Symetrix 421M_1C00_sch 电路图.pdf

上传人：cc518

文档编号：219161

上传时间：2025-03-13

格式：PDF

页数：7

大小：372.08KB

《Symetrix 421M_1C00_sch 电路图.pdf》由会员分享，可在线阅读，更多相关《Symetrix 421M_1C00_sch 电路图.pdf（7页珍藏版）》请在收音机爱好者资料库上搜索。

1、SHEET:OF RELEASED: DRAWN: DATE:LTRREVISIONS DONE OR ECO NUMBER: REVISION RECORD SYMETRIX INC. 14926 35th Avenue West Lynnwood, WA 98037-2303 USA REV: DRAWING NO: TITLE: COMPANY: DATED: DATED: A B C DD C B A 654321 125 Hz 6 KHz (SHOWN OUT) (SHOWN OUT) 421M - AGC LEVELER R B3/21/95 52 421M 11 SH5 SH7

2、SH7 SH6 7 MIC GAIN (BACK PANEL) PHANTOM (SHOWN OUT) MIC LINE INPUT + - + - SH6 GND SH4,6 LINE GAIN (BACK PANEL) 133 mV/dB (0 to -10dB) THD C SH7 3.0REMOVE DE-THUMP, FINALIZE COMP VALUES09/21/95 NOTE: 1. ALL DIODES 1N4148 UNLESS NOTED 2. ALL RESISTORS IN OHMS 3. ALL CAPS IN uF UNLESS NOTED A.0 FINALI

3、ZE COMPONENT VALUES AGAIN, FIX EXPANDER THRESHOLD, RELEASE TO PRODUCTION. 11/08/95 B.0CHANGE C9-12 TO METALIZED POLY04/05/96 B01Chg fuse text to reflect changed values.07/05/96 CAdd R187,R210,C80,C81 (sheet 6) per ECN13804/14/99 SH6 1 2 3 J1 XLR-FEM J2 1/4 TRS JACK R1 1K00 R2 1K00 R3 9K09 R4 9K09 C1

4、 470pF C2 470pF 2 - 3 + 1 U1A RC4560 R5 4K99 R6 4K99 C3 220pF C4 220pF C5 100p C6 100p C7 .056 C8 .056 6 - 5 + 7 U5B RC4560 2 - 3 + 1 U2A RC4560 6 - 5 + 7 U2B RC4560 R7 15K0 R8 30K1 2 3 1 SW8A 2 3 1 SW2A R9 6K49 R10 6K49 R11 100K C9 .0022 C10 .0022 C11 .0047 C12 .0047 R12 6K49 R13 6K49 C13 4.7NP IN

5、OUT VCCEC1 M Y S E E V 2 C E D N G 2150A 18 37 6254 U4 R14 13K0 CW 31 2 R15 50K R16 1M R17 61.9 R18 61.9 R19 4K99 R20 61.9 XLR-MALE 1 2 3 4 J4 J5 1/4 TRS JACK R21 10K0 C14 100p 5 + 6 - 7 U3B NE5532 3 + 2 - 1 U3A NE5532 R22 10K0 R23 10K0 C15 22pF R24 100 R25 100 C16 47NP C17 47NP R26 100K R27 100K 2

6、- 3 + 1 U5A RC4560 R28 10K0 R29 10K0 R30 10K0 R31 10K0 C18 100p C19 100p R35 1K21 160035 1 3 2 8 6 4 7 5 RL1 R227 100 R228 100 L1 BEAD L2 BEAD C68 470pF, 2.5% C69 470pF, 2.5% Q12 2N4403Q13 2N4403 Q16 TIP30A C70 470pF R229 1K00 R230 1K00 D68 D69 2 - 3 + 1 U13A RC4560 6 - 5 + 7 U13B RC4560 C71 470pF,

7、2.5% C72 470pF, 2.5% R231 2K00 R232 2K00 CW R233 2K5-C R234 20 R235 10K0R236 100K R237 10K0 R238 100K 6 - 5 + 7 U1B RC4560 R240 78K7 R241 59K0 R242 78K7 R243 10K0 R245 249 D70 2 3 1SW7A R246 4K99 R247 4K99 R248 1K00 + C74 47/63 Z3 1N4742 12V J3-1 J3-2 J3-3 J3-4 J3-5 J3-6 J3-7 CW R177A 10KA R178 4K22

8、 C84 4.7NP C85 .001 R244 200 C73 330pF C78 330pF C53 220pF C79 220pF +15V -15V +15V -15V OUT_LVL VCA_CV RLY- RLY+ INPUT_LVL -15V2 +55V LOGIN RadioFans.CN 收音机爱好者资料库 SHEET:OF REV: SYMETRIX INC. 14926 35th Avenue West Lynnwood, WA 98037-2303 USA COMPANY: TITLE: DRAWING NO: DATED: DATED: DRAWN: RELEASE

9、D: A B C DD C B A 654321 RELEASE EXPAND EXPANDER THRESHOLD (FRONT PANEL) EXPANDER (FRONT PANEL) BYPASS AUTO 2 421M - EXPANDER SH4 SH4 SH3 SH7 7 ON IN AUTO OFF IN AUTO HIGH WHEN EXP IN BYPASS OPEN WHEN IN AUTO LOW WHEN IN AUTO C 52 421M 1 R B3/21/95 (CAUSES GAIN TO DECREASE IF STEADY STATE SIGNAL PRE

10、SENT, SUCH AS FEEDBACK) 6 - 5 + 7 U6B LM324 Q1 2N5458 R36 1M D1 R37 200K R39 2K67 C21 .47uF 9 - 10 + 8 U7C LM324 R40 20K0 R41 1M D2 R42 1K00 Q2 2N4401 D3 D4 D5 CW 3 1 2 R43 500KAR44 20K0 13 - 12 + 14 U7D LM324 + C23 2.2 R45 2K00 C24 4.7NP R46 1M R47 150K0 R48 10K0 R49 100 2 - 3 + 1 U7A LM324 R50 13K

11、0 R51 9K09 6 - 5 + 7 U7B LM324 R55 4K99 D6 GREEN R38 4K99 R56 768K R57 10K0 R59 13K0 R60 383K0 13 - 12 + 14 U6D LM324 R61 4K99 R62 10M R63 2M2 D7 R64 13K0 Q3 2N5458 R65 1M R66 4K99 R67 383K0 R68 383K0 D8 2 - 3 + 1 U6A LM324 R69 4K99 R70 10K0 9 - 10 + 8 U6C LM324 CW 3 1 2 R58 50KB R71 10K0 R72 3M3 R7

12、3 10M D10 R74 10K0 R75 10K0 D17 R52 10K0 Q17 2N4401 R54 20K0 D9 R103 10K0 R249 10K0 D93 R278 4K99 D53 R112 10K0 R113 1K21 LOG_OUT -15V +15V EXP_CV IN15 -15V +15V ARM -15V -15V +15V RadioFans.CN 收音机爱好者资料库 SHEET:OF REV: DRAWING NO: TITLE: COMPANY: DATED:DRAWN: RELEASED:DATED: SYMETRIX INC. 14926 35th

13、 Avenue West Lynnwood, WA 98037-2303 USA A B C DD C B A 654321 421M - LIMITER 3 OUTPUT LIMITER THRESHOLD THRESHOLD TRIM LIMIT SH4 SH4 SH2 SH6 SH7 SH4 7 TARGET OUTPUT LEVEL (FRONT PANEL) U9-8 should go high for about .5 seconds when the ratio pot is turned CCW. AGC OR LIMITER CONTROL VOLTAGE +15V WHE

14、N UNIT IS ENABLED C 52 421M 1 R B3/21/95 CAUSES C20 TO DISCHARGE RAPIDLY. POSITION OF RATIO POT CW 31 2 R76 50KB CW 3 1 2 R77 50K R78 249K0 R79 200K R80 158K0 R81 30K1 D11 R82 2K37 6 - 5 + 7 U25B RC4560 R83 100 D12 + C20 2.2 R85 200K C22 22pF D13 R86 15K0 R87 10K0 R88 10K0 R89 4K99 D14 RED 13 - 12 +

15、 14 U8D LM324 2 - 3 + 1 U9A LM324 6 - 5 + 7 U9B LM324 R90 30K1 R91 40K2 R92 49K9 R93 49K9 R94 49K9 9 - 10 + 8 U9C LM324 D15 R97 59K0 13 - 12 + 14 U9D LM324 R98 20K0 R99 15K8 R100 49K9 R101 35K7 R102 30K1 4 - 5 + 2 U20B LM339 9 - 10 + 8 U8C LM324 D63 CW 31 2 R32 50KB R33 200K R34 158K0 2 - 3 + 1 U25A

16、 RC4560 R84 10M D92 C83 4.7NP Q19 2N5458 R95 10K0 R96 1M R259 10K0 R260 100K C76 .47uF D71 -15V +15V -15V +15V LOG_OUT IN15 RATIO_BUF1CV EXP_CV RATIO_BUF2 -15V +15V +15V -15V +15V RadioFans.CN 收音机爱好者资料库 SHEET:OF REV: DRAWING NO: TITLE: COMPANY: DATED:DRAWN: RELEASED:DATED: SYMETRIX INC. 14926 35th

17、Ave. West Lynnwood, Wa, 98037 A B C DD C B A 654321 RATIO (FRNT PAN) 4 421M AGC/ARM RESPONSE (FAST) (SLOW) TEST NORMAL THRESH AUTO RELEASE LEVEL (FRONT PANEL) ACTIVE SH2 SH1 SH6 SH2 SH7 SH3 SH3 7 SYM LOW DURING STEADY STATE SIGNAL INPUT LOW WHEN RATIO CCW ACTIVE WHEN NOT DISABLED R B3/21/95 52 421M

18、1 C U11 INPUT HAS LOW CUT TO AVOID ROOM RUMBLE FROM FOOLING THE ARM CIRCUIT RESISTORS AROUND U15A CAUSE A CONTROLLED LEAKAGE INTO C42 WHEN IN HOLD MODE. CAUSES GAIN TO SLOWLY DECREASE DURING LONG HOLD 1 IN 7 OUT 4 SYM 5 VEE 2 BIAS 3 GND 6 CAP 8 VCC U10 THAT2252 CW 3 1 2 R104 50K R105 20K0 R106 49K9

19、R107 20 R108 536K C26 4.7NP C27 .01uF + C28 10 R109 1M R110 1K00 R111 10K0 1 IN 7 OUT 4 SYM 5 VEE 2 BIAS 3 GND 6 CAP 8 VCC U11 THAT2252 R114 49K9 R115 20 R116 536K C29 4.7NP C30 .01uF + C31 10 R117 1M R118 1K00 R119 10K0 C32 4.7NP C33 .1uF R120 10K0 2 - 3 + 1 U14A LM324 R121 20K0 R122 2K00 R123 100K

20、 D16 C35 4.7NP Q4 2N4401 R124 10K0 D18 R125 499 R126 49K9 CW 31 2 R127 50KB R128 20K0 6 - 5 + 7 U16B LM324 R129 49K9 9 - 10 + 8 U12C LM324 D19 D20 C36 47NP R130 200K R131 357K0 13 - 12 + 14 U12D LM324 R132 1K00 R133 150K0 D21 C37 47NP R134 100K D22 D23 2 - 3 + 1 U8A LM324 R135 10K0 C38 .47uF R136 1M

21、 R137 4K99 D24 GREEN CW3 1 2 R141 50K 6 - 5 + 7 U14B LM324 R142 20K0 D25 R143 30K1 R144 1K00 9 - 10 + 8 U14C LM324 D26 R145 1M C39 22pF R146 1K00 Q6 2N4401 D27 R147 20K0 R148 40K2 2 3 1 SW3A + C40 10 R149 2K00 + C41 22 R150 10M 13 - 12 + 14 U14D LM324 Q7 2N5458 R151 1M C42 .47uF 1 2 3 J8 R152 10K0 3

22、 + 2 - 1 U15A LF353N CW 31 2 R153A 50KB CW 64 5 R153B 50KB 9 - 10 + 8 U16C LM324 R154 30K1 13 - 12 + 14 U16D LM324 R156 14K3 R157 40K2 R158 71K5 Q8 2N5458 R159 1M R160 1K00 6 - 5 + 7 U8B LM324 R161 10K0 R162 200K R163 15K0 D28 R164 10K0 R165 13K0 R166 357K0 R167 536K 5 4 6 SW3B R168 226K D56 R138 59

23、K0 R139 121 R208 4K99 R209 10K0 2 - 3 + 1 U16A LM324 5 + 6 - 7 U15B LF353N 2 - 3 + 1 U12A LM324 6 - 5 + 7 U12B LM324 D91 R155 649 R214 1M R215 10M -15V-15V +15V +15V -15V -15V +15V +15V LOGIN EXT_LOGIN +15V +15V -15V +15V -15V IN15 +15V -15V -15V RATIO_BUF2 RATIO_BUF1 -15V -15V -15V LOG_OUT ARM -15V

24、 SHEET:OF REV: SYMETRIX INC. 14926 35th Avenue West Lynnwood, WA 98037-2303 USA DRAWING NO: TITLE: COMPANY: DRAWN: RELEASED: DATED: DATED: A B C DD C B A 654321 LO LEVEL CAL 421M - OUTPUT METERING 5 -54VU- 4 8- 4 2- 3 6- 3 0- 2 4-18-12- 60VU612CLIP (+14VU) SH1 7 C 52 421M 1 R B3/21/95 Q9 2N4403 R169

25、 121 D29 D30 R170 10K0 D31 GREEN D32 GREEN D33 GREEN D34 GREEN D35 GREEN D36 GREEN D37 GREEN D38 GREEN D39 GREEN D40 GREEN D41 GREEN D42 GREEN D43 RED 10 - 11 + 13 U17C LM339 8 - 9 + 14 U17D LM339 6 - 7 + 1 U17A LM339 4 - 5 + 2 U17B LM339 10 - 11 + 13 U18C LM339 8 - 9 + 14 U18D LM339 6 - 7 + 1 U18A

26、LM339 4 - 5 + 2 U18B LM339 10 - 11 + 13 U19C LM339 8 - 9 + 14 U19D LM339 6 - 7 + 1 U19A LM339 4 - 5 + 2 U19B LM339 6 - 7 + 1 U20A LM339 R172 249 R173 499 R174 1K00 R175 2K00 R176 4K02 R171 357 R179 24K9 R180 249 R181 249 R182 499 R183 1K00 R184 2K00 R185 4K02 R186 1K50 R188 15K8 2 - 3 + 1 U21A RC456

27、0 6 - 5 + 7 U21B RC4560 R189 10K0 R190 10K0 R191 10K0 D44 D45 R192 499 C43 4.7NP R193 10K0 C44 4.7NP CW 3 1 2 R194 50K R195 30K1 R196 10 R197 1K21 R198 59K0 C45 4.7NP +15V -15V +15V +15V OUT_LVL +15V -15V DRAWN: RELEASED: DATED: DATED: DRAWING NO: TITLE: COMPANY: SYMETRIX INC. 14926 35th Avenue West

28、 Lynnwood, WA 98037-2303 USA SHEET:OF REV: A B C DD C B A 654321 SH7 421M - STEREO LINK/PWR DIST 6 STEREO LINK (SLAVE) (MASTER) STEREO LINK (SLAVE) (MASTER) STEREO LINK (SLAVE) (MASTER) SH1 SH4 SH1 SH3 SH7 SH7 SH1 7 8 RIBBON CABLE (TO DAUGHTER BOARD) SH7 C R B3/21/95 52 421M 1 SH1 160035 1 3 2 8 6 4

29、 7 5 RL2 D57 1N4003 R53 1K00 R140 1K00 R217 10K0 R218 100 D S G Q5 2N5458 R221 1M 2 1 3SW6A D58 D59 R222 10K0 3 3 5 5 2 2 4 4 11 J11 C55 4.7NP 8 9 7 SW6C 11 12 10 SW6D R223 1K00 R224 100K 8 4 U1C RC4560 8 4 U2C RC4560 8 4 U5C RC4560 8 4 U21C RC4560 4 11 U6E LM324 4 11 U7E LM324 4 11 U8E LM324 4 11 U

30、9E LM324 4 11 U12E LM324 4 11 U14E LM324 4 11 U16E LM324 8 4 U15C LF353N 8 4 U3C NE5532 C56 .1uF C57 .1uF C58 .1uF C59 .1uF 8 4 U25C RC4560 8 4 U13C RC4560 3VCC 12 U17E LM339 3VCC 12 U18E LM339 3VCC 12 U19E LM339 3VCC 12 U20E LM339 10 - 11 + 13 U20C LM339 8 - 9 + 14 U20D LM339 2 - 3 + 1 U24A LM324 6

31、 - 5 + 7 U24B LM324 9 - 10 + 8 U24C LM324 13 - 12 + 14 U24D LM324 4 11 U24E LM324 1 2 3 4 5 6 J7 C77 4.7NP 1MH10 MH156 1MH3 MH156 1MH4 MH156 1MH5 MH156 1MH6 MH156 1MH7 MH156 1MH8 MH156 1MH9 MH156 1H1 MTHOLE4 1H2 MTHOLE4 R187 100 OHM R210 100 OHM + C80 100/35 + C81 100/35 LOGIN -24V EXT_SLAVE CV VCA_

32、CV +15V -15V +15V EXT_LOGIN RLY- RLY+ INPUT_LVL +15V -15V +15V -15V -15V2 +15V2 SHEET:OF REV: RELEASED: DRAWN:DATED: DATED: DRAWING NO: TITLE: COMPANY: SYMETRIX INC. 14926 35th Avenue West Lynnwood, WA 98037-2303 USA A B C D A B C D 654321 421M - POWER 7 STEREOLINK BYPASS (SHOWN BYPASSED) (SLAVE) .1

33、25 A 230VAC .25A 115VAC (MASTER) SH2,3,4 SH6 SH1,6 SH1,6 7 CUT IF SW-4 INSTALLED LOW WHEN ENABLED +24V +70 TO +75V SH1 SH6 C 52 421M 1 R B 3/21/95 USED ON EUROPEAN VERSION ONLY. NOTE:J9, J10, SW4, SW5, T1 not on European version. EXT PWR 1 3 2 J9 MAINS (IEC) J10 FUSE 2 3 1 SW4A 230 VAC115 VAC SW5 R1

34、99 10 C46 .01uF D46 1N4003 D47 1N4003 D48 1N4003 D49 1N4003 + C47 1000 + C48 1000 INOUT GND U22 LM2940CT-15 VINVOUT GND U23 79M15 C49 4.7NP C50 4.7NP R200 0 OHM R201 0 OHM 5 4 6 SW1B 5 4 6 SW6B Q11 2N4401 R205 10K0 C51 .1uF D50 1N4003 D51 D52 C54 .1uF D55 1N4003 R216 0 OHM C60 .1uF C61 .1uF C62 .1uF

35、 C63 .1uF C64 .1uF C65 .1uF C66 .1uF C67 .1uF D60 R203 20K0 R204 2K00 D61 D62 R206 200K R207 20K0 R202 10K0 D64 1N4003 D65 1N4003 D66 1N4003 D67 1N4003 + C34 100/100 Q10 TIP29A R225 10K0 Z1 1N4742 12V Z2 1N5260 43V R226 20K0 + C52 47/63 1 6 2 5 7 11 8 10 12 T1 120028 + C25 100/100 + C75 100/100 J12HS_6021 J13HS_6021 1 2 3 4 5 6 J6-15V +15V +15V IN15 RLY+ RLY- EXT_SLAVE +55V -24V