Kenwood-GEQ-300-Service-Manual 电路图 维修手册.pdf

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1、GRAPHIC EQUALIZER G-EQ300 SERVICE MANUAL 1997-9/B51-5354-00 (K/K) 3669 TAPE ON/STANDBY EQ.EFFECT GRAPHIC/ PARAMETRIC MAIN POWER TAPEDISPLAY REVERSEFLAT MANU./REF. PAUSE PATTERN 123 F1F2F3 45MEMORYPOP./1ROCK/2JAZZ/3 BYPASSCARH.P.ST. FUSION/4CLASSIC/5MOVIE WIDE/NARROW EQ.LEVEL FREQUENCY JOG -ON OFF LI

2、NE INOUT R L R L TAPE PLAY IN REC OUT SYSTEM CONTROL AC OUTLET Front panel (A60-1354-08) Dressing panel (A21-3601-03) Display window (B10-2444-08) Level button (K29-6911-08) Top cabinet (A01-3548-08) Receptacle power socket * (E03-) D3.5 jack (E63-0186-08)x2 D3.5 jack (E11-0188-05) Nylon stopper (J4

3、2-0200-08) AC power cord * (E30-) Power button (K29-6916-08) Power button (K29-6910-08) Tape button (K29-6914-08) Function button (K29-6912-08) Frequency button (k29-6913-08) Shuttle knob (K29-6915-08) * Refer to parts list on page 16. G-EQ300 1P.INT(CIR 97.11.27 8:19 PM yW 1 RadioFans.CN 收音机爱 好者资料库

4、 G-EQ300 2 CONTENTS / ACCESSORIES CONTENTS / ACCESSORIES . 2 CONTROLS .3 PC BOARD . 5 SCHEMATIC DIAGRAM . 9 EXPLODED VIEW .15 PARTS LIST.16 SPECIFICATIONS .Back cover Contents Operation to reset The microprocessor may fall into malfunction (impossibility to operate erroneous display, etc.) when the

5、power cord is unplugged while power is ON or due to an external factor. In this case, execute the following procedure to reset the micropro cessor and return it to normal condition. What appears to be a malfunction may not always be serious. If your unit should not perform as expected, consult the t

6、able below to see if the problem can be corrected before seeking help from your dealer or service representative. In case of difficulty Please note that resetting the microprocessor clears the contents stored in, it returns the micro processor to the condition when it left the factory. While holding

7、 the MEMORY key depressed, press the MAIN POWER switch to on. Audio cord (2) (E30-2841-08) System control cord (1) (E30-2733-05) AC plug adaptor(1) (E40-9981-08) Accessories G-EQ300 1P.INT(CIR 97.11.27 8:19 PM yW 2 RadioFans.CN 收音机爱 好者资料库 G-EQ300 STANDBY indicator While standby mode is indicated, a

8、small amount of power is supplied to the system to back up the memory . In this mode, the system can be turned ON by remote control. 3 CONTROLS TAPE ON/STANDBY EQ.EFFECT GRAPHIC/ PARAMETRIC MAIN POWER TAPEDISPLAY REVERSEFLAT MANU./REF. PAUSE PATTERN 123 F1F2F3 45MEMORYPOP./1ROCK/2JAZZ/3 BYPASSCARH.P

9、.ST. FUSION/4CLASSIC/5MOVIE WIDE/NARROW EQ.LEVEL FREQUENCY JOG 3214 56879 0 ! # $ % &*() 2.5k3.9k6.3k10k16 k4006251k1.5k250406398160 EQ. ON MANUAL REFERENCE GRAPHIC PARAMETRIC F1F2F3 NARROWWIDE ? * * * * * * MEMORY -ON OFF Names and functions of parts 1 MAIN POWER key Switch the unit ON mode. 2 ON/S

10、TANDBY key Switch the unit between ON mode and STANDBY mode. 3 Standby indicator Lights up to indicate that a small amount of current flows in the unit. 4 PATTERN key Press to enter or quit the genre mode. 5 TAPE indicator Lights up when the TAPE key is pressed to ON. 6 PAUSE key Press to let an equ

11、alizer curve pause temporarily. 7 WIDE/NARROW key Each press of the key switches the curve slope alternately between WIDE and NARROW. 8 GRAPHIC/PARAMETRIC key GRAPHIC: Select this mode when adjust ing an equalizer curve. PARAMETRIC: Select this mode when creating an equalizer curve according to cent

12、er frequencies. 90EQ. LEVEL (UP) / (DOWN) keys Press the (up) or (down) key to increase or decrease the equalizer level. ! EQ. EFFECT key Press to turn the equalizer mode ON and OFF. TAPE key Use when playing back or recording a tape. # DISPLAY key Press to switch the display mode or to select the d

13、emonstration mode. $ REVERSE key Press to reverse an equalizer curve. % FLAT key Press to make an equalizer curve flat. MANU./REF. key Press to switch the manual and reference functions alternately. & Preset keys (1 to 5) Typical equalizer patterns have been preset under these keys so that you can s

14、elect any one of them easily. * MEMORY key Press this key when registering a user- created equalizer pattern. ( Genre keys Press in the genre mode to select the desired music genres and their equalizer patterns. ) Frequency keys (F1, F2, F3) Each key can store a desired center frequency. FREQUENCY J

15、OG knob Rotate the control knob to adjust the fre quency band (range). Indicators EQ. ONGRAPHIC MEMORYPARAMETRIC MANUALF1, F2, F3 REFERENCEWIDE/NARROW Graphic equalizer display Spectrum analyzer display Character display Character display Frequency display indicator Display G-EQ300 1P.INT(CIR 97.11.

16、27 8:19 PM yW 3 RadioFans.CN 收音机爱 好者资料库 G-EQ300 4 PARTS DESCRIPTIONS G-EQ300 1P.INT(CIR 97.11.27 8:19 PM yW 4 ABDFHJCEGI 2 1 3 5 7 4 6 1 81 80 100 50 51 31 30 8 1 16 9 16 16 9 9 8 8 1 1 1 11 IG O 1 13 1 13 EB BE BE BE BE BE BE BE BEBE BE BE BE BE BE BE BE BE BE BE BE BE BE BE BE BE BE BE BE BE BE BE

17、 BE BE BE BE BE BE BE BEBE BE BE BE BE BE B E BE BE BE BE B E BE B E B E B E B E B E B E BEB EBE B E BE BE BE BE BE BE BE BE B E BE BE BE BE BE BE BE BE BE BE BE BE B E BE BE BE BE BE BE BE B B E E BE Refer to the schematic diagram for the value of resistors and capacitors. PC BOARD(Component side v

18、iew) 56 G-EQ300(K) PCB/SD.INT 97.11.27 7:28 AM y W 1 KMOQSLNPRT 2 1 3 5 7 4 6 131 71 71 131 71 7 1 1 2 51 I G O EB O IG 1 1 14 15 28 1011 20 1 20 10 11 1 14 28 15 1 10 20 11 1 14 28 15 1 10 11 20 1 4 5 8 14 1 11 FREQUENCY JOG + + + + + + + + + + + + + + + + + + + + + + + + + + E E B B EB EB E B AC O

19、UTLET AC220 240V AC110 120V SYSTEM CONTROL OUTIN REC OUT PLAY IN TAPE LINE MAIN POWER Refer to the schematic diagram for the value of resistors and capacitors. PC BOARD (Component side view) 78 G-EQ300(K) PCB/SD.INT 97.11.27 7:29 AM y W 2 ABDFHJCEGI 2 1 3 5 7 4 6 DISPLAY PCB IC303 IC306 IC301 IC305

20、IC302 IC304 C CONTROL TAPE LED RESET W305 ZD305ZD304ZD306 W302 W301 CN304CN303 RESET AVR +5.6V AVR -5.6V D310 D311 D317 Q302 POWER LED CONTROL D315 B A DE D312 D313 D302 D301 ZD301 ZD302 Q394 Q393 Q301 ZD303 D303 D305 D304 DISPLAY FILTER IC D307 D306 MAIN u-COM D308 Q389 D309 DISPLAY FILTER IC SUB u

21、-COM Q322Q318Q317 Q395 Q334 Q305 Q303Q306Q307Q323Q324 Q392 Q321Q319Q320 Q309Q313Q308Q310Q312Q304Q311Q315Q314Q316 -5.3V +5.6V +5.6V+5.6V +5.6V -5.3V +4.8V +4.8V +4.8V +14.9V +4.7V+4.7V +4.7V +5.6V +5.6V+5.6V +5.6V -42V +5.6V -42V +5.6V -42V -42V -42V -42V-42V +4.7V +4.7V -42V +5.6V +4.7V +4.7V +4.7V

22、1K R359 C323 0.01 R307 10K +5.6V Q302 100Kx6100Kx6 100Kx6100Kx6 R313 100K R330 1K 39K R355 1K R314 100K C327 0.01 +4.8V +4.8V R345 27K 1K R344 93 92 31 32 10u50 C319 + 10u50 1 3 10 11 10K R338 10K R337 C321 47u63 + C320 + R339 2.7K R340 2.7K 0.1 C324 0.1 C325 + C315 10u50 93 92 88 87 R348 39K R347 3

23、9K R350 39K R349 39K R311 10K 37 35 36 34 32 33 31 0.01 C311 + C312 47u16 10 11 R351 100K X302 6MHz 6 7 R353 100K 5 3 7311 ST 7311 CLK 7311 DATA L IN R IN SYSCON SYSCON (8.16BIT SEL) (7311 ST) (7311 CLK) (7305 DATA) (7305 CLK) (7305 X301 6MHz KI1 KI2 KI3 KI4 KI5 KI6 KI7 ENCODER ENCODER 5.6V GND KO3

24、KO2 POWER KI7 KI6 KI5 KI4 KI3 KI2 KI1 KI0 KO0 KO1 TAPE 5.6V AC CENTER AC -42V GND B- B+ MUTE S 7305 DI 7305 CLK S) (7311 DATA) 7 4 44 45 43 42 12 11 3 10 B A 5 5 6 VEE 7 INH 9 CVSS 8 10 9 8 7 6 5 4 3 2 1 3 2 1 16 VDD4 1 14 15 2 13 1 0 6 3 2 COM 7 4 5 + C317 10u50 95 96 97 98 99 100 11 4 3 2 1 1 2 3

25、R354 100K R352 100K C316 10u50 + + 47u16 C302 3.9K R303 + C301 220u16 R302 3.9K 1/4W + 47u16 C303 R301 270 + 100u10 C306 1K R304 + C304 0.047F5.5 R306 1.2K 0.01 C305 100K R305 +4.7V +4.7V +4.7V+4.7V +4.7V -5.3V-5.3V +4.8V+4.8V +5.6V +5.6V +5.6V +5.6V +5.6V + C308 1u50 OUTIN GND 0.01 C307 R312 10K 0.

26、01 C309 R310 10K R308 100K 11121310987654321 C322 0.01 10K R309 2 37 36 35 34 33 32 31 30 87 88 33 34 35 121391011 36 37 40 41 6783451 +5.6V +5.6V +5.6V -5.3V -5.3V -42V -42V -15.1V -42V +5.6V +4.7V -5.3V +4.8V +4.8V 44 R320 1K 45 R319 1K G7B B4 B15 B5 G1B G3B G4B G5B G6B B1 B10 B2 B11 B9 G2B B6 B8

27、B7 B3 B12 B14 B13 49 48 47 50 54 53 52 51 S20/PC4 S18/PC2 S19/PC3 S24/PD0 S23/PC7 S22/PC6 S21/PC5 46 45 44 43 42 41 S16/PC0 S15/PB7 S13/PB5 S12/PB4 S14/PB6 S17/PC1 56 57 58 55 60 61 62 59 S30/PD6 S29/PD5 S28/PD4 S27/PD3 S26/PD2 VSS2 VDD2 65 64 63 69 68 67 66 S36/PE4 S38/PE6 S37/PE5 S35/PE3 S34/PE2 S

28、33/PE1 S32/PE0 S31/PD7 S25/PD1 40 39 38 37 36 35 (ENCODER IN)S10/PB2 SYSCON DATA S9/PB1 S7/PA7 S6/PA6 SYSCON SEND S8/PB0 34 32 33 31 S4/PA4 S3/PA3 S1/PA1 P72/INT2/TOIN P71/INT1 S2/PA2 P73/INT3/TOIN S0/PA0 S5/PA5 P81/AN1 P80/AN0 P86/AN6 P85/AN5 P84/AN4 P83/AN3 P82/AN2 CF2 VDD1 VSS1 CF1 XT2/P75 P87/AN

29、7 (ENCODER IN)S11/PB3 73 72 71 77 76 75 74 S44/PF4 S45/PF5 S43/PF3 S42/PF2 S41/PF1 S40/PF0 S39/PE7 80 79 78 82 V2/PL5 83 84 V1/PL4 COM0/PL0 81 S47/PF7 V3/PL6 S46/PF6 85 86 87 COM2/PL2 COM3/PL3 88 P30 P31 89 90 VSS3 COM1/PL1 91 P32(BACK UP) 92 93 P33 94 P35 95 96 P00 P34 11 RES 8 9 6 7 P14/SI1/SB1 P1

30、3/SO1 SUB ST P15/SCK1 P17/PWM0 P16/BUZ 97 P02 99 P03 98 4 5 3 P07 P05 1 P06 2 P04 P10/SO0 P01 P12/SCKO SUB CLK P11/SIO/SB0 SUB DATA P70/INT0 95 97 98 100 99 96 100 VDD3 XT1/P74 70 R325 G5A G6A G7A G8A G9A G14A G13A G12A G11A G10A A50 A20 A21 A22 A23 A24 A25 C1,2,3 G1A G2A G3A G4A A5 A4 A3 A2 A1 A14

31、A15 A16 A17 A18 A19 40 R324 1K 41 R323 1K 42 R322 1K 43 R321 1K 30 31 330 R315 R316 100K 37 36 35 34 33 32 21 20 19 100Kx8 AR316 R317 100K 330 R318 6 R328 1K 5 3 R329 26 25 24 23 22 R333 560 R334 560 R335 560 R336 560 R326 1K 7 R327 1K 13 1 CLK/2 VDD 2 OUT OUT CLKR 3 OUT CLKC 5 OUT L 6 OUT OUT GND R

32、 8 OUT OUT VSS 7 4 R346 1K R331 560 R332 560 7 6 5 4 3 2 1 16 15 14 12 11 9 10 VDD19 10 R VSS 9 8 OUT 2.2K R342R341 1.6K 1000P C314 A39 A40 A45 A13 A12 A11 A10 A9 A8 A7 A6 A36 A35 A34 A33 A32 A31 A30 A29 A28 A27 A26 R343 1M A38 A41 A42 A43 A44 A37 0.01 C332 1M 21 20 18 19 17 16 15 14 13 12 10 29 30

33、27 28 26 24 22 23 25 88 P31 87 P30 86 COM3/PL3 85 COM2/PL2 84 COM1/PL1 83 COM0/PL0 82 V1/PL4 V3/PL6 80 81 V2/PL5 72 S41/PF1 73 S42/PF2 74 S43/PF3 75 S44/PF4 76 S45/PF5 77 S46/PF6 78 S47/PF7 79 100 P05 99 P04 98 P03 97 P02 96 P01 95 P00 94 P35 93 P34 92 P33 91 P32 90 VDD3 89 VSS3 52 S23/PC7 53 S24/PD

34、0 54 S25/PD1 55 VDD2 56 VSS2 57 S26/PD2 58 S27/PD3 59 S28/PD4 60 S29/PD5 61 S30/PD6 62 S31/PD7 63 S32/PE0 64 S33/PE1 65 S34/PE2 66 S35/PE3 67 S36/PE4 68 S37/PE5 69 S38/PE6 70 S39/PE7 71 S40/PF0 18 VDD1 17 CF2 16 CF1 15 VSS1 14 XT2/P75 13 XT1/P74 12 RES 11 P17/PWM0 10 P70/INT0 (uCOM ST) 9 P16/BUZ 8 P

35、15/SCK1 7 P14/SI1/SB1 6 P13/SO1 5 P12/SCKO (uCOM CLK) 4 P11/SIO/SB0 (uCOM DATA) 3 P10/SO0 2 P07 1 P06 S21/PC5 51 S22/PC6 S13/PB5 44 S14/PB6 45 S15/PB7 46 S16/PC0 47 S17/PC1 48 S18/PC2 49 S19/PC3 50 S20/PC4 30 S0/PA0 29 P73/INT3/TOIN 28 P72/INT2/TOIN 27 P71/INT1 26 P87/AN7 25 P86/AN6 24 P85/AN5 23 P8

36、4/AN4 22 P83/AN3 21 P82/AN2 20 P81/AN1 19 P80/AN0 A49 A48 A47 A46 31 S1/PA1 32 S2/PA2 33 S3/PA3 34 S4/PA4 35 S5/PA5 36 S6/PA6 37 S7/PA7 38 S8/PB0 39 S9/PB1 40 S10/PB2 41 S11/PB3 42 S12/PB4 43 G2B G3B G5B G1B G1B B15 + C318 10u50 R357 2.2K 820 R356 B3 B3 AR314 B1 B5 B4 B1 B4 B5 AR315 B15 G7B G6B G6B

37、G7B G5B G4B G3B G2B G4B 14 2 OUT 4 OUT 3 CLK/2 11 L GND 12 5 OUT 7 OUT OUT 6 OUTCLKC 20 21 23 25 24 22 OUT 6 26 1200P C313 161 15 13 CLKR B13 B12 B14 B8 B7 B6 B11 B8 B7 B6 B11 B9 B10 B2 B9 B10 B2 AR312AR313 B13 B12 B14 ( ( ) ) ( ( ) ) ) () )( () )( )( )( )( )( () () () )( () )( () )( () () () )( )(

38、) () )( () () () () )( )( )( ( () () () () () )( ) ) () () () () () () () () () () ( ( ( ) ) ) ( ( ( )( () )( () ( ( ) ) )( ( ( ( ( ( ( ( ( ( ( ) ) ) ) ( ( ( ) ) ( ( ( ) ) ) )( )( ) ) ) ) ) ) ) )( )( )( )( )( )( () () () () () ( ( ) ) ( ( ( ) ) ) () () () () () () () () () () () () )( )( )( )( )( )(

39、 )( () () () () () () () () () )( )( )( )( )( )( )( )( )( )( ( )( )( )( )( )( )( )( )( ) )( )( )( )( )( )( ()() )( () () () )( )( )( )( )( () )( )( ) () () () () () () () () () () () () )( )( )( )( ( () () () () ( () () () () () )( )( () ( ( ) ) )( )( () ( ( ) ) () )( () ( ( ) ) ( ( ) ) )( ) )( )( )

40、( )( )( () )( )( )( )( )( )( )( )( )( )( )( )( )( )( )( )( )( )( )( )( )( 4.7V 4.7V 5.8V 4.8V 4.7V 5.4V 6.1V -6.1V -5.3V-10.4V -15.1V 14.9V -41.3V -38.2V H:4.3V L:0V ON:0V OFF:4.6V 5.4V 4.8V 4.7V -5.3V 5.4V 5.4V 4.8V 4.7V 4.7V 5.4V 4.9V G-EQ300(K) PCB/SD.INT 97.11.27 7:29 AM y W 3 TKMOQSLNPR Y09-461

41、0-10 G-EQ300 CAUTION: For continued safety, replace safety critical components only with manufacturers recommended parts (refer to parts list). indicates safety critical components. For continued protection against risk of fire, replace only with same type and rating fuse(s). To reduce the risk of e

42、lectric shock, leakage-current or resistance measurements shall be carried out (exposed parts are acceptably insulated from the supply circuit) before the appliance is returned to the customer. The DC voltage is an actual reading measured with a high impedance type voltmeter. The measurement value m

43、ay vary depending on the measuring instruments used or on the product. AI LINK F3F2F1 NARROWWIDE AI CCRS GRAPHIC PARAMETRIC REFERENCE AI AUTO AI MANUAL MEMORY EQ. ON MANUAL A C B G-EQ300(M) (1/2) FREQUENCY JOG Q394: 2SA933S Q303-333,335-388, IC301: LC867224A-5D35 DOWN SW410 F1 UP SW411 SW412 F2 SW41

44、3 F3 SW414 WIDE SW415 GRAPHIC SW416 W404 ED ENCODER S940 : LC867224A-5D36 : TC4051BP IC302 IC303 : MTZJ4.7B : FIP21BMW24 : MTZJ5.6B ZD304,305 FLT301 ZD306 : XR1091PIC304,305 : KIA7039PIC306 : 2SC1740SQ301 : DTC114ESQ302,389,395 : DTA124ES390,391 : KTA1271YQ334 : 1SS131 : MTZJ6.2BZD301,302 : MTZJ2.7B

45、ZD303 D301-313,315,317 Q393: KTD2058Y 5 14 32 MEMORY SW422 SW421 SW420SW417 SW418 SW419 G F G F POWER SW403 SW405 PATTERN TAPE SW404 MANUAL SW406 SW407 REVERSE SW408 PAUSE FLAT SW409 W403 LED402 LED401 SW402 DISPLAYEFFECT SW401 Q392: KTC3227Y POPULAR CLASSIC SW426 MOVIE ROCK SW423 W506 SW424 JAZZ SW

46、428 FUSION SW427 SW425 W505 Q377Q376Q378Q381Q382Q379Q380Q385Q386Q383Q384Q375Q374Q387Q388 Q355Q371Q325Q326Q351Q352Q353Q354 Q373Q372Q332Q333Q335Q336Q337Q338Q340Q346Q347Q339Q344Q343Q345 Q368 FLT301 Q366Q367Q356Q357Q358Q370Q369Q390Q391Q349Q348 Q328Q330Q329Q327Q341Q342Q331 Q350Q363Q364Q365Q361Q362Q359Q36

47、0 16K6.3K10K2.6K3.9K1.6K6261K400160260986340 -42V -42V -42V +5.6V+5.6V -42V +5.6V +5.6V -42V +5.6V 10K 10K +4.8V -42V-42V +5.6V -42V -42V +5.6V -42V +5.6V -42V +5.6V +5.6V +5.6V +5.6V +5.6V -B +B SIGNAL LINE GND LINE MAIN PCB -CN101 2/2 R401 1456789101112313 10K R404 C401 0.01 10K R403 0.01 C402 R40

48、2 2/2 2/2 MAIN PCB KI3 KI2 KI1 KI6 KI5 KI4 KI7 ENCODER GND KO3 5.6V ENCODER KO2 KI7 LED KI4 KI5 KI6 POWER KI1 KI2 KI3 KO0 KI0 KO1 VCC +5V TAPE LED A COM B 100Kx6100Kx6 100Kx6100Kx6AR309 100Kx6100Kx6 100Kx6100Kx6100Kx6100Kx6 TRANSFORMER -CN102 POWER KI2 KI3 KI6 KI1 KO1 KO0 KI01 2 3 4 5 6 7 OUT OUT 3 1 12345678910 A20 A18 A19 A15 A16 A17 A14 1312112 680 R406 270 R407 KI6 7 KI5 KI4 54 KO2 KI3 KI2 213 KI7 6 KI0 KO0 KO1 KI2 KI1 KI3 KI6 7654321 2 1KI2 KI3 4 6 5 KI4 KI7 KI5 KI67 KO23 G5B G6B G7B B15 B4 B5 B1 B2 B10 B