SERVICE MANUAL VECTOR VT- 43 R-2

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Έχω Βασιλειάδης
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1 SERVICE MANUAL VECTOR VT- R-

2 CIRCUIT DESCRIPTION RECEIVER The signal from the antenna is passed through a transmission/reception selector circuit and is amplified by T. The signal after amplified enter to for processing then output the audio, the audio signal is amplified by LM and output by the speaker at last. TRANSMITTER The signal from the microphone passes through,after modulation in the carrier modulation, the modulation signal with the carrier promotes by buffer T,T,and amplified by T then sends to the antenna terminals. TRANSMISSION/RECEPTION SELECTOR CIRCUIT The transmission output is passed through the transmission/reception selector circuit and low-pass filter to the antenna. The transmission/reception selector circuit, which consists of diodes D, DD and D, is turned on during transmission and off during reception to switch the signal. CONTROL CIRCUIT The control circuit consists of a microprocessor (U) and its peripheral circuits. U mainly functions as follow: ) Switching between transmission and reception by the PTT signal input.

)Readingsystem,group,frequency,andprogramdatafromthememorycircuit..Resetandbackupcircuits WhentheSBisturnedon,ahighlevelpulseisoutputfromtheresetcircuitconsistingofT, C, and R to reset microprocessor.

3 )Readingsystem,group,frequency,andprogramdatafromthememorycircuit..Resetandbackupcircuits WhentheSBisturnedon,ahighlevelpulseisoutputfromtheresetcircuitconsistingofT, C, and R to reset microprocessor. If the SB is turned off, the voltage detection MCU detectsavdrop,andoutputsalowsignal,itoutputsdatatou(c)andentersbackup mode..memorycircuit MemorycircuitconsistsoftheMCU(U)andanEEPROM(U).AnEEPROMhasacapacityof kbitsthatcontainsthetransceivercontrolprogramforthemcuanddatasuchastransceiver channelsandoperatingfeatures..batterysavecircuit Thesquelchisoffduringreceive.Thepowercircuitentersbatterysavemodeifnokeyhasbeen pressedforfiveseconds. Thiscircuitiscontrolledbymicroprocessordirectly..LowBatteryWarning Thebatteryvoltageischeckedusingbythemicroprocessor.Thetransceivergeneratesawarning tonewhenitfallsbelowthewarningvoltage..keysandrotaryencodercircuit Thesignalfromkeysandrotaryencoderinputtomicroprocessordirectly.

4 .LCD control circuit The LCD control circuit is turned on or off by directly flowing current to the microprocessor ports. DESCRIPTION MAINLY SECTION DESCRIPTION.DSP consists of IF amplifier, FM modulation, RSSI calculator, AFC control circuit, audio/audio mixer filter, CTCSS/DCS filter and so on..synthesizer mainly functions The synthesizer produces a local oscillator signal, used to switch the RF input to a continuous low medium frequency. Synthesizer provides the base clock to adjust the VCO frequency..base CLOCK ports more base clocks, for example,. MHz,MHz and so on..serial CONTROL INTERFACE

5 AthreelinesserialcontrolinterfaceisusedtoreadthemainICandcontrol record.serialcontrolischaractersinlength,bitnumericstringandbit addressstring. Programmingsoftwaremainfunctions 9 0 EnglishChineseprogrammingsoftware Receivingfrequencyandtransmittingfrequency ReceivingtoneandTransmittingtone TimeOutTimer Squelchlevel(9)selectable Powersave frequencystep Storechannels VOXsensitivity SCANTYPETO/CO/SE

7 R-0-0

8 R-0-0

9 R-0-0

10 R-0-0

11 E D C B A C R R 0K R 0K C 0P D GREEN V V R 0R R K C 0P D LED D LED T DTCEE D RED R 0R R 0R T DTCEE T DTCEE COM COM COM COM SEG0 SEG SEG SEG SEG 9 SEG 0 SEG SEG SEG SEG9 SEG0 SEG SEG SEG SEG 9 SEG 0 SEG SEG SEG SEG9 SEG0 SEG SEG SEG SEG 9 SEG 0 SEG SEG SEG SEG9 SEG0 SEG LCD CS RD WR DATA VSS OSCO OSCI VLCD VDD 9 IRQ 0 BZ BZ COM0 COM COM COM S S0 S9 9 S 0 S S S S S S S S0 S9 9 S 0 S S S S S S S S0 S9 9 S 0 S S S S S S S0 S U HT R 00R R R K C C 0uF/V R K9 R K9 C C CTS_IN SQ/GPO IN IN AVSS XTAL XTAL 9 0 AFOUT AVSS AVSS VOX/GPO PDN INT/GPO SEN SCLK SDIO 9 0 U RDA C P L R0 L 0T C C R R K C 0 C T C C C P C P C 0P C C 0P C R R K R C C 0P C P C R K LNAN RF LNAP XTAL RST SEN SCLK 9 SDIO 0 RCLK VIO ROUT LOUT DVDD GPIO 9 GPIO 0 GPIO U RDA0E R R R R R 00R A0 A DA CK A WP Vcc U C R 00R C C 0uF/V L 0T CHG_DET TXD AFO KEY_IN P-FM KEY_IN LCD_DATA LCD_WR LCD_CS FM_DATA FM_CLK RDA_PDN RDA_EN RDA_CLK RDA_SDA CTC/CDS _DET VOX_DET TX_RF V T SK R9 R K R0 00K C0 C R R T SA C C C P C P L 0R C L 0R CR.0MHz V V KEY_OUT KEY_IN KEY_IN KEY_OUT KEY_IN LCD_CS LCD_WR LCD_DATA BACKLIGHT RLED GLED CTC/CDS OUT SQ AF_MUTE Out VDD U C D R 0R R K C PTT/RXD CHG_DET PTT/RXD R R R C P-FM RESET J RESET J TXD R R J VDD J J PTT/RXD CTC/CDS _DET R 0R T SC L nh R R L 0R C9 P C 0P C C P R R K C R R T SK0 T R 0K C R K T KTC0(HF) T BATTO R R R C 0R C C 0P C 0P R K J RXD P-RX P-RX RT K C 0P RV 0K R K SEG SEG/R SEG/R SEG/R SEG0/R SEG9/R SEG/R SEG/R SEG/R0 9 SEG/R 0 SEG/R SEG/R SEG/R SEG/R SEG0/R SEG09/R SEG0/R0 SEG0/R SEG0/R 9 SEG0/R 0 SEG0/R SEG0/R SEG0/R SEG0/R SEG00/R0 R00/PEM0/T0O R0/BUZO R0/INT0/EC R0/INT 9 R0/INT 0 R0/PWM/TO R/ACK/SCK R R R R R/SDA R/SCL R0/AN0 9 R/AN 0 R/AN R/AN R/AN AVREF R PLLC VDD R R 9 VSS 0 R/XIN R/XOUT R/RESETB COM0 COM COM COM SEG9/COM SEG/COM 9 SEG/COM 0 SEG/COM SEG SEG SEG U MCFL C0 XI XO RESET _D VDD ROM_SDA ROM_SCK BATT TEST KEY_OUT KEY_OUT P-RX KEY_IN KEY_IN KEY_IN PTT/RXD TXD V APC CTC/CDS _DET CTC/CDS OUT BACKLIGHT VOX_DET AF_MUTE FM_DATA FM_CLK DTMF DTMF BEEP R9 00K C9 LCD_CS LCD_WR LCD_DATA RLED GLED VTX_CTR P-FM P-FM SQ CHG_DET RDA_SDA RDA_CLK RDA_EN RDA_PDN BEEP BEEP BACKLIGHT MENU VFO MR ENT D LED R 00R XOUT VC C CR MHz C C0 0P R 0R APC APC R9 K C9 R9 K C9 P C9 P R R R T C

12 C 0P C 0P L 0nH R 0R C C P L 0//T C C P L 0//T L 0//T L 0//T C C P C P C P C P C P C P C R K R 0R SW PTT R K C 0P D HSC D HVC C.uF/V MIC AFO V V L9 T SW MONI R K C 0P SW CALL R K C 0P R9 K TXD AFO D HVC D HSC C9 0uF/V BATTO JP9 JP C 0R C L L 0//T C 0P C L 00nH C P T SC R 00K R 0R L 00nH C 0P C P CTS_IN SQ/GPO IN IN AVSS XTAL XTAL 9 0 AFOUT AVSS AVSS 9 0 RFIN RFOUT PABIAS 9 0 AVSS CTS_OUT VOX/GPO PDN INT/GPO SEN SCLK SDIO 9 0 U RDA L R0 L 0T L.nH C0 C C9 9P T RFM0UCT C0 0P C9 0P C P R 00R R C C L9 0//T L 0T C C 0P C C C C uf T SD Bypass +in -in Vo VDD Vss Vo U LM R 00K R K C 0P C 0uF/V C 0P C 0P E9 0uF/V C9 0P E9 0uF/V Out Gnd Vin CE U9 RP0ND-TR-F P C P C R R R 0R C 0uF/V C 00P C 00P C C 00P C L 0T LNAN RF LNAP XTAL RST SEN SCLK 9 SDIO E T DTAYE P-FM P-FM J BATT RXD CR.KHz CHG_DET TXD AFO KEY_IN P-FM KEY_IN PTT/RXD R C P C9 0P C0 C0 P T9 DTCEE R9 R99 K R K C T T R9 00K L nh L nh C P C P C 0P L nh C 0P C P C P C9 0P C TXD RXD TXD RXD MIC V L0 HL0//T T DTCEE D9 C 0P T SC R 00K R 0R C P T DTAYE P-RX C P C9 N KEY_IN KEY_IN CHG_DET MIC R0 0.9 R0 0.9 R0 0.9 R0 0K R 0K R 0K R 0K R 0K R 0K R R 0K R K R M R 0R R 0K R C C C 0P C 00P C0 C 0P C C 0P U0A LM90V U0B LM90V T DTCEE T DTAYE R C T SK AFO APC APC APC T T V V R C C9 C.uF/V

13 0 A B C D E 0 SW9A RD0S JK ST-0 L 0nH R 0R C P L 0//T C C P L 0//T L 0//T L 0//T L uh C C P C P C P C P C P ANT ANT- C P SW PTT R K C 0P D HSC D HVC SP SP AFO MIC MIC L9 T SW MONI R K C 0P SW CALL R K C 0P R 0R C R9 K TXD AFO D HVC D HSC JK9 DC0090-B C9 0uF/V BATTO JP9 JP SD Bypass +in -in Vo VDD Vss Vo U LM R 00K R K C 0P C 0uF/V C 0P C 0P E9 0uF/V C9 0P E9 0uF/V Out Gnd Vin CE U9 RP0ND-TR-F 0000 VT- R- SCHEMATIC DIAGRAM J BATT RXD R C9 0P T9 DTCEE R9 R99 K C9 0P C9 TXD RXD TXD RXD MIC V C K T DTCEE D9 C9 KEY_IN KEY_IN CHG_DET MIC R0 0.9 R0 0.9 R0 0.9 R0 0K R 0K R 0K R 0K R 0K R 0K R R 0K R K M R 0K R C C C 0P C 00P C0 C 0P C 0P U0A LM90V 0B 90V T DTCEE 0P AFO T T V V R-0-0

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The signal from the antenna is passed through atransmission/reception selector circuit and is

Circuit Description.RECEIVER The signal from the antenna is passed through atransmission/reception selector circuit and is amplified by T7. The signal after amplified enter to 86 for processing then output