SERVICE MANUAL
MJ-327
VHF FM TRANSCEIVERS
2
SPECIFICATIONS
GENERAL
Frequencyy Range 136--174MHz
Workingg Temperate －20℃~＋55℃
Operating Voltage DC 7.2V
Current Consumption ≤1.6A(transmit 4W)
Sensitivity Adjust 220mV
Antenna impedance 50Ω
TRANSMITTER
Frequency Stability ±5ppm
Output Power 4W(High),2W(Low) Maxx Frequency Deviation ≤ 5KHz
Audio Distortion ≤３%
Adjacent Channel Power ≥-65dB
Occupied Bandwidth ≤16KHz
RF Sensitivity : ≤2μV
Audio Output ≥0.5W
Audio Distortion ≤10%
All stated specifications are subject to change without notice or obligation.
FB617
CIRCUIT DESCRIPTION
1. Frequency configuration
The receiver utilizes double conversion. The first IF is 38.85MHz and the second IF is 450kHz. The first local oscillator signal is supplied from the PLL circuit. The PLL circuit in the transmitter generates the ecessary frequencies. Fig. 1 shows the frequencies.
2. Receiver
The freauency configuration of the receiver is shown in Fig.2.
1) Front - end RF amplifier
An incoming signal from the antenna is applied to an RF amplifier (T226) after passing
through a transmit/receive switch circuit (D154 ,D211,D212) and a 3-pole LC
filter(L214,C215).After the signal is amplified (T226), the signal is filtered by a band pass
filter (a 3-pole LC filter) (L230,C230,L235,L235) to eliminate unwanted signals before
it is passed to the first mixer. The voltage of these diodes are controlled by to track
the MPU(U811) center frequency of the band pass filter. (See Fig. 2)
4 2) First Mixer
The signal from the RF amplifier is heterodyned with the first local oscillator signal from the PLL frequency synthesizer circuit at the first mixer (T248) to create a 38.85MHz first intermediate frequency (1st IF) signal. The first IF signal is then fed through crystal filters (FL254,FL255) to further remove spurious signals.
3) IF amplifier
The first IF signal is amplified by T255, and then enters U261 (FM processing IC). The signal is heterodyned again with a second local oscillator signal within U261 to create a 450kHz second IF signal. The second IF signal is then fed through a 450kHz ceramic filter (FL263) to further eliminate unwanted signals before it is amplified and FM detected in FL240.
4) AF amplifier
The recovered AF signal obtained from U261 goes to the microprocessor(U811). The processed AF signal passes through an AF volume control and is amplified to a sufficient level to drive a loud speaker by an AF power amplifier (U481).
5) Squelch
Part of the AF signal from the IC enters the FM IC again,and the noise component is amplified and rectified by a filter and an amplifier to produce a DC voltage corresponding to the noise level. The DC signal from the FM IC goes to the analog port of the microprocessor (U811). U811 determines whether to output sounds from the speaker by checking whether the input voltage is higher or lower than the preset value.To output sounds from the speaker, U811 sends a high signal to the AF Power Iines and turns U481 on through T471,T472.
6) Receive signaling QT/DQT
The output signal from FM IC (U261) enters the microprocessor(U811) .U811 determines whether the QT or DQT matches the preset value, and controls the AF Power and the speaker output sounds according to the squelch results
3. PLL frequency synthesizer
The PLL circuit generates the first local oscillator signal for reception and the RF signal for transmission.
1) PLL
The frequency step of the PLL circuit is 5 and 6.25kHz and so on. A 19.2MHz reference oscillator signal is divided at U311 by a fixed counter to produce the 5 or 6.25kHz reference frequency. The voltage controlled oscillator (VCO) output signal is buffer amplified by T340, then divided in U311 by a programmable counter . The divided signal is compared in phase with the 5 or 6.25kHz reference signal in the phase comparator in U311. The output signal from the phase comparator is filtrered through a low-pass filter and passed to the VCO to control the oscillator frequency.
2) VCO
The operating frequency is generated by T340 in transmit mode and T341 in receive
mode. The oscillator frequency is controlled by applying the VCO control voltage, obtained
from the phase comparator, to the varactor diodes (D330 and D331 in transmit mode and
D340 and D341 in receive mode). The TC/RC pin is set low in receive mode causing T3 45
off, and turn T337 on . The TC/RC pin is set hight in transmit mode causing T337 off,and
T192,T191 on.
3) UNLOCK DETECTOR
If a pulse signal appears at the LD pin of U311, an unlock condition occurs, and the DC voltage obtained from D309, and C311 causes the voltage applied to the PLL-LD pin of the microprocessor to go low. When the microprocessor detects this condition, the transmitter is disabled, ignoring the push-totalk switch input signal. ( See Fig.3)
4. Transmitter
1)Microphone Amplifier
The signal from the microphone passes through U511.The signal passes through the Audio processor(U511) for the maximum deviation adjustment,and goes to the VCO modulation input.
2)Drive and Final Amplifier
The signal from the T/R switch(D154 and D155) is amplified by the pre-drive(T112.T120) and drive amplifier(T133) to 50mW.The output of the drive amplifier is amplified by the RF power amplifier(T145) to3.0W(1W when the power is low).the RF power amplifier consists of two MOS FET stages.The output of the RF power amplifier consists of two MOS FET stages.The output of the RF power amplifier is then passed through the harmonic filter (LPF) and antenna switch (D154,D155)and applied to the antenna terminal.
5. Power supply
There are four 5V power supplies for the microprocessor: 5M,5C,5R,and 5T,5M for microprocessor is always output while the power is on.5M for microprocessor is always output while the power is on.5M is always output,but turns off when the power is turned off to prevent malfunction of the microprocessor.
5C is a common 5V and is output when SAVE is not set to OFF.
5R is 5V for reception and output during reception.
5T is 5V for transmission and output during transmission.
6.Control Circuit
The control circuit consists of a microprocessor (U811) and its peripheral circuits.it controls the TX-RX unit.U811 mainly performs the following:
(1) Switching between transmission and reception by the PTT signal input.
(2) Reading system,group,frequency,and program data from the memory circuit.
(3) Sending frequency program data to the PLL.
(4) Controlling squelch on/off by the DC voltage from the squelch circuit.
(5) Controlling the audio mute circuit by the decode data input.
(6) Transmitting tone and encode data.
FB617
6 1)Memory Circuit
Memory circuit consists of the CPU (U811) and an EEPROM(U831).An EEPROM has a capacity of 32K bits that contains the transceiver control program for the CPU and data such as Transceiver channels and operation features
2)Low Battery Warning
The battery voltage is checked using by the microprocessor.
(1) The red LED blinks when the battery voltage falls below 6.2V.
(2) A Warning tone generates when the red LED blinking. ( See Fig.4)
ADJUSTMENT
Required Test Equipment
The following items are required to adjust radio parameters:
1. Regulated power supply Supply voltage: 5-14V DC Current: 3A or more 2. Digital multimeter
Voltage range: FS = Approx. 20V Current: 10A or more
Input resistance: High impedance 3. Oscilloscope
Measurable frequency: Audio frequency 4. Audio dummy load
Impedance: 8 ohm Dissipation: 1W or more Jack: 3.5mm
5. SSG
Output frequency: 200MHz or more Output level: -20dBu/0.1uV -120dBu/1V Modulation: FM
6. Spectrum Analyzer
Measuring range: Up to 2GHz or more 7. Power meter
Measurable frequency: Up to 200MHz Impedance: 50, unbalanced
Measuring range: 0.1W -10W 8. Audio volmeter
Measurable frequency: Up to 100KHz Sensitivity: 1mV to 10V
9. Audio generator
Output frequency: 67Hz to 10KHz
8
Output impedance: 600, unbalanced 10.Distortion meter/SINAD meter Measurable frequency: 1kHz Input level: Up to 40dB Distortion: 1% - 100%
11.Frequency counter
Measurable frequency: Up to 200MHz Measurable stability: Approx. +/-0.1ppm 12.Linear detector
Measurable frequency: Up to 200MHz Characteristics: Flat
CN: 60dB or more Note
Standard modulation: 1kHz +/-2.5kHz/DEV Reference sensitivity: 12dB SINAD
Specified audio output leve: 200mW at 8
0402 Capacitance 11
0402 Capacitance 8
0402 Capacitance 16
0402 Capacitance 11
0402 Capacitance 2
0402 Capacitance 1
0402 Capacitance 2
0402 Capacitance 1
0402 Capacitance 3
0402 Capacitance 3
0402 Capacitance 2
0402 Capacitance 3
0402 Capacitance 1
0402 Capacitance 12
332P C442. C448. C862
C537
470P C185. C195. C374. C403. C411. C420.
C438 C453 C532 C533 C665 C912 C434
104P C388. C402. C422. C441. C444. C535.
C540. C542. C650. C656. C663
105P C375. C524
273P C371. C372
150P C541
223P
102P C181. C304. C377. C389. C407. C731.
C830. C902
100P C192. C421. C423. C424. C425. C426.
C427. C428. C429. C430. C432
103P
C201. C261. C302. C414. C451. C549.
C549. C654. C659. C668. C673. C827.
C841. C842. C911. C913
10P
120P C528. C539
C406. C431. C529 C612. C712. C858 220P
33P
p
0402 Capacitance 3
0402 Capacitance 2
0402 Capacitance 1
0402 Capacitance 1
0402 Capacitance 1
0402 Capacitance 1
0402 Capacitance 1
0805 Capacitance 1
0402 Resistor 1
0402 Resistor 5
0402 Resistor 6
0402 Resistor 12
0402 Resistor 1
0402 Resistor 2
0402 Resistor 1
0402 Resistor 6
0402 Resistor 1
0402 Resistor 1
0402 Resistor 7
0402 Resistor 2
0402 Resistor 1
1K8 R867
1K R526. R652. R669. R712. R869. R900.
R901
1K5 R432. R436
180K R832
18K R404
120K R374. R379
12K R527
150KD R192. R194. R195. R196. R197. R198
100R R283. R304. R438. R713. R843. R844
10K R181. R376. R444. R449. R535. R648.
R654. R658. R660. R827. R909. R910
10R R450
9P C257
105P C857
0R R532
100K R403. R525. R540. R545. R661
563P C526
680P C443
820P C447
47P C538
472P 473P
C438. C453. C532. C533. C665. C912 C671. C672. C674
C404. C445
0402 Resistor 3
0402 Resistor 2
0402 Resistor 1
0402 Resistor 1
0402 Resistor 2
0402 Resistor 1
0402 Resistor 1
0402 Resistor 2
0402 Resistor 4
0402 Resistor 6
0402 Resistor 2
0402 Resistor 1
0402 Resistor 2
0402 Resistor 3
0402 Resistor 1
0402 Resistor 1
0402 Resistor 5
0402 Resistor 7
0402 Resistor 1
0402 Resistor 2
0402 Resistor 1
560R R813. R814
5K6 R541
47K R301. R549. R833. R841. R842
4K7 R302. R371. R372. R655. R656. R671.
R673
51K R388
3K3 R437. R451. R657
3K9 R653
470R R262
36K R183. R857
390K R546
39K R377. R387
2K2 R715. R716
30K R185. R431. R529. R861
33K R378. R434. R441. R442. R446. R448
22K R405. R674
27K R866
2K R542
1M8 R443. R447
200K R831
220K R539
1M R182. R537. R662
0402 Resistor 1
0402 Resistor 1
0402 Resistor 1
0402 Resistor 2
0402 Resistor 1
1206 Resistor 3
1206 Resistor 1
0805 Pol-Cap 1
0805 Pol-Cap 1
0805 Pol-Cap 4
A Pol-Cap 2
B Pol-Cap 1
0402 Ind 2
0603 G-LED 1
0603 R-LED 1
USM Diode 1
USM Diode 1
ESM Transistor 2
ESM Transistor 1
ESM Transistor 1
USM Transistor 1
TSM Transistor 1
SO8 IC 1
SO8 IC 1
SO8 IC 1
LM358 U661
2SB624 T301
24C32 U821
CHORD U511
DTA114EE T201
DTC114EE T181
MRF497 T421
1SS372 D422
DAN222 D421
2SK1824 T431. T526
101T L402. L711
GREEN D813
RED D814
2U2F E421
10UF E283. E913
10UF E911
0R39 R171. R172. R173
3K3 L164
1UF E854
6K8 R433
820R R421. R548
82K R528
5K6 R541
680K R406
4U7F E181. E377. E431. C379
SO8 IC 1
SSOP8 IC 1
SSOP16 IC 1
SOT89 IC 1
FX-CS20 Oscillator 1
Var-Res 2
Button 1
Button 1
Button 1
Connectors 1
Footprint Name Quantity
0402 Capacitance 3
0402
Capacitance 8
0402
Capacitance 13
Capacitance 20
0P5 C247. C336. C352
100P C275. C313. C314. C315. C317. C343.
C384. C643
102P
C128. C137. C191. C205. C232. C248.
C256. C281. C312. C316. C318. C328.
C418
103P
C113. C143. C146. C186. C219. C231.
C250. C251. C254. C258. C280. C321.
C354. C382. C383. C391. C413. C645.
Bottom
Designators
SCR SW713
JP18 JP811
50K RV351. RV378
MONI SW711
PTT SW712
FX128 U512
5A U911
3M58HZ CR537
LM4558 U411
LM2904V U161
Comment
0402
0402
Capacitance 22
0402 Capacitance 1
0402 Capacitance 6
0402 Capacitance 7
0402 Capacitance 4
0402 Capacitance 1
0402 Capacitance 2
0402 Capacitance 2
0402 Capacitance 2
0402 Capacitance 3
0402 Capacitance 1
0402 Capacitance 1
0402 Capacitance 3
0402 Capacitance 1
0402 Capacitance 2
0402 Capacitance 2
0402 Capacitance 3
0402 Capacitance 3
C854. C885
104P
C103. C145. C188. C264. C273. C274.
C278. C282. C283. C284. C319. C326.
C395. C416. C417. C602. C604. C642.
C850. C851. C855. R644
105P C138
10P C333. C351. C355. C359. R357. VC241
12P C154. C155. C161. C214. C240. C335.
C358
15P C115. C166. C811. C882
18P C211
1P C332. C349
1P5 C334. VC220
20P C123. C125
220P C286. C387. C853
222P C871
223P C345
22P C167. C168. C393
25P C212
27P C276. C287
330P C381. C385
33P C133. C272. C346
3P C238. C246. C255
20 08
年7月14日 6
页
0402 Capacitance 29
0402 Capacitance 1
0402 Capacitance 1
0402 Capacitance 3
0402 Capacitance 1
0402 Capacitance 2
0402 Capacitance 1
0402 Capacitance 4
0402 Capacitance 1
0402 Capacitance 1
0603 Capacitance 1
0603 Capacitance 2
0603 Capacitance 2
0603 Capacitance 1
0603 Capacitance 2
0603 Capacitance 1
0603 Capacitance 1
470P
C104. C111. C112. C114. C121. C122.
C127. C131. C134. C157. C206. C218.
C233. C285. C288. C320. C323. C324.
C325. C327. C342. C394. C396. C398.
C419. C452. C601. C886. C904
472P C872
474P C646
47P C329. C380. C852
56P C386
5P C348. C397
683P C640
6P C135. C136. C169. C392
8P C217
9P VC243
104P L333
105P C883. C901
10P C163. C164
13P C165
470P C162. L133
47P C156
6P C151
104 0805 Capacitance C81 1
0805 Capacitance 1
0805 Capacitance 1
1008 Capacitance 1
0402 Resistor 4
0402 Resistor 9
0402 Resistor 5
0402 Resistor 11
0402 Resistor 3
0402 Resistor 4
0402 Resistor 2
0402 Resistor 2
0402 Resistor 2
0402 Resistor 2
0402 Resistor 9
0402 Resistor 1
0402 Resistor 1
0402 Resistor 1
0402 Resistor 2
0402 Resistor 2
104P C817
47P C152
6P C331
4P C347
0R R363. R364. R400. R886
100K R226. R229. R240. R258. R322. R342.
R355. R883. R885
100R R321. R326. R391. R397. R714
10K R189. R256. R278. R361. R380. R382.
R416. R601. R718. R907. R908
10R R124. R393. C644
120K R113. R187. R261. R392
150K R128. R186
150R R362. R642
15K R111. R328
180K R257. R286
1K R242. R264. R341. R365. R902. R903.
R904. R905. R906
1K2 R276
1K5 R115
1K8 R402
1M R417. R856
200K R227. R230
0402 Resistor 1
0402 Resistor 5
0402 Resistor 1
0402 Resistor 4
0402 Resistor 1
0402 Resistor 2
0402 Resistor 4
0402 Resistor 1
0402 Resistor 2
0402 Resistor 2
0402 Resistor 1
0402 Resistor 1
0402 Resistor 8
0402 Resistor 1
0402 Resistor 2
0402 Resistor 4
0402 Resistor 5
0402 Resistor 3
0402 Resistor 4
0402 Resistor 1
0402 Resistor 1
220K R184
220R R228. R239. R335. R351. R389
22K R333
22R R114. R121. R136. R343
270K R285
270R R157. R158
2K2 R366. R367. R613. C641
330K R852
330R R122. C124
33K R854. R871
33R R231
39K R137
3K3 R123. R277. R288. R394. R396. R398.
R399. R873
3K9 R287
470K R646. R853
470R R254. R356. R401. C132
47K R102. R127. R138. R188. R323
47R R126. R252. R312
4K7 R101. R324. R815. R818
560R R368
56K 0402 Resistor R238 1
0402 Resistor 2
0402 Resistor 1
0603 Resistor 2
0603 Resistor 1
0603 Resistor 2
0805 Resistor 3
0805 Pol-Cap 2
0805 Pol-Cap 2
0805 Pol-Cap 1
0805 Pol-Cap 3
A Pol-Cap 1
A Pol-Cap 1
0603 Ind 6
0603 Ind 5
0603 Ind 1
0603 Ind 2
0603 Ind 1
0805 Ind 1
0603 Ind 2
0603 Ind 2
0805 Ind 3
0805 Ind 5
0805 Ind 2
0805 Ind 3
56K R238
5K6 R395. R872
680K R381
0R L335. R645
47R R125
4K7 L329. L346
0R R135. R153. L253
0U1F E364. E367
1UF E319. E646
2U2F E363
4U7F E312. E325. E401
1UF E871
10UF E642
100NH L112. L122. L312. L320. L324. L386
220NH L231. L351. L355. L391. L392
390NH L123
470NH L381. L383
560NH L382
220NHD L157
6U8H L328. L345
R12 L216. L326. L331
68NH L212. L213. L224. L227. L288
R10 L344. L347
101T L851. L886
101T L132. L142. L901
0805 Ind 1
0.4*1.5mm Coil-Ind 1
0.31*1.3mm Coil-Ind 1
0.4*1.5mm Coil-Ind 2
0.31*1.5mm Coil-Ind 1
0.4*1.5mm Coil-Ind 1
0.4*1.5mm Coil-Ind 1
ESC Diode 4
ESC Diode 2
USC Diode 1
USC Diode 1
USC Diode 4
USM Diode 1
ESM Transistor 1
ESM Transistor 1
ESM Transistor 3
ESM Transistor 6
USM Transistor 2
USM Transistor 1
USM Transistor 2
USM Transistor 1
USV Transistor 1
R25 T392
UMC4 T327
2SC5108(Y) T391
KTC4082 T261. T381
DTC114EE T102. T191. T611. T646. T813. T814
2SC4226 T111. T355
2SJ243 T326
DTA114EE T275. T401. T815
MA742 D411
2SC4617 T321
1SV220 D332
B9 D328. D329. D345. D346
MA2S111 D324. D325
1SS314 D156
8T L143
HSC277 D111. D211. D212. D213
6T L162
4T L131
5T L161. L163
2R2 L252
3T L165
6T L211
TSM Transistor 2
TSM Transistor 2
TSV Transistor 1
SOT89 Transistor 1
SOT89 Transistor 1
SOT89 Transistor 1
SOT343 Transistor 2
HWSON-2 Transistor 1
QFP44 IC 1
SSOP10 IC 1
SSOP16 IC 1
SSOP20 IC 1
Oscillator 1
Oscillator 1
Filters 1
Battery 1
450K FL261
BAT BAT111
14M4HZ CR311
32K768 CR881
TA31136F U261
LMX2332 U311
MCU U811
TA7368F U641
3SK1212 T231. T251
3SK4037 T141
2SK1588 T645
2SK3078 T131
R3111N451 T881
2SC4988 T121
2SB624 T103. T602
2SK508NV T333. T341
EXPLODED VIEW
1
2
3 4 5 6
7 8
9 10
11 12
13 14
15 17 16
18
20 19
21
22
23
24 A
A B B
B B
C C
C
C C C C
C
10K
150K 150K
470R 470R
VCC
VCC
DTC114EE(24) DTC114EE(24)
103P LED(G)
LED(R) Vin
GND
Vout
5A 5V
22μF 22μF
103P VCC
47K 2SB624(BV4)5V
5T
47K 103P 103P
5V 5R
103P 10UF 10UF
2SB624(BV4)
104P LCD Driver
20 21 22 23
. . . . . .
30 31 32
33
34
35
29
. . . . .
. . . . .
46
47
48
1
2 3 4
5 6
7 8 9
10 11 12 13 14 15 16 17 18 19
S0 S1 S2 S13 S14 S15
S16 S17 S18 S19
S25 S26 S27 S28
/CS
/RD /WR DATA
VSS OSCO
OSCI VLCD VDD
/IRQ BI /BI C0 C1 C2 C3 S29
S30
S31
47K 1K 100P 1K
100P 100P
1K
104P 104P
LCD
C0 C1 C2 C3 S0 S1 S2 S29 S30 S31. . . .
. . . . .
1 2 3 4 5 6 7 . 34 35 36
1K 1K ANT
14P 1UH
13P
8P 6P
22P
30P
15P 470P
22P
0.31*1.5*6T
18P
8P
X X
100K
102P 220R 12P X
3P 103P
3P
9P 9P
220nH()叠层 X 103P220R
100R
470P
X 470R
38M850 38M850
9P 470R
2SC2714(QY)
120K 1K
33P 104P
100R
27P
2K
470P
27P 3K9 470P 470P 470K
104P 450K X
X
104P
104P 10K
3K3 100R
103P 470P
5R 5R
100P
12P
X
12P
47P 6P
X
5T
270R
220NH(叠层)
470P
270R
470P 103P 104P
22R 102P
27P
1R0J()绕线101T()磁珠
470P 105P
27NH(叠层)
47R
20P 10R 20P
100NH()叠层
2SC3357(RF) 470P 330R
3K9
1K5 15P
2SC4226(R25)
100NH()叠层
X
120K
470P 103P
470P 5T
HVU131
104P 470P
TP
1 2 3 4 5 6 7 89101112131415
16
TA31136FN X
470K
TP 10UF
470P
47R 68NH(绕线)
68NH()绕线 68NH()绕线 68NH()绕线
X 15P
R56()绕线
104P
222P
4K7
RQA0002
2SK3078(UW)
10T
TP 3SK318(YK-)
0.4*1.5*5T0.4*1.5*6T0.4*1.5*5T
3SK318(YK-)
101T()磁珠
470P
47K 39K 102P 102P47K 150K
5V
LED LED LED
LED LED LED
120R
120R 120R
VCC
U8
VHF
LED LED
120R
DTC114EE(24) DTC114EE(24)
1N4148 1N4148
三色背光灯 键盘灯
10K 47P
2SC2714(QY)
680K 220NH 220NH
103P 103P
5R
100R 82P
103P
VCC1
150K(B)
150K(B)
150K(B) 100P
470P 150K(B)
150K(B) 150K(B)
5T 30K 470P
47K 220K
68K 103P
1M 10K 102P
LM2904(1)
2 3
1 6
5 7
4 8 VCC
103P 0R39
0R39
0R39 VCC
10UF
150K LM2904(2) X
DTC114EE
DTC114EE
47K P67
PB6 PB7 PB5
P70 P71
PC0 BACK_LIGHT1 PC1 BACK_LIGHT2
P90
P91
P92
P93
P94
P64
P96 P95 P77
P63
103P HSC277 HSC277
0R 25P
68NH 12P R12()绕线 470R
3P
10K
15K
47R 0R
0R 33R
0P5
50C24
APC
SQ
XX
R33(绕线) 103P
47K 47K 47K 5V
47K 47K
1N4148
1N4148
1N4148
1N4148
1N4148 MONI
>
*
#1 2 3
4
5 6
7 8
9 0
A B C D
O ● <
ALARM 47K
5V 5C
103P 10UF
2SB624(BV4)
1K 103P
1P5 4K7 222P
10K10μFRXI
103P
104P 0R 5V
AVDD
PLLC AVSS
XIN
XOUT /RESET
15P
15P
32K768 MCU
101T
12
18 19
1 2 3 4 5 6 7
26
27
8
32
9
5V
104P0R 101T
VDD
5V
VSS 220P 220K
RXI
RXO PB5 PB6 PB7 P90 P91 P92 P93 P94 P95 P96 P97 10 2011
21
22 P67
P66
AURX23
24
25 P64
P63
P6229
30
31 P84
P83
P82
34
35P77
P76
36 37 38 39 40 41 42 43 44 P75 P74 P73 P72 P70 P71
PC0 PC1 PC2
28
33 13
14
TONE 17
MICI MICO
15 16
5V
10K 10K 103P 1
2 3
4 5
6 7 8
24C32
BATT
474P
X
10UF
220UF
10UF BAT
5T
VCC
VCC
X
10R
150R 2K2
X 104P
220P 104P 220P
100P 103P
223P 1 2
3 4
5 6
7 8 9 10
TA7368F 2SK1588(NG) DTC114EE(24) DTC114EE(24)
SP JACK SP
100R 8K2
2K2 10K
470K
1K X
473P 332P
680P
103P
2SB624
223P
102P
104P 473P
470P 104P
MIC
470P 5V
2SC4181(L17) 1K
MIC JACK
100R 102P
5V 10K PTT 470R
101T(磁珠)
1K8
680K
100K 820R
100R 10UF
2U2F
5T
18K
1SS372(N9)
100R 3K3
10K 1M8
33K 6K8
2SC4617(BR)
5T
332P
820P10K 1M8
33K 33K
2SC4617(BR)
103P 103P
103P
22K
X50K
SW-VOL
SW-CH 47K
47K VCC
5V TP
1K 1K 1K
103P
VCC11
VP12
CP13
GND4
Fin15
6
7
XIN8
XOUT9
10CLK11 DATA12 STB13 14 15 Fin216 GDN17 CP218 VP219 VCC220
LMX2332
100P 102P
0R
1
23 4
19M2
102P 4U7F
102P 27K
39K
VT VCC
GND FOUT
104P
50K 102P
100P
100P 100P
470RX
R25 100K220NH()叠层
5P
10P
103P
5C
DTA114YE 5V
5K6
104P
104P
2SC4738 270K 5V
MA742
VOX
1K X
X
X
P75 P76 P73
P72
P74 P72
P84
PB6
PB7 P66
TONE
P97
PB6
PB7
X
10P 223P 33K
1K5
22K
30K 4U7F
5T
0R 104P
104P
100K 1K
P74 100NH(磁珠)
FUSE
47UF 1SR154-400 102P 105P
100nH(叠层)
QT/DQT
33K
3K3
1 2
3
48
4558(1)
5 6 7
4558(2)
104P
4K7 47P
4K7 33P 100K 392P
1M
470P 1M
470P 82K
105P
1K
223P 12K
473P 100K
333P 1K
220PN.U.
120P 30K223P47K105P
82K223P
2K
0R 82K
105P
4U7F 1 2 3 4 5 6 7 8910111213141516
FX/MX128
AURX
2SK1824(B1)
5C
1 2 3 4 5 6
7
8 CHORD
2K2 820R
103P103P 100KX
5V
390K
TONE
3M58
P83
P82
104P 102P
120P 220K
102P
472P
103P
273P273P 104P
150P 104P
6K8 X15K X4K7 1K2
4K7 5K610K
N.U.
TX-ANI
PC2
100K 470P
6μ8H(磁珠) K52
5K6
100R
5P
R25 100P 10P 1P 22K
R10(绕线)
4P B9
B9
120K
R25 220nH()叠层
100R
6P 22P
470P 220nH()叠层 470P10R 5C
HSC277HSC277 3K3 1SV220 0R
27P 5P
6μ8H(磁珠)
R12(绕线)
6P B9
B9
47P R10(绕线)
22R
2SJ243 UMC4
1K 5R
220R
220nH()叠层
0P5
5C 0P5
X
3K3 470P
2SC4617(BR)
4K7 470P
MA2S111
470P
5C1
5C
4U7F 560R2K2 0μ1F
2K2
2μ2F0μ1F
1K
0R
3K3
100R RVCO
TVCO
RX_VCO
TP 150R
0P51P5
101T()磁珠
TX_VCO
100K 100R
470P
DC SW
X
0R
104P 103P 470P
104P 470P
K52
10P
220R
0R
15K
100P
10P
R12(绕线)
3K3 X
100nH 10K
5P 103P
103P
5C
103P CLK
DATA
333P
1K
1K
XX
VRX
103P 103P
103P
470P 100K3K9
4K7 P63
5
67 LM358
12 3
4 8
LM358
10K 104P150K
104P 4K7
10K 10K 3K3 VRX
X
1K 10K
AURX
47R 102P
4K7
103P
102P
470P 22R
330R
X
X
5P 6P 470P
200K100K X
102P
56K
100K 180K 100K 0R 0R
1M 472P 100P
2K7
DTA114EE
N/W
104P 104P 1K5
DTC114EE(24) 100R 470P
N/W
X
472P22K
RX-ANI 103P
82P
4K7
390NH()磁珠 470P
0.4*1.2*3T
C883 105P
R883 100K R885 100K
C452 470P in
Gnd
out T881 R3111N451C-TR-FA
D324 MA2S11
