HYT TC-700 EX PLUS Service Manual
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HYT TC-700 EX PLUS Service Manual

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Contents
General． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． 1
Radio Overview． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． 4
Software Specifications． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． 8
Circuit Description． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． 15
TC-700 EX PLUS VHF Parts List 1 ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． 25
Adjustment Description． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． 61
Troubleshooting Flow Chart． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． 69
Disassembly and Assembly for Repair． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． 73
Exploded View． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． 76
Packing． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． 79
Parts List (FM-approved Battery)． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ．81
TC-700 EX PLUS VHF PCB View． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ．
TC-700 EX PLUS UHF PCB View． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ．
TC-700 EX PLUS Level Diagram． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ．
TC-700 EX PLUS Block Diagram． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ．
TC-700 EX PLUS VHF Schematic Diagram (CPU Unit)． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ．
TC-700 EX PLUS UHF Schematic Diagram (CPU Unit)． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ．
Specifications． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ．

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Summary of Contents for HYT TC-700 EX PLUS

  • Page 1: Table Of Contents

    TC-700 EX PLUS UHF Parts List 1 ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ．...

  • Page 2: General

    The battery must only be changed in a non-hazardous area. Additional or spare batteries must not be carried into a hazardous area. Use only the Ex-battery BL1703-Ex （ FM） specified by HYT. The use of other batteries is strictly prohibited and will result in termination of Ex-protection.
  • Page 3 TC-700 EX PLUS Service Manual For vehicles with an air bag, do not place a radio in the area over an air bag or in the air bag deployment area. Do not use any portable radio that has a damaged antenna. If a damaged antenna comes into contact with your skin, a minor burn can result.

  • Page 4: Fm-Approved Intrinsically Safe Radio Information． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ．3

    TC-700 EX PLUS Service Manual FM-Approved Intrinsically Safe Radio Information FM-Approved Intrinsically Safe Radio Certification FM-approved Intrinsically Safe TC-700EX PLUS a Portable Radios I.S. Class I, II, III, Division 1, Groups CDEFG, T3C a=Radio Band Model Frequency Band V: 136-174MHz...

  • Page 5: Radio Overview

    TC-700 EX PLUS Service Manual Radio Overview PTT (Push-to-Talk) Key Press and hold down the PTT key to transmit; release it to receive. SK1 (Side Key 1) (programmable) SK2 (Side Key 2) (programmable) Antenna Microphone Speaker TK (Top Key) (programmable) Channel Selector Knob Rotate the knob to select from channel 1 to 16.
  • Page 6 TC-700 EX PLUS Service Manual 13. Belt Clip 14. Accessory Cover 15. Battery 16. Screw 17. Electrode Piece Wired Cloning Source radio: Turn the source radio on while The orange LED flashes holding down the PTT and SK2. twice. Target radio: Rotate the On-Off/Volume Control knob clockwise to turn the target radio on.
  • Page 7 TC-700 EX PLUS Service Manual Target radio LED solidly glows green when cloning is in progress; LED flashes green and radio sounds beep tone, when cloning is completed; LED flashes red when cloning fails. Power On The green LED flashes once.
  • Page 8 TC-700 EX PLUS Service Manual Function Key Press One beep to enable, two beeps to disable.

  • Page 9: Software Specifications

    TC-700 EX PLUS Service Manual Software Specifications Specifications Conventional Mode 1. Channel Selector Knob (16 channels) VHF: 136-174 MHz UHF: 420-470 MHz, 400-450MHz, 440-490MHz, 470-520MHz, 300-350MHz, 300-350MHz, 400-470MHz, 450-520MHz 2. Channel Spacing: 25/20/12.5KHz (programmable) 3. Step: 2.5/5/6.25KHz 4. LED Indicator: Red/Green/Orange 5.
  • Page 10 TC-700 EX PLUS Service Manual Description User Mode This mode is for normal operation. All Reset Mode First ground the SELF point, and then turn the radio on while holding down the TK key for 2 seconds. The radio enters all reset mode with green LED flashing twice. Turn the Channel Selector knob to the desired channel and press PTT.
  • Page 11 TC-700 EX PLUS Service Manual Rx Frequency Tx Frequency Channel Channel Signalling Power (MHZ) (MHZ) Spacing None 25KHZ None 25KHZ None 25KHZ None 20KHZ None 20KHZ None 20KHZ None 12.5KHZ None 12.5KHZ None 12.5KHZ 67HZ 25KHZ 254.1HZ 25KHZ 25KHZ 25KHZ...
  • Page 12 TC-700 EX PLUS Service Manual Wireless Cloning Mode Select Wireless Cloning from optional functions in programming software, and turn the radio on while holding down PTT and SK1 keys simultaneously for 2 seconds. Then the source and target radios enter Wireless Cloning Mode with orange LED flashing once (when both radios are turned on and stay on the same channel), hold down PTT on the source radio to begin cloning.
  • Page 13 TC-700 EX PLUS Service Manual The frequency toggles at a low to high cycle. Green LED flashes once when adjusting F1. (4) TK Key Used to toggle the channel spacing among 25 KHz, 20 KHz and 12.5 KHz. Red LED flashes once when the 25 KHz spacing is selected.
  • Page 14 TC-700 EX PLUS Service Manual First Group of Adjusting Items Channel No. Adjusting Item Remarks 25KHz 20KHz 12.5KHz Tx power LOW 5 point tuning CDCSS PLL balance 3 point tuning (wide) 1 point tuning CDCSS deviation 3 point tuning (wide)
  • Page 15 TC-700 EX PLUS Service Manual Second Group of Adjusting Items Channel No. Adjusting Remarks Item 25KHz 20KHz 12.5KHz RX sensitivity 5 point tuning 1 point tuning AK2346 volume (RX) 1 point tuning (wide) 1 point tuning (narrow) 3 point tuning...

  • Page 16: Circuit Description

    TC-700 EX PLUS Service Manual Circuit Description 1. Power Supply The radio is supplied by the battery. The power supply is from B+, and supplies power SWB+ for the three AVRs, after passing through fuse FE250mA and switch. IC504 supplies 5V (M5V) voltage for the control circuit.
  • Page 17 TC-700 EX PLUS Service Manual To Drive Amp BUFF D101 Q111 BUFF Q301 D201 1st Local OSC To Mixer VCXO X301 CLK,DAT,STB Fig.2 PLL Block Diagram 1) PLL Circuit Step frequency of PLL can be 2.5 KHz, 5.0 KHz or 6.25 KHz. A 16.8MHz reference oscillator signal is divided at IC301 by a counter to generate a 2.5 KHz, 5.0 KHz or 6.25 KHz reference frequency.
  • Page 18 TC-700 EX PLUS Service Manual CF201,202 AF AMP RF AMP IF AMP IF AMP IC408 IC401 Q207 Q206 XF203 Q204 Audio IF,MIX,DET ANTSW Processor IC204 2nd Local OSC 1st Local OSC VCXO 16.8MHz multiply (PLL) Fig. 3 Receiver Section Configuration...
  • Page 19 TC-700 EX PLUS Service Manual 4. Transmitter 1) Audio and Signalling Audio signal from the microphone is amplified and low-pass-filtered in IC402 before it enters baseband processing chip IC408, which also enters CTCSS/CDCSS/DTMF/2-Tone (5-Tone) signalling generated by CPU. The IC408 processed mixing signal enters VCO for direct FM modulation (see fig.5).
  • Page 20 TC-700 EX PLUS Service Manual from final current. APC voltage is in proportion to the difference between auto detect voltage and reference voltage output from IC101 (1/2). The output voltage controls FET power. 5. Baseband and Signalling System The block diagram of signalling section is shown as figure 5.
  • Page 21 TC-700 EX PLUS Service Manual for modulation. MSK input of demodulating IC is sent to AK2346 for demodulation after being Receive: amplified. The demodulated signal is then sent to MCU for decoding. 4) AF Audio signal from MIC enters baseband processed IC for amplification, Transmit: pre-emphasis etc.

  • Page 22: Cpu Pins． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ．21

    TC-700 EX PLUS Service Manual transmit/receive according to the signal input from PTT; turn on/off the mute circuit according to the input signalling decode signal and squelch level signal; output control signal to control the light/off of LED; control signalling process IC to perform tasks.
  • Page 23 TC-700 EX PLUS Service Manual P76/TA3O CTCOUT CTC _OUT (PWM) TO VCO P74/TA2O CTC_PLL CTC_PLL (PWM) COM5 Indication for receive/transmit status P72/TA1O 1/2OSC P71/RxD2/TB5IN TONEI P70/TxD2 P67/TxD1 Serial date output. P66/RxD1 Serial date input. P63/TxD0 COM4 P62/RxD0 COM3...
  • Page 24 TC-700 EX PLUS Service Manual COM1 COM2 P57/RDY EEDAT EEPROM DATA, date input/output. P56/ALE EECLK EEPROM CLK P55/HOLD P54/HLDA AFDIR AK2346 DIR P53/BLCK AFSCK 2346 SCLK P52/RD P51/BHE AFDT 2346 TDATA P50/WR P47/CS3 CODIO Common date control (AK2346 DATA). P46/CS2...
  • Page 25 TC-700 EX PLUS Service Manual P15/INT3 ALARM DC-Switch PLL_UL PLL unlock detect PLL_STB PLL strobe output MICMUTE MICMUTE P07/D7 Option1 Programming cable detect. P06/D6 PLL_DATA PLL date input P05/D5 PLL_CLK PLL clock output P04/D4 Receive/transmit control P03/D3 APC-Switch P02/D2 P01/D1...

  • Page 26: Tc-700 Ex Plus Vhf Parts List 1

    TC-700 EX PLUS Service Manual TC-700 EX PLUS VHF Parts List 1 Material No. Description Qty. Ref. No. Print No. 1 3001050000000 Chip resistor 0402 0Ω J 1/16W 1 R147 2 3001050000000 Chip resistor 0402 0Ω J 1/16W 1 R254 3 3001050000000 Chip resistor 0402 0Ω...
  • Page 27 TC-700 EX PLUS Service Manual Material No. Description Qty. Ref. No. Print No. 43 3001051020010 Chip resistor 0402 1KΩ J 1/16W 1 R405 44 3001051020010 Chip resistor 0402 1KΩ J 1/16W 1 R466 45 3001051020010 Chip resistor 0402 1KΩ J 1/16W 1 R468 46 3001051020010 Chip resistor 0402 1KΩ...
  • Page 28 TC-700 EX PLUS Service Manual Material No. Description Qty. Ref. No. Print No. 87 3001051040010 Chip resistor 0402 100KΩ J 1/16W 1 R240 88 3001051040010 Chip resistor 0402 100KΩ J 1/16W 1 R241 89 3001051040010 Chip resistor 0402 100KΩ J 1/16W 1 R242 90 3001051040010 Chip resistor 0402 100KΩ...
  • Page 29 TC-700 EX PLUS Service Manual Material No. Description Qty. Ref. No. Print No. 131 3001051840000 Chip resistor 0402 180KΩ J 1/16W 1 R447 132 3001051840000 Chip resistor 0402 180KΩ J 1/16W 1 R492 133 3001052040000 Chip resistor 0402 200KΩ J 1/16W 1 R521 134 3001052200000 Chip resistor 0402 22Ω...
  • Page 30 TC-700 EX PLUS Service Manual Material No. Description Qty. Ref. No. Print No. 175 3001053340000 Chip resistor 0402 330KΩ J 1/16W 1 R481 176 3001053910000 Chip resistor 0402 390Ω J 1/16W 1 R123 177 3001053910000 Chip resistor 0402 390Ω J 1/16W 1 R304 178 3001053910000 Chip resistor 0402 390Ω...
  • Page 31 TC-700 EX PLUS Service Manual Material No. Description Qty. Ref. No. Print No. 219 3001055110000 Chip resistor 0402 510Ω J 1/16W 1 R251 220 3001055130010 Chip resistor 0402 51KΩ J 1/16W 1 R479 221 3001055620000 Chip resistor 0402 5.6KΩ J 1/16W 1 R117 222 3001055620000 Chip resistor 0402 5.6KΩ...
  • Page 32 TC-700 EX PLUS Service Manual Material No. Description Qty. Ref. No. Print No. 263 3001061800000 Chip resistor 0603 18Ω J 1/10W 1 R109 264 3001063320000 Chip resistor 0603 3.3KΩ J 1/10W 1 R116 265 3001063320000 Chip resistor 0603 3.3KΩ J 1/10W 1 RE35 266 3001064700000 Chip resistor 0603 47Ω...
  • Page 33 TC-700 EX PLUS Service Manual Material No. Description Qty. Ref. No. Print No. 307 3101051000020 Chip capacitor 0402 10PF J 50V 1 C265 308 3101051000020 Chip capacitor 0402 10PF J 50V 1 C302 309 3101051000020 Chip capacitor 0402 10PF J 50V...
  • Page 34 TC-700 EX PLUS Service Manual Material No. Description Qty. Ref. No. Print No. 351 3101051020010 Chip capacitor 0402 1000PF K 50V 1 C346 352 3101051020010 Chip capacitor 0402 1000PF K 50V 1 C347 353 3101051020010 Chip capacitor 0402 1000PF K 50V...
  • Page 35 TC-700 EX PLUS Service Manual Material No. Description Qty. Ref. No. Print No. 395 3101051040060 Chip capacitor 0402 0.1UF K 16V 1 C206 396 3101051040060 Chip capacitor 0402 0.1UF K 16V 1 C208 397 3101051040060 Chip capacitor 0402 0.1UF K 16V 1 C213 398 3101051040060 Chip capacitor 0402 0.1UF K 16V...
  • Page 36 TC-700 EX PLUS Service Manual Material No. Description Qty. Ref. No. Print No. 439 3101051500020 Chip capacitor 0402 15PF J 50V 1 C100 440 3101051500020 Chip capacitor 0402 15PF J 50V 1 C102 441 3101051500020 Chip capacitor 0402 15PF J 50V...
  • Page 37 TC-700 EX PLUS Service Manual Material No. Description Qty. Ref. No. Print No. 483 3101054700010 Chip capacitor 0402 47PF J 50V 1 C420 484 3101054700010 Chip capacitor 0402 47PF J 50V 1 C444 485 3101054710010 Chip capacitor 0402 470PF K 50V...
  • Page 38 TC-700 EX PLUS Service Manual Material No. Description Qty. Ref. No. Print No. 527 3101060590010 Chip capacitor 0603 0.5PF B 50V 1 C312 528 3101060590010 Chip capacitor 0603 0.5PF B 50V 1 C325 529 3101060600010 Chip capacitor 0603 6PF B 50V...
  • Page 39 TC-700 EX PLUS Service Manual Material No. Description Qty. Ref. No. Print No. 571 3102992000040 Trimmer capacitor 3.2*2.5*1.25mm 10P 55V 1 TC301 572 3102992000040 Trimmer capacitor 3.2*2.5*1.25mm 10P 55V 1 TC302 573 3104071040010 Tantalum capacitor 0805 0.1UF M 20V 1 C326...
  • Page 40 TC-700 EX PLUS Service Manual Material No. Description Qty. Ref. No. Print No. 615 3210406331000 Multi-layer chip inductor 0603 330nH 1 L317 616 3210406331000 Multi-layer chip inductor 0603 330nH 1 L318 617 3210406331000 Multi-layer chip inductor 0603 330nH 1 L319...
  • Page 41 TC-700 EX PLUS Service Manual Material No. Description Qty. Ref. No. Print No. 659 3303020100060 Switching diode MA3J74200L 30V 30mA 1 D410 660 3303020100070 Switching diode MA2Z07700L SOD-323 35V 100mA 1 D102 661 3303020100080 Switching diode MA2S07700L 1.7*0.8mm 1 D101 662 3303020100080 Switching diode MA2S07700L 1.7*0.8mm...
  • Page 42 TC-700 EX PLUS Service Manual Material No. Description Qty. Ref. No. Print No. 703 3403007000000 Transistor DTA114EE(TL) 1 Q406 704 3403007000070 Transistor DTA144EE 1 Q110 705 3403007000070 Transistor DTA144EE 1 Q201 706 3403008000010 Transistor DTC114EE(TL) 1 Q108 707 3403008000010 Transistor DTC114EE(TL)
  • Page 43 TC-700 EX PLUS Service Manual Material No. Description Qty. Ref. No. Print No. 747 3701098340010 Crystal 9.8304MHz DSX530GA(5×3.2) 1 X501 748 3702368630020 Crystal 3.6864MHz DSX151GA(11.8×5.5) 1 X402 749 3801045030170 Ceramic filter 450KHz±4.5KHz CFWKA450KGFA－R0 1 CF202 750 3802499540070 Crystal filter 49.95MHz ±7.5kHz DSF753SDF 1 XF203 751 4002000000180 Chip fuse 0603-FF 0.25A-32V 0467.250NR...

  • Page 44: Tc-700 Ex Plus Uhf Parts List 1 ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ．43

    TC-700 EX PLUS Service Manual TC-700 EX PLUS UHF Parts List 1 Material No. Description Qty.Ref. No Print No. 1 3001050000000 Chip resistor 0402 0Ω J 1/16W 1 C488 2 3001050000000 Chip resistor 0402 0Ω J 1/16W 1 L201 3 3001050000000 Chip resistor 0402 0Ω J 1/16W 1 L202 4 3001050000000 Chip resistor 0402 0Ω...
  • Page 45 TC-700 EX PLUS Service Manual Material No. Description Qty.Ref. No Print No. 43 3001051020010 Chip resistor 0402 1KΩ J 1/16W 1 R466 44 3001051020010 Chip resistor 0402 1KΩ J 1/16W 1 R468 45 3001051020010 Chip resistor 0402 1KΩ J 1/16W 1 R512 46 3001051020010 Chip resistor 0402 1KΩ...
  • Page 46 TC-700 EX PLUS Service Manual Material No. Description Qty.Ref. No Print No. 87 3001051040010 Chip resistor 0402 100KΩ J 1/16W 1 R403 88 3001051040010 Chip resistor 0402 100KΩ J 1/16W 1 R428 89 3001051040010 Chip resistor 0402 100KΩ J 1/16W 1 R429 90 3001051040010 Chip resistor 0402 100KΩ...
  • Page 47 TC-700 EX PLUS Service Manual Material No. Description Qty.Ref. No Print No. 131 3001052200000 Chip resistor 0402 22Ω J 1/16W 1 R104 132 3001052200000 Chip resistor 0402 22Ω J 1/16W 1 R107 133 3001052210000 Chip resistor 0402 220Ω J 1/16W 1 R225 134 3001052220000 Chip resistor 0402 2.2KΩ...
  • Page 48 TC-700 EX PLUS Service Manual Material No. Description Qty.Ref. No Print No. 175 3001053930000 Chip resistor 0402 39KΩ J 1/16W 1 R146* T4F 176 3001053930000 Chip resistor 0402 39KΩ J 1/16W 1 R484 177 3001053940000 Chip resistor 0402 390KΩ J 1/16W 1 R449 178 3001053940000 Chip resistor 0402 390KΩ...
  • Page 49 TC-700 EX PLUS Service Manual Material No. Description Qty.Ref. No Print No. 219 3001056810000 Chip resistor 0402 680Ω J 1/16W 1 R105 220 3001056820000 Chip resistor 0402 6.8KΩ J 1/16W 1 R227 221 3001056820000 Chip resistor 0402 6.8KΩ J 1/16W 1 R239 222 3001056820000 Chip resistor 0402 6.8KΩ...
  • Page 50 TC-700 EX PLUS Service Manual Material No. Description Qty.Ref. No Print No. 263 3001061540010 Chip resistor 0603 150KΩ D 1/10W 1 RE29 T3D 264 3001061540010 Chip resistor 0603 150KΩ D 1/10W 1 RE30 T3C 265 3001063320000 Chip resistor 0603 3.3KΩ J 1/10W 1 R124 266 3001063930010 Chip resistor 0603 39KΩ...
  • Page 51 TC-700 EX PLUS Service Manual Material No. Description Qty.Ref. No Print No. 307 3101050500010 Chip capacitor 0402 5PF B 50V 1 C255* B3B 308 3101050500010 Chip capacitor 0402 5PF B 50V 1 C268* B1E 309 3101050500010 Chip capacitor 0402 5PF B 50V...
  • Page 52 TC-700 EX PLUS Service Manual Material No. Description Qty.Ref. No Print No. 351 3101051030020 Chip capacitor 0402 0.01UF K 25V 1 C219 352 3101051030020 Chip capacitor 0402 0.01UF K 25V 1 C226 353 3101051030020 Chip capacitor 0402 0.01UF K 25V 1 C230 354 3101051030020 Chip capacitor 0402 0.01UF K 25V...
  • Page 53 TC-700 EX PLUS Service Manual Material No. Description Qty.Ref. No Print No. 395 3101051040060 Chip capacitor 0402 0.1UF K 16V 1 C356 396 3101051040060 Chip capacitor 0402 0.1UF K 16V 1 C404 397 3101051040060 Chip capacitor 0402 0.1UF K 16V 1 C405 398 3101051040060 Chip capacitor 0402 0.1UF K 16V...
  • Page 54 TC-700 EX PLUS Service Manual Material No. Description Qty.Ref. No Print No. 439 3101052230000 Chip capacitor 0402 0.022UF K 16V 1 C401 440 3101052240010 Chip capacitor 0402 0.22UF Z 10V 1 C407 441 3101052700000 Chip capacitor 0402 27PF J 50V...
  • Page 55 TC-700 EX PLUS Service Manual Material No. Description Qty.Ref. No Print No. 483 3101054710010 Chip capacitor 0402 470PF K 50V 1 C362 484 3101054710010 Chip capacitor 0402 470PF K 50V 1 C413 485 3101054710010 Chip capacitor 0402 470PF K 50V...
  • Page 56 TC-700 EX PLUS Service Manual Material No. Description Qty.Ref. No Print No. 527 3101060600010 Chip capacitor 0603 6PF B 50V 1 CE7 528 3101060700020 Chip capacitor 0603 7PF B 50V 1 C127* B4C 529 3101060700020 Chip capacitor 0603 7PF B 50V...
  • Page 57 TC-700 EX PLUS Service Manual Material No. Description Qty.Ref. No Print No. 571 3104071050010 Tantalum capacitor 0805 1UF M 16V 1 C470 572 3104071050010 Tantalum capacitor 0805 1UF M 16V 1 C478 573 3104071050010 Tantalum capacitor 0805 1UF M 16V...
  • Page 58 TC-700 EX PLUS Service Manual Material No. Description Qty.Ref. No Print No. 615 3214307220010 Inductor 0805 22nH 1 L210* B2B 616 3221506601000 Chip ferrite bead 0603 600Ω±25% 1 L104 617 3221506601000 Chip ferrite bead 0603 600Ω±25% 1 L307 618 3221506601000 Chip ferrite bead 0603 600Ω±25% 1 L311 619 3221506601000 Chip ferrite bead 0603 600Ω±25%...
  • Page 59 TC-700 EX PLUS Service Manual Material No. Description Qty.Ref. No Print No. 659 3304060300010 Varactor HVC376BTRF-E 1 D301 660 3304060300010 Varactor HVC376BTRF-E 1 D302 661 3304060300010 Varactor HVC376BTRF-E 1 D303 662 3304060300010 Varactor HVC376BTRF-E 1 D304 663 3304060300010 Varactor HVC376BTRF-E...
  • Page 60 TC-700 EX PLUS Service Manual Material No. Description Qty.Ref. No Print No. 703 3410001000020 Transistor 2SA1745 1 Q502 704 3418001000010 Transistor AT-41511-TR1G 1 Q207 705 3499000000140 Transistor 2SK508-K52-T1B-A 1 Q302 706 3499000000140 Transistor 2SK508-K52-T1B-A 1 Q307 707 3499000000150 Transistor UMC4(NTR) NPN/...
  • Page 61 TC-700 EX PLUS Service Manual Material No. Description Qty.Ref. No Print No. 748 3001110190000 Chip resistor 2512 0.1Ω F 1W 1 RE27 T4C...

  • Page 62: Adjustment Description

    TC-700 EX PLUS Service Manual Adjustment Description Adjust the radio by PC programming software or by manual adjustment. In manual adjustment mode, the adjustment method is shown as follows (Refer to “Software Specification” for the manual adjustment mode). Required Test Instrument...
  • Page 63 TC-700 EX PLUS Service Manual Turn the radio on while holding down TK and SK2 keys simultaneously for 2 seconds, and the radio enters manual adjust mode with red LED flashes twice. (TK: Top key; SK1: Side key1; SK2: Side...
  • Page 64 TC-700 EX PLUS Service Manual 1 point tuning (MHz) TX: { RX: { Adjustment Method Turn the radio on while holding down TK and SK2 keys simultaneously for 2 seconds, and the radio enters manual adjust mode with red LED flashing twice. Refer to Manual Adjust Mode in TC-700 Software Specification for more details.
  • Page 65 TC-700 EX PLUS Service Manual Enter the adjust mode. TX TEST PTT key Adjust deviation to Turn to CH3. Adjust at HPF：20HZ (increase) 750Hz (wide), 3 point (wide), 1 point LPF：300HZ SK1 key 600Hz (medium) 3. CDCSS (medium) and (decrease)
  • Page 66 TC-700 EX PLUS Service Manual Enter the adjust mode. 6. CTCSS Turn to CH6. Adjust at 3 PTT key (increase) (254.1Hz) point (wide), 1 point SK1 key deviation (medium) and 1 point (decrease) High (narrow) respectively. Radio Adjust deviation to Enter the adjust mode.
  • Page 67 TC-700 EX PLUS Service Manual Group 1 Radio Modulation signal: Enter the adjust mode. 11. VOX Communication 1KHz, 45mv Turn to CH11. Adjust at 1 Save GAIN1 Test Set Press PTT to save; point (wide). Tx TEST (unavailable now) HPF: 20HZ...
  • Page 68 TC-700 EX PLUS Service Manual Receiver Item Condition Test Method Purpose Instrument Enter the adjust mode. Turn to Radio Adjust level to 1. Rx PTT key Group 2 CH1. Communication -119dBm. sensitivity SK1 key Adjust at 5 point (wide). Test Set SINAD≥12dB...

  • Page 69: Troubleshooting Flow Chart

    TC-700 EX PLUS Service Manual 7. RX voltage Enter the adjust mode. Turn to No adjustment Save CH7. Adjust at 1 point (wide). 6.6V ± 0.2V Note: Audio deviation of the receiver is 3KHz (wide), 2.5KHz(medium) and 1.5KHz (narrow). Troubleshooting Flow Chart...
  • Page 70 TC-700 EX PLUS Service Manual MCU Check Normal power-on Check the The RF circuit can’t alert tone? control circuit be driven. Replace Speaker works the speaker well? Check the Read circuit of read 9.8304MHz works available? frequency normally? Reset Exchange...
  • Page 71 TC-700 EX PLUS Service Manual Check Power supply is Exchange normal? Q306 Exchange Oscillator CV voltage in Check if Q305 Q305 Rx is normal? works well. Check Check if Q304 output normally? Q304 Check Check if feedback Q301 is normal.
  • Page 72 TC-700 EX PLUS Service Manual...
  • Page 73 TC-700 EX PLUS Service Manual No output power Check power Power supply supply circuit works well? The current is Control voltage is Check Q502 normal? normal? High Check transistor offset Check drive voltage and low pass stage network Repair the...
  • Page 74 TC-700 EX PLUS Service Manual No recieve Check if the power Check if control voltage Exchange 717 supply of AF IC is AFCO is normal. normal? Exchange IC Check if the input of Check if the output Exchange base band IC is normal.

  • Page 75: Disassembly And Assembly For Repair

    TC-700 EX PLUS Service Manual Disassembly and Assembly for Repair Never assemble or disassemble the FM-approved intrinsically safe radio in WARNING: a hazardous area. Remove the case assembly from the chassis (shown as Fig. 1) 1. Remove the volume knob and channel selector knob .
  • Page 76 TC-700 EX PLUS Service Manual Figure. 2 Cautions for Assembly Attaching radio case to the bracket 1. Make sure the waterproof cushion is firmly attached into the slot ① of the bracket. 2. Attach speaker and its waterproof ring to the corresponding place on the case ②...
  • Page 77 TC-700 EX PLUS Service Manual Figure. 5 Figure. 6...

  • Page 78: Exploded View

    TC-700 EX PLUS Service Manual Exploded View...

  • Page 79: Tc-700 Ex Plus Parts List 2 ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ．77

    TC-700 EX PLUS Service Manual TC-700 EX PLUS Parts List 2 Material No. Description Qty. 6000135000000 PTT key cover 6100068000000 Silica rubber PTT key 8600700500000 Model label 8600700500100 HYT logo, metal label 6201006000000 Inner liner knob 6000076000020 Channel selector knob...
  • Page 80 TC-700 EX PLUS Service Manual 7400023000010 PVC sheet 5002110000020 MIC 6000128000000 Battery latch 6201078000000 Battery latch baffle 7000036000000 Spring 6000133100030 Front case of radio unit 7101904020020 Self-tapping screw ST1.9*4mm 7102504000300 Machine screw M2.5*4.0mm 7402004520000 Self-tapping screw ST2.0*4.5mm 7102508000000 Machine screw M2.5*8.0mm...

  • Page 81: Packing

    TC-700 EX PLUS Service Manual Packing...

  • Page 82: Exploded View (Fm-Approved Battery)． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ． ．80

    TC-700 EX PLUS Service Manual Exploded View (FM-approved Battery)
  • Page 83 TC-700 EX PLUS Service Manual Parts List 2 (FM-approved Battery) Material No. Description Qty. 7103009000000 Machine screw M3.0*9mm 7000019000000 Battery spring 7400172000000 Battery's electrode piece, PC 6201444000000 Battery's discharging piece 7400161000000 Holder for battery's charging piece 6000131000010 Battery cover 6000484000000...

  • Page 84: Specifications

    TC-700 EX PLUS Service Manual Specifications General VHF: 136-174 MHz Frequency Range UHF: 400-450MHz, 420-470MHz, 400-450MHz, 470-520MHz, 350-400MHz, 300-350MHz, 400-470MHz, 450-520MHz Channel Capacity Channel Spacing 25 /20/12.5 KHz Frequency Stability ±2.5ppm Operating Voltage 7.4V Battery 1700mAh (Li-ion) Battery Life (5-5-90 duty cycle)
  • Page 85 TC-700 EX PLUS Service Manual development. HYT endeavors to achieve the accuracy and completeness of this manual, but no warranty of accuracy or reliability is given. All the specifications and design are subject to change without prior notice due to continuous technology development.

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