Teac-Tascam302MK2-tape-sch 电路图维修手册.pdf

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1、TASCAM 302MKII SCHEMATIC DIAGRAMS CONTENTS 目次 MAIN PCB (1/2), TR1 PCB, TR2 PCB, TR3 PCB.Page 1/7 MAIN (2/2) PCB.Page 2/7 ANALOG SW PCB.Page 3/7 EQ-BIAS PCB.Page 4/7 FRONT PCB, CONTROL PCB, KEY 1 PCB, KEY 2 PCB.Page 5/7 PHONE PCB.Page 6/7 TRANS 1 PCB, TRANS 2 PCB, POWER SW PCB, SW PCB.Page 7/7 回路図 Ra

2、dioFans.CN 收音机爱好者资料库 2134567 B A C D E SCHEMATIC DIAGRAM302MKIIMAIN PCB (1/2), TR1 PCB, TR2 PCB, TR3 PCB （Page 1/7） 2 Mecha R ch TO VR Cr2 L ch TO VR 0.23A 1 3 3 METAL2 PWR DOWN L ch FROM VR REC SIGNAL Lch2 SHORT:High Speed 1 REMOTE 7 23 1 Mecha POWER MUTE L ch TO VR +2.7V B/C/OFF1 Norm Speed/PLAY:

3、VARI 11 to 13 0.15A DC12V HIGH GND 12 GND RECM1 LINE IN Rch2 from LEVEL VR +12V LEVEL BIAS1 PITCH CON2 B/C/OFF2 FRONT PCB 1MECHA 0.35A TX CLK 1 SPDCOM1 2 2 2 +5V BALANCE GND METAL1 *CUE1 +12V PITCH CON1 LEVEL Norm Speed/REC:VARI 12 to 13 +7V C.T AC3.4V 3 56 1 LINE IN Rch1 from LEVEL VR +7V +5V Cr1 +

4、5V HS BALANCE To EQ_BIAS PCB DC30V TX DATA 1 3 to LEVEL VR Rch1 PB IN Lch1 PB IN Rch1 GND PB IN Rch2 +12V GND Hi Speed:VARI 11,12,13 Open TO CONTROL PCB J500 CONTROL IN SPDVAR1 +5V 7 TR3 PCB -7V LINE IN Lch1 from LEVEL VR B/C/OFF1 BIAS2 HS TO CONTROL PCB J505 6 11 J701 to LEVEL VR Lch2 to LEVEL VR L

5、ch1 GND MAIN PCB (1/2) 2MECHA RX CLK 1 To TRANS TR2 PCB 4 1/2 RECM2 LINE IN Lch2 from LEVEL VR PB IN Lch2 REC SIGNAL Rch1 PLAY/*REC1 PLAY/*REC1 -7V JUMP FOR OTHER PLAYM1 B/C/OFF2 PARA PLAY/*REC2 REC SIGNAL Rch2 PLAY/*REC2 HS +5V 3 TO FRONT PCB J509 (ML) DUB PLAYM2 to LEVEL VR Rch2 +12V RX DATA *HS2

6、TR1 PCB 1 FR1,FR2,FR3 FOR EUR,230E-Y,AUS,UK,KOR 1 TO FRONT PCB J509 5 8 J506 REC SIGNAL Lch1 MAIN PCB (2/2) -20V *HS1 HIGH +7V 6 *CUE2 R ch FROM VR 2 4 +7V R ch TO VR 3 3 REMOTE SPDFIX1 R ch FROM VR L ch FROM VR GND 3 1 CONTROL OUT To CONTROL PCB N.C.N.C.N.C. 3 C.W. C.W. C.W. C.W. 1 2 3 4 5 6 7 8 9

7、10 1 2 3 4 5 6 7 7 6 5 4 3 2 1 3 REW2 PLAY/*REC2 PITCH CON1 REW1 16 *SOL2 *SOL1 8 FF1 PLAYM2 *CUE2 PLAY1 102 CUERM2 REW2 FF2 6 PLAY2 *HS1 6CUERM2 PLAY2 RECM2 4 NORMAL FF2 PITCH CON2 REW1 DUAL SPD1 9 FF1 *SOL1 NORMAL 6 +2.7V 11 6 *SOL2 SPD2 PLAY1 -20V *CAP2 1/2 3 3 SPDVAR13 7 SPDFIX24 SPDFIX2 TX DATA

8、5 SCLK1 4 2 2 RX CLK2 5CUERM1 +5V5 Cr11 3 SSEL1 RECM1 TX CLK METAL12 PLAYM1 1 1 SDATA1 +5V4 SPDFIX14 Cr23 2 27 CUERM1 SRESET 5 2 41 SCLK19 -7V TX DATA +7V 3 RX DATA METAL24 4 PLAY/*REC1 4 1 REMOTE REMOTE1 8PWR DOWN 4 7 SRESET7 2 2AC SDATA110 3 SPDVAR2 2 *CUE1 7 RX DATA3 SSEL18 AC 2 2 SPDVAR2 785 5 A

9、C 1 AC1 TX CLK4 3 RX CLK 2 5 1 *CAP1 BIAS2 BIAS1 DUB Q503 DTA124ES C526 0.1(CC) R529 2.7K P506 4P-PH (RED) P301 7P-PH(RED) C532 10/25 Q509 2SC2120Y C522 0.01 D501 1SS133 D507 1N4003 C517 100/16 R504 1K C524 0.01(CC) U509 BA6219 5 6 1 4 8 7 10 2 9 3 FIN RIN GND VREF VCC2 VCC1 OUT2 OUT1 VZ2 VZ1 C529 0

10、.1(CC) D521 1N4003 P101 7P-PH(WHT) 100K(W) Q511 DTC124ES J503 R520 2.2K Q508 DTC124ES D504 LT2A05 D514 LT2A05 Q510 2SC2120Y P505 4P-PH (WHT) 50K(A) R525 22K R506 4.7K C513 100/16 Q506 DTA124ES R51 10K(B) C530 1000/16 R540 1K R516 47K U501 NJM317 INOUT C516 4700/16 D506 LT2A05 C511 4700/25 R510 2.7K

11、C519 1/50 EARTH PLATE U504 TLP521-2 1 2 3 4 8 7 6 5 R538 2.7K P1058P-XH R547 47K C514 100/16 R513 180 R512 470 D508 1N4003 R515 100K 50K(A) C521 100P U510 4053 12 13 2 1 5 3 611 10 9 14 15 4 7 8 16 X0 X1 Y0 Y1 Z0 Z1 INHA B C X Y Z VEE VSS VDD C512 10/25 FR2 RESISFUSE R501 100K C504 4.7/50 R523 240 R

12、545 47(1W) C523 100/16 D525 RD4.7EB2 C506 100/25 D509 1N4003 D510 1N4003 R524 22k R52 22K(B) D515 RD4.7EB2 18K R511 470 U507 4053 12 13 2 1 5 3 611 10 9 14 15 4 7 8 16 X0 X1 Y0 Y1 Z0 Z1 INHA B C X Y Z VEE VSS VDD P11 4P-PH R536 47(1W) Q501 2SC1815GR R521 240 R53 10K(B) U508 BA6219 5 6 1 4 8 7 10 2 9

13、 3 FIN RIN GND VREF VCC2 VCC1 OUT2 OUT1 VZ2 VZ1 D518 1N4003 18K P507 5P-PH Q502 2SA1015GR Q517 DTC124ES R548 22K C515 100/16 U505 NJU3714D 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 P5 P6 P7 P8 VSS P9 P10 P11 P12 SO VDD P4 P3 P2 P1 VSS CLR STB CLK DATA C501 0.022 P15 3P-PH C535 0.047 C508 10

14、/25 R517 200K R54 22K(B) C527 0.01(CC) 18K U503 CXA1511L 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 U506 NJU3714D 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 P5 P6 P7 P8 VSS P9 P10 P11 P12 SO VDD P4 P3 P2 P1 VSS CLR STB CLK DATA FR1 RESISFUSE R508 120 P504 7P-PH R502 47K Q504 2SA1015GR R522 22k R532 10K

15、 R541 10K R531 1K R514 100K R503 2.2K P502 11P-PH C534 0.022 C502 0.01(CC) Q513 2SC2120Y 18K J501 R519 2.2K Q512 2SC2120Y R507 560 C510 4700/16 D511 1N4003 J510 D505 LT2A05 C505 10/35 C507 2.2/50 Q507 DTA124ES P10311P-XH 100K(W) C520 0.1(CC) D517 MTZJ4.3BT72 C533 10/25 P501 8P-EH R533 10K R537 24K C

16、518 100/16 Q514 DTC124ES Q516 DTC124ES FR3 RESISFUSE R542 10K D522 RD4.7EB2 R539 1K D523 RD6.8EB2 J502 C525 0.01(CC) D516 MTZJ2.7BT72 C509 4700/16 R509 3.3K D519 RD4.7EB2 Q515 DTC124ES P503 8P-PH C528 0.01(CC) D524 RD4.7EB2 R527 TP5122K R551 22K R526 7.5K D503 1N4003 D502 MTZJ20C R518 47 R530 1K D52

17、0 RD6.8EB2 P1047P-XH C503 100/50 R52824K D512 1N4003 U502 78M05 INOUT Q505 2SB1134R D513 1N4003 P16 3P-PH P508 7P-PH Double Auto Reverse Cassette Deck302MKII 1 st Issue; January 2002 RadioFans.CN 收音机爱好者资料库 2134567 B A C D E SCHEMATIC DIAGRAM302MKIIMAIN PCB (2/2) （Page 2/7） -7V A C B -7V +7V -7V GND

18、 1 Mecha 2 Mecha RECM1 SLV DUB 1/2 PLAYM1 SLV MST MST SLV HS METAL1 Cr1 RECM1 PLAYM1 HS DUB 1/2 METAL1 Cr1 B/C/OFF1 B/C/OFF1 B/C/OFF2 RECM2 PLAYM2 DUB HS METAL2 Cr2 PARA MST B/C/OFF2 Cr2 METAL2 PLAYM2 RECM2 PARA LINE IN Lch1 SLV OUT Lch1 LINE IN Rch1 SLV OUT Rch1 LINE OUT Lch1 LINE OUT Rch1 LINE IN

19、Lch2 LINE IN Rch2 LINE OUT Lch2 LINE OUT Rch2 to LEVEL VR Lch2 to LEVEL VR Rch2 LINE IN Lch2 from LEVEL VR LINE IN Rch2 from LEVEL VR PB IN Lch2 PB IN Rch2 REC SIGNAL Lch2 REC SIGNAL Rch2 to LEVEL VR Lch1 to LEVEL VR Rch1 LINE IN Lch1 from LEVEL VR LINE IN Rch1 from LEVEL VR PB IN Lch1 PB IN Rch1 RE

20、C SIGNAL Lch1 REC SIGNAL Rch1 LINE IN Lch1 LINE IN Rch1 NR REC OUT Lch2 NR REC OUT Rch2 NR REC OUT Lch2 NR REC OUR Rch2 REC SIG. Rch2 REC SIG. Lch2 REC SIG. Rch2 REC SIG. Lch2 HS METAL HS Cr HS NORMAL LS METAL LS Cr LS NORMAL HS METAL HS Cr HS NORMAL LS METAL LS Cr LS NORMAL -7V +7V SLV +5V +5V GND

21、GND +12V POWER MUTE PLAY/*REC2PLAY/*REC1 PLAY/*REC1 PLAY/*REC2 +5V +5V To 2/1 To 2/1 To 2/1 To 2/1 To 2/1 PLAYM2 B/C/OFF1 B/C/OFF2 MODE 2 MODE 1 SLV,MST LINE OUT Rch1 LINE OUT Lch1 PLAYM2 PB IN Rch2 DUB,HS,1/2 Lch Lch B/C/OFF C B OFF COMMON SEVERAL COMMON/SEVERAL Vcc -7V GND Vcc -7V 4051 January 200

22、2 RadioFans.CN 收音机爱好者资料库 2134567 B A C D E SCHEMATIC DIAGRAM302MKIIANALOG SW PCB （Page 3/7） E D F G LINE OUT Lch1 LINE OUT Rch1 GND REC Sig Rch 1 LINE OUT Rch 1 LINE OUT Lch 1 DUB MST PB IN Rch 1 SLV to LEVEL VR Rch 2 to LEVEL VR Lch 2 LINE OUT Rch 2 REC SIG Rch 2 REC Sig Lch 2 1 2 3 4 5 1/2 PARA -

23、7V +7V PB IN Rch 2 +5V LINE IN Lch 2 1 2 3 4 5 6 7 LINE OUT Lch 2 to LEVEL VR Lch 2 LINE IN Rch 1 LINE IN Lch 1 LINE OUT Rch 2 LINE OUT Lch 2 LINE IN Rch 2 2 3 4 5 6 7 8 to HEAD PHONE Amp Lch 1 to HEAD PHONE Amp Lch 2 to HEAD PHONE Amp Rch 1 to PHONE PCB J601 to HEAD PHONE Amp Rch 2 +7V GND -7V to C

24、ONTROL PCB J507 to METER A/D Lch 2 to METER A/D Rch 1 to METER A/D Lch 1 CPS 1 CPS 2 MST SLV COMMON/SEPARATE +7V -7V Vcc -7V GND Vcc -7V Op Amp 4052 U801,802,901 U803,804,903,904 to MAIN PCB P107 to MAIN PCB P108 to MAIN PCB P109 to MAIN PCB P110 to METER A/D Rch 2 (LINE OUT Rch 1) (LINE OUT Lch 1)

25、1 to LEVEL VR Rch 2 COMMON1 SLV(1) REC Sig Lch 1 SLV(1) MST COM 1 2 1 2 NC Vee Vss Vee 8 +7V 4 7 +7V 8 16 R801 18K R802 18K R803 47K R805 10K R806 68 R807 47K R808 15K R809 10K R81068 R811 330K R812 330K R813100 R814100 R901 18K R90218K R903 47K R905 10K R906 68 R907 47KR909 10K R910 68 R911 330K R9

26、12 330K R914 100 U801 BU4052 12 14 15 11 1 5 2 4 6 10 9 13 3 X0 X1 X2 X3 Y0 Y1 Y2 Y3 INH A B X Y U803ANJM4558D 2 3 1 U803B NJM4558D 6 5 7 U802 BU4052 12 14 15 11 1 5 2 4 6 10 9 13 3 X0 X1 X2 X3 Y0 Y1 Y2 Y3 INH A B X Y U804B NJM4558D 6 5 7 U804A NJM4558D 2 3 1 U902 BU4052 12 14 15 11 1 5 2 4 6 10 9 1

27、3 3 X0 X1 X2 X3 Y0 Y1 Y2 Y3 INH A B X Y U901 BU4052 12 14 15 11 1 5 2 4 6 10 9 13 3 X0 X1 X2 X3 Y0 Y1 Y2 Y3 INH A B X Y U903ANJM4558D 2 3 1 U903BNJM4558D 6 5 7 D801 1SS133 D802 1SS133 D901 1SS133 D902 1SS133 Q901 DTC124ES C8015P C802 4.7/50 C804 4.7/50 C8035P C9015P C902 4.7/50 C903 5P C904 4.7/50 C

28、808 10/25 C809 10/25 C905 1/50 C906 0.22/50 R917 220K C907 0.1/50 C806 0.22/50 R817 220K C807 0.1/50 R916 33KR816 33K R915100 C805 1/50 U905BA335 5 6 1 4 8 7 2 9 3 GND OUT IN N.C. 8 7 DELAY VCC CUP U805 BA335 5 6 1 4 8 7 2 9 3 GND OUT IN N.C. 8 7 DELAY VCC CUP P803 8P-JQ P804 7P-JQ P802 5P-JQ R904 1

29、5K R908 15K R815100 P805 7P-PH 1 2 3 4 5 6 7 P801 10P-JQ 1 2 3 4 5 6 7 8 9 10 P806 11P-PH 1 2 3 4 5 6 7 8 9 10 11 U904B NJM4558D 6 5 7 U904A NJM4558D 2 3 1 R913 100 R918 22K R818 22K D903 1SS133 D804 1SS133 D803 1SS133 D904 1SS133 P809 2P-PH P808 2P-PH R804 15K P810 3P-PH 1 2 3 Double Auto Reverse C

30、assette Deck302MKII 1 st Issue; January 2002 2134567 B A C D E SCHEMATIC DIAGRAM302MKIIEQ-BIAS PCB （Page 4/7） 1 3 1 3 22 1 2 34 6 2 4 6 +7V -7V 1 MECHA 1 2 3 4 5 6 7 8 1 3 1 6 1 3 1 3 22 1 2 34 6 2 4 6 +7V -7V 2 MECHA 1 2 3 4 5 6 7 8 1 3 1 6 METALCrO2 N C M HH HL LL 3 1 2 1 2 3 1 2 3 1 2 3 1 2 3 4 5

31、 6 7 8 9 10 11 1 2 3 4 5 1 2 3 4 5 6 7 8 4 8 4 8 3 3 1 2 1 2 3 31 2 1 2 LS LS PLAY/REC1 HS CUE1 METAL1 CrO21 PLAY/REC2 PLAY1 REC1 CrO21 CUE1 PLAY2 REC2 BIAS2 BIAS1 CUE2 CUE2 CrO22 METAL2 1mecha Rch REC_IN 1mecha Lch REC_IN 1mecha Rch PLAY_OUT 1mecha Lch PLAY_OUT -7 V GND +7 V 2mecha Lch PLAY_OUT 2me

32、cha Rch PLAY_OUT 2mecha Rch REC_IN 2mecha Lch REC_IN PLAY/REC2 CUE2 BIAS1 CUE1 METAL1 CrO21 PLAY/REC1 HS +5 V CrO22 METAL2 6BIAS2 GND GND (+5v) 7+7 V METAL L ch R ch L ch R ch (CC) (CC) (CC) LL METALCrO2 N C M HH H L 100KHz 100KHz (ML)(ML) TP32TP33 TP12TP13 +7V to MAIN PCB to MAIN PCB to MAIN PCB ME

33、TAL (CC) 1 5 1 5 C108 0.001 C203 470P C103 470P C207 10/25 R103 1K Q203 2SC1815GR R203 1K C105 220/10 C106 0.027 C206 0.027 C204 0.027 C104 0.027 Q103 2SC1815GR R101 470 R102 1K R202 1K P101 EH-5P(WHT) C101 330P(CH) C102 390P(CH) C202 390P(CH) C201 330P(CH) R104 47K R105 91K R106 4.7K R1071M R109 1.

34、8K R110 2.2K C109 1/50 R204 47K R205 91KR206 4.7K R207 1M C209 1/50R210 2.2K Q104 DTC143TS Q105 DTC143TS Q106 DTC143TS Q108 2SC1815GR B 6 5 7 UPC4570C A U101 2 3 1 Q204 DTC143TS Q205 DTC143TS Q206 DTC143TS Q208 2SC1815GR Q109 DTA124ES Q112 DTA124ES Q115 DTA124ES Q117 DTC124ES Q118 DTC124ES U102 UPC1

35、297CA 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 VST VR1 VI1 PH1 CI1 CO1 VO11 VO12 GND VCC VR2 VI2 PH2 CI2 CO2 VO21 VO22 VIO Q119 2SC1815GR Q120 2SC1815GR Q122 DTC124ES Q123 2SC1815GR Q125 DTC124ES R116 4.7K R117 33 R118 4.7K R119 1K R132 12K L101 OSC COIL L103 220uH L105 TRAP(100KHz) Q303 2SC1815

36、GR UPC4570C AU301 2 3 1 B 6 5 7 Q305 DTC143TS Q306 DTC143TS Q308 2SC1815GR Q309 DTA124ES Q316 DTA124ES Q317 DTC124ES Q318 DTC124ES R301 470 R302 1K C301 330P C302 390P R304 47K R3071M C305 220/10 C304 0.027 R306 4.7K C303 470P R309 1.8K R305 91K C308 0.001 C306 0.027 R310 2.2KC309 1/50 R332 12K Q403

37、 2SC1815GR R403 1K C401 330P C402 390P R404 47K C403 470P R405 91K C407 10/25 R406 4.7K R410 2.2K Q406 DTC143TS Q408 2SC1815GR C409 1/50 L305 TRAP(100KHz) L405 TRAP(100KHz) R432 12K C126 10P(CC) C125 10/25 C118 100/25 C117 0.0047 C116 0,001 C115 0.001 C114 0.015 C113 0.01(PP) C313 0.01(PP) C314 0.01

38、5 C315 0.001 L301 OSC COIL Q320 2SC1815GR C316 0,001 C326 10P(CC) C325 10/25 C318 100/25 C317 0.0047 C428 150P(CC) R316 4.7K R317 33 R318 4.7K R319 1K R320 4.7K L303 220uH Q324 DTC124ES P102 2P EH(WHT) 1 2 R120 4.7K Q304 DTC143TS R111 180 R211 180 R311 180 R411 180 C128 150P(CC) C205 220/10 L102 220

39、uH R121 150K C121 0.01 R122 33K C119 100P(CC) C122 560P(CC) C123 0.022 C124 0.068 R222 33K C221 0.01 R221 150K C224 0.068 C223 0.022 C222 560P(CC) C219 100P(CC) R322 33K C319 100P(CC) C323 0.022 C324 0.068 R422 33KC421 0.01 R421 150K C424 0.068 C423 0.022 C422 560P(CC) C419 100P(CC) R209 1.8K R409 1

40、.8K R11 100(B) R108 82 R208 82 C208 0.001 R21 100(B) R31 100(B) R308 82 R41 100(B) C408 0.001 Q319 2SC1815GR Q322 DTC124ES Q323 2SC1815GR C110 10/25 C210 10/25 C111 10/25 C211 10/25 C112 10/25 R115 4.7K R114 4.7K C310 10/25 C311 10/25 R314 4.7K R315 4.7K R113 1K R213 1K R313 1K R413 1K L304 HXCOIL L

41、404 HXCOIL L104 HXCOIL L204 HXCOIL R303 1K R402 1K Q3212SA1015GR C107 10/25 Q111 DTC124ES Q311 DTC124ES R128 4.7K R129 10K C130 220/10 C129 1/50 R133 10K R333 10K R329 10K R328 4.7K C329 1/50 C330 220/10 Q307 2SC1815GR C307 10/25 D301 MTZJ3.3B D101 MTZJ3.3B P301 EH-5P(RED) P302 2P EH(RED) 1 2 R223 2

42、.2K R124 100 R126 JUMP R127 1.5K R125 1.5K R131 JUMP R423 2.2K R323 2.2K R324 100 R326 JUMP R325 1.5K R331 JUMP 6P_2 PH-6P(WHT) R22 4.7K(B) R12 4.7K(B) R42 4.7K(B) R32 4.7K(B) C120 200P (PL) 100V C220 200P (PL) 100V C420 200P (PP) 100V C320 200P (PP) 100V Q101 2SC2240GR Q102 2SC2240GR Q202 2SC2240GR

43、 Q302 2SC2240GR Q402 2SC2240GR 6P_1 PH-6P(WHT) L205 TRAP(100KHz) Q404 DTC143TS Q405 DTC143TS C406 0.027 R408 82 C4040.027 R407 1M C405220/10 R327 1.5KQ325 DTC124ES R123 2.2K Q121 2SA1015GR R321 150KC321 0.01 C322 560P(CC) R330 560 Q310 DTA124ES Q110 DTA124ES R312 JUMP R130 560 Q124 DTC124ES R112 JUM

44、P C328 150P(CC) C228 150P(CC) R232 12K U302 UPC1297CA 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 VST VR1 VI1 PH1 CI1 CO1 VO11 VO12 GND VCC VR2 VI2 PH2 CI2 CO2 VO21 VO22 VIO L302 220uH P104 7P-JQ P103 11P-JQ P105 8P-JQ Q301 2SC2240GR Q315 DTA124ES Q107 2SC1815GR Q116 DTA124ES Double Auto Reverse Ca

45、ssette Deck302MKII 1 st Issue; January 2002 2134567 B A C D E SCHEMATIC DIAGRAM302MKIIFRONT PCB, CONTROL PCB, KEY 1 PCB, KEY 2 PCB （Page 5/7） KEY1 PCB KEY2 PCB TO MAIN PCB MECHA I MECHA II 1 2 3 4 5 1 2 3 4 5 6 7 1 2 4 5 6 7 2 3 4 5 CONTROL PCB FRONT PCB TO AN_ SW PCB 1 2 3 1 1 2 3 1 1 9 8 7 6 5 4 3

46、 2 1 9 1 2 3 4 5 6 7 8 +5V GND TO MAIN PCB P101, P301 REC LEVEL 1REC BALANCE 1 REC BALANCE 2REC LEVEL 2 OFF B B OFF 3 1 1 C 4 C 3 4 DOLBY NR 1 DOLBY NR 2 PITCH CONT 1 PITCH CONT 2 TO MAIN PCB P505,P506 TO MAIN PCB P503 OFF SLV MSTR SEPARATE (CC)(CC) 3 2 2 3 3 P806P502 TO MAIN PCB P507 3 REC(REV) COMMON CASS CrO2 REC(FWD) METAL DIR REC(REV) COMMON CASS CrO2 REC(FWD) METAL TX CLK B1 REC A2 KEY2 REEL S2 B2 DIR2 TAPE2 B7 B1 B6 B3 END2 TAPE2 DIR2 B3 B6 B7 B2 REC A2 REC B2 REC B2 REC B1 END2 RX CLK KEY4 KEY3 TX DATA RX DATA RX DATA Tx CLK REMOTE REC B1 DIR REMOTE B0 B0 A13 TAPE1