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TC-320 RDA Service manual

1. 50 Service Manual 10 Exploded View Exploded View if L d V M M NN NI VAN d NJ Xy M 91 Parts List 2 Service Manual 11 Parts List 2 Jer ee DT Dr rosa oo Junta mana IM PORON pad for battery thick cover EN n ae TT 52 Service Manual Parts List 2 7000181000000 Fender washer open 7102505000200 Machine screw M2 5 4 8mm iN ON 31 7101004020200 Self tapping screw 1 9 4 0mm EI Jamnan momen TI 25 0704020100 Self tapping screw 1 7 4 0mm ES ES 93 Parts List 2 Service Manual 6100111000010 Silicone rubber MIC cover 7400077000000 MIC Net Note Parts that are not marked with part number may vary with radio freguency band 54 Service Manual Packing Guide 12 Packing Guide Owner s Manual UIN Hee poslje W d N zbi Re J G 4 Po Vla Gift Box 55 13 PCB View PCB View Top Layer SWNa9MA O sara B 41003203000N0 O C133 m uz TC 320 Mainboard Ver N P N 2011 11 25 BE He Pada 2990 C305 C304 E S EL n zoea O axy C420 S N R442 S O su rt C452 to El Ry a Bal eE Lov AE jo CORE tez EA Jana Ej He Z 3H EC Ba E Sp IDRA E Levy E p Lorn S Ed poro z o o He Ga per 94
2. IC IN M Synthesizer Figure 2 11 Circuit Description Service Manual The reference clock signal of RDA chip is provided by 26MHZ crystal oscillator The block diagram is DAC given below DSP Core Audio filter Sub CH filter FM Modem AFC loop Switch MIC ADC 8 d P PA driver VCO LDO GPIO OT DVDD RSSI aN MCU AVDD Syntheizer KN e N RDA 1846 i AB XTAL After entering RDA chip via MIC the voice signal will undergo A D conversion to get digital signal which will be delivered to DSP for further processing such as filtering amplification amplitude limiting and pre emphasizing Then the resulting voice signal is modulated to the internal VCO and output after being amplified by the driver amplifier At the RX end the received RF signal will go to LNA for amplification first and then go to IF demodulation circuit to get demodulated voice signal After gain control such signal is converted into digital signal which will enter DSP for further processing such as filtering amplification and de emphasizing The function of RDA is subject to MCU U622 and its reference clock signal is from 26MHZ crystal osci
3. ess mr B36 2001051010000 hip resistor 1000 J GW o40a RoHS rasa tae 556 2001051010000 Chi resistor 100 1 GW 0402 RoHS 1 285 R139 B3G 3001051010000 Chip resistor 1000 J 1 16W 0402 RoHS 286 R141 B4G 3001051010000 Chip resistor 1000 J 1 16W 0402 RoHS 287 R142 B3F 3001051010000 Chip resistor 1000 J 1 16W 0402 RoHS as RIMA Bar 001054720000 Chi resistor 4 J 16w menas 11 206 Rei Tar 2001051040000 Chi resistor 1000 F mew 0402 Ros TO Laer Raw Tar 3001051020000 Chi resistor IKO Few 0402 RoHS 11 298 R215 T2F 3001052230010 Chip resistor 22KQ J 1 16W 0402 HK 27 Parts List 1 Service Manual No Ref No Print No Part No Description Qty Chip resistor 2700 J 1 10W 0603 RoHS Chip resistor 0 390 J 1 4W 1206 RoHS Chip resistor 150KQ D 1 10W 0603 RoHS Chip resistor 100KQ D 1 10W 0603 RoHS Multi layer chip inductor 2 2nH S 300mA 0 120hm Q 8 28 gt a Na lt gt MI N Service Manual Parts List 1 No Ref No Print No Part No Description Qty sae rte B2E s001055100020 HH Multi layer chip inductor 0402 22nH Q min 8 RoHS 1 48 msi O BE 3001050000000 chip resist 00 I ING 0402 RoHS ass REM Bae 3001081010000 chip resistor 1000 NGN 0462 RoHS 1 ass Reis BAH 3001086730000 chip restr 47K0 J VW 0402 ROHS 1 357 R617 B4H 3001054730000 Chip resistor 47KQ
4. connected press PTT of the Factory Clone If error data clone occurs the source radio to begin cloning Status Indicator will flash orange In this situation press any key other than the Power On Off Key to turn it off Once cloning is completed the Status Indicator will solidly glow green The Status Indicator flashes red when it indicates low voltage which will not be responded in the clone mode Product Controls Service Manual e The Status Indicator glows green during cloning Status of the target radio in Wired Clone Mode e The green Status Indicator goes out once cloning is completed When the radio is turned on a power on alert tone sounds and the Status Indicator flashes orange once Power On to enter User Mode When the radio is currently on a blank channel it will sound beep tones continuously When the radio is turned on a power off alert Powering off tone will sound The Status Indicator will flash red and a low pitched Low Battery Alert tone will sound every 10 seconds The Status Indicator will glow red during transmitting e When the TOT timer expires the radio will sound Transmitting beep tone continuously e A TOT pre alert tone will sound before the TOT timer expires The Status Indicator will glow green when carrier is Receiving present The Status Indicator will flash green once per second during scanning S Scan Start Alert programmable by the dealer canning
5. 3221506601000 Ferite bead 6000 100MHz 425 500mA 0603 RoHS 1 _ 256 1608 TSE 3221507221000 Ferrite bead 2200 100MHz 25 2000mA 0805 RoHS 1 26 Service Manual Parts List 1 No Ref No Print No Part No Description Qty 0103 TEO RR Z vr dd dd FI Q104 E MURIS dd ed d 259 0201 3411001000000 P 50V 150mA 70 700 SOT 523 1 0202 TE SE TE ST O VDS 10V ID 500mA VGS th 0 7V SC 62 262 0403 Boc 9504990000040 PA MOSFET 10uA 25V 10vA 7 2V 7W SMD RoHS 1 VDS 30V 1D 100MA VGStth 1 9V SC 75 269 0602 tz 3403660000000 Transistor PNP NPN SOV SOV ROHS 1 EGE JE NF X Transistor NPN 2 50V 100mA 250 SC 88A RoHS R101 3001050000000 Chip resistor 00 J 1 16W 0402 RoHS 1 ETA RGS s 2001054720000 Gi resor AKO J ov 402 pon O ars us BaF 2001080000000 chi resistor oa ew 0402 RoHS TO ars Rus Ta 3001086730000 chip resistor area J mew mesne 11 276 R130 T3G 3001054730000 Chip resistor 47KO J 1 16W 0402 mm 277 R131 T3G 3001051010000 Chip resistor 1000 J 1 16W 0402 RoHS 278 R132 T3G 3001051010000 Chip resistor 1000 J 1 16W 0402 RoHS are rss BIG 2001051010000 chi resistor 100 1 mew 0402 RoHS 1 aso ra BIG 2001051010000 Chi resistor 100 1 1 18 0402 RoHS 1 asi Riss B36 3001051010000 chip resistor 1000 NGN 0402 RoHS 1 252 ms 836 30010851010000 Crip resistor 000 J 1 8W o40a Ros 1
6. C519 47p 1000p R524 R525 NC NC Service Manual Specifications m e 2 D O O O ct O 5 0 General Frequency Range 400 470MHz Channel Capacity Channel Spacing 25 KHz 12 5KHz Operating Voltage 3 8V DC Battery 1650mAh Battery Life 5 5 90 Duty Cycle gt 10hours Operating Temperature 20 C 55 C Dimensions HxWxD with standard battery without 100X48X31mm antenna Weight with standard antenna 8 145 10g battery Freguency Stability 2 5ppm Receiver Sensitivity lt 0 224uV Adjacent Channel Selectivity 60dB Intermodulation 55dB Spurious Response Rejection 65dB Max Audio Power Output 0 7W Speaker impedance 4 ohm Rated Audio Distortion lt 5 0 4W RX S N 45dB W 40 dB N 63 Specifications Service Manual Spurious and Harmonics lt 26dBm FM Noise gt 45 W 240dB N E le Adjacent Channel Power lt 65 W 60dB N Note All Specifications are tested according to TIA EIA 603 and subject to change without notice due to continuous development We endeavor to achieve the accuracy and completeness of this manual but no warranty of accuracy or reliability is given All the specifications and designs are subject to 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
7. Detection pin programmable Detection pin modulated digital 16 PTE3 TPM1CH1 CODE I O signal input output PTE4 SS1 SEBN o SPI port of communication PTES MISO1 so p SPI port of communication 17 CPU Pins Service Manual o jenom smo o none a nes ss o erosion 21 VSS VSS Ground PAN a mem OTO oaae O jo ern om jm mmm om jm m a e mm meme m m meme a nemi Jo re aj BPC E om e me m O a emmamma eme o eres o jemmaan eme Re ee no o rn eas TO remos jem m OO I CO JA amp amp amp amp w gt C wx Service Manual CPU Pins O jeste fo e M men ee fo fous 0007 PTD1 AD1P9 Reserved Reserved jw INN renne jo o jom ja jous rro jan a jommi m Je mem O s jonon eme om O P Re ees O R no R ln O TTT ee je be CPU Pins Service Manual 20 Service Manual Parts List 1 6 Parts List 1 Wo RefNo Prini o Paine Derbi a C102 3101051020010 Chip capacitor 1000PF K 50V X7R 0402 RoHS C103 3101051000020 Chip capacitor 10PF J 50V COG 0402 RoHS C104 3101051000020 Chip capacitor 10PF J 50V COG 0402 RoHS C105 3101051020010 Chip capacitor 1000PF K 50V X7R 0402 RoHS C106 3101051040060 Chip capacitor 0 1UF K 16V X7R 0402 RoHS 6 C107 3101051020010 Chip capacitor 1000PF K 50V X7R 0402 RoHS C108 3101051040060 Chip capacitor 0 1UF K 16V X7R 0402 RoHS 8 C109 3101051020010 Chip capacitor 1000PF K 50V X7R 0402
8. One beep will sound Scan End Alert programmable by the dealer One beep will sound The Status Indicator glows red when the PC is Writing Reading reading data from the radio Service Manual Product Controls The Status Indicator glows green when the PC is writing data into the radio A low pitched tone will sound when the radio switches from high power to low power Power Adjustment A high pitched tone will sound when the radio switches from low power to high power The alert tone sounds once when the VOX feature Is activated The alert tone sounds twice when the VOX feature Is disabled Channel Selector Knob Rotate the knob to select your desired channel Power On Off Key Long press the Power On Off Key until an alert tone is heard to turn the radio on off Volume Control Keys You may adjust the volume level through keys Press to increase or to decrease the volume level During adjustment the radio will sound alert tones corresponding to the volume level Battery Latch Used to secure or remove the battery Audio Accessory Jack Used to connect audio accessories such as earpiece and microphone Mini USB Jack Used to connect accessories such as programming cable cloning cable and power cord Software Specifications Service Manual 3 Software Specifications Function List Channel Capacity 16 Channel Spacing 25KHz 12 5KHz Channel Scan Rx Tx status
9. R126 1K NC OR l C132 C133 470p 470p AFOUT lt lt FM CODE OUT IN Mic U101 D662 RDA1846S C135 C136 100p NC NC C118 C119 C121 C122 RFOUT lt lt 102 470p 470p 470p 470p OR C138 a A E 601s 16 C113 C114 Ju 1000 0 1u I I VDD VDD T R146 22P tu Q103 3 2SJ243 H7 H7 2SK1824 A104 2 E SE U a E E IH O84 C134 470p 10K D656 C669 C675 RB706F 40 C670 1000p C128 470p i R131 100R R132 100R R142 100R R138 100R R139 100R TT O 1008 100R C129 C131 470p 470p gt sDIO gt SCLK lt SEBN CSS C CODE INT lt SDO gt gt RXON gt gt TXON sa gt gt PDN C 0470 schematic Diagram MCU amp POWER TP106 n R303 R621 TXD 10k R301 R302 1k BEEP y 10k 100K C638 V BAT 15p U301 T 5 T V BAT MAX9716EUA 4 3 R605 R625 2 USB 1 R635 680R 2 2K He 1 J201 N dea R311 ca a OR SHUTDOWNI g 10R 0 1u O s D601 D602 R602 o OB E mi GREEN Ws A RED gt 100k C302 E m 0 47u R630 D606 C314 R x X Y NC NC 100p D609 C315 D607 a NC 100p NC Q605 T E vcc UMG3N C605 R603 p TP109 das tee TOOR R309 ij z 5 D SKI TXD R617 gt R616 E TP113 47k 47k C634 C674 BKGDIMS R618 I 470p R626 C632 470p 47R SW601 1k 470p ON OFF pe R624 vec 10k D203 D204 R619 47R U605 R623
10. Status Indicator goes out gt During the operation if any abnormal situation occurs or no reply is given within a certain period the reading writing operation will fail and an error message window will pop up 3 1 3 Wired Clone Mode Description Wired Clone mode is an independent mode To access other modes you must restart the radio Wired Clone Mode includes Clone Mode and Factory Clone Mode e Clone Mode Connect two radios using a clone cable Hold both SK and Power On Off Key of the source radio it will be turned on and will enter Clone Mode after 2 seconds The target radio can be directly turned on to enter user mode In this mode parameter data stored in EEPROM of the source radio will be cloned to EEPROM of the target radio The range of data transmitted only covers channel data and common parameters excluding tuning data version and serial No of the model e Factory Clone Mode Connect two radios using a clone cable Hold both SK and Power On Off Key of the source radio it will be turned on and will enter Clone Mode by default after 2 seconds Press SK afterwards to switch to Factory Clone Mode The target radio can be directly turned on to enter user mode The range of transmitted data covers all data including settings for the Manual Tune Switch stored in EEPROM with exclusion of the serial No Process Process of Wired Clone Step 1 The Status Indicator flashes red once after the source radio enters Wired Clone
11. Terminal 10 Channel Status 11 Channel 12 Charge 9 Power On Off Key Indicator Selector Knob Indicator 13 Accessory Jack 14 Accessory Jack 15 MINI USB Port 16 Strap Hole over 17 Screw for Belt Clip 18 Belt Clip 19 Battery Cover 20 Battery Latch Service Manual Product Controls PTT Push to Talk Key Hold the PTT key to transmit and release it to receive Programmable Function Key The side key SK can be programmed with long short press functions by your dealer Note Short Press means key press shorter than 1 second while Long Press means key press longer than 1 second x Channel Status Indicator See the table below for LED and alert tone indications Hold down both SK and Power On Off Key and the source radio is turned on with Status Indicator To enter Wired Clone Mode flashing red once Turn on the target radio directly The Status Indicator glows red during cloning process Error occurs during cloning e User Clone Once cloning begins freguency band and Model ID will be checked The Status Indicator glows orange for 2 seconds and then goes out to indicate a failed check If the check is successfully carried out but error occurs during Status of the source radio cloning the Status Indicator will keep flashing After target radio is turned on orange until you press any key other than the Wired Clone and cloning cable is Power On Off Key to cancel it
12. enter Item N of Tx group N depends on the position where the channel selector knob locates The Status Indicator glows red for TX tuning items and green for RX tuning items To switch between TX Tuning items and RX Tuning items This operation is done through the channel selector knob e The Status Indicator solidly glows red when you are adjusting items in Tx group e The Status Indicator solidly glows green when you are adjusting items in Rx group About the TX RX tuning items This action is carried out by applying channel selector knob as follows e TX group CH1 CH9 respectively stands for TX Low Power TX High Power CDCSS Balance CDCSS Deviation CTCSS Deviation low CTCSS Deviation medium CTCSS Deviation high TX Low Voltage Threshold and Max TX Audio Deviation Service Manual Software Specifications The Status Indicator solidly glows red during TX group tuning CH1 to CH9 RX group CH10 CH12 respectively stands for SOL On 5 SAL Off 5 and RX Low Voltage Threshold The Status Indicator solidly glows green when you are tuning items CH10 CH12 On CH13 CH16 no tuning item can be found and the Status Indicator goes out To switch between wide and narrow bands When tuning a certain item short press SK the Status Indicator flashes orange indicating valid press to switch between wide narrow bandwidth After this operation the first freguency of current bandwidth is the freguency for adjustment by default To switc
13. 001865000000 sta shielding mask TOZOmM 00 RoHS 1 43 5 POB board IT158 4L 4P 89 80 38 93 1 2 RoHS EU a x 30 Service Manual Tuning Description Z Tuning Description 7 1 Required Test Instruments Radio communication test set HP8921 1 set 10V 3A regulated DC power supply 1 set Digital voltmeter 1 set Ammeter 1 set 7 2 Preparations Place the board to be tested on the test fixture please ensure good connection between each test point and the fixture and connect the board to a power supply with DC voltage of 3 8V Wired Clone 7 2 1 Instructions Connect two radios using a cloning cable Simultaneously hold down SK Side Key to power on the source radio so that the wired clone mode will be entered after 2 seconds and then press SK to switch to factory wired clone mode when the wired clone mode is entered the user wired clone mode is defaulted then directly power on the target radio to enter the user mode The Status Indicator flashes red once after the source radio enters Wired Clone mode Press PTT to clone data to the target radio During communication the Status Indicator of the source radio glows red and the Status Indicator of the target radio glows green When the communication ends green LED of the source radio glows and the green LED of the target radio goes out which indicates the preparation for another clone If any abnormal situation occurs during communication
14. 10 chip capactor 22PF J SOV oG 0402 ROHS 10 us cum Ten 8101052200010 Cp capacitor 22PF J sov CoG 0402 RoHS 1 iso cem BIG 8101051020010 Chi capactor 1000PF K SOV TR 0402 RoHS 1 Osi cen BIG 9104074750070 Tanilun capaciorA7UFM 10V P Rons 1 ase ce aH 3101051040060 Chi cpacior 1UFK 16V XR 0402 RoHS 11 15s ce 856 8101062250000 Chi capacitor 220F K 10V XSR 0603 RoHS 1 ise cem sb 3101056710010 chip capactor 470PF KSOV XTR 0402 RoHS 1 iss cms B18 3101052230000 chip capactor O922UF K 16V X7R 0402 RoHS 1 rise ome Bre 9101054710010 Chi copacko470PF K SOV TR 0402 RoHS 1 Cisr cer Ta 3101051020010 Chi capacitor 1000PF K SOV XTR 0462 RoHS N 1 ase ce BIB 8101054710010 Chi copacko470PF K SOV XTR 0402 RoHS 1 rise cuis pse 3101051080020 Chip capacorOOTUF K25V x7R 0402 RoHS 1 160 caso Bza 5101051040060 Chip capactor 0 1UF K 16V X7R 0402 RoHS 1 rier cs eal Renas Cp capacitor 1UF K tev X7R 0402 RoHS TO 162 css Tap 9104074750070 Tantalum capacitor JUE M 10VP RoHS 1 165 cesi Tao 8101051020010 Chip capactor 1000PF K SOV XTR 0402 RoHS 11 164 CASA BHE 8101054710010 Chi copacko470PF K SOV XTR 0402 RoHS 1 Lies cess Ta 3101051040060 Chi capacitor UK 16V KTR 0402 Rots 1 165 cess Bar 8101054710010 Chip capactor 470PF KV TR 0402 RoHS 1 ter 0667 sa 8101054720000 Ch
15. 4 C640 C615 C643 G601 22U 16V Zr 470p 0 1u 2 2u j 3 6V l 5 Schematic Diagram PA8LNA L416 C459 NC NC YY w401 ANTENNA C404 R440 C409 L420 R414 C414 L408 L417 L419 C425 6p 3 3k 18p 12nH 1k 15p 2 2nH 2 2nH 3T 100p 5 RFOUT gt E 0403 C418 C438 C451 C435 C419 C448 C421 C423 C450 C449 D401 C410 C439 C415 C416 RDD07 47p NC 22p 12p 129 NC NC we 2p 4 7p HVU131 15p L406 12p 18p 100p L409 L411 1 1uH 4 J 8T 220nH N 0402 a i F R415 N i N i N N N 2SK3078 47R VT R418 C413 m 270R 470p C436 C437 C440 D403 C417 0 1u 01u 470p AK ST TO R444 0426 R410 T o ADUC i TI 7 270R 470p L407 29 221s Baja C501 C502 D503 D502 10k 2p 2p BA277 BA277 3V3 Q409 SUS 0 33u R411 47k C453 V BAT 0 1u W C452 C457 424 10u 16V 0 01u W C420 3 4 pro 0 1u 10V R425 un R430 VT al Jl R423 150k 1 gt N R419 R420 150k 1 0 39R F 0 39R F R442 E C454 10R 1 470p 1 EMD22 1000p gt R405 V BAT 100K 3 C445 BIAS DOWN X 2 y 0406 470p id DEI MEE E R426 R427 0 1u C407 150k 1 100k 1 470p 1 R438 28 82K R437 E KAPO una 4 7K 33K C464 0 1u 3V3 0502 EMD22 L527 R519 601s 51R 4 T 3 ME RX_EN C524 C521 EN 470p 0 1u R516 R514 a NC 3 9K C527 1 Il 470p C525 L506 C528 1000p 100n 1000p R523 C520 OR RFIN lt lt C513
16. 427 B3B 3101061010010 Chip capacitor 100PF J 50V COG 0603 RoHS EN 76 cm sm 3101050200610 Chi capaciorzPFB50V COG 0602 RoHS 1 Lao cts asa 101080800000 Chi capacitor B sov COG 0402 RoHS 11 Ls esas GSC 8101061200000 Cp capactor 12PF J Sov CoG 0603 RoHS 1 L cts 820 3101051040060 Chi cpactor 1UFK 16V XTR 0402 RoHS TO 85 C437 B2c 3101051030020 Chip capacitor 0 01UF K 25V X7R 0402 RoHS EU 22 EN EN ES ES Service Manual Parts List 1 No Ref No Print No Part No Description Qty a cese ESD 3101081200020 Chip capacitor 12PF 4 sov COG 0402 RoHS 1 Las c 98 3101051040060 chin capacor01UF K 16V X7R 0402 ROHS 1 eo cuz Tas 3101084710010 chin capacitor 470PF K SOV x 0402 ROHS 1 90 C443 T2B 3101054710010 Chip capacitor 470PF K 50V X7R 0402 RoHS La fl 91 C444 T2B 3101054710010 Chip capacitor 470PF K 50V X7R 0402 RoHS E Lar cus Tas 8101084710010 chip capector470PFKS0V TR OM ROHS 1 Lm cus METE KINO ETI EN Lour Tax 3101051020010 chip capacitor 1000PF K sov xrR 0402 RoPS 1 Las cus 558 3101064780010 chip capacitor 47PF B Sov COG 0605 RoHS 1 ss casi B38 3101090200010 chin capacor2PF B Sov C06 0603 RoHs 1 os casa Tas 3104061000120 Tantalum capacior1OUF M 16V S RoHS 1 eo cass Tas 3101051040080 cin capacitor 0 1UF K Tov XTR 0402 Ror 1 iar cen SE 3104061000120 Tantalu
17. 710010 Chip capacitor 470PF K 50V X7R 0402 RoHS NN 32 C133 T3F 3101054710010 Chip capacitor 470PF K 50V X7R 0402 RoHS KE 33 C134 B3F 3101054710010 Chip capacitor 470PF K 50V X7R 0402 RoHS eci 34 C137 B3F 3101051010030 Chip capacitor 100PF J 50V COG 0402 RoHS NN 35 C138 B3E 3101051010030 Chip capacitor 100PF J 50V COG 0402 RoHS KE 36 C140 T4F 3101054710010 Chip capacitor 470PF K 50V X7R 0402 RoHS KEN C141 3101061050000 Chip capacitor 1UF Z 25V Y5V 0603 RoHS C201 3104074750070 Tantalum capacitor 4 7UF M 10V P RoHS 39 C202 T2E 3101051010030 Chip capacitor 100PF J 50V COG 0402 RoHS N C203 T2F 3101051010030 Chip capacitor 100PF J 50V COG 0402 RoHS NE 41 C209 T2F 3101054710010 Chip capacitor 470PF K 50V X7R 0402 RoHS IKE 21 Parts List 1 Service Manual No Ref No Print No Part No Description Qty i 55 Chip capacitor 0 1UF K 16V X7R 0402 RoHS 1 eo cor rs 3101086710010 Chip capactor 470PF KSOVXTR 0402 ROHS 1 Use cra B30 101051500020 chip capactor 18PF J 5OV COS 0402 RoHS 1 Tes ome s 8101061010010 Chi sapacior 100PF J 50V COG 0605 RoHS 1 Use cer SSD 3101051040060 Chi vapaan 0 1UF K 16V XR 0402 RoHS 1 Crs cus mas 3101061010610 Chi capacio 100PF J 50V CoG 0605 RoHS 1 76 cum TAB 8101084710010 Chi copacko470PF K SOV XTR 6402 RoHS 1 77 C
18. 790 HE lede z pal Osan S190 6090 m zs 7990 coca T Ls 5129 N Sf o N o lid 56 PCB View Bottom Layer LARE AG a Hat E 14 Level Diagram 24dBm 2450m Vrms 7dBm 90m Vrms 37 5dBm T i 1 120m Vrms ipd 36dBm 123dBm DAC ADC vt 37dBm o ANT LPF DSP D4018 p402 122dBm 121 5dBm U101 RDA1846 d 113dBm al 109dBm 15 Block Diagram B201 Dn LED SPK lt VOX DET SP JACK J3 PJ D3027D MICJACK VOX DET U613 D656 NN lt id LED D601 RESET gt E2ROM U603 SDA SCL lt PTT SKI SK2 R LED SW CHANNAL U622 MCU MC9S08AC60 ez m SDIO SCLK SEBN PDN DAC ADC L T CSS CODE INT SDO RXON TXON SQ PDN DSP V BAT U101 RDAIS PA Q403 RD07 Lh BIAS DOWN APC o U401 K 46 Synthesizer D4014 D402 16 Schematic Diagram o Schematic Diagram IF 3V3 VDD L112 601s L110 1uH C103 C104 VDD 100 10p R127 R128
19. 8 1 ESD protection diode 10 5A 8 20uS 0603 RoHS EN 25 m a M om a I NII I AI AI A A A k k A A l A A A a l k k k l a l a A A a a a A A A l A A k k I I k a a a Parts List 1 Service Manual No Ref No Print No Part No Description Qty D614 T4B 3310990000160 ESD protection diode 10 5A 8 20uS 0603 RoHS D615 T4A 3310990000160 ESD protection diode 10 5A 8 20uS 0603 RoHS D656 3303030300000 Schottky diode 40V 30mA 0 26V 1mA SOT 323 RoHS D657 3310990000160 ESD protection diode 10 5A 8 20uS 0603 RoHS D662 3310990000160 ESD protection diode 10 5A 8 20uS 0603 RoHS D663 3310990000160 ESD protection diode 10 5A 8 20uS 0603 RoHS 224 D664 T4E 3310990000160 ESD protection diode 10 5A 8 20uS 0603 RoHS 225 DOWN 4301080000090 Momentary contact 12VDC 0 05A TC 320 SMD RoHS 1 226 4201 BaD 5205005000100 Rd 5Pin 0 5mm female SMD 9 9 9 2 4 0mm zar Java O so 5205008000010 O O 1 228 1102 ESE 3001060000000 chip resistor 0 om 0805 Ror 011 Pe Ferrite bead 6000 100MHz 25 500mA 0603 RoHS 230 1108 3221506601000 Ferrite bead 6000 100MHz Ferrite bead 6000 100MHz 25 500mA 0603 RoHS 500mA 0603 RoHS era L440 Kaa 3943306102000 chip inductor 1uH K 25mA 0 60 0 35 0603 T o m Ta ZENA an SNS L111 B4F 3221506601000 Ferrite bea
20. HT SERVICE MANUAL TWO WAY RADIO Contents TIMO ACI OM etm 1 2 Product Controls ERU Mi IM MI EI 2 9 DOMWare SDECINICAUONS tsi nini A doba m a evo o au usa 6 ASGIFCUI DESCEIDION Manes mem 10 SC po PINS osvete P RO S E E ME E E PA E PR ee 17 AA A E ein E E kai 21 T Tuning DESCHIDUOM eorr alia 31 9 Ii roubleshoolting Flow lor ume TR 42 9 DISASSEMDIY and crie 45 10 Exploded VIEW m 51 11 Parts NL A o P o RR Pra E Poa 52 12 AC KING CTU U sas 55 13 PCB VIEW e 56 TA Level B V o A 58 15 o o De ARI L TTT 59 16 Schematic Dia Ts Le T 60 I7 SPecilicalions ilaria 63 Copyright Information HYT is the trademark or registered trademark of Hytera Communications Co Ltd the Company in PRC and or other countries or areas Hytera retains the ownership of its trademarks and product names All other trademarks and or product names that may be used in this manual are properties of their respective owners The product describes in this manual may include the Company s computer programs stored in memory or other media Laws in PRC and or other countries or areas protect the exclusive rights of the Company with respect to its computer programs The purchase of this product shall not be deemed to grant either directly or by implication any rights to the purchaser regarding the Company s computer programs Any of the Company s computer programs may not be copied modified distributed d
21. J 1 16W 0402 RoHS 5 ass Reis O psa 3001054700000 chip resitor 470 ION 040 RoHS 1 as Ress Ba 3001051090000 chip resistor TOKA 4 16W 0402 ROHS 1 aus Ress O Bal 3001051090000 chip resistor tok J 1160902 ROHS 1 386 R687 B2H 3001051020000 Chip resistor IKO F 1 16W 0402 RoHS EN 29 Parts List 1 Service Manual No Ref No Print No Part No Description Qty Law Rsa SIG so0t0st020000 chip resistor KA Few 0462 nana TO 392 R693 B4G 3001051020000 Chip resistor 1KQ F 1 16W 0402 mE ses ese B18 3001050000000 Chip resistor oo J nana iY si swoot rsa 4901060000020 Momentary conacti2VDG oosa SMD ROHS 1 ES U101 NS 3613999000020 al processor IC 3 3V E 124dBm KE 396 U301 T3E 3602012000020 IC 1W 8ohm 2 2 5 5V 8uMAX RoHS ser ua ras 3605008005070 Operational anaie 9 32 200m 100802 ROHS 1 EINCENINE S3 ls 402 usta BSG 3608006000040 Tu management IC LDO 1 7 5 25V 3 0V 300mA aos us BBE 3606015000210 Power managonent IG AR 1 Lu cor xw rotate 22 og Rae 407 XT101 T2G 3701002660130 TCXO 26MHz 3 135V 3 465V 2 5ppm 3225 RoHS 408 B2c 7000183000000 Heat sink 3 5 1 5mm 00 RoHS 409 B3C 7000183000000 Heat sink 3 5 1 5mm 00 RoHS 1 Lao 1 eaote4s000000 VGO sti mask 030mm 00 ors 11 Lan T 92651000000 Fr steka mask 020mm 00 ROHS 1 La 1 6
22. R31120271A 1048 VDD OUT VCC GND CD D302 EDZ6 8B B MIC IN C690 J202 1000p 2 O MIC1 BIAS DOWN lt lt 15 TXON RXON i css a C218 H R220 0201 1u OR 2SA1980E 1k R202 1 1 Mic r 2 2K B201 C684 C685 C683 C686 ner D201 NC 470p 470p 1 470p 470p id est on 1000p R644 4 7K VRCRX A C636 R645 C637 0 1u 4 7K 0 1u 2SK1824 POWER APC C217 C627 R684 C655 R683 C689 0 1u ama 0 1u 4 7K 470p PDN n R687 ole 1K R688 i SSBEEP SW 604 O 1K UP C648 C662 O SW 605 R686 C657 R685 C630 C650 C687 C691 470p 470p DOWN C646 C663 10K 4700p 10K 0 01u 0 1u 470p 470p a 470p 470p MUTE N C692 470p ei DS i BH N SDO ET m V BAT TP610 ena TO j U606 CHARGE SCLK Rd rore 470p 0 022u SW603 MC34673 O sa lt A p SW602 470p dii BAT VIN KIN V DEN i S ISET PPR DEN TT al o de el Lo FAST CHG ni N N N 4 74 10V C682 C666 C667 C665 C67 679 C680 678 C681 470p 470p 470p 470p 470p 470p py 470p 3V3 VDD SW606 R690 5 SW channel 1k R691 2 1k 1 C609 C612 C613 eg o gi cese 0621 POWER gt 22u 0 01u 1000 e e G 0 01u 22u C C T e T o a I V BAT al R692 Y VR693 TP206 vcc D615 D614 peog 10660 C659 C658 C6611k 1k C626 C625 C624 C623 O v T 470p 470p 470p 470p 470p 470p 470p T 470p 9215 5 BUG naiai L C611 C656 C606 C631
23. RoHS 9 cio 3101051040060 Chip capacitor 0 1UF K 16V X7R 0402 RoHS C111 3101051020010 Chip capacitor 1000PF K 50V X7R 0402 RoHS C112 3101051040060 Chip capacitor 0 1UF K 16V X7R 0402 RoHS C113 3101051020010 Chip capacitor 1000PF K 50V X7R 0402 RoHS C114 3101051040060 Chip capacitor 0 1UF K 16V X7R 0402 RoHS C115 3101051020010 Chip capacitor 1000PF K 50V X7R 0402 RoHS C116 3101051040060 Chip capacitor 0 1UF K 16V X7R 0402 RoHS C117 3101054710010 Chip capacitor 470PF K 50V X7R 0402 RoHS C118 3101054710010 Chip capacitor 470PF K 50V X7R 0402 RoHS C119 3101054710010 Chip capacitor 470PF K 50V X7R 0402 RoHS C120 3101051020010 Chip capacitor 1000PF K 50V X7R 0402 RoHS C121 3101054710010 Chip capacitor 470PF K 50V X7R 0402 RoHS C122 3101054710010 Chip capacitor 470PF K 50V X7R 0402 RoHS C123 3101051040060 Chip capacitor 0 1UF K 16V X7R 0402 RoHS C124 3101062250000 Chip capacitor 2 2UF K 10V X5R 0603 RoHS C125 3101061050000 Chip capacitor 1UF Z 25V Y5V 0603 RoHS C126 3101051020010 Chip capacitor 1000PF K 50V X7R 0402 RoHS C127 3101071060010 Chip capacitor 10UF K 10V X5R 0805 RoHS C128 3101054710010 Chip capacitor 470PF K 50V X7R 0402 RoHS C129 3101054710010 Chip capacitor 470PF K 50V X7R 0402 RoHS 29 C130 B2H 3101051040060 Chip capacitor 0 1UF K 16V X7R 0402 RoHS KN C131 B4G 3101054710010 Chip capacitor 470PF K 50V X7R 0402 RoHS N 31 C132 T3F 3101054
24. X7R 0402 RoHS ios caus 846 3101050600000 chip capactor PF J 5OV COS 0402 RoHS 1 Tea cas am 8101054710010 Chip capactor470PF K SOV XTR 0402 RoHS 1 200 cem BAI 8101051020010 Chi capactor 1000PF K SOV XTR 0402 RoHS 1 Lao CASI TAK 3101054710010 Chip copacko470PF K SOV XTR 0402 RoHS 1 amo CAS Tar SIOIOSATIODIO Chi cpacior TOPFK SOV APR 6402 RoHS 11 205 cms saj 3101051040060 Chip capactor TUF K 16V X7R 0402 ROHS 1 204 Domo TAI 3000000000080 Zener dode sev SOD Sz3 ROHS A aos bam Tae SO959090080 Zener dode sav S00 825 RoHS 11 206 bon 4E sseeesoo00080 Zener diode sav S0D 523 RoHS 11 aor bam S28 305180800000 Varstor dode 100mA max 10 500 323 RoHS 1 205 pars BaD SS10990000180 ESD protecion dode 10 S i20u5 0603 RoHS 1 209 sce 828 5603660000050 Switching diode 38V 100m IV SOD Sz3 RoHS 1 Dano osas 525 3903660000050 Swing diode 36V 100mA 1V SOD Sz3 RH 11 Fait osos iB 3000090000260 Rocker diode 10V 15m 380mV 1mA MPAK RoHS 1 O ena TA 3507110100190 LED green doma oma 2 1 0608 ROHS 1 Fare benz Taa 2207110100060 LED red 200mod 30mA 18V 1 9X0 mm ROHS 1 Fata DAG SSA 3807110100180 LED green 40mca 30mA 2 1V 0603 RoHS 1 zs DAD Bsa 2207110100060 LED red 200mod 30mA SV Taan RoHS 1 ze bens Tan 3810660000160 ESD protecion dode 105W 825060
25. channel long press PTT to perform narrow band 3 Tuning Description Service Manual E test Hold PTT SK to power on the radio and then go to channel 6 Short press PTT to Medi switch the freguency Following wi deband test long press PTT to perform narrow band test Hold PTT SK to power on the radio and then go to channel 7 sci Short press PIT to switch the freguency Following wi deband test Service Manual Tuning Description long press PTT to perform narrow band test Hold Communic Antenna Press UP 4 3KHz PTT SK to ation Test Bracket or DOWN to power on Set BPF tune the audio the radio 20Hz 15 for earpiece deviation Then and then go KHz save your jack to channel 9 AF Genl change and go Short press Lvl to another TX PTT to 120mV channel Audio switch the Devian frequency e Following wi deband test long press PTT to perform narrow band test TX Low Hold Adjust the power In case of Voltage PTT SK to Supply Port Supply supply to 3 42V lt 3 42V TX is Threshold power on and press UP inhibited the radio or DOWN to Digital and then go sample it Then voltmeter to channel 8 save your change and go to another channel 39 Tuning Description Service Manual Note Make sure that the antenna or load is connected before tuning rotating the Channel Selector Knob will save the value aut
26. ck TX path V v V Check antenna Check APC connection check Q407 0908 control circuit and Q404 42 Service Manual RX Circuit No RX Troubleshooting Flow Chart Yes Replace RX LED D601 Normal RX No Check RX circuit circuit Yes No Normal RX LED Yes Correct RX No Change RX signaling signaling Yes No Normal speaker Replace Me speaker Yes Normal audio No Check audio amplifier amplifier circuit Yes Normal volume No Replace the switch volume switch Yes CU U601 P8 work No Check or normally replace MCU Normal No E Check or replace demodulation CD501 and CF501 ormal IF mixer N CHECK UOTI Katie O 0502 XF501 XF502 ormal RF mixe No Check LO circuit VCO amp Q502 Yes Check BPF Yes Check antenna amp LNA Q501 connection 43 Correct RX No ch A frequency di ange I No Correct RX sguelch level gt Change it Troubleshooting Flow Chart MCU CE Normal power up alert tone Yes No No Normal speaker gt Replace it Yes Y Check U601 No U602 U604 and U606 No ie s Replace X601 Yes v Check pin ther control pi
27. d 6000 100MHz 25 500mA 0603 RoHS IEA 283 L112 T3F 3221506601000 Ferrite bead 6000 100MHz 25 500mA 0603 RoHS E NE L402 B4E 3221506601000 Ferrite bead 6000 100MHz 25 500mA 0603 RoHS EN EJ L406 ICE mm m chip inductor 1uH J 245mA 1 10 0 30 1008 EN L407 B3D 3221507221000 Ferrite bead 2200 100MHz 25 2000mA 0805 RoHS EN Multi layer chip inductor 2 2nH S 500mA 0 100hm 0 12 237 L408 MESS 3210306229000 0603 RoHS EN L409 3231351680000 Air core inductor E2 0 35 1 6 8TR RoHS L410 E 3221507221000 Ferrite bead 2200 100MHz 25 2000mA 0805 RoHS Wire wound chip inductor 220nH J 240mA 0 700hm 0 35 4412 3231351630000 Air core inductor E2 0 35 1 6 3TR RoHS FIS L413 il 3231351630000 Air core inductor E2 0 35 1 6 3TR RoHS L414 BEBE 3231351640000 Air core inductor E2 0 35 1 6 4TL RoHS 1 Multi layer chip inductor 2 2nH S 500mA 0 100hm 0 12 T mE p Mure PIVA NENA L419 3231301030000 Air core inductor E2 0 3 1 0 3TL RoHS Multi layer chip inductor 12nH J 300mA 0 280hm Q 8 L501 3231351640000 Air core inductor E2 0 35 1 6 4TL RoHS Multi layer chip inductor 100nH J 300mA 0 900hm Q 12 a 1150003 RoHS Multi layer chip inductor 47nH J 300mA 0 700hm 0 12 2 3219306470000 0603 RoHS Multi layer chip inductor 12nH J 300mA 0 280hm 0 12 EN BE Pa PI 0 RoHS FICO RETI 0603 Ro inductor 12nH J 300mA 0 280hm 0 12 ka OR BAR NR 531 77 5 TAME 255 1604 Bae
28. ecompiled or reverse engineered in any manner without the prior written consent of the Company Disclaimer The Company endeavors to achieve the accuracy and completeness of this manual but no warranty of accuracy or reliability is given All the specifications and designs are subject to change without notice due to continuous technology development No part of this manual may be copied modified translated or distributed in any manner without the express written permission of us If you have any suggestions or would like to learn more details please visit our website at http www hytera com Service Manual Introduction 1 Introduction Intended User This manual is intended for use by gualified technicians only Product Controls Service Manual 2 Product Controls HEL 4 Volume Control Key 1 PTT Key 2 SK programmable 3 Speaker 7 Charging 5 Microphone 6 Nameplate 8 Antenna
29. ered to VCO and amplified to a signal with 8dBm When the RX RF signal enters this chip it would experience demodulation filtering de emphasizing and gain control Finally the signal is output to the audio amplifier 10 Service Manual Circuit Description e TX Circuit The modulated RF signal from RDA chip goes to Q407 and Q402 for amplification and then further amplified by Q403 Then the amplified signal is delivered to low pass filter to filter out the high order harmonics Finally it is sent via the antenna e RX Circuit After going through LPF and amplitude limiter the RF signal received from the antenna enters Q501 LNA for amplification Then the BPF will filter the signal to remove other unwanted signals The resulting signal is delivered to RDA chip for demodulation After that the voice signal from demodulation is output U301 for amplification which is finally output from the speaker Power Circuit LDO U619 and DO U621 convert the 3 8V power supply into two 3 3V power supplies powering VCC and VDD respectively VCC powers CPU while VDD powers RDA chip Then Q409 converts the 3 3V power supply to VT to power the TX circuit 4 2 Realization Methods of Basic Functional Modules 4 2 1 RDA Chip Circuit This chip is highly integrated Its function includes voice signal processing modulation demodulation DSP VCO PLL LNA and RF IF RDA Chip Circuit DAC ADC y T a Po DSP T 2 Hron U101 RDA1846
30. h the freguency Short press PTT the Status Indicator flashes green indicating valid press to switch between freguencies orderly under certain bandwidth and certain tuning item To tune the value Short press under certain bandwidth and certain tuning item and the value will increase in steps of 1 hold and the value will keep increasing in steps of 1 The value will remain unchanged once it reaches the allowed maximum value Short press under certain bandwidth and certain tuning item and the value will decrease in steps of 1 hold and the value will keep decreasing in steps of 1 The value will remain unchanged once it reaches the allowed minimum value About several special items e TX group CH8 TX Low Voltage Threshold This item is related to AD sampling Press or after entering the above item to activate AD sampling including calculation once Rotate the Channel Selector Knob to save the current AD sampling value If neither nor is pressed the value will not be updated and AD sampling will not be activated RX group CH10 CH12 respectively stands for SQL On 5 SQL Off 5 and RX Low Voltage Threshold These items are related to AD sampling Press or 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 nor is pressed the value will not be updated and AD sampling wi
31. indication red green LED CTCSS CDCSS Encode Decode 38 groups of CTCSS 83 groups of CDCSS and CTCSS Tall Revert of 180 degrees Low Battery Alert Battery Save Unlock Detection and Emergency Alarm 2 Selectable Sguelch Levels Monitor Time out Timer TOT Sguelch Tail Elimination PC Programming manual automatic adjustment High Low Power Switch 2 0 0 5 0W Wide 8 Narrow Bandwidth Compatible Busy Channel Lockout transmission prohibited in busy status Wired Clone Battery Strength Indicator Manual Adjustment Description of Modes 3 1 1 User Mode It is a conventional communication mode The radio will enter this mode by default after power on 3 1 2 PC Programming Mode The radio in User Mode enters PC Programming Mode through specific protocol based communication with the programming software In this mode radio functions and tuning parameters can be set through the programming software including User Version and Factory Version Service Manual Software Specifications Operations Step 1 Install PC programming software and its driver dedicated for TC 320 before your initial use Step 2 Connect the USB port of PC with the Mini USB port of the radio using a programming cable Step 3 Turn on the radio Step 4 Run the programming software to perform reading or writing operation Note gt When reading writing is in progress the Status Indicator glows red green when reading writing data is completed the
32. ip HH Tes cess TAB 8101064710000 Chip cpacior4TOPFK SOV TR 0605 RoHS 1 Chip capacitor 470PF K 50V X7R 0603 RoHS Chip capacitor 470PF K 50V X7R 0402 RoHS Chip capacitor 470PF K 50V X7R 0402 RoHS 24 Na laz N ARE Service Manual Parts List 1 No Ref No Print No Part No Description Qty aza osea BsF 9101051000020 Chip oapactor DOF K 25V X7R 0402 RoHS 1 Chip capacitor 470PF K 50V X7R 0402 RoHS arr oser BeH 3101084710010 Chi copacko470PF K SOV XTR 6402 RoHS 1 rire cess Tao 3101062250000 Chpcapacior22UFK 10V XER 0609 RoHS 1 rire oseo Tan 8101052200010 chi capactor 22PF J Sov CoG 0402 RoHS 1 ieo 00 TAK 8101051020010 Chi capacto 1000PF K SOV TR 0402 RoHS 1 181 cer Ta 3101051040060 Chi capactoro 1UF K tev PR 0402 RoHS 11 182 sre Tao 3101051040060 Chi capacitor UF K 16V XR 0402 RoHS 1 Lis CATS Taa 9101054710010 Chi capacitor 470PF K SOV XTR 0402 RoHS 1 rise cera Tan 9101054710010 Chi cpacior4TOPFK50V XTR 0402 RoHS 1 es cers TAH 3101051050000 Chi capactor1UF KOV XSR 0402 ROHS 1 Chip capacitor 0 1UF K 16V X7R 0402 RoHS KU rier carr Ba 8101054710010 Chi capactor 470PF K SOV TR 0402 RoHS 1 Chip capacitor 470PF K 50V X7R 0402 RoHS 162 cas SAM 8101054770010 Chip capacto OPP KS0V XTR 0402 ROHS 1 Chip capacitor 470PF K 50V X7R 0402 RoHS Chip capacitor 470PF K 50V
33. lector Knob locates And the Status Indicator will glow red or green according to the specific tuning item Or connect a programming cable to the radio for real time tuning in PC Programming Mode 7 4 2 Description of Tuning Items Switch of Wide Narrow Bandwidth and Freguency in an Tuning Item When adjusting a certain item long press PTT Status Indicator flashes orange indicating valid press to switch between wide narrow bandwidth After this operation the first freguency of current bandwidth is the freguency for adjustment by default Tuning Items e TX Items TX Frequency Tolerance TX Low Power TX High Power CDCSS Deviation CTCSS Deviation low CTCSS Deviation medium CTCSS Deviation high TX Low Voltage Threshold and Max Deviation Note These items are tuned inside the tuning mode e RX items RX Low Voltage Threshold and Max Audio Power 7 4 3 Specific Operations and Requirements Note By default channel 1 2 3 4 and 5 use wide band while channel 6 7 8 9 and 10 use narrow band Remember to connect the antenna properly Tuning Items for TX Measurement Tuning Specifications Condition Remak Test Test Point Compo Method Instrument nent Hold Press UP PTT SK to or Down to tune power on the TX carrier Communic Freq the radio Antenna frequency ation test lt 150Hz Tolerance and then go connector tolerance Save set to channel 1 your change and go to another channel 35 Tuning Desc
34. ll not be activated About the Key press Short press key press time shorter than 1 second Long press key press time longer than 1 second Circuit Description Service Manual 4 Circuit Description 4 1 General Principle Diagram The general circuit is composed of RDA chip circuit TX circuit RX circuit power supply circuit control circuit etc See the block diagram below MIC B201 2 SP JACK PJ D3027D MICJACK VOX DET U613 RE Z 1 L BATTERY G602 T VOX DET O W a D601 lt z Z ma NGC MCU J E RESET MC9S08AC60 i P no e pose Resim DSP I 2 VRCR CSS CODE INT SDO Lec PTTISKUSK2 RXON TXON SQ PDN i lt mM 1 U101 RDA1846 C RXEN a a Swich X q 0409 LDO 0408 Figure 1 e RDA Chip Circuit This chip is highly integrated Its function includes voice signal processing modulation demodulation DSP VCO PLL LNA and RF IF The voice signal from MIC goes to RDA chip for amplification Next the amplified voice signal will undergo a series of processing including A D conversion filtering pre emphasizing gain control amplitude limit and D A conversion Then the analog voice signal is deliv
35. llator This chip is applicable to UHF 400 520MHZ and VHF 134 174MHZ The NF can be up to 3dB and IIP3 up to 6dBm meeting GB and FCC requirements Its RF output may reach up to 8dBm 4 2 2 RF Power Amplifier Circuit TX Section The block diagram of the RF power amplifier circuit is shown in the figure below 12 Service Manual Circuit Description PA PA PA G407 Q402 Q403 25C3356 RD01 RD07 gt BIAS DOWN eo APC U401 BAT Lt Figure 3 The modulated RF signal from RDA chip goes to 0407 and Q402 for amplification and then further amplified by A403 Then the amplified signal is delivered to low pass filter to filter out the high order harmonics Finally it is sent via the antenna The control signal VT is used to control the operation of driver amplifier Q407 and Q402 U401 works for auto power control APC 4 2 3 Receiver Circuit RX Section The Block Diagram of RX Circuit is shown as below Circuit Description Service Manual V nr Figure 4 The RF signal is received via the antenna After going through LPF and amplitude limiter the signal is amplified by A501 LNA Next the BPF will remove the interference signal in amplified RF signal Then the resulting signal goes to RDA chip for further processing The processed signal is delivered to U302 for amplificati
36. m cpacior1OUF M 16V S RMS 1 Liz sm Ber 31010851080020 cin capactor 0 01UF K 28V XTR 0402 Ror 1 129 C613 B4F 3101051020010 Chip capacitor 1000PF K 50V X7R 0402 RoHS pose 23 Parts List 1 Service Manual No Ref No Print No Part No Description Qty 10 0516 BIG 9101051000020 Chi oapactor DOF K 25V X7R 0402 RoHS 1 181 cum Tae 8101082250000 Chpcapacior22UFK 10V XER 0603 RoHS 1 Chip capacitor 470PF K 50V X7R 0402 RoHS Chip capacitor 470PF K 50V X7R 0402 RoHS Chip capacitor 470PF K 50V X7R 0402 RoHS Chip capacitor 470PF K 50V X7R 0402 RoHS Chip capacitor 470PF K 50V X7R 0402 RoHS rier cem Tal 3101051040060 Chi capacitor 0 1UF K HHR ios osas BAH 101051080000 Chi capactor1UF Ke aV xR 0402 ROHS 11 ass cem Ban Remas Chi capactor 1UFK 16V XTR 0402 RoHS 1 mo cs BAI storosrosoozo Chi capactor O01UF K 25V XTR 0402 RoHS 1 ar css BsF 8101062250000 Chi cpacior22UFK 10V XER 0608 RoHS 1 osa cs Ba 8101054710010 Chi capactor4TOPF K SOV TR 0402 RoHS 1 Lus cem iE S101054710010 Chip capacitor TOPE KSOVXTR 0402 RoHS TO La CAM Taa SIOIOSATIODIO Chi capacitor 470PF K SOV XTR 6402 RoHS 1 Chip capacitor 470PF K 50V X7R 0402 RoHS 0 ias cuis sz 3101051040060 Chi capacitor O1UF K tev X7R 0402 RoHS 1 ar oser ea 8101051040060 Chi capacitor O1UF K tev KTR 0402 ROH 1 C cms Ta 31010822000
37. mode Press PTT to clone data to the target radio Software Specifications Service Manual Step 2 During communication the Status Indicator of the source radio glows red and the Status Indicator of the target radio glows green When the communication ends green LED of the source radio glows and the green LED of the target radio goes out which indicates the preparation for another clone Step 3 If any abnormal situation occurs during communication the source radio will flash orange Status Indicator and will stop communication for another cloning Step 4 When cloning ends the source radio goes back to the standby status Press PTT again to begin another cloning operation 3 1 4 Manual Tune Mode Hold PTT SK and Power On Off Key to turn the radio on and enter Manual Tune Mode Note This operation is subject to the option Tune Switch in the programming software If this switch is set to Close the radio can not enter this mode It helps avoid any unexpected change of values and degradation of radio performance Do keep this option unchecked after values are well adjusted from the factory to avoid any unexpected change of values Such values can only be reset and changed in Manual Tune Mode only Description of Tuning To enter Manual Tune Mode Hold PTT SK and Power On Off Key until the radio is turned on and the Status Indicator glows orange the radio will enter Manual Tune Mode When the key is released the radio will
38. n No connection or are normal reburn the program Yes V MCU is OK 44 Service Manual Service Manual Disassembly and Assembly 9 Disassembly and Assembly 9 1 Disassembly Step 1 Powering off the radio Step 2 Removing the belt clip Step 3 Removing the battery 1 Push the battery latch upwards 2 Remove the battery cover 3 Take out the battery by lifting its bottom side Step 4 Removing the antenna 45 Disassembly and Assembly Service Manual Step5 Removing the Channel Selector Knob nut and waterproof ring 1 Detach the Channel Selector Knob cover 2 Unfasten the screw 3 Remove the channel selector knob 4 Remove the nut and waterproof ring Step 6 Disassembling the radio chassis and the cover of PTT key 1 Unfasten the four screws on the chassis 2 Lift the bottom of the chassis 3 Pull the chassis out 4 Remove the cover of PTT key 46 Service Manual Disassembly and Assembly Step 7 Disassembling the main PCB 1 Remove the two fixing screws on the PCB 2 Remove the PCB and supporting ring of the Channel Selector Knob 3 Beware of the speaker cable and the charging piece at the bottom Chargi
39. ng Pieces 9 2 Assembly Step 1 Installing the main PCB 1 Make sure that the speaker is well connected and the charging piece on the bottom is correctly installed 2 Install the supporting ring of the Channel Selector Knob 3 Attach the main PCB 4 Attach and secure two screws Note Control the torsion force within 0 8 1 2kof 47 Disassembly and Assembly Service Manual o Don t damage the speaker cable during installation Charging Pieces Step 2 Assembling the chassis 1 Assemble the cover of PTT key 2 Assembling the chassis 3 Attach and secure the four fixing screws Note Control torsion force within 1 8 2 2kof Step3 Assembling the nut and Channel Selector Knob on the top 1 Attach and secure the nut on the top of the radio with a waterproof ring 2 Attach the Channel Selector Knob 3 Attach and secure the fixing screws 48 Service Manual Disassembly and Assembly 4 Attach and secure the Channel Selector Knob cover Step4 Assembling the antenna Step 5 Attaching the battery 1 Load the battery 2 Attach the battery cover 49 Disassembly and Assembly Service Manual Step 6 Attaching the belt clip
40. omatically 7 9 Appendix 1 Appendix 1 Reference Value for Source Radio Wide Band Narrow Band item Freg Freg Freg Freg Freg Freg Freg Freg Freg Fred 1 2 3 4 5 1 2 3 4 5 Tx Item Section TX High Power 128 CDCSS Deviatio 133 135 00 NES a O O 00 00 n CTCSS Deviatio NO C O N O N O N N N NO O1 O N n low CTCSS Deviatio O N O N N N OT N NO N NO C NO C NO O1 N CI O n medium CTCSS Deviatio 35 35 35 3 n high TX Low Voltage 200 Threshold VOX 120 GAIN1 VOX Gain GAIN2 VOX GAIN3 Service Manual Tuning Description Max TX 52 52 52 52 Audio Deviation Rx Item Section Sguelch Normal On Sguelch Tight On Sguelch Normal Off Off RX Low Voltage Threshold Max RX Audio Power Sguelch Tight 41 Troubleshooting Flow Chart Service Manual 8 Troubleshooting Flow Chart TX Circuit C Start V V v v Low TX power No voice No TX TX LED fails Replace D604 ormal TX powe Check TX power supply supply 7 Yes Check voice path MIC amp D102 No D604 glows red TX VCO locked Check TX VCO Replace D604 V Che
41. on and finally output by the speaker 4 2 4 MCU Control Signal Processing and Audio Amplification Circuit diagram of this section is shown as below 14 Service Manual Circuit Description MIC B201 2 SP JACK J3 PJ D3027D MICJACK V VOX DET U613 BAT D656 OL L alk BATTERY 5 LU LED G602 T en x SPK ES D602 y A a b O LED UY m D601 I J OC lt Z Z i ENO EN1 EN2 EN3 S 4 U622 MCU RESET gt MC9S08AC60 E2ROM SDIO SCLK SEBN PDN SDA SCL CSS CODE INT SDO PTT SK1 SK2 RXON TXON SO PDN Figure5 MCU Control Circuit MCU control circuit is composed of MCU EEPROM keys ete This section has the following functions to initialize data of the radio and save data to EEPROM to detect battery voltage and signals from external keys LD and VOX and to make response to transmit reguired data to PLL based on the channel encoding status to switch and control RX TX based on the input PTT signal to switch the sguelch circuit on off based on the input signaling decode signal and sguelch level signal to control circuits of high low power switch audio power amplifier RDA chip power supply RX power supply and 15 Circuit Description Service Manual TX power supply fo
42. r programming to communicate with PC via RXD TXD based on the RS232 protocol and transmit receive data to from PC RDA Chip Control By controlling the RDA chip the MCU can realize these services freguency setting freguency bandwidth reference clock sleep mode SA VOX sguelch freguency deviation voice filtering signaling encoding decoding pre emphasizing gain control amplitude limiting de emphasizing etc Audio Amplifier The audio signal output from U622 is amplified by the audio power amplifier U301 to drive the speaker directly Power Supply Section Block diagram of power supply circuit is shown as below pen U621 A owe Ce V BAT LDO U619 TX EN Figure 6 LDO U619 and LDO U621 convert the 3 8V power supply into two 3 3V power supplies powering VCC and VDD respectively VCC powers CPU while VDD powers RDA chip Then A409 converts the 3 3V power supply to VT to power the TX circuit 16 Service Manual CPU Pins _ Pins PIN PINNo Pin PinName Definition Description m mim PTC4 Power Switch ON OFF 2 emen a Connected to power switch for 2 IRQ TPMCLK reviving MCU in power off mode je je me oo memes joi o ermano wen lo pioa rra smi _ ermano fee o manga ame ess _ mang cost ses P memos oon nn o mer o E SN TT NC foon 1 nemmeno oom mm O o rera emm jaja Ooo PTE2 TPM1CHO FE
43. ription e Sguelch On Off to set the threshold value for enabling disabling the squelch function e Calibrate Wide Narrow SQ Open Close to tune the squelch threshold to compensate the circuit difference It is recommended to apply the same value to one model Increasing the value may tighten the squelch while decreasing may loosen it Skip RX TX High Low Pass to configure the audio filter 0 not skip 1 to skip one filter 2 to skip the other filter 3 to skip two filters Pre emphasis to configure the pre emphasis function e Skip CTCSS CDCSS High Low to set whether to skip CTCSS CDCSS filter e CTCSS CDCSS High Pass Filter to configure the parameters of CTCSS CDCSS filter e Wide Narrow Noise Detect High Low to configure the noise detection threshold Note It is recommended to set the Squelch Off to 121dBm Wide or 120dBm Narrow and set the Squelch On to 122dBm Wide and 121dBm Narrow When the values from your actual test vary greatly with those in the above table you can calibrate this problem by making Wide Narrow SQ Open Close 7 4 Method and Procedure 7 4 1 Description of Tuning Procedures Simultaneously hold PTT SK and Power On Off Key for more than 2s to enter tuning mode Status Indicator flashes orange After the keys are released the radio will enter the tuning item in this mode 34 Service Manual Tuning Description the item entered depends on the position where the Channel Se
44. ription Service Manual Hold PTT SK to power on Press UP the radio or DOWN to and then go tune the TX ER to channel 2 power Then save your Short press change and go PTT to to another switch the channel frequency Communic TX under test ation Test Antenna Power Hold Set connector UHF 0 5W 0 2W Is0 8A PTT SK to Ammeter Press UP or DOWN to tune the TX power on the radio and then go 2W 0 2W power Then High to channel 3 save your I lt 1 4A Short press PTT to change and go to another switch the channel freguency under test Hold Press UP Communic PTT SK to or DOWN to ation test power on tune the CDCSS Wide the radio Antenna deviation Then BPF 650450Hz Band and then go connector save your to channel 4 lt 20H2 30 change and go OHz to another Short press PTT to AF Genl channel 36 Service Manual Tuning Description switch the Lvl off frequency under test Following wi deband test long press PTT to perform Narr narrow band ow 400 50Hz Band Short press PTT to switch the freguency under test Hold PTT SK to power on the radio and then go Press UP Communic to channel 5 m or DOWN to Wide band Short press sb tune the CTCSS 675 50Hz G PTT to Spar Antenna deviation Then R switch the connector save your OHz 400 50Hz freguency change and go AF Genl Following wi Lvl off deband test to another
45. the rest are blank channels without tuning items 7 3 Baseband Design Harrow AAF Gain dE Adjust Digital 30 Compandor Time ms Lompandor Reference Pre emphasi s Pre emphasis F De emphasis Inhi De emphasis Pe Wide Volume Gain dB Harrow Volume Gain dB ione IHel el Geja TX AGC 255 Wide Output Harrow Output Seguelch Off 123 Skip CICSS CICSS Low Normal w squelch On 125 Skip CICSS CICSS High Normal Skip TA High Pass Hi CTCSS High Pass Filter 3 Skip RA High Pass 1 Ri LDC55 High Pass Filter Skip TH Low Fass Calibrate Wide SO Open 3 w Skip EX Low Pass 3 hod Calibrate Wide SQ Close 3 k Pre emphasis Normal w Calibrate Harrow SQ Open 5 he Calibrate Narrow SQ Close bull Wide Hoise Detect High 4T Wide Noise Detect Low 46 va Harrow Noize Detect 453 w Harrow Hoise Detect Low 42 bul In the above window only the items in Add area are applicable to RDA chip Values of all items are given below 33 Tuning Description Service Manual Add seguelch Uff 121 e Skip CTCSS CDCSS5 Low Normal Squelch On 122 Skip CTCSS COCSS High Normal sa Bi Na rese SE CROSS JR sh Bass Hle ag ae AN Ue e ESS uei eee bere Skip TX Low Fass Calibrate Wide 54 Open Skip db lam Pepe Ba breda ide SE Pese Pre emphasis Calibrate Harrow SU Open Calibrate Narrow SQ Close Wide Noise Detect High Wide Noize Detect Low 45 Harrow Hoise Detect Harrow Noize Detect Low 4 d E ra Cd Desc
46. the source radio will flash orange Status Indicator and will stop communication for another cloning When cloning ends the source radio goes back to the standby status Press PTT again to begin another cloning operation 7 2 2 LED Indication during Cloning Orange LED flashes an error occurs during cloning In this case press any key other than the power switch to turn it off Green LED glows the cloning is done successfully 31 Tuning Description Service Manual 7 2 3 Difference between Factory Clone Mode and User Clone Mode 6 User Clone Mode Only clone relevant data in user mode such as freguencies Test parameters like test freguency test item and base band parameter will not be cloned e Factory Clone Mode Clone all the data excluding serial No e Description of Tuning Items Wide Band Narrow Band Channel Tunable Freguency Fre Freq Freq Freq Freq Freq Freq Freq Freq Freq T 2 3 4 5 1 2 3 4 5 TX Circuit o maa TU AE e DL CTCSS Deviation Y Y Y low CTCSS Deviation lt lt lt medium i CTCSS Deviation 7 Y Y Y high g og EE ES lt TX Low Voltage Threshold Y E Max TX NENENENE EH EN EN lt lt lt Audio Deviation RX Circuit RX Low Voltage 10 Y Threshold Service Manual Tuning Description 11 Max RX Audio Power Note Y indicates freguencies available for tuning and
47. 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 us 64 HYT is the trademark or registered trademark of Hytera Communications Corp Ltd 2012 Hytera Corp Ltd All Rights Reserved Address HYT Tower Hi Tech Industrial Park North Beihuan RD Nanshan District Shenzhen China Postcode 518057 http www hytera com L07157 2012 08 08 8130032000400

TC-320 RDA Service manual

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