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DJ-175 Schematic ( PDF Datasheet ) - ALINCO

Teilenummer DJ-175
Beschreibung Service Manual
Hersteller ALINCO
Logo ALINCO Logo 



Gesamt 28 Seiten
		
DJ-175 Datasheet, Funktion
Service Manual
DJ-175
Specifications
Circuit Description
Parts List
Exploded View
PC Board View
Adjustment
Schematic Diagram
Block Diagram
http://www.DataSheet4U.net/
ALINCO, INC.
datasheet pdf - http://www.DataSheet4U.net/






DJ-175 Datasheet, Funktion
4) CPU and Peripheral Circuits
1. LCD Display Circuit
The CPU turns ON the LCD via segment and common terminals with 1/4 the
duty and 1/3 the bias, at the frame frequency is 112.5Hz.
2. Display Lamp Circuit
When the LAMP key is pressed, “L” is output form pin 67 of CPU ( IC113) to
the bases of Q140. Q140 then turn ON and the LEDs (D128 and D129) light.
3. Reset and Backup
When the power form the DC jack or external battery increases from Circuits
0V to 2.5 or more, “ H “ level reset signal is output form the reset IC (IC108) to
pin 6 of the CPU (IC113), causing the CPU to reset. The reset signal, however,
waits at 100, and does not enter the CPU until the CPU clock (X104) has
stabilized.
4. S (Signal) Meter Circuit
The DC potential of pin 12 of IC103 is input to pin 83 of the CPU (IC113),
converted from an analog to a digital signal, and displayed as the S-meter
signal on the LCD.
5. DTMF Encoder
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The CPU (IC113) is equipped with an internal DTMF encoder. The DTMF
signal is output from pin 71, through IC112 (Low-pass filter), and then through
the microphone amplifier (IC110), and is sent to the varicap of the VCO for
modulation. At the same time, the monitoring tone passes through the AF
circuit and is output form the speaker.
6. TONE Encoder
The CPU (IC113) is equipped with an internal tone encoder. The tone signal
(67.0 to 250.3Hz ) is output from pin 70 of the CPU to the 21.25MHz reference
oscillation (X102) of the PLL reference oscillator.
7. DCS Encoder
The CPU (IC113) is equipped with an internal DCS code encoder. The code
(023 to 754) is output from pin 70 of the CPU to the 21.25MHz reference
oscillation (X102) of the PLL reference oscillator.
datasheet pdf - http://www.DataSheet4U.net/

6 Page







DJ-175 pdf, datenblatt
Ref. No. Parts No.
R206 RK3536
R206 RK3539
R207 RK3536
R207 RK3539
R208 RK3550
R209 RK3556
R210 RK3538
R211 RK3550
R212 RK3518
R213 RK3550
R214 RK3518
R215 RK3574
R216 RK3574
R217 RK3574
R218
R219 RK3550
R220 RK3574
R221 RK3574
R222 RK3564
R223
R225 RK3550
R225 RK3547
R226 RK3550
R227 RK3564
R228 RK3554
R229 RK3544
R230 RK3501
R231 RK3514
R233 RK3536
R234 RK3532
R235 RK3562
R237 RK3570
R239 RK3574
R240 RK3562
R241 RK3550
R242 RK3566
R243 RK3566
R244 RK3550
R245 RK3553
R246 RK3550
R247 RK3574
R248 RK3550
R249 RK3550
R250 RK3550
R251 RK3546
R252 RK3526
R253 RK3550
R254 RK3553
R255 RK3566
R256 RK3562
R257 RK1018
R258 RK3566
R259 RK3501
R260 RK3562
R261
R262 RK3542
R263 RK3554
R265 RK3550
R266 RK3574
R267 RK3538
R268 RK3562
R269 RK3558
R270 RK3550
R271 RK3538
R273 RK3560
Parts name
1005 1/16W 680 OHM J
1005 1/16W 1.2K OHMJ
1005 1/16W 680 OHM J
1005 1/16W 1.2K OHMJ
1005 1/16W 10K OHM J
1005 1/16W 33K OHM J
1005 1/16W 1.0K OHMJ
1005 1/16W 10K OHM J
1005 1/16W 22 OHM J
1005 1/16W 10K OHM J
1005 1/16W 22 OHM J
1005 1/16W 1.0M OHMJ
1005 1/16W 1.0M OHMJ
1005 1/16W 1.0M OHMJ
1005 1/16W 10K OHM J
1005 1/16W 1.0M OHMJ
1005 1/16W 1.0M OHMJ
1005 1/16W 150K OHMJ
1005 1/16W 10K OHM J
1005 1/16W 5.6K OHMJ
1005 1/16W 10K OHM J
1005 1/16W 150K OHMJ
1005 1/16W 22K OHM J
1005 1/16W 3.3K OHMJ
1005 1/16W 0 OHM J
1005 1/16W 10 OHM J
1005 1/16W 680 OHM J
1005 1/16W 330 OHM J
1005 1/16W 100K OHMJ
1005 1/16W 470K OHMJ
1005 1/16W 1.0M OHMJ
1005 1/16W 100K OHMJ
1005 1/16W 10K OHM J
1005 1/16W 220K OHMJ
1005 1/16W 220K OHMJ
1005 1/16W 10K OHM J
1005 1/16W 18K OHM J
1005 1/16W 10K OHM J
1005 1/16W 1.0M OHMJ
1005 1/16W 10K OHM J
1005 1/16W 10K OHM J
1005 1/16W 10K OHM J
1005 1/16W 4.7K OHMJ
1005 1/16W 100 OHM J
1005 1/16W 10K OHM J
1005 1/16W 18K OHM J
1005 1/16W 220K OHMJ
1005 1/16W 100K OHMJ
3216 1/8 W 100 OHM J
1005 1/16W 220K OHMJ
1005 1/16W 0 OHM J
1005 1/16W 100K OHMJ
1005 1/16W 2.2K OHMJ
1005 1/16W 22K OHM J
1005 1/16W 10K OHM J
1005 1/16W 1.0M OHMJ
1005 1/16W 1.0K OHMJ
1005 1/16W 100K OHMJ
1005 1/16W 47K OHM J
1005 1/16W 10K OHM J
1005 1/16W 1.0K OHMJ
1005 1/16W 68K OHM J
Version
EUK
T, E, TFH
EUK
T, E, TFH
T, E, TFH
EUK
T, E, EUK
T, E, EUK
T, E, EUK
T, E, EUK
T, E, EUK
T, E, EUK
T, E, EUK
Ref. No.
R276
R277
R278
R279
R280
R281
R282
R283
R284
R285
R286
R287
R288
R289
R290
R291
R292
R293
R294
R295
R297
R298
R299
R300
R301
R302
R303
R304
R305
R306
R307
R308
R309
R310http://www.DataSheet4U.net/
R311
R312
R313
R314
R316
R317
R318
R319
R320
R321
R324
R325
R326
R327
R328
R329
R329
R330
R330
R331
R333
R334
R335
R336
R337
R338
R339
R340
R341
R342
R343
Parts No.
RK3552
RK3552
RK3550
RK3514
RK3562
RK3562
RK3538
RK3550
RK3550
RK3562
RK3562
RK3550
RK3560
RK3558
RK3566
RK3558
RK3562
RK3562
RK3562
RK3562
RK3550
RK3554
RK3554
RK3556
RK3550
RK3554
RK3559
RK3550
RK3568
RK3536
RK3562
RK3550
RK3550
RK3546
RK3550
RK3550
RK3559
RK3559
RK3550
RK3570
RK3546
RK3559
RK3562
RK3558
RK3558
RK3562
RK3566
RK3559
RK3556
RK3557
RK3550
RK3551
RK3550
RK3546
RK3546
RK3546
RK3546
RK3558
RK3558
RK3552
RK3562
RK3537
RK3550
Parts name
1005 1/16W 15K OHM J
1005 1/16W 15K OHM J
1005 1/16W 10K OHM J
1005 1/16W 10 OHM J
1005 1/16W 100K OHMJ
1005 1/16W 100K OHMJ
1005 1/16W 1.0K OHMJ
1005 1/16W 10K OHM J
1005 1/16W 10K OHM J
1005 1/16W 100K OHMJ
1005 1/16W 100K OHMJ
1005 1/16W 10K OHM J
1005 1/16W 68K OHM J
1005 1/16W 47K OHM J
1005 1/16W 220K OHMJ
1005 1/16W 47K OHM J
1005 1/16W 100K OHMJ
1005 1/16W 100K OHMJ
1005 1/16W 100K OHMJ
1005 1/16W 100K OHMJ
1005 1/16W 10K OHM J
1005 1/16W 22K OHM J
1005 1/16W 22K OHM J
1005 1/16W 33K OHM J
1005 1/16W 10K OHM J
1005 1/16W 22K OHM J
1005 1/16W 56K OHM J
1005 1/16W 10K OHM J
1005 1/16W 330K OHMJ
1005 1/16W 680 OHM J
1005 1/16W 100K OHMJ
1005 1/16W 10K OHM J
1005 1/16W 10K OHM J
1005 1/16W 4.7K OHMJ
1005 1/16W 10K OHM J
1005 1/16W 10K OHM J
1005 1/16W 56K OHM J
1005 1/16W 56K OHM J
1005 1/16W 10K OHM J
1005 1/16W 470K OHMJ
1005 1/16W 4.7K OHMJ
1005 1/16W 56K OHM J
1005 1/16W 100K OHMJ
1005 1/16W 47K OHM J
1005 1/16W 47K OHM J
1005 1/16W 100K OHMJ
1005 1/16W 220K OHMJ
1005 1/16W 56K OHM J
1005 1/16W 33K OHM J
1005 1/16W 39K OHM J
1005 1/16W 10K OHM J
1005 1/16W 12K OHM J
1005 1/16W 10K OHM J
1005 1/16W 4.7K OHMJ
1005 1/16W 4.7K OHMJ
1005 1/16W 4.7K OHMJ
1005 1/16W 4.7K OHMJ
1005 1/16W 47K OHM J
1005 1/16W 47K OHM J
1005 1/16W 15K OHM J
1005 1/16W 100K OHMJ
1005 1/16W 820 OHM J
1005 1/16W 10K OHM J
TFH
T, E, EUK
TFH
T, E, EUK
datasheet pdf - http://www.DataSheet4U.net/

12 Page

SeitenGesamt 28 Seiten
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