6.2v Rx8.5v 8.8v 13.8v

Transcript

8 7 6.2V L1 27uH 4 3 Q251 2SC945 R207 4K7 2 1 CB13.8V 8.8V IC1 C231 10n S5-D1 DIMMER 5 R2 10K RX8.5V CB13.8V(EXT) CB13.8V(EXT) 6 C6 47n 1 2 3 4 5 6 7 8 9 10 CHANNEL SWITCH COM+ P1 P2 P3 P4 P5 P6 TEST CH19 CH9 MC LED301 T/R 20 FIN 19 VCC 18 AO 17 AI 16 PD 15 LD 14 GND 13 RO 12 RI 11 D 13.8V C135 10n TX8.6V C5 10n R1 C4 1u 10.240 MHz C1 56p C26 82p D17 MA150 C124 18p CT2 20p Q25 2SC2724 Q2 2SC945 C20 22p Q21 2SC710 C36 10p Q3 2SC2724 C139 IS ON BACK OF BOARD SEE NOTE 1 D3 ITT410 D13 ITT410 Q5 2SC1846 R17 6K8 C37 68p Q4 2SC2724 C31 120p R10 2K7 C25 120p C22 10n R16 390R C25 10n L3 L6 T3 10CA 006 C139 39p C24 330p C19 18p C7 47n Q20 2SC710 R91 1K Q1 2SC2724 C23 33p T2 10CB 003 C21 15p R4 10K C123 47p CT1 20p C121 5p R15 150K R18 4K7 C33 10n R19 68R L9 GREEN C47 120p R20 330R C42 10n C41 390p C38 10n C49 390p Q6 2SC1909 R119 270R RV5 300R L10 C125 2n2 R93 2K2 L11 PART OF FRONT PANEL CONTROLS C46 100p C45 180p R23 47K C48 220p C50 270p R80 39K 0 G C502 10n RV501 10K SWR PRESET C52 4n7 MIDLAND 76-900-UK GND 4 RV4 10K RF METER D12 1N60 R24 1K R201 1K - VCO TEST POINT C53 1u G M3 S8-A CAL / SWR SWITCH 1st Mixer 16.905 to 17.295 MHz RV201 10K CAL PRESET 10.24MhZ RV5 LOW POWER WHITE RX SIGNAL L8 RF POWER METER L9 L4 YELLOW GREEN Q6 8.8V T5 27 MHZ Q8 RV4 RF METER 27 MHZ Q9 IC5 NJM4558D Q3 Q2 T8 10.7 IF RV6 ALC 1 Q1 Q19 RV1 SQUELCH T9 10.7 IF D13 IC4 TA7205 Q18 *1 Q25 Q10 T10 Q21 TX TX TX TX TX EM BASE COL 4.4 0 1.6 1.2 0 0 1.1 1.2 1.2 0 1.1 0.5 0.6 0 0 12.5 8.8 0 0 4.8 0 2.0 1.6 0.3 0.1 1.7 1.7 1.7 0.7 1.6 1.1 1.2 0 0 9.1 8.0 0.7 0.7 8.8 8.2 8.6 13.0 12.2 12.2 6.2 12.0 12.0 6.0 11.4 12.5 3.3 3.2 0 8.6 8.6 0 0.1 0 0 0.7 0.7 0 5.5 FUNCTION RX8.5V VCO TX SW TX FREQ DOUBLER TX RF PRE-AMP TX RF DRIVER TX RF OUTPUT RF AMP 1ST MIXER 1ST MIXER 2ND MIXER 455KhZ IF AMP 455KhZ IF AMP AUDIO AMP SQUELCH CONTROL ALC CONTROL 8.6V REGULATOR TX 8.6V SWITCH ALC INHIBIT MODULATION MUTE LOW D TUNE SW HIGH D TUNE SW MIC AUDIO MUTE VCO BUFFER C54 27p C62 22p T7 10CM 003M R26 47K T5 ETR 0333 R36 1K R31 470R GND FB2 FB1 R25 680R R29 2K7 C58 10n R27 680R C55 10n C63 150p C69 10n 2 R39 470R SWR METER 9 R50 330R D11 1N60 R49 47K 10 C87 22n 1 R44 330R C73 47n C71 47n 14 IC3 AN240 C80 15p D6 1N60 R41 3K3 R38 4K7 R35 120R C C84 47n C72 10n C70 22n R33 390R M2 8 Q11 2SC2724 R37 1K C66 10n R30 680R C65 47n C82 47u Q12 2SC828 CF2 455 KHz 10MA 018M G T12 07LA 023N R45 47R R42 15K R40 680R T11 07LA 023N Q10 2SC2724 CF1 10.7 MHz Q9 2SC2724 C56 47p R43 33K C68 5p T9 MA06 T8 Q8 2SC2724 T10 07LA 004N R34 3K3 C67 2p Q7 2SC2724 D5 MA150 D4 MA150 Q15 Q22 C77 10n R28 100R 5 TX T2 TX Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 Q19 Q20 Q21 Q22 Q25 12 C74 47n R47 820R C76 10n R112 4K7 C75 10n C81 47n C86 1n 7 RV2 DEVIATION Q7 3 4 6 T7 T1 VCO VR7 10K SWR CAL 12.5V Q4 T3 D3 S8-B CAL / SWR SWITCH Q5 T4 TX Q16 C D D501 1N60 R501 100R R38 100R L5 PCB = PTBM134AOX 13.8V(EXT) + S3 DELTA TUNE SO259 ANT 2 C51 2p C126 2n2 TP1 D8 1 R11 16 Q17 5 C201 150p L4 YELLOW C39 120p PART OF REAR PANEL PTSRO17AOX L8 WHITE C44 120p 22K R92 4K7 C136 47n GND R21 220R C40 47n R9 220K R12 47K R8 150K X1 LC7137A T1 10DB 003 R7 820R C206 47n L7 C43 10n T4 10CP 005M R6 4K7 R13 3K3 R3 5K6 560R C3 22p C35 10n C205 100n C204 47n GND C138 47n C8 39p C85 1n R48 100K C83 22n Q14 Q20 C59 47n Q13 455 IF D2 RV3 S METER 20 C134 3u3 14 Q23 RX ALIGNMENT TEST POINT R46 22K 39 1 Q12 IC3 AN240 R202 39K T12 FM DISC M1 RV3 20K S METER SIGNAL FOR SQUELCH CONTROL VR6 100K RF GAIN G TP2 38 G T11 455 IF IC1 LC7136 OR LC7137 6B PART OF FRONT PANEL CONTROLS 1 RX AUDIO Q11 SIGNAL METER MODULATION *1 Q18 INCORRECTLY MARKED AS Q11 ON BOARD PART OF FRONT PANEL CONTROLS C140 IS ON BACK OF PCB CB13.8V R122 5K6 RX AUDIO 13.8V RX8.5V 8.8V C101 68n C99 220p C102 47u PART OF FRONT PANEL CONTROLS R52 2K7 S6 HI FILTER 6 R51 5K6 C89 47n R65 10K C90 4n7 C111 10n C93 1n 10 8 R73 27K R72 10K C118 33n C104 68n RV2 2K DEV R75 10K R74 10K C115 33n C113 47n C103 220p C100 33u R57 560R C105 220u 9 3 S1-B ON/OFF POWER 35 PA CB ALL CB/PA SWITCH ARE LINK AS ONE - 5 + R78 10K 7 R82 18K 2 - 3 + R79 10K IC5B NJM4558D 15 CAUTION AC MAINS 230 V C120 22n R83 4K7 THERE ARE 2 LOCATIONS FOR R81 THE NORMALLY UNUSED ONE IS NEAR THE 10.7M CERAMIC FILTER. 13.8 VDC INPUT FROM PTPW005COX PSU Q15 2SA564 2. C108 3u3 Q18 2SC945 MORE OUTPUT POWER: CHANGE Q5 TO 2SC2314. C112 10n C106 33u C107 3u3 R85 10K R60 10K R70 1K D16 MA150 R5 56R 6.2V RV1 20K SQUELCH PRESET Q14 2SC945 C98 3u3 C217 4n7 R61 1K8 C109 10u C205 10n C218 4n7 J3 P.A. PART OF FRONT PANEL CONTROLS 23 S7-C PA CB/PA CB R100 10K L12 C122 220u D201 1S1855 13.8 VDC R62 22K D7 1N60 R68 1K R67 15K TX8.6V D9 MA150 R89 3K3 1 1. ON SOME BOARDS, C139 IS SOLDERED ACROSS R18 (I.E. BASE OF Q4) THIS CAUSES LOW POWER AND T3 NOT TO TUNE - MOVE IT TO T3. RX8.5V Q17 2SA719 G + G R63 18K R69 2K7 R84 15K B 8.8V Q16 2SC1318 C127 10n 3 R88 390R RV6 500R ALC RX8.5V NOTES: 12.5V C79 10u C60 47n 14 CB13.8V R86 10R 1/2 W L14 R81 2K2 N/U 12 CH1 CHOKE L Q19 2SC945 N/U 11 9 R87 270R R66 10K 13.8V R64 47R C110 1000u GND TO AC MAINS SIDE OF TRANSFORMER PTPW005COX PSU 1 IC5A NJM4558D C119 1n8 R77 470K C116 4n7 C114 6n8 6 PA13.8V 20 13.8V(EXT) CB13.8V(EXT) 2 R59 82R Q13 2SC1843 C95 * C88 4u7 VR1 50K VOLUME 1 ON D14 MA150 R76 470K 5 IC4 TA7205P C97 2n2 7 C96 10n R58 2k2 R56 820K C91 10n R53 4K7 Q22 2SC945 C212 10n VR5 100K TONE 4 C94 100u 21 19 C213 5n6 R55 4K7 OFF ON S1-A ON/OFF POWER 4 C92 560p OFF GND 8 R54 2K2 B SW7-A CB/PA R14 6K8 C140 33u R90 10K D8 9.1V Q24 2SC945 C11 47u D2 6.2V C9 47n C10 10n TX8.6V 2 C206 10n 13 41 G TO PIN 14 PART OF REAR PANEL TO S1-A MAINS ON/OFF SWITCH D19 1N60 PA13.8V L202 47u MA150 C207 4n7 R95 270R F1 2 AMP C216 4u7 D1 TO D4 1N5403 T201 TRANSFORMER PTPW005COX PSU C137 33u 1 A Q201 2SD313 C3 22n R1 220R 1/2 W F2 3 AMP R2 47R 1/2 W Q1 2SC900 2 C1 2200u R3 100R 1/2 W ZD1 16v2 1.2 W C12 22n G VR2 10K SQUELCH RV1 500R R6 1K 13.8 VDC OUTPUT TO PINS 3 AND G G 8 7 GND = TRANSMIT J4 EXT SP 4 44 R98 330R 1/2 W VR4 5K PA GAIN VR3 5K MIC GAIN J3 MIC 4 1 E&I S4-B SPEAKER C210 4n7 3 2 C209 4n7 S5-D4 DIMMER C211 10n C208 4n7 R97 4R7 3 52 TX RX NORMAL -10dB PL1 METER PL2 METER PL3 METER PA MOD ALL DIMMER SWITCH ARE LINK AS ONE SP E SPEAKER SWITCH PART OF FRONT PANEL CONTROLS 7 PA13.8V CB13.8V(EXT) I E&I S4-A C4 10n ZD2 RD 5v6 I E C215 4n7 J6 PHONE PART OF FRONT PANEL C2 100u R96 100R G R5 1K2 1/2 W Q2 2SC900 AC 230 VOLTS MAINS INPUT C214 4n7 3 R4 820R 1/2 W C6 22n C208 4n7 E = EXTERNAL SPEAKER I = INTERNAL SPEAKER E&I = EXTERNAL & INTERNAL Q23 2SC945 S5-D2 DIMMER S2-A ATTN S5-D3 DIMMER S2-B A R206 27R PA CB S7-B CB/PA ALL CB/PA SWITCH ARE LINK AS ONE R205 47R R204 27R PART OF FRONT PANEL CONTROLS 33 24 32 41 1W MIC AUDIO BY: Rick Jackson Euro Radio Co 6 5 4 3 2 Size Document Number MIDLAND 76-900-UK.SCH Date: Wednesday, April 04, 2007 1 Rev 1.0 Sheet 1 of 1