Alinco Dj-195 Service Manual

							20
AF0012 Screw OPH M2+4 FE/ZN3
AF0029 Screw 0PH 2+9  FE/N 3
AK0001 0PH B2+4  FE/N 3
AN0012 Nut RND N7X0.75 BR/B.ZN
DG0035 LCD LIGHT
DP0126 LCD PANLE DJ195
ES0011AZ Speaker 036M9014
FF0029 Sheet
FG0274 DC CAP
FG0285 16 KEY RUBBER DJ195
FG0286 JACK CAP DJ195
FG0289 TERMINAL RUBBER 195
FG0290 PTT RUBBER DJ195
FG0291 LCD RUBBER CONNECT.
FM0176 PLUS TERMINAL DJ195
FM0177 RADIATIVE PLATE 195
FM0178 DJ195
FM0179 ANTENNA EARTH DJ195
FP0142 BLIND SHEET DJ195
KZ0098 FRONT CASE DJ195
MACLH2GG W ire #30AH1-025-H1
NK0068 DIAL KNOB DJ195
RD0108 J1/6Z
SS0092 CHASSIS DJ195
ST0063 LCD HOLDER DJ195
TG0033 SP HIMELON DJ195
TL0022 REFLECTIVE SHEET 195
TS0142 VCO case   XH655
TW 0020 W.PROOF  A  XH720
UE0029A ANT.CONNECT.DJ460UR0019 Dial RH70N00E20 (RY-6320)
YX0024 LCD TAPE DJ195
EA57 AntennaT.E.EAH
EA58 AntennaTFH.TLH
PR0309 CE labelE.EAH
EBP-48N EBP-48N
HK0465 Pacage
HM0189 Carton 10
HU0150 Inner C
HU0151 Inner 5
BH0011 Belt clip
BB0009Y Strap
HP0003 Protection Bag 5*75*110
PR0237 FCC label
DS0388A Spec.sheet
E.EAH.TFH.TLHDS0411 Spec.sheet DJ195TT
PS0313A Instruction Manual
HH0061 Air cap
EDC93 Wall charger EDC-93T
EDC94 Wall charger EDC-94
E.EAH.TFH.TLHPH0009A WarrantyT
PT0004A Serial No. Carton
PK0076 Schematic Diagram
PR0421 Serial No. label
DS0388A Spec. sheet with out Serial
E.EAH.TFH.TLHDS0411Spec. sheet DJ195 with out SerialT
Packing Parts
Ref.
No.P a r t s  N o . Description P a r t s  N a m e Ve rRef.
No.P a r t s  N o . Description P a r t s  N a m e Ve r
Mechanical Parts 
						

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ADJUSTMENT
1) Required Test  Equipment
The following items are required to adjust radio parameters:
1. Regulated power supply
Supply voltage: 5-14V DC
Current: 3A or more
2. Digital multimeter
Voltage range: FS = Approx.  20V
Current: 10A or more
Input resistance: High impedance
3. Oscilloscope
Measurable frequency: Audio frequency
4. Audio dummy load
Impedance: 8Ω
Dissipation: 1W or more
Jack: 3.5mmΦ
5. SSG
Output frequency: 200MHz or more
Output level: -20dBu/0.1uV -120dBu/1V
Modulation: FM
6. Spectrum Analyzer
Measuring range: Up to 2GHz or more
7. Power meter
Measurable frequency: Up to 200MHz
Impedance: 50Ω, unbalanced
Measuring range: 0.1W -10W
8. Audio volmeter
Measurable frequency: Up to 100kHz
Sensitivity: 1mV to 10V
9. Audio generator
Output frequency: 67Hz to 10kHz
Output impedance: 600Ω, unbalanced
10.Distortion meter/SINAD meter
Measurable frequency: 1kHz
Input level: Up to 40dB
Distortion: 1% - 100%
11.Frequency counter
Measurable frequency: Up to 200MHz
Measurable stability: Approx.  +/-0.1ppm 
						

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12.Linear detector
Measurable frequency: Up to 200MHz
Characteristics: Flat
CN: 60dB or more
Note

Standard modulation: 1kHz +/-3.5kHz/DEV

Reference sensitivity: 12dB SINAD

Specified audio output leve: 200mW at 8Ω

Standard audio output level: 50mW at 8Ω

Use an RF cable (3D2W:1m) for test equipment.

Attach a fuse to the RF test equipment.

All SSG outputs are indicated by EMF.

Supply voltage for the transceiver: 13.8VDC 
						

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2) Adjustment Mode
The DJ-195 does not require a serviceperson to manipulate the components
on the printed-circuit board, except the trimmer when adjusting reference fre-
quency and deviation.Most of the adjustments for the transceiver are made by
using the keys on it while the unit is in the adjustment mode.Because the ad-
justment mode temporarily uses the channels, frequency must be set on each
channel before adjustments can be made.For instructions on how to program
the channels, see the “DJ-195 INSTRUCTION MANUAL” which came with the
product.In consideration of the radio environment, the frequency on each chan-
nel must be near the value (+/-1MHz) listed in the table below.To enter the
adjustment mode, set key lock and input 490217.Decimal point at 100MHz and
10MHz appears in LCD. (To release the mode, set key-lock and input 490217.)
Channel frequencies used in the adjustment mode
Channel Channel function Frequency
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17Reference frequency adjustment
High power adjustment
Low power adjustment
Minimum frequency sensitivity adjustment
Medium frequency sensitivity adjustment
Maximum frequency sensitivity adjustment
S-meter ( 1 ) adjustment
S-meter ( FULL ) adjustment
Deviation
DTMF ( 1 ) test
DTMF ( D ) test
Tone 67 Hz test
Tone 88.5 Hz test
Tone 250.3 Hz test
DCS code 255 test
Tone burst test
Aging ( Not required to use ) 145 MHz
145 MHz
145 MHz
130 MHz
145 MHz
174 MHz
145 MHz
145 MHz
145 MHz
145 MHz
145 MHz
145 MHz
145 MHz
145 MHz
145 MHz
145 MHz 
145 MHz   
						

							24
Reference Frequency Adjustment
1. In the adjustment mode, select channel 1 by rotating the main tuning dial.
2. Press the 
 key to start transmission.
3. Rotate TC1 on the Main board until the value on the frequency counter
matches the one displayed on the LCD.
4. On 145.05MHz measure TP1 near the VCO and to obtain 1.2V+0.1V
( If the frequency display is flashing, the PLL is unlocked. )
High Power Adjustment
1. In the adjustment mode, select channel 2 by rotating the main tuning dial.
2. Hold down the 
 key to star t transmission.
3. While watching the reading of the TX power meter, set the output power to
the value closest to 5 W by rotating the main tuning dial.
4. When the 
 key is released, the output power at that time will be
stored as the high power setting.
Low Power Adjustment
1. In the adjustment mode, select channel 3 by rotating the main tuning dial.
2. Hold down the 
 key to star t transmission.
3. While watching the reading of the TX power meter, set the output power to
the value closest to 0.8 W by rotating the main tuning dial.
4. When the 
 key is released, the output power at that time will be
stored as the low power setting.
Minimum Frequency Sensitivity Adjustment
See “Note on Adjusting the Sensitivity” later in this section.
1. In the adjustment mode, select channel 4 by rotating the main tuning dial.
2. Set the minimum frequency sensitivity rotating the main tuning dial, while F
appears after the 
 key is pressed.
Medium Frequency Sensitivity Adjustment
See “Note on Adjusting the Sensitivity” later in this section.
1. In the adjustment mode, select channel 5 by rotating the main tuning dial.
2. Set the medium frequency sensitivity rotating the main tuning dial, while F
appears after the 
 key is pressed.
Maximum Frequency Sensitivity Adjustment
See “Note on Adjusting the Sensitivity” later in this section.
1. In the adjustment mode, select channel 6 by rotating the main tuning dial.
2. Set the maximum frequency sensitivity rotating the main tuning dial, while F
appears after the 
 key pressed. 
						

							25
S-meter (1) Adjustment
1. In the adjustment mode, select channel 7 by rotating the main tuning dial.
The S-meter will show a single circle ( 
 )
2. Enter “0”dBu(EMF) with the transceiver tester (SSG).
3. Press the F key. The transceiver beeps indicating the new setting has been
stored successfully.
S-meter (FULL)
1. In the adjustment mode, select channel 8 by rotating the main tuning dial.
The S-meter will show all six circles ( 
 )
2. Enter “+20”dBu (EMF) with the transceiver tester (SSG).
3. Press the 
 key. The transceiver beeps indicating the new setting has
been stored successfully.
Deviation
1. In the adjustment mode, select channel 9 by rotating the main tuning dial.
2. Input a 50mVrms, 1KMz signal with your transceiver tester through the
external microphone jack.
3. With the tester, put the transceiver in the transmission mode.
4. Rotate the VR1 on the printed-curcuit board of the transceiver until the de-
viation is set to 4.5KHz.
DTMF (1) Test
This function is only for checking the DTMF code, not adjusting it.
1. In the adjustment mode, select channel 10 by rotating the main tuning dial.
2. Press the 
 key. DTMF code “1” is automatically sent and you will
hear the monitoring tone from the speaker.
3. Check the deviation with the transceiver tester.
DTMF (D) Test
1. In the adjustment mode, select channel 11 by rotating the main tuning dial.
2. Press the 
 key. DTMF code “D” is automatically sent and you will
hear the monitoring tone from the speaker.
3. Check the deviation with the transceiver tester.
Tone 67Hz Test
This function is only for checking the tone encoder, not adjusting it.
1. In the adjustment mode, select channel 12 by rotating the main tuning dial.
2. Press the 
 key. A 67Hz tone is automatically sent.
3. Check the deviation with the transceiver tester.
Tone 88.5Hz Test
1. In the adjustment mode, select channel 13 by rotating the main tuning dial.
2. Press the 
 key. An 88.5Hz tone is automatically sent.
3. Check the deviation with the transceiver tester. 
						

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Tone 250.3Hz Test
1. In the adjustment mode, select channel 14 by rotating the main tuning dial.
2. Press the 
 key. A 250.3Hz tone is automatically sent.
3. Check the deviation with the transceiver tester.
DCS Code 225 Test
1. In the adjustment mode, select channel 15 by rotating the main tuning dial.
2. Press the 
 key. An 255 DCS code is automatically sent.
3. Check the deviation with the transceiver tester.
Tone Burst Test
This function is only for checking the tone burst, not adjusting it.
1. In the adjustment mode, select channel 16 by rotating the main tuning dial.
2. Press the 
 key. A 1750Hz tone burst is automatically sent.
3. Check the deviation with the transceiver tester.
Aging
Perform this aging test only when necessary.
1. In the adjustment mode, select channel 17 by rotating the main tuning dial.
The transceiver automatically repeaters transmission for a minute and re-
ception for another minute.
Note on Adjusting Sensitivity
Sensitivity is adjusted by applying the optimum voltage from the CPU to the
varicap of the tuning circuit.
1. Program any frequency within 145MHz +/- 1MHz on memory channel 5.
2. To enter the adjustment mode, set key lock and input 490217. Decimal point
at 100MHz and 10MHz appears in LCD. (To release the mode, set key lock
and input 490217).
3. Select channel 5 by rotating the main tuning dial.
4. Press the 
 key and, while the F appears, rotate the main tuning
dial. Set the adjustment data to “
**” for maximizing the sensitivity (“**”
appears in the channel number area on the LCD).
5. Press the 
 key.
6. In the key lock mode, Input 490217. Decimal point at 100MHz and 10MHz
disappear. Turn the power OFF. The transceiver is in the normal status. 
						

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PC BOARD VIEWMAIN SIDE A
MAIN Side B 
						

							28SCHEMATIC DIAGRAM