Rane MP 22 Mixer Schematics 电路图.pdf

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1、Schematic-1 RadioFans.CN 收音机爱 好者资料库 Schematic-2 RadioFans.CN 收音机爱 好者资料库 CHECKED:DRAWN: SHEET:10802 47th Avenue West Mukilteo WA 98275-5098 S.HeadrickR.Harrison 17 MP 22 LEFT INPUTS & EQ 521-354A H:MP22521-354.SCH12-Feb-1997 of ACTION: +15V J1A LEFT PH/LINE 1 R371 47.5K L1 3T C1 150PF R32 90.9K R36 7

2、.5K R44 162 -15V C5 .036 + C9 100/10 C13 22/25 R48 20K R97 40.2K R109 100K C14 22/25 J3B J3A LEFT LINE 5 J2B LEFT LINE 4 J2A LEFT LINE 3 S3A R151 100 C100 1.0 C101 1.0 C102 1.0 R158 3.01K R162 51.1K R166 8.45K C15 22/25 R110 100K C16 22/25 R174 10K A LEFT A-CUE SH 6 B LEFT A-BUS SH 3 & 4 3 2 1 84 Z6

3、A TL072 3 2 1 84 Z7A TL072 R5A 20KB R6A 20KB R4A 20KB R3B 20KB C116 .01 C117 .01 C137 .0033 R191 5.62K R195 511K +15V -15V R199 4.02K C149 330PF R211 301K 3 2 1 84 Z8A TL072 C118 .01 R200 4.02K R215 301K C153 150PF -15V +15V 3 2 1 84 Z9A TL072 R201 4.02K C138 .0033 C139 .0033 C154 150PF R49 20K R219

4、 7.5K C119 .01 C161 47PF J1B LEFT PH/LINE 2 R372 47.5K L2 3T C2 150PF R33 90.9K R37 7.5K R45 162 +15V C6 .036 + C10 100/10 C17 22/25 R50 20K R98 40.2K R111 100K C18 22/25 C120 .01 C162 47PF S6A R152 100 C103 1.0 C104 1.0 C105 1.0 R159 3.01K R163 51.1K R167 8.45K C19 22/25 R112 100K C20 22/25 R175 10

5、K C165 330pF C LEFT B-CUE SH 6 D LEFT B-BUS SH 3 & 4 3 2 1 84 Z10A TL072 3 2 1 84 Z11A TL072 R9A 20KB R10A 20KB R8A 20KB R7A 20KB C121 .01 C122 .01 C140 .0033 R192 5.62K R196 511K +15V -15V R202 4.02K C150 330PF R212 301K 3 2 1 84 Z12A TL072 C123 .01 R203 4.02K R216 301K C155 150PF -15V +15V 3 2 1 8

6、4 Z13A TL072 R204 4.02K C141 .0033 C142 .0033 C156 150PF R51 20K R220 7.5K C21 22/25 R52 20K R99 40.2K R113 100K C22 22/25 LEFT LINE 6 C23 22/25 R53 20K R100 40.2K R114 100K C24 22/25 C25 22/25 R54 20K R101 40.2K R115 100K C26 22/25 C27 22/25 R55 20K R102 40.2K R116 100K C28 22/25 +15V -15V +15V -15

7、V A-BUS B-BUS 5 6 7 Z1B 4574 3 2 1 411 Z1A 4574 5 6 7 Z2B 4574 3 2 1 411 Z2A 4574 3 2 1 411 Z3A TL074 10 9 8 Z3C TL074 3 2 1 411 Z4A TL074 12 13 14 Z4D TL074 R168 8.45K C166 330pF R169 8.45K R117 100K R118 100K PHONO DEFEAT PHONO DEFEAT EQ ENGAGE EQ ENGAGE FADER FADER BASS (100Hz) MID (1.6KHz) HI-MI

8、D (4KHz) TREBLE (10KHz) BASS (100Hz) MID (1.6KHz) HI-MID (4KHz) TREBLE (10KHz) BUS-A INPUT SELECT B-BUS INPUT SELECT -15V +15V -15V +15V -15V +15V -15V 5 6 7 Z5B TL074 10 9 8 Z5C TL074 10 9 8 Z21C TL074 5 6 7 Z21B TL074 PH1/L1 L2 L3 L4 PH2/L2 L4 L5 L6 TRIM TRIM R12A 10KA R11A 10KA R13A 10KA TRIM R14

9、A 10KA TRIM R15A 10KA R16A 10KA TRIM TRIM S1A S2A S5A S4A OUT IN OUT IN CW CWCW CW CW CW UP CW CW CW CW CW CW CW CW UP R2A 20KA R1A 20KA J30-7 J30-4 J30-5 J30-13 J30-6 J30-10 ON FRONT PANEL PCBON REAR PCB J17-2 C29 22/25 C37 22/25 C228 22/25 C229 22/25 C230 22/25 C231 22/25 C133 4.7/50 C134 4.7/50 J

10、32-1 +15V+15V J32-2 -15V-15V 1 2 3 4 5 1 2 3 4 5 BOOST CUT BOOST CUT -15V +15V R38 100K R39 100K R40 100K R41 100K J37-4 ON HEADPHONE PCB J37-2 J37-1,3 NOTES (UNLESS OTHERWISE SPECIFIED) 1. ALL RES 1/4W, 1% METAL FILM 2. ALL SWs SHOWN IN THEIR OUT OR OFF POSITION 3. ALL CAPS W/O VOLTAGE NOTED ARE 10

11、0V POLY FILM 4. CAP TYPES: MP- METAL POLY, CD-CERAMIC DISC, MC-MULTI LAYERED CERAMIC DISC CHANGED MANY VALUES FOR COMMONALITY RadioFans.CN 收音机爱 好者资料库 CHECKED:DRAWN: SHEET:10802 47th Avenue West Mukilteo WA 98275-5098 S.HeadrickR.Harrison 27 MP 22 RIGHT INPUTS & EQ 521-355A H:MP22521-355.SCH12-Feb-19

12、97 of ACTION: J1C RIGHT PH/LINE 1 R30 47.5K L3 3T C3 150PF R34 90.9K R42 7.5K R46 162 C7 .036 + C11 100/10 C84 22/25 R89 20K R103 40.2K R141 100K C85 22/25 J3D J3C RIGHT LINE 5 J2D RIGHT LINE 4 J2C RIGHT LINE 3 S3B R156 100 C110 1.0 C111 1.0 C112 1.0 R160 3.01K R164 51.1K R170 8.45K C86 22/25 R142 1

13、00K C87 22/25 R189 10K E RIGHT A-CUE SH 6 F RIGHT A-BUS SH 3 & 4 5 6 7 Z6B TL072 5 6 7 Z7B TL072 R5B 20KB R6B 20KB R4B 20KB R3B 20KB C125 .01 C126 .01 C143 .0033 R193 5.62K R197 511K R205 4.02KC151 330PF R213 301K 5 6 7 Z8B TL072 C127 .01 R206 4.02K R217 301K C157 150PF 5 6 7 Z9B TL072 R207 4.02K C1

14、44 .0033 C145 .0033 C158 150PF R90 20K R221 7.5K C128 .01 C163 47PF J1D RIGHT PH/LINE 2 R31 47.5K L4 3T C4 150PF R35 90.9K R43 7.5K R47 162 C8 .036 + C12 100/10 C88 22/25 R91 20K R104 40.2K R143 100K C89 22/25 C129 .01 C164 47PF S6B R157 100 C113 1.0 C114 1.0 C115 1.0 R161 3.01K R165 51.1K R171 8.45

15、K C90 22/25 R144 100K C91 22/25 R190 10K C167 330pF G RIGHT B-CUE SH 6 H RIGHT B-BUS SH 3 & 4 5 6 7 Z10B TL072 5 6 7 Z11B TL072 R9B 20KB R10B 20KB R8B 20KB R7B 20KB C130 .01 C131 .01 C146 .0033 R194 5.62K R198 511K R208 4.02KC152 330PF R214 301K 5 6 7 Z12B TL072 C132 .01 R209 4.02K R218 301K C159 15

16、0PF 5 6 7 Z13B TL072 R210 4.02K C147 .0033 C148 .0033 C160 150PF R92 20K R222 7.5K C92 22/25 R93 20K R105 40.2K R145 100K C93 22/25 RIGHT LINE 6 C94 22/25 R94 20K R106 40.2K R146 100K C95 22/25 C96 22/25 R95 20K R107 40.2K R147 100K C97 22/25 C98 22/25 R96 20K R108 40.2K R148 100K C99 22/25 A-BUS B-

17、BUS 10 9 8 Z1C 4574 12 13 14 Z1D 4574 10 9 8 Z2C 4574 12 13 14 Z2D 4574 5 6 7 Z3B TL074 12 13 14 Z3D TL074 5 6 7 Z4B TL074 10 9 8 Z4C TL074 R172 8.45K C168 330pF R173 8.45K R149 100K R150 100K ON FRONT PANEL PCB A-BUS INPUT SELECT B-BUS INPUT SELECT EQ ENGAGE FADER EQ ENGAGE FADER BASS (100Hz) MID (

18、1.6KHz) HI-MID (4KHz) TREBLE (10KHz) BASS (100Hz) MID (1.6KHz) HI-MID (4KHz) TREBLE (10KHz) PHONO DEFEAT DEFEAT PHONO 3 2 1 411 Z5A TL074 14 13 12 Z5D TL074 14 13 12 Z21D TL074 3 2 1 411 Z21A TL074 PH1/L1 L2 L3 L4 PH2/L2 L4 L5 L6 R15B 10KA R16B 10KA TRIM TRIM R11B 10KA R12B 10KA TRIM TRIM R13B 10KA

19、R14B 10KA TRIM TRIM S1B S2B S4B S5B OUT IN OUT IN CW CW CWCWCWCW UP CW CW CW CW UP CW CW CW CW ON REAR PCB J30-1 J30-2 J30-3 J30-11,12 J30-8 J30-14 R1B 20KA R2B 20KA C232 22/25 C233 22/25 C234 22/25 C235 22/25 C236 22/25 C237 22/25 -15V +15V +15V -15V C135 4.7/50 10 6 7 8 9 10 6 7 8 9 BOOST CUT BOOS

20、T CUT C136 4.7/50 R121 100K R125 100K R126 100K R260 100K J17-1 ON HEADPHONE PCB J37-1,3 SEE NOTES ON 521-259 SH 1 CHG MANY VALUES FOR COMMONALITY CHECKED:DRAWN: SHEET:10802 47th Avenue West Mukilteo WA 98275-5098 S.HeadrickR.Harrison 37 MP 22 LFT & RGHT AUX INPUTS 521-356A H:MP22521-356.SCH12-Feb-1

21、997 of ACTION: +15V J7A LEFT AUX LINE R223 30.1K LEFT A-BUS SH 1 & 4 R43A 20KB LEFT B-BUS SH 1 & 4 R224 30.1K R225 30.1K R226 30.1K C30 22/25 R231 100K -15V +15V C31 22/25 R120 100K R233 301 J5A J5C C32 22/25 I LEFT PRE-PROG SH 4 R246 10K R247 10K K J C34 22/25 R269 1K R56 20K C35 22/25 R370A 50KA C

22、36 22/25LEFT PROG SH 4 FROM MIC SH 7 CROSSFADER LEFT MASTER LOOP IN LEFT MASTER LOOP OUT 10 9 8 Z15C TL072 B D J7C RIGHT AUX LINE R227 30.1K RIGHT A-BUS SH 2 & 4 R43B 20KB RIGHT B-BUS SH 2 & 4 R228 30.1K R229 30.1K R230 30.1K C38 22/25 R232 100K C39 22/25 R124 100K R234 301 J5A J5C C40 22/25 L RIGHT

23、 PRE-PROG SH 5 R250 10K R251 10K M C42 22/25 R271 1K R57 20K C43 22/25 R370B 50KA C44 22/25RIGHT PROG SH 5 CROSSFADER RIGHT MASTER LOOP IN RIGHT MASTER LOOP OUT 14 13 12 Z15D TL072 F H ON FRONT PCB ON FRONT PCB LEVEL LEVEL C169 15pF -15V ON FRONT PCB ON FRONT PCB C225 15pF CW RIGHT ASSIGN CW ON REAR

24、 PCB LEFT ASSIGN J42-4 J42-1 J42-5 J42-3 J42-2 J37-8 J18-1 ON HEADPHONE PCB J37-6 J17-4 J22-10 J22-12 J22-2 ON HEADPHONE PCB J22-4 ON HEADPHONE PCB ON HEADPHONE PCB J37-20 J37-14 J37-18 J37-16 R245 51.1K R119 51.1K R248 51.1K R270 51.1K R252 51.1K R123 51.1K R272 51.1K R249 51.1K 5 6 7 Z16B TL074 3

25、2 1 411 Z16A TL074 12 13 14 Z16D TL074 10 9 8 Z16C TL074 1 2 3 J22-1 J22-3 & 5 4 5 6 SEE NOTES ON 521-259 SH 1 R400 10K R401 10K U METER MONO PGM 8 3 2 1 4 Z14A TL072 5 6 7 Z14B TL072 CHG MANY VALUES FOR COMMONALITY CHECKED:DRAWN: SHEET:10802 47th Avenue West Mukilteo WA 98275-5098 S.HeadrickR.Harri

26、son 47 MP 22 LEFT OUTS 521-357B H:MP22521-357.SCH12-Feb-1997 of ACTION: R19A 50KA LEFT TAPE OUT LEFT MASTER 2 OUT LEFT MASTER 1 OUT J MASTER C45 22/25 R273 1K R127 100K R278 9.09K R58 20K C46 22/25 R235 301 R236 301 J9A J9B I +15V -15V R59 20K C47 22/25 R237 301 J7B R60 20K R61 20K C48 22/25 R62 20K

27、 R63 20K C49 22/25 R238 301 J10A R65 20K C50 22/25 R18A 50KA R67 20K C51 22/25 R239 301 J10B R69 20K C52 22/25 S7A18 17 16 15 14 13 12 11 109 8 7 6 5 4 3 2 1 Z22 BA682A R26 47.5K D1 R D2 R D3 Y D4 Y D12 G D11 G D10 G D9 G D8 G D7 G D6 G D5 Y R176 10K +C178 3.3/16 R280 500 C53 22/25 +15V Q1 2N2222A R

28、281 4.42K R282 23.7K +15V +15V +15V R253 10K 3 2 1 411 Z23A TL074 R254 100K R255 100K R256 100K Q2 2SC2878 R257 10K C180 .01 B O R258 100K Q3 2SC2878 R259 10K D Q R261 100K R262 100K Q4 2SC2878 R263 10K C181 .01 F R264 100K Q5 2SC2878 R265 10K H C54 22/25 C55 22/25 C56 22/25 C57 22/25 R266 100K R267

29、 100K LEFT PRE-PROG SH3 LEFT PROG SH 3 T R178 10K R285 200K LEFT ZONE 1 OUT LEFT ZONE 2 OUT ON FRONT PCB ON FRONT PCB ON REAR PCB LEFT A-BUS SH 1 & 3 METER CUE SELECT SH 6 LEFT B-BUS SH 1 & 3 RIGHT A-BUS SH 2 & 3 RIGHT B-BUS SH 2 & 3 METER CUE SELECT RIGHT METER SH 5 ZONE 1 LEVEL METER ASSIGN LEFT M

30、ASTER MONO CUE LEFT METER CAL -20dB -15dB -10dB -7dB -5dB -3dB -1dB 0dB +1dB +3dB +5dB +8dB ZONE 2 LEVEL C182 .01 C183 .01 TAPE OUT MIC & AUX ZONE 1 OUT MIC & AUX S8A S9A FADER CW R17A 20KA YES NO YES NO R373 100K R376 100K R377 100K J22-8 J18-4 J LEFT PROG SH 6 ON HEADPHONE PCB ON FRONT PCB J22-22

31、J22-16 R64 1K R66 9.09K R68 1K R70 9.09K J22-11 J22-9 J22-13 UP CW CW +15V -15V SEE NOTES ON 521-259 SH 1 TANT R177 33.2K C170 68pF C172 68pF C171 68pF C173 68pF R402 100K R179 33.2K 5 6 7 Z17B TL072 3 2 1 84 Z18A TL072 5 6 7 Z19B TL072 5 6 7 Z27B TL072 ADDED C267 C267 .1 CHECKED:DRAWN: SHEET:10802

32、47th Avenue West Mukilteo WA 98275-5098 S.HeadrickR.Harrison 57 MP 22 RIGHT OUTS & PWR SUP 521-358B H:MP22521-358.SCH12-Feb-1997 of ACTION: Q7A LM337 -15V M C58 22/25 R274 1K R128 100K +15V -15V R279 9.09K C59 22/25 R71 20K C60 22/25 R240 301 R241 301 J9C J9D L C61 22/25 R72 20K C62 22/25 R242 301 J

33、7D R73 20K R74 20K C63 22/25 R75 20K +15V -15V C64 22/25 R76 20K C65 22/25 R243 301 J10C R78 20K C66 22/25 R18B 50KA +15V -15V C67 22/25 R80 20K C68 22/25 R244 301 J10D R82 20K C69 22/25 R19B 50KA R129 100K C70 22/25 R275 1K R130 100K C71 22/25 +15V U 18 17 16 15 14 13 12 11 109 8 7 6 5 4 3 2 1 Z29

34、BA682A R180 10K R287 500 R27 47.5K D13 R D14 R D15 Y D16 Y D24 G D23 G D22 G +15V D21 G D20 G D19 G D18 G D17 Y R181 10K +C179 3.3/16 TANT +15V +15V R286 200K +15V R268 10K RIGHT PRE-PROG SH 3 RIGHT PROG SH 3T LEFT METER SH 4 S7B C73 22/25 1 2 3 4 5 6 CT CT AC AC J11 D43 1N4004 D44 1N4004 + C187 220

35、0/25 D31 1N4004 + C189 2200/35 Q6A LM317 R288 243 R289 2.67K +C191 10/16 C184 .01/50 + C193 10/16 D25 Y W1 DC D32 1N4004 + C188 2200/25 D33 1N4004 D34 1N4004 + C190 2200/35 R290 2.67K +C192 10/16 C185 .01/50 +C194 10/16 R292 5.11K -15V +15V RIGHT TAPE OUT RIGHT ZONE 1 OUT RIGHT ZONE 2 OUT RIGHT MAST

36、ER 1 OUT RIGHT MASTER 2 OUT ON FRONT PCB ON REAR PCB ZONE 1 LEVEL ZONE 2 LEVEL S8B TAPE OUT MIC & AUX S9B ZONE 1 OUT MIC & AUX METER ASSIGN RIGHT MASTER MONO PROG -20dB -15dB -10dB -8dB -5dB -3dB -1dB 0dB +8dB +5dB +3dB +1dB RIGHT METER CAL POWER CW R291 243 J22-20 MASTER FADER R17B 20KA J22-14 J18-

37、3 ON FRONT PCB M RIGHT PROG SH 6 YES NO YES NO ON FRONT PCB R378 100K R379 100K R380 100K SH 3 J20-3 J20-2 J20-1 J20-4,5 ON HEADPHONE PCB R77 1K R79 9.09K R81 1K R83 9.09K DECOUPLING CAPS C258, C259 .1/50 CD +15V -15V C260 .1/50 CD +15V -15V ON REAR PCB ON HEADPHONE PCB J22-24 J22-18 J22-19 J22-17 J

38、22-15 ON HEADPHONE PCB UP C255-C257 C269-C272 C248-C254 .1/50 CD +15V -15V ON FRONT PCB C242-C246 C261,C263,C264 CW CW SEE NOTES ON 521-259 SH 1 C174 68pF R403 100K C175 68pF C176 68pF C177 68pF C238,C239 R182 33.2K R183 33.2K 3 2 1 84 Z17A TL072 3 2 1 84 Z15A TL072 5 6 7 Z18B TL072 3 2 1 84 Z19A TL

39、072 3 2 1 84 Z27A TL072 J20-6 REMOVED C240 CHECKED:DRAWN: SHEET:10802 47th Avenue West Mukilteo WA 98275-5098 S.HeadrickR.Harrison 67 MP 22 HEADPHONE CIRCUITS 521-359A H:MP22521-359.SCH12-Feb-1997 of ACTION: RIGHT PROG SH 5 +15V R357 5.11K D26 Y +15V R337 10K C219 .01 Q11 2SC2878 R338 10K A R340 10K

40、 C203 22/25 R358 5.11K D27 Y +15V R341 10K C220 .01 Q12 2SC2878 R342 10K C R343 10K R344 10K C221 .01 Q13 2SC2878 R345 10K E R347 10K R348 10K C222 .01 Q14 2SC2878 R349 10K G R350 10K R351 1K R352 1K C204 22/25 R325 30.1K R326 30.1K R327 30.1K R328 30.1K C205 22/25 12 13 14 Z31D TL074 R353 1K R354 1

41、K C206 22/25 J M C207 22/25 10 9 8 Z31C TL074 R360 51.1K C208 22/25 R315 100K R331 15K C209 22/25 5 6 7 Z31B TL074 R361 51.1K C210 22/25 R316 100K C211 22/25 3 2 1 411 Z31A TL074 R362 51.1K C212 22/25 R317 100K O Q C213 22/25 C214 22/25 LEFT A-CUE SH 1 LEFT B-CUE SH 1 RIGHT A-CUE SH 2 RIGHT B-CUE SH

42、 2 LEFT PROG SH 4 METER CUE SELECT SH 4 METER CUE SELECT SH 4 ON FRONT PCB ON HEADPHONE PCB CUE-A MONO PRGM-R MONO CUE-LSTEREO PRGM(L&R)-CUE(L&R) J37-22 J37-24 10 9 8 Z23C TL074 5 6 7 Z23B TL074 CW R314 100K R381 100K R382 100K CUE PROG C33 22/25 C41 22/25 C227 22/25 R122 100K +15V -15V S12A S12B S1

43、2C 4P2T S12D 5 6 7 Z33B TL072 C215 22/25 R319 100K J12 R355 5.11K D41 4148 D42 4148 D45 4148 Q9 2N2222A Q15 2N2907A R323 10K -15V R366 82 1/2W 5% R367 82 1/2W 5% R320 100K C223 22PF C216 22/25 +15V 8 3 2 1 4 Z33A TL072 R321 100K R356 5.11K D38 4148 D39 4148 D40 4148 Q10 2N2222A Q16 2N2907A R324 10K

44、-15V R368 82 1/2W 5% R369 82 1/2W 5% R322 100K C224 22PF C217 22/25 +15V C218 22/25 HEAD PHONE LEVEL -15V -15V +15V CW -15V S10B S10A +15V -15V +15V CUE-B S11B S11A +15V (SWITCHES SHOWN IN THE OUT POSITION) L PROG/CUE CUE MONO R PROG/CUE PROG MONO HEADPHONE PAN CW PAN CW SEE NOTES ON 521-259 SH 1 R2

45、0A 10KB R20B 20KB R21A 10KA R21A 10KA R339 20K R346 20K R359 100K R335 15K R336 15K R333 15K R334 15K R330 15K R332 15K R329 15K R405 511 J37-13,15,17,19,21,23 CHG MANY VALUES FOR COMMONALITY CHECKED:DRAWN: SHEET:10802 47th Avenue West Mukilteo WA 98275-5098 S.HeadrickR.Harrison 77 MP 22 MIC CIRCUIT

46、S 521-360A H:MP22521-360.SCH12-Feb-1997 of ACTION: 1 2 3 J13 R293 511 R294 511 R295 511 3 2 1 84 Z34A 4570 5 6 7 Z34B 4570 R296 511 -15V +15V C197 82pF R297 402 R298 402 C76 22/25 R153 100 R24A 50KA R184 10K D35 4148 D36 4148 C77 22/25 R185 10K R186 10K R86 20K +15V -15V -15V D29 -15V + C199 1/35 S1

47、3A C78 22/25 R28 47.5K 5 6 7 Z36B 4570 R29 47.5K C79 22/25 S14A C80 22/25 R25B 50KA R154 100 C198 82pF 3 2 1 84 Z36A 4570 R187 10K R301 1.5K C81 22/25 5 6 7 Z35B 4570 R133 100K J14 R303 56.2K R306 1.13KR22A 20KB R307 1.13K R23A 20KB C124 .01 C201 150PF R134 100K D37 4148 R188 10K C82 22/25 R135 100K

48、 J15 J16 R155 100 C83 22/25 R136 100K K S14B -15V +15V R312 1.0K R313 1.0K MIC SH 3 MIC LOO P IN MIC LOOP OUT ON REAR PCB ON REAR PCB MAIN MIC ENGAGE MAIN MIC REMOTE MIC/ LINE ENGAGE MAIN MIC LEVEL REMOTE /MIC LEVEL TREBLE BASS R MIC OL ON FRONT PCB CW CW J35-2 J35-3 ON MIC PCB CW J18-2 J37-10 ON HE

49、ADPHONE PCB J37-12 J32-4 ON HEADPHONE PCB J35-1 R302 15K 3 2 1 84 Z38A TL072 5 6 7 Z38B TL072 -15V +15V C74 22/25 R283 511 CW SEE NOTES ON 521-259 SH 1 C75 .01 REMOTE MIC R299 100K R131 100K R300 100K R132 100K C200 82pF C72 22/25 C106 0.1 C107 0.1 R304 5.11K R305 5.11K R309 100K R311 7.5K R277 100K R85 200K R88 5.11K R139 100K R140 100K D30 R C266 1.0 Q18 2N2222A Q20 2N2222A +15V +15V+15V S13B -15V +15V R308 100K R310 7.5K R276 100K R84 200K R87 5.11K R137 100K R138 100K D28 R C265 1.0 Q17 2N2222A Q19 2N2222