dj596_SM.pdf

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1、DJ-596T / DJ-596E Service Manual CONTENTS SPECIFICATIONS 1) GENERAL . 2 2) TRANSMITTER . 2 3) RECEIVER . 2 CIRCUIT DESCRIPTION 1) RX . 35 2) TX. 5 3) M38267M8L(XA0844). 68 SEMICONDUCTOR DATA 1) PC2710T (XA0449) . 9 2) S-81350HG-KD-T1 (XA0724) . 9 3) 24LC32AT-I/SN (XA0604) . 10 4) M5222FP-600C (XA038

2、5) . 10 5) TC4W53FU (XA0348). 11 6) TK10931V (XA0666). 11 7) NJM2902V-TE1 (XA0596) . 12 8) NJM2070M (XA0210) . 12 9) PD3140GS-E1 (XA0312) . 13 10) BA4510FV-E2 (XA0537) . 14 11) S-80845ALMP-EA9-T2 (XA0620) . 14 12) MB88347LPFV-G-BND-EF (XA0599) . 15 13) Transistor, Diode and LED Outline Drawings. 16

3、14) LCD Connection(EL0044). 16 EXPLODED VIEW 1) Front View. 17 2) Rear View . 18 PARTS LIST MAIN Unit . 1924 Mechanical Parts . 24 Packing. 24 ADJUSTMENT 1) Required Test Equipment . 2526 2) Entering and releasing the adjustment mode . 2732 PC BOARD VIEW. 3334 SCHEMATIC DIAGRAM. 35 BLOCK DIAGRAM. 36

4、 ALINCO,INC. 2 SPECIFICATIONS General Type DJ-596T DJ-596E VHF 136.000-173.995MHz 144.000-145.995MHz Receiving Range UHF 400.000-511.995MHz 430.000-439.995MHz VHF 144.000-147.995MHz 144.000-145.995MHz Transmitter Range UHF 420.000-449.995MHz 430.000-439.995MHz Modulation F2, F3 Frequency Stability 5

5、ppm-10C+60C+14 F+140 F) Ant.Impedance 50 Supply Voltage 6.016.0VDC Transmit DC13.8VVHF Approx.1.2AUHF : Approx.1.4A 9.6VEBP-50NVHF : Approx.1.2A, UHFApprox.1.5A Receive Approx.75mA Current Battery Save Approx.25mA Transmitter Type DJ-596T DJ-596E External 13.8V Approx.5W Power Output EBP-50N equippe

6、d VHF4.5W, UHF4W Modulation Variable Reactance Max.Deviation 5kHz Spurious Emission -60dB or less Mic.Impedance Approx.2k Receiver Type DJ-596T DJ-596E System Double-conversion super heterodyne Intermediate Frequencies 1st : 39.15MHz, 2nd : 450kHz Sensitivity (12dB SINAD) 144.000-147.995MHz 420.000-

7、449.995MHz -15.0dB or less 144.000-145.995MHz 430.000-439.995MHz -15.0dB or less AF Output 300mW or over MAX 200mW or over10% Distortion factor 8 Spurious response 60dB or over Squelch sensitivity Approx.-10dB or less () , ( ) : : : () () 3 CIRCUIT DESCRIPTION 1) RX 1. RX Method: Double Super Hetero

8、dyne Method 1st IF:FM 39.15 MHz 2nd IF: 450 kHz 2. Front End VHF The signal input from antenna passes through the duplexer FL1 and low pass filter, then it is amplified at RF amplifier Q17. The amplified signal is led to band pass filter and band switch D19, then input to the mixer Q16. UHF The sign

9、al input from antenna passes through the duplexer FL1 and low pass filter, then it is amplified at RF amplifier Q20. The amplified signal is led to band pass filter and band switch D23, then input to the mixer Q16. 3. Mixer The input signal to the mixer Q16 and the 1st local signal are added or subt

10、racted at mixer Q16, and the crystal filter XF1 selects the signal of 39.15 MHz, then it is amplified at the 1st IF amplifier Q18 after the adja- cent signal is eliminated. The 1st local signal from VCO output is supplied to the base of mixer Q16 passing through the buffer amplifier Q15. The upper s

11、ide band of the local signal is used in VHF band and the lower side band of the local signal is used in UHF band. 4. IF The signal amplified at the 1st IF amplifier Q18 is supplied to pin 24 of IC5 for demodulation. Also the signal of 12.9 MHz from the reference buffer output of IC 2 is multiplied b

12、y 3 at Q19, then it is led to pin 1 of IC5. 2 input signals are mixed in the mixer circuit inside IC5 and converted into the 2nd IF signal of 450 kHz. The 2nd IF signal output from pin 3 of IC5 is supplied to pin 7 of IC5 after the adjacent signal is eliminated at the ceramic filter FL3 in WFM mode,

13、 or at the ceramic filter FL2 in NFM mode. The input 2nd IF signal is demodulated at the limiter amplifier and quadrature detection circuit inside IC, then output from pin 12 of IC5 as an AF signal. 4 5. Squelch Q24 determines the gain of AF signal output from pin 12 of IC5 according to the WFM/NFM

14、of IC8. Then the signal is input to pin 19 of IC5. The input signal passes through the noise filter amplifier and rectifier circuit, then output from pin 21 of IC5. The output signal is supplied to A/D port of microprocessor IC6, then the microprocessor IC6 judges it to control ON/OFF of the audio o

15、utput. 6. Audio Q24 determines the gain of AF signal output from pin 12 of IC5 according to the WFM/NFM of IC8. Thereby amplified signal passes through AF switch IC15 and band pass active filter IC8, then controls AF signal level at the microprocessor IC6 with the electronic volume IC10. The control

16、led AF signal is supplied to the audio power amplifier IC9 pin 2. The input AF signal is amplified at IC9 and output from pin 6 to drive the speaker, etc. 7. VCO VHF VCO in VHF band consists of the Colpitts oscillator. D6, D9, L15 and L20 determine the oscillating frequency, and the signal is oscill

17、ated at the transis- tor Q4. L20 is passed at shift transistor Q8 when receiving. The oscillated signal is supplied to pin 2 of PLL-IC2 passing through the buffer amplifier Q7 and Q1. UHF VCO in UHF band consists of the Colpitts oscillator. D16, D18 and L22 determine the oscillating frequency, and t

18、he signal is oscillated at the transis- tor Q12. The oscillated signal is supplied to pin 19 of PLL-IC2 passing through the buffer amplifier Q7 and Q1. 8. PLL PLL-IC2 is used to control the oscillating frequency of VCO. IC2 is controlled by the serial control signal sent from the microprocessor IC6.

19、 The refer- ence frequency of 12.9 MHz from IC2 oscillates the crystal oscillator X1 in- side the circuit. VHF IC2 compares the frequency gained by dividing the signal added to pin 2 of IC2 by the control signal from IC6 with the frequency gained by dividing the reference frequency of 12.9 MHz insid

20、e IC2. When the phase difference is found as a result of phase comparison, the pulse signal is output from the charge pump output of pin 8 of IC2, then the signal is converted into the DC voltage at the passive filter and added to the cathode side of VCO vari-cap D6 and D9 to make the phases equal.

21、In result the stabilized oscillation can be done at the desired frequency. 5 UHF IC2 compares the frequency gained by dividing the signal added to pin 19 of IC2 by the control signal from IC6 with the frequency gained by dividing the reference frequency of 12.9 MHz inside IC2. When the phase differe

22、nce is found as a result of phase comparison, the pulse signal is output from the charge pump output of pin 13 of IC2, then the signal is converted into the DC voltage at the inside circuit for passive filter and added to the cathode side of VCO vari-cap D16 and D18 to make the phases equal. In resu

23、lt the stabilized oscillation can be done at the desired frequency. 2) TX 1. Microphone Amplifier The microphone amplifier IC14 has 2 operational amplifiers. The voice is converted into the electric signal through the microphone, then supplied to IC14. The input signal is amplified and pre-emphasize

24、d to be output. VHF The signal output from microphone amplifier is adjusted the maximum frequency deviation in WFM mode at VR1, then adjusted the maximum frequency deviation in NFM mode at VR2. The adjusted signal is added to the cathode of VCO vari-cap D11 for deviation to change the capacity of th

25、e oscillation circuit resulting the FM deviation. UHF The signal output from microphone amplifier is adjusted the maximum frequency deviation in WFM mode at VR3, then adjusted the maximum frequency deviation in NFM mode at VR4. Then the adjusted signal is added to the cathode of VCO vari-cap D17 for

26、 deviation to change the capacity of the oscillation circuit resulting the FM deviation. 2. Power Amplifier The oscillated signal at VCO is supplied to the power amplifier Q5, passing through buffer amplifier Q7, driver amplifier IC1 and Q6. The power-amplified signal is supplied to the antenna thro

27、ugh the duplexer after the harmonics are attenuated enough. 6 3) M38267M8L (XA0844) CPU Terminal Connection (TOP VIEW) 7 1 P67/AN7 SMT I S-meter input 2 P66/AN6 SQL I Noise level input for squelch 3 P65/AN5 BAT I Low battery detection input 4 P64/AN4 TIN I CTCSS/DCS tone input 5 P63/SCLK22/AN3 BP1 I

28、 Band plan 1 6 P62/SCLK21/AN2 UND O DCS signal mute 7 P61/SOUT2/AN1 DCSW O DCS signal mute 8 P60/SIN2/AN0 FKEY I Function key input 9 P57/ADT/DA2 DCS O CTCSS/DCS tone output, Tuning voltage output 10 P56/DA1 DTOUT O DTMF output/EVR control output 11 P55/CNTR1 C5C O C5V power ON/OFF output 12 P54/CNT

29、R0 TBST O Tone burst output 13 P53/RTP1 STB2 O Strobe for DAC 14 P52/RTP0 RVC O VHF-RX power ON/OFF output 15 P51/PWM3 CLK O Serial clock output 16 P50/PWM0 DATA/UL I/O Serial data output/Unlock input 17 P47/SROY1 RUC O UHF-RX power ON/OFF output 18 P46/SCLK1 STB1 O Strobe for PLL 19 P45/TXD CTX O U

30、ART data transmission output 20 P44/RXD CRX I UART data reception input 21 P43/TOUT BEEP/ BP2 I/O Beep tone output/Band plan 2 22 P42/INT2 RE2 I Rotary encoder input 23 P41/INT1 STL I Steal input 24 P40 SD O Signal detection output 25 P77 PT5 I PTT input 26 P76 DSQ I Digital squelch input 27 P75 SST

31、B O Strobe signal to scramble IC 28 P74 AFS O AF switch output 29 P73 C/S O Digital scramble ON/OFF 30 P72 DUD I Digital unit detect 31 P71 SCR I Scramble IC ready signal 32 P70/INTO BU I Back up signal detection input 33 RESET RESET I Reset input 34 XCIN NC _ 35 XCOUT NC 36 XIN XIN I Clock input 37

32、 XOUT XOUT O Clock output 38 VSS VSS CPU GND 39 P27 PSW I Power switch input 40 P26 SDA O Serial data output for EEPROM 41 P25 SCL O Serial clock output for EEPROM 42 P24 RE1 I Rotary encoder input 43 P23 KI0 I Key matrix input 44 P22 KI1 I Key matrix input 45 P21 KI2 I Key matrix input 46 P20 KI3 I

33、 Key matrix input 47 P17 KO3 O Key matrix output 48 P16 KO2 O Key matrix output _ _ _ _ No. Terminal Signal I/ODescription 8 No. Terminal Signal I/O Description 49 P15/SEG39 KO1 O Key matrix output 50 P14/ SEG38 KO0 O Key matrix output 51 P13/ SEG37 PUC O UHF-PLL power ON/OFF output 52 P12/ SEG36 PV

34、C O VHF-PLL power ON/OFF output 53 P11/ SEG35 TUC O UHF-TX power ON/OFF output 54 P10/ SEG34 AFP O AF AMP power ON/OFF output 55 P07/SEG33 TVC O VHF-TX power ON/OFF output 56 P06/SEG32 R5C O RX power ON/OFF output 57 P05/SEG31 SEG31 O 58 P04/SEG30 SEG30 O 59 P03/SEG29 SEG29 O 60 P02/SEG28 SEG28 O 61

35、 P01/SEG27 SEG27 O 62 P00/SEG26 SEG26 O 63 P37/SEG25 SEG25 O 64 P36/SEG24 SEG24 O 65 P35/SEG23 SEG23 O 66 P34/SEG22 SEG22 O 67 P33/SEG21 SEG21 O 68 P32/SEG20 SEG20 O 69 P31/SEG19 SEG19 O 70 P30/SEG18 SEG18 O 71 SEG17 SEG17 O 72 SEG16 SEG16 O 73 SEG15 SEG15 O 74 SEG14 SEG14 O 75 SEG13 SEG13 O 76 SEG1

36、2 SEG12 O 77 SEG11 SEG11 O 78 SEG10 SEG10 O 79 SEG9 SEG9 O 80 SEG8 SEG8 O 81 SEG7 SEG7 O 82 SEG6 SEG6 O 83 SEG5 SEG5 O 84 SEG4 SEG4 O 85 SEG3 SEG3 O 86 SEG2 SEG2 O 87 SEG1 SEG1 O 88 SEG0 SEG0 O LCD segment signal 89 VCC VDD CPU power terminal 90 VREF VREF AD converter power supply 91 AVSS AVSS AD co

37、nverter GND 92 COM3 COM3 O LCD COM3 output 93 COM2 COM2 O LCD COM2 output 94 COM1 COM1 O LCD COM1 output 95 COM0 COM0 O LCD COM0 output 96 VL3 VL3 I LCD power supply 97 VL2 VL2 I LCD power supply 98 C2 NC 99 C1 NC 100 VL1 VL1 I LCD power supply _ _ _ _ _ _ 9 SEMICONDUCTOR DATA 1) PC2710T (XA0449) 10

38、00p 1000p1000p 50W50 2, 3, 5 14 6 L: 20.5T. 2mml.D. 0.25UEW INOUT Vcc GND GND Input Output GND Vcc Top View Test Circuit RF Amplifier ParameterSymbolConditionRatingsUnit Supply voltageVcc5.0V Circuit currentIccVcc=5V, no signa22mA Power gainGPVcc=5V, f=500MHz33dB Staturated output powerPo(sat)Vcc=5V

39、, f=500MHz, Pin=-8dBm+13.5dBm Noise figureNFVcc=5V, f=500MHz3.5dB Upper frequency (-3dB)fuVcc=5V, Reference freq. =100MHz1000MHz IsolationISLVcc=5V, f=500MHz39dB Input return lossRL inVcc=5V, f=500MHz6dB Output return lossRL outVcc=5V, f=500MHz 12dB Gain flatnessGpVcc=5V, f=0.10.6GHz 0.8 dB 2) S-813

40、50HG-KD-T1 (XA0724) Top View K D 3 E 1 VOUT 2 GND 3 VIN 1 2 3 1 2 3 VDD VSS VREF OUT * * + - 10 3) 24LC32AT-I/SN (XA0604) 32K 2.5V I2C Serial EEPROM A0 A1 A2 VssSDA SCL WP VccNameFunction VssGround A0.A2User Configurable Chip Selects SDASerial Address/Data I/O SCLSerial Clock WPWrite Protect Input V

41、cc+2.5V6.0V Power Supply PDIP 4) M5222FP-600C (XA0385) Electronic Volume 11 5) TC4W53FU (XA0348) 6) TK10931V (XA0666) 123456789101112 242322212019181716151413 AM DET RSSI RECT COMP AMP AGC Vref Vcc AM AMP FM AMP FM DET MIXER OSC RF INPUT GND COMP OUTPUT COMP INPUT NOISE AMP OUTPUT NOISE AMP INPUT AM

42、 AGC INPUT AGC AMP OUTPUT RF AGC OUTPUT RSSI OUTPUT AM SW AM DET OUT OSC(B) OSC(E) MIX OUTPUT Vcc AM IF INPUT DECOUPLING FM IF INPUT DECOUPLING DECOUPLING LIM OUTPUT QUAD INPUT FM DET OUTPUT Pin Assignment / BLOCK Diagram (Top View) 12 7) NJM2902V-TE1 (XA0596) Quad Single Supply Operational Amplifie

43、r 8) NJM2070M (XA0210) 13 9) PD3140GS-E1 (XA0312) 80 550MHz Dual PLL Synthesizer Specifications Operating frequency:200 400MHz (Vin=-12 0dBm, pin 2 and 19 input) 80 550MHz (Vin=-8 0dBm, pin 2 and 19 input) Consumption current:2.7 4.1mA (Vcc=1.8V while 1 channel is used) 4.3 6.6mA (Vcc=1.8V while bot

44、h channels are used) 0 10uA (Vcc=1.8V in power save mode) 3.5 5.3mA (Vcc=5V while 1 channel is used) 5.6 8.6mA (Vcc=5V while both channels are used) Operationg voltage:1.8 5.5V 14 10) BA4510FV-E2 (XA0537) Dual Operational Amplifier Vcc= 2.5V Typ High through rate: 5V/Sec Block Diagram (Top View) 11) S-80845ALMP-EA9-T2 (XA0620) Voltage Regulator 15 12) MB88347LPFV-G-BND-EF (XA0599) D/A converter for digital tuning 16 13) Transistor, Diode, and LED Ontline Drawings Top View M 2 Y R 6 R TX XP1111-TX XU0171 UN911H TX XU0092 S3DG7 XD0261 MA741WA TX XD0251 2SK882-GR-TE85L XE