Specifications

Circuit Description

Parts List

Exploded View

PC Board View

Adjustment

Schematic Diagram

Block Diagram

ALINCO, INC.

Service Manual DJ-175

SPECIFICATIONS DJ-175 <GRNERAL>

T:

E:

TFH:

TX 144 ~ 147.995MHz RX 136 ~ 173.995MHz TX 144 ~ 145.995MHz RX 144 ~ 145.995MHz TX 136 ~ 173.995MHz RX 136 ~ 173.995MHz

*144 ~ 147.995MHz *144 ~ 147.995MHz *144 ~ 145.995MHz *144 ~ 145.995MHz *150 ~ 173.995MHz *150 ~ 173.995MHz

Frequency range:

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):

* Guaranteed range per specifications F3E (FM), F2D* *T/E models only 5, 10, 12.5, 20, 25 & 30KHz 200 channels + 1 CALL channel + 1 Repeater-Access function memory 50Ω 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

<TRANSMITTER> Output power (Approx.): Modulation Max. deviation

Spurious emission

5W (High)/ 2W (Middle)/ 0.5W (Low) Variable reactance frequency modulation ±5KHz (±2.5KHz)** –60dB or less

<RECEIVER> Receive system Intermediate frequencies Sensitivity (12dB SINAD) Selectivity

Audio output power

Double conversion superheterodyne 1st: 21.7MHz / 2nd: 450KHz -14dBµ (0.2µV) -6dB: 12KHz or more/ -60dB: 26KHz or less (-6dB: 6KHz or more/ -60dB: 14KHz or less)** 500mW (8Ω, MAX) 400mW (8Ω, 10% THD)

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

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.

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.

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.

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.

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.

Ref. No. Parts No. Parts name Version Ref. No. Parts No. Parts nameC101 CU3535 GRM36B102K50PT C173C102 CU3535 GRM36B102K50PT C174C103 CU3519 GRM36CH470J50PT C175C104 CU3535 GRM36B102K50PT C176 CU3502 GRM36CK010C50PTC105 C177 CU3535 GRM36B102K50PTC108 CU3535 GRM36B102K50PT C178 CU3513 GRM36CH150J50PTC109 CU3512 GRM36CH120J50PT C179 CU3535 GRM36B102K50PTC110 CU3505 GRM36CH040C50PT C180 CU3515 GRM36CH220J50PTC111 CU3535 GRM36B102K50PT C181 CU0119 GRM21BB30J106KE18LC112 CU3520 GRM1552C1H560JD01D C182 CU3554 GRM36B104K10PTC113 CU3535 GRM36B102K50PT C183 CU3535 GRM36B102K50PTC114 CU3503 GRM36CK020C50PT C184 CU3547 GRM36B103K16PTC115 C185 CU3535 GRM36B102K50PTC116 CU3512 GRM36CH120J50PT C186C117 CU3513 GRM36CH150J50PT C187 CU3513 GRM36CH150J50PTC118 CU3513 GRM36CH150J50PT C188 CU3508 1005 CH 50V 7PF DC119 CU3513 GRM36CH150J50PT C189 CU3535 GRM36B102K50PTC120 C190C122 CU3559 GRM155B30J105KE18D C191 CU3137 GRM188B31C105KA92DC123 C192 CU3535 GRM36B102K50PTC124 CU3512 GRM36CH120J50PT C193 CU3514 GRM36CH180J50PTC125 CU3512 GRM36CH120J50PT C194 CU3554 GRM36B104K10PTC126 CU3513 GRM36CH150J50PT C195 CU3535 GRM36B102K50PTC127 CU3514 GRM36CH180J50PT C196 CU3502 GRM36CK010C50PTC129 CU3512 GRM36CH120J50PT C197 CU3527 GRM1552C1E221JD01DC130 CU3514 GRM36CH180J50PT T, E, EUK C198 CU3554 GRM36B104K10PTC131 CU3517 GRM36CH330J50PT C199 CU3515 GRM36CH220J50PTC132 CU3516 GRM36CH270J50PT C200 CU3554 GRM36B104K10PTC133 CU3517 GRM36CH330J50PT C201 CU3535 GRM36B102K50PTC134 CU3513 GRM36CH150J50PT C202 CU3547 GRM36B103K16PTC135 CU3513 GRM36CH150J50PT C203 CU3535 GRM36B102K50PTC136 CU3513 GRM36CH150J50PT C204 CU3535 GRM36B102K50PTC137 CU3535 GRM36B102K50PT C205 CS0396 20V 0.1UFC138 C206 CS0396 20V 0.1UFC139 C207 CU3547 GRM36B103K16PTC140 CU3554 GRM36B104K10PT C209 CU3515 GRM36CH220J50PT T, E, EUKC141 CU3535 GRM36B102K50PT C209 CU3514 GRM36CH180J50PT TFHC142 CU3502 GRM36CK010C50PT C210 CU3505 GRM36CH040C50PTC144 C211 CU3526 GRM1552C1E181JD01DC145 CU3535 GRM36B102K50PT C212 CU3528 GRM1552C1E271JD01DC146 CU3535 GRM36B102K50PT C213 CU3526 GRM1552C1E181JD01DC147 CU3506 GRM36CH050C50PT C214 CU3535 GRM36B102K50PTC149 CU3502 GRM36CK010C50PT C215 CU3554 GRM36B104K10PTC150 CU3502 GRM36CK010C50PT C216C151 CU3547 GRM36B103K16PT C219 CS0398 6.3V 2.2UFC152 CU3535 GRM36B102K50PT C220 CU3535 GRM36B102K50PTC153 C221 CU3535 GRM36B102K50PTC155 CU3535 GRM36B102K50PT C222 CU3535 GRM36B102K50PTC156 C223C157 CU3535 GRM36B102K50PT C224 CU3547 GRM36B103K16PTC158 CU3535 GRM36B102K50PT C225 CU3535 GRM36B102K50PTC159 CU3547 GRM36B103K16PT C226 CU3535 GRM36B102K50PTC160 CU3535 GRM36B102K50PT C227 CU3535 GRM36B102K50PTC161 CU3535 GRM36B102K50PT C228 CU3515 GRM36CH220J50PTC162 C229 CU3515 GRM36CH220J50PTC163 CU3535 GRM36B102K50PT C230 CU3512 GRM36CH120J50PTC164 CS0441 TMCMA0J226MTRF C231 CU0119 GRM21BB30J106KE18LC165 CU3535 GRM36B102K50PT C232 CU3535 GRM36B102K50PTC166 CU3513 GRM36CH150J50PT C233 CU3522 GRM1552C1H820JD01DC167 CU3523 GRM1552C1H101JZ01D C234 CU3547 GRM36B103K16PTC168 CU3502 GRM36CK010C50PT C235 CU3519 GRM36CH470J50PTC169 CU3502 GRM36CK010C50PT C236 CU3535 GRM36B102K50PTC171 CU3511 GRM36CH100D50PT C237 CU3547 GRM36B103K16PTC172 CU3535 GRM36B102K50PT C238 CU3539 GRM36B222K50PT

MAIN UNITParts List

Ref. No. Parts No. Parts name Version Ref. No. Parts No. Parts nameC239 CU3547 GRM36B103K16PT C305 CU3138 GRM188B31C225KE14D T, E, EUKC240 CU3535 GRM36B102K50PT C306 CU3559 GRM155B30J105KE18DC241 CU3539 GRM36B222K50PT C307 CU3535 GRM36B102K50PTC242 CU3535 GRM36B102K50PT C308 CU3138 GRM188B31C225KE14DC243 CU3573 GRM1554C1HR80BZ01D C310 CU3137 GRM188B31C105KA92DC244 CU3573 GRM1554C1HR80BZ01D C311 CU3535 GRM36B102K50PTC245 CU3523 GRM1552C1H101JZ01D C312 CU3554 GRM36B104K10PT T, E, EUKC246 CU3554 GRM36B104K10PT C313 CU3137 GRM188B31C105KA92DC247 CU3554 GRM36B104K10PT C314 CU3547 GRM36B103K16PTC248 CU3559 GRM155B30J105KE18D C315 CU3547 GRM36B103K16PTC249 CU3537 GRM36B152K50PT C316 CU3554 GRM36B104K10PTC250 CU3537 GRM36B152K50PT C317 CU3517 GRM36CH330J50PTC252 CU3535 GRM36B102K50PT C318 CU3516 GRM36CH270J50PTC253 CU3543 GRM36B472K25PT C319C254 CU3549 1005 B 16V 0.015UF K C320 CU3535 GRM36B102K50PTC255 CU3535 GRM36B102K50PT C321 CU3535 GRM36B102K50PTC256 CU3516 GRM36CH270J50PT C322 CU3559 GRM155B30J105KE18DC257 CU3505 GRM36CH040C50PT C323 CU3535 GRM36B102K50PTC258 CU3523 GRM1552C1H101JZ01D C324 CU3559 GRM155B30J105KE18DC259 C325 CU3554 GRM36B104K10PTC260 CU3554 GRM36B104K10PT C326C261 CU3547 GRM36B103K16PT C327 CU3137 GRM188B31C105KA92DC262 CU3535 GRM36B102K50PT C328 CU3535 GRM36B102K50PTC263 CU3508 1005 CH 50V 7PF D T, E, TFH C329 CU3554 GRM36B104K10PTC263 CU3513 GRM36CH150J50PT EUK C330 CU3535 GRM36B102K50PTC264 CU3535 GRM36B102K50PT C331 CU0119 GRM21BB30J106KE18LC265 CE0436 16CE47BSS C332 CU3535 GRM36B102K50PTC266 CU3137 GRM188B31C105KA92D C333 CU3535 GRM36B102K50PTC267 CU3535 GRM36B102K50PT C334 CU0119 GRM21BB30J106KE18LC268 CU3535 GRM36B102K50PT C335 CU3540 GRM36B272K50PTC269 CU3523 GRM1552C1H101JZ01D C336 CU3523 GRM1552C1H101JZ01DC270 CU3523 GRM1552C1H101JZ01D C337 CU3535 GRM36B102K50PTC271 CU3523 GRM1552C1H101JZ01D C338 CU3137 GRM188B31C105KA92DC272 CU3535 GRM36B102K50PT C339 CU3137 GRM188B31C105KA92DC273 CU3547 GRM36B103K16PT C340 CU3535 GRM36B102K50PTC274 CU3554 GRM36B104K10PT C341 CU3547 GRM36B103K16PTC275 CU3535 GRM36B102K50PT C342 CU3547 GRM36B103K16PTC276 CU3523 GRM1552C1H101JZ01D C343 CU3554 GRM36B104K10PTC277 CU3535 GRM36B102K50PT C344 CU3554 GRM36B104K10PTC278 CU3523 GRM1552C1H101JZ01D C345 CU3554 GRM36B104K10PTC279 CU3547 GRM36B103K16PT C346 CU3547 GRM36B103K16PTC280 CS0441 TMCMA0J226MTRF C347 CU3523 GRM1552C1H101JZ01DC281 CU3535 GRM36B102K50PT C348 CU3547 GRM36B103K16PTC282 CU3554 GRM36B104K10PT C349 CU3539 GRM36B222K50PTC284 CU3559 GRM155B30J105KE18D C350 CU3533 GRM36B681K50PTC285 CU3554 GRM36B104K10PT C351C286 CU3527 GRM1552C1E221JD01D C352 CU3547 GRM36B103K16PTC287 CU3535 GRM36B102K50PT C353 CU3539 GRM36B222K50PTC288 CU3527 GRM1552C1E221JD01D C354 CU3541 GRM36B332K50PTC289 CU3535 GRM36B102K50PT C355 CU3547 GRM36B103K16PTC290 CU3554 GRM36B104K10PT C356 CU3535 GRM36B102K50PTC291 CU3138 GRM188B31C225KE14D C357 CU3535 GRM36B102K50PTC292 CE0436 16CE47BSS C358 CU0119 GRM21BB30J106KE18LC293 CU3554 GRM36B104K10PT C359 CU3553 GRM36B473K10PTC294 CU3535 GRM36B102K50PT C360 CU3559 GRM155B30J105KE18DC295 C361 CU3535 GRM36B102K50PTC296 CE0463 10CE100BSS C362 CU3533 GRM36B681K50PTC297 C363 CU3535 GRM36B102K50PTC298 CU3535 GRM36B102K50PT C364 CU3539 GRM36B222K50PTC299 CU3137 GRM188B31C105KA92D C365 CU3533 GRM36B681K50PTC300 CU3554 GRM36B104K10PT C366 CU3537 GRM36B152K50PTC301 CU3535 GRM36B102K50PT C367 CU3523 GRM1552C1H101JZ01DC302 CE0462 6CE100BSS C368 CU3531 GRM36B471K50PTC303 CU3535 GRM36B102K50PT C369 CU3541 GRM36B332K50PTC304 CU3554 GRM36B104K10PT C370 CU3554 GRM36B104K10PT

Ref. No. Parts No. Parts name Version Ref. No. Parts No. Parts nameC371 CU3535 GRM36B102K50PT D130 XD0418 RB521S-30TE61C372 CU3559 GRM155B30J105KE18D FL101 XF0059 Q21707AD27-21.7MHZ EUKC373 FL101 XF0051 Q2175AD20 21.7MHZ T, E, TFHC375 CU3541 GRM36B332K50PT FL102 XF0059 Q21707AD27-21.7MHZ EUKC376 CU3554 GRM36B104K10PT FL102 XF0051 Q2175AD20 21.7MHZ T, E, TFHC377 CU3554 GRM36B104K10PT FL103 XC0052 ALFYM450G=K EUKC378 FL103 XC0060 ALFYM450F=K T, E, TFHC379 CU3535 GRM36B102K50PT IC101 XA1103 LM2904PWRC380 CU3535 GRM36B102K50PT IC102 XA1107 MB15E07SRPFTGBNDEFE1C381 CU3535 GRM36B102K50PT IC103 XA0404 TA31136FNG(EL)C382 CS0439 TMCMA0J476MF IC104 XA0210 IC NJM2070MC383 CU3535 GRM36B102K50PT IC105 XA1293 M62364FP#DF1GC384 CU3535 GRM36B102K50PT IC106 XA1119 XC6202P502MRC385 CU3535 GRM36B102K50PT IC107 XA0617 TC75S56FU(TE85) T, E, EUKC386 CU0119 GRM21BB30J106KE18L IC108 XA1120 S80845CLNB-B66-T2GC387 CU3535 GRM36B102K50PT IC109 XA1117 S24CS64A01-J8T1GC388 CU3535 GRM36B102K50PT IC110 XA1106 LM2902PWRC389 CU3535 GRM36B102K50PT IC111 XA1106 LM2902PWRC390 CU3554 GRM36B104K10PT IC112 XA1106 LM2902PWRC391 CU3535 GRM36B102K50PT IC113 XA1358 UPD78F0395GC-8EA-A T, E, EUKC392 CU3535 GRM36B102K50PT IC113 XA1292 UPD78F0394GC-8EA-A TFHC393 CU0119 GRM21BB30J106KE18L JK101 UJ0019 HSJ1493-01-010C394 CU3512 GRM36CH120J50PT JK102 UJ0022 HSJ1102-01-540C395 CU3535 GRM36B102K50PT L101 QS401556 0.40-1.55-6TLC396 CU3535 GRM36B102K50PT L102 QS402006 0.40-2.0-6TLC397 CU3535 GRM36B102K50PT L104 QS402006 0.40-2.0-6TLC398 CU3138 GRM188B31C225KE14D L105 QS401405 0.40-1.4-5TLC399 L106 QS501403 0.50-1.4-3TLC400 L108 QC0812 1005 100NHC401 CU3554 GRM36B104K10PT L109C403 CS0441 TMCMA0J226MTRF L110 QC0757 C1608CB22NJC404 CU3554 GRM36B104K10PT L111C413 CU3559 GRM155B30J105KE18D T, E, EUK L112 QS402057 0.40-2.05-7TLC414 CU3554 GRM36B104K10PT L113 QC0875 C2012H68NHC415 CU3554 GRM36B104K10PT L114 QC0902 C2012C1R0JCN101 L115 QC0812 1005 100NHCN102 L116 QC0736 LK10052R2K-BD101 XD0422 HSC277TRF-E L117 QB0057 MPZ1608S101ATD103 XD0419 1SS400TE61 L118 QS402057 0.40-2.05-7TLD104 L120 QB0057 MPZ1608S101ATD105 XD0421 1SV323(TPH3,H) L121 QC0818 C2012H82NHD106 XD0422 HSC277TRF-E L123 QC0736 LK10052R2K-BD107 XD0421 1SV323(TPH3,H) L124 QC0773 C1608CBR47JD108 XD0453 RB717F L125 QC0773 C1608CBR47JD109 L126 QC0769 1608CBR22JD110 XD0451 015AZ3.0-X(TPL3,F) L127 QC0765 1608 100NHD111 L128D112 XD0422 HSC277TRF-E L129 QC0812 1005 100NHD113 XD0422 HSC277TRF-E L130D114 XD0421 1SV323(TPH3,H) L132 QC0842 LB2518T221KD115 XD0421 1SV323(TPH3,H) L133 QC0812 1005 100NHD116 L134 QC0902 C2012C1R0JD117 XD0421 1SV323(TPH3,H) L135 QC0875 C2012H68NHD118 XD0421 1SV323(TPH3,H) L136 QC0875 C2012H68NHD119 XD0421 1SV323(TPH3,H) L137 QC0875 C2012H68NHD120 XD0421 1SV323(TPH3,H) L138 QC0875 C2012H68NHD121 XL0097 SML-521MUWT86 L139 QC0874 C2012H56NHD122 XD0338 1SS362(TE85L) L140D123 XL0036 LED SML-310MT L141 QC0935 LB2012T150KD124 XL0036 LED SML-310MT L142 QB0057 MPZ1608S101ATD125 XL0036 LED SML-310MT L143D126 XL0036 LED SML-310MT LCD101 EL0059 LCD DJ170D127 XD0418 RB521S-30TE61 MIC101 EY0017 OB-27P44D128 XL0036 LED SML-310MT Q101 XT0180 2SC5066FT-Y(TE85L)D129 XL0036 LED SML-310MT Q102 XE0090 SSM3J15FV(TPL3,Z)

Ref. No. Parts No. Parts name Version Ref. No. Parts No. Parts nameQ104 XT0210 2SC6026MFV-GR R136 RK3562 1005 1/16W 100K OHMJQ105 XE0091 RQA0002DNS R137 RK3551 1005 1/16W 12K OHM JQ106 XE0092 RQA0004PXDQS R138Q107 R141Q108 XT0219 15GN03F-TL-E R142 RK3530 1005 1/16W 220 OHM JQ110 XU0211 RN2107FV R143 RK3550 1005 1/16W 10K OHM JQ111 XU0210 RN1107FV R144 RK3526 1005 1/16W 100 OHM JQ112 XT0219 15GN03F-TL-E R145 RK3532 1005 1/16W 330 OHM JQ113 XT0219 15GN03F-TL-E R146 RK3550 1005 1/16W 10K OHM JQ114 XT0213 2SC5659T2L R147 RK3501 1005 1/16W 0 OHM JQ115 XT0219 15GN03F-TL-E R148Q116 XT0219 15GN03F-TL-E R149 RK3552 1005 1/16W 15K OHM JQ117 XT0214 HN2C01FE-GR(T5L,F) R150 RK3554 1005 1/16W 22K OHM JQ118 XE0053 3SK293TE85L R151 RK3537 1005 1/16W 820 OHM JQ119 XE0053 3SK293TE85L R152Q120 XT0210 2SC6026MFV-GR R153 RK3550 1005 1/16W 10K OHM JQ121 XT0213 2SC5659T2L R154 RK3570 1005 1/16W 470K OHMJQ122 R155 RK3552 1005 1/16W 15K OHM JQ123 XU0220 RN2111MFV(TPL3) R156 RK3562 1005 1/16W 100K OHMJQ124 XT0223 2SA2070(TE12L,F) R157 RK3546 1005 1/16W 4.7K OHMJQ125 XU0211 RN2107FV T, E, EUK R158 RK3570 1005 1/16W 470K OHMJQ126 R159 RK3538 1005 1/16W 1.0K OHMJQ127 XU0220 RN2111MFV(TPL3) R160Q128 XT0214 HN2C01FE-GR(T5L,F) R162 RK3538 1005 1/16W 1.0K OHMJQ129 XU0210 RN1107FV R163 RK3542 1005 1/16W 2.2K OHMJQ130 XU0212 RN2115FV R164 RK3550 1005 1/16W 10K OHM JQ131 XU0210 RN1107FV R165 RK3501 1005 1/16W 0 OHM JQ132 XT0210 2SC6026MFV-GR R166 RK3537 1005 1/16W 820 OHM JQ133 XU0213 RN1111FV TPL3 R167 RK3539 1005 1/16W 1.2K OHMJQ134 XT0223 2SA2070(TE12L,F) R168 RK3558 1005 1/16W 47K OHM JQ135 XT0212 2SA1955FV-A(TPL3) R169Q136 XT0212 2SA1955FV-A(TPL3) R170 RK3530 1005 1/16W 220 OHM JQ137 XT0212 2SA1955FV-A(TPL3) R171 RK3564 1005 1/16W 150K OHMJQ138 XU0213 RN1111FV TPL3 R172 RK3570 1005 1/16W 470K OHMJQ139 XT0214 HN2C01FE-GR(T5L,F) R173 RK3550 1005 1/16W 10K OHM JQ140 XU0213 RN1111FV TPL3 R174 RK3526 1005 1/16W 100 OHM JQ142 XE0090 SSM3J15FV(TPL3,Z) R175R101 RK3562 1005 1/16W 100K OHMJ R176 RK3530 1005 1/16W 220 OHM JR104 RK3526 1005 1/16W 100 OHM J R177 RK3530 1005 1/16W 220 OHM JR105 RK3566 1005 1/16W 220K OHMJ R178 RK3570 1005 1/16W 470K OHMJR106 RK3501 1005 1/16W 0 OHM J R179 RK3550 1005 1/16W 10K OHM JR107 RK3534 1005 1/16W 470 OHM J R180 RK3538 1005 1/16W 1.0K OHMJR108 RK3550 1005 1/16W 10K OHM J R181 RK3518 1005 1/16W 22 OHM JR111 RK3550 1005 1/16W 10K OHM J R183 RK3538 1005 1/16W 1.0K OHMJR112 RK3530 1005 1/16W 220 OHM J R184 RK3550 1005 1/16W 10K OHM JR113 RK3546 1005 1/16W 4.7K OHMJ R185 RK3574 1005 1/16W 1.0M OHMJR114 RK3538 1005 1/16W 1.0K OHMJ R186 RK3538 1005 1/16W 1.0K OHMJR116 RK3526 1005 1/16W 100 OHM J R187 RK3542 1005 1/16W 2.2K OHMJR117 RK3014 1608 1/10W 10 OHM J R188 RK3522 1005 1/16W 47 OHM JR118 RK3518 1005 1/16W 22 OHM J R189 RK3550 1005 1/16W 10K OHM JR119 RK3562 1005 1/16W 100K OHMJ R190 RK3556 1005 1/16W 33K OHM JR120 RK3530 1005 1/16W 220 OHM J R191 RK3562 1005 1/16W 100K OHMJR121 R192 RK3574 1005 1/16W 1.0M OHMJR122 RK3542 1005 1/16W 2.2K OHMJ R193 RK3562 1005 1/16W 100K OHMJR123 R194 RK3562 1005 1/16W 100K OHMJR124 RK3552 1005 1/16W 15K OHM J R195 RK3560 1005 1/16W 68K OHM JR126 R196 RK3566 1005 1/16W 220K OHMJR127 RK3557 1005 1/16W 39K OHM J R198 RK3550 1005 1/16W 10K OHM JR128 RK3562 1005 1/16W 100K OHMJ R199 RK3570 1005 1/16W 470K OHMJR130 RK3562 1005 1/16W 100K OHMJ R200 RK3550 1005 1/16W 10K OHM JR131 RK3558 1005 1/16W 47K OHM J R201 RK3550 1005 1/16W 10K OHM JR132 RK3557 1005 1/16W 39K OHM J R202 RK3558 1005 1/16W 47K OHM JR133 RK3518 1005 1/16W 22 OHM J R203 RK3562 1005 1/16W 100K OHMJR134 RK3501 1005 1/16W 0 OHM J R204 RK3570 1005 1/16W 470K OHMJR135 RK3551 1005 1/16W 12K OHM J R205 RK3542 1005 1/16W 2.2K OHMJ

Ref. No. Parts No. Parts name Version Ref. No. Parts No. Parts nameR206 RK3536 1005 1/16W 680 OHM J EUK R276 RK3552 1005 1/16W 15K OHM JR206 RK3539 1005 1/16W 1.2K OHMJ T, E, TFH R277 RK3552 1005 1/16W 15K OHM JR207 RK3536 1005 1/16W 680 OHM J EUK R278 RK3550 1005 1/16W 10K OHM JR207 RK3539 1005 1/16W 1.2K OHMJ T, E, TFH R279 RK3514 1005 1/16W 10 OHM JR208 RK3550 1005 1/16W 10K OHM J R280 RK3562 1005 1/16W 100K OHMJR209 RK3556 1005 1/16W 33K OHM J R281 RK3562 1005 1/16W 100K OHMJR210 RK3538 1005 1/16W 1.0K OHMJ R282 RK3538 1005 1/16W 1.0K OHMJR211 RK3550 1005 1/16W 10K OHM J R283 RK3550 1005 1/16W 10K OHM JR212 RK3518 1005 1/16W 22 OHM J R284 RK3550 1005 1/16W 10K OHM JR213 RK3550 1005 1/16W 10K OHM J R285 RK3562 1005 1/16W 100K OHMJR214 RK3518 1005 1/16W 22 OHM J R286 RK3562 1005 1/16W 100K OHMJR215 RK3574 1005 1/16W 1.0M OHMJ R287 RK3550 1005 1/16W 10K OHM JR216 RK3574 1005 1/16W 1.0M OHMJ R288 RK3560 1005 1/16W 68K OHM JR217 RK3574 1005 1/16W 1.0M OHMJ R289 RK3558 1005 1/16W 47K OHM JR218 R290 RK3566 1005 1/16W 220K OHMJR219 RK3550 1005 1/16W 10K OHM J R291 RK3558 1005 1/16W 47K OHM JR220 RK3574 1005 1/16W 1.0M OHMJ R292 RK3562 1005 1/16W 100K OHMJR221 RK3574 1005 1/16W 1.0M OHMJ R293 RK3562 1005 1/16W 100K OHMJR222 RK3564 1005 1/16W 150K OHMJ R294 RK3562 1005 1/16W 100K OHMJR223 R295 RK3562 1005 1/16W 100K OHMJR225 RK3550 1005 1/16W 10K OHM J T, E, TFH R297 RK3550 1005 1/16W 10K OHM JR225 RK3547 1005 1/16W 5.6K OHMJ EUK R298 RK3554 1005 1/16W 22K OHM JR226 RK3550 1005 1/16W 10K OHM J R299 RK3554 1005 1/16W 22K OHM JR227 RK3564 1005 1/16W 150K OHMJ R300 RK3556 1005 1/16W 33K OHM JR228 RK3554 1005 1/16W 22K OHM J R301 RK3550 1005 1/16W 10K OHM JR229 RK3544 1005 1/16W 3.3K OHMJ R302 RK3554 1005 1/16W 22K OHM JR230 RK3501 1005 1/16W 0 OHM J R303 RK3559 1005 1/16W 56K OHM JR231 RK3514 1005 1/16W 10 OHM J R304 RK3550 1005 1/16W 10K OHM JR233 RK3536 1005 1/16W 680 OHM J R305 RK3568 1005 1/16W 330K OHMJR234 RK3532 1005 1/16W 330 OHM J R306 RK3536 1005 1/16W 680 OHM JR235 RK3562 1005 1/16W 100K OHMJ R307 RK3562 1005 1/16W 100K OHMJR237 RK3570 1005 1/16W 470K OHMJ R308 RK3550 1005 1/16W 10K OHM JR239 RK3574 1005 1/16W 1.0M OHMJ R309 RK3550 1005 1/16W 10K OHM JR240 RK3562 1005 1/16W 100K OHMJ T, E, EUK R310 RK3546 1005 1/16W 4.7K OHMJR241 RK3550 1005 1/16W 10K OHM J T, E, EUK R311 RK3550 1005 1/16W 10K OHM JR242 RK3566 1005 1/16W 220K OHMJ R312 RK3550 1005 1/16W 10K OHM JR243 RK3566 1005 1/16W 220K OHMJ R313 RK3559 1005 1/16W 56K OHM JR244 RK3550 1005 1/16W 10K OHM J T, E, EUK R314 RK3559 1005 1/16W 56K OHM JR245 RK3553 1005 1/16W 18K OHM J R316 RK3550 1005 1/16W 10K OHM JR246 RK3550 1005 1/16W 10K OHM J R317 RK3570 1005 1/16W 470K OHMJR247 RK3574 1005 1/16W 1.0M OHMJ R318 RK3546 1005 1/16W 4.7K OHMJR248 RK3550 1005 1/16W 10K OHM J R319 RK3559 1005 1/16W 56K OHM JR249 RK3550 1005 1/16W 10K OHM J R320 RK3562 1005 1/16W 100K OHMJR250 RK3550 1005 1/16W 10K OHM J R321R251 RK3546 1005 1/16W 4.7K OHMJ R324 RK3558 1005 1/16W 47K OHM JR252 RK3526 1005 1/16W 100 OHM J T, E, EUK R325 RK3558 1005 1/16W 47K OHM JR253 RK3550 1005 1/16W 10K OHM J T, E, EUK R326 RK3562 1005 1/16W 100K OHMJR254 RK3553 1005 1/16W 18K OHM J R327 RK3566 1005 1/16W 220K OHMJR255 RK3566 1005 1/16W 220K OHMJ R328 RK3559 1005 1/16W 56K OHM JR256 RK3562 1005 1/16W 100K OHMJ R329 RK3556 1005 1/16W 33K OHM J TFHR257 RK1018 3216 1/8 W 100 OHM J R329 RK3557 1005 1/16W 39K OHM J T, E, EUKR258 RK3566 1005 1/16W 220K OHMJ R330 RK3550 1005 1/16W 10K OHM J TFHR259 RK3501 1005 1/16W 0 OHM J T, E, EUK R330 RK3551 1005 1/16W 12K OHM J T, E, EUKR260 RK3562 1005 1/16W 100K OHMJ T, E, EUK R331 RK3550 1005 1/16W 10K OHM JR261 R333 RK3546 1005 1/16W 4.7K OHMJR262 RK3542 1005 1/16W 2.2K OHMJ R334 RK3546 1005 1/16W 4.7K OHMJR263 RK3554 1005 1/16W 22K OHM J R335 RK3546 1005 1/16W 4.7K OHMJR265 RK3550 1005 1/16W 10K OHM J R336 RK3546 1005 1/16W 4.7K OHMJR266 RK3574 1005 1/16W 1.0M OHMJ R337 RK3558 1005 1/16W 47K OHM JR267 RK3538 1005 1/16W 1.0K OHMJ R338 RK3558 1005 1/16W 47K OHM JR268 RK3562 1005 1/16W 100K OHMJ R339R269 RK3558 1005 1/16W 47K OHM J R340 RK3552 1005 1/16W 15K OHM JR270 RK3550 1005 1/16W 10K OHM J R341 RK3562 1005 1/16W 100K OHMJR271 RK3538 1005 1/16W 1.0K OHMJ R342 RK3537 1005 1/16W 820 OHM JR273 RK3560 1005 1/16W 68K OHM J R343 RK3550 1005 1/16W 10K OHM J

Ref. No. Parts No. Parts name Version Ref. No. Parts No. Parts nameR344 RK3537 1005 1/16W 820 OHM J KZ0219 FRONT CASE ASSYDJ175R345 RK3546 1005 1/16W 4.7K OHMJ NK0081 KNOBR346 RK3562 1005 1/16W 100K OHMJ SD0111A BATTERY TERMINALR347 RK3562 1005 1/16W 100K OHMJ SD0137 TERMINALR348 RK3562 1005 1/16W 100K OHMJ SP0013 KNOB SPRING 7800R349 RK3550 1005 1/16W 10K OHM J SS0112 CHASSISR350 RK3550 1005 1/16W 10K OHM J ST0089 LCD HOLDERR351 RK3542 1005 1/16W 2.2K OHMJ TL0033 REFLECTIVE SHEETR352 RK3550 1005 1/16W 10K OHM J TS0188 VCO CASE DJ175R353 RK3538 1005 1/16W 1.0K OHMJ UE0571 SMA ANT CONNECTORR354 RK3550 1005 1/16W 10K OHM J UR0027 ROTARY ENCODERR355 RK3538 1005 1/16W 1.0K OHMJ YX0045 LCD TAPER356 RK3536 1005 1/16W 680 OHM JR357 RK3550 1005 1/16W 10K OHM JR358 RK3538 1005 1/16W 1.0K OHMJ CHARGER UNIT (EDC-165)R359 RK3566 1005 1/16W 220K OHMJ Ref. No. Parts No. Parts nameR360 RK3562 1005 1/16W 100K OHMJ D101 XL0125 MVR3338SR361 RK3554 1005 1/16W 22K OHM J JK101 UJ0033 HEC2781-010520R362 R101 RF0027 SPR3 56 OHMR363 R102 RK3038 1608 1/10W 1.0KOHM JR363 RK3538 1005 1/16W 1.0K OHMJ TFH R103R363 RK3564 1005 1/16W 150K OHMJ E, EUK UP0613 EDC165 INTEGRATEDR365 RK3534 1005 1/16W 470 OHM J AP0017 PH P2.6+10 FE/B.ZNR366 RK3501 1005 1/16W 0 OHM J DD0017 BLIND SHEETR367 RK3501 1005 1/16W 0 OHM J KS0103 BOTTOM CASE EDC165R368 RK3546 1005 1/16W 4.7K OHMJ KU0162 UPPER CASE EDC164R369 RK3538 1005 1/16W 1.0K OHMJ SP0020 CHARGE TERMINALR370 RK3550 1005 1/16W 10K OHM J TT1002 1.0X1MMR371 RK3562 1005 1/16W 100K OHMJR372 RK3560 1005 1/16W 68K OHM J T, E, EUKR372 RK3554 1005 1/16W 22K OHM J TFH ACCESSORIESR373 RK3574 1005 1/16W 1.0M OHMJ BB0009Y HAND STRAP DJS41R374 RK3558 1005 1/16W 47K OHM J BH0011 BELT CLIPR375 RK3562 1005 1/16W 100K OHMJ DS0446 NITTO MODEL PLATE(S)R376 EA0141 ANTENNA EA0141 T, E, EUKR377 RK3558 1005 1/16W 47K OHM J EA0142 ANTENNA EA0142 TFHR378 RK3558 1005 1/16W 47K OHM J EDC146 AC ADAPTOR 120V TSW101 UU0043 EVQPJ705K EDC147 AC ADAPTOR 230V T, E, EUKTH101 EDC148 AC ADAPTOR 230V UK PLUG EUKW101 MRCL07AA #30R02-070-02 EBP072 NI-MH BATTERY PACKW102 MACL07AA #30A02-070-02W103 MACLH2GG #30AH1-025-H1 T, EX102 XQ0208 DSX321SC21.250MHZX103 XK0005 CDBCB450KCAY24-R0X104 XQ0212 SMD-49 8.192MHZ

UP0619A DJ175 INTEGRATED-AAF0003 0PH M2+3 FE/N3AF0030 0PH2+6FE/N1AN0034 M6 NUT BR/B.NAN0042 DIAL NUTAX0009 OPH P2+6 FE/N 1DG0046 LCD LIGHT DJ170DP0195 LCD PANELES0027 36-8BB-10B2 ROHSFG0234Y MIC HOLDER DJ190FG0392 WATERPROOF CAPFG0418 LCD RUB CONEFG0478 KEYBOADFG0479 PTT RUBBERFG0480 JACK CAPFM0265A HEAT SINK, DJV17FM0300 ANT GND DJ175FP0310 TERMINAL CASEFP0321 SPACERFP0324 BLIND SHEET DJ175

YX0045

DP0195

KZ0219

NK0081

FG0392

FG0480 FG0479

AX0009FG0478

ES0027

FG0418

DG0046

TL0033

FG0234Y

SS0112

AN0034

AN0042

FM0300

SD0137

AF0003

AF0003

FP0310

SD0111A

EL0059

ST0089

AF0003

UE0571

UR0027

FP0321

FP0324

AF0030

AF0003

PC Board ViewMAIN - Side A

PC Board ViewMAIN - Side B

(Anode)

R101

JK101

D101

(-)(+)

T103 T101 T102

R102

R103

Side-A

Side-B

PC Board View EDC165

Adjustments: 1) Required Test Equipment The following items are required to adjust radio parameters 1.Regulated power supply

Supply voltage: 7－8 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 Impedance: 50Ω, unbalanced Modulation: FM

6.Power meter Measurable frequency: Up to 200MHz Impedance: 50Ω, unbalanced Measuring range: 0.1W-10W

7.Audio volmeter Measurable frequency: Up to 100kHz Sensitivity: 1mV to 10V

8.Audio generator Output frequency: 67Hz to 10kHz Output impedance: 600Ω, unbalanced

9.Distortion meter/SINAD meter Measurable frequency: 1kHz Input level: Up to 40dB Distortion: 1％-100％

10.Frequency counter Measurable frequency: Up to 200MHz Measurable stability: Approx. ±0.1ppm

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

12. DC Ammeter 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 8Ω (4). Standard audio output level: 50mW at 8Ω (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

2) Adjustment mode

The adjustment 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 adjustment mod. Please refer the chart below for the programming channels. The frequencies may be varied within the range of ±0.2Mhz depending on the RF environment around your work area, and refer the instruction manual for how to program the memories into the memory-channels.

To enter the adjustment 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 that decimal points appear on the display below 100MHz and 10MHz digits. To exit from the adjustment 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 adjustment values resulting the malfunction of the unit in the operating mode. The chart below shows the adjustment points and interface between the unit and instruments. Please use an attenuator in case the specifications of the linear-detector and frequency counter may exceed the requirement herein.

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

T, E, EUK TFH1 Frequnecy Adjustment 145.000 162.0002 TX-output / High power 145.000 162.0003 TX-output / Mid power 145.000 162.0004 TX-output / Low power 145.000 162.0005 Microphone deviation 145.000 162.0006 CTCSS tone deviation 145.000 162.0007 DCS deviation 145.000 162.00011 Sensitivity adjustment (lower edge) 137.000 137.00012 Sensitivity adjustment (center range) 150.000 150.00013 Sensitivity adjustment (upper range) 173.000 173.00014 Squelch adjustment (minimum) 145.000 162.00015 Squelch adjustment (maximum) 145.000 162.00016 S-meter adjustment (1) 145.000 162.00017 S-meter adjustment (Full) 145.000 162.000

FrequencyChannel Adjustment menu

1. Frequency adjustment Select memory ch.1. Press PTT on the unit to transmit and measure 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 instrument: (1). Frequency counter

2. TX output – High power

Select memory ch.2. 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 TX power to meet the specification. Release the PTT to finish the adjustment. Be sure to check the consuming current value after the adjustment is completed.

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

Necessary instrument: (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 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: 2.0 watts Necessary instrument: (1). Power meter

4. TX output – Low power Select memory ch.4. Press PTT on the unit to transmit. 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

5. Microphone deviation Select memory ch.5. Input the signal as specified below from an Audio generator and transmit. 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 adjustment of the sign-wave

Select memory ch.6. Press PTT to automatically transmit 88.5Hz tone. 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 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 automatically transmit 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 number 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

OK

NG

NG

8. Receiver sensitivity adjustment 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: -7.0dBμ 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: -8.0dBμ Modulation Frequency:1kHz Modulation Level:3.0kHz (T, E, TFH)/ 1.5KHz (EUK)

a. Upper edge Condition:(1). Memory Channel: 13

(2). SSG setting Frequency: 173.000MHz RF Output Level: -8.0dBμ Modulation Frequency:1kHz Modulation Level:3.0kHz (T, E, TFH)/ 1.5KHz (EUK)

Necessary instruments:(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.

9. Squelch adjustments: Select the memory channel number 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: -11dBμ 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:0dBμ Modulation Frequency:1kHz Modulation Level:3.0kHz (T, E, TFH)/ 1.5KHz (EUK)

Necessary instrument:(1). SSG

10. S-meter adjustments Select the memory channel number 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:-5dBμ 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:15dBμ Modulation Frequency:1kHz Modulation Level:3.0kHz (T, E, TFH)/ 1.5KHz (EUK)

Necessary instrument:(1). SSG

KO

3

KO

2

KO

1

KO

0

KI3

KI2

KI1

KI0

SE

G31

CO

M0

SE

G30

SE

G29

SE

G28

SE

G27

SE

G26

SE

G25

SE

G24

SE

G23

SE

G22

SE

G21

SE

G20

SE

G19

SE

G18

SE

G17

SE

G16

SE

G15

SE

G14

SE

G13

SE

G12

SE

G11

SE

G10

SE

G9

SE

G8

SE

G7

SE

G6

SE

G5

SE

G4

SE

G3

SE

G2

SE

G1

SE

G0

CO

M3

CO

M2

CO

M1

SCL

SDA

RE2

RE1

P5C

STBP

DATA

CLK

T5C

R5C

LDDA

CLK

DATA

SC

L

SD

A

RE

2

TON

E

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F

CO

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CO

M2

CO

M1

CO

M0

R5CT5

C

P5C

FLS

W

PS

W

XO

UT

FLM

D

RE

SE

T

BE

EP

XIN

CLS

FT

FSK

SE

G31

SE

G30

SEG29

SEG28

SEG27

SEG26

SEG25

SEG24

SEG23

SEG22

SEG21

SEG20

SEG19

SEG18

SEG17

SEG16

SEG15

SEG14

SEG13

SEG12

SEG11

SEG10

SEG9

SEG8

SEG7

SEG6

SEG5

SE

G4

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G3

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G2

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G1

SE

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SQL

MUTE

C5C

LDDA

CLK

DATA

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KO2

KO1

KO0

KI3

KI2

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VDET

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RE

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21 A3

654 B

7 8 9 C

0 # D*

RE101RH70N97E20

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W102

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MICC

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MACLH2GG

MACLH2GG

R363 W103

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TC75S56FU

TC75S56FU

IC107

NC

150k

NC

150k

1k

TC75S56FU

NC NC NC

Q125

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RN2107MFV

RN2107MFV

C305

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2.2/16V

2.2/16V

C312 C413

0.1

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0.1 1

1

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R240 R241 R244 R252 R253 R259

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10k

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100

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7p

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15p

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21.7M-W

21.7M-W

21.7M-N

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ALFYM450F

ALFYM450F

ALFYM450G

FL103 R206 R207

680 680

1.2k

1.2k

1.2k 1.2k

1.2k

R225 R330 R372

1.2k 10k

10k

10k

5.6k

12k

12k

12k

10k

68k

68k

68k

22k

C209

18p

22p

22p

22p

W10

3V

al

R260

100k

100k

100k

NCNC

18p

18p

C130

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E

T

Val

EUK

TFH

39k

33k

39k

R329

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IC113

Schematic diagram DJ-175

uPD78F0395GC

uPD78F0395GC

uPD78F0395GC

uPD78F0394GC

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D126SML310MT

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S31

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S30

2

S29

3

S28

4

S27

5

S26

6

S25

7

S24

8

S23

9

S22

10

S21

11

S20

12

S19

13

S18

14

S17

15

S16

16

S15

17

S14

18

S13

19

S12

20

S11

21

S10

22

S9

23

S8

24

S7

25

S6

26

S5

27

S4

28

S3

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S2

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S1

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S0

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CO

M3

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CO

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CO

M1

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R2821k

R2711k

R256100k

R255220k

R268100k

R2671k

R26

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C32

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IC108S80845CLNB

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13

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Clock

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Data

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7

8

9

10

11

12 13

14

15

16

17

18

19

20

21

22

23

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LD

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CLK

V

V

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V

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V

VV

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OUT5

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IN4

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DD

Do

GND

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01S

V32

3

C2574p

L138

68n

C25627p

C2550.001

C28

10.

001

FL103Val

C27

30.

001

C23

20.

001

R37

2V

alC

298

0.00

1

C28

90.

001

R225Val

Q128HN2C01FE

C41

1N

C

C39

70.

001

C29

40.

001

C26

70.

001

C26

40.

001

C28

70.

001

C30

70.

001

C32

00.

001

C32

10.

001

C35

60.

001

Q130RN2115MFV

C33

00.

001

Q144NC

Q125Val

R24

4V

alC

312

Val

R24

0V

al

R252Val

R241Val

R253Val

C30

5V

al

R260Val

IC107Val

4

V+5 1

G 2

3

C33

20.

001

C32

80.

001

C33

30.

001

C34

00.

001

R330Val

C406NC

R382NC

D131NC

C40

7N

C

R38

3N

C

R27

910

Q143NC C

337

0.00

1C

357

0.00

1

C38

50.

001

C38

70.

001

C38

80.

001 C

381

0.00

1

C38

30.

001

C38

90.

001

C38

40.

001

C39

20.

001

C41

2N

CC

379

0.00

1

C38

0.0

001

C39

10.

001

C32

30.

001

C30

30.

001

C31

10.

001

C30

10.

001

C39

60.

001

IC109S24CS64A01A01

A12

A23

GND4 SDA 5SCL 6WP 7

VCC 8

R36

2N

C

R36

010

0kR

363

Val

CN102

7654321

D130RB521S-30

R35

922

0kR

361

22k

Q11215GN03F

C11256p

R22

2V

alR

345

4.7k

C41

50.

1

C413Val

Q102SSM3J15FV

C41

40.

1IC113

uPD78F0395GC-8EA-A

S226

S327

S428

S529

S630

S731

S832

S933

S1034

S1135

S1236

S1337

S1438

S1539

S1640

S1741

S1842

S1943

S2044

S2145

S2246

S2347

S2448

S2549

S2650

S27

51

S28

52

S29

53

S30

54

S31

55

S32

56

S33

57

S34

58

S35

59

S36

60

S37

61

S38

62

S39

63

LVS

S64

LVD

D65

P32

66

P31

67

P30

68

TO50

69

P16

70

P15

71

P14

72

P13

73

P12

74

RX

D0

75

TXD0 76AVREF 77

AVSS 78ANI7 79ANI6 80ANI5 81ANI4 82ANI3 83ANI2 84ANI1 85ANI0 86P04 87P03 88P02 89P01 90P00 91P05 92P06 93P70 94P71 95P72 96P73 97P74 98P75 99P77 100

P77

1P

120

2TO

513

P61

/SD

A0

4P

60/S

CL0

5R

ES

ET

6P

124

7P

123

8FL

MD

09

X2

10X

111

RE

GC

12V

SS

13V

DD

14C

AP

H15

CA

PL

16V

LC0

17V

LC1

18V

LC2

19C

OM

020

CO

M1

21C

OM

222

CO

M3

23S

024

S1

25

Schematic Diagram EDC-165

D101

MVR3338S

R102

1k

R103

NC

R101

56/3W

JK101

2

3

1T101

T102

LPF

D101 HSC277D112 HSC277D113 HSC277

ANT SW

D120 1SV323

BPF RF AMP

3SK293Q119

BPF

D118 1SV323D117 1SV323

D119 1SV3233SK293

1st MIXER

Q118 FL101FL102

21.7MHz

MCF IF AMP

2SC5659Q121

CERAMIC FILTER

FL103450KHz

DISCRIMINATOR

X103

BUFFER

Q115

2SC6026MFVQ120

AF AMP

Q117HN2C01FE

ACTIVE FILTER (HPF) MUTE

Q142SSM3J15FV

SW-AUDIO

AUDIO AMP

NJM2070M

Q128 HN2C01FE

IC104

Q124 2SA2070

AFP

MUTESMT SQL

TA31136FNIC103

APC DET

RB717FD108

POWER AMP DRIVER PRI-DRIVER

Q105RQA0002

Q106RQA0004

Q101 Q11315GN03F

15GN03FQ112

D115 1SV323D114 1SV323

15GN03FQ108

BUFFER AMP LOOP FILTER

MB15E07SL

PLL IC TCXO

21.25MHzX102

STBCLK

DATA

D107 1SV323D105 1SV323

VCO-RX

VCO-TX

MODULATIONAPC AMP

IC101LM2904PWM

M62364FP

BUFFER

Q1142SC5659

TONE LPF

LM2902PWR

TIN

BUFFER

2SC5066FTIC105

CLKDATA

LDDA

LM2902PWR

ACTIVE FILTER (LPF)

DTMF

15GN03F

TUNE

IF DETECTOR

D/A CONVERTER (POTENTIOMETER)

IC112 2/4

BAT

5V REGULATOR

RESET

S80845CLNB

XC6202P502M

LM2902PWR

ACTIVE FILTER (LPF)

TONE (67-250.3Hz)/ DCS (023-754)IC112 1/4

*

7

4

1

0

8

5

2

#

9

6

3

D

C

B

A

KEY INPUT

LCD

ROTARY ENCODER

D123 SML310MTD124 SML310MTD125 SML310MTD126 SML310MTD128 SML310MTD129 SML310MT

BACK LIGHT

Q140 RN1111MFV

LAMP SW

Q133 RN1111MFVQ138 RN1111MFV

EEP ROM

S24CS64A01

XTAL OSC

X104RN2111MFV

CLOCK SHIFT

SW-TX

2SA1955FV

T5C

T5V

SW-RX

2SA1955FV

R5C

R5V

SW- PLL

Q1372SA1955FV

P5C

P5V

C5V SW

HN2C01FE

C5C

RN1107MFV

MIC MUTE

Q122

MUTE

IC110LM2902PWR

IDC/ SPLATTER FILTER

RN2115MFV

PTT-SW

Q130PTTK

PTT

MONI

POWER

FUNC

+B

BATTERY 7.2V

SPEAKER

MIC

RECEIVE/TRANSMIT

CPU CONTROL

RECEIVE

TRANSMIT

IC109

CPU

IC106

Q1322SC6026MFV

IC108

8.192MHzQ127

Q135

Q136

Q139

Q1342SA2070

C5V

IC111

IC102

Q116

IC113

SD SW

Q123RN2111MFV

T5V

D121SML521MUW

TX/ RX LED

SPEAKER JACK

MIC JACK

CLONE

D127 RB521S-30TXD/RXD

2SC5066

uPD78F0395GC-8EA-A

D106 HSC277

Block Diagram DJ-175