DJ-180_SM.pdf

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1、DJ-180 DJ-1400Service Manual CONTENTS SPECIFICATIONSPC BOARD VIEW 1) General2 1) VCO Unit24 2) Transmitter.2 2) JACK Unit24 3) Receiver2 3) PTT Unit Side B24 4) Functions for Each Version3 4) PS Unit25 CIRCUIT DESCRIPTION 5) ROM1 Unit Side B25 1) Receiver System4 6) ROM2 Unit Side B25 2) PLL VCO Cir

2、cuit.5 7) RF Unit Side A26 3) Transmitter System5 8) RF Unit Side B27 4) DTMF Encoder Circuit (option).6 9) CPU Unit Side A.28 5) Tone Squelch Circuit (option)6 10) CPU Unit Side B29 6) Microprocessor and Peripheral Circuit6 11) RE Unit30 7) Terminal Function of Microprocessor7 12) CTCSS UniL30 SEMI

3、CONDUCTOR DATA 13) DTMF Unit.31 1) LR40872110PARTS LAST 2) M5218FP10 CPU unit32 3) M5236ML.10 PS unit.32 4) MB1504LPF11 ROM1 Unit33 5) MC335711 DTMF Unit33 6) MX36512 RF Unit33 36 7) NJM38613 Vco unit37 8) RH5VA32AA.13 CTCSS Unit37 9) RH5VA45AA.13 PTT SW Unit38 10) X24C01A14 JACK Unit38 11) X24C04S1

4、414 RE Unit38 12) X24C16S1414 Others38 13) Transistor, Diode and LED Outline Draw15 ROM2 Unit.38 14) LCD Connection.16 PACKING38 EXPLODED VIEW Parts Table for Each Version.39 1) Rear Case 117ADJUSTMENT 2) LCD17 1) Required Test Equipment.40 3) Rear Case 218 2) Before Adjustment40 4) Front Case 119 3

5、) Adjustment for DJ180, DJ140041 5) Front Case 220 4) Adjustment for DJ1400AN/QN42 6) Front Case 3 and Battery Terminal21 5) Adjustment Quick Reference43 7) Ten Key Cover and Key Pad Panel22 6) Adjustment Points.43 44 8) CTCSS Unit and ROM1 Unit23 CIRCUIT DIAGRAM 45 46 BLOCK DIAGRAM47 ALINCO INCORPO

6、RATED TWIN 21 M.I.D. TOWER BUILDING 23F, 1-61, 2-CHOME, SHIROMI CHUO-KU , OSAKA, 540-8580 JAPAN Tel (81)6-6946-8150 fax (81)6-6946-8175 e-mail: exportalinco.co.jp SPECIFICATIONS DJ-180 1) General Frequency Coverage: RX: 137.000 173.995MHz (T, TM version) TX: 144.000 147.995MHz (T, TM version) RX: 13

7、7.000 173.995MHz (TA, TB, TA2, TB2 version) TX: 137.000 173.995MHz (TA, TB, TA2, TB2 version) RX/TX: 144.000145.995MHz(TS, TSA, TZ, E, EA, EB version) Frequency Resolution:5, 10, 12.5, 15, 20, 25kHz steps Memory Channels:10 Channels (standard) Antenna Impedance:50 ohm unbalanced Signal Type:F3E(FM)

8、Power Supply Requirement:DC 5.5V13.8V (Rated 7.2V Ni-Cd) Dimensions:Approximately 132(H) x 58(W) x 33(D) mm Weight :Approximately 350g 2) Transmitter Output Power.I5.0W with Optional 12V Ni-Cd Battery 2.0W with Standard 7.2V Ni-Cd Battery (144.000147.995MHz) (160.000165.000MHz). TA2, TB2 only Modula

9、tion System:Variable Reactance Frequency Modulation Max. Frequency Deviation: +/ -5kHz Tone Frequency:67.0 to 250.3Hz -38 Subaudible Encoding Tones (E, EA, EB version: option) DTMF Encoder:(TZ, EB version: option) Tone Burst:(E, EA, EB version only) 3) Receiver Receiver System:Double-Conversion Supe

10、rheterodyne Intermediate Frequency.1st IF: 21.4MHz 2nd IF: 455kHz Sensitivity:12dB SINAD less than -10dBu (144.00017.995MHz) (160.000165.000MHz). TA2, TB2 only Page 2 SPECIFICATIONS DJ-1400QN / AN (The Narrow Version) 1) General Frequency Coverage: 136.000 155.000MHz (AN version) 150.000 173.995MHz

11、(QN version) Frequency Resolution:5, 10, 12.5, 15, 20, 25kHz steps Memory Channels:10 Channels (standard)/option 50 and 200ch Antenna Impedance:50 ohm unbalanced Signal Type:F3E(FM) Power Supply Requirement:DC 5.5V13.8V (Rated 7.2V Ni-Cd) Dimensions:Approximately 132(H) x 58(W) x 33(D) mm Weight :Ap

12、proximately 350g 2) Transmitter Output Power.I5.0W with Optional 12V Ni-Cd Battery 2.0W with Standard 7.2V Ni-Cd Battery Modulation System:Variable Reactance Frequency Modulation Max. Frequency Deviation: +/ -2.5kHz Tone Frequency:67.0 to 250.3Hz -38 Subaudible Encoding Tones Time Out Timer0 to 450

13、sec Time Out Penalty0 to 15 sec 3) Receiver Receiver System:Double-Conversion Superheterodyne Intermediate Frequency.1st IF: 21.4MHz 2nd IF: 455kHz Sensitivity:12dB SINAD less than -16dBu AF Output200mW (10% THD) Page 2-1 4)Functions for Each Version RX Frequency Range TX Frequency Range(facto Tone

14、Burst CTCSSDTMFBAND Final Operatio n DJ-180T130174144148xOOR+LA DJ-180TA130174130174xOOR+LA DJ-180TA2130174130174xOOHR+LA DJ-180TB130174130174xOOR+LA DJ-180TB2130174130174xOOHR+LA DJ-180TM130174144148xOOR+LA DJ-180TS144146144146xOOR DJ-180TSA144146144146xOOR DJ-180TZ144146144146xOx(with16keys)R DJ-1

15、80E144146144148OA(option)OR DJ-180EA144146144146OA(option)OR DJ-180EB144146144146OA(option)xR DJ-1400130174130174xOxR+LA DJ-1400A130174130174xOxR+LA DJ-1400B130174130174xXxR+LA DJ-1400F130174130174xOxR+LA DJ-1400G130174130174xXxR+LA DJ-1400TM130174130174xOxR+LA DJ-1400AN136155130174xOxR+LA DJ-1400QN

16、150174130174xOxR+LA Final Operation R:Press and hold the F key and turn on the radio. R+LA:Press and hold the F and LAMP keys and turn on the radio. Note: The expanded frequency will return to the initial setting if you reset the radio with.R operation after R + LA operation. To resume the expanded

17、frequency . reset the radio again with.R + LA operation. Page 3 Function Version CIRCUIT DESCRIPTION 1) Receiver System The receiver system is the double superheterodyne. The first IF is 21.4MHz andthe second IF is 455kHz. 1. Front EndThe signal from the antenna is passed through a low-pass fitter a

18、nd input to the RF coil L4. The signal trom L4 is amplified by Q1 and led to the band passtilter (L5, L6, L7), and led to the first mixer gate of Q2. 2. First MixerThe amplified signal (fo) by Q1 is mixed with the first local oscillator signal (fo -21.4MHz) from the PLL circuit by the first-stage mi

19、xer Q2 and so is converted into the first IF signal. The unwanted frequency band of the first IF signal is eliminated by the monolithic crystal filter (XF1), and led to IF amplifier Q3. 3. IF AmplifierThe first IF signal is amplified by Q3, and inputto pin16 of IC1, where it is mixed with the second

20、 local oscillator signal (21.855MHz) and so is con- verted into the second IF signal (455kHz). The second lF signal is output from pin3 of IC1, and unwanted frequency band of the second lF signal is eliminated by a ceramic filter (FL1). The resulting signal is then amplified by the second lF limitin

21、g amplifier, and detected by quadrature circuit. The audio signal is output from ping of IC1. 4. Audio CircuitThe detected signal from IC1 is passed through the low-pass filter and led to the flat amplifier Q13. When the optional Tone Squelch unit is equipped, the tone signal is eliminated by lC701.

22、 Q13 is switched ON/OFF by AFC slgnal from CPU. The audio signal is input to the main volume (VR3) and amplified by the power amplifier IC3 to drive the speaker. The power supply voltage of IC3 is limited by AF regulator consisting of Q14 and Q15 to prevent the speaker from overdriving. The power su

23、pply voltage of IC3 is switched ON/OFF by AFP signal. 5. Squelch CircuitThe noise in the audio signal from IC1 is passed through the squelch control variable resistor (VR4) and input to pin10 of IC1. The audio signal is ampli- fied by filter amplifier of IC1 and output to pin11. The desired noise of

24、 the audio signal is eliminated by the high-pass filter and amplified by Q12. The resulting signal is rectified by D13 and then input to pin12 of IC1. When the squelch circuit is close, pin13 of ICl goes to low. When the squelch circuit is open or a signal is received, pin13 goes to high, then the s

25、ignal of pin13 is led to CPU. Page 4 2) PLL, VCO Circuit Output frequency of PLL circuit is set by the serial data (pin9: clock, pin10: data, pin11 : toad enable) from microprocessor. PLL circuit consists of VCO Q201, buffer amplifier Q202 and Q17. When PLL is locked, pin7 of IC2 goesto high and UNL

26、OCK SW Q19 becomes OFF, then T.MUTE signal goes to low. The pulse wave output of charge pump is converted to DC voltage by PLL loop filter circuit, and supplied to D201 , D202 of varicap diode in VCO unit. The VCO tune voltage is applied to the varicaps D3, D4, D5 and D6 in the frontend. The frequen

27、cy modulation is executed when the audio signal voltage is supplied to the varicaps D201, D202 and D203. 3) Transmitter System 1. MicrophoneThe voice from the internal or external microphone is led to the pre-empha- Amplifiersis circuit, and then input to the microphone amplifier IC4, which consists

28、 of two operational amplifiers. The amplified signal is input to the low.pass filter lC4. The output from the microphone amplifier is passed through variable resis- tors VR2 tor modulation adjustment to varicap diode of the VCO, contromng the VCO frequency. 2. Power Amplifier The signal from VCO is

29、amplified by buffer amplifiers Q4 and Q5, and input to the buffer amplifiers Q6 and input to the power amplifier Q7. The amplified signal is output from Q7, and then passed through the low-pass filter, the an- tenna switch circuit and the output low-pass tilter. The unwanted harmonies frequency sign

30、al is eliminated by the low-pass fitter and input to the antenna. The LC matching circuits located between amplifiers of the transmitting circuit make the transmission smooth. 3. Automatic Power Control CircuitThe automatic power control(APC) circuit is used to obtain a stable transmis- sion power.

31、This circuit detects the transmission power by D8 in the low- pass filter consisting of L18, L19, C59, and C64. The detected DC voltage is supplied to APC circuit. When the detected voltage goes higher than the settled voltage, the bias voltage of APC amplifier Q9 goes to low. The collector voltage

32、of APC amplifier Q10 goes to low and the power supply voltage of Q5 goes to low, and output power becomes small to prevent from the over power. At low power the Power Control Switch Q8 lets the base voltage of APC DET Q11 and the collector voltage of APC AMP Q10 down, also switches between high powe

33、r and low power, and inhibits the transmission. Page 5 4) DTMF Encoder Circuit (option) The DTMF signal corresponding to the combination of the column and row is output from tone output pin17 of IC401 Encoder, producing a frequency- modulated RF output. The Q401 switches the DTMF Encoder when lC401

34、is active during DTMF transmission. 5) Tone Squelch Circuit (option) 1.Decoder The second IF signalfrom pin11 of IC1, and input to the tone squelch decoder lC701. When the tone squelch decoder IC701 decodes the input tone signal fre- quency as the programmed frequency, pin13 goes to Low. The signal

35、is input to pin16(DET) of lC107, and the squelch goes off. When the Tone squelch decoder IC701 does not decode the input tone signal frequency as the programmed frequency, pin13 goes to High. 2. Encoder The tone signal is output from pin16 of IC701, producing a frequency- modulated RF output. 6) Mic

36、roprocessor (CPU) and Peripheral Circuit Refer to Terminal Function of Microprocessor about each terminal func- tion. 1, BS ModeWhen the Squelch is closed for more than 5 seconds, the radio goes into the BS(Battery Save) mode automatically. Pin11 (R5C) and pin19 become High or Low periodically. Open

37、 the Squelch, and the radio does not go into the BS mode. 2. Backup Reset When the voltage detector circuit lC303 detects a decrease in the C5V line, CPU RAM data is stored in the EEPROM IC, IC601. IC 302 is also the voltage detector circuit and it detects the lower voltage than IC303. The circuit d

38、etects a increase in the C5V line when power is turned on, and then the CPU will be initialized. 3. Reset Press and holdthe.F key, then turn on the power. The radio will reset to initial factory settings. Even if you expanded the frequency, it will return to the initial setting. To resume the expand

39、ed frequency, press and hold the F and Lamp keys, then turn on the power. Page 6 7) Terminal Function of Microprocesser NameI/O DescriptionPinNo. PinNameHL TBSTO 1750Hz Tone Burst Output9P57/PWM3Normal:H(HiZ)Output:Pluse BEEPO Beep Tone Output10P56/PWM2Normal:H(HiZ)Output:Pluse R5CO RX5V ON/OFF11P55

40、/PWM1ONOFF T5CO TX5V ON/OFF12P54/PWM0ONOFF AFPO AF Power Amplifier ON/OFF13P53/SIGONOFF AFCO IF Mute Output14P52/CNT2Mute OFFMute ON M.MUTEO Microphone Mute Output15P5l/CNT1 during Tone Burst TansmissionNormal RE1IRotary Encoder Input 116P50/INT3 LAMPO Lamp ON/OFF Switch17P37/SRDYONOFF BATIBattery L

41、ow lndicator Input18P36/CLKLowNormal P5CO PLL Power ON/OFF19P35/SOUTONOFF EICDIEEPROM Unit Detection20P34/SINEquippedNothing XWRIExternal EEPROM Write Cycle Detection21P33rrNormalWrite cycle RE2IRotary Encoder Input 222P32/INT2 SCOMO Band Plan Scan Output23P3l/XCINH(Hiz)Low Active P.H/LO Transmit Po

42、wer Switch24P30/XCOUT Low PowerHigh Power BUIBack up Mode Input25INT1NormalNegative Edge Triggered 26CNVss RESIReset Input27RESETat Workon Reset Clock Input 3.58MHz28XIN Clock Output 3.58MHz29XOUT Ground30Vss TSQDITone Detecton Input31P17UndetectedDetected TICDITone Unit Detection32P16NothingEquippe

43、d BP1IBand Plan(TX)33P15ExpandedNormal BP2IBand Plan(RX)34P14ExpandedNormal BP3IBand PIan(TX,RX)35P13ExpandedNormal BP4IBand Plan(Channelstep)36P12ExpandedNormal BP5IBand Plan(OffsetFreq.)37P11ExpandedNormal CHIBand Plan(ChanneIDisp.)38P10ExpandedNormal SLCO CIock for EEPROM IC39P07Normal:HizOutput:

44、 Pluse SDAI/O Data for EEPROM IC40P06Normal:HizOutput: Pluse CLKO Clock for PLL,TONE IC41P05Output:PluseNormal:L DTAO Data for PLL,TONE IC42P04Output:PluseNormal:L STB1O Strobe for PLL IC43P03Output:PluseNormal:L STB2O Strobe for TONE IC44P02Output:PluseNormal:L FUNCIFunction Key Input45P0lOFFON SDI

45、Signal Detection Input46P00ReceivedNothing TBSTITone Burst Key Input47P27OFFON CALLICALL(APO)48P26OFFON LAMPILAMP (FLJPL)49P25OFFON MONIIMONl(P.H/L)50P24OFFON TONEITONE(MW)51P23OFFON V/MIV/M(OFFSET)52P22OFFON T.SCANIT.SCAN(CH STEP)53P2lOFFON PTTIPTT Key Input54P20OFFON 55VL3 56VL2 57VL1 COM0O Common

46、 Output58COM0 COM1O Common Output59COM1 COM2O Common Output60COM2 61COM3 SEG0O Segment Output62SEGO SEG1O Segment Output63SEGl SEG2O Segment Output64SEG2 SEG3O Segment Output65SEG3 SEG4O Segment Output66SEG4 SEG5O Segment Output67SEG5 SEG6O Segment Output68SEG6 SEG7O Segment Output69SEG7 SEG8O Segme

47、nt Output70SEG8 SEG9O Segment Output71SEG9 SEG10O Segment Output72SEG10 SEG11O Segment Output73SEG11 SEG12O Segment Output74SEG12/P43 SEG13O Segment Output75SEG13/P42 SEG14O Segment Output76SEGl4/P4l SEG15O Segment Output77SEG15/P40 SEG16O Segment Output78SEG16/IN7 SEG17O Segment Output79SEG17/IN6 S

48、EG18O Segment Output80SEG18/IN5 SEG19O Segment Output1SEG19/lN4 SEG20O Segment Output2SEG20/IN3 SEG2lO Segment Output3SEG21/IN2 SEG22O Segment Output4SEG22/IN1 SEG23O Segment Output5SEG23/IN0 Ground6AVss +4V7Vref +4V8Vcc Page 7 AV0004 ST0031 EL0020A FG0099Z FG0099Z FF0022 UE0029A AV0004 AV0004 AV000

49、4 AV0004 AV0004 AV0004 FG0092(180T/E) FG0112(1400.) FG0129(1400AN/QN) UX1035 ES0011AZ NB0047A (DJ1400.) (DJ180.) (PAGE 22) DP0111 (1400AN/QN) DS0340 DS0357 (DJ180T) DS0388 AZ PS unit Page 21 (180EB, 1400 .) DTMF UNIT FG0101AZ PAGE 22 PTT UNIT AN QN 1 1 1 1 UP0220 (1/2) UP0220 (1/2) UP0220 (1/2) (UP0221) 1/2 UP0221 (1/2) R376 UP0220 (1/2) EY0015 AN QN - 1 1 - - W303 W303 - W303 AN QN - - - - 1 1 - - UP0220 (1/