HYT TC-320 Service Manual
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HYT TC-320 Service Manual

Hyt two-way radio service manual
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Summary of Contents for HYT TC-320

  • Page 2: Table Of Contents

    Packing ..........................62 TC-320 VF PCB View Top Layer ..................63 TC-320 VF PCB View Bottom Layer................64 TC-320 VG PCB View Top Layer ..................65 TC-320 VG PCB View Bottom Layer ................66 TC-320 Level Diagram ..................... 67 TC-320 Block Diagram..................... 68 TC-320 Schematic Diagram(RF) ..................
  • Page 3 TC-320 Service Manual TC-320 (U1) VG Schematic Diagram(PLL) ..............72 TC-320 (U2) VF Schematic Diagram(PLL)..............73 TC-320 (U2) VG Schematic Diagram(PLL) ..............74 Specifications........................75...

  • Page 4: Introduction

    Safety Information ◇ This radio shall be serviced by qualified technicians only. ◇ Only use HYT supplied or approved batteries and chargers. ◇ To avoid electromagnetic interference and/or compatibility conflicts, turn off your radio in any area where posted notices instruct you to do so. Turn off your radio before boarding an aircraft. Any use of the radio must be in accordance with airline regulations or crew instructions.

  • Page 5: Radio Overview

    TC-320 Service Manual Radio Overview (4)Volume Control Keys (1) PTT (Push-to-Talk) Key (2) SK (Programmable key) (3) Speaker [+] / [-] (5) Microphone (6) Nameplate (7) Charging Terminal (8) Antenna (9) Power On/Off Key (10) Channel/Status Indicator (11)Channel Selector Knob...
  • Page 6 TC-320 Service Manual Note: Short Press means key press no longer than 1 second, and Long Press means key press longer than 1 second. Channel/Status Indicator Status indications and alert tones are shown in the table below: Operations/Functions LED Indications and Alert Tones Hold down both SK and Power On/Off Key, and then the source radio is turned on with red LED flashing once.

  • Page 7: Software Specifications

    TC-320 Service Manual Green LED glows when writing data. A low-pitched tone is heard when the radio is switched to low power. Adjust Power Level A high-pitched tone is heard when the radio is switched to high power. One beep is heard when the VOX feature is activated.
  • Page 8 Version). The operation procedures are as follows: Install PC programming software and its driver dedicated for TC-320 before your initial use. Connect the USB port of PC with the Mini USB jack of the radio using a programming cable. Turn on the radio.
  • Page 9 TC-320 Service Manual by user’ s misoperations. ) Keep this option unchecked after values are well adjusted from factory, to avoid any unexpected change of values. The adjustment values can be reset and changed in Factory Mode only. Description of adjustment:...

  • Page 10: Circuit Description

    TC-320 Service Manual Circuit Description General Diagram Tx Section: Audio signal from MIC is sent to the RF chip (U501) directly. In U501, the signal is amplitude limited and amplified, and then sent to the MCU chip (U601). The baseband signal processing circuit in U601 will convert the...
  • Page 11 TC-320 Service Manual Signaling Encode: Signaling encode signal output from the port MCU QT_OUT is divided into two flows. One flow goes through RC network to modulate the PLL reference frequency oscillator; the other goes through QT-MOD to modulate the VCO.
  • Page 12 TC-320 Service Manual PRE AMP RF AMP RF AMP W402 ANTENNA TX OUT Q401 Q402 Q403 R419 R420 R421 V_BAT U401 Q405 Q404 The modulated carrier signal output from VCO is pre-amplified by U501, and then goes to the front-stage amplifier Q401, driver-stage amplifier Q402 and final-stage amplifier Q403 respectively.
  • Page 13 2.2.1 MCU Control Circuit MCU control circuit is composed of MCU, EEPROM, LCD (exclusive for TC-320), keys, etc. This section has the following functions: to initialize data of the radio and save data to EEPROM; to drive LCD to display some user set information and status;...

  • Page 14: Cpu Pins

    TC-320 Service Manual 2.2.3 Audio Power Amplifier The audio signal output from U601 is amplified by the audio power amplifier (U301) to drive the speaker directly. 2.3 Power Supply Processing Block diagram of power supply circuit is shown as below:...
  • Page 15 TC-320 Service Manual Vddd VCC(3.0V) Power supply for digital circuit P50/INT0 VOL+ To increase the volume P51/INT1 VOL- To decrease the volume P52/INT2 Reserve Reserved P53/INT3 /POWER Radio On/Off ON/OFF P54/INT4 Programmable function key (side key) (valid for low level),...
  • Page 16 TC-320 Service Manual None None P03/COM3 Reserve Reserved P02/COM2 Reserve Reserved P01/COM1 Reserve Reserved P00/COM0 Reserve Reserved P10/SEG0 Reserve Reserved P11/SEG1 Reserve Reserved P12/SEG2 Reserve Reserved P13/SEG3 Reserve Reserved P14/SEG4 Reserve Reserved P15/SEG5 Reserve Reserved P16/SEG6 Reserve Reserved P17/SEG7 Reserve...
  • Page 17 TC-320 Service Manual P36/SEG22 Reserve Reserved P37/SEG23 Reserve Reserved P40/SEG24 Reserve Reserved P41/SEG25 EEPROM CLOCK, external pull-up resistor connected P42/SEG26 EEPROM DATA, external pull-up resistor connected P43/SEG27 To detect PLL circuit unlock (H: lock; L: unlock), external pull-up resistor connected...

  • Page 18: Tc-320 Parts List 1

    TC-320 Service Manual TC-320 Parts List 1 TC-320U(1) VG Parts List 1 (400-420MHz） Part No. Description Qty. Ref No. Print No. 1 3001050000000 Chip resistor 0402 0Ω J 1/16W (RoHS) R222 2 3001050000000 Chip resistor 0402 0Ω J 1/16W (RoHS) R518 3 3001050000000 Chip resistor 0402 0Ω...
  • Page 19 TC-320 Service Manual 51 3001052220000 Chip resistor 0402 2.2KΩ J 1/16W (RoHS) R110 52 3001052230010 Chip resistor 0402 22KΩ J 1/16W (RoHS) R215 53 3001052230010 Chip resistor 0402 22KΩ J 1/16W (RoHS) R312 54 3001052240010 Chip resistor 0402 220KΩ F 1/16W (RoHS) R602 55 3001052240010 Chip resistor 0402 220KΩ...
  • Page 20 TC-320 Service Manual 105 3001054740000 Chip resistor 0402 470KΩ J 1/16W(RoHS) R212 106 3001054740000 Chip resistor 0402 470KΩ J 1/16W(RoHS) R517 107 3001055620000 Chip resistor 0402 5.6KΩ J 1/16W(RoHS) R211 108 3001055630000 Chip resistor 0402 56KΩ J 1/16W(RoHS) R632 109 3001056820000 Chip resistor 0402 6.8KΩ J 1/16W(RoHS) R208 110 3001056820000 Chip resistor 0402 6.8KΩ...
  • Page 21 TC-320 Service Manual 160 3101051000020 Chip capacitor 0402 10PF J 50V(RoHS) C103 161 3101051000020 Chip capacitor 0402 10PF J 50V(RoHS) C104 162 3101051000020 Chip capacitor 0402 10PF J 50V(RoHS) C107 163 3101051000020 Chip capacitor 0402 10PF J 50V(RoHS) C211 164 3101051000020 Chip capacitor 0402 10PF J 50V(RoHS)
  • Page 22 TC-320 Service Manual 214 3101054710010 Chip capacitor 0402 470PF K 50V(RoHS) C524 215 3101054710010 Chip capacitor 0402 470PF K 50V(RoHS) C601 216 3101054710010 Chip capacitor 0402 470PF K 50V(RoHS) C611 217 3101054710010 Chip capacitor 0402 470PF K 50V(RoHS) C622 218 3101054710010 Chip capacitor 0402 470PF K 50V(RoHS)
  • Page 23 TC-320 Service Manual 268 3101051030020 Chip capacitor 0402 0.01UF K 25V(RoHS) C612 269 3101051030020 Chip capacitor 0402 0.01UF K 25V(RoHS) C635 270 3101051030020 Chip capacitor 0402 0.01UF K 25V(RoHS) C637 271 3101051030020 Chip capacitor 0402 0.01UF K 25V(RoHS) C645 272 3101051030020 Chip capacitor 0402 0.01UF K 25V(RoHS) C646 273 3101052230000 Chip capacitor 0402 0.022UF K 16V(RoHS)
  • Page 24 TC-320 Service Manual 322 3104071050070 Tantalum capacitor 0805 1UF M 16V (RoHS) C420 323 3104074750070 Tantalum capacitor 0805 4.7UF M 10V (RoHS) C128 324 3104074750070 Tantalum capacitor 0805 4.7UF M 10V (RoHS) C140 325 3104074750070 Tantalum capacitor 0805 4.7UF M 10V (RoHS) C201 326 3104074750070 Tantalum capacitor 0805 4.7UF M 10V (RoHS)
  • Page 25 TC-320 Service Manual 376 3210108270000 Bobbin inductor 1206 27nH LQW31HN27NJ03L(RoHS) L104 377 3210209102010 Bobbin inductor 1210 1uH LQH32M(RoHS) L415 378 3231351630000 Air-core inductor E2-0.35*1.6*3TR (RoHS) L501 379 3231351640000 Air-core inductor E2-0.35*1.6*4TL(RoHS) L412 380 3231351640000 Air-core inductor E2-0.35*1.6*4TL(RoHS) L413 381 3231351640000 Air-core inductor E2-0.35*1.6*4TL(RoHS) L414 382 3231351650000 Air-core inductor E2-0.35*1.6*5TL(RoHS)
  • Page 26 TC-320 Service Manual 430 3602999000000 Audio amplification IC AP4890 BTL 1W(RoHS) U301 431 3605008005070 Operational Amplifier NJM2904V dual-operation J(RoHS) U401 432 41003201001B0 TC-320 RF PCB (RoHS) U501 433 3610999000060 SCM SRT3210 100Pin H(RoHS) U601 434 3609049000010 IC LDO regulator RT9011PP 3.(RoHS)

  • Page 27: Tc-320 (400-420Mhz) Parts Change Record

    TC-320 Service Manual TC-320 (400-420MHZ) Parts Change Record TC-320 (400-420MHz) Parts Change Record Before Change (TC-320 VF) After Change (TC-320 VG) Print Print Part No. Description Ref No. Qty. Part No. Description Qty. Chip capacitor 0402 1000PF K Chip capacitor GRM1555C1H270J...
  • Page 28 TC-320 Service Manual Chip capacitor 0402 470PF K 13 3101054710010 C525 None None C525 50V(RoHS) Chip capacitor 0402 1PF B 50V 14 None None C527 3101050100010 C527 Hi-Q(RoHS) Chip capacitor 0402 0.1UF K 15 None None C536 3101051040060 C536 16(RoHS) Chip resister 0402 82Ω...
  • Page 29 TC-320 Service Manual TC-320 main PCB FR4 1.2T/4L/4P F 27 41003203000F0 41003203000G0 PCB board FR4 4L 4P (RoHS) (RoHS) 28 41003001001A0 TC-310/320 RF PCB(RoHS) 41003201001B0 )TC-320 RF PCB (RoHS) Chip capacitor 0402 470PF K 29 3101054710010 C543 None None C543 50V(RoHS) 30 3401002000790 Transistor 2SC5065-O(TE85L.F)(RoHS)
  • Page 30 TC-320 Service Manual Multi-layer chip inductor 0402 10nH 43 3001050000000 Chip resister 0402 0Ω J 1/16W (RoHS) L514 3210305100010 L514 LQG15(RoHS) Chip capacitor 0402 3PF B 44 3101050600010 Chip capacitor 0402 6PF B 50V(RoHS) C545 3101050300000 C545 50V(RoHS) Chip capacitor 0402 0.5PF B 50V Chip capacitor 0402 0.3PF B 50V...
  • Page 31 TC-320 Service Manual TC-320U(2) VG Parts List 1 (450-470MHz) Part No. Description Qty. Ref No. Print No. 1 3001050000000 Chip resistor 0402 0Ω J 1/16W (RoHS) R222 2 3001050000000 Chip resistor 0402 0Ω J 1/16W (RoHS) R223 3 3001050000000 Chip resistor 0402 0Ω J 1/16W (RoHS) R518 4 3001050000000 Chip resistor 0402 0Ω...
  • Page 32 TC-320 Service Manual 53 3001052230010 Chip resistor 0402 22KΩ J 1/16W(RoHS) R215 54 3001052230010 Chip resistor 0402 22KΩ J 1/16W(RoHS) R312 55 3001052240010 Chip resistor 0402 220KΩ F 1/16W (RoHS) R602 56 3001052240010 Chip resistor 0402 220KΩ F 1/16W (RoHS) R603 57 3001052710010 Chip resistor 0402 270Ω...
  • Page 33 TC-320 Service Manual 107 3001055620000 Chip resistor 0402 5.6KΩ J 1/16W(RoHS) R211 108 3001056820000 Chip resistor 0402 6.8KΩ J 1/16W(RoHS) R208 109 3001056820000 Chip resistor 0402 6.8KΩ J 1/16W(RoHS) R529 110 3001056830000 Chip resistor 0402 68KΩ J 1/16W(RoHS) R102 111 3001056830000 Chip resistor 0402 68KΩ J 1/16W(RoHS) R124 112 3001056830000 Chip resistor 0402 68KΩ...
  • Page 34 TC-320 Service Manual 161 3101051000020 Chip capacitor 0402 10PF J 50V(RoHS) C103 162 3101051000020 Chip capacitor 0402 10PF J 50V(RoHS) C104 163 3101051000020 Chip capacitor 0402 10PF J 50V(RoHS) C107 164 3101051000020 Chip capacitor 0402 10PF J 50V(RoHS) C211 165 3101051200020 Chip capacitor 0402 12PF J 50V(RoHS)
  • Page 35 TC-320 Service Manual 215 3101054710010 Chip capacitor 0402 470PF K 50V(RoHS) C611 216 3101054710010 Chip capacitor 0402 470PF K 50V(RoHS) C622 217 3101054710010 Chip capacitor 0402 470PF K 50V(RoHS) C623 218 3101054710010 Chip capacitor 0402 470PF K 50V(RoHS) C624 219 3101054710010 Chip capacitor 0402 470PF K 50V(RoHS)
  • Page 36 TC-320 Service Manual 269 3101051030020 Chip capacitor 0402 0.01UF K 25V(RoHS) C612 270 3101051030020 Chip capacitor 0402 0.01UF K 25V(RoHS) C635 271 3101051030020 Chip capacitor 0402 0.01UF K 25V(RoHS) C637 272 3101051030020 Chip capacitor 0402 0.01UF K 25V(RoHS) C645 273 3101051030020 Chip capacitor 0402 0.01UF K 25V(RoHS) C646 274 3101052230000 Chip capacitor 0402 0.022UF K 16V(RoHS)
  • Page 37 TC-320 Service Manual 323 3104071050070 Tantalum capacitor 0805 1UF M 16V (RoHS) C420 324 3104074750070 Tantalum capacitor 0805 4.7UF M 10V(RoHS) C128 325 3104074750070 Tantalum capacitor 0805 4.7UF M 10V(RoHS) C140 326 3104074750070 Tantalum capacitor 0805 4.7UF M 10V(RoHS) C201 327 3104074750070 Tantalum capacitor 0805 4.7UF M 10V(RoHS)
  • Page 38 TC-320 Service Manual 377 3231301250000 Air-core inductor E2-0.30*1.2*5TL(RoHS) L406 378 3210108230010 Bobbin inductor 1206 23nH LQW31(RoHS) L104 379 3210209102010 Bobbin inductor 1210 1uH LQH32M(RoHS) L415 380 3231351630000 Air-core inductor E2-0.35*1.6*3TR (RoHS) L501 381 3231351640000 Air-core inductor E2-0.35*1.6*4TL(RoHS) L412 382 3231351640000 Air-core inductor E2-0.35*1.6*4TL(RoHS) L413 383 3231351640000 Air-core inductor E2-0.35*1.6*4TL(RoHS)
  • Page 39 TC-320 Service Manual 431 5205006000010 Accessory jack LGK1503(RoHS) J202 432 3602999000000 Audio amplification IC AP4890 BTL 1W(RoHS) U301 433 3605008005070 Operational Amplifier, dual-operation J(RoHS) U401 434 41003201001B0 RF PCB (RoHS)(RoHS) U501 435 3610999000060 SCM SRT3210 100Pin H(RoHS) U601 436 3609049000010 IC LDO regulator RT9011PP 3.(RoHS)

  • Page 40: Tc-320 (450-470Mhz) Parts Change Record

    TC-320 Service Manual TC-320 (450-470MHZ) Parts Change Record TC-320 (450-470MHz) Parts Change Record Before Change (TC-320 VF) After Change (TC-320 VG) Print Print Part No. Description Ref No. Qty. Part No. Description Ref No. Qty. Chip capacitor 0402 1000PF K...
  • Page 41 TC-320 Service Manual Multi-layer chip inductor 39nH None None L516 3210305390000 L516 LQG15HS39NJ02（RoHS） Chip capacitor 0402 470PF K 3101054710010 C525 None None C525 50V(RoHS) Chip capacitor 0402 1PF B None None C527 3101050100030 C527 50V(RoHS) Chip capacitor 0402 0.1UF K...
  • Page 42 TC-320 Service Manual TC-320 main PCB FR4 PCB board TC-320 FR4 4L 41003203000F0 41003203000G0 1.2T/4L/4P F (RoHS) (RoHS) 41003001001A0 TC-310/320 RF PCB(RoHS) 41003201001B0 TC-320 RF PCB (RoHS) U501 Chip capacitor 0402 470PF K 3101054710010 C543 None None C543 50V(RoHS) Transistor...
  • Page 43 TC-320 Service Manual Chip resister 0402 10Ω F Chip resister 0402 82Ω F 3001051000020 R526 3001058200000 R526 1/16W (RoHS) 1/16W(RoHS) Tantalum capacitor 0805 1UF M Tantalum capacitor 4.7UF M 3104071050070 C132 3104074750070 C132 16V (RoHS) 10V P(RoHS) Multi-layer chip inductor 0402...

  • Page 44: Adjustment Description

    TC-320 Service Manual Adjustment Description Parts Overview (4) Volume Control Keys (1)PTT (Push-to-Talk) Key (2) SK (programmable key) (3) Speaker [+] / [-] (5) Microphone (6) Nameplate (7) Charging Terminal (8) Antenna (9) Power On/Off Key (10) Channel/Status Indicator (11)Channel Selector Knob...

  • Page 45: Wired Clone

    TC-320 Service Manual Required Test Instruments: Radio communication test set 1 set 10V/3A regulated DC power supply 1 set Digital voltmeter 1 set Ammeter 1 set Preparations: Place the board to be tested on the test fixture (please ensure good connection between each test point and the fixture), and connect the board to a power supply with DC voltage of 3.8V.
  • Page 46 TC-320 Service Manual 2. Description of Adjustment Items: (1) Wide/Narrow Bandwidth Switch and Frequency Switch in an Adjustment Item: In an adjustment item, short press SK to switch between wide and narrow bandwidth. The default adjustment point is the 1st frequency (low frequency) of current bandwidth. After selecting a bandwidth, short press (no longer than 1s) PTT to switch among different frequencies.
  • Page 47 TC-320 Service Manual Test Adjustment Specifications / Item Condition Test Instrument Test point Part Method Remarks Rotate the Channel Selector Adjust VR101 with ceramic tuning tool to Tx Frequency Communication Test Set Antenna VR101 control the center frequency within the ≤150Hz...
  • Page 48 TC-320 Service Manual (2) Adjustment in the Adjustment Mode (Note: Make sure the antenna or load is connected before adjustment; rotate the Channel Selector knob to save the adjusted values automatically). Test Adjustment Specifications / Item Condition Test Instrument Test point...
  • Page 49 TC-320 Service Manual Short press SK key to enter the Press [+] or [-] key to “ narrow bandwidth”and select low make adjustments Narrow frequency. until the CDCSS 300-500Hz Bandwidth Press PTT key to switch between deviation meets the different frequencies (low, medium requirements.
  • Page 50 TC-320 Service Manual Wide Communication Test Set Rotate the Channel Selector Knob to 3.0KHz Bandwidth CH9; Modulation BPF: <20Hz~15kHz Check Short press SK key to switch to Sensitivity AF:1kHz Narrow 1.5KHz “ narrow band” . Bandwidth 3± 3mV Adjust output voltage of the...
  • Page 51 TC-320 Service Manual (3) Rx Circuit Adjustment Specifications / Items Condition Test Instrument Part Method Remarks Rotate the Channel Selector Knob to CH10 and Adjust the output SQL level 5 ON is set. signals of SSG to the Communication Test Set Press [+] or [-] key to squelch level.
  • Page 52 TC-320 Service Manual Short press SK to enter Communication test set “ narrow band” ; press [+] or Narrow Squelch level (Level 5) [-] key to sample the Same as above Bandwidth -121dB SSG:-120dBm MOD:1KHz current value; press PTT to DEV:1.5KHz...

  • Page 53: Troubleshooting Flow Chart

    TC-320 Service Manual Troubleshooting Flow Chart Transmit Circuit Start Low Tx LED fails to Replace No sound power Transmission glow/flash. D602. Normal Tx Check the Tx power supply? power supply. Check the voice channel (Output ports of MIC U501, LED of D604...
  • Page 54 TC-320 Service Manual Receive Circuit...
  • Page 55 TC-320 Service Manual Start Normal power-on alert? The speaker Replace the works normally? speaker . Normal VCC (operating voltage of Check U602. MCU)? Clock crystal (X601) of MCU works Replace X601. normally? Check battery detect pin 40, Other pins control...

  • Page 56: Disassembly And Assembly For Repair

    TC-320 Service Manual Disassembly and Assembly Disassembly 1． Power off the radio; 2． Remove the belt clip. 3． Remove the battery a． Push the battery latch upwards; b． Remove the rear cover; c． Take out the batter by lifting its bottom side.
  • Page 57 TC-320 Service Manual 5． Remove the Channel Selector Knob, nut and waterproof ring a． Deattach the Channel Selector Knob Cover; b． Unfasten the screw; c． Remove Channel Selector Knob; d． Remove the nut and waterproof ring. 6． Disassemble chassis of the radio a．...
  • Page 58 TC-320 Service Manual Assembly 1． Install the main PCB a． Make sure that the speaker is well connected, and the charging piece on the bottom is correctly installed; b． Install the supporting ring of the Channel Selector Knob; c． Attach the main PCB;...
  • Page 59 TC-320 Service Manual 4． Assemble the antenna 5． Attach the battery a． Insert the battery b． Attach the rear cover. 6． Attach the belt clip...

  • Page 60: Exploded View

    TC-320 Service Manual Exploded View 30 31...

  • Page 61: Tc-320 Parts List 2

    TC-320 Service Manual TC-320 Parts List 2 Part No. Items Qty. (PCS) 6201658001010 Encoder knob cover (RoHS) 7102006000000 Machine Screw M2.0*6.0mm 6000718100000 Encoder knob (RoHS) 7206007400000 Fixing nut of Encoder switch (RoHS) 6100335000000 O_RING for antenna (RoHS) 6000737000010 Light guide (charge LED) (RoHS)
  • Page 62 TC-320 Service Manual 5002230000010 MIC (RoHS) 6100111000010 Silica rubber mic bushing (RoHS) 7400077000000 Mic net (RoHS) 6000732001000 Front case (RoHS) 6300062001010 Decorative sheet (zink alloy) (RoHS) 6100365000000 PTT key (silica rubber ) (RoHS) 6000735000010 PPT key (RoHS) Antenna (RoHS) Note: Parts that are not marked with material number may vary with radio frequency band.

  • Page 63: Packing

    TC-320 Service Manual Packing Diagram...

  • Page 69: Tc-320 Block Diagram

    TC-320 Block Diagram TC-320方框图 D603/D604 D603/D604 CHARG B302 B302 J202 D601 D601 CHARG B303 B303 R_LED Speaker Speaker U604 U301 D602 D602 SW606 SW606 W402 W402 T_LED PRE AMP RF AMP RF AMP ANTENNA ANTENNA SW601 SW601 CLD_OUTP Q401 Q402...

  • Page 70: Tc-320 Schematic Diagram(Rf)

    TC-320 Schematic Diagram (RF) TC-320U(1) 原理图(RF) L405 L405 D401 D401 C404 C404 L408 L408 C416 C416 W401 W401 C425 C425 C427 C427 C431 C431 C433 C433 R414 R414 C435 C435 C429 C429 4.7nH 4.7nH 470p 470p 1SS356 1SS356 1000p 1000p 4.7nH...

  • Page 71: Tc-320 Schematic Diagram(Cpu)

    TC-320 Schematic Diagram (CPU) 原理图(CPU) TC-320U(1) C316 C316 R314 R314 C301 C301 0.33u 0.33u 0.33u 0.33u U606 U606 V_BAT MC34673 MC34673 C606 C606 C651 C651 C311 C311 4.7u/10V 4.7u/10V 1000p 1000p 0.1u 0.1u ISET R315 R315 R302 R302 C643 C643...

  • Page 72: Tc-320 (U1) Vf Schematic Diagram(Pll)

    1000p R103 R103 C132 C132 C310 C310 1u/6.3V 1u/6.3V 4700P 4700P R313 R313 QT_OUT HYT Science&technology Co.Ltd. HYT Science&technology Co.Ltd. HYT Science&technology Co.Ltd. Model Name: Model Name: Model Name: TC-300 TC-300 TC-300 Page: Page: Page: Part Name: Part Name: Part Name:...

  • Page 73: Tc-320 (U1) Vg Schematic Diagram(Pll)

    C126 R312 R312 C315 C315 3.3k 3.3k 1000p 1000p 0.1u 0.1u R103 R103 C132 C132 HYT Science&technology Co.Ltd. HYT Science&technology Co.Ltd. HYT Science&technology Co.Ltd. 4.7/10V 4.7/10V Model Name: Model Name: Model Name: QT_OUT TC-320 TC-320 TC-320 Page: Page: Page: C310...

  • Page 74: Tc-320 (U2) Vf Schematic Diagram(Pll)

    1000p R103 R103 C132 C132 C310 C310 1u/6.3V 1u/6.3V 4700P 4700P R313 R313 QT_OUT HYT Science&technology Co.Ltd. HYT Science&technology Co.Ltd. HYT Science&technology Co.Ltd. Model Name: Model Name: Model Name: TC-320 TC-320 TC-320 Page: Page: Page: Part Name: Part Name: Part Name:...

  • Page 75: Tc-320 (U2) Vg Schematic Diagram(Pll)

    C126 R312 R312 C315 C315 3.3k 3.3k 1000p 1000p 0.1u 0.1u R103 R103 C132 C132 HYT Science&technology Co.Ltd. HYT Science&technology Co.Ltd. HYT Science&technology Co.Ltd. 4.7/10V 4.7/10V Model Name: Model Name: Model Name: QT_OUT TC-320 TC-320 TC-320 Page: Page: Page: C310...

  • Page 76: Specifications

    TC-320 Service Manual Specifications General Specifications Frequency Range 400-420MHz, 450-470MHz Channel Capacity Channel Spacing 25 KHz /12.5KHz Operating Voltage 3.8V DC Battery 1100mAh Li-Ion battery Battery Life (5-5-90 duty cycle) About 8 hours Operating Temperature -20 ~+55 ℃ ℃ Dimensions (H× W×D) 100mm×48mm×27mm...
  • Page 77 HYT endeavors to achieve the accuracy and completeness of this manual, but no warranty of accuracy or reliability is given. All the specifications and designs are subject to change without notice due to continuous technology development. Changes which may occur after publication are highlighted by Revision History contained in Service Manual.

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