Alinco DJ-175 Service Manual

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Service Manual

DJ-175

Specifications Circuit Description

Parts List

Exploded View PC Board View

Adjustment

Schematic Diagram Block Diagram

ALINCO, INC

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SPECIFICATIONS DJ-175

Frequency range:

T: TX 144 ~ 147.995MHz *144 ~ 147.995MHz

RX 136 ~ 173.995MHz *144 ~ 147.995MHz

E: TX 144 ~ 145.995MHz *144 ~ 145.995MHz

RX 144 ~ 145.995MHz *144 ~ 145.995MHz

TFH: TX 136 ~ 173.995MHz *150 ~ 173.995MHz

RX 136 ~ 173.995MHz *150 ~ 173.995MHz

* Guaranteed range per specifications

Modulation: Channel steps: Memory channels:

Antenna impedance:

Frequency stability: Microphone impedance: Power supply:

Current drain (Approx.):

Temperature range: Ground:

Dimension:

Weight:

DTMF:

Subaudible Tone (CTCSS):

Digital Code SQ. (DCS):

F3E (FM), F2D* *T/E models only 5, 10, 12.5, 20, 25 & 30KHz 200 channels + 1 CALL channel + 1 Repeater-Access function memory 50 Q unbalanced +/- 2.5ppm 2k ohm nominal

7.2V/ 7.4V (Battery only)

1.5A Transmit high at 5W 250mA Receive at 500mW 70mA Stand-by 30mA Battery save on

-10 ~ +45°C (+14 ~ 113°F) Negative ground

58(W) x 107.5(H) x 36.3(D) mm

2.28(W) x 4.23(H) x 1.43(D) inches Approx. 245g/ 8.7oz with EBP-72 & antenna 16 Buttons Keypad

encode/decode 39 tones

encode/decode 104 codes

Output power (Approx.):

Modulation Max. deviation

Spurious emission

Receive system

Intermediate frequencies Sensitivity (12dB SINAD) Selectivity

Audio output power

**Narrow FM models are available depending on areas of distribution.

5W (High)/ 2W (Middle)/ 0.5W (Low) Variable reactance frequency modulation

±5KHz

(±2.5KHz)**

-60dB or less

Double conversion superheterodyne

1st: 21.7MHz / 2nd: 450KHz

-14dB|j (0.2jV)

-6dB: 12KHz or more/ -60dB: 26KHz or less (-6dB: 6KHz or more/ -60dB: 14KHz or less)** 500mW (8 Q, MAX) 400mW (8 Q , 10% THD)

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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 frequency in the 136~173.995MHz (E version:

144~145.995MHz) range is passed through the low-pass filter (L101, L102, L104, L118, C101, 108, C109, C110, C117, C118, C119, C123, C124, C125,

C126, C127, and C188) and tuning circuit (C255, C256, C257, C258, D120,

L138, and L139) and amplified by the RF amplifier (Q119). The signal from Q119 is then passed through the tuning circuit (C242, C243, C244, C245, C269, C270, C271, D117, D118, D119, L135, L136, and L137) and converted into 21.7MHz by the mixer (Q118). The tuning circuit, which consists of L139, L135, L136, varicaps D117, D118, D119, and D120 is controlled by the tracking voltage from the CPU so that it is optimized for the reception frequency. The local signal from the VCO is passed through the buffer (Q115), and supplied to the source of the mixer (Q118). The radio uses the lower side of the superheterodyne system.

2. IF Circuit

The mixer mixes the received signal with the local signal to obtain the sum of and difference between them. The crystal filter (FL101, and FL102) selects

21.7MHz frequency from the results and eliminates the signal of the unwanted frequencies. The first IF amplifier (Q121) then amplifies the signal of the selected frequency.

3. Demodulator Circuit

After the signal is amplified by the first IF amplifier (Q121), it is input to pin 16 of the demodulator IC (IC103). The second local signal of 21.25MHz (shared with PLL IC reference oscillation), which is oscillated by the TCXO (X102). Then, these two signals are mixed by the internal mixer in IC103 and the result is converted into the second IF signal with a frequency of 450kHz. The second

IF signal is output from pin 3 of IC103 to the ceramic filter (FL103), where the unwanted frequency band of that signal is eliminated, and the resulting signal is sent back to the IC103 through pin 5. The second IF signal input via pin 5 is demodulated by the internal limiter amplifier and quadrature detection circuit in IC103, and output as an audio signal through pin 9.

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4. Audio Circuit

The audio signal from pin 9 of IC103 is amplified by the AF amplifier (Q120). The signal is then input to pin 16 of the electronic volume (IC105) for volume adjustment, and output from pin 14. The adjusted signal is sent to the audio power amplifier (IC104) through pin 2 to drive the speaker.

5. Squelch Circuit

The signal except for the noise component in AF signal of IC103 is cut by the active filter inside IC. The noise component is amplified and rectified, then converted to the DC voltage to output from pin 14 of IC103. The voltage is led to pin 2 of CPU and compared with the setting voltage. The squelch will open if the input voltage is lower than the setting voltage.

2) Transmitter System

1. Modulator Circuit

The audio signal is converted to an electric signal in either the internal or external microphone, and input to the microphone amplifier (IC110). IC110 consists of two operational amplifiers; one amplifier (pins 12, 13, and 14) is composed of pre-emphasis and IDC circuits and the other (pins 5, 6, 7, 8, 9, and 10) is composed of a splatter filter. The maximum frequency deviation is obtained by IC105 and input to the cathode of the varicap of the VCO, to change the electric capacity in the oscillation circuit. This produces the frequency modulation.

2. Power Amplifier Circuit

The transmitted signal is oscillated by the VCO, amplified by the pre-drive amplifier (Q101) and drive amplifier (Q106), and input to the final amplifier (Q105). The signal is then amplified by the final amplifier (Q105) and led to the antenna switch (D101) and low-pass filter (L104, L102, L101, C119, C118, C117, C127, C126, C125, C124, C108, and C101), where un-wanted high harmonic waves are reduced as needed, and the resulting signal is supplied to the antenna.

3. APC Circuit

Part of the transmission power from the low-pass filter is detected by D108, converted to DC, and then amplified by a amplifier (IC101). The output voltage controls the bias voltage from the source of Q105 and Q106 to maintain the transmission power constant.

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3) PLL Synthesizer System

1. PLL

The dividing ratio is obtained by sending data from the CPU (IC113) to pin 10 and sending clock pulse to pin 9 of the PLL IC ( IC101 ). The oscillated signal from the VCO is amplified by the buffer (Q116) and input to pin 8 of IC102.

Each programmable divider in IC102 divides the frequency of the input signal by N according to the frequency data, to generate a comparison frequency of 5 or 6.25kHz.

2. Reference Frequency Circuit

The reference frequency appropriate for the channel steps is obtained by dividing the 21.25MHz reference oscillation (X102) by 4250 or 3400, according to the data from the CPU (IC113). When the resulting frequency is 5kHz, channel steps of 5, 10, 15, 20, and 30kHz are used. When it is 6.25kHz, channel steps of 12.5, 25 , and 50kHz are used.

3. Phase Comparator Circuit

The PLL (IC102) uses the reference frequency, 5 or 6.25kHz. The phase comparator in the IC102 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 IC102.

4. PLL Loop Filter Circuit

If a phase difference is found in the phase comparison between the reference frequency and VCO output frequency, the charge pump output (pin 5) of IC102 generates a pulse signal, which is converted to DC voltage by the PLL loop filter and input to the varicap of the VCO unit for oscillation frequency control.

5. VCO Circuit

A Colpitts oscillation circuit driven by Q108 directly oscillates the desires frequency. The frequency control voltage determined in the CPU (IC113) and

PLL circuit is input to the varicaps (D105 and D107). This change the oscillation frequency, which is amplified by the VCO buffer (Q113) and output from the VCO unit.

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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

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.

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8. CTCSS, DCS Decoder

The voice band of the AF output signal from pin 9 of IC103 is cut by sharp active filter IC111 and amplified, then led to pin 80 of CPU. The input signal is compared with the programmed tone frequency code in the CPU. The squelch will open when they match.

9. Clock Shift

In the unlikely event that CPU clock noise is present on a particular operating frequency programmed into the radio, you can shift the CPU clock frequency to avoid the CPU clock-noise. The output signal from pin 8 of the CPU turns on Q127. Then the oscillation frequency of X104 will be shifted about 200 ppm.

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Parts List MAIN UNIT

Ref. No. Parts No. Parts name Version C101 CU3535 GRM36B102K50PT C102 CU3535 GRM36B102K50PT C103 CU3519 GRM36CH470J50PT C104 CU3535 GRM36B102K50PT C105 C108 CU3535 GRM36B102K50PT C109 CU3512 GRM36CH120J50PT C110 CU3505 GRM36CH040C50PT C111 C112 CU3520 GRM1552C1H560JD01D C113 CU3535 GRM36B102K50PT C114 CU3503 GRM36CK020C50PT C115 C116 CU3512 GRM36CH120J50PT C117 CU3513 GRM36CH150J50PT C118 CU3513 GRM36CH150J50PT C119 CU3513 GRM36CH150J50PT C120 C122 CU3559 GRM155B30J105KE18D C123 C124 CU3512 GRM36CH120J50PT C125 CU3512 GRM36CH120J50PT C126 CU3513 GRM36CH150J50PT C127 CU3514 GRM36CH180J50PT C129 CU3512 GRM36CH120J50PT C130 CU3514 GRM36CH180J50PT T, E, EUK C131 CU3517 GRM36CH330J50PT C132 CU3516 GRM36CH270J50PT C133 CU3517 GRM36CH330J50PT C134 CU3513 GRM36CH150J50PT C135 CU3513 GRM36CH150J50PT C136 CU3513 GRM36CH150J50PT C137 CU3535 GRM36B102K50PT C138 C139 C140 CU3554 GRM36B104K10PT C141 CU3535 GRM36B102K50PT C142 CU3502 GRM36CK010C50PT C144 C145 CU3535 GRM36B102K50PT C146 CU3535 GRM36B102K50PT C147 CU3506 GRM36CH050C50PT C149 CU3502 GRM36CK010C50PT C150 CU3502 GRM36CK010C50PT C151 CU3547 GRM36B103K16PT C152 CU3535 GRM36B102K50PT C153 C155 CU3535 GRM36B102K50PT C156 C157 CU3535 GRM36B102K50PT C158 CU3535 GRM36B102K50PT C159 CU3547 GRM36B103K16PT C160 CU3535 GRM36B102K50PT C161 CU3535 GRM36B102K50PT C162 C163 CU3535 GRM36B102K50PT C164 CS0441 TMCMA0J226MTRF C165 CU3535 GRM36B102K50PT C166 CU3513 GRM36CH150J50PT C167 CU3523 GRM1552C1H101JZ01D C168 CU3502 GRM36CK010C50PT C169 CU3502 GRM36CK010C50PT C171 CU3511 GRM36CH100D50PT C172 CU3535 GRM36B102K50PT

CU3535 GRM36B102K50PT

Ref. No. Parts No. Parts name C173 C174 C175 C176 CU3502 GRM36CK010C50PT C177 CU3535 GRM36B102K50PT C178 CU3513 GRM36CH150J50PT C179 CU3535 GRM36B102K50PT C180 CU3515 GRM36CH220J50PT C181 CU0119 GRM21BB30J106KE18L C182 CU3554 GRM36B104K10PT C183 CU3535 GRM36B102K50PT C184 CU3547 GRM36B103K16PT C185 CU3535 GRM36B102K50PT C186 C187 CU3513 GRM36CH150J50PT C188 CU3508 1005 CH 50V 7PF D C189 CU3535 GRM36B102K50PT C190 C191 CU3137 GRM188B31C105KA92D C192 CU3535 GRM36B102K50PT C193 CU3514 GRM36CH180J50PT C194 CU3554 GRM36B104K10PT C195 CU3535 GRM36B102K50PT C196 CU3502 GRM36CK010C50PT C197 CU3527 GRM1552C1E221JD01D C198 CU3554 GRM36B104K10PT C199 CU3515 GRM36CH220J50PT C200 CU3554 GRM36B104K10PT C201 CU3535 GRM36B102K50PT C202 CU3547 GRM36B103K16PT C203 CU3535 GRM36B102K50PT C204 CU3535 GRM36B102K50PT C205 CS0396 20V 0.1UF C206 CS0396 20V 0.1UF C207 CU3547 GRM36B103K16PT C209 CU3515 GRM36CH220J50PT T, E, EUK C209 CU3514 GRM36CH180J50PT TFH C210 CU3505 GRM36CH040C50PT C211 CU3526 GRM1552C1E181JD01D C212 CU3528 GRM1552C1E271JD01D C213 CU3526 GRM1552C1E181JD01D C214 CU3535 GRM36B102K50PT C215 CU3554 GRM36B104K10PT C216 C219 CS0398 6.3V 2.2UF C220 CU3535 GRM36B102K50PT C221 CU3535 GRM36B102K50PT C222 CU3535 GRM36B102K50PT C223 C224 CU3547 GRM36B103K16PT C225 CU3535 GRM36B102K50PT C226 CU3535 GRM36B102K50PT C227 CU3535 GRM36B102K50PT C228 CU3515 GRM36CH220J50PT C229 CU3515 GRM36CH220J50PT C230 CU3512 GRM36CH120J50PT C231 CU0119 GRM21BB30J106KE18L C232 CU3535 GRM36B102K50PT C233 CU3522 GRM1552C1H820JD01D C234 CU3547 GRM36B103K16PT C235 CU3519 GRM36CH470J50PT C236 CU3535 GRM36B102K50PT C237 CU3547 GRM36B103K16PT C238 CU3539 GRM36B222K50PT

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Ref. No. Parts No. Parts name Version C239 CU3547 GRM36B103K16PT C240 CU3535 GRM36B102K50PT C241 CU3539 GRM36B222K50PT C242 CU3535 GRM36B102K50PT C243 CU3573 GRM1554C1HR80BZ01D C244 CU3573 GRM1554C1HR80BZ01D C245 CU3523 GRM1552C1H101JZ01D C246 CU3554 GRM36B104K10PT C247 CU3554 GRM36B104K10PT C248 CU3559 GRM155B30J105KE18D C249 CU3537 GRM36B152K50PT C250 CU3537 GRM36B152K50PT C252 CU3535 GRM36B102K50PT C253 CU3543 GRM36B472K25PT C254 CU3549 1005 B 16V 0.015UF K C255 CU3535 GRM36B102K50PT C256 CU3516 GRM36CH270J50PT C257 CU3505 GRM36CH040C50PT C258 CU3523 GRM1552C1H101JZ01D C259 C260 CU3554 GRM36B104K10PT C261 CU3547 GRM36B103K16PT C262 CU3535 GRM36B102K50PT C263 CU3508 1005 CH 50V 7PF D T, E, TFH C263 CU3513 GRM36CH150J50PT EUK C264 CU3535 GRM36B102K50PT C265 CE0436 16CE47BSS C266 CU3137 GRM188B31C105KA92D C267 CU3535 GRM36B102K50PT C268 CU3535 GRM36B102K50PT C269 CU3523 GRM1552C1H101JZ01D C270 CU3523 GRM1552C1H101JZ01D C271 CU3523 GRM1552C1H101JZ01D C272 CU3535 GRM36B102K50PT C273 CU3547 GRM36B103K16PT C274 CU3554 GRM36B104K10PT C275 CU3535 GRM36B102K50PT C276 CU3523 GRM1552C1H101JZ01D C277 CU3535 GRM36B102K50PT C278 CU3523 GRM1552C1H101JZ01D C279 CU3547 GRM36B103K16PT C280 CS0441 TMCMA0J226MTRF C281 CU3535 GRM36B102K50PT C282 CU3554 GRM36B104K10PT C284 CU3559 GRM155B30J105KE18D C285 CU3554 GRM36B104K10PT C286 CU3527 GRM1552C1E221JD01D C287 CU3535 GRM36B102K50PT C288 CU3527 GRM1552C1E221JD01D C289 CU3535 GRM36B102K50PT C290 CU3554 GRM36B104K10PT C291 CU3138 GRM188B31C225KE14D C292 CE0436 16CE47BSS C293 CU3554 GRM36B104K10PT C294 CU3535 GRM36B102K50PT C295 C296 CE0463 10CE100BSS C297 C298 CU3535 GRM36B102K50PT C299 CU3137 GRM188B31C105KA92D C300 CU3554 GRM36B104K10PT C301 CU3535 GRM36B102K50PT C302 CE0462 6CE100BSS C303 CU3535 GRM36B102K50PT C304 CU3554 GRM36B104K10PT

Ref. No. Parts No. Parts name C305 CU3138 GRM188B31C225KE14D T, E, EUK C306 CU3559 GRM155B30J105KE18D C307 CU3535 GRM36B102K50PT C308 CU3138 GRM188B31C225KE14D C310 CU3137 GRM188B31C105KA92D C311 CU3535 GRM36B102K50PT C312 CU3554 GRM36B104K10PT T, E, EUK C313 CU3137 GRM188B31C105KA92D C314 CU3547 GRM36B103K16PT C315 CU3547 GRM36B103K16PT C316 CU3554 GRM36B104K10PT C317 CU3517 GRM36CH330J50PT C318 CU3516 GRM36CH270J50PT C319 C320 CU3535 GRM36B102K50PT C321 CU3535 GRM36B102K50PT C322 CU3559 GRM155B30J105KE18D C323 CU3535 GRM36B102K50PT C324 CU3559 GRM155B30J105KE18D C325 CU3554 GRM36B104K10PT C326 C327 CU3137 GRM188B31C105KA92D C328 CU3535 GRM36B102K50PT C329 CU3554 GRM36B104K10PT C330 CU3535 GRM36B102K50PT C331 CU0119 GRM21BB30J106KE18L C332 CU3535 GRM36B102K50PT C333 CU3535 GRM36B102K50PT C334 CU0119 GRM21BB30J106KE18L C335 CU3540 GRM36B272K50PT C336 CU3523 GRM1552C1H101JZ01D C337 CU3535 GRM36B102K50PT C338 CU3137 GRM188B31C105KA92D C339 CU3137 GRM188B31C105KA92D C340 CU3535 GRM36B102K50PT C341 CU3547 GRM36B103K16PT C342 CU3547 GRM36B103K16PT C343 CU3554 GRM36B104K10PT C344 CU3554 GRM36B104K10PT C345 CU3554 GRM36B104K10PT C346 CU3547 GRM36B103K16PT C347 CU3523 GRM1552C1H101JZ01D C348 CU3547 GRM36B103K16PT C349 CU3539 GRM36B222K50PT C350 CU3533 GRM36B681K50PT C351 C352 CU3547 GRM36B103K16PT C353 CU3539 GRM36B222K50PT C354 CU3541 GRM36B332K50PT C355 CU3547 GRM36B103K16PT C356 CU3535 GRM36B102K50PT C357 CU3535 GRM36B102K50PT C358 CU0119 GRM21BB30J106KE18L C359 CU3553 GRM36B473K10PT C360 CU3559 GRM155B30J105KE18D C361 CU3535 GRM36B102K50PT C362 CU3533 GRM36B681K50PT C363 CU3535 GRM36B102K50PT C364 CU3539 GRM36B222K50PT C365 CU3533 GRM36B681K50PT C366 CU3537 GRM36B152K50PT C367 CU3523 GRM1552C1H101JZ01D C368 CU3531 GRM36B471K50PT C369 CU3541 GRM36B332K50PT C370 CU3554 GRM36B104K10PT

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Ref. No. Parts No. Parts name Version C371 CU3535 GRM36B102K50PT C372 CU3559 GRM155B30J105KE18D C373 C375 CU3541 GRM36B332K50PT C376 CU3554 GRM36B104K10PT C377 CU3554 GRM36B104K10PT C378 C379 CU3535 GRM36B102K50PT C380 CU3535 GRM36B102K50PT C381 CU3535 GRM36B102K50PT C382 CS0439 TMCMA0J476MF C383 CU3535 GRM36B102K50PT C384 CU3535 GRM36B102K50PT C385 CU3535 GRM36B102K50PT C386 CU0119 GRM21BB30J106KE18L C387 CU3535 GRM36B102K50PT C388 CU3535 GRM36B102K50PT C389 CU3535 GRM36B102K50PT C390 CU3554 GRM36B104K10PT C391 CU3535 GRM36B102K50PT C392 CU3535 GRM36B102K50PT C393 CU0119 GRM21BB30J106KE18L C394 CU3512 GRM36CH120J50PT C395 CU3535 GRM36B102K50PT C396 CU3535 GRM36B102K50PT C397 CU3535 GRM36B102K50PT C398 CU3138 GRM188B31C225KE14D C399 C400 C401 CU3554 GRM36B104K10PT C403 CS0441 TMCMA0J226MTRF C404 CU3554 GRM36B104K10PT C413 CU3559 GRM155B30J105KE18D T, E, EUK C414 CU3554 GRM36B104K10PT C415 CU3554 GRM36B104K10PT CN101 CN102 D101 XD0422 HSC277TRF-E D103 XD0419 1SS400TE61 D104 D105 XD0421 1SV323(TPH3,H) D106 XD0422 HSC277TRF-E D107 XD0421 1SV323(TPH3,H) D108 XD0453 RB717F D109 D110 XD0451 015AZ3.0-X(TPL3,F) D111 D112 XD0422 HSC277TRF-E D113 XD0422 HSC277TRF-E D114 XD0421 1SV323(TPH3,H) D115 XD0421 1SV323(TPH3,H) D116 D117 XD0421 1SV323(TPH3,H) D118 XD0421 1SV323(TPH3,H) D119 XD0421 1SV323(TPH3,H) D120 XD0421 1SV323(TPH3,H) D121 XL0097 SML-521MUWT86 D122 XD0338 1SS362(TE85L) D123 XL0036 LED SML-310MT D124 XL0036 LED SML-310MT D125 XL0036 LED SML-310MT D126 XL0036 LED SML-310MT D127 XD0418 RB521S-30TE61 D128 XL0036 LED SML-310MT D129 XL0036 LED SML-310MT

Ref. No. Parts No. Parts name D130 XD0418 RB521S-30TE61 FL101 XF0059 Q21707AD27-21.7MHZ EUK FL101 XF0051 Q2175AD20 21.7MHZ T, E, TFH FL102 XF0059 Q21707AD27-21.7MHZ EUK FL102 XF0051 Q2175AD20 21.7MHZ T, E, TFH FL103 XC0052 ALFYM450G=K EUK FL103 XC0060 ALFYM450F=K T, E, TFH IC101 XA1103 LM2904PWR IC102 XA1107 MB15E07SRPFTGBNDEFE1 IC103 XA0404 TA31136FNG(EL) IC104 XA0210 IC NJM2070M IC105 XA1293 M62364FP#DF1G IC106 XA1119 XC6202P502MR IC107 XA0617 TC75S56FU(TE85) T, E, EUK IC108 XA1120 S80845CLNB-B66-T2G IC109 XA1117 S24CS64A01-J8T1G IC110 XA1106 LM2902PWR IC111 XA1106 LM2902PWR IC112 XA1106 LM2902PWR IC113 XA1358 UPD78F0395GC-8EA-A T, E, EUK IC113 XA1292 UPD78F0394GC-8EA-A TFH JK101 UJ0019 HSJ1493-01-010 JK102 UJ0022 HSJ1102-01-540 L101 QS401556 0.40-1.55-6TL L102 QS402006 0.40-2.0-6TL L104 QS402006 0.40-2.0-6TL L105 QS401405 0.40-1.4-5TL L106 QS501403 0.50-1.4-3TL L108 QC0812 1005 100NH L109 L110 QC0757 C1608CB22NJ L111 L112 QS402057 0.40-2.05-7TL L113 QC0875 C2012H68NH L114 QC0902 C2012C1R0J L115 QC0812 1005 100NH L116 QC0736 LK10052R2K-B L117 QB0057 MPZ1608S101AT L118 QS402057 0.40-2.05-7TL L120 QB0057 MPZ1608S101AT L121 QC0818 C2012H82NH L123 QC0736 LK10052R2K-B L124 QC0773 C1608CBR47J L125 QC0773 C1608CBR47J L126 QC0769 1608CBR22J L127 QC0765 1608 100NH L128 L129 QC0812 1005 100NH L130 L132 QC0842 LB2518T221K L133 QC0812 1005 100NH L134 QC0902 C2012C1R0J L135 QC0875 C2012H68NH L136 QC0875 C2012H68NH L137 QC0875 C2012H68NH L138 QC0875 C2012H68NH L139 QC0874 C2012H56NH L140 L141 QC0935 LB2012T150K L142 QB0057 MPZ1608S101AT L143 LCD101 EL0059 LCD DJ170 MIC101 EY0017 OB-27P44 Q101 XT0180 2SC5066FT-Y(TE85L) Q102 XE0090 SSM3J15FV(TPL3,Z)

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Ref. No. Parts No. Parts name Version Q104 XT0210 2SC6026MFV-GR Q105 XE0091 RQA0002DNS Q106 XE0092 RQA0004PXDQS Q107 Q108 XT0219 15GN03F-TL-E Q110 XU0211 RN2107FV Q111 XU0210 RN1107FV Q112 XT0219 15GN03F-TL-E Q113 XT0219 15GN03F-TL-E Q114 XT0213 2SC5659T2L Q115 XT0219 15GN03F-TL-E Q116 XT0219 15GN03F-TL-E Q117 XT0214 HN2C01FE-GR(T5L,F) Q118 XE0053 3SK293TE85L Q119 XE0053 3SK293TE85L Q120 XT0210 2SC6026MFV-GR Q121 XT0213 2SC5659T2L Q122 Q123 XU0220 RN2111MFV(TPL3) Q124 XT0223 2SA2070(TE12L,F) Q125 XU0211 RN2107FV T, E, EUK Q126 Q127 XU0220 RN2111MFV(TPL3) Q128 XT0214 HN2C01FE-GR(T5L,F) Q129 XU0210 RN1107FV Q130 XU0212 RN2115FV Q131 XU0210 RN1107FV Q132 XT0210 2SC6026MFV-GR Q133 XU0213 RN1111FV TPL3 Q134 XT0223 2SA2070(TE12L,F) Q135 XT0212 2SA1955FV-A(TPL3) Q136 XT0212 2SA1955FV-A(TPL3) Q137 XT0212 2SA1955FV-A(TPL3) Q138 XU0213 RN1111FV TPL3 Q139 XT0214 HN2C01FE-GR(T5L,F) Q140 XU0213 RN1111FV TPL3 Q142 XE0090 SSM3J15FV(TPL3,Z) R101 RK3562 1005 1/16W 100K OHMJ R104 RK3526 1005 1/16W 100 OHM J R105 RK3566 1005 1/16W 220K OHMJ R106 RK3501 1005 1/16W 0 OHM J R107 RK3534 1005 1/16W 470 OHM J R108 RK3550 1005 1/16W 10K OHM J R111 R112 RK3530 1005 1/16W 220 OHM J R113 RK3546 1005 1/16W 4.7K OHMJ R114 RK3538 1005 1/16W 1.0K OHMJ R116 RK3526 1005 1/16W 100 OHM J R117 RK3014 1608 1/10W 10 OHM J R118 RK3518 1005 1/16W 22 OHM J R119 RK3562 1005 1/16W 100K OHMJ R120 RK3530 1005 1/16W 220 OHM J R121 R122 RK3542 1005 1/16W 2.2K OHMJ R123 R124 RK3552 1005 1/16W 15K OHM J R126 R127 RK3557 1005 1/16W 39K OHM J R128 RK3562 1005 1/16W 100K OHMJ R130 RK3562 1005 1/16W 100K OHMJ R131 R132 RK3557 1005 1/16W 39K OHM J R133 RK3518 1005 1/16W 22 OHM J R134 RK3501 1005 1/16W 0 OHM J R135 RK3551 1005 1/16W 12K OHM J

RK3550 1005 1/16W 10K OHM J

RK3558 1005 1/16W 47K OHM J

Ref. No. Parts No. Parts name R136 RK3562 1005 1/16W 100K OHMJ R137 RK3551 1005 1/16W 12K OHM J R138 R141 R142 RK3530 1005 1/16W 220 OHM J R143 RK3550 1005 1/16W 10K OHM J R144 RK3526 1005 1/16W 100 OHM J R145 RK3532 1005 1/16W 330 OHM J R146 RK3550 1005 1/16W 10K OHM J R147 RK3501 1005 1/16W 0 OHM J R148 R149 RK3552 1005 1/16W 15K OHM J R150 RK3554 1005 1/16W 22K OHM J R151 RK3537 1005 1/16W 820 OHM J R152 R153 RK3550 1005 1/16W 10K OHM J R154 RK3570 1005 1/16W 470K OHMJ R155 RK3552 1005 1/16W 15K OHM J R156 RK3562 1005 1/16W 100K OHMJ R157 RK3546 1005 1/16W 4.7K OHMJ R158 RK3570 1005 1/16W 470K OHMJ R159 RK3538 1005 1/16W 1.0K OHMJ R160 R162 RK3538 1005 1/16W 1.0K OHMJ R163 RK3542 1005 1/16W 2.2K OHMJ R164 RK3550 1005 1/16W 10K OHM J R165 RK3501 1005 1/16W 0 OHM J R166 RK3537 1005 1/16W 820 OHM J R167 RK3539 1005 1/16W 1.2K OHMJ R168 RK3558 1005 1/16W 47K OHM J R169 R170 RK3530 1005 1/16W 220 OHM J R171 RK3564 1005 1/16W 150K OHMJ R172 RK3570 1005 1/16W 470K OHMJ R173 RK3550 1005 1/16W 10K OHM J R174 RK3526 1005 1/16W 100 OHM J R175 R176 RK3530 1005 1/16W 220 OHM J R177 RK3530 1005 1/16W 220 OHM J R178 RK3570 1005 1/16W 470K OHMJ R179 RK3550 1005 1/16W 10K OHM J R180 RK3538 1005 1/16W 1.0K OHMJ R181 RK3518 1005 1/16W 22 OHM J R183 RK3538 1005 1/16W 1.0K OHMJ R184 RK3550 1005 1/16W 10K OHM J R185 RK3574 1005 1/16W 1.0M OHMJ R186 RK3538 1005 1/16W 1.0K OHMJ R187 RK3542 1005 1/16W 2.2K OHMJ R188 RK3522 1005 1/16W 47 OHM J R189 RK3550 1005 1/16W 10K OHM J R190 RK3556 1005 1/16W 33K OHM J R191 RK3562 1005 1/16W 100K OHMJ R192 RK3574 1005 1/16W 1.0M OHMJ R193 RK3562 1005 1/16W 100K OHMJ R194 RK3562 1005 1/16W 100K OHMJ R195 RK3560 1005 1/16W 6 8 K OHM J R196 RK3566 1005 1/16W 220K OHMJ R198 RK3550 1005 1/16W 10K OHM J R199 RK3570 1005 1/16W 470K OHMJ R200 RK3550 1005 1/16W 10K OHM J R201 RK3550 1005 1/16W 10K OHM J R202 RK3558 1005 1/16W 47K OHM J R203 RK3562 1005 1/16W 100K OHMJ R204 RK3570 1005 1/16W 470K OHMJ R205 RK3542 1005 1/16W 2.2K OHMJ

Page 12

Ref. No. Parts No. Parts name Version R206 RK3536 1005 1/16W 680 OHM J EUK R206 RK3539 1005 1/16W 1.2K OHMJ T, E, TFH R207 RK3536 1005 1/16W 680 OHM J EUK R207 RK3539 1005 1/16W 1.2K OHMJ T, E, TFH R208 RK3550 1005 1/16W 10K OHM J R209 RK3556 1005 1/16W 33K OHM J R210 RK3538 1005 1/16W 1.0K OHMJ R211 RK3550 1005 1/16W 10K OHM J R212 RK3518 1005 1/16W 22 OHM J R213 RK3550 1005 1/16W 10K OHM J R214 RK3518 1005 1/16W 22 OHM J R215 RK3574 1005 1/16W 1.0M OHMJ R216 RK3574 1005 1/16W 1.0M OHMJ R217 RK3574 1005 1/16W 1.0M OHMJ R218 R219 RK3550 1005 1/16W 10K OHM J R220 RK3574 1005 1/16W 1.0M OHMJ R221 RK3574 1005 1/16W 1.0M OHMJ R222 RK3564 1005 1/16W 150K OHMJ R223 R225 RK3550 1005 1/16W 10K OHM J T, E, TFH R225 RK3547 1005 1/16W 5.6K OHMJ EUK R226 RK3550 1005 1/16W 10K OHM J R227 RK3564 1005 1/16W 150K OHMJ R228 RK3554 1005 1/16W 22K OHM J R229 RK3544 1005 1/16W 3.3K OHMJ R230 RK3501 1005 1/16W 0 OHM J R231 RK3514 1005 1/16W 10 OHM J R233 RK3536 1005 1/16W 680 OHM J R234 RK3532 1005 1/16W 330 OHM J R235 RK3562 1005 1/16W 100K OHMJ R237 RK3570 1005 1/16W 470K OHMJ R239 RK3574 1005 1/16W 1.0M OHMJ R240 RK3562 1005 1/16W 100K OHMJ T, E, EUK R241 RK3550 1005 1/16W 10K OHM J T, E, EUK R242 RK3566 1005 1/16W 220K OHMJ R243 RK3566 1005 1/16W 220K OHMJ R244 RK3550 1005 1/16W 10K OHM J T, E, EUK R245 RK3553 1005 1/16W 18K OHM J R246 RK3550 1005 1/16W 10K OHM J R247 RK3574 1005 1/16W 1.0M OHMJ R248 RK3550 1005 1/16W 10K OHM J R249 RK3550 1005 1/16W 10K OHM J R250 RK3550 1005 1/16W 10K OHM J R251 RK3546 1005 1/16W 4.7K OHMJ R252 RK3526 1005 1/16W 100 OHM J T, E, EUK R253 RK3550 1005 1/16W 10K OHM J T, E, EUK R254 RK3553 1005 1/16W 18K OHM J R255 RK3566 1005 1/16W 220K OHMJ R256 RK3562 1005 1/16W 100K OHMJ R257 RK1018 3216 1/8 W 100 OHM J R258 RK3566 1005 1/16W 220K OHMJ R259 RK3501 1005 1/16W 0 OHM J T, E, EUK R260 RK3562 1005 1/16W 100K OHMJ T, E, EUK R261 R262 RK3542 1005 1/16W 2.2K OHMJ R263 RK3554 1005 1/16W 22K OHM J R265 RK3550 1005 1/16W 10K OHM J R266 RK3574 1005 1/16W 1.0M OHMJ R267 RK3538 1005 1/16W 1.0K OHMJ R268 RK3562 1005 1/16W 100K OHMJ R269 RK3558 1005 1/16W 47K OHM J R270 RK3550 1005 1/16W 10K OHM J R271 RK3538 1005 1/16W 1.0K OHMJ R273 RK3560 1005 1/16W 6 8 K OHM J

Ref. No. Parts No. Parts name R276 RK3552 1005 1/16W 15K OHM J R277 RK3552 1005 1/16W 15K OHM J R278 RK3550 1005 1/16W 10K OHM J R279 RK3514 1005 1/16W 10 OHM J R280 RK3562 1005 1/16W 100K OHMJ R281 RK3562 1005 1/16W 100K OHMJ R282 RK3538 1005 1/16W 1.0K OHMJ R283 RK3550 1005 1/16W 10K OHM J R284 RK3550 1005 1/16W 10K OHM J R285 RK3562 1005 1/16W 100K OHMJ R286 RK3562 1005 1/16W 100K OHMJ R287 RK3550 1005 1/16W 10K OHM J R288 RK3560 1005 1/16W 6 8 K OHM J R289 RK3558 1005 1/16W 47K OHM J R290 RK3566 1005 1/16W 220K OHMJ R291 RK3558 1005 1/16W 47K OHM J R292 RK3562 1005 1/16W 100K OHMJ R293 RK3562 1005 1/16W 100K OHMJ R294 RK3562 1005 1/16W 100K OHMJ R295 RK3562 1005 1/16W 100K OHMJ R297 RK3550 1005 1/16W 10K OHM J R298 RK3554 1005 1/16W 22K OHM J R299 RK3554 1005 1/16W 22K OHM J R300 RK3556 1005 1/16W 33K OHM J R301 RK3550 1005 1/16W 10K OHM J R302 RK3554 1005 1/16W 22K OHM J R303 RK3559 1005 1/16W 56K OHM J R304 RK3550 1005 1/16W 10K OHM J R305 RK3568 1005 1/16W 330K OHMJ R306 RK3536 1005 1/16W 680 OHM J R307 RK3562 1005 1/16W 100K OHMJ R308 RK3550 1005 1/16W 10K OHM J R309 RK3550 1005 1/16W 10K OHM J R310 RK3546 1005 1/16W 4.7K OHMJ R311 RK3550 1005 1/16W 10K OHM J R312 RK3550 1005 1/16W 10K OHM J R313 RK3559 1005 1/16W 56K OHM J R314 RK3559 1005 1/16W 56K OHM J R316 RK3550 1005 1/16W 10K OHM J R317 RK3570 1005 1/16W 470K OHMJ R318 RK3546 1005 1/16W 4.7K OHMJ R319 RK3559 1005 1/16W 56K OHM J R320 RK3562 1005 1/16W 100K OHMJ R321 R324 RK3558 1005 1/16W 47K OHM J R325 RK3558 1005 1/16W 47K OHM J R326 RK3562 1005 1/16W 100K OHMJ R327 RK3566 1005 1/16W 220K OHMJ R328 RK3559 1005 1/16W 56K OHM J R329 RK3556 1005 1/16W 33K OHM J TFH R329 RK3557 1005 1/16W 39K OHM J T, E, EUK R330 RK3550 1005 1/16W 10K OHM J TFH R330 RK3551 1005 1/16W 12K OHM J T, E, EUK R331 RK3550 1005 1/16W 10K OHM J R333 RK3546 1005 1/16W 4.7K OHMJ R334 RK3546 1005 1/16W 4.7K OHMJ R335 RK3546 1005 1/16W 4.7K OHMJ R336 RK3546 1005 1/16W 4.7K OHMJ R337 RK3558 1005 1/16W 47K OHM J R338 RK3558 1005 1/16W 47K OHM J R339 R340 RK3552 1005 1/16W 15K OHM J R341 RK3562 1005 1/16W 100K OHMJ R342 RK3537 1005 1/16W 820 OHM J R343 RK3550 1005 1/16W 10K OHM J

Page 13

Ref. No. Parts No. Parts name Version R344 RK3537 1005 1/16W 820 OHM J R345 RK3546 1005 1/16W 4.7K OHMJ R346 RK3562 1005 1/16W 100K OHMJ R347 RK3562 1005 1/16W 100K OHMJ R348 RK3562 1005 1/16W 100K OHMJ R349 RK3550 1005 1/16W 10K OHM J R350 RK3550 1005 1/16W 10K OHM J R351 RK3542 1005 1/16W 2.2K OHMJ R352 RK3550 1005 1/16W 10K OHM J R353 RK3538 1005 1/16W 1.0K OHMJ R354 RK3550 1005 1/16W 10K OHM J R355 RK3538 1005 1/16W 1.0K OHMJ R356 RK3536 1005 1/16W 680 OHM J R357 RK3550 1005 1/16W 10K OHM J R358 RK3538 1005 1/16W 1.0K OHMJ R359 RK3566 1005 1/16W 220K OHMJ R360 RK3562 1005 1/16W 100K OHMJ R361 RK3554 1005 1/16W 22K OHM J R362 R363 R363 RK3538 1005 1/16W 1.0K OHMJ TFH R363 RK3564 1005 1/16W 150K OHMJ E, EUK R365 RK3534 1005 1/16W 470 OHM J R366 RK3501 1005 1/16W 0 OHM J R367 RK3501 1005 1/16W 0 OHM J R368 RK3546 1005 1/16W 4.7K OHMJ R369 RK3538 1005 1/16W 1.0K OHMJ R370 RK3550 1005 1/16W 10K OHM J R371 RK3562 1005 1/16W 100K OHMJ R372 RK3560 1005 1/16W R372 RK3554 1005 1/16W 22K OHM J TFH R373 RK3574 1005 1/16W 1.0M OHMJ R374 RK3558 1005 1/16W 47K OHM J R375 RK3562 1005 1/16W 100K OHMJ R376 R377 RK3558 1005 1/16W 47K OHM J R378 RK3558 1005 1/16W 47K OHM J

SW101 UU0043 EVQPJ705K TH101 W101 MRCL07AA #30R02-070-02 W102 MACL07AA #30A02-070-02 W103 MACLH2GG #30AH1-025-H1 T, E X102 XQ0208 DSX321SC21.250MHZ X103 XK0005 CDBCB450KCAY24-R0 X104 XQ0212 SMD-49 8.192MHZ

UP0619A DJ175INTEGRATED-A AF0003 0PH M2+3 FE/N3 AF0030 0PH2+6FE/N1 AN0034 M6 NUT BR/B.N AN0042 DIAL NUT AX0009 OPH P2+6 FE/N 1

DG0046 LCD LIGHT DJ170

DP0195 LCD PANEL

ES0027 36-8BB-10B2 ROHS

FG0234Y MIC HOLDER DJ190

FG0392 WATERPROOF CAP

FG0418 LCD RUB CONE

FG0478 KEYBOAD

FG0479 PTT RUBBER

FG0480 JACK CAP

FM0265A HEAT SINK, DJV17

FM0300 ANT GND DJ175

FP0310 TERMINAL CASE

FP0321 SPACER

FP0324 BLIND SHEET DJ175

6 8K OHM J T, E, EUK

Ref. No. Parts No. Parts name

KZ0219 FRONT CASE ASSYDJ175 NK0081 KNOB SD0111A BATTERY TERMINAL SD0137 TERMINAL SP0013 KNOB SPRING 7800 SS0112 CHASSIS ST0089 LCD HOLDER TL0033 REFLECTIVE SHEET TS0188 VCO CASE DJ175 UE0571 SMA ANT CONNECTOR UR0027 ROTARY ENCODER

YX0045 LCD TAPE

CHARGER UNIT (EDC-165)

Ref. No. Parts No. Parts name D101 XL0125 MVR3338S JK101 UJ0033 HEC2781-010520 R101 RF0027 SPR3 56 OHM R102 RK3038 1608 1/10W 1.0KOHM J R103

UP0613 EDC165 INTEGRATED AP0017 PH P2.6+10 FE/B.ZN DD0017 BLIND SHEET KS0103 BOTTOM CASE EDC165 KU0162 UPPER CASE EDC164 SP0020 CHARGE TERMINAL TT1002 1.0X1MM

ACCESSORIES

BB0009Y HAND STRAP DJS41 BH0011 BELT CLIP DS0446 NITTO MODEL PLATE(S) EA0141 ANTENNA EA0141 T, E, EUK EA0142 ANTENNA EA0142 TFH EDC146 AC ADAPTOR 120 V T EDC147 AC ADAPTOR 230V T, E, EUK EDC148 AC ADAPTOR 230V UK PLUG EUK EBP072 NI-MH BATTERY PACK

Page 14

EXPLODED VIEW

DP0195

KZ0219

FG0392

NK0081

FG0480 FG0479 ES0027

Page 15

ST0089

Page 16

PC Board View

MAIN - Side A

Page 17

PC Board View

MAIN - Side B

Page 18

PC Board View EDC165

Side-A

T103 T101 T102

o o

O o

Side-B

C D C D

o o

R102

R103

Page 19

Adjustments:

1) Required Test Equipment

The following items are required to adjust radio parameters

1.Regulated power supply

2.Digital multim eter

3.Oscilloscope

4.Audio dummy load

5.SSG

6.Power meter

Supply voltage: Current:

Voltage range: Current: Input resistance:

Measurable frequency: Audio frequency

Impedance: Dissipation: Jack:

Output frequency: Impedance: Modulation:

7 - 8 DC

3A or more

FS = Approx. 20V

10A or more

High impedance

1W or more

3.5mmO

200MHz or more

50 Q, unbalanced

7.Audio volmeter

.Audio generator

9.Distortion meter/SINAD meter

10.Frequency counter

Measurable frequency: Impedance: Measuring range:

Measurable frequency: Sensitivity:

Output frequency: Output impedance:

Measurable frequency: Input level: Distortion:

Measurable frequency: Measurable stability:

Up to 200MHz

50 Q, unbalanced

0.1W-10W

Up to 100kHz

1mV to 10V

67Hz to 10kHz

600 Q, unbalanced

1kHz

Up to 40dB

1%-100%

Up to 200MHz

Approx. ±0.1ppm

Page 20

11.Linear detector

12. DC Ammeter

Measurable frequency: Up to 200MHz Characteristics: Flat CN: 60dB or more

Current: 3A or more

Note:

(1). SSG initial setting

Modulation Frequency:1kHz

Modulation Level:3.0kHz (T, E, TFH)/ 1.5kHz (EUK) (2). Reference sensitivity: 12dB SINAD (3). Specified audio output level: 500mW at 8Q (4). Standard audio output level: 50mW at 8Q (5). Use an RF cable ( 3D2W:1M ) for test equipment. (6). Attach a fuse to the RF test equipment. (7). All SSG outputs are indicated by EMF (8). Supply voltage for the transceiver: 7.2VDC

Page 21

2) Adjustment mode

The adjustm ent should be operated in the Adjustment mode. Therefore except for the reference frequency, deviation and tone-deviation adjustments an operator won’t touch the components on the board, but most of the adjustments should be done by operating the dial and keys on the unit. During such operation, memory channels are used temporary therefore it is required to program memories before the unit is set to the adjustm ent mod. Please refer the chart below for the programming channels. The frequencies may be varied within the range of ±0.2M hz depending on the RF environm ent around your work area, and refer the instruction m anual for how to program the memories into the memory-channels.

To enter the adjustm ent mode, press “F” then “KL” to key-lock the unit. Then press the numeric keys in order of ”4”, “9”, “0”, “2”, “1” and “7”. Observe th at decimal points appear on the display below 100MHz and 10MHz digits. To exit from the adjustm ent mode, repeat the whole sequence (key-lock then enter the code in order). NEVER RESET THE UNIT WHILE OPERATING IN THE SET MODE. This may reset whole adjustm ent values resulting the malfunction of the unit in the operating mode. The chart below shows the adjustm ent points and interface between the unit and instrum ents. Please use an attenuator in case the specifications of the linear-detector and frequency counter may exceed the requirem ent herein.

* Simply memory the frequencies only into the relative memory channels.

Channe

l 1 Frequnecy Adjustment 145.000 2 TX-output / High power 145.000

3 TX-output / Mid power 145.000 4 TX-output / Low power 145.000 5 Microphone deviation 145.000 6 CTCSS tone deviation 145.000 7 DCS deviation 145.000

11 Sensitivity adjustment (lower edge) 137.000 12 Sensitivity adjustment (center range) 150.000 13 Sensitivity adjustment (upper range) 173.000 14 Squelch adjustment (minimum) 145.000 15 Squelch adjustment (maximum) 145.000 16 S-meter adjustment (1) 145.000 17 S-meter adjustment (Full) 145.000

Adjustment menu

Frequency

T, E, EUK TFH

162.000

137.000

150.000

173.000

162.000

Page 22

1. Frequency adjustm ent Select memory ch.1. Press PTT on the unit to transmit and m easure the TX frequency. One of digits 00-FF

should appear on the display where memory channel number was shown. Rotate the dial

on the unit to adjust the frequency to bring the value to the range specified below.

Specification value : ± 50Hz

Necessary instrum ent: (1). Frequency counter

2. TX output - High power Select memory ch.2. Press PTT on the unit to transm it. One of digits 00-FF should appear on the display where memory channel num ber was shown. Rotate the dial on the unit to adjust the TX power to meet the specification. Release the PTT to finish the adjustment. Be sure to check the consuming current value after the adjustm ent is completed.

Specification:

TX-output power/High: 5.0 watts Current consumption / 1.6A or less

Necessary instrum ent: (1). DC Ammeter

(2). Power meter

3. TX output - Middle power Select memory ch.3. Press PTT on the unit to transmit. One of digits 00-FF should appear on the display where memory channel num ber was shown. Rotate the dial on the unit to adjust the TX power to m eet the specification. Release the PTT to finish the adjustment.

Specification: 2.0 watts

Necessary instrum ent: (1). Power meter

4. TX output - Low power Select memory ch.4. Press PTT on the unit to transm it. One of digits 0-F should appear on the display where memory channel number was shown. Rotate the dial on the unit to adjust the TX power to meet the specification. Release the PTT to finish the adjustment.

Specification: 0.5 watts

Necessary instrument: (1). Power meter

Page 23

5. Microphone deviation Select memory ch.5. Input the signal as specified below from an Audio generator and transm it. Measure the deviation value using a Liner-detector. Press PTT on the unit to transmit. One of digits 00-FF should appear on the display where memory channel number was shown. Rotate the dial on the unit to adjust the deviation to meet the specification. Release the PTT to finish the adjustment.

Specification : 4.3±0.1kHz (T, E, TFH)

2.2 ± 0.1kHz (EUK)

Measuring condition:(1). Audio generator setting

Frequency: 1kHz Output Level:50mV

Necessary instrument:(1). Audio generator

(2). Linear detector

6. CTCSS tone 88.5Hz deviation and adjustm ent of the sign-wave Select memory ch.6. Press PTT to automatically transm it 88.5Hz tone. Measure the deviation value using a Liner-detector. Press PTT on the unit to transm it. One of digits 00-FF should appear on the display where memory channel num ber was shown. Rotate the dial on the unit to adjust the tone deviation to meet the specification below. Use an oscilloscope to monitor the sign-wave then correct the wave shape (see the chart 1 below).

Specification: 0.80±0.05KHz (T, E)

0.90±0.05KHz (TFH)

0.50±0.05KHz (EUK)

Necessary instrument:(1). Linear detector

(2). Oscilloscope

Chart 1: sign-wave correction

7. DCS 255 deviation Select memory ch.7. Press PTT to autom atically transm it DCS code of 255. Measure the deviation value using

a Liner-detector. Press PTT on the unit to transmit. One of digits 00-FF should appear on the display where memory channel num ber was shown. Rotate the dial on the unit to adjust the tone deviation to meet the specification below.

Specification: 0.80±0.05KHz (T, E, TFH)

0.50±0.05KHz (EUK)

Necessary instrument:(1). Linear detector

Page 24

8. Receiver sensitivity adjustm ent

Preparation: Set the speaker audio output level to 50mW. Operation: There are three points to be adjusted, the lower, central, and upper edges of

the receiver’s covering range. Set the memory channels accordingly. Input an RF signal from the SSG to the antenna connector then measure output signal at the speaker jack using a SINAD meter. Press “F”(FUNC) key on the unit. One of digits 00-FF should appear on the display where memory channel number was shown. Rotate the dial on the unit to bring the SINAD value to

12dB or better.

a. Lower edge

Condition:(1). Memory Channel: 11

(2). SSG setting

Frequency: 137.000MHz RF Output Level: -7.0dB i Modulation Frequency:1kHz Modulation Level:3.0kHz (T, E, TFH)/ 1.5KHz (EUK)

b. Center range

Condition:(1). Memory Channel: 12

(2). SSG setting

Frequency: 150.000MHz RF Output Level: -8.0dB i Modulation Frequency:1kHz Modulation Level:3.0kHz (T, E, TFH)/ 1.5KHz (EUK)

a. U pper edge

Condition:(1). Memory Channel: 13

(2). SSG setting

Frequency: 173.000MHz RF Output Level: -8.0dB i Modulation Frequency:1kHz Modulation Level:3.0kHz (T, E, TFH)/ 1.5KHz (EUK)

Necessary instrum ents:(1). Audio volmeter

(2). SSG (3). SINAD Meter

(4). Audio dummy load Note: Press “FUNC” key or leave the unit for 5 seconds to enter the new values and go to the next adjustment procedure. Memory number should appear on the display when the unit exits the sensitivity adjustment.

Page 25

9. Squelch adjustments: Select the memory channel num ber accordingly to adjust the level Min and Max. Input an RF signal to the antenna connector from SSG then press FUNC key on the unit. A beep (“pip” ) sounds and completes the adjustment.

a. Squelch level (Min.)

Condition:(1). Memory Channel:14

(2). SSG setting

Frequency: 145.000MHz (T, E, EUK)/ 162.000MHz (TFH) RF Output Level: -11dB i Modulation Frequency:1kHz Modulation Level:3.0kHz (T, E, TFH)/ 1.5KHz (EUK)

b. Squelch level (Max.)

Condition:(1). Memory Channel: 15

(2). SSG setting

Frequency: 145.000MHz (T, E, EUK)/ 162.000MHz (TFH) RF Output Level:0dB i Modulation Frequency:1kHz Modulation Level:3.0kHz (T, E, TFH)/ 1.5KHz (EUK)

Necessary instrum ent:(1). SSG

10. S-meter adjustm ents Select the memory channel num ber accordingly to adjust the S-meter level 1 and full. Input an RF signal to the antenna connector from SSG then press FUNC key on the unit. A beep (“pip” ) sounds and completes the adjustment.

a. S-meter level 1

Condition:(1). Memory Channel: 16

(2). SSG setting

Frequency: 145.000MHz (T, E, EUK)/ 162.000MHz (TFH) RF Output Level:-5dB i Modulation Frequency:1kHz Modulation Level:3.0kHz (T, E, TFH)/ 1.5KHz (EUK)

b. S-meter level Full

Condition:(1). Memory Channel: 17

(2). SSG setting

Frequency: 145.000MHz (T, E, EUK)/ 162.000MHz (TFH) RF Output Level:15dB i Modulation Frequency:1kHz Modulation Level:3.0kHz (T, E, TFH)/ 1.5KHz (EUK)

Necessary instrum ent:(1). SSG

Page 26

C399

>006666

C130 C209 C263 FL101/FL102 FL103 R206 R207 R225 R330 R372 R363 W103 IC107 Q125 C305 C312 C413 R240 R241 R244 R252 R253 R259 R260 R329 IC113

T 18p 22p E 18p 22p TFH NC 18p EUK 18p 22p 15p 21.7M-N ALFYM450G 680 680 5.6k 12k 68k 150k NC

21.7M-W ALFYM450F 1.2k 1.2k 10k 12k 68k NC MACLH2GG TC75S56FU RN2107MFV 2 2/16V 0.1 1 100k 10k 10k 100 10k 0 100k 39k uPD78F0395GC

21.7M-W ALFYM450F 1.2k 1.2k 10k 12k 68k 150k MACLH2GG TC75S56FU RN2107MFV 2 2/16V 0.1 1 100k 10k 10k 100 10k 0 100k 39k uPD78F0395G C

21.7M-W ALFYM450F 1.2k 1.2k 10k 10k 22k 1k NC NC NC NC NC NC NC NC NC NC NC NC NC 33k uPD78F0394GC

TC75S56FU

RN2107MFV

0.1 1 100k 10k 10k 100 10k 0 100k 39k uPD 78F0395GC

2 2/16V

Schematic diagram DJ-175

Page 27

Page 28

Schematic Diagram EDC-165

Page 29

Q113

15GN03F

BUFFER

Q116

2SC5066FT

BPF

D117 1SV323 D118 1SV323 D119 1SV323

BUFFER

15GN03F

Q112

15GN03F

Q108

15GN03F

Q118

3SK293

Q115

VCO-TX

« -

\2 1 .7 M H z/

D114 1SV323 D115 1SV323

D105 1SV323 D107 1SV323

MODULATION

D106 HSC277

FL101 FL102

<F1_

LOOP FILTER

LPF ANT SW BPF RF AMP 1st MIXER AF AMP AUD IO AM P

APC DET PLL IC

D108

RB717F

APC AMP

IC101

LM2904PWM

D101 HSC277 D112 HSC277

«-»

D113 HSC277

POWERA MP PRI-DRIV ER BUFFER AMP

Q105

RQA0002

D120 1SV323

Q106

RQA0004

Q101

2SC5066

Q119

3SK293

Q121

2SC5659

CERAMIC FILTER DISCRIM INATOR

FL103

\ 450KHz /

IF DETECTOR

Q114

2SC5659

IC103

TA31136 FN

LM2902PW R

IC111

2SC6026MFV

IC102

MB15E07SL

STBSTB CLK

DATA

C-

X102

21.25MHz

D/A CONVERTER (POTENTIO METER)

IC105

M62364FP

Q120

ACTIVE FILTER (HPF)

Q117

HN2C01 FE

n >

LDDA

CLK

DATA

SSM3J15FV

Q142

CLONE

« D127 RB521S-30

IC104

NJM207 0M

SW-AU DIO

Q124 2SA2070

Q128 HN2C01FE

AFP

SPEAKER

SPEAKER JACK

MIC JACK

< i - RECEIVE

RECEIVE/T RANSMIT

CPU CONTROL

TX/ RX LED

SML521MUW

D121

RN2111MFV

ROTARY ENCODER

KEY INPUT

□ 0

0 0 0 0

0 0

LCD

BACK LIGHT

D123 SML310MT D124 SML310MT D125 SML310MT D126 SML310MT D128 SML310MT D129 SML310MT

SD SW

Q123

0 0

< H

LAMP SW

Q133 RN1111MFV Q138 RN1111MFV Q140 RN1111MFV

EEP ROM

IC109

S24CS64A01

_ v

CPU

ACTIVE FILTER (LPF)

IC112 1/4

LM2902PWR

TONE (67 -250 .3Hz)/ DCS (023-754)

XTAL OSC CLOCK SHIFT

X104

8.192MHz

RESET

IC108

S80845CLNB

5V REGULATOR

IC106

XC6202P502M

BAT

Q132

2SC6026MFV

Q127

RN2111MFV

ACTIV E FILTER (LPF)

IC112 2/4

LM2902PWR

C5V

P5V

IDC/ SPLATTER FILTER

SW- PLL C5V SW

Q137

2SA1955FV

P5CP5C

SW-RX

Q135

2SA1955FV

R5CR5C

SW-TX

Q136

2SA1955FV

2SA2070

HN2C01 FE

Q122

RN1107MFV

PTT-SW

Q130

RN2115MFV

Q134

Q139

C5C

Block Diagram DJ-175

FUNC

BATTERY 7.2V

Alinco DJ-175 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual