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HYT TC-618, Service Manual

The HYT TC-618 is a reliable two-way radio designed for seamless communication. Enjoy crystal-clear sound quality and convenient features with this user-friendly device. Enhance your experience with the free TC-618 Service Manual, available for download at our website, ensuring effortless usage and maintenance.

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TC-618/626 Service Manual

72

Freq. 1 Freq. 2 Freq. 3 Freq. 4 Freq. 5 Freq. 1 Freq. 2 Freq. 3 Freq. 4 Freq. 5

1

Preset RF Power

Y

2

TX Low Power

Y

Y

Y

Y

Y

3

Reserved Channel
(Adjustment N/A)

4

TX High Power

Y

Y

Y

Y

Y

5

CDCSS Deviation

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

6

CTCSS Deviation (67Hz)

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

7

CTCSS Deviation
(151.8Hz)

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

8

CTCSS Deviation
(254.1Hz)

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

9

VOX Level 1

Y

10

VOX Level 2

Y

11

VOX Level 3

Y

12

VOX Level 4

Y

13

VOX Level 5

Y

14

TX Low Voltage
Threshold

Y

1

SQL On 1

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

2

SQL On 5

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

3

SQL On 9

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

4

SQL Off 1

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

5

SQL Off 5

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

6

SQL Off 9

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

7

RX Low Voltage
Threshold

Y

8

Bandpass Filter

Y

Y

Y

Y

Y

Note: Y indicates valid frequency, and the remaining channel is blank with no adjustment items.

TX Section

RX Section

TC-618/626 Adjustment Item

Channel Adjustable Frequency

Wide Bandwidth

Narrow Bandwidth

1)

To switch between Tx group and Rx group

Rotate the

Channel Selector

knob to CH16 and long press

PTT

to switch between Tx group and Rx

group. If the LED glows red, Tx group is entered; if the LED glows green, Rx group is entered.

The LED solidly glows red for adjustment of Tx group items.

The LED solidly glows green for adjustment of Rx group items.

2)

To switch between wide bandwidth and narrow bandwidth/between frequencies in an

adjustment item

In an adjustment item, long press

PTT

to switch between wide bandwidth and narrow bandwidth.

And the first frequency of the current bandwidth is the default adjustment point. After selecting a

bandwidth, short press

PTT

to switch between frequencies.

3)

Adjustment Items

TX group:

TX Frequency Tolerance, VCO Lock Voltage, Max. Deviation and Modulation Sensitivity

Note:

These items are adjusted outside the adjustment mode via hardware.

TX Low Power, TX High Power, CDCSS Waveform, CDCSS Deviation, CTCSS Deviation (low),

Summary of Contents for TC-618

Page 1: ......

Page 2: ...iption 11 CPU Pins 19 TC 618 626 Parts List 1 22 Adjustment Description 71 Troubleshooting Flow Chart 83 Disassembly and Assembly for Repair 86 Exploded View 89 TC 618 626 Parts List 2 91 Packing 94 TC 618 626 PCB View 95 TC 618 626 Level Diagram 99 TC 618 626 Block Diagram 100 TC 618 626 Schematic Diagram 102 Specifications 103 ...

Page 3: ...ction 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 ...

Page 4: ...deployment area Turn off your radio prior to entering any area with explosive and flammable materials Do not charge or replace your battery in a location with explosive and flammable materials Turn off your radio before entering a blasting 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 may result Do not expose the r...

Page 5: ... Key 2 SK1 Side Key 1 3 SK2 Side Key 2 4 Speaker 5 Microphone 6 Antenna 7 LED Indicator 8 Channel Selector Knob 9 Radio On Off Volume Control Knob 10 Battery Latch 11 Accessory Jack 12 Accessory Jack Cover 13 Belt Clip 14 Battery 15 Screw of Belt Clip 16 Charging Piece ...

Page 6: ... Battery 15 Screw of Belt Clip 16 Charging Piece PTT Push to Talk Key Press and hold down the PTT key to transmit and release it to receive SK1 Side Key 1 SK1 is a programmable key that can be assigned with long short press function by your dealer SK2 Side Key 2 SK2 is a programmable key that can be assigned with long short press function by your dealer Note Short Press means key press shorter tha...

Page 7: ... continuously A TOT pre alert tone sounds before the TOT timer expires Receiving The LED glows green when carrier is present Scanning The LED flashes green once every second during the scanning process Scan Start Alert programmable by the dealer one beep Scan End Alert programmable by the dealer one beep Priority Scan Alert programmable by the dealer one beep if the radio is currently on a priorit...

Page 8: ...omatic adjustment 15 High Low Power Switch 2 0 5 0W 16 Wide Narrow Bandwidth Compatibility 17 Busy Channel Lockout transmission prohibited in busy status 18 Wired Clone 19 Battery Strength Indication 20 Manual Adjustment 21 VOX and Five Selectable Sensitivity Levels Mode Description User Mode It is a conventional communication mode After the radio is turned on it enters the User Mode PC Programmin...

Page 9: ...adio will stop cloning and the red LED on it will go out indicating both radios are ready for another cloning operation 4 When cloning ends the source radio goes back to the standby status Press SK2 again to begin another cloning operation Manual Adjust Mode Hold down PTT and SK2 on a radio while powering it on and the radio enters Manual Adjust Mode Note This operation is subject to the option Tu...

Page 10: ...certain item long press PTT orange LED flashes indicating valid press to switch between wide narrow bandwidth And the first frequency of the current bandwidth is the frequency for adjustment by default 5 To switch between frequencies Short press PTT orange LED flashes indicating valid press to switch between frequencies orderly under certain bandwidth and certain adjustment item 6 To adjust the va...

Page 11: ...pling Press SK1 or SK2 after entering the above items to activate AD sampling including calculation once Rotate the Channel Selector knob to save the current AD sampling value If neither of SK1 or SK2 is pressed the adjustment value will not be updated and AD sampling will not be activated 8 Description of key press Short press key press shorter than 1 5s Long press key press not shorter than 1 5s...

Page 12: ...r 12 5 KHz reference frequencies via a fixed counter in the PLL at U202 Meantime the signal from the VCO goes through the buffer Q102 and amplifier Q103 and then it feeds to the PLL at U202 where it is divided by a variable frequency divider In the phase detector PD of PLL the new signal derived from frequency division is compared with the reference frequencies After passing through a low pass fil...

Page 13: ...03 Figure 2 To obtain the required RF power the RF signal from VCO goes to the buffer Q104 and to the driver amplifiers Q400 and Q401 Then the amplified RF signal feeds to the driver Q402 which pre amplifies power of the input signal to drive the final stage power amplifier Q403 The input RF signal is then further amplified by Q403 and feeds to the LC low pass filter LPF through the Tx Rx switchin...

Page 14: ... AN29160 C528 Figure 4 The mixer circuit mainly mixes the local oscillator signal from VCO with the received RF signal to provide the first IF signal for frequency discrimination by the demodulator chip active mixer is applied The mixer Q501 uses a dual gate MOSFET 3SK318 and is characterized by good noise characteristic square law characteristic and high isolation degree between the first local o...

Page 15: ...ct Output SQ Level Detect Output Rx Tx Audio Process Convert Audio Amplify etc to be realized in it In addition it can be used for both transmission and reception 1 Block diagram of Tx audio signaling processing circuit 0 sp Amp SF AMP TX Tone AFMOD Mic amp U200 AN29160AA PROCESSER signalling input AF HPF 5th HPF Pre Emphasis mic M IC3 AF mute volume mic mute LIM TX AUDIO OUT CPU TX VCO Figure 6 a...

Page 16: ...pass filter and de emphasis circuit This flow of audio signals are amplified at U200 and restored after frequencies below 300Hz are removed Then the restored audio signals are adjusted by the potentiometer and feed to the audio power amplifier U201 which performs power amplification to drive the speaker directly To obtain larger power the BTL bridge dual end output is adopted 2 Rx Signaling Proces...

Page 17: ... CTC 7 W N 8 UART 9 BAT_BAT 10 PLL_LD CHANNEL SW Figure 8 The MCU control circuit is mainly composed of MCU EEPROM reset IC keys knobs etc Main functions realized by this circuit are 1 Signal Control To control Battery Save Mode To control high low power switch To control wide narrow bandwidth switch To control Tx Rx switch To control APC TUNE output voltage To control Tx power supply and power su...

Page 18: ... After regulated the VCC_5V voltage is output for use by MCU and baseband processor chip As the radio operates at half duplex mode the Tx and Rx power supplies need to be controlled alternately In addition to meet requirements of battery save mode MCU needs to output a pulse signal SAVE control signal with fixed duty ratio If the SAVE control signal is at high level Q610 becomes conductive and pro...

Page 19: ...bled 1 When a VOX earpiece is plugged into the accessory jack Q201 is cut off and MIC_EN switches from low level to high level Meantime Q202 and R204 form a closed circuit with the external earpiece Q202 is conductive and EXT PTT switches from low level to high level In this case the VOX earpiece is determined by MCU and the VOX function is enabled When the VOX level 5 levels adjustable reaches th...

Page 20: ...nput from the Channel Selector Knob connected with pull up resistor 11 P71 TI0 T R T R O To control Tx Rx switch H Rx L Tx 12 P70 TO0 Reserve Reserve O Reserved 13 MOD For programmi ng For programmi ng I For operating mode indication during programming it is connected with VCC and a 47K resistor is connected between the pin and the grounded Vss during non programming period only a 47K resistor is ...

Page 21: ...P22 TO00 TONE TONE O To output BEEP 38 P23 TO01 W N W N O To control wide narrow band W L N H 39 P24 EC0 Reserve Reserve O Reserved 40 P50 SCL0 SCL SCL SCL To output clock signal to EEPROM 41 P51 SDA0 SDA SDA SDA To output data signal to EEPROM 42 P52 PPG1 AP TU AP TU PWM To output APC TUNE signal 43 P53 TRG1 TX_CTRL TX_CTRL O To control Tx power supply H valid 44 P60 PPG10 AN29160 PLLCLK AN29160 ...

Page 22: ... AN06 Reserve Reserve O Reserved 58 P35 AN05 TI TI I AD For input of CTCSS CDCSS 59 P34 AN04 BUSY BUSY I AD For input of busy channel detection 60 P33 AN03 BAT_DET BAT_DET I AD For input of battery voltage detection 61 P32 AN02 Reserve Reserve O Reserved 62 P31 AN01 Reserve VOX I AD For input of VOX detection 63 P30 AN00 Reserve Reserve Reserved 64 AVss GND GND A D GND pin ...

Page 23: ...00Ω F 1 16W RoHS 1 R698 B4J 24 3001051020000 Chip resistor 0402 1KΩ F 1 16W RoHS 1 R102 T4I 25 3001051020000 Chip resistor 0402 1KΩ F 1 16W RoHS 1 R108 T4G 26 3001051020000 Chip resistor 0402 1KΩ F 1 16W RoHS 1 R110 T3G 27 3001051020000 Chip resistor 0402 1KΩ F 1 16W RoHS 1 R206 B1F 28 3001051020000 Chip resistor 0402 1KΩ F 1 16W RoHS 1 R246 B2D 29 3001051020000 Chip resistor 0402 1KΩ F 1 16W RoHS...

Page 24: ...hip resistor 0402 1MΩ F 1 16W RoHS 1 R667 B4I 76 3001051230000 Chip resistor 0402 12KΩ J 1 16W RoHS 1 R222 T2K 77 3001051230000 Chip resistor 0402 12KΩ J 1 16W RoHS 1 R313 T3I 78 3001051230000 Chip resistor 0402 12KΩ J 1 16W RoHS 1 R314 T3J 79 3001051230000 Chip resistor 0402 12KΩ J 1 16W RoHS 1 R315 T3J 80 3001051240000 Chip resistor 0402 120KΩ J 1 16W RoHS 1 R109 T3G 81 3001051240000 Chip resist...

Page 25: ...hip resistor 0402 3 3KΩ J 1 16W RoHS 1 R312 B1I 130 3001053320000 Chip resistor 0402 3 3KΩ J 1 16W RoHS 1 R506 T3E 131 3001053320000 Chip resistor 0402 3 3KΩ J 1 16W RoHS 1 R639 T2D 132 3001053320000 Chip resistor 0402 3 3KΩ J 1 16W RoHS 1 R664 T2D 133 3001053340000 Chip resistor 0402 330KΩ J 1 16W RoHS 1 R266 T4H 134 3001053340000 Chip resistor 0402 330KΩ J 1 16W RoHS 1 R439 B4D 135 3001053340000...

Page 26: ...640000 Chip resistor 0402 560KΩ J 1 16W RoHS 1 R519 T2I 184 3001056810000 Chip resistor 0402 680Ω J 1 16W RoHS 1 R405 T5F 185 3001056810000 Chip resistor 0402 680Ω J 1 16W RoHS 1 R503 T3F 186 3001058210000 Chip resistor 0402 820Ω J 1 16W RoHS 1 R661 T2D 187 3001058230000 Chip resistor 0402 82KΩ J 1 16W RoHS 1 R264 B4H 188 3001058240000 Chip resistor 0402 820KΩ F 1 16W RoHS 1 R211 T3J 189 300105824...

Page 27: ...PF K 50V X7R 0402 RoHS 1 C341 T3I 238 3101051020010 Chip capacitor 1000PF K 50V X7R 0402 RoHS 1 C400 T3F 239 3101051020010 Chip capacitor 1000PF K 50V X7R 0402 RoHS 1 C403 T5F 240 3101051020010 Chip capacitor 1000PF K 50V X7R 0402 RoHS 1 C405 T5F 241 3101051020010 Chip capacitor 1000PF K 50V X7R 0402 RoHS 1 C408 T5F 242 3101051020010 Chip capacitor 1000PF K 50V X7R 0402 RoHS 1 C414 T5E 243 3101051...

Page 28: ...60 Chip capacitor 0 1UF K 16V X7R 0402 RoHS 1 C212 B1F 292 3101051040060 Chip capacitor 0 1UF K 16V X7R 0402 RoHS 1 C217 T2K 293 3101051040060 Chip capacitor 0 1UF K 16V X7R 0402 RoHS 1 C231 B2J 294 3101051040060 Chip capacitor 0 1UF K 16V X7R 0402 RoHS 1 C240 T4K 295 3101051040060 Chip capacitor 0 1UF K 16V X7R 0402 RoHS 1 C249 T2B 296 3101051040060 Chip capacitor 0 1UF K 16V X7R 0402 RoHS 1 C253...

Page 29: ...apacitor 0402 12PF J 50V RoHS 1 C533 T3F 346 3101051200020 Chip capacitor 0402 12PF J 50V RoHS 1 C544 T2H 347 3101051500020 Chip capacitor 15PF J 50V COG 0402 RoHS 1 C111 T5H 348 3101051500020 Chip capacitor 15PF J 50V COG 0402 RoHS 1 C133 T3G 349 3101051500020 Chip capacitor 15PF J 50V COG 0402 RoHS 1 C135 T3H 350 3101051500020 Chip capacitor 15PF J 50V COG 0402 RoHS 1 C413 T4F 351 3101051500020 ...

Page 30: ... capacitor 0402 470PF K 50V RoHS 1 C442 B5C 400 3101054710010 Chip capacitor 0402 470PF K 50V RoHS 1 C512 T3F 401 3101054710010 Chip capacitor 0402 470PF K 50V RoHS 1 C530 T2G 402 3101054710010 Chip capacitor 0402 470PF K 50V RoHS 1 C536 T3F 403 3101054710010 Chip capacitor 0402 470PF K 50V RoHS 1 C538 T2G 404 3101054710010 Chip capacitor 0402 470PF K 50V RoHS 1 C539 T1G 405 3101054710010 Chip cap...

Page 31: ...capacitor 0603 3 5PF C 50V RoHS 1 C122 T3G 456 3210108330000 Bobbin inductor 1206 33nH LQW31HN33NJ03L RoHS 1 L107 T3H 457 3101102260010 Chip capacitor 22uF Z 10V Y5V 1206 RoHS 1 C251 B1D 458 3102992000040 Trimmer capacitor 10pF 55V 25 85 SMD RoHS 1 TC100 T5G 459 3102992000040 Trimmer capacitor 10pF 55V 25 85 SMD RoHS 1 TC101 T4H 460 3101060900010 Chip capacitor 0603 9PF B 50V RoHS 1 C114 T4G 461 3...

Page 32: ...077G0L 1 7 0 8mm RoHS 1 D502 T4D 506 3304040200000 Varactor BB179 SOD523 RoHS 1 D108 T5H 507 3210108390000 Multi layer chip inductor 1206 39nH LQW31 RoHS 1 L104 T5H 508 3307110100070 LED KPT 1608SRC super red RoHS 1 D602 B4A 509 3307110100080 LED KPT 1608SGC super green RoHS 1 D601 B4A 510 3101061010010 Chip capacitor 100PF J 50V C0G 0603 RoHS 1 C429 T4C 511 3401001000080 Transistor 2SA1362 GR TE8...

Page 33: ...or 0603 6 8uH MLF1608 RoHS 1 L102 T4H 561 3213306682000 Multi layer chip inductor 0603 6 8uH MLF1608 RoHS 1 L103 T5H 562 3213306682000 Multi layer chip inductor 0603 6 8uH MLF1608 RoHS 1 L105 T5G 563 3213306682000 Multi layer chip inductor 0603 6 8uH MLF1608 RoHS 1 L106 T3H 564 3213306682000 Multi layer chip inductor 0603 6 8uH MLF1608 RoHS 1 L108 T4H 565 3304060300010 Varactor HVC376BTRF E RoHS 1...

Page 34: ...1 C318 T5J 614 3210106331000 Bobbin inductor 0603 330nH LQW18 RoHS 1 L504 T3F 615 41006101001C0 VHF PCB IT158 1 2T 4L 4P C RoHS 1 616 3001051510010 Chip resistor 0402 150Ω F 1 16W RoHS 1 R105 T5H 617 3399990000260 Diode HSM88ASTL E RoHS 1 D508 T3E 618 3104082260060 Tantalum capacitor 22UF M 10V 55 125 A RoHS 1 C673 B3I 619 3104081060120 Tantalum capacitor 10UF M 16V 55 125 S RoHS 1 C229 B2J 620 31...

Page 35: ...hip resistor 0402 1KΩ F 1 16W RoHS 1 R206 B1F 26 3001051020000 Chip resistor 0402 1KΩ F 1 16W RoHS 1 R246 B2D 27 3001051020000 Chip resistor 0402 1KΩ F 1 16W RoHS 1 R250 B1C 28 3001051020000 Chip resistor 0402 1KΩ F 1 16W RoHS 1 R309 T3I 29 3001051020000 Chip resistor 0402 1KΩ F 1 16W RoHS 1 R310 T4J 30 3001051020000 Chip resistor 0402 1KΩ F 1 16W RoHS 1 R631 B3B 31 3001051020000 Chip resistor 040...

Page 36: ...Chip resistor 0402 1MΩ F 1 16W RoHS 1 R500 T2E 79 3001051050000 Chip resistor 0402 1MΩ F 1 16W RoHS 1 R667 B4I 80 3001051230000 Chip resistor 0402 12KΩ J 1 16W RoHS 1 R222 T2K 81 3001051230000 Chip resistor 0402 12KΩ J 1 16W RoHS 1 R313 T3I 82 3001051230000 Chip resistor 0402 12KΩ J 1 16W RoHS 1 R314 T3J 83 3001051230000 Chip resistor 0402 12KΩ J 1 16W RoHS 1 R315 T3J 84 3001051230000 Chip resisto...

Page 37: ...ip resistor 0402 3 3KΩ J 1 16W RoHS 1 R230 T3K 133 3001053320000 Chip resistor 0402 3 3KΩ J 1 16W RoHS 1 R236 T4K 134 3001053320000 Chip resistor 0402 3 3KΩ J 1 16W RoHS 1 R263 B4H 135 3001053320000 Chip resistor 0402 3 3KΩ J 1 16W RoHS 1 R312 B1I 136 3001053320000 Chip resistor 0402 3 3KΩ J 1 16W RoHS 1 R639 T2D 137 3001053320000 Chip resistor 0402 3 3KΩ J 1 16W RoHS 1 R664 T2D 138 3001053330000 ...

Page 38: ...630000 Chip resistor 0402 56KΩ J 1 16W RoHS 1 R411 T5F 187 3001055640000 Chip resistor 0402 560KΩ J 1 16W RoHS 1 R519 T2I 188 3001056810000 Chip resistor 0402 680Ω J 1 16W RoHS 1 R405 T5F 189 3001056820000 Chip resistor 0402 6 8KΩ J 1 16W RoHS 1 R505 T3E 190 3001058210000 Chip resistor 0402 820Ω J 1 16W RoHS 1 R661 T2D 191 3001058220010 Chip resistor 0402 8 2KΩ F 1 16W RoHS 1 R234 T4K 192 30010582...

Page 39: ...J 241 3101051010030 Chip capacitor 100PF J 50V C0G 0402 RoHS 1 C334 B1I 242 3101051010030 Chip capacitor 100PF J 50V C0G 0402 RoHS 1 C514 T3E 243 3101051010030 Chip capacitor 100PF J 50V C0G 0402 RoHS 1 C669 T4J 244 3101051020010 Chip capacitor 1000PF K 50V X7R 0402 RoHS 1 C105 T5H 245 3101051020010 Chip capacitor 1000PF K 50V X7R 0402 RoHS 1 C106 T4H 246 3101051020010 Chip capacitor 1000PF K 50V ...

Page 40: ...060 Chip capacitor 0 1UF K 16V X7R 0402 RoHS 1 C127 T3G 295 3101051040060 Chip capacitor 0 1UF K 16V X7R 0402 RoHS 1 C143 T3G 296 3101051040060 Chip capacitor 0 1UF K 16V X7R 0402 RoHS 1 C205 T3K 297 3101051040060 Chip capacitor 0 1UF K 16V X7R 0402 RoHS 1 C212 B1F 298 3101051040060 Chip capacitor 0 1UF K 16V X7R 0402 RoHS 1 C217 T2K 299 3101051040060 Chip capacitor 0 1UF K 16V X7R 0402 RoHS 1 C23...

Page 41: ...051200020 Chip capacitor 0402 12PF J 50V RoHS 1 C111 T5H 349 3101051200020 Chip capacitor 0402 12PF J 50V RoHS 1 C502 T3D 350 3101051200020 Chip capacitor 0402 12PF J 50V RoHS 1 C544 T2H 351 3101051500020 Chip capacitor 15PF J 50V COG 0402 RoHS 1 C407 T5E 352 3101051500020 Chip capacitor 15PF J 50V COG 0402 RoHS 1 C503 T3D 353 3101051520000 Chip capacitor 1500PF K 50V X7R 0402 RoHS 1 C224 T2J 354 ...

Page 42: ...pacitor 0402 470PF K 50V RoHS 1 C530 T2G 403 3101054710010 Chip capacitor 0402 470PF K 50V RoHS 1 C536 T3F 404 3101054710010 Chip capacitor 0402 470PF K 50V RoHS 1 C538 T2G 405 3101054710010 Chip capacitor 0402 470PF K 50V RoHS 1 C539 T1G 406 3101054710010 Chip capacitor 0402 470PF K 50V RoHS 1 C601 T2B 407 3101054710010 Chip capacitor 0402 470PF K 50V RoHS 1 C602 T2B 408 3101054710010 Chip capaci...

Page 43: ... 1 C421 T5D 458 3101062200010 Chip capacitor 0603 22PF J 50V RoHS 1 C422 T4D 459 3101062210000 Chip capacitor 0603 220PF J 50V RoHS 1 C450 T4C 460 3101062240000 Chip capacitor 0603 0 22UF K 10V RoHS 1 C100 T4I 461 3101063900000 Chip capacitor 0603 39PF J 50V RoHS 1 C420 T5D 462 3101064790010 Chip capacitor 0603 4 7PF B 50V RoHS 1 C453 T4B 463 3101071050010 Chip capacitor 0805 1UF K 10V RoHS 1 C318...

Page 44: ...z RoHS 1 L604 T2B 508 3231351640000 Air core inductor E2 0 35 1 6 4TL RoHS 1 L450 T4C 509 3231351640000 Air core inductor E2 0 35 1 6 4TL RoHS 1 L451 T4C 510 3231351640000 Air core inductor E2 0 35 1 6 4TL RoHS 1 L452 T4B 511 3231351640000 Air core inductor E2 0 35 1 6 4TL RoHS 1 L454 T5B 512 3231351640000 Air core inductor E2 0 35 1 6 4TL RoHS 1 L500 T4D 513 3231351640000 Air core inductor E2 0 3...

Page 45: ... channel RoHS 1 Q201 B1F 565 3503020000030 FET 2SK1824 T1 A N channel RoHS 1 Q203 T4K 566 3503040000000 FET UPA572T A N channel RoHS 1 Q612 T1E 567 3504990000010 FET Pout 0 8W Gp 14dB RoHS 1 Q402 T5E 568 3515990000000 FET Pout 4W Gp 20dB RoHS 1 Q403 T5E 569 3604002055090 PLL 520MHz Input frequency max RoHS 1 U202 T4I 570 3605008005070 Operational amplifier dual operational RoHS 1 U430 B4D 571 3605...

Page 46: ...tor 2 2UF M 10V 55 125 P RoHS 1 C643 T2E 610 3104072250060 Tantalum capacitor 2 2UF M 10V 55 125 P RoHS 1 C664 T2D 611 3104072250060 Tantalum capacitor 2 2UF M 10V 55 125 P RoHS 1 C665 T2E 612 3104071050070 Tantalum capacitor 1UF M 16V 55 125 P RoHS 1 C264 B4H 613 3303030800040 Switching diode 1SS356 SOD 323 35V 100mA RoHS 1 D401 T4C 614 9900000001340 Lead free solder paste conventional FLY905 T1 ...

Page 47: ...RoHS 1 R698 B4J 24 3001051020000 Chip resistor 0402 1KΩ F 1 16W RoHS 1 R108 T4G 25 3001051020000 Chip resistor 0402 1KΩ F 1 16W RoHS 1 R110 T3G 26 3001051020000 Chip resistor 0402 1KΩ F 1 16W RoHS 1 R206 B1F 27 3001051020000 Chip resistor 0402 1KΩ F 1 16W RoHS 1 R246 B2D 28 3001051020000 Chip resistor 0402 1KΩ F 1 16W RoHS 1 R250 B1C 29 3001051020000 Chip resistor 0402 1KΩ F 1 16W RoHS 1 R309 T3I ...

Page 48: ...16W RoHS 1 R669 B3J 74 3001051040000 Chip resistor 0402 100KΩ F 1 16W RoHS 1 R707 T3K 75 3001051040000 Chip resistor 0402 100KΩ F 1 16W RoHS 1 R708 T3K 76 3001051050000 Chip resistor 0402 1MΩ F 1 16W RoHS 1 R251 B1F 77 3001051050000 Chip resistor 0402 1MΩ F 1 16W RoHS 1 R437 B4D 78 3001051050000 Chip resistor 0402 1MΩ F 1 16W RoHS 1 R500 T2E 79 3001051050000 Chip resistor 0402 1MΩ F 1 16W RoHS 1 R...

Page 49: ...oHS 1 R407 T4F 125 3001053310010 Chip resistor 0402 330Ω J 1 16W RoHS 1 R516 T2G 126 3001053310010 Chip resistor 0402 330Ω J 1 16W RoHS 1 R656 B4A 127 3001053310010 Chip resistor 0402 330Ω J 1 16W RoHS 1 R689 B4A 128 3001053320000 Chip resistor 0402 3 3KΩ J 1 16W RoHS 1 R102 T4I 129 3001053320000 Chip resistor 0402 3 3KΩ J 1 16W RoHS 1 R111 T3G 130 3001053320000 Chip resistor 0402 3 3KΩ J 1 16W Ro...

Page 50: ...W RoHS 1 R642 B2I 176 3001054740000 Chip resistor 0402 470KΩ J 1 16W RoHS 1 R648 B3I 177 3001054790000 Chip resistor 0402 4 7Ω J 1 16W RoHS 1 R249 B1E 178 3001054790000 Chip resistor 0402 4 7Ω J 1 16W RoHS 1 R255 B2E 179 3001055110000 Chip resistor 0402 510Ω J 1 16W RoHS 1 R503 T3F 180 3001055610000 Chip resistor 0402 560Ω J 1 16W RoHS 1 R100 T4I 181 3001055610000 Chip resistor 0402 560Ω J 1 16W R...

Page 51: ...7PF B 50V COG 0402 RoHS 1 C518 T2F 228 3101050700010 Chip capacitor 7PF B 50V COG 0402 RoHS 1 C528 T2F 229 3101050800000 Chip capacitor 0402 8PF B 50V RoHS 1 C645 B5I 230 3101050800000 Chip capacitor 0402 8PF B 50V RoHS 1 C691 B4I 231 3101051000020 Chip capacitor 10PF J 50V C0G 0402 RoHS 1 C111 T5H 232 3101051000020 Chip capacitor 10PF J 50V C0G 0402 RoHS 1 C132 T3G 233 3101051000020 Chip capacito...

Page 52: ...oHS 1 C686 B2I 278 3101051020010 Chip capacitor 1000PF K 50V X7R 0402 RoHS 1 C689 B4I 279 3101051030020 Chip capacitor 0 01UF K 25V X7R 0402 RoHS 1 C237 T3K 280 3101051030020 Chip capacitor 0 01UF K 25V X7R 0402 RoHS 1 C259 B2E 281 3101051030020 Chip capacitor 0 01UF K 25V X7R 0402 RoHS 1 C274 B1F 282 3101051030020 Chip capacitor 0 01UF K 25V X7R 0402 RoHS 1 C300 T3I 283 3101051030020 Chip capacit...

Page 53: ... X7R 0402 RoHS 1 C683 B2I 329 3101051040060 Chip capacitor 0 1UF K 16V X7R 0402 RoHS 1 C687 B5I 330 3101051050000 Chip capacitor 1UF K 6 3V X5R 0402 RoHS 1 C213 B1F 331 3101051050000 Chip capacitor 1UF K 6 3V X5R 0402 RoHS 1 C216 T1K 332 3101051050000 Chip capacitor 1UF K 6 3V X5R 0402 RoHS 1 C218 T2J 333 3101051050000 Chip capacitor 1UF K 6 3V X5R 0402 RoHS 1 C226 T2K 334 3101051050000 Chip capac...

Page 54: ...tor 0402 470PF K 50V RoHS 1 C316 T4J 380 3101054710010 Chip capacitor 0402 470PF K 50V RoHS 1 C335 T4I 381 3101054710010 Chip capacitor 0402 470PF K 50V RoHS 1 C337 T3I 382 3101054710010 Chip capacitor 0402 470PF K 50V RoHS 1 C342 T3I 383 3101054710010 Chip capacitor 0402 470PF K 50V RoHS 1 C401 T4F 384 3101054710010 Chip capacitor 0402 470PF K 50V RoHS 1 C402 T4F 385 3101054710010 Chip capacitor ...

Page 55: ...capacitor 0603 1PF B 50V RoHS 1 C451 T3B 431 3101060100010 Chip capacitor 0603 1PF B 50V RoHS 1 C452 T4C 432 3101060100010 Chip capacitor 0603 1PF B 50V RoHS 1 C456 T4C 433 3101060100010 Chip capacitor 0603 1PF B 50V RoHS 1 C459 T5C 434 3101060300010 Chip capacitor 0603 3PF B 50V RoHS 1 C113 T4H 435 3101060300010 Chip capacitor 0603 3PF B 50V RoHS 1 C115 T4G 436 3101060300010 Chip capacitor 0603 3...

Page 56: ...RoHs 1 L115 T3G 483 3210305390000 Multi layer chip inductor 0402 39nH LQG15 RoHs 1 L111 T4G 484 3210306101000 Multi layer chip inductor 0603 100nH LQG18 RoHS 1 L504 T3F 485 3210306220000 Multi layer chip inductor 0603 22nH LQG18 RoHS 1 L401 T4F 486 3210306220000 Multi layer chip inductor 0603 22nH LQG18 RoHS 1 L503 T3E 487 3210306220000 Multi layer chip inductor 0603 22nH LQG18 RoHS 1 L505 T2F 488...

Page 57: ...ching diode 1SS356 SOD 323 35V 100mA RoHS 1 D401 T4C 532 3303020100080 Switching diode MA2S077G0L 1 7 0 8mm RoHS 1 D400 T3F 533 3303020100080 Switching diode MA2S077G0L 1 7 0 8mm RoHS 1 D500 T3F 534 3303020100080 Switching diode MA2S077G0L 1 7 0 8mm RoHS 1 D501 T3D 535 3303020100080 Switching diode MA2S077G0L 1 7 0 8mm RoHS 1 D502 T3D 536 3304040200000 Varactor BB179 SOD523 RoHS 1 D104 T4H 537 330...

Page 58: ...ifier dual operational RoHS 1 U430 B4D 585 3605017005540 Operational amplifier 1 7V dual operational RoHS 1 U201 B2E 586 3608015000000 Power management IC voltage regulator 5V RoHS 1 U606 B3I 587 3609016000000 RF IF demodulator AN29160AA RoHS 1 U200 T3J 588 3610007000020 MCU 16M two CLK RoHS 1 U605 B4J 589 3612031004440 Memory 64K RoHS 1 U609 B3K 590 3619006005220 Low voltage detector 0 7v 10v RoH...

Page 59: ... resistor 0402 51KΩ F 1 16W RoHS 1 R235 T4K 615 3001055620000 Chip resistor 0402 5 6KΩ J 1 16W RoHS 1 R261 B4I 616 3101052240010 Chip capacitor 0402 0 22UF Z 10V RoHS 1 C202 T1F 617 3101055630000 Chip capacitor 0402 0 056UF K 10V RoHS 1 C236 T3K 618 3101061040010 Chip capacitor 0603 0 1UF K 16V RoHS 1 C100 T4I 619 3104242250000 Tantalum capacitor 2 2UF K 16V 55 125 A RoHS 1 C101 T4I 620 3104274760...

Page 60: ... Chip resistor 0402 1KΩ F 1 16W RoHS 1 R108 T4G 26 3001051020000 Chip resistor 0402 1KΩ F 1 16W RoHS 1 R110 T3G 27 3001051020000 Chip resistor 0402 1KΩ F 1 16W RoHS 1 R206 B1F 28 3001051020000 Chip resistor 0402 1KΩ F 1 16W RoHS 1 R246 B2D 29 3001051020000 Chip resistor 0402 1KΩ F 1 16W RoHS 1 R250 B1C 30 3001051020000 Chip resistor 0402 1KΩ F 1 16W RoHS 1 R309 T3I 31 3001051020000 Chip resistor 0...

Page 61: ...0000 Chip resistor 0402 1MΩ F 1 16W RoHS 1 R251 B1F 79 3001051050000 Chip resistor 0402 1MΩ F 1 16W RoHS 1 R437 B4D 80 3001051050000 Chip resistor 0402 1MΩ F 1 16W RoHS 1 R500 T2E 81 3001051050000 Chip resistor 0402 1MΩ F 1 16W RoHS 1 R667 B4I 82 3001051230000 Chip resistor 0402 12KΩ J 1 16W RoHS 1 R222 T2K 83 3001051230000 Chip resistor 0402 12KΩ J 1 16W RoHS 1 R313 T3I 84 3001051230000 Chip resi...

Page 62: ...Chip resistor 0402 3 3KΩ J 1 16W RoHS 1 R263 B4H 133 3001053320000 Chip resistor 0402 3 3KΩ J 1 16W RoHS 1 R312 B1I 134 3001053320000 Chip resistor 0402 3 3KΩ J 1 16W RoHS 1 R639 T2D 135 3001053320000 Chip resistor 0402 3 3KΩ J 1 16W RoHS 1 R664 T2D 136 3001053330000 Chip resistor 0402 33KΩ F 1 16W RoHS 1 R417 T5E 137 3001053340000 Chip resistor 0402 330KΩ J 1 16W RoHS 1 R439 B4D 138 3001053340000...

Page 63: ...5630000 Chip resistor 0402 56KΩ J 1 16W RoHS 1 R411 T5F 187 3001055640000 Chip resistor 0402 560KΩ J 1 16W RoHS 1 R519 T2I 188 3001056810000 Chip resistor 0402 680Ω J 1 16W RoHS 1 R405 T5F 189 3001056820000 Chip resistor 0402 6 8KΩ J 1 16W RoHS 1 R505 T3E 190 3001056840000 Chip resistor 0402 680KΩ J 1 16W RoHS 1 R211 T3J 191 3001056840000 Chip resistor 0402 680KΩ J 1 16W RoHS 1 R217 T2J 192 300105...

Page 64: ...241 3101051000020 Chip capacitor 10PF J 50V C0G 0402 RoHS 1 C321 T5I 242 3101051000020 Chip capacitor 10PF J 50V C0G 0402 RoHS 1 C322 T5I 243 3101051000020 Chip capacitor 10PF J 50V C0G 0402 RoHS 1 C435 B5D 244 3101051000020 Chip capacitor 10PF J 50V C0G 0402 RoHS 1 C541 T2G 245 3101051010030 Chip capacitor 100PF J 50V C0G 0402 RoHS 1 C107 T5I 246 3101051010030 Chip capacitor 100PF J 50V C0G 0402 ...

Page 65: ...20 Chip capacitor 0 01UF K 25V X7R 0402 RoHS 1 C540 T1G 295 3101051030020 Chip capacitor 0 01UF K 25V X7R 0402 RoHS 1 C542 T2H 296 3101051030020 Chip capacitor 0 01UF K 25V X7R 0402 RoHS 1 C546 T2I 297 3101051030020 Chip capacitor 0 01UF K 25V X7R 0402 RoHS 1 C547 T2I 298 3101051030020 Chip capacitor 0 01UF K 25V X7R 0402 RoHS 1 C656 B4K 299 3101051030020 Chip capacitor 0 01UF K 25V X7R 0402 RoHS ...

Page 66: ...050000 Chip capacitor 1UF K 6 3V X5R 0402 RoHS 1 C440 B4J 349 3101051050000 Chip capacitor 1UF K 6 3V X5R 0402 RoHS 1 C441 B4K 350 3101051050000 Chip capacitor 1UF K 6 3V X5R 0402 RoHS 1 C446 B5E 351 3101051050000 Chip capacitor 1UF K 6 3V X5R 0402 RoHS 1 C678 B4K 352 3101051050000 Chip capacitor 1UF K 6 3V X5R 0402 RoHS 1 C690 B3I 353 3101051050000 Chip capacitor 1UF K 6 3V X5R 0402 RoHS 1 C692 T...

Page 67: ...p capacitor 0402 470PF K 50V RoHS 1 C512 T3F 403 3101054710010 Chip capacitor 0402 470PF K 50V RoHS 1 C530 T2G 404 3101054710010 Chip capacitor 0402 470PF K 50V RoHS 1 C536 T3F 405 3101054710010 Chip capacitor 0402 470PF K 50V RoHS 1 C538 T2G 406 3101054710010 Chip capacitor 0402 470PF K 50V RoHS 1 C539 T1G 407 3101054710010 Chip capacitor 0402 470PF K 50V RoHS 1 C601 T2B 408 3101054710010 Chip ca...

Page 68: ...50V RoHS 1 C428 T5C 458 3101061590010 Chip capacitor 0603 1 5PF B 50V RoHS 1 C454 T4C 459 3101061590010 Chip capacitor 0603 1 5PF B 50V RoHS 1 C457 T4B 460 3101062240000 Chip capacitor 0603 0 22UF K 10V RoHS 1 C100 T4I 461 3101062700010 Chip capacitor 0603 27PF J 50V RoHS 1 C429 T4C 462 3101064790010 Chip capacitor 0603 4 7PF B 50V RoHS 1 C453 T4B 463 3101071050010 Chip capacitor 0805 1UF K 10V Ro...

Page 69: ...0 Chip ferrite bead 0805 220Ω 25 100MHz RoHS 1 L404 T4E 509 3221507600000 Chip ferrite bead 0805 60Ω 25 100MHz RoHS 1 L407 T4D 510 3221507600000 Chip ferrite bead 0805 60Ω 25 100MHz RoHS 1 L604 T2B 511 3231351440000 Air core inductor E2 0 35 1 4 4TR RoHS 1 L507 T2F 512 3231351640000 Air core inductor E2 0 35 1 6 4TL RoHS 1 L450 T4C 513 3231351640000 Air core inductor E2 0 35 1 6 4TL RoHS 1 L451 T4...

Page 70: ...000180 Transistor UFMMT717 PNP SOT23 RoHS 1 Q610 T2E 565 3499000000180 Transistor UFMMT717 PNP SOT23 RoHS 1 Q611 T2D 566 3501020000030 FET 3SK318YB TL E Q N channel RoHS 1 Q501 T2G 567 3503010000010 FET 2SJ243 T1 A P channel RoHS 1 Q653 T4G 568 3503020000030 FET 2SK1824 T1 A N channel RoHS 1 Q201 B1F 569 3503020000030 FET 2SK1824 T1 A N channel RoHS 1 Q203 T4K 570 3503040000000 FET UPA572T A N cha...

Page 71: ...0 Tantalum capacitor 1UF M 16V 55 125 P RoHS 1 C264 B4H 607 9900000001340 Lead free solder paste conventional FLY905 T1 RoHS 1 608 3104081560050 Tantalum capacitor 15UF M 10V 55 125 S RoHS 1 C652 T5G 609 3104086850040 Tantalum capacitor 6 8UF M 10V 55 125 A RoHS 1 C101 T4I 610 3303030300000 Schottky barrier diode SOT 323 RoHS 1 D651 T3K 611 3401002000150 Transistor NPN RoHS 1 Q656 T3K 612 30010522...

Page 72: ...nd EEPROM must be initialized by the profiles recording with test framework initializing with programming software or by wired clone If any adjustment is required connect the programming cable and perform PC adjustment in the adjustment mode 2 Radio Adjustment a Rotate the Channel Selector knob to CH1 and hold down PTT and SK2 over two seconds while powering the radio on Then the LED glows orange ...

Page 73: ... Section TC 618 626 Adjustment Item Channel Adjustable Frequency Wide Bandwidth Narrow Bandwidth 1 To switch between Tx group and Rx group Rotate the Channel Selector knob to CH16 and long press PTT to switch between Tx group and Rx group If the LED glows red Tx group is entered if the LED glows green Rx group is entered The LED solidly glows red for adjustment of Tx group items The LED solidly gl...

Page 74: ...ctor knob to CH2 and press PTT to transmit Communication Test Set Antenna VR300 Adjust VR300 with ceramic tuning tool to control the center frequency within the error range 150Hz Rotate the Channel Selector knob to CH3 and press PTT to transmit Adjust TC100 with ceramic tuning tool until the lock voltage meets the requirements 2 8 2 9V Tx VCO Lock Voltage Rotate the Channel Selector knob to CH1 an...

Page 75: ...n Test Instrument Test point Part Method Specifications Remarks Tx Frequency Tolerance Rotate the Channel Selector knob to CH2 and press PTT to transmit Communication Test Set Antenna VR300 Adjust VR300 with ceramic tuning tool to control the center frequency within the error range 150Hz Rotate the Channel Selector knob to CH1 and press PTT to transmit Adjust TC100 with ceramic tuning tool until t...

Page 76: ...dwidth Rotate the Channel Selector knob to CH4 CH5 and CH6 and press PTT to transmit Communication Test Set BPF 0 3 KHz 3KHz AF 1KHz Antenna Earpiece Jack Adjust the strength of the audio output signal of communication test set to ensure that the deviation value reaches 1 5KHz 8 18mV 2 Adjustment in the Adjustment Mode Note Make sure the antenna or load is connected before adjustment Test Adjustme...

Page 77: ...tch between frequencies circularly and long press PTT to switch between wide bandwidth and narrow bandwidth VR260 Check Rotate the Channel Selector knob to CH5 and press PTT to enable this function Select the wide bandwidth and low frequency Wide Bandwidth Press PTT to switch between frequencies medium low medium medium high and high Adjust VR601 with ceramic tuning tool to check each frequency Ap...

Page 78: ...perform fine tuning until the CTCSS deviation meets the requirements 300 500Hz Rotate the Channel Selector knob to CH9 and select VOX Level 1 Press SK1 or SK2 to enable this function Communication Test Set BPF 20Hz 15kHz AF 1kHz 10mV Apply SK1 or SK2 to perform adjustment and rotate the Channel Selector knob to save it after one point adjustment Rotate the Channel Selector knob to CH10 and select ...

Page 79: ...ne sounds to indicate transmission inhibition Rotate the Channel Selector knob to CH8 and select the low frequency RX Sensitivity Bandpass Short press PTT to switch between frequencies Communication Test Set SSG 119dBm MOD 1KHz DEV 3 0KHz Filter 0 3 3KHz Antenna Earpiece Jack SK1 SK2 Check the bandpass waveform Apply SK1 or SK2 to perform adjustment and rotate the Channel Selector knob to save it ...

Page 80: ...munication Test Set SSG 114dBm MOD 1KHz DEV 3KHz Filter 0 3 3KHz Antenna Earpiece Jack SK1 SK2 Adjust the SSG output signal to squelch level Rotate the Channel Selector Knob to save the value after five point adjustment Squelch level 9 114 1dB Communication Test Set SSG 121dBm MOD 1KHz DEV 1 5KHz Filter 0 3 3KHz Squelch level 1 121 1dB Communication Test Set SSG 118dBm MOD 1KHz DEV 1 5KHz Filter 0...

Page 81: ...de bandwidth and low frequency Short press PTT to switch between frequencies Communication Test Set SSG 121dBm MOD 1KHz DEV 3KHz Filter 0 3 3KHz Squelch level 5 121 1dB Squelch Off Wide Bandwidth Rotate the Channel Selector knob to CH6 and set to SQL Off 6 Press SK1 or SK2 to enable this function and select the wide bandwidth and low frequency Short press PTT to switch between frequencies Communic...

Page 82: ...e the value after five point adjustment Squelch level 9 115 1dB RX Low Voltage Threshold Digital Voltmeter Power Supply Port Power Supply Adjust the output voltage and check the emergency level red LED flashes and alert tone sounds 6 50V Appendix 1 Reference Value for TC 618 626 Source Radio Wide Bandwidth Narrow Bandwidth Test Item Freq 1 Freq 2 Freq 3 Freq 4 Freq 5 Freq 1 Freq 2 Freq 3 Freq 4 Fr...

Page 83: ...ix 2 Reference Value for TC 618 626 Battery Strength Test in Tx status Green LED glows 70 100 7 35V 18 Minutes Orange LED glows 50 70 7 15V 7 35V 12 Minutes Red LED glows 30 50 7 00V 7 15V 12 Minutes Red LED flashes 30 6 20V 7 00V 18 Minutes Red LED flashes Alarm sounds 5 80V 6 20V Power off 5 80V Test in Rx Standby status or by the battery test button press Green LED glows 70 100 7 55V 18 Minutes...

Page 84: ...TC 618 626 Service Manual 83 Troubleshooting Flow Chart Transmit Circuit ...

Page 85: ... ICU200 outputs signals normally The demodulation parts work normally The IF and mixer circuits work normally The RF mixer circuit works normally Change the Rx frequency Change the Rx SQL level Replace the Rx LED D601 Change the Rx signaling Replace the speaker Check the audio amplifier circuit Replace the Volume Control knob Check the audio processing circuit Check and replace CD300 and CF300 Che...

Page 86: ...TC 618 626 Service Manual 85 MCU ...

Page 87: ...y tab and the slot in the radio s upper body Figure 1 Figure 2 Attaching the Battery Push the battery close to the aluminum chassis under the belt clip in the direction as shown in Figure 3 Note Make sure the battery tab is fully inserted into the radio s slot Press the battery bottom gently until a click is heard Note If the battery latch is loose or unsecured please take it down and attach it ag...

Page 88: ... chassis Then pull the aluminum chassis backwards and take it out Remove the rear cover as shown in Figure 6 Figure 6 See Figure 7 for the disassembled parts Figure 7 Assembling the Aluminum Chassis Refer to Removing the Aluminum Chassis and apply the converse procedures ...

Page 89: ... the antenna counter clockwise until you can remove it See Figure 8 Attaching the Antenna Align the threaded end of the antenna with the antenna connector located on the radio s top side Turn the antenna clockwise to fasten it See Figure 9 Figure 8 Figure 9 ...

Page 90: ...TC 618 626 Service Manual 89 Exploded View TC 618 5 7 8 9 13 16 12 11 24 20 22 19 18 3 4 2 44 42 39 41 48 47 32 34 35 28 27 26 38 17 30 31 36 15 14 33 45 43 6 1 46 37 23 29 25 10 40 21 ...

Page 91: ...TC 618 626 Service Manual 90 TC 626 ...

Page 92: ...tary switch RoHS 1 14 4100610300000 PTT key 00 RoHS 1 15 7300032000000 Metal dome for PTT key 00 RoHS 1 16 5205000001000 Battery connector black 00 RoHS 1 17 6100314000000 Waterproof ring for battery connector orange 00 RoHS 1 18 6100335000000 O_RING for antenna red 00 RoHS 1 19 7102504000300 Machine screw 00 RoHS 2 20 4400100008000 SMA connector RoHS 1 21 7103006001000 Machine screw 00 RoHS 2 22 ...

Page 93: ... Description Qty PCS 1 7102003500100 Self tapping screw 00 RoHS 2 2 6000855000000 Accessory jack cover black 00 RoHS 1 3 6300068001000 Decorative sheet zinc alloy 00 RoHS 1 4 6000700000000 Earpiece cover stopper white 00 RoHS 1 5 6000886000000 Ultrasonic front case black dark green 00 RoHS 1 6 5001210000320 Speaker RoHS 1 7 7400222000000 Waterproof Mic net 00 RoHS 1 8 7400217100000 Mic pad 00 RoHS...

Page 94: ...6000853000000 Rear cover of radio unit black 00 RoHS 1 32 4304030000010 Gray code rotary switch RoHS 1 33 4302020000140 Volume control knob RoHS 1 34 6100334000000 O ring for Channel Selector knob red 00 RoHS 2 35 7207002200200 Nut 00 RoHS 2 36 6000854000000 Light guide 00 RoHS 1 37 6100312000010 Silicone rubber PTT key black 01 RoHS 1 38 6000842100000 Plastic PTT key black 00 RoHS 1 39 6201066000...

Page 95: ...TC 618 626 Service Manual 94 Packing TC 618 as the example ...

Page 96: ......

Page 97: ......

Page 98: ......

Page 99: ......

Page 100: ...39dBm Q400 2SC5108 1 2 3 27dBm LPF 2SK3475 Q402 2 1 3 15dBm 8dBm 450mVrms stimulator power AMP Mic Amp Mic Mute AF HPF LMT SF Amp AN29160 51 40 MICROPHONE 47K VR200 C112 AF AMP TDA2822 150mVrms 26dBm D400 D500 SW Q401 2SK4988 1 2 3 45dBm Q104 1 2 3 16Ω IW Q500 AT41511 RQA0002 Q403 2 1 3 attenuator step1to23 buffer Q501 3SK318 3 2 4 1 Q100 2SK508NV BPF BPF 38 85M C 3dBm C130 C141 VCO C400 C405 C402...

Page 101: ... 1 3 U609 IFAMP2 5th LPF AF HPF CLK PE VCC_BAR T R SW 5th HPF signalling output PLLCLK PLLDATA PLLEN Reset mic MIC Pre Emphasis Q401 2SC4988 1 2 3 Vin V S S Vout Q101 2SK508NV IFAmp1 SW D102 To MCU CF300 450KHz 4 5K OUT IN IC Q5 1 2 3 MON BAT MATCH Q402 VREF 38 85MHZ 7 5V ANTENNA TX De Emphasis 2SK3475 2 1 3 LATCH BUFFER U606 Q6 1 2 3 L604 601s 1stIF BPF AF mute SAVE Q400 2SC5108 1 2 3 FMMT717 SPV...

Page 102: ... 0 LPF D104 RQA0002 2 1 3 U609 IFAMP2 5th LPF AF HPF CLK PE VCC_BAR D105 T R SW APC TUNE 5th HPF signalling output PLLCLK PLLDATA PLLEN Reset mic MIC Pre Emphasis Q401 2SC4988 1 2 3 Vin V SS Vout Q101 2SK508NV IFAmp1 SW D102 To MCU CF300 450KHz 4 5K OUT IN IC Q5 1 2 3 MON BAT D106 MATCH Q402 VREF 38 85MHZ ANTENNA 7 5V TX De Emphasis 2SK3475 2 1 3 TUNE BPF LATCH BUFFER U606 L604 601s Q6 1 2 3 1stIF...

Page 103: ... 1U R234 8 2K R234 8 2K C245 22P C245 22P R217 390K R217 390K C255 0 1U C255 0 1U R315 12K R315 12K R222 12K R222 12K C233 1500P C233 1500P RN1 1K 4 RN1 1K 4 1 2 3 4 5 6 7 8 R208 100K R208 100K R214 22k R214 22k C256 0 1U C256 0 1U D203 EDZ6 8B D203 EDZ6 8B C301 1U C301 1U C320 1000P C320 1000P C209 NC C209 NC C319 NC C319 NC C212 0 1U C212 0 1U R249 4 7 R249 4 7 R306 150K R306 150K C308 1U C308 1...

Page 104: ...5 2 2U 10V C665 2 2U 10V Q609 UMG3N Q609 UMG3N R694 1K R694 1K Q610 FMMT717 Q610 FMMT717 1 2 3 R660 100 R660 100 Q614 DTC114EE Q614 DTC114EE 2 3 1 C646 1n C646 1n R690 47K R690 47K C664 2 2U 10V C664 2 2U 10V R703 47K R703 47K Q611 FMMT717 Q611 FMMT717 1 2 3 R659 2 7K R659 2 7K R658 1K R658 1K BL BL D601 GREEN D601 GREEN 1 2 C683 0 1u C683 0 1u Q615 DTC114EE Q615 DTC114EE 2 3 1 VR601 68K VR601 68K...

Page 105: ...0 01U C508 12P C508 12P Q104 2SC5108 Q104 2SC5108 R100 560 R100 560 D503 HVC362 D503 HVC362 2 1 C142 470P C142 470P R266 150K R266 150K Q403 RQA0002 Q403 RQA0002 L106 6 8U L106 6 8U Q431 DTA114YE Q431 DTA114YE L108 6 8U L108 6 8U L405 68nH L405 68nH C509 1000P C509 1000P R652 100K R652 100K R650 1K R650 1K Q500 AT41511 Q500 AT41511 C412 220P C412 220P C432 470P C432 470P C102 0 1U 20V C102 0 1U 20...

Page 106: ...5K R219 56K R219 56K C226 1U C226 1U C337 470P C337 470P L303 330NH L303 330NH C341 1000 P C341 1000 P C217 0 1U C217 0 1U R247 10 R247 10 U201 TDA2822D U201 TDA2822D O1 1 VCC 2 O2 3 GND 4 2IN 5 2IN 6 IN 7 IN 8 D210 EDZ6 8B D210 EDZ6 8B R229 120K R229 120K C255 0 1U C255 0 1U R237 47K R237 47K C343 56P C343 56P C259 0 01U C259 0 01U C238 0 012U C238 0 012U C252 10U 16V C252 10U 16V Q300 DTA114EE Q...

Page 107: ...G3N L604 600sg L604 600sg R632 1K R632 1K Q613 UMG3N Q613 UMG3N C681 0 01u C681 0 01u C642 0 1u C642 0 1u C662 0 01U C662 0 01U C685 1000P C685 1000P R701 330K R701 330K R647 100K R647 100K R661 820 R661 820 C666 1000P C666 1000P R698 100 R698 100 C645 8P C645 8P R656 330 R656 330 R636 47K R636 47K C661 1000p C661 1000p C658 1000p C658 1000p C682 47u 16V C682 47u 16V R697 100 R697 100 C684 1000p C...

Page 108: ... 22U L510 1uH L510 1uH Q650 2SC5343 Q650 2SC5343 2 3 1 C445 470P C445 470P R403 330 R403 330 C457 1 5p C457 1 5p L505 22nH L505 22nH D501 MA2S077 D501 MA2S077 1 2 C431 10u 16V C431 10u 16V C650 0 1U C650 0 1U C515 0 1u C515 0 1u R651 4 7K R651 4 7K R109 120K R109 120K C103 NC C103 NC C102 0 33U C102 0 33U R520 2 7k R520 2 7k L509 330nH L509 330nH R441 4 7K R441 4 7K C415 0 1U C415 0 1U C401 470P C...

Page 109: ...C 618 119mm x 55mm x 33mm TC 626 117mm x 54mm x 31mm Weight with antenna battery TC 618 270g TC 626 275g Frequency Stability 2 5 ppm Receiver Sensitivity 0 25 0 28μV Selectivity 70dB 60dB Intermodulation 65dB Spurious Response Rejection 70dB Rated Audio Power Output 800mW Rated Audio Distortion 5 800mW Transmitter RF Power Output 5W 2W Spurious and Harmonics 36dBm Frequency 1GHz 30dBm Frequency 1G...

Page 110: ...o change without notice due to continuous technology development Changes which may occur after publication are highlighted by Revision History contained in Service Manual No part of this manual may be copied reproduced translated stored in a retrievable system distributed or transmitted in any form or by any means electronic or mechanical for any purpose without the express written permission of H...

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