Alinco Dj-195 Service Manual

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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...

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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....

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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...

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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...

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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...

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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...

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PC BOARD VIEWMAIN SIDE A
MAIN Side B 

28SCHEMATIC DIAGRAM