HYT TC-610 Manuals

TC-610/620 Service Manual 58 Adjustment Description ⅠDiagram of Operation Key (Take TC-610 for example) Ⅱ Instrument Radio Communication Test Set (HP8921) 1 set 10V/3A DC Regulated Power Supply 1 set Digital Voltmeter 1 set Ammeter 1 set Ⅲ Preparation Before Adjustment Put the board to be tested on the test clamp and turn the power on. Note: Each test point must be in good contact with the clamp. Ⅳ Adjustment Steps 1. Operations Before Adjustment 1）Adjustment of PCB Board After program is downloaded onto the PCB board and EEPROM is initialized with the configuration file (program is downloaded with the test frame and initialization can be done through the programming software or wired clone), check relative specifications at each position. If adjustment is required, connect the programming cable and enter the adjustment mode for PC adjustment 2) Adjustment of Radio Unit 1. Rotate to CH1. Power on the radio while holding down the PTT key and SK2 key for 2s at least. The orange LED (red LED + green LED) lights, indicating the entry into the adjustment mode. Release the keys to enter the corresponding Tx adjustment item (preset power) of the adjustment mode. The red LED lights. Adjust each specification according to the operation instructions. 2. Or connect the programming cable for real time adjustment in PC mode. TC-610/620 Service Manual 63 W Rotate to CH6, CH7 and CH8 respectively and CTCSS is set to low, medium and high respectively. Press PTT to enable this function. Wide band Short press PTT to switch frequencies on each channel. Adjust VR601 with a ceramic alignment screwdriver and check each frequency. Enter the mode to adjust finely with SK1/SK2 to limit the CTCSS deviation to the required range if necessary. 500~900Hz (It is recommended to adjust to 550-650Hz) CTCSS Deviation N Long press PTT (≥1.5s) to enter narrow band on CH6, CH7 and CH8 and short press PTT to switch frequencies. Radio communication test set BPF: <20Hz~300Hz Antenna VR601 SK1 SK2 Enter the mode to adjust finely with SK1/SK2 to limit the CTCSS deviation to the required range if necessary. 300~500Hz TC-610/620 Service Manual 63 W Rotate to CH6, CH7 and CH8 respectively and CTCSS is set to low, medium and high respectively. Press PTT to enable this function. Wide band Short press PTT to switch frequencies on each channel. Adjust VR601 with a ceramic alignment screwdriver and check each frequency. Enter the mode to adjust finely with SK1/SK2 to limit the CTCSS deviation to the required range if necessary. 500~900Hz (It is recommended to adjust to 550-650Hz) CTCSS Deviation N Long press PTT (≥1.5s) to enter narrow band on CH6, CH7 and CH8 and short press PTT to switch frequencies. Radio communication test set BPF: <20Hz~300Hz Antenna VR601 SK1 SK2 Enter the mode to adjust finely with SK1/SK2 to limit the CTCSS deviation to the required range if necessary. 300~500Hz

1 CONTENTS General-------------------------------------------------------------------------------------2 Radio Overview-------------------------------------------------------------------------3 Software Specifications--------------------------------------------------------------7 Circuit Description---------------------------------------------------------------------8 Semiconductor Data----------------------------------------------------------------16 TC-610/620 Parts List 1-------------------------------------------------------------18 ( U 1 ) … … … … … … … … … … … … … … … … … … … … … … … … . … … … … . … … … … ( U 2 ) … … … … … … … … … … … … … … … … … … … … … … … … … … … … … . … … … … Adjustment------------------------------------------------------------------------------46 Troubleshooting Flow Chart------------------------------------------------------56 Disassembly and Assembly-------------------------------------------------------55 Exploded View-------------------------------------------------------------------------64 TC-610/620 Parts List 2--------------------------------------------------------------66 Packing--------------------------------------------------------------------------------70 TC-610/620 PCB View----------------------------------------------------------------71 TC-610/620 Block Diagram---------------------------------------------------------74 TC-610/620 UHF ……………………………………………………………………………… TC-610/620 Level Diagram------------------------------------------------77 TC-610/620 Schematic Diagram--------------------------------------------------80 (U1) Schematic Diagram (AF & IF & PLL) ………………………………………………… (U1) Schematic Diagram (MCU & POWER)………………………………………….………… (U1) Schematic Diagram (VCO & RF)………………………………………….………… (U2) Schematic Diagram (AF & IF & PLL)…………………………………….…… 2 (U2) Schematic Diagram (MCU & POWER)………………………………………….………… (U2) Schematic Diagram (VCO & RF)………………………………………….…… Specifications-----------------------------------------------------------------------81 3 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. Safety and General Information The following general safety precautions as would normally apply, should be observed during all phases of operation, service and repair of this equipment. � This equipment should be serviced by qualified technicians only. � DO NOT operate the transmitter of radio unless all RF connectors are secure and any open connectors are properly terminated. � Do not modify the radio for any reason. � Use only HYT original batteries and chargers. � Use only the supplied or an approved antenna. � 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. � 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. Air bags inflate with great force. If a radio is placed in the air bag deployment area and the air bag inflates, the radio may be propelled with great force and cause serious injury to occupants of the vehicle. � Turn off your radio prior to entering any area with a potentially explosive atmosphere. � Do not charge your battery in a potentially explosive atmosphere. � To avoid possible interference with blasting operations, turn off your radio when you are near electrical blasting caps, in a blasting area, or in areas posted: “Turn off two-way radio.” Obey all signs and instructions. � Do not expose the radio to direct sunlight over a long time, nor place it close to heating source. � When using your radio, hold the radio in a vertical position with the microphone 3 to 4 centimeters away from your lips. � If you wear a radio on your body when transmitting, ensure that the radio and its antenna are at least 2.5cm away from your body. 4 Radio Overview TC-610 ① PTT ② SK1 (programmable key) ③ SK2 (programmable key ④ Speaker ⑤ Microphone ⑥ Antenna ⑦ LED ⑧ Channel Selector Knob ⑨ On-Off/Volume Control Knob ⑩ Battery Latch ⑪ Earpiece Jack and Programming Port ⑫ Earpiece Cover ⑬ Belt Clip ⑭ Battery ⑮ Belt Clip Screw ⑯ Charging Piece

TC-610/620 Service Manual 58 Adjustment Description ⅠDiagram of Operation Key (Take TC-610 for example) Ⅱ Instrument Radio Communication Test Set (HP8921) 1 set 10V/3A DC Regulated Power Supply 1 set Digital Voltmeter 1 set Ammeter 1 set Ⅲ Preparation Before Adjustment Put the board to be tested on the test clamp and turn the power on. Note: Each test point must be in good contact with the clamp. Ⅳ Adjustment Steps 1. Operations Before Adjustment 1）Adjustment of PCB Board After program is downloaded onto the PCB board and EEPROM is initialized with the configuration file (program is downloaded with the test frame and initialization can be done through the programming software or wired clone), check relative specifications at each position. If adjustment is required, connect the programming cable and enter the adjustment mode for PC adjustment 2) Adjustment of Radio Unit 1. Rotate to CH1. Power on the radio while holding down the PTT key and SK2 key for 2s at least. The orange LED (red LED + green LED) lights, indicating the entry into the adjustment mode. Release the keys to enter the corresponding Tx adjustment item (preset power) of the adjustment mode. The red LED lights. Adjust each specification according to the operation instructions. 2. Or connect the programming cable for real time adjustment in PC mode. TC-610/620 Service Manual 63 W Rotate to CH6, CH7 and CH8 respectively and CTCSS is set to low, medium and high respectively. Press PTT to enable this function. Wide band Short press PTT to switch frequencies on each channel. Adjust VR601 with a ceramic alignment screwdriver and check each frequency. Enter the mode to adjust finely with SK1/SK2 to limit the CTCSS deviation to the required range if necessary. 500~900Hz (It is recommended to adjust to 550-650Hz) CTCSS Deviation N Long press PTT (≥1.5s) to enter narrow band on CH6, CH7 and CH8 and short press PTT to switch frequencies. Radio communication test set BPF: <20Hz~300Hz Antenna VR601 SK1 SK2 Enter the mode to adjust finely with SK1/SK2 to limit the CTCSS deviation to the required range if necessary. 300~500Hz TC-610/620 Service Manual 63 W Rotate to CH6, CH7 and CH8 respectively and CTCSS is set to low, medium and high respectively. Press PTT to enable this function. Wide band Short press PTT to switch frequencies on each channel. Adjust VR601 with a ceramic alignment screwdriver and check each frequency. Enter the mode to adjust finely with SK1/SK2 to limit the CTCSS deviation to the required range if necessary. 500~900Hz (It is recommended to adjust to 550-650Hz) CTCSS Deviation N Long press PTT (≥1.5s) to enter narrow band on CH6, CH7 and CH8 and short press PTT to switch frequencies. Radio communication test set BPF: <20Hz~300Hz Antenna VR601 SK1 SK2 Enter the mode to adjust finely with SK1/SK2 to limit the CTCSS deviation to the required range if necessary. 300~500Hz TC-610/620 Service Manual 64 Rotate to CH9. VOX 1 Press SK1 or SK2 to enable the function. Radio communication test set BPF: <20Hz~15kHz AF:1kHz 10mV Adjust with SK1/SK2 and rotate the Channel Selector knob to save after one-point adjustment. Rotate to CH10. VOX 2 Press SK1 or SK2 to enable the function. Radio communication test set BPF: <20Hz~15kHz AF:1kHz 6mV Adjust with SK1/SK2 and rotate the Channel Selector knob to save after one-point adjustment Rotate to CH11. VOX 3 Press SK1 or SK2 to enable the function. Radio communication test set BPF: < 20Hz~15kHz AF:1kHz 4.5mV Adjust with SK1/SK2 and rotate the Channel Selector knob to save after one-point adjustment Rotate to CH12 VOX 4 Press SK1 or SK2 to enable the function. Radio communication test set BPF: < 20Hz~15kHz AF:1kHz 3.5mV Adjust with SK1/SK2 and rotate the Channel Selector knob to save after one-point adjustment VOX Rotate to CH13. VOX 5 Press SK1 or SK2 to enable the function. Radio communication test set BPF: <20Hz~15kHz AF:1kHz 2mV Antenna Accessory jack SK1 SK2 Adjust with SK1/SK2 and rotate the Channel Selector knob to save after one-point adjustment Tx Low Voltage Threshold Digital voltmeter Power supply port Power supply Adjust the output voltage of the power supply and check the alarm level 6.2V-7.0V (≤7.0V: LED flashes; ≤6.2V: a warning tone is heard and transmission is suspended) Rotate to CH8. Low frequency Rx Sensitivity (bandpass) Short press PTT to switch to other frequencies. Radio communication test set SSG: -119dBm MOD: 1KHz DEV: 3.0KHz Filter: 0.3～3KHz Antenna Accessory jack SK1 SK2 Check bandpass waveform. Adjust with SK1/SK2. Rotate the Channel Selector knob to save after five-point adjustment. Check: Rotate the Volume Control knob to an appropriate position to make the output unlimited. SINAD: ≥12dB