Akai-TX-3310-Schematic电路图 维修手册.pdf

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1、page 1 Adjustment methodMODEL :MX-3800 Measurement instruments required forTuner section adjustment 1Low frequency oscillator Voltage applied to tuner - +B:DC 4.5V This oscillator should have a capacity to output VT:DC 12V 0dBs to 600 at an oscillation frequency ofReference measurement - 1.414V/4 50

2、Hz-20KHzoutput Input positions - AM : Standard loop antenna 2Electronic voltmeter FM : FMANT (hot) and D102 (GND) 3Distortion meter 4Frequency counterStandard measurement position of volume 5Wow ( 2 ) R/P swith in recording state; ( 3 ) Adjusting T301 use a plastic screwdriver, AC bias frepuency;60+

3、-1KHZ. 3 TAPE SPEED ADJUSTMENT ( 1 ) Insert the test tape(MTT-111N,3,000 HZ) ( 2 ) Press the PLAY button. ( 3 ) Use a flat-tip screwdriver to turn the VR 301. adjust VR501 so that the frequency counter become 3,000Hz TAPE HEAD AND SPEED ADJUSTMENT DIAGRAM CASS DECK A DECKB DECK A P HEAD L. SW A L. S

4、W E HEAD P/R HEAD RadioFans.CN 收音机爱 好者资料库 page 3 Tape recorder section MeasurementStandardAdjusting conditionsValuespositions ConfirmationTest tape1 Playback the test tape TCC-182A (8KHz)MaximumAdjust the head of head angle :TA-182A(8KHz)2 With the recording & playback mechanism, outputazimuth screw

5、 Measurement output adjust the head azimuth screw so that theonly when the terminal left and right output levers becomehead has been :Speaker terminal maximum, After adjustment, lock the headchanged Sperker R azimuth at least by half turn. (Load resistance:4) :Headphone terminal ConfirmationTest tap

6、eAdjust VR301 so that the frequrncy counterTape speed VR301 of tape speed :TCC-112(3000Hz)reading becomes 3,010Hz +/-15Hz whenof deck playing back the test tape TCC-112 (3000Hz) with:3,010Hz Measurement output playback and recording mechanism after+/-15Hz terninalending forward winding if the taoe.

7、:Headphone terminal Reference Values for Confirmation Items MeasurementStandardAdjusting conditionsValuespositions Wow & flutter Test tapeWhen the test tape TCC-112 (3000Hz) has been0.25% or :TCC-112(3000Hz)played back with the recording and playbackless mecganism at the beginning of forward(WRMS) M

8、easurement oututwinding, the frequency counter reading of terminalwow & flutter should be 0.25% or less :Headphone terminal (WRMS). Electrical Performance MeasurementStandardAdjusting conditionsValuespositions Adjustment of Mode:Forward or1 With the recording and playback recording bias reverse mode

9、 mechanism, load thd test tapes current Recording mode TDK-60 , and set the mechanism to the recording 4.5A (Reference Test tape and pausing condition in advance . +/-0.5A Value)TDK-60 Measurement output 2 After connecting 100in series to the termial recorder head, measure the bias current :Both rec

10、ording and with a valve voltmeter at both of the headphone terminals terminals ITEMSMeasrrnment methed Measrrnment methedItems ITEMSMeasrrnment methed RadioFans.CN 收音机爱 好者资料库 page 4 Adjustment of Reference frequency 1 with the recording and playbackOutput recording and :1KHz and 8KHz mechanism, load

11、 the test tapes (TDK-60)deviation playback (REF.:-20dB) and set the mechanism to thebetween frequencyTest tape recording and pausing condition in 1KHz and characteristicsTDK-60 advance8KHz Measurement input2 While repetitively inputting the reference:-1dB +/-2dB terminal frequency signal of 1KHz and

12、 10KHz from :OSC IN OSC IN, record and playback the tape. Reference Values for Electrical Function Confirmation Items MeasurementStandardAdjusting conditionsValuespositions RecordingForward or reverse1 While changing over to and form BIAS 160KHz biasTest tape and 2, confirm that the frequency is+/-1

13、KHz frequencyTDK-60 changed Measurement2 With the recording and playback terminal : BIAS TP on mechanism, load the test tape. P.C. board (TDK-60 ) , and set the mechanism to the recording and pausing condition in advance. 3 Confirm that the BIAS TP frequency on the P.C. board is 60KHz +/-1KHz ItemsM

14、easrrnment methed page 5 Flow of functional operation until TOC read Check Point Check that the voltage at the pin 100 of IC501 is OV (a moument)? Check that the voltage at the pin1 of IC503 + side is + 5V? Confirm that the Focus error s-cuve signal at the pin16 of IC503 is approx.2V p-p Tracking er

15、ror waveform at TOC readingConfirm that the signal from pin55 IC501 is 0V as a accelerated pulse during approx.400ms Confirm the waveform of the Tracking error signal at the pin49 of IC501 (R521) (See fig-1) Confirm the eys-pattern at the lead of TP1 Power ONPower KeySlider turns REST SW ON. Automat

16、ic tuning of TE offset Laser ON Detection of disc Automatic tuning of Focus offset Automatic measurement of Disc is rotated Focus servo ON (Tracking servo ON) Automatic measurement of Automatic tuning of Tracking error balance Automatic tuning of Focus error balance Automatic tuning of Focus error g

17、ain Automatic tuning of Tracking error gain TOC reading Play a disc Approx 3sec pin 15 of IC901(TO) Approx 1.8V Tracking servo off status Tracking servo on status Disc to be braked to stop TOC reading finishes Disc status to rotate Automatic measurement of TO amplitude and automatic tuning of TO bal

18、ance 500mV/div 2mS/div Fig.1 VREF page 6 TUNER ADJUSTMENTS use a plastic screw driver for adjustments. Adjust the intermediate frequency of AM and FM to the frequency of ceramic filter. Supply voltage : DC 12.0 V Speaker impedance : 4 OHMS Function switch : RADIO CT101 TP4 L101TP1 TP2 CT102 T102L102

19、 T101 TP4 T103 TP8 a.AM AdjustmentBAND SELECT TO : MW stepAdjustingTuning Input Connection Output ConnectionAdjustmentOscilloscope circuitFrequencyMeasurementinput Measurementoutputpartsand VTVM 1IF999KHzAM SweepAM VTVMTP4(H)T102 (450KHz)1000 KHzGeneriorANT OscilloscopeTP8(E) (Non-adjustment) 2Tunin

20、g5221620KHzAM SignalAMDigital VoltmeterTP4(H)T101Low END 3Coverage5201710KHzGeneriorANT OscilloscopeTP8(E)Confirm 1.8V +/-0.1V 4603/600 KHzAM SignalAM VTVMTP4(H)AM COIL 51404/1400 KHzGeneriorANT OscilloscopeTP8(E)CT102 Maximum b. FM AdjustmentBAND SELECT TO : FMFM Dummy Antenna : 75 ohm unbalance st

21、eAdjustingTuning Input Connection Output ConnectionAdjustmentOscilloscope circuitFrequencyMeasurementinput Measurementoutputpartsand VTVM 1IFFM SweepTP4(E)TP4(H) (10.7 MHz)98.0 MHzGeneratorTP4(H) OscilloscopeTP8(E)T103 (Non-adjustment) 2Tuning87.5 MHzFM SignalFM ANTDigital VoltmeterTP4(H)L102Low END

22、 3Coverage108 MHzGeneratorTP1 (E) OscilloscopeTP8(E)Confirm 1.8 +/-0.1V TP2(H) 490.0 MHzFM SignalFM ANT VTVMTP4(H)L101 5Tracking106.0 MHzGeneratorTP1 (E) OscilloscopeTP8(E)CT101 TP2(H)Maximum KENLEX ELECTRONICS LTD. 24/F., NANYANG PLAZA, 57 HUNG TO ROAD, KWUN TONG, KOWLOON, HONG KONG. TEL: 27577368,

23、 27577718 FAX: 27519212 SPECIFICATION 1 AM SECTION MODEL : MX-3800(10W) DATE : 22/MAY/2002 TEST CONDITION : 400 Hz 30% MODULATION REF. OUTPUT : 500 mW 4 Ohm ITEM UNIT NORMAL LIMIT DATA 1. FREQUENCY RANGE HIGH ENDKHz 1620/1710 +/-3 LOW ENDKHz 522/530 +/-3 2. IF FREQUENCY KHz 450 450 +/-3 3. MAXIMUM S

24、ENSITIVITY 612/610 kHzdB/M 54 60 999/1000 kHzdB/M 54 60 1404/1400 kHzdB/M 54 60 4. SENSITIVITY FOR 20 dB S/N 612/610 kHzdB/M 60 66 999/1000 kHzdB/M 60 66 1404/1400 kHzdB/M 60 66 5. IF REJECTION 612/610 kHzdB 42 35 6. IMAGE REJECTION 1404/1400 kHzdB 40 34 7. AUTO STOP SENS. 999/1000 kHzdB/M 64 70 8.

25、WHISTLE MODULATION 5 mV IN % 7 12 9. AGC EFFECT 999/1000 kHzdB 38 32 10. S/N RATIO 999/1000 kHz 5mV INdB 35 30 11. T.H.D 999/1000 kHz% 2 4 12. FREQUENCY RESPONSE 999/1000 kHz -6 dB Hz 125-2500 150-2000 13. MIN. VOL. HUM 999/1000 kHzmV 2 3 14. OSC FALL-OUT VOLTAGE AC 999/1000 KHzV -30% -20% 15. OVER

26、LOAD THD AT REF O/P MOD80% 999/1000 KHz% 3 6 KENLEX ELECTRONICS LTD. 24/F., NANYANG PLAZA, 57 HUNG TO ROAD, KWUN TONG, KOWLOON, HONG KONG. TEL: 27577368, 27577718 FAX: 27519212 SPECIFICATION 2 FM SECTION MODEL : MX-3800 (10W) DATE : 22/MAY/2002 TEST CONDITION : 1 KHZ 22.5 KHZ DEV.(MONO) REF. OUTPUT

27、: 500 mW 4 Ohm ITEM UNIT NORMAL LIMIT DATA 1. FREQUENCY RANGE HIGH ENDMHz 108.0 +/-0.1 LOW ENDMHz 87.5 +/-0.1 2. IF FREQUENCY MHz 10.7 +/-0.1 3. MAXIMUM SENSITIVITY 90.1 MHzdB 16 20 98.1 MHzdB 16 20 106.1 MHzdB 16 20 4. SENSITIVITY FOR 30 dB S/N 90.1 MHzdB 20 26 98.1 MHzdB 20 26 106.1 MHzdB 20 26 5.

28、 IF REJECTION 90.1 MHzdB 55 45 6. IMAGE REJECTION 106.1 MHzdB 25 22 7. -3 dB LIMITTING SENSITIVITY 98.1 MHzdB 22 26 8. FREQUENCY RESPONSE -6 dB W/75uSHz 125-12000 150-9000 9. AUTOSTOP SENS. 98.1 MHzdB 26 32 10. S/N RATIO 98.1 MHz 60 dB INdB 45 38 11. T.H.D. 98.1 MHz 60 dB IN% 2 4 12. OUTPUT POWER 10

29、% THD98.1 MHz 75 kHz DEVW 10 9.5 13. OSC FALL-OUT VOLTAGE AC 98.1MHzV -30% -20% 14. OVERLOAD DIST (75Kz DEV) 98.1 MHz% 2 3.5 KENLEX ELECTRONICS LTD. 24/F., NANYANG PLAZA, 57 HUNG TO ROAD, KWUN TONG, KOWLOON, HONG KONG. TEL: 27577368, 27577718 FAX: 27519212 SPECIFICATION 3 FM MPX SECTION MODEL : MX-3

30、800(10W) DATE : 22/MAY/2002 TEST CONDITION : 1 KHz 75 KHz DEV. PILOT = 10% REF. OUTPUT : 500 mW 4 Ohm ITEM UNIT NORMAL LIMIT DATA 1. SEPARATION 98.1 MHz 60 dB INdB 28 22 2. STERREO INDICATOR SENS. 98.1 MHzdB 18 24 3. T.H.D. 98.1 MHz% 2 4 4. S/N RATIO W/B.P.F 98.1 MHz 60 dB INdB 42 36 5. CHANNEL BALA

31、NCE 98.1 MHzdB 0 1.5 KENLEX ELECTRONICS LTD. 24/F., NANYANG PLAZA, 57 HUNG TO ROAD, KWUN TONG, KOWLOON, HONG KONG. TEL: 27577368, 27577718 FAX: 27519212 SPECIFICATION 4 TAPE SECTION MODEL : MX-3800(10W) DATE : 22/MAY/2002 TEST CONDITION : REF. OUTPUT : 500 mW 4 Ohm ITEM UNIT NORMAL LIMIT DATA 1. TAP

32、E SPEED 3KHz% +/-1 +3-2 2. WOW & FLUTTER 3KHz% 0.2 0.35 3. CHANNEL BALANCE 1KHz -10dBdB 1 3 4. SEPARATION 1 kHz -10dBdB 35 30 5. CROSS TALK 1kHz -10dBdB 35 28 6. S/N RATIO (PLAYBACK) 1KHz 0dBdB 45 42 7. ERASE RATIO (FOR AC.BIAS) 1KHzdB 40 35 8. DUBBING LEVEL 1KHzdB +/-3 +/-4 9. FREQ. RESPONSE 125/1K

33、/6.3K (PLAYBACK) dB +/-3 +/-6 10. FREQ. RESPONSE 125/1K/6.3K (REC. PB.) dB +/-3 +/-6 11. DISTORTION (PLAYBACK) 1KHz 0dB% 1.5 3 12. ISTORTION(R/P.BACK)FOR AC.BIAS % 3 5 13. MINIMUM VOL. HUM mV 2 4 14. MAXIMUM VOL. HUM mV 40 75 15. OUTPUT POWER 10% THD 1KHz 0dBW 10 9.5 16. ERASE RATOR (FOR DC.BIAS) dB

34、 28 20 17. DISTORTION(FOR DC.BIAS/ERASE) 1KHz% 5 8 KENLEX ELECTRONICS LTD. 24/F., NANYANG PLAZA, 57 HUNG TO ROAD, KWUN TONG, KOWLOON, HONG KONG. TEL: 27577368, 27577718 FAX: 27519212 SPECIFICATION 5 CD SECTION MODEL : MX-3800(10W) DATE : 22/MAY/2002 TEST CONDITION : REF. OUTPUT : 500 mW 4 Ohm ITEM U

35、NIT NORMAL LIMIT DATA 1. FREQUENCY RESPONSE 63 HzdB +/-3 +/-6 15 kHzdB +/-3 +/-6 2. S/N RATIO (A WEIGHTED) dB 55 45 3. DISTORTION 1KHz 0dB% 1 2 1KHz -20dB% 2 4 4. CHANNEL SEPARATION 1KHzdB 45 38 5. CHANNEL BALANCE 1KHzdB 0.5 2 6. MINIMUM VOL. HUM mV 2 3 7. MAXIMUM VOL. HUM mV 20 30 8. OUTPUT POWER 1

36、0% THD 1KHz 0dBW 10 9.5 9. INTERRUPTION mm 0.7 10. BLACK DOTS mm 0.6 11. FINGER PRINTS um 65 ISSUED BY : _ Model no.: TX-3310 Part no.Description Ass. Part no.: MX-3800-1020 MX-3800/10W AKAI (TX-3310) AM/FM VDE 230V SILVER/G 1121-663013-7YTRANSFORMER EI-66 230V VDE/BS APP W/125? (M30)& 0.5 SILICON (

37、SF66E/192183) SING FUNG 2192-300000-02CLOSE END CONNECTOR UL/VDE APP HW-C4 (TCM & FAVORTRON) 3198-326130-49JUMPER WIRE #26 1300mm WHITE UL1007 4201-033072-18POWER CORD VDE/SEV APP.72 W/0 SOCKET (KE-21 PLUG) (H03VVH2-F)(KENIC) 5211-010003-09CD MECHANISM (CMS-FR3GA) W/3CD CHANGER (PROTECH) 6212-0D1097

38、-23CASS MECHANISM 12 KEYS THL-21SW-1097C W/CLUTCH (TEAMHAPPY) MOTOR:EG530YD-2BH 7303-000004-02CABLE TIE 4 CT-100M (CHEONG WING) 8500-030802-00SCREW 3 x 8 P/A 9500-031003-00SCREW 3 x 10 B/T 10500-031007-00SCREW 3 x 10 W/T 11500-031010-00SCREW 3 x 10 W/T WASHER HEAD DIA ?0 12500-031203-00SCREW 3 x 12

39、B/T 13500-031207-01SCREW 3 x 12 W/T (BLACK) 14500-041408-00SCREW 4 x 14 PWA 15501-030601-00SCREW 3 x 6 P/M 16501-041003-01SCREW 4 x 10 K/M (BLACK) 17501-260504-00SCREW 2.6 x 5 T/T 18503-153515-00FIBER WASHER 3.5 x 15 x 1.5mm 19602-200200-15PAD CORD 20 x 20 x 15mm W/TAPE 20605-011000-03RUBBER FOOT ?1

40、 x 3mm 21706-088800-A0RECORDING PLATE (SINO MILLION) 22707-530100-A0SCREW PLATE (SINO MILLION) 23717-088801-A0CASS P.C.B. MTG. BKT B (SINO MILLION) 24717-088802-A0CASS P.C.B. MTG. BKT C (SINO MILLION) 25717-088804-A0CASS P.C.B. MTG. BKT D (SINO MILLION) 26719-882800-00CASS DOOR SPRING ?.8MM 27800-38

41、0000-03FRONT CABINET (LCD) STD BRIGHT SILVER SPRAY (A78-030) D.GREY S.S (PMS432C) AKAI DESIGN 28801-380001-01REAR CABINET MOULDED GREY (921633) W/O AUX/75 OHM JACK/ SURROUND SPK.JACK 29802-380000-01TOP CABINET MOULDED GREY (921633) STD 30807-380000-01CDC DOOR BRIGHT SILVER SPRAY (A78-030) STD 31809-

42、380000-03CASS DOOR COVER L B.SILVER Spare Patr list (A78-030)GREY(A-2394)S.S GREY (432C),SIL(877C)GREY VER AKAI 32809-380001-03CASS DOOR COVER R B.SILVER (A78-030)GREY(A-2394)S.S GREY (432C),SIL(877C)GREY VER AKAI 33810-882300-01CASS DOOR BKT L MOULD GREY (921633) 34810-882301-01CASS DOOR BKT R MOUL

43、D GREY (921633) 35812-380000-01CASS KNOB PLAY L MOULDED GREY (921633) 36812-380001-01CASS KNOB PLAY R MOULDED GREY (921633) 37813-380000-01CASS KNOB PAUSE L MOULDED GREY (921633) 38813-380001-01CASS KNOB PAUSE R MOULDED GERY (921633) 39814-380000-01CASS KNOB F.F. L MOULDED GREY (921633) 40814-380001

44、-01CASS KNOB F.F. R MOULDED GREY (921633) 41815-380000-01CASS KNOB REW L MOULDED GREY (921633) 42815-380001-01CASS KNOB REW R MOULDED GREY (921633) 43816-380000-01CASS KNOB STOP/EJECT L MOULDED GREY (921633) 44816-380001-01CASS KNOB STOP/EJECT R MOULDED GREY (921633) 45817-380000-01CASS KNOB RECORD

45、MOULDED GREY MOULDED GREY (921633) 46820-380000-03CD FUNCTION KNOB (L) B.SILVER SPRAY (A78-030) & C.GREY (A-2394) W/O S.S AKAI DESIGN 47820-380001-03CD FUNCTION KNOB (R) B.SILVER SPRAY (A78-030) & C.GREY (A-2394) W/O S.S AKAI DESIGN 48822-380000-02VOLUME KNOB BRIGHT SILVER SPRAY (A78-030) D.GREY S.S

46、 49832-380000-03CASS DOOR LENS (L) MOULD CLEAR GREY (921543L) W/O S.S 50832-380001-03CASS DOOR LENS (R) MOULD CLEAR GREY (921543L) W/O S.S 51835-380000-07DISPLAY LENS MOULDED GREY LENS (921543L) W/SILVER (PMS 877C) S.S. AKAI DESIGN 52836-380000-08CD DOOR LENS MOULDED GREY LENS (921543L) W/SILVER (PMS 877C) S.S. AKAI DESIGN 53836-380001-06FRONT CABINET LENS MOULDED GREY LENS (921543L) W/SILVER (PMS 877C) S.S. AKAI DESIGN 54838-011800-00DAMPER GEAR 55839-011800-00GEAR HOLDER 56843-380000-00LCD BRACKET 57845-380000-01VOL. KNOB BRACKET (CHROME) 58845-380001-00MA