Kenwood-MA300-pwr-sm1 电路图 维修手册.pdf

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1、STEREO POWER AMPLIFIER M-A100/A300 SERVICE MANUAL 1997-6/B51-5321-00 (K/K) 3668 POWER AMPLIFIER POWER -ON OFF SPEAKERS (6-16) SPEAKERS (6-16) + - CONNECT WITH AV CONTROL CENTER FRONTCENTER RR + - CLL UNSWITCHED SW FRONT SURROUND WOOFER SUB SURROUND Knob (K27-2211-04) Escutcheon * (B07-) Indicator (B

2、12-0308-04) Panel * (A60-) Foot x2 * (J02-) Dressing panel * (A21-) Lock terminal board (E70-0046-05) Look terminal board (E70-0046-05) AC power cord * (E30-) Rectangular receptacle (E58-0018-05) Metallic cabinet (A01-3429-01) AC outlet * (E03-) Power cord bushing (J42-0083-05) How to power on unit

3、only. Connect a lead wire between P3 (GRY) and fuse holder (CN3 of F2) or (CN10 of F3), then push power sw. Illustration is M-A300. * Refer to parts list on page 16. 1p3p/19p22p 97.6.2 4:11 PM yW 1 RadioFans.CN 收音机爱 好者资料库 M-A100/A300 2 CONTENTS / ACCESSORIES Contents CONTENTS / ACCESSORIES .2 DISASS

4、EMBLY FOR REPAIR.3 ADJUSTMENT.4 PC BOARD .5 SCHEMATIC DIAGRAM .9 EXPLODED VIEW .15 PARTS LIST.16 SPECIFICATIONS .21 Accessories Parallel cord .(1) (E30-2857-05) AC plug adaptor .(1) (E03-0115-05) Use to adapt the plug on the power card to the shape of the wall outlet. (Accessory only for regions whe

5、re use is necessary.) 1p3p/19p22p 97.6.2 4:11 PM yW 2 RadioFans.CN 收音机爱 好者资料库 M-A100/A300 3 DISASSEMBLY FOR REPAIR . 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 x3 x2 x2 x2 x2 x2 1 1 1 1 1 1 2 2 1. Remove the 17 screws (1), then remove main PCB. 2. Stand the set with right side downward, then connect the GND

6、of the PCB (X07) (A/4) and the rear panel and the chassis with 2 alligator clips2. 1p3p/19p22p 97.6.2 4:11 PM yW 3 RadioFans.CN 收音机爱 好者资料库 M-A100/A300 4 ADJUSTMENT No.ITEM INPUT SETTINGS OUTPUT SETTING TUNER SETTINGS ALIGNMENT POINTS ALIGN FORFIG. q 1 r IDLE CURRENT| Connect a DC voltmeter across CN

7、11(L) CN12(R) CN15(CENTER) CN16(SURROUND) (X07-) Volume : 0 VR1(L) VR2(R) VR5(CENTER) VR6 (SURROUND) (X07-) (L, R) 17.6mV (CENTER, SUR- ROUND) 13.2mV q 1 r| Connect a DC voltmeter across CN11(L) CN12(R) CN13(CENTER) CN14(SW) CN15(SL) CN16(SR) (X07-) Volume : 0 VR1(L) VR2(R) VR3(CENTER) VR4(SW) VR5(S

8、L) VR6(SR) (X07-) (L, R) 17.6mV (CENTER, SW, SL, SR) 13.2mV IDLE CURRENT AUDIO SECTION (M-A300) AUDIO SECTION (M-A100) Turn on the unit for 5minutes before adjustment. 1p3p/19p22p 97.6.2 4:11 PM yW 4 ACEGIBDFHJ 2 1 3 5 7 4 6 Refer to the schematic diagram for the value of resistors and capacitors. P

9、C BOARD(Component side view) 56 1p3p/19p22p 97.6.2 4:20 PM y W 5 KLNPRTMOQS 2 1 3 5 7 4 6 Refer to the schematic diagram for the value of resistors and capacitors. PC BOARD(Component side view) 78 1p3p/19p22p 97.6.2 4:23 PM y W 7 X XXX X X X X () )( )( )( )( )( () () () () X X X X XX X D C B A 1 2 3

10、 4 5 6 7 8 9 10 12 17 16 15 14 13 11 R104 100 C106 220P C105 100 R103 220P C104 100 R102 220P 100 R101 C108 220P 100 R106 C107 100 R105 220P 14 GND(B) GND(+15V) 13 MUTE 12 SW POW. RET 11 SW POWER 10 DG 9 SRch 8 GND 7 SWch 6 SW OUT 5 GND 4 Rch 3 AG 2 AG 1 FRONT RELAY 11POWER RETURN12 5 8PROTECTION 9C

11、S RELAY 10 Cch 6GND 7 SLch AG 3 Lch 4GND 1AG 2 K2 C103 220P P1 0.01 C77 0.01 C45 0.01 C78 RETURN POWER PROTECTION MUTE CS RELAY FRONT RELAY SWch DG SRch AG SLch GND Cch GND Rch GND Lch 2.2K R177 4.7u50 C1 + R171 2.2K 47 R189 R183 R1 C7 680P 2.7K R19 2.7K R13 100K 47K 2K R25 100u10 C25 + 1 R73 C109 1

12、00P R7 13K C31 68P 10K R43 C37 47P 220 R31 1/4W 220 R37 1/4W C85 680P 22 1/4W R55 R61 47 C43 47u100 + 220u100 270 R49 C49 + 47K R67 1/4W 1/4W 1/4W 33P C127 R185 R179 2.2K R173 2.2K 680P 100K 47K 2.7K R15 2.7K R21 R27 1 R75 R3 C9 C27 100u102K R51 100P C111 1/4W 270 + 47 4.7u50 C3 + R191 C129 13K R9 4

13、7P C39 68P C33 47K R69 33P 1/4W 10K R45 1/4W R39 220 220 1/4W R33 680P C87 22P C117 R187 2.2K R181 R175 2.2K 22P C119 R77 1 R29 R17 C11 R5 47K 100K 680P 2.7K 2.7K 2K C29 100u10 R23 1/4W R53 C113 100P 270 + R71 47K C5 + 4.7u50R193 47 13K R11 C131 C35 68P R47 10K 33P 1/4W C41 47P 1/4W R35 220 1/4W R41

14、 220 C89 680P W83 W81 W82 R65 4.7K R63 100 1K R64 47u16 C48 + 47u25 C47 + 12 11 10 9 8 7 6 5 4 3 2 1 12 11 10 9 8 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 10 118 9 10 12 11 PROTECTION CS RELAY FRONT RELAY POWER RETURN POWER MUTE DRIVE GND +B GND B(+15V) -B SLch NF Cch NF Lch NF SLch - Cch - Lch - SLch +

15、Cch + Lch + SW POWER 7 R48 C132 R12 1/4W 33P 10K 13K 2.2K R182 R188 R176 2.2K 100u10 R78 1 C30 C114 R54 270 100P 1/4W + R6 100K 47K C12 680P 2.7K R24 R18 2.7K R30 2K + 47 C6 4.7u50 R194 C120 R72 47K C36 68P C42 47P 22P 8 SW POW. RET R184 6 11 12 10 8 9 7 R186 100K 2.2K R180 W52 5 3 4 1 2 W27 R174 2.

16、2K R178 2.2K 2.2K R172 680P 100K 47K 2.7K R14 2.7K R20 R26 22P C118 R76 1 C90 R42 R36 680P 220 1/4W 220 1/4W R28 R16 C10 R4 47K 680P 2.7K 2.7K 2K C28 100u10 R22 1/4W R52 C112 100P 270 + R70 47K 6 5 4 2 3 1 MUTE DRIVE -B GND +B +B(+15V) GND(+15V) 9 8 7 SRch NF SRch - SRch + 1/4W C4 + 4.7u50R192 47 13

17、K R10 C130 C34 68P R46 10K 33P 1/4W C40 47P 1/4W R34 220 1/4W R40 220 C88 680P 1 R74 R2 C8 C26 100u102K 220u100 + 47 R62 C46 R50 100P C110 1/4W 270 + C44 47u100 + 6 5 4 3 2 1 SWch - SWch NF SWch + Rch - Rch NF Rch + 47 4.7u50 C2 + R190 C128 13K R8 47P C38 68P C32 47K R68 33P 1/4W 10K R44 R56 1/4W R3

18、8 220 220 1/4W R32 680P C86 22 1/4W 47u16 C75 47u25 C74 + 1K R57 100 R58 4.7K R59 + R210 R209 22K 100K R207 220 R206 C203 22u25 R204 680 1W R208 27K10K 1W R211 4.7K 14 13 M-A300 M-A100 GND(B) GND(+15V) MUTE SW POW. RET SW POWER DG SRch GND(GUARD) SWch SW OUT GND(GUARD) Rch AG AG -CN3 X07-A/4 2/2 2/2

19、 -CN2 X07-A/4 2/2 -CN4 X07-A/4 2/2 X07-A/4 -CN1 X TU.K. AUSTRALIA NO R30 ABB. Y K PX U.S.A. COUNTRY DESTINATION UNIT No. 81 W27, 83 W52,82, NO YES C109,110, 113,114 EUROPEE GENERAL MARKETM CANADAP CHINAC X11-3770-71 MALAYSIAI NOYES1.5K X11-3773-00 X11-3770-21 X11-3742-91 X11-3740-51 X11-3742-71 X11-

20、3740-10 A , B C111, 112 NONO XAUSTRALIAX11-3770-72 MALAYSIA GENERAL MARKET COUNTRY X11-3773-01 X11-3770-22 X11-3742-92 X11-3740-52 M CHINA I C PX U.K. Y T NOYES X11-3742-72 X11-3740-11 UNIT No. EUROPE CANADA U.S.A. E P K DESTINATION ABB. W27, 81 W52,82, 83 YES NO 2K 114 C109- NO R30 M-A100 M-A300 C

21、YESYESNO A , BC 15V 15V 15V 15V -B +B 15V 15V +B -B +B+B -B +B -B +B +B 15V 15V 15V 15V15V 15V 15V -B -B +B +B +B -B +B+B 15V15V +B 15V -B -B-B -B +B+B +B +B +B 22.4V15.2V 15.8V 0V -11.4V -39.1V 0V -39.1V 0.6V 40.5V 41.1V -1.3V 0V 1.3V 1.3V -1.3V 0.6V 0V -39.1V 0V -39.1V -11.4V 0V 40.5V 41.1V 0.6V 4

22、0.5V 41.1V 1.3V 0V -39.1V -39.1V 0V -11.4V 0V -1.3V 3.9V -11.4V 3.9V 0V -11.4V 15.2V 0V -39.1V 39.1V 0.6V0V 1.3V -1.3V 40.5V 41.1V -11.4V 0V 15.2V -39.1V 0V 0.6V0V -1.3V 41.1V 40.5V 39.1V 1.3V -11.4V 0V 0.6V 0V 0V 40.5V 41.1V 39.1V -39.1V 1.3V -1.3V 15.2V22.4V 15.8V GND LINE SIGNAL LINE +B +B D14 C

23、J3 D7 Q1Q7 Q121 D1 Q13 Q19 Q25 PRE MUTE FLch DRIVE Q123 MUTE Cch D9 Q27 Q9Q3 Q21 Q15 DRIVE PRE D3 Q125 MUTE SLch D11 Q23 Q17 Q5Q11 DRIVE PRE Q29 D5 A D15 Q31 +15V AVR D16 CN9 CN6 SURROUND ch Q126 MUTE D12 Q6Q12 Q24Q18 Q124 MUTE SWch B Q122 D204 MUTE FRch DRIVE PRE Q30 D6 D10 Q22Q16 CN8 Q4Q10 DRIVE P

24、RE Q28 D4 D8 CN7 Q26 Q8Q2 Q20Q14 DRIVE PRE D2 D17D18 Q32 +15V AVR D203 Q203 SR ch MUTE DRIVER E4 A B SW PRE OUT ON/OFF SW PRE OUT E1 E3 E2WH1 WH2 WH2 M-A100M-A300 Q203 Q121-126 Q31,32 Q25-30 Q13-24 Q1-12 D204 D203 D15-18 D1-12,14 : 2SA1048(Y,GR) or 2SA1309A(Q,R) or : 2SC2878(B) : 2SC3940A(R,S) or 2S

25、D863(E,F) : 2SA1123(R,S) : 2SC2631(R,S) : 2SA992(F,E) : RD8.2ES(B2) or HZS8.2N(B2) or : 1SS131 or HSS104A MTZJ8.2(B) or UZ-8.2BSB 2SA933AS(Q,R) or 2SA1175(F,E) MTZJ3.9(B) or UZ-3.9BSB : RD3.9ES(B2) or HZS3.9N(B2) or MTZJ15(B) or UZ-15BSB : RD15ES(B2) or HZS15N(B2) or to C-V100/V150/ TERMINAL INPUT C

26、ch J1 V300/V350 (X11- ) (C/4) (X11-37XX-XX) (A/4) (X11- ) (B/4) M-A100/A300(K) (1/2) +B LINE -B LINE A 1 2 3 4 5 6 7 BCDEFGIKMOHJLN Y08-5610-10 M-A100/A300 CAUTION: For continued safety, replace safety critical com- ponents only with manufacturers recommended parts (refer to parts list). indicates s

27、afety critical components. For continued protection against risk of fire, replace only with same type and rating fuse(s). To reduce the risk of electric shock, leakage-current or resistance measurements shall be carried out (exposed parts are acceptably insulated from the supply circuit) before the

28、appliance is returned to the customer. The DC voltage is an actual reading measured with a high impedance type voltmeter with no signal input. The mea- surement value may vary depending on the measuring instruments used or on the product. 1p3p/19p22p 97.6.2 4:27 PM y W 9 X X X X X X X X XX X XX X X

29、X X FAN X X X X X X X X X X X X XX X X X X X X X IC1 B A D C 5 3 4 1 2 5 2 1 3 4 47 1/4W R107 47 1/4W R101 L1 100 R113 VR1 220 1/4W R119 2.7K 620 R125 C101 0.01 W201 C211 470 R131 1 2 10K R143 10K R137 10 1/4W 3.9 R149 C107 0.047 C113 R155 2W R133 470 100 0.047 C115 47 1/4W R109 220 VR3 R115 47 1/4W

30、 R103 1/4W R157 1 R127 3 4 5 1/4W 2 R139 1 2 620 C103 0.01 2W 10 3.9 R151 2.7K R121 42 5 1 3 L3 C213 C109W203 R145 10K 10K R135 470 100 47 1/4W R111 0.047 C117 220 VR5 R117 1/4W R105 R153 1/4W R159 R129 3 4 1/4W 5 2 1 10K 1 2 10K R147 620 C105 0.01 R141 10 3.9 2W 2.7K R123 2 5 4 1 3 L5 C111 C215 0.5

31、6 W205 560 2W R203 4.7K R204 10K R202 560 2W K1 K3 R201 XX X XX X X X X 1K R161 1K R163 R165 1K 4700P C125 4700P C126 4700P C123 4700P C119 2 1 4.7K R205 10K R206 R136 R134 X X 470 470 100 C118 0.047 47 1/4W R112 VR6 220 R118 R166 1K R106 47 R160 10 1 1/4W R130 3 5 1/4W 42 R148 10K 2 1 C106 620 0.01

32、 R142 10K 2W 3.9 R124 2.7K 42 5 1 3 L6 R154 100 47 1/4W 0.047 R110 C116 VR4 220 R116 R164 1K R104 47 1/4W R152 R158 1/4W R128 3 1/4W 4 5 2 1 10K 1 2 10K R146 C104 620 0.01 R140 10 3.9 2W R122 2.7K 2 5 4 1 3 L4 C112W206 X C216 X 560 2W R234 C110 K4 1 2 W204 X C214 X R132 470 100 47 1/4W 0.047 R108 C1

33、14 220 VR2 R114 R162 1K 47 1/4W R102 R156 1/4W 1 R126 3 4 5 1/4W 2 1 2 C102 620 0.01 2W 10 3.9 R150 2.7K R120 42 5 1 3 L2 K2 C108 X C212 X W202 X C120 4700P 10K 10K R144 R138 R232 XW207 4700P C122 4700P C124 W208 X XW209 X 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 10 11 8 5 6 7 2 3 4 8 1 9 6 7 3 4 5 1 2 1

34、K 1/4W R4 1 FLOP FLIP- AUTO RECOVERY LATCH SW 3 2 VOL.DET. OFFSET DET. 4 5 MUTE AC OFF DET. OVER LOADVCC ON 6 7 RELAY DRIVER VCC 8 2.7K R207 22u16 C201 + 0.022 C203 4.7u50 C204 + 33u50 C205 + 91K R209 8.2K R210 4.7K R213 4.7K R211 620 R212 220P C206 2.2K R216 10K R214 10K R215 1W 1K R208 220u10 C202

35、 + R222 10K 15K R217 10u50 C2 + 100 R3 10u50 C1 + 1K R2 R1 1.2K 2.2u50 C5 + R15 470K 4.7K R14 100K R16 10u50 C7 + R10 4.7K 10K R9 4.7K R12 100K R17 4.7u50 C8 + 4.7K R20 10K R19 R8 47u35 C6 + 1 2 3 0.01 C12 0.01 C9 0.01 C11 C10 0.01 470u50 C23 + R221 10K R220 10K R219 4.7u100 C307 + R302 2.2K R218 4.

36、7K 2.2K 1W R18 560 2W 3 2 1 3 2 1 22K R301 + - K5 C26 0.01 C27 0.01 C25 0.01 C24 0.01 C18 + C17 + - + C15 0.01 C14 0.01 C16 0.01 1 2 3 4 5 6 7 8 9 10 11 12 13 3 1 2 4 5 1 2 3 4 5 2 1 F4 CN30CN29 C306 0.010.01 C302 0.01 C303C305 0.01 0.01 C304 C20 0.01 J10 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 3 4 5 CN4C

37、N3 F2 CN10CN11 F3 K1 1 2 3 CN1CN2 F1 W W1 1 2 6800P C76 2 1 240V120V P6 BLU WHT P7 P5 YEL RED P4 BRN P8 P3 P2 POWER POWER RETURN POWER RETURN T. F. 6800P C301 T. F. VR1 Q101-112Q113-116 VR3 VR5 M-A100 M-A300 VR2 VR4 M-A300 M-A100 VR6 SL+SR 100W/3 +3 FL,FR,C100W/6 chK,P,M,Y 70W/6 E,T 70W/3 +3 FL,FR,C

38、,SW,SL,SRch 100W/6 Q3,8 Q6,7 X TU.K. AUSTRALIA TS1,2 ABB. Y K PX U.S.A. COUNTRY DESTINATION UNIT No. 105,106 Q101,102, 109,110 Q103,104, EUROPEE GENERAL MARKETM CANADAP CHINAC X07-2920-21 MALAYSIAI NO TRAITR4N S51-1518-05 A , B NO PROTECTION IND CS RELAY FRONT RELAY POWER RETURN POWER MUTE DRV -B GN

39、D +B GND +B(+15V) SLch NF SLch - SLch + Cch NF Cch - Cch + Lch NF Lch - Lch + -CN9 X11-A/4 1/2 X11-A/4 1/2 -CN6 X11-B/4 1/2 -CN8 -B PRE SW RELAY MUTE DRV GND GND +B +B(+15V) -CN7 1/2 X11-B/4 SWch NF SRch NF SRch - SRch + SWch + SWch - Rch NF Rch + Rch - PRE SW RELAY RETURN VV POWER POWER RETURN 1 2

40、3 1W 1u50 C207 + 33u35 C208 + 6.8K R223 X07-2923-00 X07-2912-91 X07-2912-71 X07-2910-10 TRAITR3N TRAITR4N Q107,108, TRAITR4P TRAITR4P TRAITR3P 111,112 C17,18 5600u63 0.33 C107,108, 0.56 111,112 C109,110,119,121, 123,213,214 NO NO C211,212, 215,216 0.56 YES C125, 126 R8 2.2K 1W 1.8K 1W 270 2W R232J1

41、NO YES J3 1A 125V T800mAL F4 250V YES NO 205,206 W201-202, NO W203,204, 207.208 YES W209 YES 123 C119,121, Q101-106 DESTINATION K T P ABB. Y M X CCHINA AUSTRALIA GENERAL MARKET MALAYSIAI PX U.S.A. EUROPE CANADA COUNTRY U.K. E X07-2923-01 X07-2920-22 X07-2912-92TRAITR4N X07-2910-11 X07-2912-72 UNIT N

42、o.C17,18 6800u63TRAITR4P Q107-112 0.33 C107- 112 0.56 TS1,2 S79-0020-05 2.2K 1W 1.8K 1W NO NO C125, 126 0.56 215,216 C211,212, 560 2WYES NO R232R8J1J3 W201- 206 250V T800mAL YES YES F4 1A 125V A , B NO YESNO 208 W207, W209 R308 47K 56K R305 220K R303 47K R306 10K R307 120K R304 J4 34V 34V 34V34V 34V

43、 26V 26V26V 26V +B +B +B -B -B -B +B -B +B -B +B -B +B -B -B +B -B +B -B +B -B +B -B +B -B +B -B +B -B +B -B +B -B +B +B -B +B +B -B 1 2 3 4 5 2 1 3 FAN POW. FAN GND C121 4700P WH6 WH5 (BLU) (GRY) T2.5A L 250V MALAYSIA CANADA GENERAL MARKET EUROPE DESTINATION COUNTRY AUSTRALIA CHINA PX U.K. U.S.A. P

44、 X11-3742-71 X11-3740-51 X11-3742-91 X11-3770-21 X11-3773-00 X11-3770-71X I C M Y E T NO X11-3740-10 ABB. K UNIT No.W1 YES YES NO YES NO F1 NO YES NO CN1,2J2 X11-3770-22 X11-3770-72 X11-3773-01 AUSTRALIA MALAYSIA CHINA X C INOYESNO X11-3740-11 X11-3742-92 X11-3740-52 X11-3742-72 KU.S.A. GENERAL MARK

45、ET U.K. PX EUROPE CANADA T Y M E P DESTINATION COUNTRYABB. UNIT No. NO YES YES NOYES NO F1W1CN1,2J2 0.56 0.56 0.56 0.56 0.56 E03-0337-05 E03-0316-05 E03-0109-05 E03-0305-05 E03-0316-05 E03-0305-05 E03-0325-05 E03-0305-05 E03-0337-05 E03-0325-05 E03-0316-05 E03-0305-05 E03-0109-05 E03-0316-05 E40-812

46、6-05 E40-4245-05 F50-0077-05 F05-4025-05 E40-4245-05 E40-8126-05 F50-0078-05 F05-6321-05 F05-6021-05 F05-5025-05 42.0V 1.1V 0.4V 0.3V -1.1V -42.0V 0V 0V0V 25.5V -42.0V -1.1V 0.3V 0.4V 42.0V 25.5V 0V0V 0V 1.1V 1.1V 0.4V 0.3V 0V 25.5V 0V0V 42.0V -1.1V -42.0V 42.0V 25.5V 0V0V 0V -1.1V -42.0V 0.3V 0.4V

47、1.1V -1.1V -42.0V 0.3V 0.4V 1.1V 42.0V 25.5V 0V0V 0V -42.0V -1.1V 0.3V 0V 0V 25.5V 42.0V 0.4V 1.1V 0V 0V 2.7V0.7V 2.2V3.3V 25.7V0V 25.7V 34.5V 25.7V 0V 34.5V 34.5V 26.4V 25.8V 0.7V 0V 0V 0V 0V 0V 0.7V 34.5VSPEED H:24V 0V 0.7V 0V 5.5V 0.8V 0V 0V 2.57V 0V0.7V SPEED L:12V 0V M-A100 (4CH) MODEL (CH) M-A

48、300 (6CH) SPEED LSPEED H MORE THAN 1.25V/6 MORE THAN 1.4V/60.821.4V/6 0.761.25V/6 47 1/4W 0V 0.01 C13 AC110-AC220- GND LINE SIGNAL LINE +B +B Q107 Q101 IDLE ADJ. D101 Q113 D107 CN11 D109 Q109 CN13 Q103 Q115 D103 D111 Q111 CN15 Q105 Q117 D105 D202 D201 Q201 A FL, SP. ON/OFF FL, C, SP TS1 THERMAL SW PROTECTION WH101 J1 J3 Q202 D112 B D110 Q112 CN16 Q106 Q118 D106 Q110 CN14 Q104 Q116 D104 D204 ON/OFF SR, SL+SR SP WH102TS2 THERMAL SW