Cobra MR HH425 LI VP Serivce Manual Download

Page: 1 / 65

Page

Specifications .................................................................................……………………….………...……2

Theory of Operation .………………...................................................………..........……………….....….4

Block Diagram .............................................................................……...…………………………………7

Disassembly Instructions ...........................................................……….........………………………...…8

Alignment Procedures ...……………...........................................…….................…...…………………9

Adjustment Procedure …….....…………...................................................................…………………10

Wiring Diagram ……......................................................................…………..…………………….……12

Printed Circuit Board ....................................................................……………....……………………...13

Troubleshooting …...................................................................................………...……………………16

Exploded View ......................................................................…………………………..………………..18

Mechanical Parts List .....................................................................…………………….…………….…21

Electrical & Packing & Other Parts List ..............................................................…………………...….23

IC Lead Identification and Internal Diagram ............………………………………………........………..46

Transistor Lead Identification …………………………………………………………….……...……….54

Voltage Chart ...............................................................................………………….……………...……56

Schematic Diagram..........................................................................………………………………...….63

Version:01 Date: Jan 03,2008

Summary of Contents for MR HH425 LI VP

Page 1: ...djustment Procedure 10 Wiring Diagram 12 Printed Circuit Board 13 Troubleshooting 16 Exploded View 18 Mechanical Parts List 21 Electrical Packing Other Parts List 23 IC Lead Identification and Internal Diagram 46 Transistor Lead Identification 54 Voltage Chart 56 Schematic Diagram 63 Version 01 Date Jan 03 2008 ...

Page 2: ... working voltage V 6 3 Battery lifetime Tx5 Rx5 Standby90 Hour 12 0 7 2V 1500mAH Memory retented EEPROM Antenna socket TNC Display LCD With Backlight Built ln speaker Diamter 40mm Impedance 8 Ohm Dimension 64mm W 135mm H 38 5mm D Weight without battery 250g RECEIVER UNIT LIMIT Sensitivity for 12dB sinan dBm 118 Squelch a squelch threshold dBm 120 b squelch tight dBm 113 107 c hysteresis tight dB 2...

Page 3: ... ppm 10 Modulation limiting kHz 4 3 4 9 Modulation sens for 3 kHz dev mV 7 3 Audio frequency response 1KHz 0dB ref 300HZ dB 12 3 2500HZ dB 6 3 Audio distortion 2 5 khz dew 5 Hum and noise ratio dB 35 Spurious emission dBm 36 Current drain TX Hi mode A 2 Mid mode A 1 5 Lo mode A 0 9 Mic modulation sen at sound level of 94 dBA kHz 1 5 Mic modulation limiting at sound level of 110 dBA kHz 4 0 4 9 Not...

Page 4: ...e modulated signal output from the VCO is pre amplified by Q11 D14 Q10 Q9 and D5 Then it is amplified by Q2 Q1 The amplified signal then passes through a match network that consists of C79 L3 and the antenna switching circuit D1 L37 D7 The signal is filtered by another low pass filter circuit which consists of C55 L10 C59 C63 L2 C58 C1 L1 and C54 These low pass filters are necessary to suppress th...

Page 5: ...ived by the antenna and passes through a low pass filter network L11 C67 C70 L12 C83 C80 L13 C84 C91 L16 C108 to filter out the unwanted signals the antenna switching circuit D4 switching circuit to receive Then passes through a match network C85 L19 of F1 F1 filters the unwanted signals The RF amplifier Q3 amplifies signals within the range of the frequency coverage and passes though a saw filter...

Page 6: ...ut There is another VOX path which consist of Q30 U7 2 4 U7 3 4 This is a 300Hz low pass filter After that the audio passes to U5 Pin2 DAC input Two VOX signals let the VOX works well in a noisy place PLL Phase Lock Loop Circuit The receiver and transmitter both share the same PLL Phase Lock Loop Circuit to produce the carrier or the receive frequency The local oscillator consists of a fundamental...

Page 7: ...BLOCK DIAGRAM BACKLIGHT BACKLIGHT 7 ...

Page 8: ... the front and rear panels from the main chassis 1 Remove the rubber antenna SPK MIC knob and the VOL SQL knob from the main unit 2 Remove 4 screws from the rear housing of main unit 3 Detach the die cast from the front housing 1 2 3 8 ...

Page 9: ...uipment listed below are used for the test setup shown in Fig 3 1 This test setup used either partially or totally during the following adjustments Test Equipment 1 DC Power Supply 7 2V DC 0 15V 3A max 2 RF Power Meter 10 W 50 Ohm 100 200 MHz 3 RF Signal Generator 100 200 MHz 50 ohm termination 4 FM Linear Detector FMLD 100 200 MHz 5 Frequency Counter 1 500 MHz 6 Oscilloscope 20 MHz 7 Distortion M...

Page 10: ...ect the antenna coupler output to a frequency counter 2 Set channel to VHF CH01 156 050 MHz 3 Adjust VC1 to obtain a frequency reading 156 050 MHz 200Hz 5 VR2 UHF Modulation 1 Connect the antenna coupler output to an FM linear detector 2 Connect Audio Oscillator to Microphone Jack 3 Set unit to transmit mode 4 Set audio oscillator output to 23dBm 1 kHz 5 Adjust VR2 to obtain 2 3 kHz deviation 6 VR...

Page 11: ...Main PCB Top View Bottom View VR3 VR2 VC1 L44 L46 SQL L45 11 ...

Page 12: ...WIRING DIAGRAM CHARGER CHARGER 12 ...

Page 13: ...Main PCB Top View PRINTED CIRCUIT BOARD SQL 13 ...

Page 14: ...Main PCB Bottom View PRINTED CIRCUIT BOARD 14 ...

Page 15: ...Charger PCB PRINTED CIRCUIT BOARD Top View Bottom View LCD PCB Bottom View Top View 15 ...

Page 16: ...dio output voltage at pin 9 Defective F1 and F2 5 Only UHF No receive RX Check TP2 0 5 4 0V Defective Q8 Q7 Defective F6 6 Only VHF No receive RX Check TP1 0 5 4 0V Defective Q15 Q3 Defective F1 F2 7 UHF VHF Low receiver sensitivity Check antenna and connector for possible corrosion or bad connection Defective F3 F4 Defective U1 Check the output level of local OSC 8 Only UHF Low receiver sensitivi...

Page 17: ...ive D14 Q10 Q9 12 Only VHF No transmit TX Check TP1 voltage 0 5 4V Defective D12 Q5 Q4 13 Poor or no modulation Defective microphone Defective U9 and or its associated components Defective VR2 VR3 14 Deviation of transmit frequency Check crystal X2 and VC1 17 ...

Page 18: ...MAIN UNIT EXPLODED VIEW 18 ...

Page 19: ...CHARGER UNIT EXPLODED VIEW 19 ...

Page 20: ...BATTERY TRAY UNIT EXPLODED VIEW 20 ...

Page 21: ...0 8MM DC31M3G ROHS 089L002986 018 19 SCREW TS D2 6L10 PH FL S S ROHS 067L352610 00200 20 SCREW MS M3 0L09 PH FL S S BLK ROHS 071L130093 50001 21 PLAS CLIP ATTACHMENT PC BLK 3U2X TM832EUL ROHS 056L006981D010 22 CONNECTOR AT RECEP 62 CU TM833USL ROHS 004L990019 01019 23 METAL PALTE CONTECTOR T03 BS NI L12 NV366 063L003684 013 24 SCREW MS M2 0L04 PH W FL MS NI ROHS 070L142004 31104 25 MOTOR YONGLIANX...

Page 22: ...5 8 SCREW M3 0 8 0mm PB IRON 067L130086 10003 Alkaline Battery Tray Ref No Description Mfr s Part No 1 CUSH RUB RING FOR BATT BLK 3U2X TM832EUL ROHS 089L003314D012 2 SPRING FOR BELT CLIP 065L376584 50004 3 SPRING BATTERY A PHOSPHORUS GP L70 D0 6 TM832EUL ROHS 065L002300 018 4 SPRING BATTERY D PHOSPHORUS GP L70D0 6 TM832EUL ROHS 065L002298 015 5 SPRING BATTERY C PHOSPHORUS GP L70 D0 6 TM832EUL ROHS...

Page 23: ...RG82BS 3A1 B103 OHBE ROHS 026L210338 90004 X1 FLTR 450K 4K 20 60 SHOULDER CDB450C24 201L6B450D B0008 X2 XTAL 20M95 2 5PPM 0 50 VINGIN UM 1 15PF 007L32952C 80007 X3 RESON 3M84 D 25 85 SHOULDER ZTA3 84MG ROHS 050L384002 10015 X4 XTAL 9M828000 60 20 60 ROHS 007L982802 90008 CUSH SPON SINGLE COATED 150X5X4 089L40A505 20005 ROHS 089L003532 018 TM832EUL PTT SMD PCBA COBRA EU BLK REV 0 A28P4030126L0006 S...

Page 24: ...93 C127 CAP CSM 100 N K 16 V 0402 X7R 003L211041 61360 C129 CAP CSM 100 N K 16 V 0402 X7R 003L211041 61360 C133 CAP CSM 100 N K 16 V 0402 X7R 003L211041 61360 C149 CAP CSM 10 N K 16 V 0402 X7R MURATA 003L211031 61362 C151 CAP CSM 10 N K 16 V 0402 X7R MURATA 003L211031 61362 C152 CAP CSM 18 P J 50 V 0402 COG MURATA 003L881805 05365 C161 CAP CSM 10 N K 16 V 0402 X7R MURATA 003L211031 61362 C163 CAP ...

Page 25: ...70 CAP CSM 100 N K 16 V 0402 X7R 003L211041 61360 D20 LED SMD ORG 2V1 3216 JOYWOW JW CS 1204O1 JC ROHS 015L000302 10004 D21 LED SMD ORG 2V1 0603 KINGBRIGHT KPT 1608SECK 015L000375 10025 D22 LED SMD ORG 2V1 0603 KINGBRIGHT KPT 1608SECK 015L000375 10025 D23 LED SMD ORG 2V1 0603 KINGBRIGHT KPT 1608SECK 015L000375 10025 D24 LED SMD ORG 2V1 0603 KINGBRIGHT KPT 1608SECK 015L000375 10025 D25 DIODE SCK 15...

Page 26: ...021L210019 10222 R160 RES CF 10K OHM 1 16W J 0402 200PPM ASJ CR10 103 JT 021L210029 10220 R161 RES TFC 120K OHM 1 16W J 0402 200 021L612039 10125 R162 RES TFC 56K OHM 1 16W J 0402 200 021L656029 10127 R165 RES TFC 24K OHM 1 16W J 0402 200 021L624029 10124 R170 RES TFC 0 OHM 1 16W J 0402 200 021L600009 10124 R175 RES TFC 0 39 OHM 1 8 W J 1206 ROHS 021L6390A9 27924 R200 RES TFC 33K OHM 1 16W J 0402 ...

Page 27: ...AP CSM 10 P J 50 V 0402 NPO MURATA GRM1555C1H100JZ01D ROHS 003L51006B 60000 C9 CAP CSM 15 P J 50 V 0402 COG MURATA 003L881505 05362 C10 CAP CSM 10 P J 50 V 0402 NPO MURATA GRM1555C1H100JZ01D ROHS 003L51006B 60000 C11 CAP CSM 10 N K 25 V 0402 X7R MURATA ROHS 003L211032 51364 C12 CAP TC 6 8 U K 10 V 1206 ROHS 664L668524 30001 C13 CAP CSM 1000P K 10 V 0402 X7R 003L211021 01388 C14 CAP CSM 1000P K 10 ...

Page 28: ...M 8 P D 50 V 0402 COG 003L888095 03365 C57 CAP CSM 8 P D 50 V 0402 COG 003L888095 03365 C58 CAP CSM 0 5 P C 50 V 0603 COG MURATA 003L885085 06569 C59 CAP CSM 1 P B 50 V 0603 C0G MURATA GCM1885C1H1R0B ROHS 003L881095 09561 C60 CAP CSM 100 N K 16 V 0402 X7R 003L211041 61360 C61 CAP CSM 4 P C 50 V 0402 COG 003L884095 06369 C62 CAP CSM 3 P C 50 V 0402 COG 003L883095 06367 C63 CAP CSM 8 P D 50 V 0603 N...

Page 29: ...L211032 51364 C101 CAP CSM 10 N K 25 V 0402 X7R MURATA ROHS 003L211032 51364 C103 CAP CSM 100 N K 16 V 0402 X7R 003L211041 61360 C104 CAP CSM 1000P K 10 V 0402 X7R 003L211021 01388 C105 CAP CSM 10 N K 25 V 0402 X7R MURATA ROHS 003L211032 51364 C106 CAP CSM 470 P J 50 V 0402 COG MURATA GMR155C1H471JA01D 003L884715 05368 C107 CAP CSM 10 N K 25 V 0402 X7R MURATA ROHS 003L211032 51364 C108 CAP CSM 22 ...

Page 30: ...C147 CAP CSM 68 N K 10 V 0402 X7R ROHS 003L216831 01360 C148 CAP CSM 100 N K 16 V 0402 X7R 003L211041 61360 C150 CAP CSM 1000P K 10 V 0402 X7R 003L211021 01388 C153 CAP CSM 470 P J 50 V 0402 COG MURATA GMR155C1H471JA01D 003L884715 05368 C154 CAP CSM 100 N K 16 V 0402 X7R 003L211041 61360 C155 CAP CSM 220 N Z 16 V 0402 Y5V MURATA 003L202241 08369 C156 CAP CSM 47 N K 25 V 0402 X7R EYANG 003L214732 5...

Page 31: ... CAP CSM 100 N K 16 V 0402 X7R 003L211041 61360 C215 CAP CSM 100 N K 16 V 0402 X7R 003L211041 61360 C216 CAP CSM 100 N K 16 V 0402 X7R 003L211041 61360 C218 CAP CSM 100 N K 16 V 0402 X7R 003L211041 61360 C219 CAP CSM 100 N K 16 V 0402 X7R 003L211041 61360 C221 CAP CSM 470 P K 50 V 0603 X7R ROHS 003L547166 10005 C222 CAP CSM 220 P J 50 V 0402 COG MURAT GMR155C1H221JA01D 003L882215 05369 C225 CAP TC...

Page 32: ...11032 51364 C269 CAP SCM 4700P K 50 V 0402 X7R MURATA GMR155R71H472KA01D ROHS 003L214725 01365 C271 CAP CSM 100 N K 16 V 0402 X7R 003L211041 61360 C272 CAP CSM 470 N Z 10 V 0402 Y5V 003L204741 08368 D1 DIODE SW 35 V 100M USM ROHM 1SS356 ROHS 010L223560 10000 D2 DIODE SW 35 V 100M USM ROHM 1SS356 ROHS 010L223560 10000 D3 DIODE SW 35 V 100M USM ROHM 1SS356 ROHS 010L223560 10000 D4 DIODE SW 35 V 100M...

Page 33: ...7 INDUCTOR 3 3 NH S 0 13 0603 TOKO LL1608 FSL3N3S 006L433C94 37119 L18 INDUCTOR 6 8 NH J 0603 TOKO LL1608 FSL6N8J 006L468C94 37118 L19 CHOKE 100 NH J 0603 PANASONIC ELJRER10JF3 ROHS 006L810410 60008 L20 INDUCTOR 47 NH J 0603 SUNLORD SDCL1608C47NJT F ROHS 006L947B94 37121 L21 CHOKE 1 UH J 1 10R 2520 TDK NL252018T 1R0J 006L810503 50007 L22 CHOKE 100 NH J 0603 PANASONIC ELJRER10JF3 ROHS 006L810410 60...

Page 34: ... 2SC4901YK HITACHI ROHS 023L234901 30003 Q11 TRS BJN SS SSM 2SC5066 TOSHIBA 120 240 023LC50661 61405 Q12 TRS BJN SS SSM 2SC5066 TOSHIBA 120 240 023LC50661 61405 Q13 TRS BJN SS SSM 2SC5066 TOSHIBA 120 240 023LC50661 61405 Q15 TRS MFN RF SC 82AB 3SK318 HITACHI 023L3K318A 18409 Q16 TRS MFN SS TO 236 2SK302 TOSHIBA ROHS 023L240302 20004 Q17 TRS DTP PW SC 74A FMA8A T148 ROHM ROHS 023L23FMA8 X0009 Q18 T...

Page 35: ...10 101 JT 021L210009 10224 R22 RES CF 100 OHM 1 16W J 0402 200PPM ASJ CR10 101 JT 021L210009 10224 R23 RES TFC 47K OHM 1 16W J 0402 200 021L247029 10223 R24 RES TFC 47K OHM 1 16W J 0402 200 021L247029 10223 R25 RES TFC 47K OHM 1 16W J 0402 200 021L247029 10223 R26 RES CF 100 OHM 1 16W J 0402 200PPM ASJ CR10 101 JT 021L210009 10224 R27 RES TFC 47K OHM 1 16W J 0402 200 021L247029 10223 R28 RES TFC 4...

Page 36: ...21L610031 10125 R75 RES TFC 47 OHM 1 16W J 0402 200 021L647099 10122 R76 RES TFC 100K OHM 1 16W F 0402 200 021L610031 10125 R77 RES CF 4 7 OHM 1 16W J 0402 200PPM ASJ CR10 4R7 JT 021L247089 10221 R78 RES TFC 10 OHM 1 16W J 0402 200 021L610099 10129 R79 RES CF 1K OHM 1 16W J 0402 200PPM ASJ CR10 102 JT 021L210019 10222 R80 RES CF 1K OHM 1 16W J 0402 200PPM ASJ CR10 102 JT 021L210019 10222 R81 RES C...

Page 37: ...472 JT 021L247019 10225 R120 RES CF 1K OHM 1 16W J 0402 200PPM ASJ CR10 102 JT 021L210019 10222 R121 RES TFC 3 3K OHM 1 16W J 0402 200 021L633019 10127 R122 RES TFC 910 OHM 1 16W J 0402 200 ROHS 021L691009 10123 R123 RES TFC 4 7K OHM 1 16W J 0402 200PPM ASJ CR10 472 JT 021L247019 10225 R124 RES CF 1K OHM 1 16W J 0402 200PPM ASJ CR10 102 JT 021L210019 10222 R125 RES TFC 560 OHM 1 16W J 0402 200 ROH...

Page 38: ...0029 10220 R174 RES TFC 100R OHM 1 16W J 0603 200 ROHS 021L610009 15220 R176 RES CF 1M OHM 1 16W J 0402 200PPM ASJ CR10 105 JT 021L210049 10226 R177 RES TFC 560K OHM 1 16W J 0402 200 021L656039 10125 R178 RES CF 10K OHM 1 16W J 0402 200PPM ASJ CR10 103 JT 021L210029 10220 R179 RES CF 10K OHM 1 16W J 0402 200PPM ASJ CR10 103 JT 021L210029 10220 R180 RES TFC 10 OHM 1 16W J 0402 200 021L610099 10129 ...

Page 39: ...0124 R225 RES TFC 22K OHM 1 16W J 0402 200 021L622029 10120 R226 RES TFC 4 7K OHM 1 16W J 0402 200PPM ASJ CR10 472 JT 021L247019 10225 R228 RES CF 100 OHM 1 16W J 0402 200PPM ASJ CR10 101 JT 021L210009 10224 R229 RES CF 1M OHM 1 16W J 0402 200PPM ASJ CR10 105 JT 021L210049 10226 R230 RES TFC 47K OHM 1 16W J 0402 200 021L247029 10223 R231 RES TFC 36K OHM 1 16W J 0402 200 021L636029 10121 R232 RES T...

Page 40: ...8D011 3 INSU SHT NYLON D37 3 TM832EUL SPEAKER FELT 058L002895C013 2 INSU WATERPROOF FILM D9 5MM ROHS 058LD95047 20006 4 KEY RUB FUN 6K MAIN TRANSLUCENT 433C TM833USL ROHS 060L002268C027 31 KEY RUB FUN 2K LEFT TRANSLUCENT 433C TM832EUL ROHS 060L002269C010 7 KEY RUB FUN 2K RIGHT TM832EUL TRANSLUCENT 433C RED 201C ROHS 060L002270C015 CUSH SPON 15 0 7 5 3 1MM BLACK DOUBLE SIDE TAPE ELB 089L003037 018 ...

Page 41: ... ANT ABS BLK 3U2X TM832EUL ROHS 056L007041C015 BATTERY BOX SPONGE 42 8 1mm SI NGLE COATED 089L084201 90001 ALK BATTERY ASSEMBLY TM833USL ALK BATT E M COMP COBRA US BLK REV 0 A29P2730105L0005 6 CAB REAR ALK BATT TM833USL COBRA ABS BLK 3U2X ROHS 052L003065E019 INSU LABL 8B35 75 3 3 9 0 15MM TM833 ROHS 058L002967 012 7 CONT VE PLATE B TM832EUL T02 PHOSPHOR COPPER GP ROHS 061L003057C014 9 CONT COM PLA...

Page 42: ...008 C104 CAP CSM 470 P K 50 V 0603 X7R ROHS 003L547166 10005 C105 CAP CSM 0 1 U K 25 V 0603 X7R 003L510446 10009 C106 CAP CSM 0 1 U K 25 V 0603 X7R 003L510446 10009 C107 CAP CSM 1 N K 50 V 0603 X7R MURATA 003L211025 01568 C109 CAP CSM 1 U K 10 V 0603 X5R ROHS 003L261050 61562 C110 CAP CSM 0 1 U K 25 V 0603 X7R 003L510446 10009 C111 CAP CSM 100 P J 50 V 0603 NPO 003L151015 05564 C112 CAP CSM 0 1 U ...

Page 43: ...L682019 15120 R19 RES TFC 82K OHM 1 16W J 0603 200 021L682029 15128 R20 RES TFC 2 43KOHM 1 16W F 0603 200 021L624311 15123 R21 RES TFC 2K OHM 1 16W J 0603 200 021L620019 15128 R22 RES TFC 560 OHM 1 16W J 0603 200 021L656009 15121 R23 RES TFC 560 OHM 1 16W J 0603 200 021L656009 15121 R24 CHIP RES 1608 0 OHM 1 10W 5 021L500073 10007 R25 RES TFC 10K OHM 1 16W J 0603 200 021L610029 15123 R27 RES TFC 2...

Page 44: ... 087L008163 013 LABEL ST LENS PROTECT FILM TM833USL ROHS 087L008187 017 LABEL FCC TM833USL GIFT BOX ROHS 087L008208 011 BAG PE 550 550 0 08MM TM832USL ROHS 088L003536 024 PE PVC BAG 90 150MM T 0 03MM 088L150090 20000 PE PVC BAG 1 1 4 8 1 2 T 0 03m m 088L216032 20000 BAG PE PVC 105 230 0 03MM ROHS 088L230105 20002 PE PVC BAG 155 265MM T0 05MM 088L265155 20001 WRIST STRAP 123L250600 20004 BELT CLIP ...

Page 45: ...ption Mfr s Part No BAG PE 165 180MM FOR NC886G CHG ROHS 088L003395 019 TM886BEUG PKG MAT L CHG SCREW COBRA EUR BLACK REV 0 886P1702300L0000 SCREW TS D3 0L23 PH SH S S ROHS 067L130235 50008 BAG PE 40X60MM T 0 04MM ROHS 088L060040 20009 PART LIST 45 ...

Page 46: ... 4 5 6 7 1 8 14 13 12 11 10 9 15 16 16TSSOP PIN FUNCTION 1 1 OSC 2 2 OSC 3 MIXER OUT 4 VCC 5 IF IN 6 BY PASS 7 FILTER OUTPUT 8 FILTER INPUT 9 AUDIO 10 DISCRIMINATOR 11 IF OUTPUT 12 RSSI 13 COMP OUTPUT 14 COMP INPUT 15 GND 16 MIXER U BA FV 1 4116 46 ...

Page 47: ...1 090 2 3 4 5 6 7 1 8 14 13 12 11 10 9 15 16 16TSSOP Fin1 Vcc CP1 GND LD CK DATA EN Fin2 Vcc CP2 GND SW OSC1 OSCO BO U NJM M 3 10 2904 U PIN FUNCTION 1 A OUTPUT 2 A INPUT 3 A INPUT 4 GND 5 B INPUT 6 B INPUT 7 B OUTPUT 8 V 47 ...

Page 48: ...U4 9032 HT D 48 ...

Page 49: ...U5 M38C29FFAHP60K 49 ...

Page 50: ...2 1 3 1 VOUT 2 VSS 3 VIN Delay Circuitry Vref VSS VOUT VIN U6 XC61FC4012MR U7 U8 U9 NJM324 50 ...

Page 51: ...1 2 3 4 8 7 6 5 A0 A1 A2 GND VCC WP SCL SDA U AT C N 11 24 16 U12 XC6204B502MR 51 ...

Page 52: ...U13 74HC4053PW 1 2 3 4 5 6 7 8 NC V OUTPUT GND GND NC INPUT INPUT 1 3 2 4 5 6 7 8 NC V OUTPUT GND GND NC INPUT INPUT BIAS 300 50K 100K U14 NJM2070 52 ...

Page 53: ...U401 HT1621 DICE U402 ISD1730X BONDING 53 ...

Page 54: ...Gate 1 2 Gate 2 3 Drain 4 Source 1 Emitter 2 Collector 3 Base 1 Gate 2 Drain 3 Source 1 Gate 2 Source 3 Drain 3 2 1 3 2SA1363 2 2 1 3 2SA1577Q 1 Base 2 Emitter 3 Collector 1 Emitter 2 Base 3 Collector 2 1 3 1 Emitter 2 Base 3 Collector TRANSISTOR LEAD IDENTIFICATION 2 4097 SC R 3SK318 2SK302 54 ...

Page 55: ...FMA A 8 1 2 3 4 5 1 Collector 2 Collector 3 Base 4 Emitter 5 Base UC F 1 Gate 2 Source heat sink 3 Drain 2SK3476 1 Base 2 Emitter 3 Collector handbook halfpage 1 2 3 PDTA143ZE PDTC143ZE 55 ...

Page 56: ... 5 90 4 86 3 33 0 31 0 31 0 95 7 20 Tx U UHF Mid 0 44 4 89 4 84 0 08 0 45 0 45 1 63 7 20 Tx U UHF Hi 0 56 4 87 4 82 0 10 0 57 0 57 2 45 7 20 Tx V VHF Lo 0 28 5 64 4 87 0 06 0 29 0 29 1 76 7 20 Tx V VHF Mid 0 43 4 91 4 85 0 08 0 45 0 45 2 59 7 20 Tx V VHF Hi 0 54 4 89 4 82 0 10 0 57 0 57 3 35 7 20 U4 HT9032D 8SOP PIN 1 2 3 4 5 6 7 8 Dout VOD TIP RNG PDWN Vss X2 X1 Rx V 4 47 4 51 0 0 0 0 1 98 1 90 U...

Page 57: ...3 4 5 6 7 8 Rx V WX 1 72 1 72 1 72 0 1 72 1 72 1 76 4 82 U11 AT24C16BN PIN 1 2 3 4 5 6 7 8 A0 A1 A2 GND SDA SCL WP Vcc TX Rx V 0 0 0 0 4 98 0 0 4 99 U12 XC6204B502MR PIN 1 2 3 4 5 Vin Vss NC NC Vou TX Rx V 7 20 0 7 20 0 5 00 U13 74HC4053PW PIN 1 2 3 4 5 6 7 8 2Y1 2Y0 SY1 3Z SY0 E Vee GND Rx V 0 1 88 0 0 0 0 0 0 Tx V 0 12 1 95 0 0 0 0 0 0 PIN 9 10 11 12 13 14 15 16 S3 S2 S1 1Y0 1Y1 1Z 2Z Vcc Rx V 0...

Page 58: ...40 Standby V 0 55 0 0 65 0 0 12 00 12 00 2 00 U02 S324 CHARGER PIN 1 2 3 4 5 6 7 8 9 10 11 12 Chargeing V 0 1 60 0 50 12 00 0 38 0 30 11 00 1 60 0 0 07 0 2 50 Standby V 11 00 6 00 0 50 12 00 0 0 0 0 0 0 0 2 20 PIN 13 14 Chargeing V 2 50 5 50 Standby V 2 50 0 U03 TL431IDBVR CHARGER PIN 1 2 3 4 5 Chargeing V 2 50 0 0 0 2 50 Standby V 2 50 0 0 0 2 50 VOLTAGE CHART CONTINUED 58 ...

Page 59: ... 0 73 1 58 0 0 76 2 97 0 0 73 2 22 PIN E B C E B C E B C Tx V UHF 0 0 81 4 34 0 0 83 2 74 2 53 3 00 3 35 Rx V UHF 2 36 3 00 2 37 PIN E B C Tx V VHF Rx V VHF 0 00 0 53 3 76 PIN E B C Tx V UHF 1 22 1 88 2 35 Rx V UHF 1 14 1 86 2 26 PIN E B C Vox01 V 0 64 0 12 0 63 Vox02 V 0 64 0 12 0 64 Vox03 V 1 99 5 00 0 Vox04 V 1 98 4 99 0 Vox05 V 2 00 5 00 0 VOLTAGE CHART CONTINUED Q1 2SK3476 Q2 2SK3078 Q14 2SA1...

Page 60: ...4 99 0 PIN E B C Rx V VHF 5 00 0 4 98 PIN G S D Tx V VHF 0 0 51 4 12 PIN E B C Tx V UHF 3 83 0 3 80 Rx V VHF 4 00 4 00 0 PIN E B C Rx V VHF 4 76 0 05 4 75 Rx V UHF 4 81 4 92 4 82 PIN E B C Motors Off V 0 0 7 2 PIN E B C Rx V VHF 4 68 0 14 Q20 2SK210Y VOLTAGE CHART CONTINUED Q16 2SK302 Q19 PDTA143ZE Q21 PDTA143ZE Q22 PDTA143ZE Q17 FMA8A T148 Q18 FMA8A T148 Q15 3SK318 Q23 2SC4097R Q24 PDTC143ZE 60 ...

Page 61: ...4 85 7 18 PIN E B C Tx V VHF 0 0 07 1 46 Tx V UHF 0 0 06 0 82 PIN E B C TX RX V 4 50 5 00 6 65 PIN E B C Rx V 0 0 7 20 PIN E B C Tx V VHF 0 3 97 0 06 Tx V UHF 0 3 77 0 06 PIN E B C TX RX V 7 20 6 65 5 00 Q27 PDTC143ZE Q28 PDTC143ZE Q25 PDTC143ZE VOLTAGE CHART CONTINUED Q26 PDTC143ZE Q29 2SA1577 Q34 2SC4097R Q35 2SC4097R Q36 PDTC143ZE Q37 PDTC143ZE Q31 2SA1577 Q38 2SA1363 Q32 PDTC143ZE Q33 2SC4097R...

Page 62: ...50 12 00 10 00 8 20 9 00 10 00 12 00 Standby V 0 12 00 0 12 00 7 40 12 00 3 90 7 40 12 00 PIN B E C B E C B E C Chargeing V 0 0 10 00 0 0 0 70 0 70 0 0 Standby V 1 70 0 0 0 70 0 0 0 0 10 00 VOLTAGE CHART CONTINUED Q39 2SA1577 Q40 2SA1577 Q41 2SC5066 Q05 MMBT3904LT1 Q06 MMBT3904LT1 Q01 MMBT3904LT1 Q1 BSP613P Q02 MMBT3904LT1 Q04 MMBT3904LT1 62 ...

Page 63: ... VR1 10K R106 47K C124 22U C177 100P R170 R173 R171 0 R172 TCXO F5 450KG C113 9P R181 220K R48 4 7K C81 1n R51 1K R27 47K L39 39nH L40 15nH L41 2 2uH C8 10P C167 470P C165 6P C74 15P C112 22P C105 10n C107 10n D7 1 356 SS Q7 2 4901 SC Q8 2 5066 SC R54 2 2K R186 390 R125 560 C168 470P C50 1P L38 39nH C164 6P R206 5 6K TP2 UPD R195 2K R198 2 7K Q13 2 5066 SC VD1 HVU202 R192 220 C166 6P R199 4 7K R10...

Page 64: ...8 30 S17 31 S16 32 S15 33 S14 34 S13 35 S12 36 S11 37 S10 38 S9 39 S8 40 S7 41 S6 42 S5 43 S4 44 S3 45 S2 46 S1 47 S0 48 U401 HT1621 Vccd 1 LED 2 Reset 3 MISO 4 MOSI 5 Sclk 6 SS 7 Vssa 8 Analn 9 MIC 10 MIC 11 Vssp2 12 SP 13 Vccp 14 SP 15 Vssp1 16 AUD AUX 17 AGC 18 VOL 19 R osc _ 20 Vcca 21 FT 22 Play 23 REC 24 Erase 25 R osc _ 26 INT RDY 27 Vssd 28 U402 ISD1730 R401 4 7k Vcc DATA CLK CS Vcc R406 6...

Page 65: ...0 22 1 R W R08 18K C201 47 16 uF V C205 330 25 uF V C206 47 16 uF V C204 47 16 uF V 2 3 1 11 4 IC A 02 LM324 IC C 02 IC D 02 Q01 BT3904 LED R G IC03 TL A 431 J1 L1 60uH L2 120uH D1 1 4001 N D2 340T 1 2 3 4 8 7 6 5 IC01 MC A 34063 C203 47 16 uF V Vcc CHG PLATE CHG PLATE BATT VOL MONITOR R09 820 VCC 2 5V 2 5V Vcc 2 5V R02 0 1 1 R W 9 10 8 13 12 14 DC IN V mA 12 750 R25 10K R15 2 2K R16 470 R23 560 R...

Search results

Summary of Contents for MR HH425 LI VP

Reviews:

Related manuals for MR HH425 LI VP

Brands by name

Popular brands

Cobra MR HH425 LI VP, Serivce Manual

Search results

Summary of Contents for MR HH425 LI VP

Reviews:

Related manuals for MR HH425 LI VP

Brands by name

Popular brands