Sangean ATS-909X - WORLD BAND RADIOS Page 16 Service Manual Download | Manualshive

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(8) ALIGNMENT FOR AM SSB. IF SENSITIVITY

a. Required

Instrument

RF Signal Generator (RFSG)

SSVM

b. Alignment

Procedure

Setting Procedure

(1)

Turn the radio to ON and tune receiving frequency to 15.1MHz.

RECEIVING
FREQUENCY

15.1 MHz

(2)

Set RF Gain VR301 to Max. and slide Wide/Narr. switch to WIDE.

BAND SW

(3)

Feed a signal with 1KHz 30% modulation from RFSG into ANT IN

AM MODE

AM

(TP2).

TONE NORM

(4)

Adjust T1 to have maximum 1KHz output level on SSVM.

WIDE / NARR.
MONO

WIDE

RF GAIN

MAX

ADJUSTMENT T1

c. Instrument

Connection

T1

TP8

TP4

SSVM

6

dBµ

30%

15.1 MHz

RFSG

RF OUT

TP2
TP5

16

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Summary of Contents for ATS-909X - WORLD BAND RADIOS

Page 1: ...n PCB Bottom View 19 Control PCB Top View 20 Control PCB Bottom View 21 Key PCB Top View 22 Key PCB Bottom View 23 Wiring Diagram 24 Troubleshooting Flow Chart 25 28 Electrical Parts List 29 34 Mechan...

Page 2: ...utput 60dB 0 6 3 mv Tuning Ind Sens 4 nd dot 13 18 Auto Scan Stop Sens 18 24 Stereo indicator Sens 18 24 dB Stereo separation 1KHz 25 20 dB Spurious rejection 50 dB S N Ratio 60dB 50 44 dB Alter Chann...

Page 3: ...10KHz S N 6 dB 40 dB Bandwidth WIDE 6 dB S N 6 dB 7 4 8 KHz Bandwidth NARROW 6 dB S N 6 dB 4 5 2 5 6 KHz T H D 5mV 74 dB m 2 4 Lowest Batt Volt 74 dB m 3 9 4 2 V Hum Modulation 100 dB m dB Tuning Ind...

Page 4: ...fidelity 6 Db 2200 Hz Selectivity 10KHz S N 6Db 50 Db Bandwidth WIDE 6Db S N 6Db 6 4 8 KHz Bandwidth NARROW 6Db S N 6Db 4 5 3 7 KHz T H D 60 emf dB 2 4 A G C F O M 86 dB 60 Db Image Rejection 42 36 Db...

Page 5: ...N 6dB 225KHz 50 dB Selectivity 10KHz S N 6dB 40 dB Bandwidth 6dB S N 6dB KHz T H D 5mV 74dB m 2 5 Lowest Batt Volt 74dB m 3 9 4 2 V Hum Modulation dB Tuning Ind Sens 4nd dot 68 dB m Auto Scan Stop Se...

Page 6: ...R 0 THD 3 AUX IN 400Hz 1 5 1 V I S Input Sensitivity AUX IN 400Hz OUT 0 5W Volume MAX 150 50 mV DISTORTION AUX IN I S 400Hz OUT R O 0 5 1 MIN OUTPUT AUX IN I S 400Hz Volume MIN 1 3 mV S N RATIO AUX IN...

Page 7: ...9G D2 D36 SWITCH SWITCH 9G 9G ANT1 2 1 CN3 6V BT SP1 RADIO 3V D30 NI MH MAIN PCB BLOCK DIAGRAM 7...

Page 8: ...9G 2 1 W501 2 1 W201 X302 32 768KHz 2 1 CN3 X301 4 332MHz 2 1 W305 2 1 W304 RADIO 3 3V CONTROL PCB BLOCK DIAGRAM 8...

Page 9: ...TP1 RECEIVING FREQUENCY 15 1 MHz 2 Turn the radio to ON and set AM mode to USB BAND SW 3 Adjust TC1 to have a reading specification frequency 452KHz AM MODE USB LSB 30Hz TONE NORM 4 Set AM mode to LS...

Page 10: ...the radio receiving frequency to 15 1MHz AM MODE LSB 4 Connect RFSG output to ANT IN TP2 TONE NORM 5 Adjust T7 to get 1KHz maximum level output of the speaker 6 Change RFSG output frequency to 55 843...

Page 11: ...G FREQUENCY 15 1 MHz 2 Set RF Gain VR301 to Max and slide Wide Narr switch to WIDE BAND SW 3 Feed a signal with 1KHz 30 modulation from RFSG into ANT IN AM MODE AM TP2 TONE NORM 4 Adjust T3 T4 T5 T6 T...

Page 12: ...receiving frequency to LW 450KHz RECEIVING FREQUENCY 450KHz 2 Feed a 450KHz signal with 1KHz 30 modulation to loop antenna BAND LW 3 Connect a SSVM to speaker output TP4 AM MODE AM 4 Adjust T9 to get...

Page 13: ...output to 40 emf dB without modulation BAND SW 2 Set AM mode to LSB mode and volume turn to maximum AM MODE LSB 3 Tune the radio receiving frequency to 15 1MHz by 10 key or tuning TONE NORM up down an...

Page 14: ...o SLOW AM MODE LSB 4 Connect RFSG to ANT IN TP2 and set RF output to 15 1MHz 40 TONE NORM emf dB without modulation 5 Connect a frequency counter to speaker output TP4 WIDE NARR MONO NARR 6 Adjust SVR...

Page 15: ...ENCY 15 1 MHz 2 Connect the RFSG to ANT IN TP2 and set frequency to BAND SW 15 1MHz with 1KHz modulation AM MODE AM 3 Connect a DVM to TP6 TONE NORM 4 Set RFSG output level to 60 emf dB 5 Adjust SVR1...

Page 16: ...cy to 15 1MHz RECEIVING FREQUENCY 15 1 MHz 2 Set RF Gain VR301 to Max and slide Wide Narr switch to WIDE BAND SW 3 Feed a signal with 1KHz 30 modulation from RFSG into ANT IN AM MODE AM TP2 TONE NORM...

Page 17: ...TEST POINTS DIAGRAM 17...

Page 18: ...MAIN PCB TOP VIEW 18...

Page 19: ...MAIN PCB BOTTOM VIEW 19...

Page 20: ...CONTROL PCB TOP VIEW 20...

Page 21: ...CONTROL PCB BOTTOM VIEW 21...

Page 22: ...KEY PCB TOP VIEW 22...

Page 23: ...KEY PCB BOTTOM VIEW 23...

Page 24: ...WIRING DIAGRAM 24...

Page 25: ...D Check whether any key had short YES NO Check the power detect circuit Q308 D308 and IC306 Check circuit of com IC305 2 PLL do not work in AM band NO Check whether TP9 the voltage is more than 14Vdc...

Page 26: ...ing circuit YES NORMAL YES Check the oscillator frequency of TP1 whether 448KHz in LSB mode or 452KHz in USB mode Check the circuit of Q6 Q7 and Q8 NO Check the oscillator circuit Q9 and T2 YES Check...

Page 27: ...he connect wires one open from PCB to speaker NO YES Check whether earphone action is normal while an earphone plug in to JK5 Check JK5 NO Check the circuit of IC6 and IC7 YES Check the circuit of vol...

Page 28: ...nd OSC are normal YES Check whether AGC circuit is normal Q3 Q5 D23 and Q24 YES Check the circuit of 2 nd if stage 450KHz Q13 Q22 Q23 and T6 6 Charge does not work NO Check whether the pin 8 voltage o...

Page 29: ...13 14 22 32 34 36 311 1022272 CH TR 2SC4154 G hFE 400 2 Q 43 44 1023010 CH TR 2SD1048 X6 4 Q 26 55 48 49 1030081 FET 2SK715W 7 Q 15 16 18 21 30 1030100 CH FET 2SK433B KB 1 Q 309 1030190T FET 2SK2880A...

Page 30: ...B TB067A 0D 1 SVR2 1601001 LCD 0121A HTGT ATS 909X 1 1615481 PCB A ATS 909X 1 2T 2 1 PCB A 1615490 PCB C ATS 909X 1 2T 2 1 PCB C 1615500 PCB D ATS 909X 1 2T 2 1 PCB D 1620880 SPK 3 8 3W MAX 1 SPEAKER...

Page 31: ...25V 5x11 T 105 6 C 127 172 174 179 184 162 4422632T2H EL 226M 16V 4x7 T 105 1 C 102 4447602T2H EL 476M 4V 4x7 T 105 1 C 120 4447624T2H EL 476M 10V 5x11 T 105 5 C 79 93 156 187 195 4410712T0H EL 107M...

Page 32: ...C 1 C 44 5433001 CH CC 330J 50V NPO C 4 C 11 29 106 140 5433351 CH CC 333K 16V X7R C 2 C 150 151 5439001 CH CC 390J 50V NPO C 1 C 58 5439101 CH CC 391J 50V NPO C 1 C 35 5447001 CH CC 470J 50V NPO C 6...

Page 33: ...4 R 141 267 394 93 61301222 CH RD 2K2J 0603 11 R 27 71 78 106 132 204 373 387 388 392 34 61301223 CH RD 22KJ 0603 18 R 81 87 96 143 145 153 163 180 205 227 235 242 266 138 223 224 320 206 61301224 CH...

Page 34: ...7 61301563 CH RD 56KJ 0603 6 R 9 30 53 380 312 321 61301564 CH RD 560KJ 0603 2 R 354 355 61301680 CH RD 68J 0603 1 R 324 61301681 CH RD 680J 0603 1 R 85 61301682 CH RD 6K8J 0603 9 R 4 16 125 348 504 5...

Page 35: ...D RIGHT LEFT 31 2300TW00800 LENS MYLAR UP 1 A4 TW 11 32 2300TW00900 LENS MYLAR DOWN 1 A4 TW 12 33 2300TW01000 DOUBLE TAPE A t 0 5 1 A4 TW 13 FRONT CABINET DISPLAY WINDOW 34 2300TW01100 DOUBLE TAPE B t...

Page 36: ...OWER KEY 1 A3 TW 11 70 3102TW0000010 VOLUME KNOB 1 A3 TW 12 71 3103TW0000010 REVOLVER KNOB 1 A3 TW 13 72 3104TW0000010 TONE KNOB 1 A3 TW 14 73 3105TW0000010 TIME KNOB 1 A3 TW 15 74 3106TW0000010 ST KN...

Page 37: ...37...

Page 38: ...IC CIRCUIT BLOCK DIAGRAM 1 IC1 Si4735 D60 2 IC2 UTC7640P 38...

Page 39: ...3 IC3 TC4066BFN 4 IC4 XC62FP3002PRN 39...

Page 40: ...5 IC5 NJM2100M 6 IC6 PT2308 40...

Page 41: ...7 IC7 NJM2073D 8 IC8 PC 17K1 41...

Page 42: ...9 IC9 MC33340 10 IC10 LD1117AL ADJ 42...

Page 43: ...11 IC300 24LC32A 12 IC304 MB15A01PFV1 43...

Page 44: ...13 IC305 UPD78F0513A 14 IC306 XC6202P302PRN 44...

Page 45: ...2SB815 2SK2880A 2SC1623 2SC2223 2SC4154 2SD1048 E Emitter C Collector B Base S Source G Gate D Drain Diodes A A C C A C A C A C A C 1N4002 SVC201SPA W04M 1 5A ZENER 3V 1N5817 ZENER RD5V1 1N60P ZENER 6...

Page 46: ...6 13 6 1 6 1 6 1 0 02 13 0 74 0 74 0 74 0 74 0 13 1 34 1 43 1 43 1 43 1 43 13 0 6 22 6 22 6 21 6 25 14 0 74 0 74 0 74 0 74 0 14 1 34 1 43 1 43 1 43 1 43 14 6 24 6 22 6 22 6 22 6 25 15 0 0 0 0 0 15 1 3...

Page 47: ...1 52 1 52 1 52 0 1 52 28 0 0 0 0 0 49 1 52 1 52 1 52 1 52 1 52 8 1 52 1 52 1 52 0 1 52 29 0 0 0 0 0 50 1 52 0 0 1 52 1 52 9 1 52 1 52 1 52 0 1 52 30 0 0 0 0 0 51 1 52 1 52 1 52 1 52 1 52 10 1 52 1 52...

Page 48: ...1 37 1 37 1 37 34 2 76 2 76 2 76 0 2 76 55 1 35 1 35 1 35 1 35 1 35 14 1 37 1 37 1 37 1 37 1 37 35 2 78 2 78 2 78 2 78 2 78 56 1 35 1 35 1 35 1 35 1 35 15 1 37 0 0 1 37 1 37 36 2 79 2 79 2 79 0 2 79...

Page 49: ...12 14 0 2 87 2 87 2 86 0 30 0 2 03 2 03 2 75 2 75 46 1 11 2 52 2 52 1 11 2 52 15 2 73 2 8 2 8 2 8 2 8 31 0 0 0 0 0 47 2 5 0 0 0 0 16 0 3 3 3 3 32 0 0 0 0 2 79 48 2 8 2 8 2 8 2 8 2 8 Transistor PIN FM...

Page 50: ...5 0 85 0 23 B 0 0 7 0 7 0 67 0 E 0 0 11 0 11 0 11 0 E 0 0 0 0 0 Q22 C 0 23 1 03 1 03 1 0 23 Q36 C 0 22 1 56 1 56 1 56 0 22 B 0 0 0 0 67 0 B 5 6 2 28 2 28 2 31 5 6 E 0 0 0 0 0 E 3 3 3 3 3 Q23 C 0 23 2...

Page 51: ...5 0 55 0 57 0 57 B 0 0 63 0 63 0 63 0 E 0 0 0 0 0 E 0 0 0 0 0 Q50 C 0 0 0 0 0 Q307 C 6 1 0 0 0 6 1 B 0 0 0 0 0 B 3 0 3 3 3 3 0 E 0 0 0 0 E 3 6 3 65 3 65 3 65 3 6 Q51 C 10 2 10 56 10 56 10 2 10 2 Q308...

Page 52: ...6 C11 33P 27P C99 50P TC1 R177 47K R175 100K 180K R117 C133 R36 10K R249 100K R232 1K 2SC1623 Q53 22k R224 1M R128 D30 1N4002x2 R73 100K R62 D41 1N5817 2 1 3 4 PC 17K1 IC8 2SD1048 Q55 C51 104 120K R20...

Page 53: ...13m 1k R368 68K R333 R400 1k 82k R366 C374 104 C330 105 AUX S304 WORD HOME S301 D300 RLS4148 R322 1k Q301 2SC1623 R701 10 R703 10 R311 100K BZ301 C320 10 16 12 10 8 6 4 2 1 11 7 5 3 9 W302 TO CN2 R39...

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