hz, THD 10%, 8 both channels driven: 2x65W Amplifier Section (High frequency side) Power output DIN 1kHz, THD 1%, 6 both channels driven: 2x25W RMS 1kHz, THD 10%, 6 both channels driven: 2x35W Power

3、 output (prologic mode) DIN (front: high frequency) 1kHz, THD 1%, 6 both channels driven: 2x25W (front: low frequency) 100Hz, THD 1%, 8 both channels driven: 2x45W (surround) 1kHz, THD 1%, 8 both channels driven: 2x30W (center) 1kHz, THD 1%, 8: 60W RMS (front: high frequency) 1kHz, THD 10%, 6 both c

4、hannels driven: 2x35W (front: low frequency) 100Hz, THD 10%, 8 both channels driven: 2x65W (surround) 1kHz, THD 10%, 8 both channels driven: 2x40W (center) 1kHz, THD 10%, 8: 80W Total harmonic distorition Rated power at 1kHz/ 6: 1% Half power at 1kHz/ 6: 0.1% Load impedance Front (high frequency): 6

5、 (low frequency): 8 Surround: 8 Center: 8 FM tuner section Frequency range: 87.50-108.00MHz (0.05MHz steps) Sensitivity (S/N 26dB): 1.5V S/N: MONO 70dB (75dB, IHF) Antenna terminals: 75 (unbalance) AM tuner section RadioFans.CN 收音机爱 好者资料库 http:/servis- 7.1 To display the malfunction code TOP PREVIOU

6、S NEXT Fig. 7-1 TOP PREVIOUS NEXT U70 DVD: Automatically displays on the U70 DECK: tuner/amplifier when a malfunction occurs. Refer to Fig. 7-1. F61: Automatically displays on the tuner/amplifier when a malfunction occurs. Refer to Fig. 7-1. RadioFans.CN 收音机爱 好者资料库 http:/servis- 7.2 To return to the

7、 normal display TOP PREVIOUS NEXT 1. For U70 DVD/U70 DECK Press an any operation button on the tuner/amplifier. To re-display the code, switch the power off (POWER STANDBY button), and then switch power back on again. 2. For F61 If F61 is displayed, the power will automatically be switched off and t

8、he standby indicator will light up. F61 will be displayed for 3 seconds, and then the clock will be displayed. To re-display the code, switch the power on. F61 will be re-displayed, and then after 3 seconds the clock will be displayed and the power will automatically switch off. TOP PREVIOUS NEXT Ra

9、dioFans.CN 收音机爱 好者资料库 http:/servis- 7.3.1 U70 DVD, U70 DECK/(displayed automatically) TOP PREVIOUS NEXT lProblem or condition A bus-line communications error has occurred as a result of the flat cables being inserted incorrectly, thus preventing the system from operating. If U70 is displayed on the

10、tuner/amplifier, the Cassette deck or DVD Changer cannot be operated by remote control. lCorrection Procedure 1. To check for correct insertion of the flat cables. nInsert each connectors until you hear a click. nInsert the flat cables at the back of the unit in the order indicated. Refer to Fig. 8-

11、 2. Make sure the white side of the cables is on your right side. Refer to Fig. 8-3. Fig. 7-2. Fig. 7-3. 2. Breakage of the flat cables. (Check and replace.) 3. If the problem is not corrected by items 1 and 2 above, this indicates a faulty IC. SA-DV250: IC901 (C2BBFD000317) http:/servis- SL-DV250:

12、IC401 (M38504E6227F) RS-DV250: IC701 (M38503M2406F) Check these ICs and replace. TOP PREVIOUS NEXT http:/servis- 7.3.2 F61 TOP PREVIOUS NEXT lProblem or condition When the power switch is switched on, it automatically switches back off, making it impossible to switch power on. lCorrection procedure

13、Faulty Tuner/Amplifier (SA-DV250) output IC (IC601). (When a DC voltage is applied to speaker terminals.) TOP PREVIOUS NEXT S904 (PLAY/ REC) SCHEMATIC DIAGRAM-1 FL901 (A2BB00000084) 1 7 5 4 6 3 2 T S S908 (INPUT SELECTOR) S907 (SET) S906 (TUNING MODE) S905 (FM AUTO/MONO) JK903 PHONES 3.5mm STEREO R9

14、97 150 R996 150 D973 MA4030MTA C921 1000P C922 35V33 C920 25V22 R922 10K R921 10K R944 2.2K R912 4.7K R911 3.3K R910 2.2K R909 1.8K R916 1.5K R915 1.2K R914 1K R913 820 R907 3.3K R906 2.2K R905 1.8K R904 1.5K R903 1.2K R902 1K R901 820 FL DISPLAY 16810 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

15、 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 5053 542579 W905 S901 ( / ) C928 25V22 NOTE: The number which noted at the connectors on the schematic diagram as SCHEMATIC DIAGRAM-1 or SCHEMATIC DIAGRAM-2 indicates the schematic diagram serial number located on the left corner

16、in the schematic diagram. AOPERATION CIRCUIT C919 25V22 C927 25V22 C396 0.047 C923 0.1 C395 0.047 D974 MA165TA C907 470P C924 0.1 C904 0.01 R924 1K C908 470P R925 1K S914 (PS) S915 (PTY) S910 (TUNING,) S911 (TUNING,) S912 (TUNER/ BAND) S913 (DIGITAL S.WOOFER) (RDS DISP MODE) A B C D E F G HIJKL M N

17、O P Q R S T U X W V ABCDEFGHIJKLMNOPQRSTUVWXYZ S902 (CLOCK/ TIMER) S903 (-DEMO) :AUDIO SIGNAL LINE SCHEMATIC DIAGRAM-2 IC901 C2BBFD000317 SYSTEM CONTROL/ FL DRIVE C B A Q901 UN4212TA RESET R936 100 R919 15K R991 47K R91810K R92847K L9021H D901 1SS291TA L901 10H R951 330K R952 10M A B C D E F G H I J

18、 K L M N O P Q R S T U V W X Y Z R993 100K D931 MA165TA D933MA165TA R990 100K C916 6.3V100 D951 LNJ301MPUJAD (DIGITAL S.WOOFER) R995 220 D954 SELS5923C (PLAY/ REC) R986 1.5K D306 SELS5223C () R939 1.5K C905 1000P C901 6.3V100 R935100 R934100 R9881K R93710K R9871K R926 2.2K C912 0.1 R954 100K C926 10

19、00P R9601.5K R9581K R999 100K R95947 R969 2.7K D902 1SS291TA C903 0.01 C902 10V1000 X902 (32.7kHz) C911 18P C910 20P X901 (6MHz) 1 3 2 D9051SS291TA EFIKLMNOQ R940 1K R9291K R9301K R9321K R9311K R976 100K R956 1K R957 1K C915 0.01 C925 1000P R953100 A B C D G H J C914 50V2.2 D904 MA165TA A B C D E A

20、B C D E F G HIJKL M N O P Q R S TU V W X 1 11 21 2 12 22 3 13 23 4 14 24 5 15 25 6 16 26 7 17 27 8 18 28 9 19 29 10 20 30 3132333435363738394041424344454647484950 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96

21、 97 98 99100 -VP P13 P14 P15 P16 P17 P18 P19 P20 P21 P22 P23 P24 P25 P26 P27 P28 P29 P30 P31 P32 VDD4 P33 P34 P35 P36 P37 P38 REGIN0 REGIN1 8G REMOCON RDS DATA RDS CLK HP SW MIC DET VR JOGA VR JOGB NC(GND) SH REQ KEY KARAOKE KEY TU VDD1 XC OUT XC IN Vss X OUT X IN RESET AC IN SEL/ TUNER SEL TUNER ST

22、/ AV.6CH LC72 CK LC72 DI/ ST LC72 CE LC72 DO CHECK STAND-BY TIMER S.W.LED LOUNGE CHORUS MUTE NC POWER Vss2 VDD2 MUTE2 NC MUTE3 SHCS SHDO SHDI SHCK E DET CR TIMER SD VDD3 P12 P11 P10 P9 P8 P7 P6 P5 P4 P3 P2 P1 1G 2G 3G 4G 5G 6G 7G R994100K U R949 4.7K R950 100 : POSITIVE VOLTAGE LINE: NEGATIVE VOLTAG

23、E LINE 5.1V 5.1V 2V/2ms.DIV. 5V 0V 5V 0V T10ms. 2V/2ms.DIV. 0V 5V -30.1V -30.1V -29.3V -29.3V -29.3V -26.3V -20.5V -29.3V -29.3V -29.3V -23.5V -20.5V -23.4V -23.4V -23.7V -20.7V -29.6V -29.6V -29.6V -23.7V -26.6V -26.5V 5.1V -29.5V -29.5V -26.5V -17.2V -5.3V -10.3V 0.4V 0V -23.4V -20.5V -26.3V -26.3

24、V 5.1V -23.4V -20.5V -26.2V -29.2V -26.2V -26.2V -26.1V -26.3V -23.5V -23.5V -25.6V -27.5V -27.5V -25.5V -23.5V -25.6V 5.1V 2.6V 2.6V 0.6V 5.1V 0V 0V 1.4V 5.1V 5.1V 5.1V 2.3V 2.3V 2.7V 1.6V 5V 2.2V 0V 5.1V 5.1V 4.6V 0V 0V 2.5V 0V 5V 0V 5.1V 3.3V 1.9V 1.9V 1.4V 0V 5.1V 5.1V 4.8V 0V 0V 0V 0V 0V 0V FM

25、/ AM -30V 4V T5.5ms. 0V 0V 4V T5.5ms. -30V FM / AM 3.3V P-P F=6MHz FM / AM 4.2V P-P F=6MHz FM / AM 5.2V P-P F=32.7kHz FM / AM 5.2V P-P F=32.7kHz FM / AM 2V P-P F=32.7kHz FM / AM SCHEMATIC DIAGRAM-3 W901B W902B IC151 C1BB00000527 RDS SIGNAL DEMODULATOR 123 X151 R158 1K R154 100K R153 100K 1 2 3 4 5 6

26、 7 8 9 10 11 12 13 14 15 BACOM 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Q902 UN411FTA MUTING CONT. A B C 1 2 3 4 5 6 7 89 10 11 12 13 14 15 16 VREF HPX IN VDDA VssA FL OUT C IN TEST X OUT IDR RDCL RDDA RST MODE VDDB VssB X IN R962 22K VR901 EVQVBXFK124B (VOLUME) R945 100 R961 22K R943 100 C917 0.01 C155

27、1000P C153 1000P C160 1000P C159 6.3V47 R152 1K R151 1K C154 560P C158 6.3V47 C151 16V10 D907 MA165TA M BC R946 1K C909 1000P C918 6.3V100 DEA R941 1K L153 1H R155 120 D151 MA4051MTA L151 100H L152 100H C156 47P C157 47P A B C D E F G H I J K L N O Q S T AOPERATION CIRCUIT R942 2.2K R974 1K C931 16V

28、10 R965 3.9K R966 3.9K D961 MA4075MTA R975 22K D906 MA165TA U N 1 2 3 Z901 B3RAD0000028 (REMOTE SENSOR) R157 1K C152 330P : POSITIVE VOLTAGE LINE: NEGATIVE VOLTAGE LINE -30.1V 5.1V :AUDIO SIGNAL LINE 6V 7.6V 3.3V 0V 3.3V 2.6V 2.6V 0V 5.1V 2.5V2.7V 2.5V 2.5V 5.1V 2.5V 2.5V SCHEMATIC DIAGRAM-4 W902A W

29、901A CP101 C F G B A E D DET Rch IN CE Lch IN DI DO CL +B(2) SD +B(1) T.GND Q707 2SB1417PQTA REGULATOR Q723 2SC3940AQSTA REGULATOR R763 4.7K R2301K R2291K D721 MA4300MTA R708 4.7K C707 0.047 C706 35V10 C737 100 To SOUND PROCESSOR (SH-DV250) To TUNER UINT on SCHEMATIC DIAGRAM-10 C735 0.047 B A R563 2

30、.7K R564 2.7K C660 16V10 C659 16V10 R615 4.7K R614 4.7K R631 3.9K R632 3.9K C202 0.1 R203 100K R204 100K C201 0.1 C602 16V10 C708 0.047 R211 270 D201 MA4056MTA R687 1.5K R688 1.5K Q605,606 2SD2144STA MUTING Q605 Q606 R683 1K R617 4.7K 2 1 3 4 5 6 7 8 9 10 11 CB AX0X1VDD GVssINHZ0Z1Y1Y0 1615141312111

31、09 12345678 IC201 BU4053BCFE2 SIGNAL SELECTOR C655 16V10 C656 16V10 R606 4.7K R605 4.7K 2 15 3 4 5 6 7 8 9 10 11 12 13 14 1 2 15 3 4 5 6 7 8 9 10 11 12 13 14 1 20 2 1 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 K L M I J E F C D E F G E F G A B C D A B G H C601 16V10 R598 2.2K R597 2.2K R205 100K H

32、G R202 100K B C D E F C509 0.01 C510 0.01 R693 1K R692 1K C664 16V10 C725 16V47 A C R696 47K Q609,610 2SD2144STA MUTING Q609 Q610 Q612 UN411FTA MUTING CONT. B C R694 22K R511 47 R509 47 R51247 R51047 W501 D719 RL1N4003N02 D720 RL1N4003N02 D717 RL1N4003N02 D718 RL1N4003N02 H D C R695 470 D611 MA4051M

33、TA C740 16V10 C733 0.047 D737 MA4082LTA R764 330 MAIN CIRCUITB C731 1000P C741 0.1 TUNER Lch/C TUNER Rch A.GND Lch IN Rch IN +B(10V) SUR L SUR R S.W MIC -B(-10V) V.GND D.GND CS/ REQ CLK DATA CT GND SH FL1 SH FL2 SYNC R603 3.3K A B B R684 1K A C715 6800 C714 1000P D705 RL1N4003N02 A : POSITIVE VOLTAG

34、E LINE : NEGATIVE VOLTAGE LINE : FM SIGNAL LINE : AM SIGNAL LINE 14.7V 10.4V -37.3V-30.1V -30.7V 14.7V7.2V 7.8V -10V -10V 0V 0V -10.2V 5.1V 4.9V 0V -10V 0V 0.7V :AUDIO SIGNAL LINE 5.7V0V0V0V0V0V 6V 7.2V 7.6V -10.4V 0V0V-10.4V :MIC SIGNAL LINE SCHEMATIC DIAGRAM-5 M Q708 UN4211TA SWITCHING (POWER) Q60

35、1Q602 D756 MA700ATA C603470P C604470P C607470P C608470P C6491000P C6501000P C6051000P C6061000P C648 1000P C617 0.01 R637 15K R638 68K R619120K R622120K R621150K R624150K R620 120K R61256K R61156K R610150K R60956K R60856K R60756K C61056P C60956P C61215P C61139P C61447P C61347P R627 470K C616 50V0.47

36、 N D601 SB360L6508 D602 SB360L6508 D754 RL1N4003N02 C761 0.1 D701 1N5402BM21 C709 0.1 IC601 RSN311W64B POWER AMP D757 MA700ATA 1234567891011121314151819202122232425261617 R604 3.3K R601 3.3K R602 3.3K R618 4.7K Q601,602 2SC5398RSTA PROTECTOR D607 1SS291TA L K D658 MA165TA D657 MA165TA B A R685 1K R6

37、86 1K Q607, 608 2SD2144STA MUTING Q607 Q608 C705 0.01 G R776 10K Q709 2SD2144STA SWITCHING (POWER) R738 3.9K R739 47K C622 10V100 D659 MA165TA D751 1N5402BM21 D703 1N5402BM21 D753 RL1N4003N02 D761 RL1N4003N02 D755 RL1N4003N02 D752 1N5402BM21 D702 1N5402BM21 D704 1N5402BM21 G F E D A BC D558 MA165TA

38、R544 10K R572 15K R648 120 C618 0.01 R635 2.2K C619 0.1 Q503 2SC5398RSTA SWITCHING C704 4700 C702 4700 C703 4700 C701 4700 R761 220 R628 22K R691 68 R647 270 R623 120K : POSITIVE VOLTAGE LINE : NEGATIVE VOLTAGE LINE:AUDIO SIGNAL LINE 7.6V -10.4V 0V0V59.5V-59.5V0V28.9V-29.3V0V0V0V0V-0.2V29.4V-29.7V0V

39、0V54.1V-51.4V0V0V0V0V 0V 0V 5.1V5.1V 0V 0V 0.7V 0V0V 2.1V 14.7V 0.7V 0V 0.7V 0V SCHEMATIC DIAGRAM-6 CN781 F C A B D E Q551 2SA1995RSTA SIGNAL LEVEL DET. Q555 2SD2144STA SIGNAL LEVEL DET. Q702 2SB1548PQAU REGULATOR Q725 2SC5398RSTA STABILIZERQ705 2SA1995RSTA STABILIZER Q701 2SD2374PQAU REGULATOR R556

40、 100K R557 10K C721 10V100 D725 MA4082LTA R729 220 C723 0.047 C639 1000P C640 1000P C641 1000P C642 1000P C732 0.022 C647 1000P D738 MA165TA D730 MA4091HTA R768 100 R724 3.9K C718 16V100 D723 MA4150HTA R723 5.6K C719 0.047 R725 10 C724 0.047 C710 0.047 R546 18K R551 18K R552 47K R555 22K C550 0.01 D

41、552 MA165TA D555 MA4100MTA R547 18K E602 E601 R749 1K D739 MA165TA POWER SUPPLY CIRCUITC 11032456789 W701B 11032456789 R720 3.9K C734 50V3.3 D758 MA165TA C722 16V100 C720 0.047 C717 16V33 MAIN CIRCUITB G R765 220 N R569 10K D554 MA165TA C371 6.3V100 Q556 2SC5398RSTA SWITCHING R568 100 D553 MA700TA C

42、556 16V10 C555 16V10 Q557 2SA1995RSTA MOTOR DRIVE Q553 2SD2144STA MOTOR DRIVE R570 2.2M R560 100K C559 0.01 D581 RL1N4003N02 R567 22 FAN MOTOR JK551 R566 68K Q554 2SA1995RSTA SIGNAL LEVEL DET. M R719 3.3K Q703,704 2SD2137PQTA REGULATOR R796 2.2 Q703 Q704 R769 27 R727 3.9K C554 10V220 R561 100K C552

43、0.01 R559 4.7K R591 4.7K C551 50V2.2 D551 MA165TA 12 D583 RL1N4003N02 N R721 4.7 R722 2.2 AB R753 0.47 R754 0.47 Q711,712 2SB1548PQAU REGULATOR Q711 R797 2.2 R767 27 R558 2.2K D582 RL1N4003N02 Q712 : POSITIVE VOLTAGE LINE : NEGATIVE VOLTAGE LINE 29.2V :AUDIO SIGNAL LINE 29.2V14.7V 15.2V -30.1V -11V

44、-10.4V -11V -0.6V 14.1V 13.6V 9.6V 10.2V 10.4V -10.4V 14.7V 7.6V 7V 0V 7.6V 0.3V -10.4V -10.4V -10.4V 7.6V 7.6V 6.8V FAN ON:1.6V 0V FAN ON:0V 0.5V FAN ON:0V4.7V 0V 0.5V 8.1V 8.1V 30.1V 30.1V7.6V 7.6V 0V 10.4V 13.6V 10.4V14.1V 13.6V SCHEMATIC DIAGRAM-7 L601 2 1 3 4 5 6 7 8 9 10 11 12 2 1 3 4 5 6 7 8

45、R639 10 C621 0.1 E F D CP601 CP602 R641 10 A B IJ C C631 0.1 G ToAC IN CIRCUIT(CN601) on SCHEMATIC DIAGRAM-8 D ToAC IN CIRCUIT(CN602) on SCHEMATIC DIAGRAM-8 D Lch JK601 HF(6) LF(8) Rch JK602 HF(6) LF(8) A B C R651 10 C627 0.1 C629 0.1 C635 0.047 R649 10 L605 R642 10 C620 0.1 C630 0.1 R640 10 L602 C6

46、37 0.047 C636 0.047 R652 10 C626 0.1 C628 0.1 R650 10 L606 C632 0.047 SPEAKERS GND GND C OUT C OUT GND GND GND GND SUR L OUT SUR L OUT SUR R OUT SUR R OUT ECO SH SYNC SA SYNC D.GND BU5V RS13V +B NC ToPOWER TRANSFORMER(A) CIRCUIT(W722B) on SCHEMATIC DIAGRAM-8 W722A W721A 2 1 3 4 5 6 7 8 9 10 2 1 3 4

47、E F H D C G F E D E ToPOWER TRANSFORMER(A) CIRCUIT(W721B) on SCHEMATIC DIAGRAM-8 E S1 S2 S3 S4 AC1 CT AC2 S7 FL2 FL1 S1 S2 S3 S4 : POSITIVE VOLTAGE LINE : NEGATIVE VOLTAGE LINE:AUDIO SIGNAL LINE ToMAIN CIRCUIT (W721A) on SCHEMATIC DIAGRAM-7 ToMAIN CIRCUIT (W722A) on SCHEMATIC DIAGRAM-7 SCHEMATIC DIA

48、GRAM-8 C A D B T701 CN701 CN702 CN703 CN704 CN705 CN706 CN707 CN708 CN709 CN710 R793 1 CN601 C652 1000P C644 1000P C643 1000P C651 0.047 C646 0.047 C645 0.047 R ch L ch AC IN JK701 L701 F1 T2A T702 Z701 C791 1000P 31 24 RL702 R794 47K Q791 2SD2144STA RELAY DRIVE D745 MA4051MTA C753 0.01 C755 1000 Q7

49、26 2SC3940AQSTA REGULATOR D746 RL1N4003N02 D747 MA4068LTA C758 0.01 C759 10V47 C754 0.01 D500 MA165TA W2/W3 W1 CN602 R791 RSFMB50KT-L JK603 CENTER(8) SURROUND(8) R646 10 C624 0.1 C634 0.1 R644 10 L604 R645 10 C625 0.1 C633 0.1 R643 10 L603 DAC IN CIRCUIT 2 1 3 4 5 6 7 8 9 10 11 12 2 1 3 4 5 6 7 8 R777 1K R774 18 D711 RL1N4003N02 R773 18 R7122.2K A B C A C B R795 3.9K D743