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VHF (136-174 MHz) 

Circuit Description 

 

21 

 

Tx/Rx Switch

S21:-0.2dB

S21:<  -0.8dB

BW(-3dB):570MHZ

Stop band attenuation :-54dBc

AD9864

Band-pass Filter1

Low-Noise Amp

Band-pass Filter2

Mixer

IF Filter

IF Processor

IF Amp

OSC level:> 4dBm

S21:12dB

NF:<  3dB

Stop band attenuation(-2&IF1st) :-80dBc

IIP3:>  5dBm

TV1 /APC

S21:-7dB

NF:<  -7dB

IIP3:>  20dBm

Center 

Freq:73.35MHZ

S21:<  -5dB

Adjacent 

rejection(@25KHZ)

:>  42dBc

Stop band 

attenuation(@-

4.5M):-85dBc

Gain:22dB
Po(-1dB):-22dBm
staic Ic:3.5mA

I/Q singal

S21:18dB

NF:<  1.2dB

IIP3:>  0dBm

S21:-2dB

S21:-5dB

Pi Attenuator

1   

2   

IL:0.5dB

Zin/Zout:470

R

Stop band filter

attenuation 

coefficent >20dBc for 

1st  spurious image 

frequence

OMAP

Ref.Osc

19.2MHz

4CH DAC

TLV5614

P

i A

tt

enuat

or

1   

2   

ANT

LPF

TV/APC

MCBSP2

RX 

VCO

 

Receiver Front-end 

The HF signal from the low-pass filter passes through the electrically tunable band-pass filter controlled 
via APC/TV1 level, to remove out-of-band interference signal and to send wanted band-pass signal to 
the low-noise amplifier (Q6005). The amplified signal goes to a band-pass filter controlled via APC/TV1 
level, to remove out-of-band interference signal generated during amplification, and to send wanted HF 
signal to the mixer.   

The wanted signal passes through the RF band-pass filter and low-noise amplifier and goes to the mixer 
(D6009). Meanwhile, the first local oscillator (LO) signal generated by VCO passes through the low-pass 
filter and also goes to the mixer (D6009). In the mixer, the wanted signal and the first LO signal are 
mixed to generate the first IF signal (44.85MHz). Then the signal passes through the frequency selection 
network composed of LC, to suppress carriers other than the first IF signal, and to increase the isolation 
between the mixer and the IF filter. After that, the first IF signal is processed by the crystal filter (Z6001), 
and is sent to the two-stage IF amplifier circuit (composed of PBR941) for amplification. Then the 
amplified signal goes to the IF processor AD9864 (U6001) for processing.   

Содержание PD502

Страница 1: ...PORTABLE...

Страница 2: ...e product repair It is intended for use by qualified technicians only To repair the product properly please read this manual carefully before repairing This manual is applicable to the following produ...

Страница 3: ...y rights including patent rights copyrights and trade secrets of Digital Voice Systems Inc This voice coding technology is licensed solely for use within this product The user of this technology is ex...

Страница 4: ...s situations that could cause major personal injury or even death Notational Conventions Convention Description The quotation marks enclose the name of a software interface element For example click O...

Страница 5: ...VHF 136 174 MHz...

Страница 6: ...dule 18 5 2 RF Section 19 5 2 1 Transmitter Circuit 19 5 2 2 Receiver Circuit 20 5 2 3 FGU 22 6 Troubleshooting Flow Chart 24 6 1 Control Circuit 24 6 2 Receiver Circuit 26 6 3 Transmitter Circuit 27...

Страница 7: ...Controls No Part Name No Part Name 1 PTT Push to Talk Key 7 Accessory connector 2 SK1 Side Key 1 8 Microphone 3 Channel Selector Knob 9 Battery Latch 4 Speaker 10 Antenna 5 LED Indicator 11 Belt Clip...

Страница 8: ...roof ring properly during reassembly After reassembly please check the waterproof performance of the radio using the waterproof test instrument specified by the Company Step 1 Remove the battery Step...

Страница 9: ...4 MHz Disassembly and Assembly 3 Step 4 Loosen the two screws on the bottom of the aluminum chassis Step 5 Remove the aluminum chassis along with the main board Step 6 Loosen the seven screws on the m...

Страница 10: ...VHF 136 174 MHz Disassembly and Assembly 4 Step 7 Desolder the soldering joint of the antenna and remove the main board...

Страница 11: ...8 6201905000000 Speaker fixing sheet 1 28 7500272000000 Heat sink pad 1 9 7400633000000 Speaker supporting PC sheet 1 29 6100505000010 Waterproof ring for battery connector 1 10 4323020000020 Volume s...

Страница 12: ...VHF 136 174 MHz Exploded View and Packaging Guide 6 Note Parts that are not marked with Part Number may vary with the frequency band...

Страница 13: ...VHF 136 174 MHz Exploded View and Packaging Guide 7 3 2 Packaging Guide...

Страница 14: ...rs Digital 15 hours Operating Temperature 30 to 60 Dimension H W D with standard battey without antenna 117 55 28 mm Weight with antenna standard battey About 280 g Frequency Stability 1 5 ppm Receive...

Страница 15: ...due to continuous development Blocking 84 dB Rated Audio Power Output 0 5 W 16 load Rated Audio Distortion 3 Transmitter Power Output 5 W 1 W Conducted Radiated Emission 36 dBm 1 GHz 30 dBm 1 GHz Mod...

Страница 16: ...0M 1 1V 2 5 V Externa l 2 3V 2 5V 2 7V Pro 2 5 V 1 25V Pro 1 25V 0 5V 6 V 3V 3 3V 3 6V 3V 4 2V 3V 3 3V 3 6V VDDQ1 7V 1 8V 1 95 V Operation Mode SDRAM VDDQ2 7V 3 1 V Read while write Nor Flash PsRAM VC...

Страница 17: ...nd the power is cut off Power Protection Power protection includes over current reverse voltage and ESD protection Power Consumption Control OMAP can control and configure the power supply and working...

Страница 18: ...VHF 136 174 MHz Circuit Description 12...

Страница 19: ...PWM0 PWT uWire BCLK 19 2MHz McBSP3 McBSP2 TX MCSI1 GPIO CS0 CS3 UART1 To PLL TX DAC TLV5614 CS1 McBSP1 CS0 MCLK BUZZ_IN USB IF APC Final_bias MOD TX_RF_CS 32 768KHz XTAL UART3 UART2 I2C IF RX AD9864...

Страница 20: ...5 A0 A10 SDRAM BA1 SDRAM BA0 CAS SDRAM CS RAS LDQM UDQM WE CLK CKE A1 A24 D0 D15 RESET OE WE WP FLASH RDY CE EMIFS EMIFS can support 16 bit external device width and provides four chip selects CS0 CS3...

Страница 21: ...system timing and sleeping 19 2 MHz Clock It is the system clock and is mainly used for providing input clock for APLL and DPLL Output Clock There is one output clock MCLK MCLK provides 16 MHz clock t...

Страница 22: ...works in master mode MCBSP3 is connected to the interface for option board The connection of MCBSP is shown below MCBSP3 FSX P18 MCBSP3 DX W14 MCBSP3 DR AA17 MCBSP2 CLKX Y6 MCBSP2 FSX W7 CODEC IIS_WCL...

Страница 23: ...C is shown below MICROWIRE OMAP5912 provides a MICROWIRE The four chip selects can drive four external components MICROWIRE is used to configure the audio codec and read the value of its register It...

Страница 24: ...decoding digital signal decoding and digital audio signal processing AD9864 converts and processes the RF IF signal and sends the undemodulated serial digital signal to the DSP for processing Then TLV...

Страница 25: ...y DAC of the codec Finally the signal is amplified by the external audio amplifier TDA2822 to drive the speaker and the audio signal is output OMAP5912 Audio is processed via DSP UWIRE SCLK UWIRE CS3...

Страница 26: ...multiple amplifiers the signal will pass through a microstrip matcher to complete output impedance matching so as to reduce output power loss due to impedance mismatch Step 4 Finally the signal passes...

Страница 27: ...of band interference signal and to send wanted band pass signal to the low noise amplifier Q6005 The amplified signal goes to a band pass filter controlled via APC TV1 level to remove out of band inte...

Страница 28: ...AP5912 for demodulation AD9864 employs reference frequency of 19 2 MHz and shares the crystal with OMAP The second LO VCO comprises an oscillator a varactor and some other components to provide the LO...

Страница 29: ...voltage is sent to the varactor of VCO It adjusts the output frequency of VCO directly until the CV voltage becomes constant Then PLL is locked and the stable frequency output by VCO goes to the TX R...

Страница 30: ...U306 U303 and control circuit LED works normally 3V3D is normal Replace LED Check U2013 U309 Reset Check U305 Yes No Yes No Yes Yes No No Yes No No 19 2MHz crystal oscillator is normal 3 The control c...

Страница 31: ...shooting Flow Chart 25 1 After the radio powers on the LED indicator and alert tone works properly 2 The RF power supply outputs normally and the RX channel is on 3 Output by the crystal oscillator Vp...

Страница 32: ...05 Check Q6006 Q6007 The static working point of Q6005 is normal 3 The static working point of Q6006 Q6007 is normal 4 Input IF signal via U6001PIN47 to check whether IF sensitivity is normal 5 18MHz...

Страница 33: ...he IF sensitivity is 109 dBm 6 Frequency of Q6003 44 85 MHz 7 Frequency of L6013 18 MHz 8 Input a 30 dBm RF signal and test at RP1 Normally gain 10 dB output signal 20 dBm 9 Input a 30 dBm RF signal i...

Страница 34: ...ower is normal Power is normal Power is normal Repair damaged components Power is normal TV APC is normal 3 Check the power supply circuit TX_En is normal 5 TX_En 3 3V is normal 4 Replace Q7001 and U7...

Страница 35: ...The low pass coil must be soldered appropriately and remain in good condition The spring plate for the antenna must well fit the antenna connector 8 The match components must not be soldered inappropt...

Страница 36: ...al oscillates Check 19 2MHz circuit Sky 72310 clock is normal 6 CV is normal 3 Replace Q8007 Q8007 is normal 5 L8018 L8045 is normal 4 Replace L8018 L8045 Replace Q8004 Q8008 Q8004 Q8008 is normal 2 Q...

Страница 37: ...2 During transmission voltage at Q8008 E about 1 8 V During reception voltage at Q8004 E about 1 8 V 3 The CV value varies with frequencies Generally it is within the range 0 5 4 5 V 4 L8018 L8045 is...

Страница 38: ...erface Definition 32 7 Interface Definition 7 1 J801 and J802 Double Pin Interface for Earpiece Programming and Downloading Pin Pin No Signal Function J801 1 SPK 2 USB 3 SPK 4 SPK 5 SPK J802 1 GND 2 M...

Страница 39: ...TA TX and double click Reference Oscillator Warp from the navigation tree on the left Then click the Transmit On button 3 Observe the frequency displayed on HP8921 and adjust the vernier on Tuner unti...

Страница 40: ...deviation is 5 k 50 Hz 5 Click the Transmit Off button 6 Click the Save button to save your settings Modulation Balance 1 Connect the antenna connector of the radio with HP8921 and set HP8921 to TX t...

Страница 41: ...z De Emphasis 750 us 4 Observe the value displayed on the HP8921 and adjust the vernier on the Tuner until the SINAD value is more than 14 dB 5 Set the HP8921 parameters as follows Output RF signal 25...

Страница 42: ...Hz Transmit Power 4 7 0 3 W FSK Error 5 Magnitude Error 1 Receiving Step 1 Open the Tuner software and go to TEST RX and double click Receiver BER 0 153 from the navigation tree on the left to open Re...

Страница 43: ...PCB 3 9 PCB VHF 136 174 MHz...

Страница 44: ...PCB 3 VHF 136 174 MHz...

Страница 45: ...VHF 136 174 MHz Block Diagram 3 10 Block Diagram Radio General Diagram OMAP RX FGU Power Supply CODE TLV320AIC29IRGZ IF Processor ADC9864 SDRAM Flash TX MIC SPK Baseband Switch...

Страница 46: ...d attenuation 54dBc AD9864 Band pass Filter1 Low Noise Amp Band pass Filter2 Mixer IF Filter IF Processor IF Amp OSC level 4dBm S21 12dB NF 3dB Stop band attenuation 2 IF1st 80dBc IIP3 5dBm TV1 APC S2...

Страница 47: ...TV APC OMAP MCBSP2 BB System Audio Codec TLV320AIC29IRGZ OMAP5912 E M I F S E M I F F Nor FLASH and PsRAM 128MBit 32MBit S29GL128S10GHIV20 Mobile SDRAM 128Mb 8Mx16 W987D6HBGX6I Datax16 Datax16 Speed 9...

Страница 48: ...65V 1 8V 1 95V 2V 3 6V MCLK 100M 2V 3 6V MCLK 50M 1 1V 2 5V External 2 3V 2 5V 2 7V Pro 2 5V 1 25V Pro 1 25V 0 5V 6V 3V 3 3V 3 6V 3V 4 2V 3V 3 3V 3 6V VDDQ 1 7V 1 8V 1 95V Operation Mode SDRAM VDDQ 2...

Страница 49: ...2 OSC32K_OUT AA13 OSC32K_IN V13 CLK32K_IN P13 OSC1_OUT W3 OSC1_IN Y2 MPU_RST U20 PWRON_RESET R12 MCLK GPIO24 V5 BCLK GPIO17 Y15 CLK32K_OUT GPIO36 MPUIO0 UART1 TX R13 BFAIL EXT_FIQ UART3 CTS W19 RST_OU...

Страница 50: ...MPUIO6 W11 GPIO58 R11 GPIO6 MCSI1 DIN TIMER EVENT3 P19 GPIO4 SPIF DIN TIMER EVENT4 P20 GPIO29 LCD P8 D17 GPIO30 LCD P9 D16 GPIO31 LCD P10 C17 GPIO32 LCD P11 B17 GPIO33 LCD P12 G13 GPIO34 LCD P13 A17...

Страница 51: ...1 270pF C1049 0 1uF C1049 0 1uF C1055 0 22uF C1055 0 22uF R1025 NC R1025 NC C1050 0 1uF C1050 0 1uF U1002A OMAP5912ZZG 1 U1002A OMAP5912ZZG 1 FLASH A1 J8 FLASH A2 D3 FLASH A3 C1 FLASH A4 E4 FLASH A5 D...

Страница 52: ...O19 AA5 MCBSP2 DX GPIO22 P10 KP R0 MPUIO8 G18 KP R1 MPUIO9 F19 KP R2 MPUIO10 H14 KP R3 MPUIO13 E20 KP R4 MPUIO15 E19 KB C0 MPUIO0 F18 KB C1 MPUIO6 D20 KB C2 GPIO61 D19 KB C3 GPIO63 E18 KB C4 GPIO27 C2...

Страница 53: ...2 CE 3 Nc 1 Vout 5 C316 4 7u C316 4 7u F300 3A 32V F300 3A 32V 1 2 R308 47k R308 47k C348 22uF C348 22uF TP303 TP303 1 TP307 TP307 1 C339 2 2u C339 2 2u C355 0 1u C355 0 1u C307 0 22u C307 0 22u C327...

Страница 54: ...R803 10k TP812 TP812 1 C830 0 1u C830 0 1u L808 BLM18AG601SN1 L808 BLM18AG601SN1 C802 0 01u C802 0 01u D803 PESD12VS1UB D803 PESD12VS1UB TP805 SPK TP805 SPK 1 D806 1SS356 D806 1SS356 1 2 C807 0 1u C80...

Страница 55: ...K R6003 82K C6011 0 022uF C6011 0 022uF D6002 HVC350B D6002 HVC350B 2 1 C6013 0 01uF C6013 0 01uF L6011 4 7uH L6011 4 7uH C6047 39pF C6047 39pF L6001 BLM18AG601SN1 L6001 BLM18AG601SN1 C6037 0 01uF C60...

Страница 56: ...C6101 120pF C6071 NC C6071 NC C6074 2 7pF C6074 2 7pF C6093 270pF C6093 270pF R6035 51 R6035 51 R6047 5 6 R6047 5 6 C6070 NC C6070 NC L6022 17nH L6022 17nH L6030 82nH L6030 82nH L6028 470nH L6028 470...

Страница 57: ...NC C7016 1000pF C7016 1000pF C7004 470pF C7004 470pF R7005 1k R7005 1k C7019 470pF C7019 470pF R7049 1K R7049 1K R7050 0 R7050 0 Q7010 EM6M2 Q7010 EM6M2 6 2 1 4 5 3 R7041 150K R7041 150K DTC114EE Q70...

Страница 58: ...3k C7043 1 5p C7043 1 5p C7032 NC C7032 NC L7012 BLM18AG601SN1 L7012 BLM18AG601SN1 Q7003 RD07MUS2B Q7003 RD07MUS2B 3 1 2 C7061 470pF C7061 470pF L7007 NC BLM15PD121SN1 L7007 NC BLM15PD121SN1 1 2 L7906...

Страница 59: ...53 1uF C8053 1uF VCC OUT VCONT GND X8001 DSA321SDA VCC OUT VCONT GND X8001 DSA321SDA 1 2 3 4 5 6 C8013 0 1uF C8013 0 1uF C8033 1uF C8033 1uF R8020 1k R8020 1k C8028 470pF C8028 470pF U8004 TLV5614IPW...

Страница 60: ...8047 82K R8047 82K C8143 6pF C8143 6pF R8051 8 2k R8051 8 2k C8073 470pF C8073 470pF C8100 120pF C8100 120pF R8063 5 6 R8063 5 6 C8112 NC C8112 NC C8111 NC C8111 NC C8096 33pF C8096 33pF D8014 HVC131...

Страница 61: ...3101051040060 0 1uF 534 D8017 T3H 3399030000010 PIN diode 22 C1022 T1J 3101012240010 0 22uF 535 D8019 T5H 3304010100180 Varactor 23 C1023 T1J 3101051050160 1uF 536 D802 B2C 3399040600020 ESD protecti...

Страница 62: ...L6012 B2H 3221505121010 Ferrite bead 73 C1069 B3J 3101052710000 270pF 586 L6013 B3H 3217107392000 3 9uH 74 C1070 T2K 3101052710000 270pF 587 L6014 T3G 3221505121010 Ferrite bead 75 C1071 B3J 310105271...

Страница 63: ...0000 4 7uF 645 L8024 B2G 3221505121010 Ferrite bead 133 C343 B4F 3101051010030 100pF 646 L8025 T4H 3217106781000 780nH 134 C344 B4F 3101061050020 1uF 647 L8026 B4F 3210306101000 100nH 135 C345 B4F 310...

Страница 64: ...8 Q8004 T4I 3408002000080 NPN transistor 186 C6011 T2H 3101012230010 0 022uF 699 Q8005 B2G 3403999000070 Compound transistor 187 C6012 T3H 3101054700010 47pF 700 Q8006 B3G 3609003999000 MMIC amplifier...

Страница 65: ...9 R1045 T3K 3001013300000 33 237 C6063 T2C 3101052000020 20pF 750 R1046 B1D 3001053300000 33 238 C6064 T2C 3101050600010 6pF 751 R1047 B2J 3001011030080 10K 239 C6065 T2C 3101052000020 20pF 752 R1048...

Страница 66: ...0050 4 7K 291 C7028 T4C 3101062210000 220pF 804 R6009 B3G 3001015100060 51 292 C7029 T3C 3101061020000 1000pF 805 R6010 T3H 3001011030080 10K 293 C7031 T4E 3101061010010 100pF 806 R6011 T3G 3001013910...

Страница 67: ...7 R7030 T4F 3001055100020 51 345 C803 B2J 3101052240010 0 22uF 858 R7031 T4G 3001055620000 5 6K 346 C8030 B4H 3101073940000 0 39uF 859 R7032 B4F 3001051210010 120 347 C8031 B4H 3101073940000 0 39uF 86...

Страница 68: ...101053900000 39pF 911 R8033 T5J 3001011020060 1K 399 C8089 B2G 3101011040080 0 1uF 912 R8034 T4J 3001011030080 10K 400 C809 B3I 3101051050160 1uF 913 R8035 T5J 3001011040030 100K 401 C8090 B2G 3101011...

Страница 69: ...2 2pF 964 R8082 T3I 3001014730010 47K 452 C814 B1F 3101052710000 270pF 965 R8083 T5J 3001011030080 10K 453 C8140 T4J 3101014710010 470pF 966 R809 B2J 3001054740010 470K 454 C8141 T3I 3101012290010 2...

Страница 70: ...3399040600000 ESD protection diode 1009 U304 B3F 3608015000270 Power management IC 497 D107 B4B 3399040600000 ESD protection diode 1010 U305 T3K 3608006000030 Power management IC 498 D108 B5A 3399040...

Страница 71: ...UHF1 400 470 MHz...

Страница 72: ...3 Audio Module 18 5 2 RF Section 19 5 2 1 Transmitter Circuit 19 5 2 2 Receiver Circuit 21 5 2 3 FGU 22 6 Troubleshooting Flow Chart 24 6 1 Control Circuit 24 6 2 Receiver Circuit 26 6 3 Transmitter C...

Страница 73: ...Controls No Part Name No Part Name 1 PTT Push to Talk Key 7 Accessory Connector 2 SK1 Side Key 1 8 Microphone 3 Channel Selector Knob 9 Battery Latch 4 Speaker 10 Antenna 5 LED Indicator 11 Belt Clip...

Страница 74: ...rproof ring properly during reassembly After reassembly please check the waterproof performance of the radio using the waterproof test instrument specified by the Company Step 1 Remove the battery Ste...

Страница 75: ...70MHz Disassembly and Assembly 3 Step 4 Loosen the two screws on the bottom of the aluminum chassis Step 5 Remove the aluminum chassis along with the main board Step 6 Loosen the seven screws on the m...

Страница 76: ...UHF1 400 470MHz Disassembly and Assembly 4 Step 7 Desolder the soldering joint of the antenna and remove the main board...

Страница 77: ...1905000000 Speaker fixing sheet 1 28 7500272000000 Heat sink pad 1 9 7400633000000 Speaker supporting PC sheet 1 29 6100505000010 Waterproof ring for battery connector 1 10 4323020000020 Volume switch...

Страница 78: ...UHF1 400 470MHz Exploded View and Packaging Guide 6 Note Parts that are not marked with Part Number may vary with the frequency band...

Страница 79: ...UHF1 400 470MHz Exploded View and Packaging Guide 7 3 2 Packaging Guide...

Страница 80: ...Digital 15 hours Operating Temperature 30 60 Dimension H W D with standard battey without antenna 117 55 28 mm Weight with antenna standard battey About 280 g Frequency Stability 1 5 ppm Receiver Sens...

Страница 81: ...due to continuous development Blocking 84 dB Rated Audio Power Output 0 5 W 16 load Rated Audio Distortion 3 Transmitter Power Output 4 W 1 W Conducted Radiated Emission 36 dBm 1 GHz 30 dBm 1 GHz Mod...

Страница 82: ...0M 1 1V 2 5 V Externa l 2 3V 2 5V 2 7 V Pro 2 5 V 1 25V Pro 1 25V 0 5V 6 V 3V 3 3V 3 6V 3V 4 2V 3V 3 3V 3 6V VDDQ1 7V 1 8V 1 95 V Operation Mode SDRAM VDDQ2 7V 3 1 V Read while write Nor Flash PsRAM V...

Страница 83: ...nd the power is cut off Power Protection Power protection includes over current reverse voltage and ESD protection Power Consumption Control OMAP can control and configure the power supply and working...

Страница 84: ...UHF1 400 470MHz Circuit Description 12...

Страница 85: ...PWM0 PWT uWire BCLK 19 2MHz McBSP3 McBSP2 TX MCSI1 GPIO CS0 CS3 UART1 To PLL TX DAC TLV5614 CS1 McBSP1 CS0 MCLK BUZZ_IN USB IF APC Final_bias MOD TX_RF_CS 32 768KHz XTAL UART3 UART2 I2C IF RX AD9864...

Страница 86: ...5 A0 A10 SDRAM BA1 SDRAM BA0 CAS SDRAM CS RAS LDQM UDQM WE CLK CKE A1 A24 D0 D15 RESET OE WE WP FLASH RDY CE EMIFS EMIFS can support 16 bit external device width and provides four chip selects CS0 CS3...

Страница 87: ...d for system timing and sleeping 19 2 MHz System Clock It is mainly used to provide the input clock for APLL and DPLL Output Clock There is one output clock MCLK MCLK provides 16 MHz clock to audio co...

Страница 88: ...works in master mode MCBSP3 is connected to the interface for option board The connection of MCBSP is shown below MCBSP3 FSX P18 MCBSP3 DX W14 MCBSP3 DR AA17 MCBSP2 CLKX Y6 MCBSP2 FSX W7 CODEC IIS_WCL...

Страница 89: ...on of I2 C is shown below MICROWIRE OMAP5912 provides a MICROWIRE The four chip selects can drive four external components MICROWIRE is used to configure the audio codec and read the value of its regi...

Страница 90: ...decoding digital signal decoding and digital audio signal processing AD9864 converts and processes the RF IF signal and sends the undemodulated serial digital signal to the DSP for processing Then TLV...

Страница 91: ...y DAC of the codec Finally the signal is amplified by the external audio amplifier TDA2822 to drive the speaker and the audio signal is output OMAP5912 Audio is processed via DSP UWIRE SCLK UWIRE CS3...

Страница 92: ...or final power amplification Step 3 After amplified by multiple amplifiers the signal will pass through a microstrip matcher to complete output impedance matching so as to reduce output power loss due...

Страница 93: ...t stage band pass filter controlled via APC TV1 level to remove out of band interference signal and to send wanted band pass signal to the low noise amplifier Q6005 The amplified signal goes to a seco...

Страница 94: ...SP OMAP5912 for demodulation AD9864 employs reference frequency of 19 2 MHz and shares the crystal with OMAP The second LO VCO comprises an oscillator a varactor and some other components to generate...

Страница 95: ...justs the output frequency of VCO directly until the CV voltage becomes constant Then PLL is locked and the stable frequency output by VCO goes to the TX RX channel after passing through two buffer am...

Страница 96: ...ks normally 3V3D is normal Replace LED Check U2013 U309 Reset Check the power on circuit and U2014 Check U305 Yes No Yes No Yes Yes No No Yes No No 19 2MHz crystal oscillator is normal 3 1V3D is norma...

Страница 97: ...UHF1 400 470MHz Troubleshooting Flow Chart 25 2 The RF power supply outputs normally and the RX channel is on 3 Output by the crystal oscillator Vpp 700 800 mV F 19 2 MHz...

Страница 98: ...6005 is normal 3 The static working point of Q6006 Q6007 is normal 4 Input IF signal via U6001PIN47 to check whether IF sensitivity is normal 5 LO signal output is normal 9 First IF output is normal 1...

Страница 99: ...8 MHz 7 Frequency of L6013 18 MHz 8 Input a 30 dBm RF signal in the antenna port and test at RP1 Normally gain 10 dB output signal 20 dBm 9 Input a 30 dBm RF signal in the antenna port and test at C6...

Страница 100: ...is normal 4 TX_En is normal 5 Replace Q7001 and U7001 Replace Q7009 and Q7010 Check the power supply circuit Power level is normal 6 D7001 spring plate for antenna and the low pass network are normal...

Страница 101: ...tart up voltage of D7001 about 0 7 V The low pass coil must be soldered appropriately and remain in good condition The spring plate for the antenna must well fit the antenna connector 8 The match comp...

Страница 102: ...normal 3 Q8007 is normal 5 Replace Q8007 Check Q8007 and peripheral components Q8002 Q8003 are normal 1 Replace Q8002 and Q8003 Q8004 Q8008 are normal 2 Check Q8004 Q8008 and peripheral components Rep...

Страница 103: ...out 4 V During reception output voltage by Q8003 PIN3 about 4 V 2 During transmission voltage at Q8008 E about 1 8 V During reception voltage at Q8004 E about 1 8 V 3 The CV value varies with frequenc...

Страница 104: ...MHz Interface Definition 32 7 Interface Definition 7 1 Double Pin Interface for Earpiece Programming and Downloading Pin Pin No Signal Function J801 1 SPK 2 USB 3 SPK 4 SPK 5 SPK J802 1 GND 2 MIC 3 US...

Страница 105: ...ve button to save your settings Transmit Power Calibration 1 Connect the antenna connector of the radio with the HP8921 and set the HP8921 to TX test mode 2 Open the Tuner software go to TUNE_DATA TX...

Страница 106: ...o with the Audio In port of the HP8921 and set the HP8921 to RX test mode 3 Set the HP8921 as follows Output RF signal 118 dBm Frequency current channel frequency Modulation frequency 1 kHz Modulation...

Страница 107: ...Error 100 Hz Transmit Power 4 2 0 3 W FSK Error 5 Magnitude Error 1 Receiving Step 1 Open the Tuner software and go to TEST RX and double click Receiver BER 0 153 from the navigation tree on the left...

Страница 108: ...UHF1 400 470MHz PCB 36 9 PCB...

Страница 109: ...UHF1 400 470MHz PCB 37...

Страница 110: ...UHF1 400 470MHz Block Diagram 38 10 Block Diagram Radio General Diagram OMAP RX FGU Power Supply CODE TLV320AIC29IRGZ IF Processor ADC9864 SDRAM Flash TX MIC SPK Baseband Switch...

Страница 111: ...attenuation 54dBc AD9864 Band pass Filter1 Low Noise Amp Band pass Filter2 Mixer IF Filter IF Processor IF Amp OSC level 4dBm S21 12dB NF 3dB Stop band attenuation 2 IF1st 80dBc IIP3 5dBm TV1 APC S21...

Страница 112: ...E TV APC OMAP MCBSP2 BB System Audio Codec TLV320AIC29IRGZ OMAP5912 E M I F S E M I F F Nor FLASH and PsRAM 128MBit 32MBit S29GL128S10GHIV20 Mobile SDRAM 128Mb 8Mx16 W987D6HBGX6I Datax16 Datax16 Speed...

Страница 113: ...1 65V 1 8V 1 95V 2V 3 6V MCLK 100M 2V 3 6V MCLK 50M 1 1V 2 5V External 2 3V 2 5V 2 7V Pro 2 5V 1 25V Pro 1 25V 0 5V 6V 3V 3 3V 3 6V 3V 4 2V 3V 3 3V 3 6V VDDQ 1 7V 1 8V 1 95V Operation Mode SDRAM VDDQ...

Страница 114: ...OSC32K_OUT AA13 OSC32K_IN V13 CLK32K_IN P13 OSC1_OUT W3 OSC1_IN Y2 MPU_RST U20 PWRON_RESET R12 MCLK GPIO24 V5 BCLK GPIO17 Y15 CLK32K_OUT GPIO36 MPUIO0 UART1 TX R13 BFAIL EXT_FIQ UART3 CTS W19 RST_OUT...

Страница 115: ...MPUIO6 W11 GPIO58 R11 GPIO6 MCSI1 DIN TIMER EVENT3 P19 GPIO4 SPIF DIN TIMER EVENT4 P20 GPIO29 LCD P8 D17 GPIO30 LCD P9 D16 GPIO31 LCD P10 C17 GPIO32 LCD P11 B17 GPIO33 LCD P12 G13 GPIO34 LCD P13 A17 G...

Страница 116: ...1 270pF C1049 0 1uF C1049 0 1uF C1055 0 22uF C1055 0 22uF R1025 NC R1025 NC C1050 0 1uF C1050 0 1uF U1002A OMAP5912ZZG 1 U1002A OMAP5912ZZG 1 FLASH A1 J8 FLASH A2 D3 FLASH A3 C1 FLASH A4 E4 FLASH A5 D...

Страница 117: ...19 AA5 MCBSP2 DX GPIO22 P10 KP R0 MPUIO8 G18 KP R1 MPUIO9 F19 KP R2 MPUIO10 H14 KP R3 MPUIO13 E20 KP R4 MPUIO15 E19 KB C0 MPUIO0 F18 KB C1 MPUIO6 D20 KB C2 GPIO61 D19 KB C3 GPIO63 E18 KB C4 GPIO27 C21...

Страница 118: ...2 CE 3 Nc 1 Vout 5 C316 4 7u C316 4 7u F300 3A 32V F300 3A 32V 1 2 R308 47k R308 47k C348 22uF C348 22uF TP303 TP303 1 TP307 TP307 1 C339 2 2u C339 2 2u C355 0 1u C355 0 1u C307 0 22u C307 0 22u C327...

Страница 119: ...803 10k TP812 TP812 1 C830 0 1u C830 0 1u L808 BLM18AG601SN1 L808 BLM18AG601SN1 C802 0 01u C802 0 01u D803 PESD12VS1UB D803 PESD12VS1UB TP805 SPK TP805 SPK 1 D806 1SS356 D806 1SS356 1 2 C807 0 1u C807...

Страница 120: ...R6003 82K C6011 0 022uF C6011 0 022uF D6002 HVC350B D6002 HVC350B 2 1 C6013 0 01uF C6013 0 01uF L6011 4 7uH L6011 4 7uH C6047 39pF C6047 39pF L6001 BLM18AG601SN1 L6001 BLM18AG601SN1 C6037 0 01uF C6037...

Страница 121: ...6101 120pF C6071 NC C6071 NC C6074 2 7pF C6074 2 7pF C6093 270pF C6093 270pF R6035 51 R6035 51 R6047 5 6 R6047 5 6 C6070 NC C6070 NC L6022 17nH L6022 17nH L6030 82nH L6030 82nH L6028 470nH L6028 470nH...

Страница 122: ...C C7016 1000pF C7016 1000pF C7004 470pF C7004 470pF R7005 1k R7005 1k C7019 470pF C7019 470pF R7049 1K R7049 1K R7050 0 R7050 0 Q7010 EM6M2 Q7010 EM6M2 6 2 1 4 5 3 R7041 150K R7041 150K DTC114EE Q7009...

Страница 123: ...k C7043 1 5p C7043 1 5p C7032 NC C7032 NC L7012 BLM18AG601SN1 L7012 BLM18AG601SN1 Q7003 RD07MUS2B Q7003 RD07MUS2B 3 1 2 C7061 470pF C7061 470pF L7007 NC BLM15PD121SN1 L7007 NC BLM15PD121SN1 1 2 L7906...

Страница 124: ...1uF C8053 1uF VCC OUT VCONT GND X8001 DSA321SDA VCC OUT VCONT GND X8001 DSA321SDA 1 2 3 4 5 6 C8013 0 1uF C8013 0 1uF C8033 1uF C8033 1uF R8020 1k R8020 1k C8028 470pF C8028 470pF U8004 TLV5614IPW U8...

Страница 125: ...047 82K R8047 82K C8143 6pF C8143 6pF R8051 8 2k R8051 8 2k C8073 470pF C8073 470pF C8100 120pF C8100 120pF R8063 5 6 R8063 5 6 C8112 NC C8112 NC C8111 NC C8111 NC C8096 33pF C8096 33pF D8014 HVC131 D...

Страница 126: ...H 3304010100890 Varactor 22 C1022 T3J 3101012240010 0 22uF 524 D8013 T5H 3399030000010 PIN diode 23 C1023 T3J 3101051050160 1uF 525 D8014 T5I 3399030000010 PIN diode 24 C1024 T4J 3101052710000 270PF 5...

Страница 127: ...4J 3101052710000 270PF 575 L6011 B5H 3210407472000 4 7uH 75 C1071 B4J 3101052710000 270PF 576 L6012 B4H 3221505121010 Ferrite bead 76 C1072 T4J 3101052710000 270PF 577 L6013 B4H 3217107392000 3 9uH 77...

Страница 128: ...10106391000 390nH 134 C344 B6F 3101061050020 1UF 634 L8026 B5F 3210106101000 100nH 135 C345 B6F 3101051040060 0 1UF 635 L8027 B4G 3217106330000 33nH 136 C346 B6G 3101051040060 0 1UF 636 L8028 B5F 3217...

Страница 129: ...0 0 01uF 684 Q8004 T5I 3408002000080 2SC5010 185 C6011 T4H 3101012230010 0 022uF 685 Q8005 B4G 3403999000070 Compound transistor 186 C6012 T4H 3101055600000 56PF 686 Q8006 B5G 3609003999000 UPC8179TK...

Страница 130: ...00000 33 232 C6060 T4E 3101050400010 4PF 732 R1042 B5J 3001013300000 33 233 C6061 T3E 3101050200010 2PF 733 R1043 T4K 3001013300000 33 234 C6062 T3D 3101050400010 4PF 734 R1044 T4K 3001013300000 33 23...

Страница 131: ...1053320010 3300PF 785 R6005 T4H 3001051220090 1 2K 286 C7019 B5F 3101054710010 470PF 786 R6006 T4H 3001017520020 7 5K 287 C7021 T6B 3101060590010 0 5PF 787 R6007 T4H 3001011010080 100 288 C7022 T5C 31...

Страница 132: ...R7024 T6E 3001054700000 47 339 C8025 B6J 3101071060280 10UF 839 R7026 T6E 3001053920010 3 9K 340 C8026 B6J 3101011040080 0 1uF 840 R7027 T6E 3001056820010 6 8K 341 C8027 B6J 3101051000020 10PF 841 R7...

Страница 133: ...T6J 3001016830000 68K 393 C8084 T6H 3101054710010 470PF 893 R8033 T6J 3001011020060 1K 394 C8085 T6I 3101053900000 39PF 894 R8034 T6J 3001011030080 10K 395 C8086 T5H 3101055600000 56PF 895 R8035 T6J 3...

Страница 134: ...10 47K 446 C8136 T5G 3101052000020 20PF 946 R813 B5B 3001051030050 10K 447 C8137 T6H 3101060600010 6PF 947 R815 B3B 3001051020000 1K 448 C8138 T5G 3101054700010 47PF 948 R816 B3B 3001076810000 680 449...

Страница 135: ...04 B5F 3608015000270 Power management IC 487 D 6203393000000 Baseband shielding cover 987 U305 T4K 3608006000030 Power management IC 488 D101 B3A 3307110100070 LED 988 U306 B6G 3608015000270 Power man...

Страница 136: ...1616300000260 2014 03 17 L07157 4...

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