HYT TC-600 Service Manual
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HYT TC-600 Service Manual

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Contents
General..........................................................................................2
Brief Introduction............................................................................3
Software Specification.....................................................................5
Circuit Description.........................................................................11
CPU Pins.......................................................................................16
TC-600U Part List 1.........................................................................18
TC-600V Part List 1.........................................................................30
Adjustment Description..................................................................42
Disassembly and Assembly for Repair..............................................45
Exploded View...............................................................................48
Part List 2....................................................................................49
Packing........................................................................................51
PC Board View..............................................................................52
Block Diagram...............................................................................56
Schematic Diagram........................................................................57
Specifications...............................................................................59

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  • Page 1: Table Of Contents

    Contents General………………………………………………………………………………2 Brief Introduction………………………………………………………………….3 Software Specification……………………………………………………………5 Circuit Description……………………………………………………………….11 CPU Pins…………………………………………………………………………...16 TC-600U Part List 1…………………...………………………………………….18 TC-600V Part List 1…………………...………………………………………….30 Adjustment Description…………………………………………………………42 Disassembly and Assembly for Repair……………………………………….45 Exploded View…………………………………………………………………….48 Part List 2…………………………………………………………………………49 Packing…………………………………………………………………………….51 PC Board View……………………………………………………………………52 Block Diagram…………………………………………………………………….56 Schematic Diagram………………………………………………………………57 Specifications…………………………………………………………………….59...

  • Page 2: General

    TC-600 Service Manual General Manual Scope This manual is intended for use by experienced technicians familiar with similar types of communication equipment. It contains all service information required for the equipment and is current as of the publication date. User Safety Information...

  • Page 3: Brief Introduction

    TC-600 Service Manual Brief Introduction Antenna Used to transmit/receive signals. LED Indicator The light will glow red during transmission and glow green during receiving. During transmission, the light flashes red when the battery voltage is low. 3. Channel Selector Knob 4.
  • Page 4 TC-600 Service Manual 9. External Jack (for external earphone or radio programming) Rotate the jack cover and insert accessory plug, or insert programming cable into the jack to program the radio via programming software. 10. Battery 11. Belt Clip Used to clip radio on your belt.

  • Page 5: Software Specification

    TC-600 Service Manual Software Specification Radio Feature Description 1. Use Channel Selector Knob to choose from 15+1(Scan) channels 2. Monitor 3. CTCSS/CDCSS Encode & Decode CTCSS: 38 groups CDCSS: 83 groups 4. Wideband (25KHz) / Narrowband (12.5KHz) 5. Channel Scan (Priority channel and Revert channel available) 6.
  • Page 6 1. User Mode User Mode is for conventional communication operation. Disconnect the two SELF points and then turn the power on, the radio enters User Mode. (Refer to “TC-600 Owner’s Manual” for detailed operation description.) 2. Model Set Mode Select MS1 according to the radio model.
  • Page 7 TC-600 Service Manual Turn off the power and then disconnect the two SELF points to complete the model setting. For example, MS1 of TC-600U (450.000~469.995MHz) is 0 and its model is 7(Refer to “Initial Data Table”). To initialize its model and channel data, you can operate as following: Disconnect the two MS1 points.
  • Page 8 TC-600 Service Manual 4. PC Adjust Mode The following settings can be adjusted through the programming software: Low battery alert level SQL9 SQL3 CTCSS deviation (wide) CDCSS deviation (wide) CTCSS deviation (narrow) CDCSS deviation (narrow) 5. Manual Adjust Mode If Manual Adjust Mode is enabled, turn on the power while holding down [PTT] and Function Key simultaneously, the radio enters Manual Adjust Mode in 2 seconds.
  • Page 9 TC-600 Service Manual CH12-CH16 are used to adjust transmitter and receiver. Press [PTT] to transmit; release to receive. In receive mode, short press the Function Key to toggle among high and low power, or long press it to switch between wideband and narrowband. Three Beeps alternating from high tone to low tone indicate that the transmit power is switched from high to low;...
  • Page 10 TC-600 Service Manual Initial Data Table 1CH (Center) 2CH (Low) 3CH (High) 9-16CH Frequency Model (MHz) (MHz) (MHz) (MHz) (MHz) (MHz) (MHz) (MHz) (MHz) (MHz) (MHz) (MHz) (MHz) (MHz) 150.000~173.995 +45.050 162.000 162.100 150.000 150.100 173.975 173.900 162.500 162.550 162.600 162.550...

  • Page 11: Circuit Description

    TC-600 Service Manual Circuit Description 1. Frequency Configuration The receiver utilizes double conversion superheterodyne. The first IF is 45.050MHz and the second is 455 KHz. The first local oscillator signal is supplied from PLL circuit. Frequency needed in the transmitter is supplied from PLL circuit. Figure 1 shows the frequency configuration.
  • Page 13 TC-600 Service Manual Figure 2 Receiver Section Configuration 2) The First Mixer The signal from RF amplifier is mixed with the first local oscillator signal from PLL frequency synthesizer in the first mixer (Q23) to generate a 45.050MHz first IF signal. The first IF signal is then fed through two monolithic crystal filters (XF1) to remove spurious signals from adjacent channels.
  • Page 15 TC-600 Service Manual FM IF IC1 AF/PF AMP IF AMP 39 40 IC11 Figure 3. AF Amplifier and Squelch Circuit 6) Receive Signaling CTCSS/CDCSS Over 300Hz audio frequencies of the signal output from IC1 is cut off by a low pass filter. The resulting signal enters the microprocessor IC11.
  • Page 17 TC-600 Service Manual Figure 4 PLL Circuit 2) VCO The operation frequency is generated by Q16 in transmit mode and by Q8 in receive mode. The operation frequency generates a control voltage through the phase comparator to control the varactor diodes, so that the oscillator frequency is made consistent with the preset frequency in CPU (D2 and D3 in transmit mode, D7 and D8 in receive mode).
  • Page 19 TC-600 Service Manual 3) DTMF/2-Tone Encoder DTMF/2-Tone signalings are generated by IC11 and outputted in parallel by Pin 48-51. The output signal is reshaped by resistor array CP7-CP10, then sent to IC3 (1/4) for amplification, and filtered by active LPF consisting of Q25, Q24 and other components to eliminate the corresponding HF emission before being passed to TX VCO for modulation.

  • Page 21: Cpu Pins

    TC-600 Service Manual CPU Pins PIN No. PIN NAME DESCRIPTION CTCSS/CDCSS input BUSY Busy signal input BATT Battery voltage detect TIBI CTCSS/CDCSS external circuit center point input SAVE Battery save control H: OFF L: ON TXLow TX power control H: Low power L: High power...
  • Page 22 TC-600 Service Manual ENC0 ENC1 Channel Selector Knob encode input ENC2 ENC3 AF_MUTE AF mute control AF_PWR AF power supply control CTDCSS5 CTDCSS4 CTDCSS3 CTCSS/CDCSS code output CTDCSS2 CTDCSS1 CTDCSS0 WNTC Wideband/narrowband L: W H: N DTMF/2ToneOut5 DTMF/2ToneOut4 DTMF/2ToneOut3 DTMF/2-Tone code output...

  • Page 23: Tc-600U Part List 1

    TC-600 Service Manual TC-600U Part List 1 Ref. No. Address Material No. Material Description Remark 3001066840000 Resistor 0603 6 80K 　 　 3001062740010 Resistor 0603 　 2 70K 　 3001062220000 Resistor 0603 2 .2K 　 　 3001064730000 Resistor 0603 4 7K 　...
  • Page 24 TC-600 Service Manual Ref. No. Address Material No. Material Description Remark 3001061520000 Resistor 0603 1 .5K 　 　 3001061020010 Resistor 0603 　 　 3001061020010 Resistor 0603 　 　 3001061020010 Resistor 0603 　 　 3001064730000 Resistor 0603 　 4 7K 　...
  • Page 25 TC-600 Service Manual Ref. No. Address Material No. Material Description Remark R105 3001064730000 Resistor 0603 4 7K 　 　 R106 3001060000000 Resistor 0603 　 　 R107 3001060000000 Resistor 0603 　 　 R108 3001063310010 Resistor 0603 3 30 　 　 R109...
  • Page 27 TC-600 Service Manual Ref. No. Address Material No. Material Description Remark R155 3001061850000 Resistor 0603 1 .8M 　 　 R156 3001061850000 Resistor 0603 　 1 .8M 　 R157 3001065630000 Resistor 0603 　 5 6K 　 R158 3001063930010 Resistor 0603 3 9K 　...
  • Page 29 TC-600 Service Manual Ref. No. Address Material No. Material Description Remark R508 3001060000000 Resistor 0603 　 　 R601 3001063320000 Resistor 0603 　 3 .3K 　 R602 3001060000000 Resistor 0603 　 　 R606 3001064730000 Resistor 0603 4 7K 　 　 R607...
  • Page 30 TC-600 Service Manual Ref. No. Address Material No. Material Description Remark 3101054710010 Capacitor 0402 4 70P K 50V 　 3101054710010 Capacitor 0402 　 4 70P K 50V 3101054710010 Capacitor 0402 　 4 70P K 50V 3101054710010 Capacitor 0402 4 70P K 50V 　...
  • Page 31 TC-600 Service Manual Ref. No. Address Material No. Material Description Remark 3101051020010 Capacitor 0402 1 000P K 50V 　 3101051020010 Capacitor 0402 　 1 000P K 50V 3101051020010 Capacitor 0402 　 1 000P K 50V 3101051020010 Capacitor 0402 1 000P K 50V 　...
  • Page 32 TC-600 Service Manual Ref. No. Address Material No. Material Description Remark C129 3101054700010 Capacitor 0402 4 7P J 50V 　 C130 3101051000000 Capacitor 0402 　 1 0P D 50V C132 3101051010030 Capacitor 0402 　 1 00P J 50V C133 3101053340000 Capacitor 0402 0 .33uF K...
  • Page 33 TC-600 Service Manual Ref. No. Address Material No. Material Description Remark C179 3101051010030 Capacitor 0402 1 00P J 50V 　 C180 3101051010030 Capacitor 0402 　 1 00P J 50V C181 3101053920000 Capacitor 0402 　 3 900P K 25V C182 3101050600010...
  • Page 34 TC-600 Service Manual Ref. No. Address Material No. Material Description Remark C256 3101051040040 Capacitor 0402 0 .1uF K 10V 　 C257 3101054710010 Capacitor 0402 　 4 70P K 50V C506 3101062000000 Capacitor 0603 　 2 0P J 50V 3303210200009 Diode M A2S37600L 　...
  • Page 35 TC-600 Service Manual Ref. No. Address Material No. Material Description Remark 3231351640009 E2-0.35-1.6-4TL 3231351640009 E2-0.35-1.6-4TL 3231351640009 E2-0.35-1.6-4TL 3231351630000 E2-0.35-1.6-3TR 3231351630000 E2-0.35-1.6-3TR 3231351630000 E2-0.35-1.6-3TR 3213212471009 Inductor 1008 470nH 3231351630000 E2-0.35-1.6-3TR 3210305150010 Inductor 0402 15nH 3212105101000 Inductor 0402 100nH 3213306221019 Inductor 0603 0.22uH...
  • Page 37 TC-600 Service Manual Ref. No. Address Material No. Material Description Remark 3599000000019 R D01MUS1 　 3403007000029 Transistor 　 D TA114YE(TL) 3403008000019 Transistor 　 D TC114EE(TL) 3401001000039 Transistor 2 SA1362(GR) 　 3503020000019 　 2 SK1588-T1 3403008000019 Transistor D TC114EE(TL) 　 3503020000039 　...

  • Page 39: Tc-600V Part List 1

    TC-600 Service Manual TC-600V Part List 1 Ref. No. Address Material No. Material Description Remark 3001066840000 Resistor 0603 6 80K 　 　 3001062740010 Resistor 0603 　 2 70K 　 3001062220000 Resistor 0603 2 .2K 　 　 3001064730000 Resistor 0603 4 7K 　...
  • Page 41 TC-600 Service Manual Ref. No. Address Material No. Material Description Remark 3001061520000 Resistor 0603 　 1 .5K 　 3001062720000 Resistor 0603 2 .7K 　 　 3001061520000 Resistor 0603 　 1 .5K 　 3001061020010 Resistor 0603 　 　 3001061020010 Resistor 0603 　...
  • Page 43 TC-600 Service Manual Ref. No. Address Material No. Material Description Remark 3001064720000 Resistor 0603 　 4 .7K 　 R100 3001061030010 Resistor 0603 1 0K 　 　 R101 3001065630000 Resistor 0603 　 5 6K 　 R102 3001063930010 Resistor 0603 　 3 9K 　...
  • Page 44 TC-600 Service Manual Ref. No. Address Material No. Material Description Remark R148 3001065640000 Resistor 0603 　 5 60K 　 R149 3001065630000 Resistor 0603 5 6K 　 　 R150 3001061240010 Resistor 0603 　 1 20K 　 R151 3001060000000 Resistor 0603 　...
  • Page 45 TC-600 Service Manual Ref. No. Address Material No. Material Description Remark R203 3001061020010 Resistor 0603 　 　 R204 3001061230000 Resistor 0603 1 2K 　 　 R205 3101061040010 Capacitor 0603 　 0 .1uF K 16V R508 3001060000000 Resistor 0603 　 　...
  • Page 46 TC-600 Service Manual Ref. No. Address Material No. Material Description Remark 3101054710010 Capacitor 0402 　 4 70P K 50V 3101051040040 Capacitor 0402 0 .1uF K 10V 　 3101051040040 Capacitor 0402 　 0 .1uF K 10V 3101051040040 Capacitor 0402 　 0 .1uF K 10V...
  • Page 47 TC-600 Service Manual Ref. No. Address Material No. Material Description Remark 3104071050000 Ta-capacitor 0805 1.0uF 6.3V.M 3104071050000 Ta-capacitor 0805 1.0uF 6.3V.M 3101051010030 Capacitor 0402 　 1 00P J 50V 3101056800000 Capacitor 0402 　 6 8P J 50V 3101061030010 Capacitor 0603 　...
  • Page 48 TC-600 Service Manual Ref. No. Address Material No. Material Description Remark C137 3101051030020 Capacitor 0402 　 0 .01uF K 16V C138 3101054700010 Capacitor 0402 4 7P J 50V 　 C139 3101052000000 Capacitor 0402 　 2 0PF C140 3101050200000 Capacitor 0402 2P C 50V...
  • Page 49 TC-600 Service Manual Ref. No. Address Material No. Material Description Remark C184 3104074750010 Ta-capacitor 0805 4.7uF 6.3V.M C185 3101053330000 Capacitor 0402 0 .033uF K 16V 　 C186 3101050500010 Capacitor 0402 　 5 P B 50V C187 3101051000000 Capacitor 0402 　...
  • Page 50 TC-600 Service Manual Ref. No. Address Material No. Material Description Remark 3303020100029 Diode 　 M A2S11100L 3304010100069 Diode 1SV269(TPH2) 3303020100079 Diode 　 M A2Z07700L 3303020100089 Diode 　 M A2S07700L 3303020100079 Diode 　 M A2Z07700L 3303010500029 Diode 　 1 SS372(TE85L) 3303030100019 Diode 　...
  • Page 51 TC-600 Service Manual Ref. No. Address Material No. Material Description Remark 3213212181009 Inductor 　 1 80nH 3213306221019 Inductor 0 .22uH 　 3213212331000 Inductor 　 3 30nH 3210108330009 Inductor 　 3 3nH 3213306682009 Inductor 　 6 .8uH 3213212331000 Inductor 　 3 30nH...
  • Page 52 TC-600 Service Manual Ref. No. Address Material No. Material Description Remark 3102992000049 Trimmer Capacitor 10P 3102992000049 Trimmer Capacitor 10P 3102992000049 Trimmer Capacitor 10P 3002994730009 Trimmer resistor 47K Ω 3002996830009 Trimmer resistor 68K 3002996830009 Trimmer resistor 68K 3002994730009 Trimmer resistor 47K...

  • Page 53: Adjustment Description

    TC-600 Service Manual Adjustment Description The radio can be adjusted with PC programming software or by manual adjustment. Manual adjustment procedure of TC-600 is shown as follows. (Refer to “Model Set Mode” and “Manual Adjust Mode” in Software Specification section.) Instrument:...
  • Page 55 TC-600 Service Manual RECEIVER: (Enter the Manual Adjust Mode) Measurement Adjustment Specification Item Condition /Remarks Test Instrument Terminal Part Method Adjust the waveform to the top, and the top is flat, 1. RX Center. Turn the bandwidth is about Band Pass...
  • Page 57 TC-600 Service Manual Transmitter Measurement Adjustment Specification Item Condition Test Instrument Terminal Parts Method /Remarks 1. TX Center. Turn to CH12 1.Transmit Radio Communication Adjust it to center in manual adjust mode and Error ≤ ± 250Hz frequency Test Set frequency press PTT.

  • Page 59: Disassembly And Assembly For Repair

    TC-600 Service Manual Disassembly and Assembly for Repair Disassemble the radio 1. Turn off the radio. 2. Remove the Battery: a. Push the battery latch on the back panel towards the top of the radio. b. Pull the top of the battery away from the radio chassis, and lift the battery from the radio. (See Figure 1) ①...
  • Page 61 TC-600 Service Manual d. Lift the bottom of the chassis and pull it away from the front cover. (See Figure 3) Fig. 3 The disassembled main unit is shown as Figure 4. Fig. 4 4. Disassemble the PTT key a. Remove the PTT holder (plastic) out of the PTT key.
  • Page 62 TC-600 Service Manual Assemble the radio 1. Attach the PTT key a. Press the PTT key into the corresponding opening in the front cover. b. Slide the PTT holder into the key in indicated direction. (See Figure 6) Fig. 6 2.

  • Page 63: Exploded View

    TC-600 Service Manual Exploded View...

  • Page 65: Part List 2

    TC-600 Service Manual Part List 2 Material No. Material Name Vary with frequencies TC600 Antenna 6100037000010 TC600 PTT key 6000079000000 TC600 PTT holder 6000080000020 TC600 light guide 6000076000100 TC600 Knob (channel) 6000077000100 TC600 Knob (volume) 6201006000000 Inner liner knob (channel)
  • Page 66 TC-600 Service Manual 7400019000000 TC600 Aluminum chassis PVC cushion 6300010000000 Holder (belt clip) 6201035000010 Metallic shrapnel (belt clip) 7000018000020 Spring (belt clip) 7000048000000 Shaft (belt clip) 6000154100010 TC600 Belt clip Varies with models TC600 front case (battery) 6201082000000 Charging terminal (battery)

  • Page 67: Packing

    TC-600 Service Manual Packing...

  • Page 69: Specifications

    TC-600 Service Manual Specifications 400 MHz ~420 MHz 450 MHz ~470 MHz Frequency Range 136 MHz ~150 MHz 150 MHz ~174 MHz Channel Capacity (simplex) Channel Spacing 25KHz /12.5KHz Antenna Impedance Microphone Impedance Ω Operating Voltage 7.2V DC Frequency Stability ±5.0×10...

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