Yamaha-KXE-100-Service-Manual电路原理图.pdf

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1、COUNTER RESET MODE REC/ PAUSE REC LEVELDIRECTION MINMAX DOLBY NR NATURAL SOUND STEREO CASSETTE DECK KX-E100 STANDBY/ON P.O.Box 1, Hamamatsu, Japan SERVICE MANUAL STEREO CASSETTE DECK KX-E100 100687 I CONTENTS TO SERVICE PERSONNEL . 1 SPECIFICATIONS. 1 DIMENSIONS . 2 INTERNAL VIEW . 2 REAR PANELS . 3

2、 DISASSEMBLY PROCEDURES . 45 ADJUSTMENT . 69 DISPLAY DATA . 10 IC DATA . 1112 BLOCK DIAGRAM. 13 PRINTED CIRCUIT BOARD . 1421 SCHEMATIC DIAGRAM . 22 PARTS LIST . 2331 IMPORTANT NOTICE This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel. It has been ass

3、umed that basic service procedures inherent to the industry, and more specifically YAMAHA Products, are already known and understood by the users, and have therefore not been restated. WARNING:Failure to follow appropriate service and safety procedures when servicing this product may result in perso

4、nal injury, destruction of expensive components, and failure of the product to perform as specified. For these reasons, we advise all YAMAHA product owners that any service required should be performed by an authorized YAMAHA Retailer or the appointed service representative. IMPORTANT:The presentati

5、on or sale of this manual to any individual or firm does not constitute authorization, certification or recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form. The data provided is believed to be accurate and applicable to the unit(s) indicated

6、on the cover. The research, engineering, and service departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitable and specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please c

7、ontact the distributors Service Division. WARNING:Static discharges can destroy expensive components. Discharge any static electricity your body may have accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss). IMPORTANT:Turn the unit OFF durin

8、g disassembly and part replacement. Recheck all work before you apply power to the unit. KX-E100 RadioFans.CN 收音机爱 好者资料库 KX-E100 WALL OUTLET EQUIPMENT UNDER TEST AC LEAKAGE TESTER OR EQUIVALENT INSULATING TABLE 1 I TO SERVICE PERSONNEL Critical Components Information. Components having special chara

9、cteristics are marked and must be replaced with parts having specifications equal to those originally installed. WARNING: CHEMICAL CONTENT NOTICE! The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and /or plastic (where applicable) components m

10、ay also contain traces of chemicals found by the California Health and Welfare Agency (and possibly other entities) to cause cancer and/or birth defects or other reproductive harm. DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REA- SON WHATSOEVER! Avoid prolo

11、nged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyes to solder/flux vapor! If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling food. I SPECIFICATIONS Type Auto Reve

12、rse 4-Track 2-Channel Playback/Recording Stereo Cassette Deck Heads REC/PBHard permalloy EraseDouble Gap Ferrite Motors MainDC servo motor Tray LoadingDC motor Wow & Flutter W.PEAK (EIAJ)0.19 % W.RMS0.09 % Fast Winding Time about 100 seconds (C-60 tape) Frequency Response Type I (Normal)30 15,000 Hz

13、 3 dB Type II (CrO2)30 16,000 Hz 3 dB Type IV (Metal)30 18,000 Hz 3 dB S/N Ratio (S : 3rd harmonic distortion 3 %, N : Weighted) NR off58 dB Dolby B NR on66 dB Dolby C NR on74 dB Harmonic Distortion 1.0 % Channel Separation More than 40 dB Crosstalk (125 Hz) More than 55 dB Input Sensitivity/Impedan

14、ce Line100 mV/30 k Output Level Line570 mV/3.0 k Power Requirements U, C modelsAC120 V, 60 Hz R modelAC110-120/220-240 V, 50/60 Hz A modelAC240 V, 50 Hz B, G modelsAC230 V, 50 Hz Power Consumption 12 W (Standby 3W) Dimensions (W x H x D) 217 x 88 x 293 mm (8-9/16 x 3-7/16 x 11-9/16) Weight 3.0 kg (6

15、 lbs 10 oz.) Accessories Input & Output cords (RCA type) x 2, System cord x 1 * Specifications are subject to change without notice. U . U.S.A. model C . Canadian model R . General model A . Australian model B . British model G. European model RadioFans.CN 收音机爱 好者资料库 KX-E100 1 2 3 4 5 217(8-9/16) 80

16、(3-1/8)8(5/16) 88(3-7/16) 275(10-13/16)7(1/4) 11(7/16) Unit : mm (inch) 293(11-9/16) 2 I INTERNAL VIEW 1 MAIN P.C.B. (4) 2 Cassette Mechanism Unit 3 MAIN P.C.B. (1) 4 MAIN P.C.B. (2) 5 MAIN P.C.B. (3) I DIMENSIONS KX-E100 3 I REAR PANELS M U, C models M R model M A model M B, G models KX-E100 1 3 4

17、3 5 5 1 2 Cassette Mechanism Unit Hook Front Panel Hook Top Cover CB201CB209 4 I DISASSEMBLY PROCEDURES Remove parts in disassembly order as numbered. 1. Removal of Top Cover a. Remove 4 screws (1) and 4 screws (2) in Fig. 1. b. Lift the Top Cover at the rear and move it rear-ward slantingly. 2. Rem

18、oval of Front Panel a. Disconnect 2 connectors (CB201 and CB209) in Fig. 2. b. Remove 2 screws (3) and 2 screws (4) in Fig. 1. c. Detach the 2 hooks in Fig. 1 and then pull out the Front Panel forward. 3. Removal of Cassette Mechanism Unit a. Remove 4 screws (5) in Fig. 1. b. Disconnect 3 connectors

19、 (CB1, CB2 and CB3) in Fig. 3. Fig. 2 Fig. 1 KX-E100 899 Hook Relay P.C.B. Hook Pinch Roller (R) Pinch Roller (L) Head Assy 66 66 77 CB3 CB2CB1 F/R Belt Main Belt Main Motor Hook 5 6. Removal of Pinch Roller Detach the hook and then remove the Pinch Roller in Fig. 4. 7. Removal of Head Assy a. Remov

20、e 1 screw (8) and then remove the Relay P.C.B. in Fig. 4. b. Remove 2 screws (9) and then remove the Head Assy in Fig. 4. *Perform the adjustment of azimuth after installing the Head Assy. Fig. 4 4. Removal of Cassette Mechanism a. Remove 4 screws (6) in Fig. 3. b. Detach the hook in Fig. 3 and then

21、 pull out the Cassette Mechanism. 5. Removal of Main Motor Remove 2 screws (7) in Fig. 3. Fig. 3 KX-E100 6 1. Before adjustment G Since head magnetization, dust accumulations, etc. are likely to introduce error in the various characteristics, it is very important that the heads are properly demagnet

22、ized and cleaned. G Make adjustments of mechanical system, playback system and recording system in that order. G Except for azimuth adjustment, adjust in the forward direction. 2. Instruments required G Audio frequency oscillator G ACVM or dual channel (ACVM) G DCVM G Wow/flutter meter G Oscilloscop

23、e G Frequency counter G Torque meter TW-2111A (TX911580) .Take up/back tension (FWD) TW-2121A (TX911570) . Take up/back tension (RVS) CT-160L (TX911120) . FF/REW 3. Test tape required G MTT-111N (TX911650). Normal speed G MTT-114N (TX911680). Azimuth G MTT-212N (TX911660).Playback level G MTT-256 (T

24、X911300) . Playback frequency response (Normal) G MTT-356 (TX911310) . Playback frequency response (CrO2) G Reference tape Type I/Normal (LH) . TDK AC225 (VU167200) Type II/High (CrO2). TDK AC514 (VU167300) Type IV/METAL. TDK AC713 (VU167400) I ADJUSTMENTS TEST MODE (Operation and Display Check) Ent

25、er the TEST MODE by pressing the STANDBY/ON key while pressing the STOP key and FF key when the power is OFF. NO.KEYFUNCTIONACTION 1PLAYPLAYPlayback mode without the cassette tape. In this mode, cleaning the REC/PB head. 2STOPSTOPStop the playback mode. 3DIRECTIONDIRECTIONChange the playback directi

26、on. 4FFDIMMERDimmed display when pressing the FF key. (6 step) 5REWPHOTO MODEPhotograph mode. 6DOLBY NRAll display segments lit. 7REC/PAUSEVersionDisplay the program version and date when pressing the REC/ PAUSE key. 8MODEDisplay grid and segments short/open check. (Fig. A is OK) 9COUNTER RESETEXITT

27、o escape the TEST MODE. 10POWEREXITTo escape the TEST MODE and power off. Fig. A DISPLAY (Light the all segment)DISPLAY CHECK (Light a segment of each grid) KX-E100 VR101VR103 L LL R RR VR104 VR203VR204VR201VR202 MAIN (1) MAIN (2) TAPE SPEED ADJ.PLAYBACK LEVEL ADJ. RECORDING LEVEL & BIAS ADJ.RECORDI

28、NG LEVEL & BIAS ADJ. Azimuth adjustment screw. (REVERSE) Azimuth adjustment screw. (FORWARD) OK Rec out L : ch 1 Rec out R : ch 2 DC input, X-Y (Resurge) mode NG Fig. B 0.2V 0.2V 7 KX-E100 8 Item to be Adjusted Check each torque Check FF, REW take up time Azimth Tape Speed Wow/ Flutter Tape CT-160L

29、(FF, REW) TW-2111A (FWD) TW-2121A (RVS) AC-514 (C-60) MTT-114N 10kHz, 10dB MTT-111N 3kHz, 10dB MTT-111N 3kHz, 10dB Step 1 2 3 4 5 Mode FF REW PLAY FF REW PLAY PLAY PLAY Rating FF, REW torque : within 70 150g/cm. Take up torque : 30 70g/cm. Back tension : 1.5 6g/cm. 80 to 120 seconds. Playback output

30、 of L and R is maximum and phase difference should be minimum both directions. (Fig. B) 2980 Hz 15 Hz Less than 0.19% (WRMS) Remarks After the adjustment make sure to apply screw lock paint. Perform adjustment at the center of the test tape, if possible. Confirm at center of the test tape, if possib

31、le. Instrument required Torque meter ACVM oscilloscope Frequency counter Wow/Flutter meter Adjustment part Azimuth adjustment screw. (Fig. B) VR101 MECHANICAL ADJUSTMENT Rating 5 dBV 0.3 dBV Check that the 10kHz playback level is within 0 3 dB of the 1kHz playback level. (Fig. C) Item to be Adjusted

32、 Playback level (315Hz) Confirmation of playback frequency response Step 1 2 Points of measurement LINE OUT LINE OUT Mode PLAY PLAY Instrument required ACVM ACVM oscilloscope Tape MTT-212N 315Hz, 250nwb/m Test tape for frequency check. 3180s + 120s (LH) (MTT-256) 3180s + 70s (CrO2) (MTT-356) Adjustm

33、ent parts VR201 (L ch) VR202 (R ch) ELECTRICAL ADJUSTMENT G Use 560 mV (250 nwb/m) for 0 dB as the standard level of the unit. 0 dB = 250 nwb/m (315 Hz) = 7 dBV (Rec out level) 4dB 3.5dB 1k 3dB 3dB 3k10kHz3152505012.5kHz Fig. C G PLAYBACK FREQUENCY RESPONSE KX-E100 4dB 4dB 1k 3dB 3dB 3k10kHz31525050

34、12.5kHz Fig. D 9 GTOTAL FREQUENCY RESPONSE ( 20 dBV) Dolby NR OFF / B on / C on Type I (Normal) / Type II (High) / Type IV (METAL) Rating Adjust for equal record and playback levels. ( 25 dBV 0.3 dBV) Adjust for equal record and playback levels. ( 25 dBV 0.5 dBV) Adjust for equal record and playback

35、 levels. (Fig. D) Perform record bias adjustment of High (CrO2) tape again, if the rating was not satisfied. Confirm recorded level rating as in step 1 when recorded level rating is improper, go back to step 1 and also carry out adjustments in step 2 again. Item to be Adjusted Recording level Record

36、ing bias (Total frequency response) Confirmation of recorded level Step 1 2 3 Points of measurement LINE OUT LINE OUT LINE OUT Mode REC PLAY REC PLAY REC PLAY Instrument required ACVM Audio frequency oscillator ACVM Audio frequency oscillator ACVM Audio frequency oscillator Measurement conditions In

37、put 315 Hz Signal to LINE IN from Audio Frequency Oscillator. Adjust output level of Audio Frequency Oscillator so that the voltage of LINE OUT becomes 25 dBV. Input 12.5 kHz Signal to LINE IN from Audio Frequency Oscillator. Adjust output level of Audio Frequency Oscillator so that the voltage of L

38、INE OUT becomes 25 dBV. Tape AC-514 High (CrO2) AC-514 High (CrO2) AC-225 Normal (LH) AC-514 High (CrO2) Adjustment parts VR203 (L ch) VR204 (R ch) VR103 (L ch) VR104 (R ch) KX-E100 PATTERN AREA 1101831 G VO301 : BJ707GNK (V358690) G PIN CONNECTION G GRID ASSIGNMENT G ANODE CONNECTION Pin No.1234567

39、8910 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 F1 F1 NP P1 P2 P3 P4 P5 P6 P7 NX NX NX NX NX NX NX 1G 2G 3G 4G 5G 6G 7G 8G 9G10G 11GNP F2 F2Connection Note : 1) F1, F2 . Filament 2) NP . No pin 3) NX . No extended pin 4) 1G 11G . Grid 1G2G3G4G5G6G7G8G9G10G11G P1aaaaS1S1S1S1 P2bbb

40、bB1B1B1B1 P3ccccB2B2B2B2 P4ddddB3B3B3B3 P5eeeeB4B4B4B4 P6ffffB5B5B5B5 P7ggggB6B6B6B6 E-10/J-8 I DISPLAY DATA KX-E100 A-D Convert (10 bit x 12 ch) Serial I/O Serial I/O 2 (Clock synchronization/UART) Serial I/O 1 (Clock synchronization) (256 byte automatic transmission) Buzzer output Watch dog timer

41、Port P0 (8) 8 ROM RAM Interrupt controller LCD display 40 Control terminals (36 register port) PWM1 (8 bit) PWM0 (14 bit) TimerSystem clock Timer X (16 bit) Timer 1 (8 bit) Timer 2 (8 bit) Timer 3 (8 bit) Timer 4 (8 bit) Timer 5 (8 bit) Timer 6 (8 bit) XIN - XOUT (Main clock) XCIN - XCOUT (Sub clock

42、) Internal peripheral function I/O Port CPU core Memory Port P5 (8) 8 Port P6 (6) 6 Port P7 (8) 8 Port P8 (8) 8 Port P9 (2) 2 Port P1 (8) 8 Port P2 (8) 8 Port P3 (8) 8 Port P4 (8) 71 64P20/Buz02/FLD0 63P21/FLD1 62P22/FLD2 61P23/FLD3 60P24/FLD4 59P25/FLD5 58P26/FLD6 57P27/FLD7 56P00/FLD8 55P01/FLD9 5

43、4P02/FLD10 53P03/FLD11 52P04/FLD12 51P05/FLD13 50P06/FLD14 49P07/FLD15 48P10/FLD16 47P11/FLD17 46P12/FLD18 45P13/FLD19 44P14/FLD20 43P15/FLD21 42P16/FLD22 41P17/FLD23 40P30/FLD24 39P31/FLD25 38P32/FLD26 37P33/FLD27 36P34/FLD28 35P35/FLD29 34P36/FLD30 33P37/FLD31 32P80/FLD32 31P81/FLD33 30P82/FLD34 2

44、9P83/FLD35 28VEE 27P84/FLD36 26P85/RTP0/FLD37 25P86/RTP1/FLD38 P57/SRDV2/SCLK22 P56/SCLK21 P55/TxD P54/RxD P53/SCLK12 P52/SCLK11 P51/SOUT1 P50/SIN1 AVSS VREF P65/SSTB1/AN11 P64/INT4/SBUSY1/AN10 P63/AN0 P62/SRDY1/AN8 P77/AN7 P76/AN6 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 P75/AN5 P74/AN4 P73/

45、AN3 P72/AN2 P71/AN1 P70/AN0 P61/CNTR0/CNTR2 P60/CNTR1 P47/INT2 RESET P91/XCOUT P90/XCIN VSS XIN XOUT VCC P46/TSOUT P45/T1OUT P44/PWM1 P43/BUZ01 P42/INT3 P41/INT1 P40/INT0 P87/PWM0/FLD39 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 E-11/J-9 I IC DATA IC205 : M38B57M6-135FP (XW379A00

46、) KX-E100 E-12/J-10 Pin No.PORTI/OINOUTRESISTOR 1P75/AN5IMecha SW1AD(PLAY, Half)PU 2P74/AN4ILoading SWAD(IN,OUT)PU 3P73/AN3IMeter LAD(-30 +6) 4P72/AN2IMeter RAD(-30 +6) 5P71/AN1IOperation 2AD(FF,REW,REC,COU,EJ)PU 6P70/AN0IOperation 1AD(ST,PL,DIR,DOL,MOD)PU 7P61/CN0,2ODOLBY-BB : H 8P60/CN1ODOLBY-OFFOFF : HPU 9P47/INT2IAC Pulse 10RESETIResetReset : LPU 11P91/XCOOMETALMETAL : H 12P90/XCIOHIGHHIGH : H 13VSSGND 14XIN4MHz 15XOUT4MHz 16VCCVu 17-22P41-P46I(Pull down)PD 23P40/INT0IPower SWON : LPU 24P87/PWMOREC MU