Table of Contents
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DJ-195
Service Manual
CONTENTS
1) GENERAL ................................................................ 2
2) TRANSMITTER ........................................................ 2
3) RECEIVER ............................................................... 2
1) Receiver System .................................................. 3, 4
2) Transmitter System ................................................... 4
3) PLL Synthesizer Circuit ........................................ 4, 5
4) CPU and Peripheral Circuits ................................. 5, 6
GP (XA0644) ................................. 6~8
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1) NMJ2070M T1 (XA210) ............................................ 9
2) AT24C16N-10SI-2.7TER (XA0368) .......................... 9
3) M5222FP-600C (XA0385) ...................................... 10
4) TK14521MTL (XA0515) .......................................... 11
5) M64082AGP (XA0543) ........................................... 12
6) NJM2904V-TE1 (XA0573) ...................................... 12
7) NJM2902V-TE1 (XA0596) ...................................... 12
8) S-81250SG-QD-T1 (XA0619) ................................. 13
9) S-80845ALMP-EA9-T2 (XA0620) ........................... 13
10) Transistor, Diode, and LED Ontline Drawings ......... 14
11) LCD Connection (EL0044) .................................... 14
1) Front View ............................................................... 15
2) Rear View ............................................................... 16
MAIN Unit ......................................................... 17~19
Mechanical Parts .................................................... 20
Packing Parts ......................................................... 20
1) Required Test Equipment .................................. 21, 22
2) Adjustment Mode ............................................. 23~26
MAIN Unit ............................................................... 27
..................................................... 29
............................................ 28
ALINCO,INC.
www.ALIMCO.ru
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Summary of Contents for Alinco DJ-195
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Page 1: Table Of Contents
DJ-195 Service Manual CONTENTS SPECIFICATIONS EXPLODED VIEW 1) GENERAL ..............2 1) Front View ............... 15 2) TRANSMITTER ............2 2) Rear View ............... 16 3) RECEIVER ............... 2 PARTS LIST CIRCUIT DESCRIPTION MAIN Unit ............17~19 1) Receiver System ..........3, 4 Mechanical Parts ............ -
Page 3: Specifications
SPECIFICATIONS 1) GENERAL Frequency coverage : TX 144 ~ 147.995MHz RX 135 ~ 173.995MHz : TX 144 ~ 145.995MHz RX 144 ~ 145.995MHz EAH : TX 135 ~ 173.995MHz RX 135 ~ 135.995MHz TFH : TX 150 ~ 173.995MHz RX 135 ~ 173.995MHz TLH : TX 150 ~ 173.995MHz RX 135 ~ 173.995MHz Mode F3E (FM) -
Page 4: Circuit Description
CIRCUIT DESCRIPTION 1) Receiver System The receiver system is a double superheterodyne system with a 21.7MHz first IF and a 450kHz second IF. 1. Front End The received signal at any frequency in the 130.00- to 173.995-MHz range is passed through thelow-pass filter (L2, L3, L11, C13, C14, C15 and C60) and tuning circuit (L16 and D15), and amplified by the RF amplifier (Q11). -
Page 5: Transmitter System
5. Squelch Circuit The signal except for the noise component in AF signal of IC5 is cut by the active filter inside IC. The noise component is amplified and rectified, then con- verted to the DC voltage to output from pin13 of IC5. The voltage is led to pin 2 of CPU and compared with the setting voltage. -
Page 6: Cpu And Peripheral Circuits
3. Phase Comparator Circuit The PLL (IC1) uses the reference frequency, 5 or 6.25kHz. The phase com- parator in the IC1 compares the phase of the frequency from the VCO with that of the comparison frequency, 5 or 6.25kHz, which is obtained by the internal divider in IC1. -
Page 7: M3826M8L *** Gp (Xa0644)
6. Tone Encoder The CPU (IC9) is equipped with an internal tone encoder.The tone signal (67.0 to 250.3Hz) is output from pin 9 of the CPU to the varicap (D3) of the VCO for modulation. 7. DCS Encoder The CPU (IC9) is equipped with an internal DCS code encoder. The code (023 to 754) is output from pin 9 of the CPU to the varicap (D3) of the PLL reference oscillator. - Page 8 Pin Name Function I/O PU Logic Description P67/AN7 S-meter input P66/AN6 Noise level input for squelch P65/AN5 Low battery detection input P64/AN4 CTCSS tone input/DSC code input 5 P63/SCLK22/AN3 Band plan 1 6 P62/SCLK21/AN2 Band plan 2 7 P61/SOUT2/AN1 DCSW Activ high DCS signal mute P60/SIN2/AN0...
- Page 9 Pin Name Function I/O PU Logic Description P06/SEG32 Activ high AF tone control P05/SEG31 P04/SEG30 P03/SEG29 P02/SEG28 P01/SEG27 P00/SEG26 P37/SEG25 P36/SEG24 P35/SEG23 P34/SEG22 P33/SEG21 P32/SEG20 P31/SEG19 P30/SEG18 SEG17 SEG16 LCD segment signal SEG15 SEG14 SEG13 SEG12 SEG11 SEG10 SEG9 SEG8 SEG7 SEG6 SEG5...
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Page 10: Semiconductor Data
SEMICONDUCTOR DATA 1) NMJ2070M T1 (XA210) Low Voltage Power Amplifier Equivalent Circuit 2) AT24C16N-10SI-2.7TER (XA0368) 16K bits CMOS Serial EEPROM... -
Page 11: M5222Fp-600C (Xa0385)
3) M5222FP-600C (XA0385) Electronic Volume... -
Page 12: Tk14521Mtl (Xa0515)
4) TK14521MTL (XA0515) IF System... -
Page 13: M64082Agp (Xa0543)
5) M64082AGP (XA0543) 6) NJM2904V-TE1 (XA0573) Dual Single Supply Operational Amplifier 7) NJM2902V-TE1 (XA0596) Quad Single Supply Operational Amplifier... -
Page 14: S-81250Sg-Qd-T1 (Xa0619)
8) S-81250SG-QD-T1 (XA0619) Top View 9) S-80845ALMP-EA9-T2 (XA0620) Voltage Regulator... -
Page 15: Transistor, Diode, And Led Ontline Drawings
10) Transistor, Diode, and LED Ontline Drawings Top View RSL135 TE11 DA204U T106 1SV214 TPH4 MA741WA TX MA741WK S3DG7 MA729-TX XD0066 XD0130 XD0131 XD0251 XD0252 XD0261 XD0291 U2FWJ44N (TE12R) MA2S30400L MA2S111-TX HSU277TRF RB706F-40-T106 MRF9745T1 2SK2975-T11-A XD0294 XD0312 XD0323 XD331 XD0332 XE0034 XE0038 2SK882-GR-TE85L... -
Page 16: Exploded View
EXPLODED VIEW 1) Front View www.ALIMCO.ru... -
Page 17: Rear View
2) Rear View... -
Page 18: Parts List
PARTS LIST Ref. Ref. Parts No. Description Parts Name Parts No. Description Parts Name CU0108 Chip C LMK212BJ105KG Main Unit CU3035 Chip C C1608JB1H102KT-AS CU3035 Chip C C1608JB1H102KT-AS CU3016 Chip C C1608CH1H270JT-AS CU3035 Chip C C1608JB1H102KT-AS CU3035 Chip C C1608JB1H102KT-AS CS0404 Chip Tantal 6MCM106MATER... - Page 19 Ref. Ref. Parts No. Description Parts Name Parts No. Description Parts Name C158 CU0108 Chip C LMK212BJ105KG XE0038 2SK2975-T11-A C159 CU3035 Chip C C1608JB1H102KT-AS XE0034 MRF9745T1 C160 CU3047 Chip C C1608JB1H103KT-N XT0171 Transistor 2SC4808-TX.AR C161 CS0404 Chip Tantal 6MCM106MATER XT0171 Transistor 2SC4808-TX.AR C162...
- Page 20 Ref. Ref. Parts No. Description Parts Name Parts No. Description Parts Name RK3074 Chip R MCR03EZHJ105 R137 RK3062 Chip R MCR03EZHJ104 RK3022 Chip R MCR03EZHJ470 R138 RK3069 Chip R MCR03EZHJ394 RK3042 Chip R MCR03EZHJ222 R139 RK3038 Chip R MCR03EZHJ102 RK3074 Chip R MCR03EZHJ105 R140...
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Page 21: Mechanical Parts
Ref. Ref. Parts No. Description Parts Name Parts No. Description Parts Name Mechanical Parts UR0019 Dial RH70N00E20 (RY-6320) YX0024 LCD TAPE DJ195 AF0012 Screw OPH M2+4 FE/ZN3 AF0029 Screw 0PH 2+9 FE/N 3 Packing Parts AK0001 0PH B2+4 FE/N 3 AN0012 RND N7X0.75 BR/B.ZN T.E.EAH... -
Page 22: Adjustment
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. - Page 23 12.Linear detector Measurable frequency: Up to 200MHz Characteristics: Flat 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.
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Page 24: Adjustment Mode
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... - Page 25 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.
- Page 26 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.
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Page 27: Adjustment Mode
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. -
Page 29: Pc Board View
PC BOARD VIEW MAIN SIDE A MAIN Side B... -
Page 30: Schematic Diagram
SCHEMATIC DIAGRAM... -
Page 31: Block Diagram
BLOCK DIAGRAM www.ALIMCO.ru... - Page 34 U.S.A. : 438 Amapola Ave., Suite 130, Torrance, CA 90501-6201, U.S.A. Phone: 310-618-8616 Fax: 310-618-8758 http://www.alinco.com/ Germany : Eschborner Landstrasse 55, 60489 Frankfurt am Main, Germany Phone: 069-786018 Fax: 069-789-60766 Dealer/Distributor Copyright 1999 Alinco, lnc. Osaka Japan Printed in Japan PM0058...