Cobra MR HH475 FLT BT/EU Service Manual
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Cobra MR HH475 FLT BT/EU Service Manual

Marine handheld transceiver
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MARINE HANDHELD TRANSCEIVER
Catalog Number: MR HH475 FLT BT/EU
CONTENTS
Page
Specifications........................................................................................................................................................2
Theory of Operation...............................................................................................................................................4
Block Diagram.......................................................................................................................................................7
Disassembly Instructions................................................................... ..................................................................8
Alignment Procedures...........................................................................................................................................9
Adjustment Procedure.........................................................................................................................................10
Wiring Diagram....................................................................................................................................................11
Printed Circuit Board............................................................................................................................................12
Troubleshooting..................................................................................................................................................15
Exploded View.....................................................................................................................................................16
Exploded View Part List......................................................................................................................................18
Electrical &Packing &Other Parts List..................................................................................................................20
IC Lead Identification and Internal Diagram.........................................................................................................52
Transistor Lead Identification...............................................................................................................................61
Voltage Chart.......................................................................................................................................................62
Schematic Diagram.............................................................................................................................................66
Version:01 Date: Mar 16, 2010

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Summary of Contents for Cobra MR HH475 FLT BT/EU

  • Page 1: Table Of Contents

    MARINE HANDHELD TRANSCEIVER Catalog Number: MR HH475 FLT BT/EU CONTENTS Page Specifications................................2 Theory of Operation...............................4 Block Diagram...............................7 Disassembly Instructions.............................8 Alignment Procedures............................9 Adjustment Procedure............................10 Wiring Diagram..............................11 Printed Circuit Board............................12 Troubleshooting..............................15 Exploded View..............................16 Exploded View Part List............................18 Electrical &Packing &Other Parts List........................20 IC Lead Identification and Internal Diagram......................52...

  • Page 2: Specifications

    SPECIFICATIONS DESCRIPTION Unit LIMIT Frequency Range: Transmit 156.025 To 157.425. Frequency Range: Receive 156.050 To 162.025 (Eu) 156.050 To 163.275 (Us) Number Of Channels 59 INT, 57 USA, 57 Canada 100 Memory Channels 10 Weather Channels (Us) Oscillate Mode Modulation FM(16K0G3E) Channel Spacing Frequency Stability...
  • Page 3 TRANSMITTER Carrier power(no mod) 6±0.8 3±0.5 0.8±0.2 Carrier freq. Tolerance ± 10 Modulation limiting ±kHz 4.3~ 4.9 Modulation sens.For ±3 kHz dev. 7±3 Audio frequency response ( 1KHz / 0dB ref ) @300HZ -12 ± 3 @2500HZ +7 ± 3 Audio distortion @ 2.5 kHz dew.

  • Page 4: Theory Of Operation

    THEORY OF OPERATION This PLL - controlled VHF marine transceiver provides an accurate and stable multi-channel operation. The transceiver consists of 8 main sections: Transmitter Receiver Low voltage detection Voice recorder Local oscillator PLL (Phase Lock Loop) Circuit Memory backup Bluetooth ATIS(Automatic Transmitter Identification System) Only for HH475Eu Transmitter...
  • Page 5 then is amplified by Q2 and the IF amplifier U1 (BA4116). U1 is a integrated RF amplifier which consists of a local oscillator, a demodulator, a second mixer, squelch control circuit, and RF amplifier. The 21.4 MHz IF then is mixed here with second mixer and converted into 2nd Immediate Frequency (IF) 450 kHz. The 2nd IF passes through a ceramic filter F5 to filter out the residue unwanted signal at pin 5 of U1 (BA4116) output this final IF signal and the Audio signal is output at pin 9 of U1 (BA4116).
  • Page 6 BT-ANT; When Bluetooth receiving, Bluetooth RF signal comes from BT-ANT via U7 and U13 then changes to voice signal from U13 Pin 4 output. ATIS(Automatic Transmitter Identification System) ONLY for HH475EU ATIS circuit consists of U5(1/4),U4(4/4) and CPU U7, when receiving the AF signal from U1 Pin 9 via U5(1/4) then pass to CPU U7 Pin 43, when transmitting AITS PWM signal form U7 Pin 45 output then via U4(4/4) pass to TX VCO Varicap D11 then mixes with the carrier to form the modulated signal.

  • Page 7: Block Diagram

    BLOCK DIAGRAM (for HH475)

  • Page 8: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS To remove the front and rear panels from the main chassis: 1. Remove the SPK/MIC and VOL/SQL knob from the main unit. 2. Remove 4 screws from the rear housing for main unit. 3. Detach the rear housing from the front housing.

  • Page 9: Alignment Procedures

    ALIGNMENT PROCEDURES This transceiver is completely aligned at the factory and does not require any adjustments for installation. However it is considered as good practice to verify that none of the adjustments have changed. The test equipment 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.

  • Page 10: Adjustment Procedure

    ADJUSTMENT PROCEDURE Step Adjustment Test Point Procedure Connect digital voltmeter to TP1 on RF PCB. Set CH01 . L18 Receive Adjust L18. TP1 voltage 1.2~1.6V DC. Connect a digital voltmeter to TP1 on RF PCB. Set CH01 . L20 Transmit Adjust L20.

  • Page 11: Wiring Diagram

    WIRING DIAGRAM...

  • Page 12: Printed Circuit Board

    PRINTED CIRCUIT BOARD Main PCB Top View...
  • Page 13 PRINTED CIRCUIT BOARD Main PCB Bottom View...
  • Page 14 PRINTED CIRCUIT BOARD Cradle Charger PCB View Top View Bottom View...

  • Page 15: Troubleshooting

    TROUBLESHOOTING Item Symptom Possible Cause Defective power switch VR3. Unit does not turn on. Check the battery voltage. Defective regulator U8. Speaker no sound with Defective volume control. AF signal applied to Defective speaker. volume control Defective U11 and/or associated components. Check squelch control.

  • Page 16: Exploded View

    EXPLODED VIEW (for HH475 Main Part)
  • Page 17 EXPLODED VIEW (for Battery and Antenna)

  • Page 18: Exploded View Part List

    INSU-SHET PVC W L36 W36 D-- ASTIGMATISM 270102604-00001-10 D-LENS PMMA MU TM832FEUL Transparent L40 270101425-11002-10 SCREW-TS WRH L5 D2 + CZ F RWB (Four) 260100191-00000-10 TM833FBEUL /PCBA MAIN/PCBA /R0 COBRA/EU/ 330200008-00000-10 M-COVR MU AL L67 W33.2 H6 260300141-11001-10 O-RING MU BK RUB H1.4OD--L118.5W62 3U2X 270200053-12001-10 M-WASH MU CU NI L10.55 W1.09 H0.2 (Two)
  • Page 19 EXPLODED VIEW PART LIST - CONTINUED Battery Part Description Mfr's Part No. Location Codes P-BATT-DR BU ABS BK TM832EUL 3U2X 270101071-12001-10 FOAM-HDR SPNG L40W8T1 Black (Two) 320100666-00001-10 BAT-R PRISM LI 7.4V 1000MAH TP603450 TEC 230400180-00000-10 O-RING BD BK RUB H5.4OD--L94.05W59 270200380-13001-10 P-RCAB BT ABS BK TM833 3U 2X 270100953-11001-10...

  • Page 20: Electrical &Packing &Other Parts List

    Description Mfr's Part No. TM833FBEUL /U- U-M /R0 COBRA/EU 330100058-00000-10 TM833FBEUL /U- MAIN/UNIT /R0 COBRA/EU 330100062-00000-10 TM833USL /E&M ALK BATT COMP /R0 COBRA-US 330503423-00000-10 SPRING COS GD WD0.6 L31.2 260200065-00000-10 SPRING COS GD WD0.6 L22.1(Two) 260200066-00000-10 SPRING COS GD WD0.6 L22.1(Two) 260200067-00000-10 SPRING COS GD WD0.6 L23.3...
  • Page 21 RES TFC 4.7 Kohm 0402 J 1/16W 280101287-00000-10 R402 RES TFC 100 ohm 0402 J 1/16W 280100919-00000-10 TM832EUL /SMTA PTT PCBA /R0 COBRA-EUR 330401964-00000-10 SW-TACT SMD V 12V 5mA TSUY-2SL 1P2T HUA (Two) 240400313-00000-10 PCB DS FR4 GP PTT2 L33W8T1...
  • Page 22 PARTS LIST (HH475 Eu) - CONTINUED Main PCB Assembly Location Codes Description Mfr's Part No. C233 CAP-CCER 1000 pF K 50 VDC 0402 X7R 1570- 280200327-00000-10 C234 CAP-CCER 1000 pF K 50 VDC 0402 X7R 1570- 280200327-00000-10 C236 CAP-CCER 1000 pF K 50 VDC 0402 X7R 1570- 280200327-00000-10 C237 CAP-CCER 100 nF K 16 VDC 0402 X7R...
  • Page 23 PARTS LIST (HH475 Eu) - CONTINUED Main PCB Assembly Location Codes Description Mfr's Part No. R149 RES TFC 100 Kohm 0402 F 1/16W 280100939-00000-10 R153 RES TFC 1 Kohm 0402 J 1/16W 280100929-00000-10 R154 RES TFC 2.2 Kohm 0402 J 1/16W 280101100-00000-10 R156 RES TFC 1 Kohm 0402 J 1/16W...
  • Page 24 PARTS LIST (HH475 Eu) - CONTINUED Main PCB Assembly Location Codes Description Mfr's Part No. CAP-CCER 3 pF C 50 VDC 0402 COG 280200811-00000-10 CAP-CCER 10 pF J 50 VDC 0402 NPO 1570-03 280200583-00000-10 CAP-CCER 10 pF J 50 VDC 0402 NPO 1570-03 280200583-00000-10 CAP-CCER 33 pF J 50 VDC 0603 NPO 280200236-00000-10...
  • Page 25 PARTS LIST (HH475 Eu) - CONTINUED Main PCB Assembly Location Codes Description Mfr's Part No. CAP-CCER 22 pF J 50 VDC 0402 COG 280200783-00000-10 CAP-CCER 68 pF J 50 VDC 0603 NPO 280200268-00000-10 CAP-CCER 22 pF J 50 VDC 0603 NPO 280200214-00000-10 CAP-CCER 8 pF D 50 VDC 0402 COG 280200883-00000-10...
  • Page 26 PARTS LIST (HH475 Eu) - CONTINUED Main PCB Assembly Location Codes Description Mfr's Part No. C140 CAP-CCER 100 nF K 16 VDC 0402 X7R 280200343-00000-10 C143 CAP-CCER 220 pF J 50 VDC 0402 COG 280200786-00000-10 C144 CAP-CCER 100 nF K 16 VDC 0402 X7R 280200343-00000-10 C145 CAP-CCER 220 pF J 50 VDC 0402 COG...
  • Page 27 PARTS LIST (HH475 Eu) - CONTINUED Main PCB Assembly Location Codes Description Mfr's Part No. C206 CAP-CCER 470 pF J 50 VDC 0402 COG 280200840-00000-10 C207 CAP-CCER 100 nF K 16 VDC 0402 X7R 280200343-00000-10 C210 CAP-CCER 100 nF K 16 VDC 0402 X7R 280200343-00000-10 C211 CAP-CCER 2 pF C 50 VDC 0402 COG...
  • Page 28 PARTS LIST (HH475 Eu) - CONTINUED Main PCB Assembly Location Codes Description Mfr's Part No. AIR-COIL SMD D2 L2 T3 0.5WR + 280300167-00000-10 IND-SMD 0.1 uH +-5% Q8 0603 SDCL1608CR10 280300668-00000-10 IND-SMD 0.1 uH +-5% Q8 0603 SDCL1608CR10 280300668-00000-10 IND-SMD 0.1 uH +-5% Q8 0603 SDCL1608CR10 280300668-00000-10 IND-SMD 0.1 uH +-5% Q8 0603 SDCL1608CR10 280300668-00000-10...
  • Page 29 PARTS LIST (HH475 Eu) - CONTINUED Main PCB Assembly Location Codes Description Mfr's Part No. RES TFC 220 ohm 0402 J 1/16W 280101096-00000-10 RES TFC 220 ohm 0402 J 1/16W 280101096-00000-10 RES TFC 220 ohm 0402 J 1/16W 280101096-00000-10 RES TFC 220 ohm 0402 J 1/16W 280101096-00000-10 RES TFC 220 ohm 0402 J 1/16W 280101096-00000-10...
  • Page 30 PARTS LIST (HH475 Eu) - CONTINUED Main PCB Assembly Location Codes Description Mfr's Part No. RES TFC 330 ohm 0402 J 1/16W 280101196-00000-10 RES TFC 2.2 Kohm 0402 J 1/16W 280101100-00000-10 RES TFC 220 ohm 0402 J 1/16W 280101096-00000-10 RES TFC 33 Kohm 0402 J 1/16W 280101205-00000-10 RES TFC 200 Kohm 0402 F 1/16W 280101079-00000-10...
  • Page 31 PARTS LIST (HH475 Eu) - CONTINUED Main PCB Assembly Location Codes Description Mfr's Part No. R128 RES TFC 47 Kohm 0402 J 1/16W 280101294-00000-10 R129 RES TFC 47 Kohm 0402 J 1/16W 280101294-00000-10 R130 RES TFC 47 Kohm 0402 J 1/16W 280101294-00000-10 R131 RES TFC 47 Kohm 0402 J 1/16W...
  • Page 32 A-IC ANA NJM2070M DMP 8 210100211-00000-10 VR-ST LIN 50 Kohm P 0.15W SMD V R EVM3YS 280101767-00000-10 Li - Polymer Battery Assembly TM833FBEUL /E&M LI BATTERY /R0 COBRA/EU 330500022-00000-10 BAT-R PRISM LI 7.4V 1000MAH TP603450 TEC 230400180-00000-10 MAG-CORE Ferrite D8.0 H4.0 IR4H0804-4.5T 280301131-00000-10 TUBE ROLL OD1.4 ID1 BK...
  • Page 33 270102093-12001-10 P-CAP BU ABS BK TM833/832 ANT 3U2X 270102110-11001-10 Cradle Charger Assembly TM833FBEUL /U- CHG/UNIT /R0 COBRA/EU 330100063-00000-10 TM832FEUL /E&M CRADLE CHG COMP /R0 COBRA 330503710-00000-10 SCREW-TS PH L8 D3 + F PB 260100126-00000-10 CON-CHAR PB T0.3H6.8WD-- GD (Three) 260300378-11001-10...
  • Page 34 A-IC ANA NJM3403AM-#ZZZB DMP 14 210100215-00000-10 U102 O-IC PWR TL431IDBVR SOT23 3 TI 210100636-00000-10 PCB DS FR4 GP CHG 1-1 L54.5W38T1.0 250100101-00001-10 HH475E Packing Material TM833FBEUL /PKG -BOX /R0 COBRA/EU 330700047-00000-10 ML-AS TM308USL Open L148.5W105 PRODUCT R 300100572-00001-10 ML-IN TM833FBUSL COBRA L162W26 300102316-00001-10...
  • Page 35 Mfr's Part No. ML-QSG TM833FBUSL COBRA L127W179 300102318-00001-10 LB-S LENS TM833FBEUL LENS L24W33 300205359-00001-10 LB-B TM833FBEUL EAN128 COBRA V1(Two) 300205430-00001-10 LB-G CTN TM308USL CAUT L120W110 COBRA RE 300205769-00001-10 P-BAG PELD W127L406.4T0.05 300301803-00002-10 P-BAG PELD W600L750T0.08 300301990-00001-10 IS-CTN L320W310 B=B TM833FBEUL 300609360-00001-10 ML-IB TM833FBEUL COBRA L179W127 REV2.0...
  • Page 36 Description Mfr's Part No. TM833FBUSL /U- U-M /R0 COBRA/US 330100057-00000-10 TM833FBUSL /U- MAIN/UNIT /R0 COBRA/US 330100061-00000-10 TM833USL /E&M ALK BATT COMP /R0 COBRA-US 330503423-00000-10 SPRING COS GD WD0.6 L31.2 260200065-00000-10 SPRING COS GD WD0.6 L22.1(Two) 260200066-00000-10 SPRING COS GD WD0.6 L22.1(Two) 260200067-00000-10 SPRING COS GD WD0.6 L23.3...
  • Page 37 RES TFC 4.7 Kohm 0402 J 1/16W 280101287-00000-10 R402 RES TFC 100 ohm 0402 J 1/16W 280100919-00000-10 TM832EUL /SMTA PTT PCBA /R0 COBRA-EUR 330401964-00000-10 SW-TACT SMD V 12V 5mA TSUY-2SL 1P2T HUA (Two) 240400313-00000-10 PCB DS FR4 GP PTT2 L33W8T1...
  • Page 38 PARTS LIST (HH475 US) - CONTINUED Main PCB Assembly Location Codes Description Mfr's Part No. C233 CAP-CCER 1000 pF K 50 VDC 0402 X7R 1570- 280200327-00000-10 C234 CAP-CCER 1000 pF K 50 VDC 0402 X7R 1570- 280200327-00000-10 C236 CAP-CCER 1000 pF K 50 VDC 0402 X7R 1570- 280200327-00000-10 C237 CAP-CCER 100 nF K 16 VDC 0402 X7R...
  • Page 39 PARTS LIST (HH475 US) - CONTINUED Main PCB Assembly Location Codes Description Mfr's Part No. R149 RES TFC 100 Kohm 0402 F 1/16W 280100939-00000-10 R153 RES TFC 1 Kohm 0402 J 1/16W 280100929-00000-10 R154 RES TFC 2.2 Kohm 0402 J 1/16W 280101100-00000-10 R156 RES TFC 1 Kohm 0402 J 1/16W...
  • Page 40 PARTS LIST (HH475 US) - CONTINUED Main PCB Assembly Location Codes Description Mfr's Part No. CAP-CCER 3 pF C 50 VDC 0402 COG 280200811-00000-10 CAP-CCER 10 pF J 50 VDC 0402 NPO 1570-03 280200583-00000-10 CAP-CCER 10 pF J 50 VDC 0402 NPO 1570-03 280200583-00000-10 CAP-CCER 33 pF J 50 VDC 0603 NPO 280200236-00000-10...
  • Page 41 PARTS LIST (HH475 US) - CONTINUED Main PCB Assembly Location Codes Description Mfr's Part No. CAP-CCER 22 pF J 50 VDC 0402 COG 280200783-00000-10 CAP-CCER 68 pF J 50 VDC 0603 NPO 280200268-00000-10 CAP-CCER 22 pF J 50 VDC 0603 NPO 280200214-00000-10 CAP-CCER 8 pF D 50 VDC 0402 COG 280200883-00000-10...
  • Page 42 PARTS LIST (HH475 US) - CONTINUED Main PCB Assembly Location Codes Description Mfr's Part No. C140 CAP-CCER 100 nF K 16 VDC 0402 X7R 280200343-00000-10 C143 CAP-CCER 220 pF J 50 VDC 0402 COG 280200786-00000-10 C144 CAP-CCER 100 nF K 16 VDC 0402 X7R 280200343-00000-10 C145 CAP-CCER 220 pF J 50 VDC 0402 COG...
  • Page 43 PARTS LIST (HH475 US) - CONTINUED Main PCB Assembly Location Codes Description Mfr's Part No. C205 CAP-CCER 47 nF K 25 VDC 0402 X7R 280200453-00000-10 C206 CAP-CCER 470 pF J 50 VDC 0402 COG 280200840-00000-10 C207 CAP-CCER 100 nF K 16 VDC 0402 X7R 280200343-00000-10 C210 CAP-CCER 100 nF K 16 VDC 0402 X7R...
  • Page 44 PARTS LIST (HH475 US) - CONTINUED Main PCB Assembly Location Codes Description Mfr's Part No. AIR-COIL SMD D2 L2 T3 0.5WR + 280300167-00000-10 IND-SMD 0.1 uH +-5% Q8 0603 SDCL1608CR10 280300668-00000-10 IND-SMD 0.1 uH +-5% Q8 0603 SDCL1608CR10 280300668-00000-10 IND-SMD 0.1 uH +-5% Q8 0603 SDCL1608CR10 280300668-00000-10 IND-SMD 0.1 uH +-5% Q8 0603 SDCL1608CR10 280300668-00000-10...
  • Page 45 PARTS LIST (HH475 US) - CONTINUED Main PCB Assembly Location Codes Description Mfr's Part No. RES TFC 220 ohm 0402 J 1/16W 280101096-00000-10 RES TFC 220 ohm 0402 J 1/16W 280101096-00000-10 RES TFC 220 ohm 0402 J 1/16W 280101096-00000-10 RES TFC 220 ohm 0402 J 1/16W 280101096-00000-10 RES TFC 220 ohm 0402 J 1/16W 280101096-00000-10...
  • Page 46 PARTS LIST (HH475 US) - CONTINUED Main PCB Assembly Location Codes Description Mfr's Part No. RES TFC 330 ohm 0402 J 1/16W 280101196-00000-10 RES TFC 2.2 Kohm 0402 J 1/16W 280101100-00000-10 RES TFC 220 ohm 0402 J 1/16W 280101096-00000-10 RES TFC 33 Kohm 0402 J 1/16W 280101205-00000-10 RES TFC 200 Kohm 0402 F 1/16W 280101079-00000-10...
  • Page 47 PARTS LIST (HH475 US) - CONTINUED Main PCB Assembly Location Codes Description Mfr's Part No. R128 RES TFC 47 Kohm 0402 J 1/16W 280101294-00000-10 R129 RES TFC 47 Kohm 0402 J 1/16W 280101294-00000-10 R130 RES TFC 47 Kohm 0402 J 1/16W 280101294-00000-10 R131 RES TFC 47 Kohm 0402 J 1/16W...
  • Page 48 A-IC ANA NJM2070M DMP 8 210100211-00000-10 VR-ST LIN 50 Kohm P 0.15W SMD V R EVM3YS 280101767-00000-10 Li - Polymar Battery Part TM833FBEUL /E&M LI BATTERY /R0 COBRA/EU 330500022-00000-10 BAT-R PRISM LI 7.4V 1000MAH TP603450 TEC 230400180-00000-10 MAG-CORE Ferrite D8.0 H4.0 IR4H0804-4.5T 280301131-00000-10 TUBE ROLL OD1.4 ID1 BK...
  • Page 49 MIC CDR -U -38dB 10V D6.0 T2.7 EM-27PX-5 290100345-00000-10 Cradle Charger Part TM833FBEUL /U- CHG/UNIT /R0 COBRA/EU 330100063-00000-10 TM832FEUL /E&M CRADLE CHG COMP /R0 COBRA 330503710-00000-10 SCREW-TS PH L8 D3 + F PB 260100126-00000-10 CON-CHAR PB T0.3H6.8WD-- GD (Three) 260300378-11001-10...
  • Page 50 A-IC ANA NJM3403AM-#ZZZB DMP 14 210100215-00000-10 U102 O-IC PWR TL431IDBVR SOT23 3 TI 210100636-00000-10 PCB DS FR4 GP CHG 1-1 L54.5W38T1.0 250100101-00001-10 Packing Material Part TM833FBUSL /PKG -BOX /R0 COBRA/US 330700046-00000-10 ML-IN TM833FBUSL COBRA L162W26 300102316-00001-10 ML-QSG TM833FBUSL COBRA L127W179 300102318-00001-10...
  • Page 51 300200280-00002-10 LB-G TM833USL WARN L49.5W11 REPLACEMENT 300201332-00001-10 LB-S LENS TM833FBUSL TRANS L24W33 300205358-00001-10 LB-B TM833FBUSL EAN128 COBRA V1(Two) 300205427-00001-10 LB-G CTN TM308USL CAUT L120W110 COBRA RE 300205769-00001-10 P-BAG PELD W127L406.4T0.05 300301803-00002-10 IS-CTN L320W155 B=B TM833FUSL 300609359-00001-10 ML-IB TM833FBUSL COBRA L179W127...

  • Page 52: Ic Lead Identification And Internal Diagram

    IC LEAD IDENTIFICATION AND INTERNAL DIAGRAM 4116 PIN FUNCTION 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.
  • Page 53 2904 PIN FUNCTION 1.A OUTPUT 2.A - INPUT 3.A +INPUT 4.GND 5.B +INPUT 6.B - INPUT 7.B OUTPUT U3-XC61CN2702MR Block Diagram CMOS Output...
  • Page 54 U4, U5-...
  • Page 55 U GP214D Block Diagram PIN Description Pin No. Symbol Function Description I / O Fin1 RF input, channel 1. Power supply. 2, 15 Two pins are connected each other. Charge pum p output, cha nnel 1. Charg e pu mp current is selecte d b y th e inp ut serial data.
  • Page 56 U7-PIC24FJ64GA006 SOSCO/T1CK/CN0/RC14 PMD5/RE5 SOSCI/CN1/RC13 PMD6/RE6 OC1/RD0 PMD7/RE7 IC4/PMCS1/INT4/RD11 PMA5/SCK2/CN8/RG6 IC3/PMCS2/INT3/RD10 PMA4/SDI2/CN9/RG7 IC2/U1CTS/INT2/RD9 PMA3/SDO2/CN10/RG8 IC1/RTCC/INT1/RD8 MCLR PIC24FJXXGA006 PMA2/SS2/CN11/RG9 PIC24FJXXXGA006 OSC2/CLKO/RC15 OSC1/CLKI/RC12 C1IN+/AN5/CN7/RB5 C1IN-/AN4/CN6/RB4 SCL1/RG2 SDA1/RG3 C2IN+/AN3/CN5/RB3 U1RTS/BCLK1/SCK1/INT0/RF6 C2IN-/AN2/SS1/CN4/RB2 PGC1/EMUC1/V -/AN1/CN3/RB1 U1RX/SDI1/RF2 PGD1/EMUD1/PMA6/V +/AN0/CN2/RB0 U1TX/SDO1/RF3...
  • Page 57 U8-XC6204B502MR 041 - D SU RESET FLASH MEMORY ARRAY PAGE (256/264 BYTES BUFFER 1 (256/264 BYTES BUFFER 2 (256/264 BYTES I O INTERFACE RESET...
  • Page 58 U10, U12-XC6204B332MR U11-NJM2070 BIAS +INPUT +INPUT -INPUT OUTPUT -INPUT OUTPUT 100K...
  • Page 59 U101- NJM3403AM A OUTPUT D OUTPUT A -INPUT D -INPUT A +INPUT D +INPUT C +INPUT B +INPUT B -INPUT C -INPUT B OUTPUT C OUTPUT OUTPUT -INPUT +INPUT DBVR...
  • Page 60 U401-HT1621-DICE...

  • Page 61: Transistor Lead Identification

    TRANSISTOR LEAD IDENTIFICATION MMBT3904 MMBT3906 1.Gate 1 2.Gate 2 1. Base 3.Drain 2. Emitter 4.Source 3. Collector 4901 8550 2SC4097R 2SC3356 1.Gate 1.Base 2.Drain 2.Emitter 3.Source 3.Collector 2SK210Y Drain Terminal No. Gate 1.Drain (output) Source 2.Source (GND) 3.Gate (input) KTC9014 Emitter Emitter Base...

  • Page 62: Voltage Chart

    VOLTAGE CHART U1 BA4116FV Rx(V) 4.78 4.20 3.45 4.81 4.38 4.39 0.64 0.60 RFIN Rx(V) 0.94 U2 NJM2904M Tx(V) 0.48 0.48 4.70 4.80 0.40 7.20 U3 XC61CN2702MR Tx(V) 5.00 5.00 5.00 5.00 Rx(V) U4 NJM324V 4.80 1.86 1.86 1.86 1.86 1.86 1.86 1.78...
  • Page 63 VOLTAGE CHART-CONTINUED U8 XC6204B502MR VOUT Rx(V) 7.20 7.20 4.99 U9 AT45DB041D Tx(V) 4.98 4.99 U10 XC6204B332MR 3.30 U11 NJM2070M 0.60 3.26 7.16 Rx(V) U12 XC6204B332MR 3.30 3.30 3.30 3.30 U101 NJM3403AM Char 4.00 2.50 12.00 0.50 4.00 0.00 4.00 2.50 Stan 2.50 12.00...
  • Page 64 VOLTAGE CHART-CONTINUED Q1 2SC4901YK Q2 2SC4901YK Q3 2SC3356 Q4 2SC4901YK Tx(V) 0.70 0.80 0.25 4.54 0.74 3.76 Rx(V) 0.71 Q5 2SC4901YK Q6 RD07MVS1 Q7 2SC4901YK Q9 MMBT3906LT1 2.30 6.80 4.00 4.10 0.00 Tx(V) Rx(V) 0.70 3.90 0.78 2.32 3.40 4.10 4.02 Q8 3SK318 Tx(V)
  • Page 65 VOLTAGE CHART-CONTINUED Q23 2SC4097R Q27 2SC4097R Moto(on) 4.50 3.20 6.80 Mate 0.65 Q26 MMBT3906LT1 Q28 MMBT3904 Q29 MMBT3904 Q30 MMBT3904 Tx(V) 3.48 4.10 4.10 2.20 3.30 5.00 Rx(V) 4.00 4.00 2.20 3.40 5.00 CHARGER Q101 MMBT3904LT1 Q107 2SB772 Q102 MMBT3904LT1 Q104 MMBT3904LT1 Charging 1.70 12.00...

  • Page 66: Schematic Diagram

    SCHEMATIC DIAGRAM (for Main Radio) RSSI C203 100P RX 5V HDF160F HDF160F C138 C183 2.2uH 3SK318 56nH 100nH 100nH 100nH C148 2SC4901 21.4MHz CDB450C24 21.4MHz R174 R214 2SC4901 C137 100K R159 C115 C146 100nH 100nH 2SK318 820P 100nH 100nH C218 R218 1SS356 B,W,Y...
  • Page 67 SCHEMATIC DIAGRAM (for Cradle Charger) R120 C111 R101 +2.5V 100P 4.7K D102 R121 1N4001 100K C102 C103 C104 R119 C101 47uF/25V U102 DC_JACK 4.7K 47uF/25V TL431A Input:12VDC Q106 +2.5V 3904 U101A NJM3403 R122 100K Q107 R115 C105 C106 D103 2SB772 R107 100P 100P...

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