Technics-RSDV250-tape-sm 维修电路原理图.pdf

http:/servis- Manual TOP NEXT AD0102028C2 Cassette Deck lRS-DV250 AR-2 Mechanism series Colour (S).Silver Type Area (E).Europe. 2001 Matsushita Electric Industrial Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law. TOP NEXT RadioFans.CN 收音机爱 好者资料库http:/servis- Service Mode Function of Cassette Mechanism TOP PREVIOUS NEXT This unit is equipped with a service mode function of cassette mechanism, so that if the unit operates incorrectly, the fault displayed using an error code on the FL display of the Tuner/Amplifier (SA-EH770). The system control IC and FLdisplay are part of the Tuner/Amplifier so make sure the system has been connected properly before using this function. Use this function during maintenance to check faults of items below. 5.1 Cassette tape to be prepared 5.2 Selecting service mode 5.3 Deck 1 mechanism check 5.4 Deck 2 mechanism check 5.5 Exiting service mode TOP PREVIOUS NEXT 20. 10. 2004file:/C:Documents%20and%20SettingsAdminPlochaSCHMATAVIDEAPAN.RadioFans.CN 收音机爱 好者资料库http:/servis- Cassette tape to be prepared TOP PREVIOUS NEXT lMetal tape: Recorded music tape with only one erasure prevention tab intact./(use middle portion of tape) lNormal tape: /CrO2 tape: Recorded music tape with both erasure prevention tabs intact./(use middle portion of tape) TOP PREVIOUS NEXT http:/servis- Selecting service mode TOP PREVIOUS NEXT 1. Turn on the power to the unit. 2. Make sure that no tape is inserted in the cassette deck. (Service mode cannot be selected with a tape inserted in the cassette deck.) 3. Press the DOLBY NR button for about 2 seconds, and keep pressing it, also press the STOP button for about 2 seconds. Refer to Fig. 5-1. Fig. 5-1. TOP PREVIOUS NEXT 20. 10. 2004file:/C:Documents%20and%20SettingsAdminPlochaSCHMATAVIDEAPAN.http:/servis- Deck 1 mechanism check TOP PREVIOUS NEXT 1. Press the Deck 1/deck 2 select button to change the flashing Deck 2 indicator to Deck 1. Refer to Fig. 5-2. /(No change required if Deck 1 indicator already flashing.) 2. Press the Deck 1 cassette holder open button to open the Deck 1 cassette holder. Refer to Fig. 5-2. 3. Insert a CrO2 tape into the Deck 1 and close the cassette holder. 4. Press the Fast forward button. Refer to Fig. 5-2. /(Tape fast forwards for about 2 seconds then stops.) 5. Press the PLAY button. Refer to Fig. 5-2. /(After TPS operation and check, the tape stops.) 6. Open the Deck 1 cassette holder and replace the tape with a normal tape. 7. Close the Deck 1 cassette holder. 8. Press the Record pause button. Refer to Fig. 5-2. /(No record operation.) 9. Press the STOP button. Refer to Fig. 5-2. A mechanism error code is displayed. Refer to Table 5-1. Each time the STOP button is pressed, the fault items are displayed in sequence. Fig. 5-2. Table 5-1.FL display Symptom Cause H01 Cassette deck does not operate correctly. Faulty cassette deck mechanism mode detect switch (Deck 1: S951, Deck 2: S971), plunger and capstan motor. /(Check and replace) H02 Unit does not record or the unit goes into recording mode even when the erasure prevention tabs have been removed from the cassette. Faulty erasure prevention tabs detect switch (S974, S975) or short-circuit. (Check and replace) H03 Tape does not play even when the tape deck play button is pressed. The motor operates when the tape deck play button is pressed even if cassette is loaded in the deck. Faulty tape detect switch (Deck 1: S952 Deck 2: S972) or short-circuit. (Check and replace) H06 Cassette deck does not detect CrO2 tape. Faulty CrO2 tape detect switch (Deck 1: S953, Deck 2: S973)./(Check and replace) H07 Cassette deck does not detect Metal tape. Faulty Metal tape detect switch (S976). (Check and replace) F01 When the tape play button is pressed, tape advances only slightly and then stops. Reel pulse error (Faulty Hall IC). (Check and replace) F02 TPS (tape program search) does not work. Faulty TPS signal detection or faulty plunger control. /(Check and replace mechanism control IC) 20. 10. 2004file:/C:Documents%20and%20SettingsAdminPlochaSCHMATAVIDEAPAN.http:/servis- Deck 2 mechanism check TOP PREVIOUS NEXT 1. Press the Deck 1/deck 2 select button to change the flashing Deck 1 indicator to Deck 2. Refer to Fig. 5-3. 2. Press the Deck 2 cassette holder open button to open the Deck 2 cassette holder. Refer to Fig. 5-3. 3. Insert a metal tape into the Deck 2 with an intact erasure prevention tab on the right side. 4. Close the Deck 2 cassette holder. 5. Press the Fast forward button. Refer to Fig. 5-3. /(Tape fast forwards for about 2 seconds then stops.) 6. Open the Deck 2 cassette holder and turn over the metal tape. (intact erasure prevention tab on the left side.) 7. Close the Deck 2 cassette holder. 8. Press the Rewind button. Refer to Fig. 5-3. /(Tape rewinds for about 2 seconds then stops.) 9. Open the Deck 2 cassette holder and replace the metal tape with a CrO2 tape. 10. Close the Deck 2 cassette holder. 11. Press the PLAY button. Refer to Fig. 5-3. /(After TPS operation and check, the tape stops.) 12. Open the Deck 2 cassette holder and replace the CrO2 tape with a normal tape. 13. Close the Deck 2 cassette holder. 14. Press the Record pause button. Refer to Fig. 5-3. /(No record operation.) 15. Press the STOP button. Refer to Fig. 5-3. A mechanism error code is displayed. Refer to Table 5-1. Each time the STOP button is pressed, the fault items are displayed in sequence. Fig. 5-3. 20. 10. 2004file:/C:Documents%20and%20SettingsAdminPlochaSCHMATAVIDEAPAN.http:/servis- Exiting service mode TOP PREVIOUS NEXT 1. Press the STOP button for more than 5 seconds (Diagnostic contents stored in memory for both Deck 1 and 2 are erased.) 2. Remove the cassette tape from the cassette holder. 3. Turn off the unit. TOP PREVIOUS NEXT http:/servis- Head azimuth adjustment (Deck 1/2) TOP PREVIOUS NEXT 1. Connect the measuring instrument as shown in Fig. 13-1. 2. Replace azimuth screws for both forward and reverse directions after removing the screw-locking bond left on the head base. (Supply part No. of azimuth screw: RHD17015 ) 3. Playback the azimuth adjustment portion (8 kHz, -20 dB) of test tape (QZZCFM). Adjust the azimuth screw until the outputs of the L/R ch are maximized. Refer to Fig. 13-2. Make sure that thedifference in the peak level between the left and right channels does not exceed 0.5 dB. 4. Perform the same adjustment in reverse playback mode. Check of the level difference forward and reverse directions. 5. Playback the playback gain adjustment portion (315 Hz, 0 dB) of test tape (QZZCFM). Check if level difference between forward and reverse direction is within 1.5 dB. 6. After the adjustment, apply screw lock to the azimuth screw. Fig. 13-1. Fig. 13-2. TOP PREVIOUS NEXT 20. 10. 2004file:/C:Documents%20and%20SettingsAdminPlochaSCHMATAVIDEAPAN.http:/servis- Tape speed adjustment/(Deck 1/2) TOP PREVIOUS NEXT Note: When connecting the unit to other system components for test, short the section between the test point TP604 and TP609 and turn on the entire system. (The unit is set to the TEST mode, and either Deck 1 or Deck 2 indicatorwill blink.) Normal speed (Standard value: 3000 45 Hz) 1. Connect the measuring instrument as shown in Fig. 13-3. 2. Playback the middle portion of test tape. (QZZCWAT) 3. Adjust VR801 (Deck 1) and VR803 (Deck 2) for output value shown below. (For adjustment point, refer to Fig. 13-11. ) Adjustment target: 3000 15 Hz (Normal speed) Standard value: 3000 45 Hz (Normal speed) Fig. 13-3. Note: When the unit is finished for adjusting, disconnect the short section between TP604 and TP609 . TOP PREVIOUS NEXT 20. 10. 2004file:/C:Documents%20and%20SettingsAdminPlochaSCHMATAVIDEAPAN.http:/servis- Connection Diagram Between the Mechanism Assy and Power Supply/(MOTOR and Plunger) TOP PREVIOUS NEXT Fig. 14-1. TOP PREVIOUS NEXT http:/servis- Detail View of EJECT Lever /(EJECT lever fixed by rubber band, Plunger rib operation) TOP PREVIOUS NEXT Fig. 14-2. TOP PREVIOUS NEXT 20. 10. 2004file:/C:Documents%20and%20SettingsAdminPlochaSCHMATAVIDEAPAN.364MAIN CIRCUITABACBACP10112345CP10212345IC103BA7755AFR/P SELECT12467835Q3012SD1819ARTXBIAS OSC CONT.Q306DTC144EUT106BIAS OSC CONT.Q305DTC144EUT106BIAS OSC CONT.Q3022SD1328STXRASWITCHING(REC:ON)Q303,3042SD1450RSTABIAS OSCQ303Q304Q1022SJ164RTAHEAD SELECT(REC:ON)Q106Q103,1042SJ164QTAHEAD SELECT(PLAY:ON)Q104Q103Q105,1062SD1819ARTXMUTINGQ105Q1012SJ164RTAHEAD SELECT(REC:ON)SGDSGDDGSDGSL301IC101CXA1998BQT6R/P EQ AMP125LchRchPLAYBACKHEADDECK1LchERASEHEADDECK2RchR/P HEADR106330KC102680PC101680PR105330KC143470PC115470PR1015.6KR103100KC15010V100C12325V4.7R11922R11822C13016V100C11950V1C14016V10C131470PC12910V22R1171KC117330PR11182R11312KC1116.3V47R1091KC1090.018R141100R142100R144100C144470PC104680PC1100.018C1126.3V47R11282R11427KR1101KC11450V2.2C11350V2.2R1025.6KR104100KC116470PC1253300PC1263300PC118330PR1542.7KC12050V1R13333KR1304.7MC1396.3V47R13227KC30116V470C3036800PC302100V2.2NR3131TP302TP301R3021.8KR30110KD301MA111TXC30550V0.1C30416V100R3032.2KR30415KR30518KR30633KR1384.7KR1372.2KC3096.3V47R3081KC3110.01C3100.01C3083300PR3072.2C3231000PC3071000PR3094.7KR3104.7KR3114.7KL302100HR1343.9KR1356.8KD102MA111TXD101MA111TXR15822KR1274.7KR125100KC1380.047C13750V0.1C13550V1C13650V1R120100KC132470PR1532.7KR15722KC103680PR143100R10710KR131330KR10810KLATCHESSHIFTREGISTERSPBEQCTLAGCAMSRECEQ20K20K10KMUTE40KAGCGAIN210K210K210K 210KIREF40KAGCGAIN10KRECEQRFS12345678910111213232437383940414243444546474820K20K252627282930313233343536REQEQCTL222120191817161514C3060.039R1362.2KC12425V4.79.6V:POSITIVE VOLTAGE LINE: PLAYBACK SIGNAL LINE: RECORDING SIGNAL LINE9.6V0V0V(0.2V)9V0V0V0V0V(8.9V)0V(0.7V)0V0V0V0V(0.7V)0V(8.9V)(0.2V)9V0V0V6V9.6V0V0V(9.5V)0V(0.7V)0V0V(0.6V)0V0V(0.6V)0V(0.7V)0V(0.8V)0V(0.6V)0V9.5V9.5V(0.6V)0V0V(0.1V)(0.1V)0VERASE CURRENTCHECK POINT5V0V4.5V4.5V4.5V4.5V4.5V8.6V5V0V(1.6V)0V(0.2V)5V5V(9.6V)0.1V(0.1V)9.6V(0.2V)9.6V(0.2V)5V(5V)0.2V4.5V9V9V4.5V4.5V4.5V4.5V0V5V0V1.2V2.6V2.6V1.3V0V0V0V0V1.3V2.6V2.6V1.2VDOLBYRchFDECNRMOBAIC201CXA1552M-T4DOLBY B NR123458912131415ATT2ATT2ATT3ATT3ATT1ATT1SCDETSCDET67101116ON/OFFR/PB AJIABABIC102MC14066BFELDECK 1/2 SELECT1234567891011121314Q107DTA143EUT106R/P SELECTQ202DTA143EUT106ENC/DEC SELECTQ201DTA143EUT106DOLBY ON/OFFR2091KR7252.2KR7302.2KR7262.2KC134470PC133470PC1420.1C20325V4.7R21110KC207270PL201R2182.2KR2172.2KC2111500PC22010V470C21916V100C2410.01R23722R22022C239680PC20550V1R221100R2301KR22310KC22325V4.7C22150V0.68R2133KR21512KC21325V4.7C22525V4.7C21750V0.1R222100R21918KC20650V1C240680PC2121500PR21210KR2101KC20425V4.7C208270PL202C21425V4.7R21612KC22625V4.7R22410KR2311KR151100KR14047KR152100KR13947KC14150V1R1485.6KVR10220K(B)R1505.6KVR10420K(B)R2143KC22250V0.68R1495.6KVR10320K(B)R1475.6KVR10120K(B)C21850V0.1DOLBYLchCR12210KR12110K:POSITIVE VOLTAGE LINE: PLAYBACK SIGNAL LINE: RECORDING SIGNAL LINE5V5V9.6V9.6V(0.2V)9.6V0V(9.5V)4.8V9.6V4.7V4.7V4.6V4.7V0.4V4.8V4.8V4.7V1.2V4.7V0.4V4.8V4.6V(0V)0V5V5V5V(0V)5V(5V)0VPLAYBACKGAIN ADJ.(DECK1/Lch)PLAYBACKGAIN ADJ.(DECK2/Lch)PLAYBACKGAIN ADJ.(DECK1/Rch)PLAYBACKGAIN ADJ.(DECK2/Rch)9.6V9.6V(0.1V)0V0V0V0V9.6V(0.1V)0V0V0V0V(9.6V)0.1V(9.6V)0.1VDOLBYON : 0VMAIN CIRCUITAMECHANISM CIRCUIT (DECK1)BMECHANISM CIRCUIT (DECK2)CCP901CS951CP902CS971Q806DTA143EUT106MOTOR DRIVE CONT.Q8042SD592ARSTAMOTOR DRIVECP3051234Z97112345674.7K50K25K4.7K4.7K4.7K50K50K50K50K25K25KABDCIC9710N2180RLC1PHOTOINTERRUPTERCA BQ8032SD592ARSTAMOTOR DRIVEQ805DTA143EUT106MOTOR DRIVE CONT.CP3061234123456789123456789Q8072SB621ARSTASOLENOID DRIVEQ809DTC143EUT106SOLENOID DRIVEQ810DTC143EUT106SOLENOID DRIVEQ8082SB621ARSTASOLENOID DRIVED LEKCAPSTANMOTOR(DECK1)ABMCAPSTANMOTOR(DECK2)ABM123456789123456789R80610KR802560R823560R824560R812560R81110KR814470R8182.2R8053.9KR80310KR81010KR8083.9KVR8035K(B)VR8015K(B)R8202.2R813470BACR952820D951MA165TASOLENOIDS951(MODE)S953(CrO2)S952(HALF)S973(CrO2)S976(METAL)S972(HALF)S971(MODE)S974(R.REC.INH.)S975(F.REC.INH.)R972820D971MA165TASOLENOIDDIC9510N2180RLC1PHOTOINTERRUPTERR95339K1234AGHBQSPFR97339K1234:POSITIVE VOLTAGE LINE5V10.3V5V10.3V5V10.3V5V5V10.3V0V10.3V0V0V10.2V0V10.2V0V10.3V0V10.3V0V0V9.8V5V0V5VTAPE SPEEDADJ.(DECK1)0V5V5V0V0V0.8VTAPE SPEEDADJ.(DECK2)TP609CN601CN901IC701M38503M2406FSYSTEM CONTROLECABDJIHGFPQRJEDGACEEDACBIHFQ701Q703Q7022SD1819ARTXINTERFACE132X701(8MHz)C B A FIOJKL M NG HQ6042SC3940AQSTAREGULATORR60310TP604+10V(D.GND)R6020.33R6300.33Q6022SD2144STAPOWER SUPPLY1234567891011121314151620171819SYNCCS+B (10V)D.GNDSCLKDATADECK REQNCTAPE Lch INA.GNDTAPE Rch INTAPE Lch OUTTAPE Rch OUTRS A.GNDEARTHTERMINALCIRCUITDW601E112345678Q701,7032SD1819ARTXINTERFACEQ706DTC114EUT106RESET SIGNALGENERATORC7070.01D706MA111TXD710MA111TXBDR745100R7101KR7241KR7231KD707MA4051MTAL702R7381KR7471KR7044.7KR7441KR7274.7KR7084.7KR7294.7KR74122KD708MA111TXR74347KR70547KD709MA111TXR72810KR722100R7035.6KR732100KR7214.7KR7354.7KR63247KR609100D651MA165TAD652MA165TAR604330C60216V220C60516V220C60316V47D606MA4056MTAC6040.01R6061.5KR71268KR71868KR70110KR70210KC7050.01C7010.01R711100KC7026.3V100C70650V3.3D705MA111TXR73710KR73610KD701MA111TXNCNCNCNCNCNCToSOUND PRCESSOR(SH-EH770) &CD CHANGER(SL-EH770)CT.GNDRchOUTLchOUTRchINLchINA.GND123456789 10 11 12 13 14 15 16 17 18 19 20 21313233343536373839404142222324252627282930KEY1VCCVREFAVSSLMTPL1M1HALTREQCSCLKVSSVSSXOUTXINRESETREV LEDFWD LEDCRO2 2METAL 2DATA INDATA OUTCRO2 1MODEHALF1TPSA LATCHPL2M2ENC/DECDOLBY ON/OFFE CSNCKEY2NCNCA CLKA DATALED CNTAD SWPHOTO1 TPHOTO2 TFE D A B CR23210KFGSL70110H:POSITIVE VOLTAGE LINE: PLAYBACK SIGNAL LINE: RECORDING SIGNAL LINE5V1.9V0.1V0V1.8V0V0V0.6V0.2V0V5V0V0V9.4V5V5.7V10.3V9.6V10.3V10.3V5V9.6V5V0V5V2.9V5V5V5V5V5V2.7V0V0V0V0V0V(5V) 0V0V5VSTOP : 0V5V5V0V5V1.4V2.2V2.5V0V0V0V0V0V0.5V1.6V1V5V5V2V2.3V1.2VP-PF=8MHz2.4VP-PF=8MHz4.8V0VT16ms.3.6V0VT16ms.3V0VT16ms.0V4.8VT16ms.5ms. 2V/DIV.0V4.8V0V(5V)FW901OPERATION CIRCUITE12345678D907SML79455C()Q901DTA143EUT106LED DRIVED905SML79455C()Q902DTC143EUT106LED DRIVES907()S906()S905(DOLBY NR)S904(REC PAUSE)S903(TAPE EDIT)S901(OPEN)S900()S915(OPEN)S909()S910()S912(DECK 1/2)S911(REV MODE)S914(COUNTERRESET)S913(COUNTERDISPLAY)R9112.2KR9101.8KR9091.5KR9081.2KR9251KR924820R9052.2KR9041.8KR9031.5KR9021.2KR9011KR9063.3KR900820R915680R914330R916330Q904DTC143EUT106LED DRIVEQ903DTC143EUT106LED DRIVER917680D904MA111TXIC202MC14066BFELSIGNAL CONT.8910111213765432114MAIN CIRCUITAABCDEFGQ108DTC143EUT106SWITCHINGR12622KR234100C21616V10C21516V10R233100R22647KR20847KR22547KR20747K:POSITIVE VOLTAGE LINE5V5V0V5V0V0VSTOP :0V5V4.2V0V0V0V2.6V0V4.7V8.3V(0V)9.6V4.7V4.7V4.7V8.3V(0V)8.3V (0V)(5V) 0V9.6V:PLAYBACK SIGNAL LINE