Sony WRT-847A Service Manual Download

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UHF SYNTHESIZED TRANSMITTER UNIT

WRT-847A
WRT-847B

SERVICE MANUAL

1st Edition

Summary of Contents for WRT-847A

Page 1: ...UHF SYNTHESIZED TRANSMITTER UNIT WRT 847A WRT 847B SERVICE MANUAL 1st Edition ...

Page 2: ...werden Um die Gefahr eines elektrischen Schlages Feuergefahr und Verletzungen zu vermeiden sind bei Wartungsarbeiten strikt die Angaben in der Anleitung zu befolgen Andere als die angegeben Wartungsarbeiten dürfen nur von Personen ausgeführt werden die eine spezielle Befähigung dazu besitzen AVERTISSEMENT Ce manual est destiné uniquement aux personnes compétentes en charge de l entretien Afin de r...

Page 3: ... Power Output Adjustment 3 4 3 2 4 Reference Frequency Deviation Adjustment 3 5 3 2 5 Maximum Frequency Deviation Adjustment 3 6 3 2 6 Distortion Ratio Check 3 7 3 2 7 S N Check 3 8 3 2 8 Frequency Characteristics Check 3 8 3 2 9 Tone Signal Adjustment 3 9 3 2 10 Battery Alarm Signal Check 3 10 3 2 11 Spurious Emissions Check 3 12 3 2 12 Occupied Band Width Check 3 13 4 Spare Parts 4 1 Notes on Re...

Page 4: ...2 WRT 487A 847B 7 Board Layout CN 2055 7 1 DP 341 7 1 RF 96 7 1 MB 914 7 2 8 Schematic Diagrams DP 341 8 1 RF 96 8 2 CN 2055 8 3 MB 914 8 3 ...

Page 5: ...rsque l opération de l appareil est dans les limites de la bande de radiodiffusion la licence est émanée sur la base de non interférence non protection avec les signaux de radiodiffusion L utilisation de cet appareil est soumise aux deux conditions suivantes 1 cet appareil ne peut causer d interférences et 2 cet appareil doit accepter toutes les interférences y compris les interférences capables d...

Page 6: ... In building up a UHF wireless microphone system be sure to combine a microphone transmitter and a tuner having the same TV channel number Features Selectable microphone capsules To make up suitable wireless microphones for your use five microphone capsule units are available as optional accessories The capsule units for the WRT 847A 847B are CU F780 Super Cardioid Dynamic Microphone Unit CU G780 ...

Page 7: ... unit for mounting 2 Liquid crystal display LCD A AF audio input indication Lights whenever an audio signal stronger than the reference level is received B RF antenna output indication Lights during signal transmission from the antenna C Power RF power indication Shows the RF power setting See Changing the RF Output Power on page 12 A B D C E AF RF BATT 1 In the figure the CU F780 capsule unit not...

Page 8: ...ons in Setting mode Changing the Transmitting Channel The transmitting channel can be selected through either the channel number or the frequency 1 Set the transmitter to Setting mode If the channel number or frequency indication does not appear press the SET button until the channel number or frequency indication appears 2 Press the or button to select the channel number or frequency Pressing the...

Page 9: ...e RF output power selected AF RF BATT AF RF BATT button button AF RF BATT AF RF BATT button button 13 GB The transmitter cannot be turned off Symptom Troubleshooting If you have any problem using the transmitter use the following checklist Should any problem persist consult your Sony dealer Meaning Remedy The transmitter does not turn on The and poles of the batteries do not match those of the bat...

Page 10: ...32 768 kHz Battery condition signal 32 782 kHz Type of antenna 1 4 wavelength wire Audio section Acceptable microphone capsule Sony microphone capsules listed on next page Pre emphasis 50 µs Deviation 5 kHz 55dBV 1 kHz input Frequency response 70 to 15 000 Hz 16 GB Supplied accessory Operating Instructions 1 Sony Wireless Microphone System Frequency List 1 Microphone holder 1 Stand adaptor 1 PF 1 ...

Page 11: ...oval tool Stop ring removal tool Stop ring Grip 3 Grip 3 Grip 3 Push the hooks on the stop ring with the stop ring removal tool and remove grip 3 Tool required Stop ring removal tool Sony part No J 6407 000 A Grip 3 Antenna Remove the antenna by pushing it in direction of the arrow toward inside grip 3 ...

Page 12: ...2 2 WRT 847A 847B Switch cover Switch assembly Grip 2 Switch cover Switch assembly Switch Unit assembly Grip 2 Grip 2 LCD plate Tweezers B type M2x4 K M2x7 ...

Page 13: ...T 847A 847B Chassis Lid A Lid B CN 2055 board DP 341 board RF 96 board MB 914 board Unsolder Unsolder Chassis Chassis Chassis SHEET MB 914 board CN 2055 board DP 341 board RF 96 board Screw Lid A Lid B B M2x4 ...

Page 14: ...op ring Grip 3 DP 341 board Connector CN201 Connector CN302 MB 914 board DP 341 board DP 341 board Chassis Chassis When attaching the DP 341 board to the chassis insert the DP 341 board in the order 1 and 2 in the direction of the arrow as shown 1 2 Insert only the first turn of battery spring Battery spring 3 Battery spring ...

Page 15: ... memory data The data was initialized Set the transmitting channel frequency the audio gain level the compander time constant and RF output power again Error 21 The PLL synthesized circuit is in trouble Check the PLL synthesized circuit IC402 CP401 and its peripheral circuit on MB 914 board Error 31 The battery voltage exceeds the allowable value Don t exceed 4 2 V http getMANUAL com ...

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Page 17: ...ent Audio Analyzer Oscillator 20 Hz to 100 kHz HEWLETT PACKARD 8903B with A weight filter or equivalent Distortion meter S N meter Level meter Frequency Counter Frequency 10 Hz to 1000 MHz HEWLETT PACKARD 5385A or equivalent Effective digits 10 digits Resolution 0 1 Hz Oscilloscope Frequency DC to 10 MHz _ Digital Volt Meter Effective digits 3 1 digits _ 2 Tools Required Name Part No Remarks RF ad...

Page 18: ... and CN 2055 board from WRT 847A 847B unit and then the MB 914 DP 341 RF 96 boards must be con nected electrically as shown below Refer to the Section 2 Service Overview for removal 2 Connect the RF adjusting cable J 6402 390 A with RF conversion connector J 6402 490 A to the antenna connector CN402 on the RF 96 board as shown below 3 Connecting the DC power supply Supply the DC power to the batte...

Page 19: ...s below Specification DC Voltage at CL308 3 3 0 1 V dc 1 1 1 1 1 GND RV301 RV304 RV303 S201 CT201 CN402 S202 S203 SET ON DP 341 board MB 914 board B side MB 914 board A side RF 96 board RV401 1 CT401 1 RV402 VCC S301 POWER 4 Switch and Control Setting during Adjustment and Checking The following setting is to be perform with the SET switch S203 switch S201 and _ switch S202 Transmitting Channel se...

Page 20: ... 1CT201 DP 341 Board A side 3 2 3 RF Power Output Adjustment Equipment and Tools DC power supply DC output voltage 3 0 0 1 V dc DC ammeter Power meter with power sensor RF adjusting cable Part No J 6402 390 A RF conversion connector Part No J 6402 490 A Adjustor Part No 7 721 052 81 Connections For connecting the DC power supply refer to the Prepara tions on page 3 2 Switch and Control Setting Fir...

Page 21: ...yzer as below MEASUREMENT FM MEASUREMENT RANGE AUTO or 10 kHz manual operation HPF 50 Hz LPF 15 kHz or 20 kHz DE EMPHASIS 50 us 3 Adjust 1RV303 so that the frequency deviation for the modulation analyzer reading meets the following speci fication Specification Frequency deviation Maximum Adjustment 1RV303 MB 914 board B side 4 Adjust 1RV304 so that the frequency deviation for the modulation analyz...

Page 22: ...ct the modulation analyzer to the antenna connec tor CN402 with RF adjusting cable and RF conver sion connector Set the modulation analyzer as below MEASUREMENT FM MEASUREMENT RANGE AUTO or 100 kHz manual operation HPF 50 Hz LPF 15 kHz or 20 kHz DE EMPHASIS 50 us 3 Adjust 1RV303 so that the frequency deviation for the modulation analyzer reading meets the following speci fication Specification Fre...

Page 23: ...ation analyzer to the antenna connec tor CN402 with RF adjusting cable and RF conver sion connector Set the modulation analyzer as below MEASUREMENT FM MEASUREMENT RANGE AUTO or 40 kHz manual operation HPF 50 Hz LPF 15 kHz or 20 kHz DE EMPHASIS 50 us 3 Set the audio analyzer to distortion measurement dis tortion mode 4 Input 1 kHz _55 dBV _52 8 dBm signal to the AF input connector CN301 MB 914 boa...

Page 24: ...ency Characteristics Check Equipment and Tools DC power supply DC output Voltage 3 0 0 1 V dc DC ammeter Audio analyzer Modulation analyzer Oscilloscope RF adjusting cable Part No J 6402 390 A RF conversion connector Part No J 6402 490 A AF input cable Part No J 6407 010 A Connections Same as 3 2 6 Distortion Ratio Check Switch and Control Setting First Perform the same setting as described in 4 S...

Page 25: ...zer level meter is 2 1 1 0 dB Indication level is 2 1 1 0 dB as compared with the read level of procedure 5 above 10 Next switch the oscillation frequency for the audio ana lyzer oscillator from 10 kHz to 15 kHz 11 Check that the reading for the audio analyzer level meter is _4 7 2 0 dB Indication level is _4 7 2 0 dB as compared with the read level of procedure 5 above 3 2 9 Tone Signal Adjustmen...

Page 26: ...nnector RF IN AF OUT DP 341 board RF 96 board MB 914 board A side CN402 3 2 10 Battery Alarm Signal Check Equipment and Tools DC power supply DC output Voltage 3 0 0 1 V dc DC ammeter Frequency counter Spectrum analyzer Modulation analyzer RF adjusting cable Part No J 6402 390 A RF conversion connector Part No J 6402 490 A Switch and Control Setting First Perform the same setting as described in 4...

Page 27: ...rum analyzer and tone signal is with in 29 1 dB 2 Frequency check Connections For connecting the DC power supply refer to the Prepara tions on page 3 2 Procedure n Perform the checking with the AF input connector CN301 MB 914 board short circuited 1 Connect the modulation analyzer to the antenna connec tor CN402 with RF adjusting cable and RF conver sion connector and connect the frequency counter...

Page 28: ... 3 then perform the following setting RF power setting H 50 mW Procedure 1 Connect the spectrum analyzer to the antenna connector CN402 with RF adjusting cable and RF conversion connector 2 Set the spectrum analyzer as follows CENTER FREQUENCY 2 5 GHz REFERENCE LEVEL 20 dBm FREQUENCY SPAN 5 GHz 500 MHz DIV or Full span RBW resolution band width 300 kHz ATT 20 dB 3 Check that the spurious emissions...

Page 29: ...arts supplied by Sony differ from those used for the unit These are because of parts common ality and improvement Parts list has the present standardized repair parts 3 Stock of Parts Parts marked with o at SP Supply Code column of the spare parts list may not be stocked Therefore the delivery date will be delayed 4 Harness Harnesses with no part number are not registered as spare parts In need of...

Page 30: ...4 2 WRT 847A 847B 4 2 Exploded Views and Parts List 8 14 11 18 20 15 2 19 9 10 3 4 17 1 23 6 7 22 16 13 5 12 21 K 2x6 B 2x4 B 2x4 ...

Page 31: ...CE21 model A 8328 097 A s MOUNTED CIRCUIT BOARD RF 96 CE33 For CE33 model A 8328 101 A s MOUNTED CIRCUIT BOARD RF 96 U14 For U14 model A 8328 105 A s MOUNTED CIRCUIT BOARD RF 96 U30 For U30 model 5 X 3608 169 1 s ASSY SWITCH 6 1 467 301 11 s DISPLAY LIQUID CRYSTAL 7 1 537 802 11 o CONDUCTIVE BOARD CONNECTION 8 1 754 180 11 s ANTENNA For CE21 U14 model 1 754 181 11 s ANTENNA For CE33 U30 model 1 75...

Page 32: ... 1MF 25V F C222 1 164 156 11 s CAPACITOR CERAMIC 0 1MF 25V F C223 1 104 851 11 s CAPACITOR TANTALUM 10MF 10V C224 1 164 156 11 s CAPACITOR CERAMIC 0 1MF 25V F CN201 1 779 201 11 s CONNECTOR BOARD TO BOARD 30P CN202 1 573 984 11 o CONNECTOR BOARD TO BOARD 10P CT201 1 141 322 11 s CAPACITOR VAR TRIMMER D201 8 719 421 69 s DIODE MA133 D202 8 719 981 33 s LED GL1HY51 LT1H51A D203 8 719 981 33 s LED GL...

Page 33: ...11 s CAPACITOR TANTALUM 22MF 10V C309 1 125 839 11 s CAPACITOR TANTALUM 47MF 6 3V C310 1 162 977 11 s CAPACITOR CERAMIC 1800P 50V B C311 1 125 839 11 s CAPACITOR TANTALUM 47MF 6 3V C312 1 164 156 11 s CAPACITOR CERAMIC 0 1MF 25V F C313 1 162 919 11 s CAPACITOR CERAMIC 22PF 50V CH C314 1 162 970 11 s CAPACITOR CERAMIC 0 01MF 25V B C315 1 162 923 11 s CAPACITOR CERAMIC 47PF 50V CH C316 1 162 920 11 ...

Page 34: ...Q308 8 729 015 66 s TRANSISTOR 2SC4919 Q309 8 729 049 15 s TRANSISTOR CPH6403 TL Q310 8 729 031 69 s TRANSISTOR 2SA1965 TL Q311 8 729 425 64 s TRANSISTOR 2SD2216Q Q312 8 729 015 66 s TRANSISTOR 2SC4919 Q313 8 729 015 66 s TRANSISTOR 2SC4919 Q314 8 729 015 66 s TRANSISTOR 2SC4919 Q315 8 729 031 69 s TRANSISTOR 2SA1965 TL Q316 8 729 015 66 s TRANSISTOR 2SC4919 Q317 8 729 049 15 s TRANSISTOR CPH6403 ...

Page 35: ...3 348 11 s RES ADJ CERMET 22K RV303 1 223 348 11 s RES ADJ CERMET 22K RV304 1 223 348 11 s RES ADJ CERMET 22K S301 1 771 756 11 s SWITCH SLIDE T301 1 435 951 11 s TRANSFORMER DC DC CONVERTER X301 1 767 314 11 s VIBRATOR CRYSTAL X302 1 760 928 21 s OSCILLATOR CRYSTAL RF 96 BOARD Ref No or Q ty Part No SP Description 1pc A 8327 822 A s MOUNTED CIRCUIT BOARD RF 96 CE62 model 1pc A 8327 827 A s MOUNTE...

Page 36: ...31 s INDUCTOR CHIP J 12NH CE67 model 1 414 465 31 s INDUCTOR CHIP J 15NH CE62 U62 U66 AU66 model 1 414 467 31 s INDUCTOR CHIP J 22NH CE33 U30 model 1 414 470 31 s INDUCTOR CHIP J 39NH CE21 U14 model L410 1 414 467 31 s INDUCTOR CHIP J 22NH CE33 U30 model 1 414 470 31 s INDUCTOR CHIP J 39NH CE21 U14 model L411 1 414 467 31 s INDUCTOR CHIP J 22NH L412 1 414 465 31 s INDUCTOR CHIP J 15NH CE33 U30 mod...

Page 37: ...CE33 model 1pc 3 205 133 11 s FREQUENCY LIST CE62 model 1pc 3 205 135 11 s FREQUENCY LIST CE67 model 1pc 3 205 136 11 s FREQUENCY LIST U14 model 1pc 3 205 140 11 s FREQUENCY LIST U30 model 1pc 3 205 148 11 s FREQUENCY LIST U62 model 1pc 3 205 149 11 s FREQUENCY LIST U66 model 1pc 3 205 150 11 s FREQUENCY LIST AU66 model 1pc 3 631 690 01 o CASE CARRY 1pc 3 682 248 01 s REST ARM RF 96 BOARD Ref No o...

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Page 39: ...lock diagrams are based on the IC manufacturer s data book 1SS355TE 17 5 2 1SS367 T3SONY 5 2 GL1HY51 TE84L 5 2 MA133 TX 5 2 UMZ8 2T T106 5 2 ADG704BRM REEL7 5 3 ADG719BRT REEL7 5 3 AT24C64N 10SI 1 8 TR 5 3 CXA1786N T4 5 3 MC33077DR2 5 3 NJM2107F TE2 5 3 RH5RH583B T1 5 3 S 80827ANNP EDQ T2 5 4 S 81233SGUP DQF T1 5 4 SA575DK T 5 4 TA75S393F TE85R 5 4 TC4069UBFT EL N 5 4 TC4S11F TE85R 5 4 TC74VHCU04F...

Page 40: ...2L 2SC4738 YGR TE85L 2SC4919 TL FMMT617TA 2SC5015 T1 CPH6403 TL DTA144EE TL DTC114EE TL DTC143ZE TL TOP VIEW WIDE TOP VIEW TOP VIEW TOP VIEW TOP VIEW TOP VIEW B E E C TOP VIEW WIDE 1 2 3 6 5 4 TOP VIEW 4 S 3 1 2 6 5 TOP VIEW R1 R2 TOP VIEW R1 R2 TOP VIEW 5 1 4 3 2 R1 R2 R2 R1 5 4 3 1 2 UMG8 TR 6 5 4 TOP VIEW 1 2 3 5 6 4 1 2 3 XN4504 TX ...

Page 41: ... PROGRAMMABLE COUNTER CHARGE PUMP 1 CHARGE PUMP 2 SHIFT RESISTOR LATCH flR flP TEST Do2 LAT FC PS DATA CK OSCI OSCO Vp Do1 LD FIN 1 3 4 6 10 8 15 12 13 11 17 16 20 18 14 REFERENCE FREQUENCY INPUT REFERENCE FREQUENCY OUTPUT POWER SUPPLY FOR CHARGE PUMP PHASE COMPARATOR CHARGE PUMP 1 OUTPUT CHARGE PUMP 2 OUTPUT LOCK DETECTION SIGNAL OUTPUT PHASE COMPARATOR OUTPUT PHASE COMPARATOR OUTPUT CLOCK INPUT ...

Page 42: ...UT 1 COMP IN 1 VREF GAIN CELL IN 1 V IN 2 _V IN 2 V OUT 2 RECT IN 2 C RECT 2 SUM OUT 2 COMP IN 2 SUM NODE 2 GAIN CELL IN 2 _ _ _ LOW VOLTAGE COMPANDOR TOP VIEW TA75S393F TE85R TOSHIBA VCC 1 3 OUT 2 5 4 IN IN _ VEE _ SINGLE COMPARATOR TOP VIEW 14 VDD 13 12 11 10 9 8 1 2 3 4 5 6 7 GND A Y Y A Y A A 0 1 0 1 LOW LEVEL HIGH LEVEL Y 1 0 C MOS INVERTER TOP VIEW TC4069UBFT EL N TOSHIBA TC4S11F TE85R TOSHI...

Page 43: ... OUT EEPROM PLL data out 48 CS OUT EEPROM chip select 49 LAT OUT PLL latch 50 NC CPU Pin Description IC202 UPD753036GK PIN SIGNAL I O DESCRIPTION 51 LVD OUT Battery alarm 52 DO IN EEPROM data in 54 FRC OUT EQ switch 55 TC OUT TC switch 56 57 NC 58 Pull up 59 BAT1 IN Battery voltage 60 Ground 61 AFIND IN AF level 62 CU ID IN Capsule ID 63 Ground 64 AVSS Ground 65 AVREF IN A D convertor reference vo...

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Page 45: ...izer method The VCO CP401 acts as an oscillator and modulator for the carrier frequency through voltage con trol The carrier frequency is controlled by the serial data PLL data sent from the CPU to the PLL IC IC402 The signal amplified by the RF amplifier circuit Q404 Q405 is output from the antenna via the isolator CP403 Further the voltage comparator Q401 detects the lock condition of the PLL by...

Page 46: ...6 2 WRT 847A 847B ...

Page 47: ...47B 7 1 Section 7 Board Layout CN 2055 DP 341 RF 96 CN 2055 DP 341 RF 96 DP 341 A SIDE SUFFIX 11 DP 341 B SIDE SUFFIX 11 CN 2055 A SIDE SUFFIX 11 CN 2055 B SIDE SUFFIX 11 RF 96 A SIDE SUFFIX 11 RF 96 B SIDE SUFFIX 11 ...

Page 48: ...7 2 WRT 847A 847B 7 2 MB 914 MB 914 MB 914 A SIDE SUFFIX 11 MB 914 B SIDE SUFFIX 11 ...

Page 49: ...7 P53 D7 36 P52 D6 35 P51 D5 32 P43 D3 31 P42 D2 30 P41 D1 29 P40 D0 53 P33 MD3 52 P32 MD2 51 P31 SYNC MD1 50 P30 LCDCL MD0 49 P23 BUZ 48 P22 PCL PTO2 47 P21 PTO1 46 P20 PTO0 45 P13 TI0 44 P12 INT2 43 P11 INT1 42 P10 INT0 41 P03 SI SB1 40 P02 SO SB0 39 P01 SCK 20 S12 19 S13 18 S14 17 S15 16 S16 15 S17 14 S18 13 S19 12 S20 11 S21 10 S22 9 S23 8 S24 BP0 7 S25 BP1 6 S26 BP2 5 S27 BP3 4 S28 BP4 3 S29 ...

Page 50: ...H C429 4pF 50V CH 4pF 50V CH C433 C434 NM C430 C431 C432 CP401 VCO CP403 ISOLATOR MVU 482S MVU 578S MVU 815S MVU 853S MVU 482S MVU 578S MVU 773S MVU 799S AU66 MVU 799S 0482M L404 L407 L408 L409 L410 L411 L412 L413 R419 3 3kΩ 1 16W R420 220Ω 1 16W R426 10kΩ 1 16W NM No mount 18nH 6 8nH 15nH 15nH 39nH 22nH 22nH 15nH 2pF 50V CK 1 5pF 50V CK 3pF 50V CJ 4pF 50V CH 3pF 50V CJ 3pF 50V CJ 4pF 50V CH 4pF 5...

Page 51: ...366 1uF 16V R333 4 7k R336 100k R301 220 R371 150k 28 30 CN302 29 30 CN303 R376 4 7k 2 30 CN302 R306 1 5k D3021SS355TE 17 R303 3 3k 25 30 CN303 21 30 CN303 C370 220pF 13 30 CN302 17 30 CN303 C321 27pF 24 30 CN302 R379 100k C324 0 1uF R381 18k R318 100k C363 1uF R398 4 7k C372 10uF 10V R365 470k 13 30 CN303 R349 5 6k R321 100k R313 10M 9 30 CN303 R388 15k CL303 JC301 C334 22uF 10V C313 22pF 9 30 CN...

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Page 54: ...Printed in Japan Sony Corporation 2001 1 11 Communication System Solutions Network Company 2001 WRT 847A AU WRT 847B U CE E 9 976 893 01 ...

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