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.

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)…………………………………….……

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.