DJ-A10 - Maas Elektronik
Contents
1. Pn E OS IK z d I REXX RENT MMAIAAA 1 sj 8 1 33M x 1 BEES REI M6 2 7 7 2 DANSJE RESET CI Bis 3 3 E jse NA SOR TOK m 4 5 15 4 10 12 20 STIZISE 224 1200 TOET SED 3 MCN e IEMDD 3 MOD gt 123 S 1016 REE amp 1 sj 8 528854553 5 SEE gt gt PI 2 7 2 R27 PIL 3 6 6 3 10K 5 5 6 za HSSARAAR 3 PIO 4 5 5 4 88086588 8 Pal 1 we 5 898885958 DICIAITE 5 B 2 5 s 3 SUB Font S 62. woos E 18 EA on TO asr iso M 27 i ke Barm MATE ANTENNA SW wa ao cos 1 A ish in PN isn m WA IstF3885MHz aus ud os daw EM EM 106 1520 ka j ess ess css Mx Las 3 IRD E E oP 3 yes on vor css sn e E mo ia TE sis pusE wear WOT SNI ou n 1 gt t Lt EO Ad EE Em 115 gili 2 Xe Tapen E E TXHNAL 8 ev I BAT 524 sos 3 p 3 x NOISE Sie pw D so cm cm l 10 D Vip 3540 sgt x E ii bi lm SEE II E an da cus wm om dr des lu lo Tas E S l wo use V ase me we ar D We 5 1 10 3 sowe x 5 s hon B Drama cm E Las ri E dew
3. 24 DJ A10 SCHEMATIC DIAGRAM
4. CONTROLUNIT TX RXUNIT POWER SW DEV BATTI 0515 0520 SURG 3360 MOD 5 2 4226 003 lls 500 eed 1152055850 TAN I Puc F CONT LOOP FILTER l4 5C 4 P62 0517 800 lt JOV2S14EX2 LMX2336LTM 1 MEA Poz 4 ex 501 i 5E 705205 50 P63 0508 SR DIA ETT 50 143ZE P60 WIDE NARR SW 19 200MHz DC sw 450ML 0503 0509 146 500 14E 9502 At or Q512 Be 115205533 56 114EE 2564082 J MULTIPLY i 3 3V REG 7200 P61 07 012 517516 14 58 KEY BACK LIGHT KEY MATRIX U503 TA31136FN ts 38 400MHz LCD BACK LIGHT ZS VS NS Q510 N LWA VS DTA DC sw x AEN 114EE 4 i e DAN222 SW 01 C 11 48 02 m 11 comi 16 EE i 114E LCD UNIT SEGI 40 P 1 SCK SDA e RESET woo S71275F 33M U202 P20 P21 P22 P23 P27 P 64 665 99170 3 3M DECODE Ta BUFFER AMP gt 5813210 U2048 2 2 SDA LM2904 lt 03 AD4C64RM 8 PROM SCL LI MUSIC Audio 0208 29427 POO P11 P15 P25 P61 E 001 P12 P16 P26 062 par 2 tT PO2 P13 P17 53 P63 APC 1 P10 814 P24 P60 P77 XD _ rd 5T lm M MUSIC SH NA 070 RXD P33 P71 0201 0200 5200 5201 5204 5203 073 072 GREEN RX RED TX FP1 Fp2 EMERGENCY CHANNEL SW d a 29 DJ A10 PC board views
5. RF BUFF AMP ANT SW 0501 0502 HSC277X2 wo 2 768 I 1900 FM MODULE lig RDA5802 1ST MIXER AMP 0506 3SK318 0509 0510 H C376 SR Q516 25 4226 0518 2304226 5 0519 PAD 2SK1824 BAND XF500 XF501 MCF Q507 EA 3SK318 38 850MHz FM AUDIO 0504 2SC4617 RIPPLEFILTER IFAMP Q511 2SC4082 5R UART 0202 0206 T B 33 155372 Q214 3v DICllATE 666 W200 POWER SW MIC PTT DET 5202 PTT P73 VOLUME 3 3M 53 DIA144EE 3 3M AMP U204A 1 2 LM2904 BATI 0203 Y luar 203 204 25C1623 MUSIC Audio MOD
6. RXD 7 1 33M SR m c 0 x D 5 T n MC Tol s T 0 5S 1X I6PWB If 162 10 gt Pal T 10K 10K Isp E 163 CH 3M EN 103P TGT 12 4 154 RS 13 res 10K 1201 9 007 166 la ES 00 3 188400 TOT 15 03 dae 103P 1516 VRA ca 16 f 6 5 VSSD 91 SA 10 104P WD 17 1 7 23 p ad oe U 3 34 24 seo 5 19_ 8 si TEI 13 BINTI am 20 PINT EL 275 06 21 DAE AT24CG4ARMIS An I 2 10K gt 100K BO 23 1048 TXD 2 1502 ie 2 Qu 25 1 KI 20 1 Drome gt INI REF TOR H4 EE TEK ms 2 L 19 BIN Ie SRT3210 3 18 INOU ga N 3 3 4 33M 5 7 vs Qoo 6 Denis 1048 104P 41 05 OP EX 7 EZ 1 I Pl 8 u m 9 2 ET 4711 012 EE 5 1 11 IN 12 Ba 88 aa Vou L 26 TEMA uw 5 meld 32768KH II 25 e 53 QS 35205833 237 C64 Co67 7 quo 04 15 x Ras ud DK mm gt B POWERCONIRCL 150K x DTCI4TE id Il RB B3 DTCHAEE w 1 MI 1 il 1554 VOL OM 47 2d 131 bra 24 24 EMD AUR un AFI UHF 3 wt R250 33M VOU TOOR AKT M W200 2 5 ma 2 zor 2 ROS7IONS FE 15 7 08103 002
7. dx MAINO E _ in CONSUE ET grossum boud sn ar p j MI 503 ES gt EM 1 ms i ta lt 1 oe Gel N sc eson T 10 IV m A PH 3 TY a x pm Er e gt ap 2 loo 3 Fi IM m DEDE fe gt has cx rant d ws 3 M so bore p ys sio E mu 29 ine 2 Eu i HI ID INE lk Ist2 38 85MHz Fou Pp gt LEE 2 MI 60 LINE I mr l 1 1 Ju TINE PNE p s c HIS ENE GN PHASE LOCKED N ou 22282 d LOOP SYSTEM D es Tw mus wes Pos EBT 25 SCHEMATIC DIAGRAM 1506
8. 30 DJ A10 PC board views TT niu N 31 DJ A10 DJ A10 PC board views _ O 33 DJ A10 W10 A35 W35 A40 A245 series Mechanical Parts Val Model Antenna Instruction Manual LCD Panel Main Unit LCD Unit DJ A10 EA 211 PS0662 ZDP1002 ZADMA10 ZADLA10 DJ W10 EA 211 PS0789 ZDP1003 ZADMW 10 ZADLW10 DJ A35 EA 218 PS0790 ZDP1004 ZADMA35 ZADLA35 DJ W35 EA 218 PS0791 ZDP1005 ZADMW35 ZADLW35 DJ A40 EA 212 PS0786 ZDP1006 ZADMA40 ZADLA40 DJ A245 EA 213 PS0781 ZDP1007 ZADMA245 ZADLA245 Antenna Val Alert LED Switch ZFG1002 Dial Nut Battery Lock ZAN1000 VR Knob ZFP1003 Speaker ZNK1002 Rear Case Screws Lock Spring ZES1000 ZAA1000 ZFM1000 Switch Cover Rear Case ZFP1002 o ZKB1000 25 2 ZFG1005 Switch Rubber Belt Clip ZFG1004 2 Jack Cover FEE ZFP1000 Battery Screw LCD Display ZAA1002 Battery Spring ZSD1000 LCD Panel LCD Unit val 16key Rubber Battery Screw val ZFG1003 ZAA1003 MAIN Unit Battery val Front Case ZKM1001 34 EBP 87 EBP 88 Rear Chassis Screws ZAA1001 Rear Chassis ZSS1000 ALINCO INC Yodoyabashi Dai bldg 13F
9. fe m G 6 G 6 m 88 2 i AZ amp E 68 BEEF 8 sess a 3 SRER EL 82 IM SE x ELE I y gt 4 E lex skala a B zg ggozad c 8INOO 0085 x 908 588 SINOD 96 g 0685 w lt LNOD 6IDAS Ed Xa sad l WOO s Eed Z 6IDAS Tr 9WOD 8109 rad 9INOO L3 9c 81995 9 1645 3 SNOD Las T sad SANOD al SC 1995 Yr TDAS NOD 9194S gt 98d ae YNOD 91995 St 5035 L EINOD SIDAS Lad 5102 Ic amp SIDAS w TOUS ZNOD 06 amp FIDES TINOD I SOAS 11109 6085 21109 INOD IC IDAS ZNOD 2 9045 0598 4 06 21995 SNOD 6 1995 6EDAS TIDAS NOD GEDAS Ly 61 TIDAS TINOO 05 SOAS SEDES 01995 SINOD SEDAS oF 81 01995 SINOO Is 6DAS LEDAS 6085 gt 91109 2 LEDAS S n uM 6599 9NOD TE MI tf 01995 9095 3085 11949 9 095 Tr 9 8DAS ES 1 TI 1995 8INOO 21929 s 6035 gh 9 er 1995 8INO2 XC IL TIDAS 15085 9085 gt 6NOD 585 2 7095 zr fal 9995 6NOD SS 01
10. during transmission the transceiver is still usable The red LED flashes The battery voltage is low and and a continuous beep the transceiver is not usable to sounds while make calls pressed U201 R204 38 BATT1 ANM P72 C200 I EG Fig 12 7 Key Input Keys and channel selector circuit The signal from the keys and channel selector are directly input to the microprocessor as shown in Figure 13 CHANNEL SW 777 N U201 2 MPU N O e gt gt gt gt amp R 8 a el 8 1 2 3 A L sl sd de Q O Q O 01009 6 4 5 6 B 6 tower EE M1 _ 2 2 9 4 d 7 7 8 9 C IL IL 0409040 QtO Q 777 0 D aL ad O Q 9 9 90 Fig 13 8 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 is always output but turns off when the power is turned off to prevent malfunction of the microprocessor 5C is acommon 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 DJ A10 PARTS
11. 4 4 9 Koraibashi Chuo ku Osaka 541 0043 Japan Phone 81 6 7636 2362 Fax 81 6 6208 3802 E mail export alinco co jp Dealer Distributor Copyright Alinco Inc Osaka Japan 111 FNEH NH
12. R237 SMT RESISTOR 0402 1 10K 5 R238 SMT RESISTOR 0402 1 2 2K 5 R239 R240 SMT RESISTOR 0402 2 10K 5 R241 SMT RESISTOR 0402 1 10K 5 R242 SMT RESISTOR 0402 1 22 5 R243 SMT RESISTOR 0805 1 100R 5 R244 R245 SMT RESISTOR 0402 2 33K 5 R246 SMT RESISTOR 0402 1 150 5 R247 SMT RESISTOR 0402 1 100 5 R248 R249 SMT RESISTOR 0402 2 1K 5 R250 R253 SMT RESISTOR 0402 4 4 7 5 R255 SMT RESISTOR 0402 1 OR R256 SMT RESISTOR 0402 1 120K 5 R257 SMT RESISTOR 0402 1 NO USE R258 SMT RESISTOR 0402 1 27 5 R259 SMT RESISTOR 0402 1 NO USE R260 SMT RESISTOR 0402 1 100 5 R261 SMT RESISTOR 0402 1 390 5 R262 SMT RESISTOR 0402 1 200K 5 R263 SMT RESISTOR 0402 1 51 5 R264 SMT RESISTOR 0402 1 100 5 R265 SMT RESISTOR 0402 1 OR R266 SMT RESISTOR 0402 1 NO USE 16 DJ A10 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification R267 SMT RESISTOR 0402 1 1 8M 5 R268 SMT RESISTOR 0402 1 6 8 5 R269 SMT RESISTOR 0402 1 3 3K 5 R270 SMT RESISTOR 0402 1 300K 5 R271 SMT RESISTOR 0402 1 10K 5 R272 SMT RESISTOR 0402 1 470R 5 R273 R275 SMT RESISTOR 0402 3 10K 5 R276 SMT RESISTOR 0402 1 NO USE R277 SMT RESISTOR 0402 1 27 5 R278 SMT RESISTOR 0402 1 10K 5 R500 SMT RESISTOR 0402 1 47 5 R501 SMT RESISTOR 0402 1 120K 5 R502 R507 SMT RESISTOR 0402 6 150K 1 R508 SMT RESISTOR 0402 1 560R 5 R509 R510 S
13. R591 APC U201 U502A U502B 1 2 2 2 Fig 9 4 4 APC Circuit The APC circuit always monitors the current flowing through the RF power amplifier 0505 and keeps constant current The voltage drop at R589 R590 and R591 is caused by the current flowing through the RF power amplifier and this voltage is applied to the differential amplifier U502 1 2 U502 2 2 compares the output voltage of U502 1 2 with the reference voltage from U201 The output of 502 2 2 controls the VG of the RF power amplifier Drive amplifier and Pre Drive amplifier to make both voltages the same The change of power high low is carried out by the change of the reference voltage See Fig 9 5 Display Circuit The CPU U201 controls the display LCD and LEDs When power is on the LCD driver will use the P36 P37 lines to control the LCD illumination D5 and key backlight LEDs D7 D12 The LCD driver U2 and CPU U201 communicate through the P40 P41 P42 P43 P44 P45 lines When the transceiver is busy P66 line becomes high impedance and the green LED 0201 lights in transmit mode the P67 line becomes high impedance and the red LED D200 lights See Fig 10 DS1 P40 P41 P42 P43 U206 P44 P45 em SEG1 SEG40 MPU CY LCD driver P36 P37 COM1 COM16 m Es 05 0201 2 2 RX LED 1
14. 0402 1 120K 5 R561 R562 SMT RESISTOR 0402 2 68K 5 R563 SMT RESISTOR 0402 1 47K 5 R564 SMT RESISTOR 0402 1 100 5 R565 SMT RESISTOR 0402 1 330 5 DJ A10 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification R566 R567 SMT RESISTOR 0402 2 1 2 5 R568 SMT RESISTOR 0402 1 6 8 5 R569 R571 SMT RESISTOR 0402 3 3 3 5 R572 SMT RESISTOR 0603 1 A7R15 R573 SMT RESISTOR 0402 1 47R 5 R574 SMT RESISTOR 0805 1 120R 5 R575 R579 SMT RESISTOR 0402 5 1M 5 R580 R581 SMT RESISTOR 0805 2 10R 5 R582 SMT RESISTOR 0402 1 22R 5 R583 SMT RESISTOR 0402 1 27K 5 R584 SMT RESISTOR 0402 1 82K 5 R585 SMT RESISTOR 0402 1 10R 5 R586 SMT RESISTOR 0402 1 820R 5 R587 SMT RESISTOR 0402 1 560R 5 R588 SMT RESISTOR 0402 1 390R 5 R589 R591 SMT RESISTOR 1206 3 0 36R 5 R592 SMT RESISTOR 0402 1 220K 5 R593 SMT RESISTOR 0402 1 300K 5 R594 SMT RESISTOR 0402 1 180K 5 R595 SMT RESISTOR 0402 1 3 9K 5 R596 SMT RESISTOR 0402 1 1 5 5 R597 SMT RESISTOR 0402 1 180R 5 R598 SMT RESISTOR 0402 1 330R 5 R599 SMT RESISTOR 0402 1 1 2K 5 R600 SMT RESISTOR 0402 1 OR R601 SMT RESISTOR 0402 1 100R 5 R602 R603 SMT RESISTOR 0402 2 2 7K 5 R604 SMT RESISTOR 0402 1 4 7K 5 19 DJ A10 PARTS LIST Ref No Parts No
15. 0603 2 105 10 50V C557 SMT CAPACITOR 0603 1 104410 50V C558 C560 SMT CAPACITOR 0402 3 104 10 50V C561 SMT CAPACITOR 0402 1 102 10 50V C562 C565 SMT CAPACITOR 0402 4 104 10 50V C566 SMT CAPACITOR 0402 1 224 10 50V C567 SMT CAPACITOR 0805 1 102 10 50V C568 SMT CAPACITOR 0603 1 NO USE C569 SMT CAPACITOR 0603 1 2P 0 1P 50V C570 SMT CAPACITOR 0603 1 56P 5 50V 11 DJ A10 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification C571 SMT CAPACITOR 0402 1 1 5P 0 1P 50V C572 SMT CAPACITOR 0603 1 6P 0 1P 50V C573 SMT CAPACITOR 0603 1 18P 5 50V C574 SMT CAPACITOR 0402 1 8P 0 25P 50V C575 C576 SMT CAPACITOR 0402 2 2P 0 1P 50V C577 C579 SMT CAPACITOR 0402 3 NO USE C580 C581 SMT CAPACITOR 0402 2 220 5 50V C582 SMT CAPACITOR 0805 1 475 10 50V C583 SMT CAPACITOR 0805 1 225 10 50V C584 SMT CAPACITOR 0402 1 102 10 50V C585 SMT CAPACITOR 0402 1 100P 5 50V C586 SMT CAPACITOR 0402 1 33P 5 50V C587 SMT CAPACITOR 0402 1 100 5 50V C588 SMT CAPACITOR 0402 1 102 10 50V C589 C591 SMT CAPACITOR 0402 3 100 5 50V C592 SMT CAPACITOR 0603 1 30P 5 50V C593 SMT CAPACITOR 0603 1 102 10 50V C594 C596 SMT CAPACITOR 0402 3 470P 10 50V C597 SMT CAPACITOR 0402 1 102 10 50V C598 SMT CAPACITOR 0402 1 103 10 50V C599 SMT CAPACITOR 0402 1 3P 0 1P 50V C600 SMT CAPACITOR 0402 1 102 10 50V C601 SMT CAPACITOR 0402 1
16. 5535 095 SDAS 1585 095 I 2 SOAS ONOI 96 6 VIDAS aa TEDAS 998 2 TINOD SIDAS CIS TEDAS OF f al TOSS TINOD 15 8 91995 TEAS 6085 UWOD 91085 TEDAS 6E 6035 ZINOD 86 L 91045 0085 2998 11 09 LIDAS s DAS se 01 2095 ETINOD 65 gt 9 LIDAS 3 6045 1035 FINOO SIDHS GDAS 6 AS FINOD 09 31045 SOAS 9IWOO SINOD 6IDAS SOAS 96 gt 4 9IINOO SINOD 19 EM gt 6IDAS ZDIS SINOD 9IINOO 0035 1995 SE L SINOD 9IINOO 9 COEN 9095 HINOD WOES ong 1794S 92045 YE 9 DAS 9 KARBADRANRSA C 1095 DAS te 2220 RO c EINOD GEDAS 9 PONS CIS T 0915 T voas n Anna dv 7095 TE Y UWOD OAS TIANOD Te ES TINOD EES E 0003 esee eene xe eee DAS 6 I 6103 SEG38 SEG37 SEG36 SEG35 SEG34 SEG33 SEG32 SEG31 SEG30 SEG29 SEG28 SEG27 SEG26 SEG25 SEG24 SEG23 27 SCHEMATIC DIAGRAM U900 20 19 AVDD GND RFGND LOUT C900 L901 11 LNAP ROUT GND GND GND DVDD m E o o gt RDA5802 R900 se FM ENABLE Y900 FM SCIK L 2 768KHz FM SDIO 0907 103P R903 OSC32 768K IK FM AUDIO L C903 104P 28 DJ A10 136 174 MHz BLOCK DIAGRAM AD A10 LPF ANT SW 0506 lt
17. Description of item Size LxW mm Qty Specification R605 SMT RESISTOR 0402 1 6 8 5 R606 SMT RESISTOR 0402 1 8 2 5 R607 R610 SMT RESISTOR 0402 4 NO USE R900 SMT RESISTOR 0402 1 1K 5 R903 SMT RESISTOR 0402 1 NO USE RP200 RP201 SMT RESISTOR ARRAY 4D03 2 10 4 RP202 RP203 SMT RESISTOR ARRAY 4D03 2 5 1K X4 RP204 SMT RESISTOR ARRAY 4003 1 1 4 RP205 SMT RESISTOR ARRAY 4D03 1 47KX4 RP500 SMT RESISTOR ARRAY 4D03 1 1 4 D200 ZXL1003 SMT LIGHTED DIODE 0603 1 RED D201 ZXL1002 SMT LIGHTED DIODE 0603 1 GREEN D202 SMT DIODE SC 70 1 1SS372 D203 ZXL1004 LIGHTED DIODE DIP 2 1 WHITE D204 SMT RESISTOR 0402 1 OR D206 SMT DIODE SC 75 1 DA221 D207 SMT DIODE SC 79 1 1SS400 D500 D505 SMT DIODE SC 79 6 HSC277 D506 SMT DIODE 1206 1 HSK277 D507 D510 SMT VARIABLE CAPACITANCE DIODE SC 79 4 HVC376 D511 SMT VARIABLE CAPACITANCE DIODE 0603 1 NO USE D512 SMT NTC RESISTOR 0603 1 220 5 0513 SMT ZENER DIODE 0805 1 NO USE D514 SMT DIODE 0603 1 1 400 0515 SMT VARIABLE CAPACITANCE DIODE 0805 1 1SV214 D516 D517 SMT VARIABLE CAPACITANCE DIODE 0603 2 JDV2S14E D518 SMT DIODE 0603 1 1SS400 D519 SMT DIODE SC 79 1 HSC277 20 DJ A10 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification Q200 SMT DIGITAL TRANSISTOR EMT3 1 DTC144TE Q201 SMT TRANSISTOR SC 59 1 2SB1132 Q202 SMT DIGITAL TRANSISTOR EMT3 1 DTC144EE Q203 SMT DIG
18. IF AMP stow tos gt D Sous 2 5 gt m idcm Ge x s 8 AL ar ws 00 se oo Flour Pius so 2 lee I gt E E hie oN M Bar parr I Hs Te Sy A I Loss Low E m hw qe i es Senes d TDRVE am x 0 122 4 fac s x Breve chess Lew BSF ECUE z EE hu L 008 8 DN UE bus Han 10 ir 5 115 E L z 2 3 jak des 5 5 10 D od gt p Ds M jax 8 n MX mm Bree Law red amal E EM pon or lt Son m 1 T I x e cu Los OI E psor Wer on EM 3 L hor i ke sn ac Ed mal 2nd IF 450KHz M ui ke fous D 7 lt gt me NS ls NN oes ss disa DANE i IX ws pan hase lt 1 H peo as me N L 42 be Eos Ve ya nee jsa VERON sas on ENHE TONI Toya eee t cm x
19. Parts No Description of item Size LxW mm Qty Specification 500 503 SMT TANTALUM A type 4 10uF 20 10V E504 SMT TANTALUM CAPACITOR A type 1 4 7uF 20 10V E505 E506 SMT TANTALUM CAPACITOR A type 2 0 22uF 20 35V E507 SMT TANTALUM CAPACITOR A type 1 10uF 20 16V R200 SMT RESISTOR 0402 1 5 1 5 R201 SMT RESISTOR 0402 1 47 5 R202 SMT RESISTOR 0402 1 100 5 R203 SMT RESISTOR 0402 1 51K 1 R204 SMT RESISTOR 0402 1 150K 1 R205 SMT RESISTOR 0402 1 560R 5 R206 SMT RESISTOR 0402 1 1K 5 R207 SMT RESISTOR 0402 1 100R 5 R208 SMT RESISTOR 0402 1 47K 5 R209 SMT RESISTOR 0603 1 NO USE R211 SMT RESISTOR 0402 1 100K 5 R212 SMT RESISTOR 0402 1 10K 5 R213 SMT RESISTOR 0402 1 560K 5 R214 SMT RESISTOR 0402 1 NO USE R215 SMT RESISTOR 0402 1 470K 5 R216 SMT RESISTOR 0402 1 100R 5 R217 R218 SMT RESISTOR 0402 2 220R 5 R219 SMT RESISTOR 0603 1 56R 5 R220 SMT RESISTOR 0402 1 100K 5 R221 R222 SMT RESISTOR 0402 2 10K 5 R223 SMT RESISTOR 0402 1 100K 5 R224 SMT RESISTOR 0603 1 22R 5 R225 SMT RESISTOR 0402 1 47 5 R226 R227 SMT RESISTOR 0402 2 10K 5 15 DJ A10 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification R228 SMT RESISTOR 0402 1 8 2K 5 R229 R233 SMT RESISTOR 0402 5 10K 5 R234 SMT RESISTOR 0402 1 22K 5 R235 SMT RESISTOR 0402 1 1K 5 R236 SMT RESISTOR 0402 1 330K 5
20. squelch results See Fig 5 R5594 2 6 2 2 High speed data DTMF The DTMF input signal from the FM IC goes to pin 18 of U202 The signal is demodulated by DTMF demodulator in U202 The demodulated data goes to the MPU for processing See Fig 5 U202 DTMF decoder A band FM IF IC 0503 LS200 E sd 0201 0205 0206 020 SW AF U204A 1 2 0205 AF PA SP AF signal 98 J201 P20 P21 P22 P23 P64 P65 P70 DEMOD LNOUT 92 1 SP MUTE Fig 5 DJ A10 CIRCUIT DESCRIPTION 3 PLL frequency synthesizer The PLL circuit generates the first local oscillator signal for reception and the RF signal for transmission 3 1 PLL circuit A reference frequency of 5 kHz or 6 25 kHz is produced by dividing the 19 20 MHz reference frequency of the TCXO X500 with PLL IC U504 Comparison frequency is produced by amplifying VCO output with an RF amplifier Q520 and dividing it with the PLL IC The PLL synthesizer with 5 kHz and 6 25 kHz step is configured by comparing phases of the reference frequency and comparison frequency The phase difference between reference frequency and comparison frequency passes through a charge pump in the PLL IC then ripples are removed with a loop filter with low range passing characteristics to produce VCO control voltage lock voltage See Fig 6 3 2 VCO circuit The VCO produces a desire
21. to tune to the receive frequency See Fig 2 2 2 First Mixer The received signal passing through the band pass filter L522 is mixed with the first local signal generated by the VCO by the first mixer Q507 to produce a first IF signal 38 85 MHz Upper heterodyne The first IF signal passes through a MCF Monolithic crystal filter XF500 and XF501 to remove unwanted components The first IF signal passing through the MCF XF500 and XF501 is amplified by an IF amplifier Q511 and the resulting signal enters the FM IC U503 ANT D501 D502 RF AMP MIXER IFAMP 0506 0506 0507 XF500 XF501 Q511 ANTSw Af 2 4 VFO 1st Local OSC PLL CF500 Tuningvoltage VCO a l U204A AFAMP IF MIX DET U201 AFPA AMP 53 MPU 1205 38 40MH ap X500 0512 2 TCXO 19 200MHz MULTIPLY 2nd Local OSC Fig 2 2 3 IF Amplifier Circuit The first IF signal 38 85 MHz amplified by the IF amplifier Q511 and the second IF signal 38 40 MHz generated by tripling the 19 200 MHz reference oscillator frequency of the TCXO X500 by Q512 are mixed in the FM IC to produce a second IF signal 450 Lower heterodyne The second IF signal passes through a ceramic filter CF500 to remove unwanted components The second IF signal passing thro
22. 0 50V C222 SMT CAPACITOR 0805 1 106 10 50V C223 SMT CAPACITOR 0402 1 224 10 50V C224 SMT CAPACITOR 0603 1 105 10 50V C225 SMT CAPACITOR 0402 1 NO USE C226 SMT CAPACITOR 0603 1 105 10 50V C227 SMT CAPACITOR 0603 1 104 10 50V C228 C233 SMT CAPACITOR 0402 6 104 10 50V C234 SMT CAPACITOR 0603 1 224 10 50V C235 C237 SMT CAPACITOR 0402 3 104 10 50V C238 SMT CAPACITOR 0402 1 332 5 50V C239 SMT CAPACITOR 0402 1 NO USE C240 SMT CAPACITOR 0402 1 104 10 50V C241 C243 SMT CAPACITOR 0402 3 224 10 50V C244 C245 SMT CAPACITOR 0402 2 104 10 50V C246 SMT CAPACITOR 0402 1 273 10 50V C247 C248 SMT CAPACITOR 0402 2 20P 5 50V C249 SMT CAPACITOR 0402 1 NO USE C250 SMT CAPACITOR 0402 1 120P 5 50V DJ A10 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification C251 SMT CAPACITOR 0603 1 105 10 50V C252 SMT CAPACITOR 0402 1 47 5 50V C253 SMT CAPACITOR 0402 1 56 5 50V C254 SMT CAPACITOR 0402 1 104 10 50V C255 SMT CAPACITOR 0805 1 225 10 50V C256 SMT CAPACITOR 0805 1 475 10 50V C257 C258 SMT CAPACITOR 0805 2 225 10 50V C259 C260 SMT CAPACITOR 0402 2 100P 5 50V C261 SMT RESISTOR 0402 1 100R 5 C262 SMT CAPACITOR 0603 1 103 10 50V C263 SMT CAPACITOR 0603 1 104 10 50V C264 SMT CAPACITOR 0402 1 30 5 50V C265 SMT CAPACITOR 0402 1 102 5 50V C266 SMT CAPACITOR 0402 1 102 10 50V C267 SMT CAPACITOR
23. 02 1 7P 0 1P 50V 13 DJ A10 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification C641 SMT CAPACITOR 0402 1 36P 5 50V C642 C645 SMT CAPACITOR 0402 4 12P 5 50V C646 SMT CAPACITOR 0402 1 18P 5 50V C647 SMT CAPACITOR 0402 1 3P 0 1P 50V C648 SMT CAPACITOR 0402 1 NO USE C649 SMT CAPACITOR 0402 1 2P 0 1P 50V C650 C651 SMT CAPACITOR 0402 2 24 5 50V C652 SMT CAPACITOR 0603 1 150P 5 50V C653 SMT CAPACITOR 0402 1 47 5 50V C654 SMT CAPACITOR 0402 1 82P 5 50V C655 C657 SMT CAPACITOR 0402 3 1 0 1 50V C658 SMT CAPACITOR 0402 1 22 5 50V C659 SMT CAPACITOR 0402 1 30 5 50V C660 SMT CAPACITOR 0402 1 47 5 50V C661 SMT CAPACITOR 0402 1 27 5 50V C662 SMT CAPACITOR 0402 1 22 5 50V C663 SMT CAPACITOR 0402 1 30 5 50V C664 SMT CAPACITOR 0402 1 10P 0 25P 50V C665 SMT CAPACITOR 0402 1 102 10 50V C666 SMT CAPACITOR 0402 1 NO USE C667 SMT CAPACITOR 0402 1 1 0 1 50V C900 SMT CAPACITOR 0402 1 102 10 50V C901 SMT CAPACITOR 0402 1 103 10 50V C903 SMT CAPACITOR 0402 1 104410 50V C904 SMT CAPACITOR 0402 1 15 5 50V C907 SMT CAPACITOR 0402 1 NO USE E200 SMT TANTALUM CAPACITOR A type 1 10uF 20 10V E205 SMT TANTALUM CAPACITOR A type 1 22uF 20 6 3V 14 DJ A10 PARTS LIST Ref No
24. 0402 1 15P 5 50V C268 SMT CAPACITOR 0402 1 470 5 50V C269 SMT CAPACITOR 0402 1 272 5 50V C270 SMT CAPACITOR 0402 1 473 5 50V C271 SMT CAPACITOR 0402 1 332 5 50V C272 SMT CAPACITOR 0402 1 NO USE C273 SMT CAPACITOR 0402 1 472 10 50V C274 SMT CAPACITOR 0402 1 332x596 50V C275 SMT CAPACITOR 0402 1 105 10 50V C276 SMT CAPACITOR 0402 1 680P 5 50V C277 SMT CAPACITOR 0402 1 33211096 50V C278 SMT CAPACITOR 0805 1 475 10 50V C279 SMT CAPACITOR 0805 1 225 10 50V C280 SMT CAPACITOR 0402 1 103 10 50V 10 DJ A10 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification C281 SMT CAPACITOR 0402 1 102 10 50V C282 SMT CAPACITOR 0402 1 104 10 50V C283 SMT CAPACITOR 0402 1 122 10 50V C284 SMT CAPACITOR 0402 1 470 5 50V C285 SMT CAPACITOR 0402 1 103 10 50V C286 SMT CAPACITOR 0402 1 104 10 50V C287 SMT CAPACITOR 0402 1 224 10 50V C500 SMT CAPACITOR 0603 1 103 10 50V C501 SMT CAPACITOR 0603 1 102 10 50V C502 C508 SMT CAPACITOR 0402 7 102 10 50V C509 SMT CAPACITOR 0402 1 103 10 50V C510 SMT CAPACITOR 0402 1 104410 50V C511 SMT CAPACITOR 0603 1 102 10 50V C512 C525 SMT CAPACITOR 0402 14 102 10 50V C526 C535 SMT CAPACITOR 0402 10 103 10 50V C536 SMT CAPACITOR 0603 1 103 10 50V C537 C553 SMT CAPACITOR 0402 17 103 10 C554 SMT CAPACITOR 0805 1 105 10 50V C555 C556 SMT CAPACITOR
25. 1241 o mx 1 m 10K 6 4 CX ENABLE LMV 224P w Barn I R236 H 2 TXENABLE 5 104P 103P ps3 p a ER gt 3 2 T Is gt im gt XL SIB ENABLE PL LD LINE TOOK LMD904V 8 JL SUB un 105P 2 1 3 II 17 ooo H 10K 1276 NUE st ix 8 EI 3 NOUSE 07 3 MR TER el 6 E E 7 EN 2 gt NOUSE Gs OUTPUT es il oe XGA 5 573nm AR I peo 3 TE Ju R231 JR235 T 24P 10K BID 5 1 I 2 GD MC R269 mos SP 3 ame LYSSML LI 2 10K is BRD 1048 LNOUT II 1058 I RUD 155372 li ox il R237 1514 OK 10K INOUSE VOL Pu PS ll MCN MO 103P 26 DJ A10 DJ A10 SCHEMATIC DIAGRAM o GN 0 o lt 1 1 gt o 4 g L t gt 5 amp 2 4 o 4 g ELIT ELS e iz e amp o 4 cf 5 CI w w Y 8 9252 2 A A S a
26. 470P 10 50V C602 C603 SMT CAPACITOR 0603 2 470P 10 50V C604 C607 SMT CAPACITOR 0402 4 470P 10 50V C608 SMT CAPACITOR 0402 1 6P 0 1P 50V C609 SMT CAPACITOR 0402 1 102 10 50V C610 C612 SMT CAPACITOR 0402 3 470P 10 50V 12 DJ A10 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification C613 SMT CAPACITOR 0603 1 NO USE C614 SMT CAPACITOR 0603 1 47P 5 50V C615 SMT CAPACITOR 0603 1 20P 5 50V C616 SMT CAPACITOR 0603 1 13 5 50V C617 SMT CAPACITOR 0402 1 2P 0 1P 50V C618 SMT CAPACITOR 0603 1 NO USE C619 SMT CAPACITOR 0402 1 2P 0 1P 50V C620 SMT CAPACITOR 0402 1 1 0 1 50V C621 SMT CAPACITOR 0402 1 2P 0 1P 50V C622 SMT CAPACITOR 0402 1 5P 0 1P 50V C623 SMT CAPACITOR 0603 1 NO USE C624 SMT CAPACITOR 0603 1 24P 5 50V C625 SMT CAPACITOR 0402 1 10 5 50V C626 SMT CAPACITOR 0603 1 13P 5 50V C627 SMT CAPACITOR 0402 1 4P 0 1P 50V C628 SMT CAPACITOR 0603 1 27 5 50V C629 SMT CAPACITOR 0603 1 18P 5 50V C630 SMT CAPACITOR 0402 1 30 5 50V C631 SMT CAPACITOR 0603 1 5P 0 1P 50V C632 SMT CAPACITOR 0402 1 12 5 50V C633 SMT CAPACITOR 0603 1 13P 5 50V C634 SMT CAPACITOR 0402 1 2P 0 1P 50V C635 SMT CAPACITOR 0603 1 27 5 50V C636 SMT CAPACITOR 0402 1 2 5P 0 1P 50V C637 SMT CAPACITOR 0402 1 47 5 50V C638 SMT CAPACITOR 0402 1 56P 5 50V C639 SMT CAPACITOR 0402 1 8P 0 25P 50V C640 SMT CAPACITOR 04
27. 6 ZXA1008 SMT IC SOT 25 5 1 TJ5205SF 33 U207 SMT IC SOT 25 1 TA75S01F U208 SMT IC SOP 8 1 LY58 ML U500 U501 ZXA1007 SMT IC SOT 25 5 2 TJ5205SF 50 U502 SMT IC SSOP14 1 NJM2904V U503 SMT IC SSOP16 1 TA31136FN U504 ZXA1019 SMT IC SSOP20 1 LMX2336ATM U900 SMT IC QFN 24 1 RDA5802 L201 L205 SMT FERRITE BEAD BLACK 0603 6 271T L500 L503 SMT FERRITE BEAD BLACK 0603 4 271T L504 SMT AIR CORE COIL 1 5T L505 SMT FERRITE BEAD BLACk 0603 1 271T L506 SMT SMALL FIXED INDUCTOR BLOVE 2520 1 1uH L507 SMT SMALL FIXED INDUCTOR 0603 1 2 7NH L508 SMT AIR CORE COIL 1 5T L509 SMT AIR CORE COIL 1 6T L510 SMT AIR CORE COIL 1 7T L511 SMT AIR CORE COIL 1 5T L512 SMT AIR CORE COIL 1 AT L513 L514 SMT FERRITE BEAD BLACK 0805 2 30T L515 SMT AIR CORE COIL 1 7T 22 DJ A10 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification L516 SMT WIRE WOUND INDUCTOR 0805 1 220nH L517 SMT WIRE WOUND INDUCTOR 0805 1 100nH L518 SMT SMALL FIXED INDUCTOR 0603 1 3 3nH L519 SMT RESISTOR 0603 1 OR L520 SMT AIR CORE COIL 1 5T 1521 1522 SMT WIRE WOUND INDUCTOR 0805 2 82nH L523 SMT AIR CORE COIL 1 3T L524 SMT WIRE WOUND INDUCTOR 0805 1 100nH L525 SMT SMALL FIXED INDUCTOR 0603 1 120nH L526 SMT SMALL FIXED INDUCTOR 0603 1 100nH L527 SMT SMALL FIXED INDUCTOR 0603 1 47nH L528 SMT SMALL FIXED INDUCTOR 0603 1 68nH L529 SMT SMALL FIXED
28. 9002 SW LED x D6 D200 sw kj D7 D12 Fig 10 6 Control Circuit The microprocessor U201 operates at a clock of 32 768KHz The control circuit consists of a microprocessor U201 and its peripheral circuits It controls the TX RX unit U201 mainly performs the following 1 Switching between transmission and reception by the PTT signal input 2 Reading system group freguency 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 6 1 Memory Circuit Memory circuit consists of the MPU U201 and an EEPROM U203 An EEPROM has a capacity of 64k bits that contains the transceiver control program for the MPU and data such as transceiver channels and operating features See Fig 11 Fig 11 DJ A10 CIRCUIT DESCRIPTION 6 2 Low battery warning The battery voltage is monitored by the microprocessor U201 When the battery voltage falls below the voltage set by the Low Battery Warning adjustment the red LED flashes to notify the operator that it is time to replace the battery If the battery voltage falls even more approx 6 0V a beep sounds and transmission is stopped Low battery warning Battery condition The red LED flashes The battery voltage is low but
29. DJ A10 Service Manual Specifications Circuit Description Parts list Schematic Diagram Block Diagram PC Board View Mechanical Parts ALINCO INC DJ A10 SPECIFICATIONS General Frequency Range RX 136 174MHz TX 136 174MHz Number of channels Max 128 Frequency Spacing 5 6 25 10 12 5 15 20 25 30 50KHz Operating Voltage 7 4 V DC 420 Battery Life More than 13 hours at 5 watts 5 5 90 duty cycle with 1500mAh Li battery Operating Temperature range 20 C to 55 C Dimensions and Weight With EBP 87 1500mAh battery Approx 59W x98H x 35D mm 220g Frequency Stability 2 5ppm Channel Frequency Spread 38MHz Receiver Measurements made per TIA EIA 603 RF Input Impedance 500 Sensitivity EIA 12dB SINAD Wide 0 25uV Narrow 0 35 Selectivity Wide 70dB Narrow 60dB Intermodulation Wide 65dB Narrow 60dB Spurious response 60dB Audio Power Output 1000mW with less than10 distortion First IF 38 850MHz Second IF 450KHz Transmitter Measurements made per TIA EIA 603 RF Power Output SW Mid 2W LO 0 5W RF Output Impedance 500 Spurious Harmonics 65dB Modulation Wide 16KOF3E Narrow 11KOF3E FM Noise Wide 45dB Narrow 40dB Audio Distortion Less than 5 DJ A10 CIRCUIT DESCRIPTIO
30. INDUCTOR 0603 1 150nH L530 SMT SMALL FIXED INDUCTOR 0603 1 470nH L531 SMT SMALL FIXED INDUCTOR BLOVE 2520 1 560nH L532 L533 SMT SMALL FIXED INDUCTOR 0603 2 100nH L534 SMT SMALL FIXED INDUCTOR 0603 1 22uH L536 SMT WIRE WOUND INDUCTOR 0805 1 82nH L537 SMT SMALL FIXED INDUCTOR 0603 1 22uH L538 SMT WIRE WOUND INDUCTOR 0805 1 56nH L539 SMT SMALL FIXED INDUCTOR 0603 1 22uH L540 L541 SMT SMALL FIXED INDUCTOR 0603 2 560nH L542 SMT SMALL FIXED INDUCTOR 0603 1 2 2uH L543 SMT SMALL FIXED INDUCTOR 0603 1 150nH L900 SMT SMALL FIXED INDUCTOR 0603 1 NO USE L901 SMT SMALL FIXED INDUCTOR 0603 1 150nH LS200 ZES1000 SPEAKER 1 16R 1W CF500 ZXC1001 CERAMIC FILTER 1 LTWC450F 23 DJ A10 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification T500 ZXK1000 CERAMIC FILTER 1 A50K C24 J200 ZUE1006 FLAT CABLE CONNECTOR SSOI16F 1 0 5S 1X 16PWB J201 ZUJ1001 SPEAKER SOCKET 1 SK 3 5mm 2 5mm MK200 ZEY1002 MICROPHONE 1 6050P W200 ZRV1001 VOLUME SWITCH 1 10K S200 2001004 2 BUTTON 1 FP1 201 ZUU1005 FP1 BUTTON 1 FP2 202 ZUU1003 TRANSMITTING BUTTON 1 PTT 203 CHANNEL SWITCH 1 ED087410 FE18C6 0 204 ZUU1001 SWITCH 1 TP 1150HSE VR500 SMT RESISTOR 1 2 2 5 500 ZXO1003 SMT TCXO 1 19 200MHz XF500 X501 ZXF1001 SMT CRYSTAL FILTER 2 38 850MHz Y200 CERAMIC FILTER 1 3 58MHz Y201 SMT CRYSTAL 1 32 768KHz Y900 SMT CRYSTAL 1 32 768KHz P500 ZUE1003 ANT CN 1 ZUA1001 FLEXIBLE CABLE 1
31. ITAL TRANSISTOR EMT3 1 DTA144EE Q204 SMT TRANSISTOR SOT 23 1 2SC1623 Q205 Q206 SMT DIGITAL TRANSISTOR EMT3 2 2SC4617 Q207 SMT DIGITAL TRANSISTOR EMT3 1 DTC114EE Q208 SMT DIGITAL TRANSISTOR EMT3 1 2SC4617 Q209 SMT DIGITAL TRANSISTOR EMT3 1 DTC144TE Q210 SMT DIGITAL TRANSISTOR EMT3 1 DTA123JE Q211 SMT DIGITAL TRANSISTOR EMT3 1 NO USE Q212 SMT DIGITAL TRANSISTOR EMT3 1 DTC144TE Q213 SMT TRANSISTOR SC 70 1 2SD2351 Q214 SMT DIGITAL TRANSISTOR EMT3 1 DTC144TE Q500 SMT DIGITAL TRANSISTOR EMT3 1 DTA144EE Q501 Q503 SMT DIGITAL TRANSISTOR EMT3 3 DTC114EE Q504 SMT DIGITAL TRANSISTOR EMT3 1 2SC4617 Q505 ZXE1003 SMT FET PLD 1 2SK3476 Q506 Q507 SMT FET SOT 143 2 3SK318 Q508 SMT DIGITAL TRANSISTOR EMT3 1 DTA143ZE Q509 Q510 SMT DIGITAL TRANSISTOR EMT3 2 DTA114EE Q511 Q512 SMT TRANSISTOR SC 70 2 2SC4082 Q513 ZXE1004 SMT FET SOT 89 1 2SK3078A Q514 SMT DIGITAL TRANSISTOR EMT3 1 DTC144EE Q515 ZXE1005 SMT TRANSISTOR SOT 23 1 2SC3356 Q516 Q518 SMT TRANSISTOR SC 70 3 2SC4226 Q519 SMT FET EMT3 1 2SK1824 Q520 SMT TRANSISTOR SC 70 1 2SC4226 21 DJ A10 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification O521 SMT FET EMT3 1 2SJ243 U200 SMT IC SOT 23 1 S7127SF U201 ZXA1005 SMT IC LQFP 100 1 SRT3210 U202 SMT IC SSOP 20 1 SX9170 U203 SMT IC SOP8 1 AT24C64RM U204 SMT IC SSOP8 1 LM2904V U205 ZXA1006 SMT IC MSOP 8 1 SGM4890 U20
32. LIST DISPLAY UNIT Ref No Parts No Description of item Size LxW mm Qty Specification C3 C4 SMT CAPACITOR 0603 2 104 10 50V C5 C6 SMT CAPACITOR 0603 2 103 10 50V R4 R5 SMT RESISTOR 0603 2 1K 5 R6 R10 SMT RESISTOR 0603 5 4 7K 5 R11 R12 SMT RESISTOR 0603 2 560R 5 R14 R15 SMT RESISTOR 0603 2 150R 5 R16 SMT RESISTOR 0603 1 100K 5 R17 SMT RESISTOR 0603 1 22R15 R18 SMT RESISTOR 0603 1 47K 5 RP2 RP3 SMT RESISTOR ARRAY 4D03 2 1KX4 D1 SMT LIGHTED DIODE 0603 1 YELLOW D2 SMT DIODE 0805 1 NO USE D5 DIP LIGHTED DIODE DIP 3 1 LEDR amp G A D6 SMT DIODE SOT 532 1 DAP222 D8 SMT LIGHTED DIODE 0603 1 WHITE D10 D12 SMT LIGHTED DIODE 0603 3 WHITE DS1 LCD 1 LCD J1 ZUE1006 FLAT CABLE CONNECTOR SSOI16F 1 0 5S 1X 16PWB L1 SMT FERRITE BEAD BLACK 0603 1 NO USE Q1 Q2 SMT DIGITAL TRANSISTOR EMT3 2 DTC114EE Q3 SMT TRANSISTOR SOT 23 1 25 1623 U2 SMT IC 1 HD44780A00 1 16 KEY 16 KEY DJ A10 PARTS LIST MAIN UNIT Ref No Parts No Description of item Size LxW mm Qty Specification C200 SMT CAPACITOR 0402 1 104 10 50V C201 SMT CAPACITOR 0402 1 102 10 50V C202 SMT CAPACITOR 0402 1 103 10 50V C203 C204 SMT CAPACITOR 0402 2 102 10 50V C205 SMT CAPACITOR 0402 1 104 10 50V C206 C212 SMT CAPACITOR 0402 7 103 10 50V C213 SMT CAPACITOR 0402 1 100 5 50V C214 C220 SMT CAPACITOR 0402 7 103 10 50V C221 SMT CAPACITOR 0603 1 183 1
33. MT RESISTOR 0402 2 1 8 5 R511 R512 SMT RESISTOR 0402 2 NO USE R512 SMT RESISTOR 0603 1 NO USE R513 SMT RESISTOR 0402 1 NO USE R514 SMT RESISTOR 0603 1 100R 5 R515 SMT RESISTOR 0402 1 NO USE R516 SMT RESISTOR 0402 1 4 7K 5 R517 SMT RESISTOR 0402 1 2 2K 5 R518 SMT RESISTOR 0402 1 270R 5 R519 R523 SMT RESISTOR 0402 4 10K 5 R524 R527 SMT RESISTOR 0402 4 100R 5 R528 SMT RESISTOR 0402 1 22R 5 R529 SMT RESISTOR 0402 1 100R 5 R530 SMT RESISTOR 0402 1 220R 5 17 DJ A10 PARTS LIST Ref No Parts No Description of item Size LxW mm Qty Specification R530 SMT RESISTOR 0402 1 100R15 R532 SMT RESISTOR 0402 1 22R 5 R533 SMT RESISTOR 0402 1 56K 5 R534 SMT RESISTOR 0402 1 47K 5 R535 SMT RESISTOR 0402 1 56K 5 R536 R537 SMT RESISTOR 0402 2 150 5 R538 SMT RESISTOR 0402 1 100 5 R539 SMT RESISTOR 0402 1 22K 5 R540 R543 SMT RESISTOR 0402 4 100K 5 R544 SMT RESISTOR 0402 1 4 7K 5 R545 R546 SMT RESISTOR 0402 2 1 5 R547 SMT RESISTOR 0402 1 1 2K 5 R548 SMT RESISTOR 0402 1 47K 5 R549 SMT RESISTOR 0402 1 4 7K 5 R550 R551 SMT RESISTOR 0402 2 2 2K 5 R552 SMT RESISTOR 0402 1 10R 5 R553 SMT RESISTOR 0402 1 OR R554 SMT RESISTOR 0402 1 22 5 R555 SMT RESISTOR 0402 1 82K 5 R556 SMT RESISTOR 0402 1 33K 5 R557 SMT RESISTOR 0402 1 15K 5 R558 SMT RESISTOR 0402 1 82K 5 R559 SMT RESISTOR 0402 1 100K 5 R560 SMT RESISTOR
34. N 1 Frequency Configuration The frequency configuration is shown in Figure 1 and Table 1 ANT CF 450KHz V RX TX 136 174MHz MIX MC AF IF SYSTEM AMp lt 38 850MHz i RF ANT SW AMP 38 40MHz MULTIPLY FINAL 160 19 200MHz RX 174 85 212 85MHz PLL MIC PRE veo H AMP MIC DRIVE TX 136 7 174MHz Fig 1 Frequency configuration DRIVE 1 Double super heterodyne Reception method 1st IF Frequency 38 85MHz Upper 2nd IF Frequency 450kHz Lower Transmission method VCO direct oscillation amplification Modulation Variable reactance phase modulation Table 1 Basic configuration 2 Receiver 2 1 Front end RF Amplifier The received signal from the antenna passes through a low pass filter and then through a transmit receive switching circuit antenna switch and enters the band pass filter L520 L521 The signal passing through the band pass filter L520 L521 is amplified by with an RF amplifier Q506 passes through a band pass filter 1522 and enters the first mixer Q507 These band pass filters are tuned to a desired frequency by varicaps D507 D508 D509 D510 A tuning voltage corresponding to the desired signal is applied to each varicap through the P76 terminal pin 32 of the MPU U201
35. d frequency directly with a Colpits oscillation circuit containing an oscillation transistor Q518 used for both transmission and reception The VCO control voltage is applied to varicap D516 D517 to produce a desired frequency The PAO terminal pin 91 of the MPU U201 goes L during transmission and the R T control switch Q519 is turned OFF to change oscillation frequency See Fig 6 Ripple Filter 5C Q504 LPF gt 0516 0517 PAD 0201 Pin91 gt T R SW Q519 PLLICU504 5KHz 6 25KHz PHASE CHARGE COMPARATOR PUMP REF OSC i PLL DATA 5KHz 6 25KHz 19 200MHz I Fig 6 3 3 Unlock Detector circuit If a pulse signal appears at the LD pin of U504 an unlock condition occurs and the DC voltage obtained from C565 R584 and D518 causes the voltage applied to the microprocessor to go low When the microprocessor detects this condition the transmitter is disabled ignoring the push to talk switch input signal See Fig 7 5M z R584 U504 U201 PLLIC 565 MPU Fig 7 4 Transmission signal system 4 1 Microphone Amplifier Circuit The audio signal from the microphone passes through a microphone amplifier U207 and enters Audio processor U201 U201 is composed of Compressor high pass filtered pre emphasi
36. n through Q201 Q205 Q206 and Q207 See Fig 4 2 6 S Meter Circuit The S meter voltage is output from the RSSI terminal pin 12 of the FM IC U503 and input to the SM terminal pin 39 of the MPU Then the voltage is converted from analog to digital in the MPU to control the S meter display on the LCD See Fig 4 PAL P71 P70 U201 MPU RSSI 1st IF input 2 4 38 85MHz Noise comp Quadrature detector Rectifier U503 FMIC AMP 2nd local OSC Noise U201 AQUA U204A 0201 0205 0206 0207 SW 0205 38 40MHz aioe 450kHz 2 6 AF signal svstem 2 6 1 Audio amplifier circuit The demodulated signal from U503 goes to Audio processor through U201 AF filtered high pass filtered de emphasized De Scrambler Expander and Mux The signal then goes through an AF amplifier U204A 1 2 an AF volume control W200 and is routed to an audio power amplifier U205 where it is amplified and output to the internal speaker See Fig 5 2 6 2 Receive Signalling 2 6 2 1 Low speed data CTCSS DCS The output signal from FM IC U503 enters the microprocessor U201 U201 determines whether the CTCSS or DCS matches the preset value and controls the SP MUTE PA1 and the speaker output sounds according to the
37. s Mux Scrambler limiter low pass filtered and MOD circuit The signal then passes through a low pass filter splatter filter Q208 and cuts 3kHz and higher frequencies The resulting signal goes to the VCO through the VCO modulation terminal for direct FM modulation See Fig 8 U207 MIC AMP Q208 U201 H gt MIC LPF SPLATTER FILTER TCXO Fig 8 4 2 Encode Signalling CTCSS DCS DTMF A necessary signal for CTCSS DCS DTMF encoding is generated by U201 and FM modulated to the PLL reference signal Since the reference OSC does not modulate the loop characteristic frequency or higher modulation is performed at the VCO side by adjusting the balance See Fig 8 DJ A10 CIRCUIT DESCRIPTION 4 3 Drive and Final Amplifier Circuit The signal from the T R switch D503 is on is amplified by the pre drive Q515 and drive amplifier 0513 to 50mW The output of the drive amplifier is amplified by the RF power amplifier 0505 to 5 0W 1W when the power is low 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 D506 and applied to the antenna terminal See Fig 9 ANT Q515 Q513 Q505 D506 From RF DRIVE RF T RSW gt gt ANT SW gt PF 0503 AMP AMP FINAL AMP Ne voo VG R589 BATT R590
38. ugh the ceramic filter CF500 passes through the IF amplifier in the FM IC again and is detected to produced an audio signal See Fig 2 2 4 Wide Narrow Switching Circuit Narrow and Wide settings can be made for each channel by switching the demodulation level The WIDE high level and NARROW low level data is output from U201 pin 11 When a WIDE high level data is received Q503 and Q509 turn on When a NARROW low level data is received Q503 and Q509 turn off Q503 and Q509 turns on off with the Wide Narrow data and the U503 detector output level is switched to maintain a constant output level during wide or narrow signals See Fig 3 0511 U503 FM SYSTEM QUAD IFOUT 0509 H Wide L Narrow P63 U201 0503 77 Fig 3 DJ A10 CIRCUIT DESCRIPTION 2 5 Squelch A noise component is obtained by passing FM detection output FM IC pin 9 through an operational amplifier in the FM IC and band pass filter consisting of R593 R594 R595 C580 C581 The noise component is rectified in the FM IC to produce a DC voltage which is output from the N REC terminal pin 14 of the FM IC as squelch voltage The squelch voltage enters the SQ terminal pin 40 of the MPU U201 and is compared with the reference voltage preset in the MPU to control audio signal ON OFF SP MUTE To output sounds from the speaker U201 sends a high signal to the PA1 line and turns U205 o
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