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DJ-180 |
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Service Manual |
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DJ-1400 |
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CONTENTS |
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SPECIFICATIONS |
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PC BOARD VIEW |
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1) |
General |
2 |
1) |
VCO Unit |
24 |
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2) |
Transmitter. |
2 |
2) |
JACK Unit |
24 |
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3) |
Receiver |
2 |
3) |
PTT Unit Side B |
24 |
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4) |
Functions for Each Version |
3 |
4) |
PS Unit |
25 |
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CIRCUIT DESCRIPTION |
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5) ROM1 Unit Side B |
25 |
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1) |
Receiver System |
4 |
6) |
ROM2 Unit Side B |
25 |
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2) |
PLL VCO Circuit. |
5 |
7) |
RF Unit Side A |
26 |
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3) |
Transmitter System |
5 |
8) |
RF Unit Side B |
27 |
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4) |
DTMF Encoder Circuit (option). |
6 |
9) |
CPU Unit Side A. |
28 |
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5) |
Tone Squelch Circuit (option) |
6 |
10) CPU Unit Side B |
29 |
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6) |
Microprocessor and Peripheral Circuit |
6 |
11) RE Unit |
30 |
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7) |
Terminal Function of Microprocessor |
7 |
12) CTCSS UniL |
30 |
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SEMICONDUCTOR DATA |
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13) DTMF Unit. |
31 |
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1) LR408721 |
10 |
PARTS LAST |
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2) M5218FP |
10 |
CPU unit |
32 |
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3) |
M5236ML. |
10 |
PS unit. |
32 |
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4) MB1504LPF |
11 |
ROM1 Unit |
33 |
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5) MC3357 |
11 |
DTMF Unit |
33 |
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6) |
MX365 |
12 |
RF Unit |
33 ~ 36 |
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7) |
NJM386 |
13 |
Vco unit |
37 |
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8) RH5VA32AA. |
13 |
CTCSS Unit |
37 |
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9) RH5VA45AA. |
13 |
PTT SW Unit |
38 |
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10) X24C01A |
14 |
JACK Unit |
38 |
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11) X24C04S14 |
14 |
RE Unit |
38 |
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12) X24C16S14 |
14 |
Others |
38 |
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13) Transistor, Diode and LED Outline Draw |
15 |
ROM2 Unit. |
38 |
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14) LCD Connection. |
16 |
PACKING |
38 |
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EXPLODED VIEW |
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Parts Table for Each Version. |
39 |
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1) Rear Case 1 |
17 |
ADJUSTMENT |
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2) |
LCD |
17 |
1) |
Required Test Equipment. |
40 |
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3) |
Rear Case 2 |
18 |
2) |
Before Adjustment |
40 |
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4) |
Front Case 1 |
19 |
3) |
Adjustment for DJ180, DJ1400 |
41 |
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5) |
Front Case 2 |
20 |
4) |
Adjustment for DJ1400AN/QN |
42 |
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6) |
Front Case 3 and Battery Terminal |
21 |
5) Adjustment Quick Reference |
43 |
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7) |
Ten Key Cover and Key Pad Panel |
22 |
6) Adjustment Points. |
43 ~ 44 |
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8) CTCSS Unit and ROM1 Unit |
23 |
CIRCUIT DIAGRAM |
45 ~ 46 |
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BLOCK DIAGRAM |
47 |
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ALINCO INCORPORATED
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: export@alinco.co.jp
SPECIFICATIONS
DJ-180
1) General
Frequency Coverage:
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RX: 137.000 ~ 173.995MHz (T, TM version) |
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TX: 144.000 ~ 147.995MHz (T, TM version) |
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RX: 137.000 ~ 173.995MHz (TA, TB, TA2, TB2 version) |
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TX: 137.000 ~ 173.995MHz (TA, TB, TA2, TB2 version) |
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RX/TX: 144.000~145.995MHz(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) |
Power Supply Requirement DC 5.5V~13.8V (Rated 7.2V Ni-Cd) |
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Dimensions: |
Approximately 132(H) x 58(W) x 33(D) mm |
Weight : |
Approximately 350g |
2) Transmitter |
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Output Power.I |
5.0W with Optional 12V Ni-Cd Battery |
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2.0W with Standard 7.2V Ni-Cd Battery |
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(144.000~147.995MHz) |
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(160.000~165.000MHz)... TA2, TB2 only |
Modulation System: |
Variable Reactance Frequency Modulation |
Max. Frequency Deviation: +/ -5kHz |
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Tone Frequency: |
67.0 to 250.3Hz -38 Subaudible Encoding Tones |
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(E, EA, EB version: option) |
DTMF Encoder: |
(TZ, EB version: option) |
Tone Burst: |
(E, EA, EB version only) |
3) Receiver |
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Receiver System: |
Double-Conversion Superheterodyne |
Intermediate Frequency.' |
1st IF: 21.4MHz |
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2nd IF: 455kHz |
Sensitivity: |
12dB SINAD less than -10dBu |
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(144.000~17.995MHz) |
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(160.000~165.000MHz)... TA2, TB2 only |
Page 2
SPECIFICATIONS
1) General |
DJ-1400QN / AN (The Narrow Version) |
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Frequency Coverage: |
136.000 ~ 155.000MHz (AN version) |
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150.000 ~ 173.995MHz (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 5.5V~13.8V (Rated 7.2V Ni-Cd) |
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Dimensions: |
Approximately 132(H) x 58(W) x 33(D) mm |
Weight : |
Approximately 350g |
2) Transmitter |
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Output Power.I |
5.0W with Optional 12V Ni-Cd Battery |
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2.0W with Standard 7.2V Ni-Cd Battery |
Modulation System: |
Variable Reactance Frequency Modulation |
Max. Frequency Deviation: +/ -2.5kHz |
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Tone Frequency: |
67.0 to 250.3Hz -38 Subaudible Encoding Tones |
Time Out Timer |
0 to 450 sec |
Time Out Penalty |
0 to 15 sec |
3) Receiver |
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Receiver System: |
Double-Conversion Superheterodyne |
Intermediate Frequency.' |
1st IF: 21.4MHz |
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2nd IF: 455kHz |
Sensitivity: |
12dB SINAD less than -16dBu |
AF Output |
200mW (10% THD) |
Page 2-1
4)Functions for Each Version
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Function |
RX |
TX |
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Final |
Frequency |
Frequency |
Tone |
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Operatio |
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Version |
Range |
Range(facto |
Burst |
CTCSS |
DTMF |
BAND |
n |
DJ-180T |
130~174 |
144~148 |
x |
O |
O |
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R+LA |
DJ-180TA |
130~174 |
130~174 |
x |
O |
O |
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R+LA |
DJ-180TA2 |
130~174 |
130~174 |
x |
O |
O |
H |
R+LA |
DJ-180TB |
130~174 |
130~174 |
x |
O |
O |
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R+LA |
DJ-180TB2 |
130~174 |
130~174 |
x |
O |
O |
H |
R+LA |
DJ-180TM |
130~174 |
144~148 |
x |
O |
O |
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R+LA |
DJ-180TS |
144~146 |
144~146 |
x |
O |
O |
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R |
DJ-180TSA |
144~146 |
144~146 |
x |
O |
O |
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R |
DJ-180TZ |
144~146 |
144~146 |
x |
O |
x(with16keys) |
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R |
DJ-180E |
144~146 |
144~148 |
O |
A(option) |
O |
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R |
DJ-180EA |
144~146 |
144~146 |
O |
A(option) |
O |
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R |
DJ-180EB |
144~146 |
144~146 |
O |
A(option) |
x |
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R |
DJ-1400 |
130~174 |
130~174 |
x |
O |
x |
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R+LA |
DJ-1400A |
130~174 |
130~174 |
x |
O |
x |
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R+LA |
DJ-1400B |
130~174 |
130~174 |
x |
X |
x |
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R+LA |
DJ-1400F |
130~174 |
130~174 |
x |
O |
x |
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R+LA |
DJ-1400G |
130~174 |
130~174 |
x |
X |
x |
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R+LA |
DJ-1400TM |
130~174 |
130~174 |
x |
O |
x |
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R+LA |
DJ-1400AN |
136~155 |
130~174 |
x |
O |
x |
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R+LA |
DJ-1400QN |
150~174 |
130~174 |
x |
O |
x |
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R+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 frequency . reset the radio again with..R + LA"
operation.
Page 3
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 |
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the RF coil L4. |
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The signal trom L4 is amplified by Q1 and led to the band passtilter (L5, L6, |
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L7), and led to the first mixer gate of Q2. |
2. First Mixer |
The amplified signal (fo) by Q1 is mixed with the first local oscillator signal |
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(fo -21.4MHz) from the PLL circuit by the first-stage mixer Q2 and so is |
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converted into the first IF signal. |
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The unwanted frequency band of the first IF signal is eliminated by the |
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monolithic crystal filter (XF1), and led to IF amplifier Q3. |
3. IF Amplifier |
The first IF signal is amplified by Q3, and inputto pin16 of IC1, where it is |
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mixed with the second local oscillator signal (21.855MHz) and so is con- |
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verted into the second IF signal (455kHz). |
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The second lF signal is output from pin3 of IC1, and unwanted frequency |
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band of the second lF signal is eliminated by a ceramic filter (FL1). |
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The resulting signal is then amplified by the second lF limiting amplifier, and |
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detected by quadrature circuit. The audio signal is output from ping of IC1. |
4. Audio Circuit |
The detected signal from IC1 is passed through the low-pass filter and led to |
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the flat amplifier Q13. When the optional Tone Squelch unit is equipped, the |
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tone signal is eliminated by lC701. |
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Q13 is switched ON/OFF by AFC slgnal from CPU. |
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The audio signal is input to the main volume (VR3) and amplified by the |
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power amplifier IC3 to drive the speaker. |
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The power supply voltage of IC3 is limited by AF regulator consisting of Q14 |
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and Q15 to prevent the speaker from overdriving. The power supply voltage |
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of IC3 is switched ON/OFF by AFP signal. |
5. Squelch Circuit |
The noise in the audio signal from IC1 is passed through the squelch control |
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variable resistor (VR4) and input to pin10 of IC1. The audio signal is ampli- |
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fied by filter amplifier of IC1 and output to pin11. The desired noise of the |
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audio signal is eliminated by the high-pass filter and amplified by Q12. The |
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resulting signal is rectified by D13 and then input to pin12 of IC1. When the |
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squelch circuit is close, pin13 of ICl goes to "low". When the squelch circuit |
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is open or a signal is received, pin13 goes to "high", then the signal of pin13 |
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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 UNLOCK 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 frequency modulation is executed when the audio signal voltage is supplied to the varicaps D201, D202 and D203.
3) Transmitter System
1. Microphone |
The voice from the internal or external microphone is led to the pre-empha- |
Amplifier |
sis circuit, and then input to the microphone amplifier IC4, which consists of |
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two operational amplifiers. |
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The amplified signal is input to the low.pass filter lC4. |
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The output from the microphone amplifier is passed through variable resis- |
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tors VR2 tor modulation adjustment to varicap diode of the VCO, contromng |
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the VCO frequency. |
2. Power Amplifier |
The signal from VCO is amplified by buffer amplifiers Q4 and Q5, and input |
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to the buffer amplifiers Q6 and input to the power amplifier Q7. The amplified |
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signal is output from Q7, and then passed through the low-pass filter, the an- |
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tenna switch circuit and the output low-pass tilter. The unwanted harmonies |
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frequency signal is eliminated by the low-pass fitter and input to the antenna. |
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The LC matching circuits located between amplifiers of the transmitting |
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circuit make the transmission smooth. |
3. Automatic Power
Control Circuit The automatic power control(APC) circuit is used to obtain a stable transmission power. This circuit detects the transmission power by D8 in the lowpass 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 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 power 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 frequencymodulated RF output. The Q401 switches the DTMF Encoder when lC401 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 frequency as the programmed frequency, pin13 goes to "Low". The signal 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 frequencymodulated RF output.
6) Microprocessor (CPU) and Peripheral Circuit
Refer to "Terminal Function of Microprocessor" about each terminal function.
1, BS Mode |
When the Squelch is closed for more than 5 seconds, the radio goes into the |
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BS(Battery Save) mode automatically. Pin11 (R5C) and pin19 become High |
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or Low periodically. Open the Squelch, and the radio does not go into the |
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BS mode. |
2. Backup Reset |
When the voltage detector circuit lC303 detects a decrease in the C5V line, |
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CPU RAM data is stored in the EEPROM IC, IC601. IC 302 is also the |
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voltage detector circuit and it detects the lower voltage than IC303. The |
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circuit detects a increase in the C5V line when power is turned on, and then |
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the CPU will be initialized. |
3. Reset |
Press and holdthe."F" key, then turn on the power. The radio will reset to |
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initial factory settings. |
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Even if you expanded the frequency, it will return to the initial setting. To |
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resume the expanded frequency, press and hold the "F" and "Lamp" keys, |
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then turn on the power. |
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Page 6 |
7) Terminal Function of Microprocesser |
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Name |
I/O |
Description |
PinNo. |
PinName |
H |
L |
TBST |
O |
1750Hz Tone Burst Output |
9 |
P57/PWM3 |
Normal:H(HiZ) |
Output:Pluse |
BEEP |
O |
Beep Tone Output |
10 |
P56/PWM2 |
Normal:H(HiZ) |
Output:Pluse |
R5C |
O |
RX5V ON/OFF |
11 |
P55/PWM1 |
ON |
OFF |
T5C |
O |
TX5V ON/OFF |
12 |
P54/PWM0 |
ON |
OFF |
AFP |
O |
AF Power Amplifier ON/OFF |
13 |
P53/SIG |
ON |
OFF |
AFC |
O |
IF Mute Output |
14 |
P52/CNT2 |
Mute OFF |
Mute ON |
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during Tone Burst |
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M.MUTE |
O |
Microphone Mute Output |
15 |
P5l/CNT1 |
Tansmission |
Normal |
RE1 |
I |
Rotary Encoder Input 1 |
16 |
P50/INT3 |
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LAMP |
O |
Lamp ON/OFF Switch |
17 |
P37/SRDY |
ON |
OFF |
BAT |
I |
Battery Low lndicator Input |
18 |
P36/CLK |
Low |
Normal |
P5C |
O |
PLL Power ON/OFF |
19 |
P35/SOUT |
ON |
OFF |
EICD |
I |
EEPROM Unit Detection |
20 |
P34/SIN |
Equipped |
Nothing |
XWR |
I |
External EEPROM Write Cycle Detection |
21 |
P33rr |
Normal |
Write cycle |
RE2 |
I |
Rotary Encoder Input 2 |
22 |
P32/INT2 |
|
|
SCOM |
O |
Band Plan Scan Output |
23 |
P3l/XCIN |
H(Hiz) |
Low Active |
P.H/L |
O |
Transmit Power Switch |
24 |
P30/XCOUT |
Low Power |
High Power |
BU |
I |
Back up Mode Input |
25 |
INT1 |
Normal |
Negative Edge Triggered |
|
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|
26 |
CNVss |
|
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RES |
I |
Reset Input |
27 |
RESET |
at Work |
on Reset |
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Clock Input 3.58MHz |
28 |
XIN |
|
|
|
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Clock Output 3.58MHz |
29 |
XOUT |
|
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|
|
Ground |
30 |
Vss |
|
|
TSQD |
I |
Tone Detecton Input |
31 |
P17 |
Undetected |
Detected |
TICD |
I |
Tone Unit Detection |
32 |
P16 |
Nothing |
Equipped |
BP1 |
I |
Band Plan(TX) |
33 |
P15 |
Expanded |
Normal |
BP2 |
I |
Band Plan(RX) |
34 |
P14 |
Expanded |
Normal |
BP3 |
I |
Band PIan(TX,RX) |
35 |
P13 |
Expanded |
Normal |
BP4 |
I |
Band Plan(Channelstep) |
36 |
P12 |
Expanded |
Normal |
BP5 |
I |
Band Plan(OffsetFreq.) |
37 |
P11 |
Expanded |
Normal |
CH |
I |
Band Plan(ChanneIDisp.) |
38 |
P10 |
Expanded |
Normal |
SLC |
O |
CIock for EEPROM IC |
39 |
P07 |
Normal:Hiz |
Output: Pluse |
SDA |
I/O |
Data for EEPROM IC |
40 |
P06 |
Normal:Hiz |
Output: Pluse |
CLK |
O |
Clock for PLL,TONE IC |
41 |
P05 |
Output:Pluse |
Normal:L |
DTA |
O |
Data for PLL,TONE IC |
42 |
P04 |
Output:Pluse |
Normal:L |
STB1 |
O |
Strobe for PLL IC |
43 |
P03 |
Output:Pluse |
Normal:L |
STB2 |
O |
Strobe for TONE IC |
44 |
P02 |
Output:Pluse |
Normal:L |
FUNC |
I |
Function Key Input |
45 |
P0l |
OFF |
ON |
SD |
I |
Signal Detection Input |
46 |
P00 |
Received |
Nothing |
TBST |
I |
Tone Burst Key Input |
47 |
P27 |
OFF |
ON |
CALL |
I |
CALL(APO) |
48 |
P26 |
OFF |
ON |
LAMP |
I |
LAMP (FLJPL) |
49 |
P25 |
OFF |
ON |
MONI |
I |
MONl(P.H/L) |
50 |
P24 |
OFF |
ON |
TONE |
I |
TONE(MW) |
51 |
P23 |
OFF |
ON |
V/M |
I |
V/M(OFFSET) |
52 |
P22 |
OFF |
ON |
T.SCAN |
I |
T.SCAN(CH STEP) |
53 |
P2l |
OFF |
ON |
PTT |
I |
PTT Key Input |
54 |
P20 |
OFF |
ON |
|
|
|
55 |
VL3 |
|
|
|
|
|
56 |
VL2 |
|
|
|
|
|
57 |
VL1 |
|
|
COM0 |
O |
Common Output |
58 |
COM0 |
|
|
COM1 |
O |
Common Output |
59 |
COM1 |
|
|
COM2 |
O |
Common Output |
60 |
COM2 |
|
|
|
|
|
61 |
COM3 |
|
|
SEG0 |
O |
Segment Output |
62 |
SEGO |
|
|
SEG1 |
O |
Segment Output |
63 |
SEGl |
|
|
SEG2 |
O |
Segment Output |
64 |
SEG2 |
|
|
SEG3 |
O |
Segment Output |
65 |
SEG3 |
|
|
SEG4 |
O |
Segment Output |
66 |
SEG4 |
|
|
SEG5 |
O |
Segment Output |
67 |
SEG5 |
|
|
SEG6 |
O |
Segment Output |
68 |
SEG6 |
|
|
SEG7 |
O |
Segment Output |
69 |
SEG7 |
|
|
SEG8 |
O |
Segment Output |
70 |
SEG8 |
|
|
SEG9 |
O |
Segment Output |
71 |
SEG9 |
|
|
SEG10 |
O |
Segment Output |
72 |
SEG10 |
|
|
SEG11 |
O |
Segment Output |
73 |
SEG11 |
|
|
SEG12 |
O |
Segment Output |
74 |
SEG12/P43 |
|
|
SEG13 |
O |
Segment Output |
75 |
SEG13/P42 |
|
|
SEG14 |
O |
Segment Output |
76 |
SEGl4/P4l |
|
|
SEG15 |
O |
Segment Output |
77 |
SEG15/P40 |
|
|
SEG16 |
O |
Segment Output |
78 |
SEG16/IN7 |
|
|
SEG17 |
O |
Segment Output |
79 |
SEG17/IN6 |
|
|
SEG18 |
O |
Segment Output |
80 |
SEG18/IN5 |
|
|
SEG19 |
O |
Segment Output |
1 |
SEG19/lN4 |
|
|
SEG20 |
O |
Segment Output |
2 |
SEG20/IN3 |
|
|
SEG2l |
O |
Segment Output |
3 |
SEG21/IN2 |
|
|
SEG22 |
O |
Segment Output |
4 |
SEG22/IN1 |
|
|
SEG23 |
O |
Segment Output |
5 |
SEG23/IN0 |
|
|
|
|
Ground |
6 |
AVss |
|
|
|
|
+4V |
7 |
Vref |
|
|
|
|
+4V |
8 |
Vcc |
|
|
Page 7
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