Kenwood 4042A Service Manual - Page 4

A B C D E F G H I J EQ SW2 LAMP4 LAMP2 LAMP3 LAMP1 (GR) (OR) (GR) (OR) 1 R108 15 ON B D C E A R4 10K R54 10K R5 100K R55 100K GR R3 10K R53 10K OR SW3 LAMP R91 110 +B 1 2 3 4 5 6 7 8 9 R92 110 CD14A CN14 +B 1 2 3 4 5 6 7 8 9 2 CN4 R1 1K L 4 IC4 12.6V C2 ISO IC4(1/4) 4.7u50 + 3.4V 10 3.4V 9 4 8 10K R21 C3 100u25 3.4V R202 1.5K R201 +B R203 1.5K IC4(2/4) 3.4V 12 14 13 R204 +B C4 22u25 + C5 10u50 R205 + 4.7K 12.6V IC5(1/2) EQ AMP 5.0V 3 8 1 2 3.4V C11 22u25 + 4.7K R206 3 + 1.5K 3.4V 1.5K 4.0V R222 150K C51 C100 C101 C1 470P 0.1 0.1 470P R217 4.7K R216 560 C209 C208 1000P 0.1 16 R218 39K + 15 12 3900P 0.47u50 C207 C206 C205 C204 0.1 1u50 + 14 C203 C202 0.33 4.7u50 + 13 11 INPUT C53 R251 3.4V R254 100u25 1.5K 1.5K 3 R 2 + 10K R71 R51 1K 1 C52 4.7u50 + 3.4V 6 3.4V 5 IC4(4/4) 7 11 R252 1.5K 3.4V LAMP/ LED Q1 0.7V 0V 2 IC4(3/4) 1 3 3.4V R253 1.5K 3.3V DRV C97 10u50 0.7V Q2 1.4V + C96 220u10 2.7V R215 39K R214 4.7K R213 560 R212 33K R211 2.2K R210 150 R209 33K R208 2.2K R207 180 L H: ON P. CON 3 BATT 2 R81 R82 + 10K 4.7K 14.4V +B Q3 D2 13.5V +B +B 14.4V +B Q201 12.6V Q202 +B Q203 Q204 Q205 +B D1 C81 0.047 C82 470u16 + C83 0.022 R265 39K R263 560 R264 4.7K R262 33K R260 150 R261 2.2K R259 33K R257 180 R258 2.2K GND 1 C84 47u16 R83 2.2K 14.4V Q4 + 10K 10K CN15 G1 R85 1K 14.2V R86 C88 10K 330u25 D4 0V Q5 Q251 Q252 Q253 Q254 Q255 + 4 14.4V 10K D5 D6 R87 47K 10K R220 4.7K R219 680 C211 C210 270P 0.033 21 R221 33K R67 33K R17 33K R93 1.5K R7 R6 3K 270K +B C12 1u50 + C13 0.1u50 + Q8 R8 30K C14 1u50 + R10 10K R9 270K R20 1.5K 12.6V +B 3.4V 3.4V C15 2200P R11 1.5K 28 1 3 IC2(1/2) C16 22u25 3.4V + BUFF R12 22K R FADER F R13 R15 560 1K Q10 R14 10K R16 MUTE 1K R56 3K R57 270K C62 1u50 + R60 Q9 10K 30K R58 C63 0.1u50 + C64 1u50 + Q8,9 HPF SW +B R59 270K R70 1.5K 0V BUFF R62 22K Q11 R64 10K 5 4 IC2(2/2) C66 7 22u25 R63 560 3.4V 6 + 3.4V R61 1.5K 3.4V C65 2200P C92 12.6V 470P +B SUB 3.4V R96 ON 3.4V R84 220 6 6.8K 8 R97 7 3.3K 5 3.6V R124 1K R95 100K C91 3300P + C90 1u50 IC3(2/2) SW1 BUFF 34 35 36 C94 0.22u50 + R98 100K R99 100K C93 0.47u50 + R100 3.3K 3.6V 3.6V IC3(1/2) 2 C95 1 10u50 3 + 4 3.6V 0V BUFF R101 22K R102 560 Q12 MUTE Q12 R103 10K C150 0.01 R65 1K R66 1K R150 470 VR1 (2/2) R69 R68 11K 11K VR1 (1/2) R19 R18 11K 11K CN1 4 3 2 1 L FRONT R CN2 4 L 3 REAR 2 1 R CN3 4 3 2 1 L SUB R +B 41 R106 1.5K 44 R269 680 R270 4.7K C260 C261 0.033 270P 26 R271 33K R266 560 R267 4.7K C258 C259 0.1 1000P 25 R268 39K 42 C256 C257 0.47u50 3900P 31 24 + C254 C255 1u50 0.1 23 + 4.7u50 0.33 C252 C253 R272 150K R107 4.7K +B +B 31 34 35 36 41 42 44 10.0V 13.6V 22 + 0V R88 D7 R89 10 Q6 120K 8.9V C98 +B C89 33u50 + C85 R90 3.8K 13.6V Q7 0V 1 5.0V EQ AMP 22u25 + R104 820 26 25 24 23 22 21 +B R105 470 1 11 12 13 14 15 16 1000u16 12.6V R256 4.7K R84 + +B 3.4V IC1(1/2) 18K 1/2 VCC 58 7 3.4V C55 10u50 + R255 4.7K IC5(2/2) 6 7 4.0V 5 4 3.4V C61 22u25 + 21 123456 CN9 CN10 123456 12 3 CN11 CN12 456 1 234 CN13 5 6 C54 0V 22u25 D3 3.4V + 2 3 4 5 6 150Hz C87 100u25 + C86 470u16 + +B VR2(6/7) 15K(B) VR2(6/7) 15K(B) VR2(7/7) 20K(B) IC1 IC2,3 IC4 IC5 : NJM4580MD : NJM2068MD : NJM2060M : UPC4570G2 +B Q1 : 2SC4640(T.U) Q2 : 2SC1741A(R) Q3 : 2SC2060 Q4 : DTA114ES Q5 Q6,7 Q8-12 Q201-205,251-255 : DTC114ES : 2SA1782(T.U) : 2SC3327-A : 2SC2712(GR) D1,2 D3 D4-6 D7 : DSK10C-ET1 : MTZJ4.3A : 1SS133 : MTZJ5.1B LED1-5 : AY3802K LED6,7 : PY3822K SIGNAL LINE GND LINE +B B LINE 50 200 800 3.2K 12.8K 30Hz VR2(6/7) SUBWOOFER FREQ. VR2(7/7) SUBWOOFER LEVEL LED1 LED2 LED3 LED4 LED5 LED6 LED7 VR2(1/7) 2 VR2(2/7) 3 VR2(3/7) 4 VR2(4/7) 5 VR2(5/7) 6 6 NJM2068MD 2SC1741A(R) DTA114ES 2SC2712(GR) B UPC4570G2 5 NJM2060M 8 2SC2060 DTC114ES B EC E BC E 8 C 14 4 1 7 1 50 200 800 3.2K 12.8K KGC-4042A 7 CAUTION: For continued safety, replace safety critical components only with manufacturer's recommended •DC voltages are as measured with a high impedance voltmeter. parts (refer to parts list). Indicates safety critical components. To reduce the risk of electric shock, leakage- Values may vary slightly due to variations between individual current or resistance measurements shall be carried out (exposed parts are acceptably insulated from the instruments or/and units. supply circuit) before the appliance is returned to the customer. KGC-4042A