Kenwood-XS300-tape-sm 电路图 维修手册.pdf

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1、STEREO CASSETTE DECK X-S300 SERVICE MANUAL 1997-6/B51- 5325-00 (K/K) 2147 STEREO CASSETTE DECK X-S300 POWER O.T.E.1 0 8 23 CCRS COUNTER RESET REV. MODEREC LEVEL DOLBY - ON OFF 7 R L REC IN PLAY OUT SYSTEM CONTROL AC 110 - 120V AC 220 - 240V LINE Knob (K27-2211-04) Knob assy (K29-6676-04) Escutcheon

2、(B07-2344-02) Knob assy (K29-6678-04) Panel (A60-1148-11) Power cord bushing (J42-0083-05) Knob (K29-6680-02) Panel assy (A29-0869-03) Front glass (B10-2356-12) Knob (K29-6680-02) Phono jack (E63-0136-05) Miniature phone jack (E11-0293-05) Slide switch (S62-0001-05) AC power cord * (E30-) * Refer to

3、 parts list on page 13. X-S300(k) COVER( 98.4.24 9:15 AM yW 2 RadioFans.CN 收音机爱 好者资料库 X-S300 2 CONTENTS / ACCESSORIES Accessories CONTENTS / ACCESSORIES .2 ADJUSTMENT.3 PARTS DESCRIPTIONS .4 PC BOARD .5 SCHEMATIC DIAGRAM .7 EXPLODED VIEW .11 PATS LIST .13 SPECIFICATIONS .17 Contents Audio cord .(2)

4、(E30-0505-05) System control cord.(1) (E30-2816-05) * AC plug adapter .(1) (E03-0115-05) Check that the following accessories are present. * Use to adapt the plug on the power cord to the shape of the wall outlet (Accessory only for regions where use is necessary.) X-S300(k) COVER( 98.4.24 9:15 AM y

5、W 3 RadioFans.CN 收音机爱 好者资料库 R L REC IN PLAY OUT SYSTEM CONTROL AC 110 - 120V AC 220 - 240V LINE Oscilloscope AC voltmeter Frequency counter AC voltmeterAG (A)(B) X-S300 3 ADJUSTMENT NO.ITEMINPUT SETTING OUTPUT SETTING CASSETTE TAPE DECK SETTING ALIGNMENT POINTS ALIGN FORFIG. Unless otherwise specifi

6、ed, set the respective switches as follows: 0dBs = 0.775V TAPE : NORMAL DOLBY : OFF I Cassette mechanism unit (Adjustment of the REC / PLAY head) (1) Demagnetization and cleaning Power : OFF Demagnetization, cleaning, PLAY Recording head, erase head, capstan pinch roller Demagnetize the REC / PLAY h

7、ead with the head eraser. Clean the REC / PLAY head, erase head, capstan and pinch roller using a cotton swab slightly damped with alcohol. (2) Azimuth of the REC / PLAY head SCC-1727 TCC-153 MTT-114 10kHz, -10dB (B)PLAY Adjust the output to maximum and adjust the azimuth adjustment screw for the Li

8、ssajours waveform pattern of the oscilloscope to become close to a 45 straight ling. II PC BOARD ADJUSTMENT (1) TAPE SPEED (NORMAL) TCC-110 MTT-111 SCC-1727 3kHZ (B)PLAYVR7 Adjust the tape speed so that 3kHz is obtained at the center of the tape. III PC board adjustment. (1) PLAYBACK LEVEL MTT-150 4

9、00Hz (B)PLAY VR 1 (L) VR 2 (R) Adjust the playback output to 1dBs. MTT-256, SCC-1727 315Hz Adjust the playback output to 4dBs. MTT-256U, TCC-120 315 Hz Adjust the playback output to 0 dBs. (2)BIAS CURRENT (A) Adjust the AG for the output of the DECK to become 12.5KHz 20dBs. 400Hz/12.5kHz (AC-224) (B

10、)REC PLAY VR 3 (L) VR 4 (R) Record 400Hz and 12.5kHz alternately, and adjust the bias current adjustment potentiometer for the playback levels to become the same. (3) RECORDING LEVEL (A) Adjust the AG for the output of the DECK to become 1kHz 20dBs. (B)REC PLAY VR 5 (L) VR 6 (R) 20 dBs Measurement E

11、quipment Connections RVSFWD X-S300(k) COVER( 98.4.24 9:15 AM yW 7 RadioFans.CN 收音机爱 好者资料库 X-S300 4 PARTS DESCRIPTIONS X-S300(k) COVER( 98.4.24 9:16 AM yW 8 ACEGIBDFHJ 2 1 3 5 7 4 6 Refer to the schematic diagram for the value of resistors and capacitors. PC BOARD(Component side view) 56 X28-2892-70:

12、 TE X28-2940-20: MI X28-2940-71: XC X-S300(K) PCB/SD( 98.4.24 9:23 AM y W 2 ABDFHJCEGI 2 1 3 5 7 4 6 18 17 16 15 14 13 12 10 PROTECTION CIRCUIT THARMAL DETECTING POWER SOURCE STABILIZING +15V DET. ABSO. DET. PEAK DET. ABSO. 1 2 3 DET. PEAK 4 VCA 11 DRIVER PRE 7 VCA COMPARATOR 5 6 GND 8 9 () () )( )(

13、 )( )( )( )( )( )( )( () () () () )( )( )( )( () () () () () () )( 1.0V 2.0V 1.0V 2.0V 0.4V11.8V 0.4v MECHANISM ASSY (D40-1563-05) K1 10 1/4W R147 R149 22K R148 22K C146 5600P C145 5600P C144 0.01 10 1/4W R146 100u16 C143 + 1 2 34 5 6 C147 0.01 L7 1 2 3 4 5 Rch GND Lch GND EH C2 560P R1 150K C1 560P

14、 C5 390P 10u16 C14 + C16 3900P3900P C15 6.2K R5 150KR6 62 R4 62 R3 R2 150K 1.5K R12 4.7u35 C12 + C6 390P100u10 C3 + 100u10 C4 + R10 1.8K C10 0.033 100u16 C139 + C140 0.01 C8 0.022 0.022 C7 150K C11 4.7u35 + 1.5K R11 R9 1.8K C9 0.033 6.2K R8 R150 C13 10u16 + 1 2 3 4 + - 8 7 5 6 - + 0.022 C53 C54 5 4

15、2 1 3 C55 0.01 C56 0.01 33K R27 220P C49 15K R29 15K R30 L3 360K R25 680P C47 C45 150P 10P C141 4.7u35 C136 + 33K R28 5 4 L4 1 3 2 C50 220P 360K R26 680P C48 150P C46 10u16 C142 + 0.01 C51 C52 0.01 VR3 47K(B)47K(B) VR4 R144 10K 4 7 8 6 5 3 2 1 13 10 9 11 12 14 15 16 51K R161 100u10 C63 + 2.2u50 C61

16、+ R155 82K 120K R154 68K R159 91K R160 110K R156 R158 220K 82K R157 56K 100K R153 R152 R151 47K R162 24K 47K(B) VR6 + 1u50 C60 + 2.4K R36 R38 3.9K 3.9K R37 R35 1u50 C59 + 2.4K C149 1u50 + C150 1u50 + C44 L6 10mH 10u16 R24 R23 + 220P 220P C43 L5 10mH 5.6K R34 C62 2.2u50 + 100u10 C64 VR5 47K(B) R223 4

17、.7 1/4W 10u16 C148 + 5.6K R33 C41 10K R32 10K R31 GP GL GH Iref VCC IN OUT F/Q FQ FM GND GND OUT IN 15K R 15K10u16 C42 + NORCrO2 13 14 15 10 11 12 4 7 9 8 6 5 3 2 1 17 16 18 19 21 20 27 24 22 23 25 26 28 29 30 1.5K 18K 3.9K 0.1u50 + O.1u50 + 1u50 + C31 2200P + 0.1u50 0.1u50 C32 2200P 4.7u35 C20 + 10

18、K R40 16 VDDVSS 13 14 15 10 11 12 CS2CS1 STBGND DATA 9 CLK 1 3 2 4 5 7 6 8 12K R48 + 4.7u35 R19 560 R13 22K C27 C29 4.7u35 C39 + 10K R39 12K + 10K R140 10K R139 1000P C22 R18 1.5K C26 6800 2200P C28 2200P C30 R20 560 22K C34C33 C35 C37 C36 4.7U35 C38 + R142 R17 R21 2000P C17 R141 4.7u35 C23 + 5.6K R

19、15 4.7u35 C19 + R186 47K R187 47K R188 47K 1u50 C68 + 10K R49 12K R47 100K R45100K R46 1u50 C67 + R224 4.7 1/4W 6800P C25 R22 3.9K 4.7u35 C40 + 4.7 R143 VR1 10K(B) C21 1000P 10u16 C155 + 10K(B) VR2 5.6K R16 7 6 5 8 1 4 3 2 - + + - 321 46 3 2 4 1 6 100u16 C151 + 0.01 C152 2200P 1u50 C18 + 4.7u35 C24

20、+ 4.7u35 C154 + 22u16 C153 REC IN PB IN 1/2Vcc LINE OUT REC OUT L1 L2 R14 R41 27K R43 27K R44 27K 1u50 C65 + + R73 3.9K R71 3.9K R74 3.9K R171 100K R168 330 R169 100K R170 330 R72 3.9K 4 7 R OUT VCC 9 DET 8 GND R IN 6 L IN 5 DET 3 NC L OUT 2 1 1 2 3 4 5 1 GND 7 4 VZ1 OUT 2 VR 3 CLOSE OPEN 5 VCC1 6 V

21、CC2 8 OUT VZ2 9 10 10 R167 33K R178 10 R221 R182 3.6K 1K R183 R184 10 10u16 C159 + R177 10K R176 10K 11 12 R166 4.7K 6 7 0.47u50 C162 43 42 44 R55 5.6K R53 39K 10K R51 2.2K R52 R57 39K R54 5.6K R56 10K R58 4.7u35 C71 + 1u50 C69 + 2.2K 4.7u35 C72 + 1u50 C70 + 2200P C58 2200P C57 R163 5.6K 470 R66 75

22、74 100 R68 R67 100 22K R69 R65 470 22K R70 R172 100K 100K R173 C163 220P C164 220P 0.01 C165 10 1/4W R185 45 MOTOR - MOTOR + CLOSE GND OPEN 34 35 36 37 470 R63 R64 470 4.7 R225 C137 0.01 180 R145 VR6 SBUSY SDATA + 10u16 C156 Q36-43 R165 4.7 1/4W 10u16 C160 + C161 0.1u50 +14V +14V +9V +9V VDD VDD VDD

23、 VDD R222 4.7 1/4W +14V VDD 10K R50 VDD+14V +14V VDD 38 8 10 9 5 270K R174 16 27 28 4700P C157 1K R175 1/4W 1/4W 39 R190 100 R189 40 100 41 5.6K R164 17 P1 +B +B +14V +B +14V +14V+14V +14V +14V +5V +14V +12V +14V +12V +B +14V +14V +5V +12V +5V +B +B +14V+14V +12V +12V+12V VCC VCC VCC VCC VCC VCC +B

24、+14V VCC +14V +B +B +B+B +B VDD +14V+14V VDD VDD +5V+5V +12V Rch(-) BLK Lch(-) BLK WHT Lch(+) E(+) YEL Rch(+) RED 1.5K (B) (A) (+) (-) 5 4 2 3 1 (-) (+) 5 4 2 3 1 COMMON CLOSE OPEN OPEN COM CLOSE MOTOR+ MOTOR- 1 2 3 4 5 6 7 8 9 10 15 14 13 12 11 NC NC PACK RVS REC SDL- PHOTO OUT MOTOR A MOTOR B +12V

25、 COM GND MOTOR- CrO2 PHOTO CATHODE PLAY FWD REC EH E6E7 1K 0.022 1/4W 1/4W 11.8V REC: 5.2V PLAY: 0V 1.4V 9.2V 0V 12.9V 0.9V 1.4V 13.5V 0V 4.9V 4.9V 0.9V R7 REC: 7.1V 13.4V REC: 5.2V PLAY: 0V 1.6V 13.4V 13.4V 0.6V 2.4V 1.1V 4.4V 0.6V 4.4V 0.6V 2.0V 13.4V 0V PLAY: 13.5V REC: 0V 0.6V 13.4V 1.2V 6.8V 6.

26、7V 13.5V 6.7V 6.8V 6.8V 6.8V 6.8V 6.8V 1.9V 1.9V1.8V 0.3V 6.8V DOLBY OFF: 0V B: 6.7V C: 12.5V 1.3V 6.8V 1.2V 13.4V PLAY: 4.0J REC: 0V REC: 4.5V PLAY: 4.1V REC/PLAY : 0V STOP: 3.9V DOL B:5.3V C:0V OFF:5.3V ON:0V DOL 5.3V REC:0V PLAY: NOR: 5.2V CrO2: 0V REC: 5.3V PLAY: 0V REC: 0V PLAY: 10.4V REC: 7.9V

27、 PLAY: 0V 13.5V 7.2V 5.2V CLOSE: 8.1V CLOSE: 6.4V 11.8V REC: 6.3V PLAY: 0V OPEN: 6.6V OPEN: 8.1V 6.6V 4.3V 0V 5.2V6.8V NOR : 0V CrO2 : 1.3V : 1.3V : 0V CrO2 NOR NOR: 5.2V CrO2: 0V NOR:0V CrO2 : 5.2V REC: 4.5V PLAY: 4.1V REC: 7.3V 8.2K R180 6.2K R181 15K R179 R42 27K 1u50 C66 120u : 0V 70u : 5.2V REC

28、/ PLAY : 5.0V STOP :0V C: 11.4V B: 6.6V DOLBY OFF: 1.0V GRN YEL ORG BRN RED 6.8V 6.7V 6.7V 6.7V 6.7V 6.7V 6.7V 6.7V 6.7V 6.7V 6.7V6.7V 6.7V 6.7V 6.7V 7.3V 7.3V : 5.0V PLAY: REC: : 0V 13.5V BLK E(-) DIGITAL LINE GND LINE SIGNAL LINE +B -B BIAS OSC Q25 Q26 D45 CN6 L-CH R-CH MUTESW 70u/120u D44 AMP PB

29、Q15 Q13 Q14 L-CH HX-PRO BIAS-R R-CH BIAS-L IC3 F/Q FM GP GL GH REC R REC L REC MUTE (Lch) REC LEVEL REC LEVEL (Rch) REC EQ Q23 Q29 Q28 MPX OPE AMP PB-R R-CH L-CH PB-L MPX IC DOLBY E.VOL (REC LEVEL) ON/OFF AUTO BIAS Q44 R/P MPX CONTROL LOG AMP MUTE OFF/B/C PLAY OUT REC IN D12 TRAY DRIVER Q38Q39 Q36 Q

30、40 Q41 Q42 Q43 Q32Q33Q34Q35 Q30 Q17Q18 Q19 Q20 D56 D57 ON/OFF REC RELAY Q27 J1 D46 D47 D51 D50 D49 D48 LINE OUT MUTE DRIVER D54 D55 Lch Rch Rch Lch D11 BIAS CONTROL SYSTEM CN5 IC11 (1/2) (2/2) IC11 Q24 DRIVER MUTE Q31 FWD REC RVS REC PACK PLAY CrO2 SOL. PHOTO REFLECTOR MOTOR ERASE HEAD Lch Rch R/P H

31、EAD LIMIT SW M IC8 (1/2) (2/2) IC8 Q16 SW EQ REC J2 Q37 IC9 IC4 IC2 IC5 IC6 RECORD/PLAYBACK (X28-2XXX-XX) (A/7) +B LINE -B LINE 2SC3246 2SC3940A 2SD863 2SD20122SC2785DTA124ESA DTC124ESA UN4112 2SC1740S 2SC2458 2SA1535A 2SD2061 UN4212 2SC3311A CXA1198APTC9413PBA6138BA6209HA12170NTBA10393 UPC1297CA NJ

32、M4565L-D X-S300(K) PCB/SD( 98.4.24 9:23 AM y W 3 () AC5.0VAC25.2V FWD REC PLAY GND CrO2 COM GND +12V MOTOR B MOTOR A PHOTO OUT SOL RVS REC PACK METAL NC MOTOR- () () () () () () )( )( )( )( )( )( X )( )( ) ) ( ( )( )( )( () () () )( )( )( )( )( )( )( () () () () () () () () () () () () () () () () (

33、) () () () () () () () )( )( )( )( () () () () () )( () )( () () () )( () () () () () () () () () () () () () () () () () () () () () () () () () )( () () )( )( () () X () () () () () () () () () () () () () () () () () () () () () () () () )( () )( () () () () () () () () () () () () () () )( )( )(

34、 )( )( )( )( () )( () PACK SW 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 NC NC LEVEL L LEVEL R CE RESET X1 X2 GND DOL OFF DOL B/C DOL R/P MPX ON NOR/OSC NOR CrO2 CrO2 SW FWD REC INHB PLAY SW CAP M SOL S DATA S BUSY NC(VDD=5V) VDD(5V) Vfdp(-30V) G8

35、 G7 G6 G5 G4 G3 4 3 2 1 1u50 C128 + 1K R134 R118 680 R135 10K R119 47K R120 1K R121 1K 1W 10u50 C129 + + - C127 10u16 + R126 10K R133 100K 10K R132 R130 47K 4.7K R129 R128 47K 4.7K R127 77 100K R110 470u6.3 C116 + 47u25 C114 + 47u35 C115 + 56K R109 47u16 C107 + R104 330 47u25 C109 + C106 R101 5.6KR1

36、02 5.6K 4.7 R100 R227 1K R108 330 C111 1000P R107 10K R106 10K R112 10 100u10 C118 + 10u16 C117 + 100u16 C113 + 47u16 C112 + R111 1K 4.7 R105 3300u50 C105 + 100u100 C122 + 47u50 C121 + R115 100 R113 22K R114 100 47u100 C123 + R116 22K R117 10 47u35 C124 + 47u35 C125 + C102 0.01 C103 0.01 R220 4.7 C1

37、01 6800P 1 2 3 4 5 11 12 13 14 15 10 7 8 9 6 41 REC RELAY BIAS ON/OFF 47 44 42 43 45 46 BIAS 1 BIAS 2 BIAS 3 SEG N 50 48 49 51 52 SEG M SEG G SEG F SEG H SEG C SEG P 53 54 55 56 57 58 SEG D SEG R SEG E SEG J SEG K SEG B 59 60 61 62 63 64 SEG A SEG S SEG T SEG U G1 G2 24 NC NC NC KR2 KR1 KR0 NC(OPEN)

38、 AVR OFF LINE MUTE REC MUTE LED PHOTO 18 21 22 23 19 20 15 16 17 13 14 CLOSE SW EVOL CLK EVOL STB EVOL DATA TR OUT TR IN REC INHB METAL SW NC(OPEN) OSC OUT RVS 10 11 12 7 9 4 5 6 1 2 3 1 2 40 45 44 43 42 41 100 100 100 R197 R201 100 R202 100 R203 100 R217 R138 560 R209 1K 1K 1K 47K R213 R212 R214 R1

39、98 C100 6800P 9 10 8 6 R191 100C110 0.01 27 28 C138 0.022 R216 5 6 R124 110K R125 100K R122 22K 1 3 2 1000P 100u16 C108 + 1/4W 1/4W 1/4W 2W 0.01 C166 1/4W W122 120V240V T.F WH4 WH5 (M) (C) (X) (T,E) : AC110-120V/ 50/60Hz : AC220V 50Hz : AC240V 50Hz : AC230V 50Hz GND OUTIN 76 R123 150K 8 4 7 R131 10K

40、 10u50 C120 + 10u50 C119 + 1 2 3 4 5 6 7 8 9 10 33 19 18 17 16 15 14 13 12 11 23 27 29 28 25 26 24 21 22 20 32 30 31 R194 R195 R196 10047K R200 47K100 R199 7 47K R207 R205 47K R206 100 100 R204 12 11 17 16 C135 100P C134 100P 100P C133 20 18 47K 47K 19 21 47K 47K R215 R210 R211 47K 39 38 37 36 35 34

41、 47K R218 R219 47K X1 8MHz R192 100 R193 100 65 66 67 68 69 70 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 74 75 77 78 79 80 3 2 1 5 14 CP1 47Kx6 R226 1K 19 20 21 18 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 R208 560 100u10 C132 + 0.01 C158 0.01 C104 R13

42、7 10K 82K R136 VR7 10K(B) 14 80 78 79 1 2 3 14 +14V +5V +12V +5V +5V +12V +5V +B +B+B +B +B +5V+5V -B-25V -25V-25V -25V +14V +14V +12V +12V +12V +12V +12V +12V +5V +5V+5V +5V+5V+5V +5V 220-240V S N S M S G S F S H S C S P S R S E S D S J S K S B S A S S S T S U G1 G2 G3 G4 G5 G6 G7 G8 KR2 KR1 KR0 OT

43、E-LED +5V POW-LED F2 F1 4 1 3 2 X TU.K. AUSTRALIA W122 ABB.COUNTRY DESTINATION X28-2892-70 X28-2940-71 X28-2940-20 UNIT No. YES NO NO S17 NO YES YES EUROPEE GENERAL MARKETM CHINAC 1/4W 1/4W OPEN SW 21 11 KR1 7 POW-LED F11 F22 3 KRO OTE-LED +5V 5 4 6 G6G6 11 KR2 G8G89 8 G7 10G7 G5 12G5 G3 G4 13 14G3

44、G4 S T S U G1 G2 15 16G1 G2 17 18S T S U S K S B S A S S19 20S A S S 21 22 S B S K S R S E S D S J S D24 23S J 25S E S P S C S R S P27 26 28S C S H S F S G S M 29 30 S H S F 31 32 S G S M S N33S N n p m e S P f g c j h d r kb 5 1 F F 3 2 NP 4 SEG M SEG NS N S M S H 6 SEG GS G S F 7 SEG F S C 8 SEG H

45、 9 SEG C 3 2 5 4 6 s 3 2 5 4 6 10 SEG P 11 SEG R S R 12 SEG D SEG E S D S E 14 13 SEG JS J SEG S S S 16 15 SEG B SEG K S B S K 17 SEG AS A 19 18 SEG TS T 20 NP SEG U 33 1 2 1 2 34 5 4 5 4 s (d b) NP 22 NP 24 23 NP NP 25 NP 27 26 NP NP 29 28 NP NP 30 NP 32 31 NP 33 NP NP r bc s de t fgmh 37 35 NP 36

46、NP NP NP 38 NP 40 39 NP G2G2 42 41 NP NP 43 45 44 G3G3 46 G5 G4G4 G5 pjk u n 50 48 47 G6G6 49 G8 G7 G8 G7 F 51 NP 53 52 F SEG T 0V 0V 0V PLAY:5.0V -22.5V -22.1V STOP: 5.3V PLAY: 0V -11.8V -25.7V -25.7V -4.6V-11.0V -7.7V -25.1V -8.0V -21.5V -22.4V -26.2V Cr02: 5.2V NOR:5.2V 2.6V 2.4V 5.3V 4.9V OPEN:

47、0V CLOSE: 5.3V OPEN: 5.3V CLOSE: 0V OFF: 5.3V LEO ON: 0.3V 4.3V 0V 0V 5.3V 5.3V -26.0V 13.5V 29.5V -19.0V 13.0V 14.7V 30.0V 11.8V 29.0V 12.5V 13.0V 11.3V 5.8V 0.6V -16.0V -26.8V -13.8V 25.0V 5.3V 5.8V 0.6V -40.5V -26.2V-50.5V 21.0V 17.9V 5.0V 2.7V 5.3V 5.3V 0V 0V 11.8V PLAY: 0V STOP : 11.3V PLAY: 0.

48、7V STOP: 0V G1G1 S U 5.3V AC5.0V -19.0V 1K R228 2W 4.4V 8 5.3V 5.1V bcdefgmhkjnp 76 1u50 C167 + 10 R231 100K R229 47K R230 AUTO BIAS REC LEVEL COUNTER STAND BY DOLBY NRBC CCRS MPX FILTERTYPETYPETYPE Q1 IC RESET Q11 D1 Q8 Q2 14V AVR Q3 Q5 Q4 Q6 AVR 12V D4 AVR -25V RESET ON/ SPEED LED TAPE AMP PH D22D21D20 D3 D27 D5 D19D7D6 D8 D18D17D16D15 D25