Technics-RSDV-250-Service-Manual电路原理图.pdf

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1、http:/servis- Service 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 htt

2、p:/servis- 5 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 cont

3、rol 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

4、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- 5.1 Cassette tape to be prepared TOP PREVIOUS NEXT lMetal tape: Recorded music tape with only one erasure prevention tab intact./

5、(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- 5.2 Selecting service mode TOP PREVIOUS NEXT 1. Turn on the power to the unit. 2. Make sure that no tape is inserted in th

6、e 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%20S

7、ettingsAdminPlochaSCHMATAVIDEAPAN. http:/servis- 5.3 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

8、 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

9、 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

10、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 caps

11、tan 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 t

12、he 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 s

13、witch (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 replac

14、e) 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- 5.4 Deck 2 mechanism check TOP PREVIOUS NEXT 1. Press the Deck 1/de

15、ck 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

16、 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 Rew

17、ind 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. Ope

18、n 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 t

19、ime the STOP button is pressed, the fault items are displayed in sequence. Fig. 5-3. 20. 10. 2004file:/C:Documents%20and%20SettingsAdminPlochaSCHMATAVIDEAPAN. http:/servis- 5.5 Exiting service mode TOP PREVIOUS NEXT 1. Press the STOP button for more than 5 seconds (Diagnostic contents stored in memo

20、ry 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- 13.3 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 fo

21、rward 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

22、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)

23、 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- 13

24、.4 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.) Norma

25、l 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

26、 (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- 14.1.1 Connection Diagr

27、am Between the Mechanism Assy and Power Supply/(MOTOR and Plunger) TOP PREVIOUS NEXT Fig. 14-1. TOP PREVIOUS NEXT http:/servis- 14.1.2 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%20

28、and%20SettingsAdminPlochaSCHMATAVIDEAPAN. 3 6 4 MAIN CIRCUITA B A C B A CP101 1 2 3 4 5 CP102 1 2 3 4 5 IC103 BA7755AF R/P SELECT 124 678 3 5 Q301 2SD1819ARTX BIAS OSC CONT. Q306 DTC144EUT106 BIAS OSC CONT. Q305 DTC144EUT106 BIAS OSC CONT. Q302 2SD1328STXRA SWITCHING (REC:ON) Q303,304 2SD1450RSTA BI

29、AS OSC Q303 Q304 Q102 2SJ164RTA HEAD SELECT (REC:ON) Q106 Q103,104 2SJ164QTA HEAD SELECT (PLAY:ON) Q104 Q103 Q105,106 2SD1819ARTX MUTING Q105 Q101 2SJ164RTA HEAD SELECT (REC:ON) S G D S G D D G S D G S L301 IC101 CXA1998BQT6 R/P EQ AMP 1 25 Lch Rch PLAYBACK HEAD DECK1 Lch ERASE HEAD DECK2 Rch R/P HE

30、AD R106 330K C102 680P C101 680P R105 330K C143 470P C115 470P R101 5.6K R103 100K C150 10V100 C123 25V4.7 R119 22 R118 22 C130 16V100 C119 50V1 C140 16V10 C131 470P C129 10V22 R117 1K C117 330P R111 82 R113 12K C111 6.3V47 R109 1K C109 0.018 R141 100 R142 100 R144 100 C144 470P C104 680P C110 0.018

31、 C112 6.3V47 R112 82 R114 27K R110 1K C114 50V2.2 C113 50V2.2 R102 5.6K R104 100K C116 470P C125 3300P C126 3300P C118 330P R154 2.7K C120 50V1 R13333K R1304.7M C1396.3V47 R132 27K C301 16V470 C303 6800P C302 100V2.2 N R313 1 TP302TP301 R302 1.8K R301 10K D301 MA111TX C305 50V0.1 C304 16V100 R303 2.

32、2K R304 15K R305 18K R306 33K R138 4.7K R137 2.2K C309 6.3V47 R308 1K C311 0.01 C310 0.01 C308 3300P R307 2.2 C323 1000P C307 1000P R309 4.7K R310 4.7K R311 4.7K L302 100H R134 3.9K R135 6.8K D102 MA111TX D101 MA111TX R15822K R127 4.7K R125 100K C138 0.047 C137 50V0.1 C13550V1 C13650V1 R120 100K C13

33、2 470P R153 2.7K R157 22K C103 680P R143 100 R107 10K R131 330K R108 10K LATCHES SHIFT REGISTERS PBEQ CTL AGC AMSRECEQ 20K20K 10K MUTE 40K AGC GAIN 210K 210K 210K 210K IREF 40K AGC GAIN 10K RECEQ RFS 123456789101112 13 23 2437 38 39 40 41 42 43 44 45 46 47 48 20K20K 252627282930313233343536 REQEQ CT

34、L 22 21 20 19 18 17 16 15 14 C306 0.039 R136 2.2K C124 25V4.7 9.6V :POSITIVE VOLTAGE LINE: PLAYBACK SIGNAL LINE: RECORDING SIGNAL LINE 9.6V 0V0V (0.2V) 9V 0V0V 0V0V (8.9V) 0V (0.7V) 0V 0V 0V 0V (0.7V) 0V (8.9V) (0.2V) 9V 0V0V 6V 9.6V0V 0V (9.5V) 0V (0.7V) 0V 0V (0.6V) 0V 0V (0.6V) 0V (0.7V) 0V (0.8V

35、) 0V (0.6V) 0V 9.5V 9.5V (0.6V) 0V 0V (0.1V) (0.1V) 0V ERASE CURRENT CHECK POINT 5V0V4.5V4.5V4.5V4.5V4.5V8.6V5V0V (1.6V) 0V (0.2V) 5V 5V (9.6V) 0.1V (0.1V) 9.6V (0.2V) 9.6V (0.2V) 5V (5V) 0.2V 4.5V9V9V4.5V4.5V4.5V4.5V0V5V0V 1.2V 2.6V 2.6V 1.3V 0V 0V 0V 0V 1.3V 2.6V 2.6V 1.2V DOLBY Rch F D E CNRMO B

36、A IC201 CXA1552M-T4 DOLBY B NR 123458 912131415 ATT2 ATT2 ATT3 ATT3 ATT1 ATT1 SCDET SCDET 67 101116 ON/OFF R/P B A J I A B A B IC102 MC14066BFEL DECK 1/2 SELECT 1234567 891011121314 Q107 DTA143EUT106 R/P SELECT Q202 DTA143EUT106 ENC/DEC SELECT Q201 DTA143EUT106 DOLBY ON/OFF R209 1K R725 2.2K R730 2.

37、2K R726 2.2K C134 470P C133 470P C142 0.1 C203 25V4.7 R211 10K C207 270P L201 R218 2.2K R217 2.2K C211 1500P C220 10V470 C219 16V100 C241 0.01 R237 22 R220 22 C239 680P C205 50V1 R221 100 R230 1K R223 10K C223 25V4.7 C221 50V0.68 R213 3K R215 12K C213 25V4.7 C225 25V4.7 C217 50V0.1 R222 100 R219 18K

38、 C206 50V1 C240 680P C212 1500P R212 10K R210 1K C204 25V4.7 C208 270P L202 C214 25V4.7 R216 12K C226 25V4.7 R224 10K R231 1K R151 100K R140 47K R152 100K R139 47K C141 50V1 R148 5.6K VR102 20K(B) R150 5.6K VR104 20K(B) R214 3K C222 50V0.68 R149 5.6K VR103 20K(B) R147 5.6K VR101 20K(B) C218 50V0.1 D

39、OLBY Lch C R122 10K R121 10K :POSITIVE VOLTAGE LINE: PLAYBACK SIGNAL LINE: RECORDING SIGNAL LINE 5V 5V 9.6V 9.6V (0.2V) 9.6V 0V (9.5V) 4.8V9.6V4.7V4.7V4.6V4.7V0.4V4.8V 4.8V4.7V1.2V4.7V0.4V4.8V4.6V (0V) 0V 5V 5V5V (0V) 5V (5V) 0V PLAYBACK GAIN ADJ. (DECK1/Lch) PLAYBACK GAIN ADJ. (DECK2/Lch) PLAYBACK

40、GAIN ADJ. (DECK1/Rch) PLAYBACK GAIN ADJ. (DECK2/Rch) 9.6V9.6V (0.1V) 0V0V0V0V9.6V (0.1V) 0V0V0V0V (9.6V) 0.1V (9.6V) 0.1V DOLBY ON : 0V MAIN CIRCUITA MECHANISM CIRCUIT (DECK1)B MECHANISM CIRCUIT (DECK2)C CP901 CS951 CP902CS971 Q806 DTA143EUT106 MOTOR DRIVE CONT. Q804 2SD592ARSTA MOTOR DRIVE CP305 1

41、2 3 4 Z971 1234567 4.7K 50K 25K 4.7K 4.7K 4.7K 50K 50K 50K 50K 25K25K A B D C IC971 0N2180RLC1 PHOTO INTERRUPTER CA B Q803 2SD592ARSTA MOTOR DRIVE Q805 DTA143EUT106 MOTOR DRIVE CONT. CP306 1 2 3 4 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 Q807 2SB621ARSTA SOLENOID DRIVE Q809 DTC143EUT106 SOLENOID DRIVE Q8

42、10 DTC143EUT106 SOLENOID DRIVE Q808 2SB621ARSTA SOLENOID DRIVE D LEK CAPSTAN MOTOR (DECK1) A B M CAPSTAN MOTOR (DECK2) A B M 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 R806 10K R802 560 R823 560 R824 560 R812 560 R811 10K R814 470 R818 2.2 R805 3.9K R803 10K R810 10K R808 3.9K VR803 5K(B) VR801 5K(B) R820

43、2.2 R813 470 B A C R952 820 D951 MA165TA SOLENOID S951 (MODE) S953 (CrO2) S952 (HALF) S973 (CrO2) S976 (METAL) S972 (HALF) S971 (MODE) S974 (R.REC.INH.) S975 (F.REC.INH.) R972 820 D971 MA165TA SOLENOID D IC951 0N2180RLC1 PHOTO INTERRUPTER R953 39K 12 34 A G H B Q S P F R973 39K 12 34 :POSITIVE VOLTA

44、GE LINE 5V 10.3V 5V 10.3V 5V 10.3V 5V 5V 10.3V 0V 10.3V 0V 0V 10.2V 0V 10.2V 0V 10.3V 0V 10.3V 0V 0V 9.8V 5V 0V 5V TAPE SPEED ADJ.(DECK1) 0V 5V 5V 0V0V 0.8V TAPE SPEED ADJ.(DECK2) TP609 CN601 CN901 IC701 M38503M2406F SYSTEM CONTROL E C A B D J I H G F PQR JEDG ACE E D A C B I H F Q701 Q703 Q702 2SD1

45、819ARTX INTERFACE 13 2 X701 (8MHz) C B A FIOJKL M NG H Q604 2SC3940AQSTA REGULATORR603 10 TP604 +10V (D.GND) R602 0.33 R630 0.33 Q602 2SD2144STA POWER SUPPLY 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 20 17 18 19 SYNC CS +B (10V) D.GND SCLK DATA DECK REQ NC TAPE Lch IN A.GND TAPE Rch IN TAPE Lch OUT TAP

46、E Rch OUT RS A.GND EARTH TERMINAL CIRCUIT D W601E1 1 2 3 4 5 6 7 8 Q701,703 2SD1819ARTX INTERFACE Q706 DTC114EUT106 RESET SIGNAL GENERATOR C707 0.01 D706 MA111TX D710 MA111TX BD R745 100 R7101K R7241K R7231K D707 MA4051MTA L702 R738 1K R747 1K R704 4.7K R744 1K R727 4.7K R708 4.7K R729 4.7K R741 22K

47、 D708 MA111TX R743 47K R705 47K D709 MA111TX R728 10K R722 100 R703 5.6K R732100K R7214.7K R7354.7K R632 47K R609 100 D651 MA165TA D652 MA165TA R604 330 C602 16V220 C605 16V220 C603 16V47 D606 MA4056MTA C604 0.01 R606 1.5K R71268K R71868K R70110K R70210K C705 0.01 C701 0.01 R711 100K C702 6.3V100 C7

48、06 50V3.3 D705 MA111TX R73710K R73610K D701 MA111TX NC NC NC NC NC NC To SOUND PRCESSOR (SH-EH770) & CD CHANGER (SL-EH770) CT.GND Rch OUT Lch OUT Rch IN Lch IN A.GND 123456789 10 11 12 13 14 15 16 17 18 19 20 21 313233343536373839404142222324252627282930 KEY1VCC VREF AVSS LMT PL1 M1 HALT REQ CS CLK

49、VSS VSS XOUT XIN RESET REV LED FWD LED CRO2 2 METAL 2 DATA IN DATA OUT CRO2 1 MODE HALF1 TPS A LATCH PL2 M2 ENC/DEC DOLBY ON/OFF E CS NC KEY2 NC NC A CLK A DATA LED CNT AD SW PHOTO1 T PHOTO2 T F E D A B C R232 10K F G S L701 10H :POSITIVE VOLTAGE LINE: PLAYBACK SIGNAL LINE: RECORDING SIGNAL LINE 5V 1.9V 0.1V 0V 1.8V 0V 0V 0.6V 0.2V 0V 5V 0V 0V 9.4V5V 5.7V 10.3V9.6V 10.3V 10.