DJ-180 Service Manual DJ-1400 CONTENTS SPECIFICATIONS PC BOARD VIEW 1) General 1) VCO Unit 2) Transmitter. 2) JACK Unit 3) Receiver 3) PTT Unit Side B 4) Functions for Each Version 4) PS Unit CIRCUIT DESCRIPTION 5) ROM1 Unit Side B...
Functions for Each Version Final Function Frequency Frequency Tone Operatio Version Range Range(facto Burst CTCSS DTMF BAND DJ-180T 130~174 144~148 R+LA DJ-180TA 130~174 130~174 R+LA DJ-180TA2 130~174 130~174 R+LA DJ-180TB 130~174 130~174 R+LA DJ-180TB2 130~174 130~174 R+LA DJ-180TM 130~174 144~148 R+LA DJ-180TS 144~146...
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 End The signal from the antenna is passed through a low-pass fitter and 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) 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 UNLOCK SW Q19 becomes OFF, then T.MUTE signal goes to "low".
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 is active during DTMF transmission.
7) Terminal Function of Microprocesser Name I/O Description PinNo. PinName TBST O 1750Hz Tone Burst Output P57/PWM3 Normal:H(HiZ) Output:Pluse BEEP O Beep Tone Output P56/PWM2 Normal:H(HiZ) Output:Pluse O RX5V ON/OFF P55/PWM1 ON O TX5V ON/OFF P54/PWM0 ON O AF Power Amplifier ON/OFF P53/SIG O IF Mute Output P52/CNT2...
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ROM1 Unit / DTMF Unit / RF Unit Ref No Parts No. Description Parts Name Ref No Parts No. Description Parts Name ROM1 Unit UP0220 1/2 RF Unit UP0221 CN601 UE0132 Connector DF9A-9P-1V CU3004 Chip C. C1608CH1H030CT-A IC601 XA0363 AT24C01A-10SI-2.7 CU3018 Chip C.
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RF Unit RF Unit Ref No Parts No. Description Parts Name Ref No Parts No. Description Parts Name CU3005 Chip C. C1608CH1H040CT-A C129 CU3023 Chip C. C1608CH1H101JT-A CU3017 Chip C. C1608CH1H330JT-A C130 CU3035 Chip C. C1608JB1H102KT-A CE0204 Chip Tantal ECEA1CKA107 C131 CS0329 Chip Tantal...
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RF Unit RF Unit Ref No Parts No. Description Parts Name Ref No Parts No. Description Parts Name XD0118 Diode MA716-TW XT0088 Transistor 2SA1213YTE12L XD0137 Diode DTZ6.2ATT11 XU0038 Transistor UN2214-TX XD0272 Diode 1SS356 TW11 XU0036 Transistor XN111F-TX QB0008 Ferrite Bead HF30ACB201 209-T XU0035 Transistor...
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RF Unit Ref No Parts No. Description Parts Name Ref No Parts No. Description Parts Name RK3054 Chip R. ERJ3GSYJ223V R130 RK0105 Chip R. ERJ6GEYJ2R2V RK3054 Chip R. ERJ3GSYJ223V R131 RK3030 Chip R. ERJ3GSYJ221V RK3042 Chip R. ERJ3GSYJ222V R132 RK3034 Chip R.
VCO Unit / CTCSS Unit Ref No Parts No. Description Parts Name Ref No Parts No. Description Parts Name 180T… 1400non VCO Unit CTCSS Unit UP0221 1400A C201 CU3035 Chip C. C1608JB1H102KT-A C701 CU3027 Chip C. C1608CH1H221JT-A C202 CU3047 Chip C. C1608JB1H103KT-A C702 CU3027...
PTT SW Unit/JACK Unit /RE Unit OTHER/ROM2 Unit /PACKING Ref No Parts No. Description Parts Name Ref No Parts No. Description Parts Name PTT SW Unit ROM2 Unit SW301 UU0013 Switch SKHUAB CN801 UE0132 Connector DF9A-9P-1V SW302 UU0013 Switch SKHUAB IC801 XA0200 X24C04S14-3.0T (EJ-14u) SW303 UU0013...
3) ADJUSTMENT for DJ1400AN/QN (The Narrow Version) PLL Adjustment Item Condition Measurement Adjustment Speclficatlons/ Test-equipment Ternlinal Unit Parts Method Remarks RX VCO Frequency: 145.00MHz Digital Multimeter TPl L205 1.5+/-0.05V Reference Frequency: 145.00MHz 145.00MHz+/- Frequency PTT: ON Frequency Counter ANT 50Hz TX Adjustment Item Condition...
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Wide Version Narrow Version 2.2KHz+/-0.2KHz 0.8KHz+/-0.05KHz 0.35KHz+/-0.05KHz www.ALINCO-RADIO.ru...