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5-2

WRT-808A (U)

5-2. Exploded Views

No. Part No. SP Description

1 A-8322-863-A o MOUNTED CIRCUIT BOARD, AF-27 (U68)
2 A-8322-868-A s SPRING ASSY, BATTERY
3 A-8322-877-A o MOUNTED CIRCUIT BOARD, RF-90 (U64)
(FOR U64 MODEL)
A-8322-873-A o MOUNTED CIRCUIT BOARD, RF-90 (U66)
(FOR U66 MODEL)
A-8322-865-A o MOUNTED CIRCUIT BOARD, RF-90 (U68)
(FOR U68 MODEL)

4 X-2542-174-1 o FRAME ASSY
5 X-2542-179-1 s ANTENNA ASSY (64) (FOR U64 MODEL)
X-2542-178-1 s ANTENNA ASSY (66) (FOR U66 MODEL)
X-2542-177-1 s ANTENNA ASSY (68) (FOR U68 MODEL)

6 1-750-551-11 o CONNECTOR, XLA 3P
  7 2-545-692-01 s SPRING (HOT), BATTERY
  8 2-545-696-01 s SCREW (S) (M1.7X8)
  9 2-545-770-01 s SHAFT (DIA. 1.6X32)
10 2-545-771-01 o SHEET (PWR)

11 2-545-773-01 o INSULATING SHEET, FRAME
12 2-545-774-01 s RING
13 2-545-775-01 s SPRING (RING), COIL
14 2-545-776-01 o SCREW (CASE), SWITCHING
15 2-545-780-01 s TAPPING (DIA. 1.7X2.2)

16 2-545-781-01 s TERMINAL (LID), BATTERY
17 2-545-782-01 s SCREW (LID), SWITCHING
18 2-545-785-01 s LID, BATTERY
19 2-545-787-01 o BRACKET, CONNECTOR
20 2-545-788-01 o PLATE, LIGHT GUIDE

21 2-545-789-01 o CASE (FRONT)
22 2-545-790-01 o CASE (REAR)
23 2-545-792-01 o PANEL, CONTROL
24 2-545-805-01 s +P 2X3.5
25 2-545-818-01 s SHEET, COPPER LEAF

26 2-545-819-01 s SHEET, ABSORPTION
27 2-545-819-11 s SHEET, ABSORPTION
28 2-545-821-01 s B TITE 2X4
29 3-880-990-00 s SCREW,FLAT (+) 1.7X3 (STEEL)

Screws/Washers
7-624-104-04 s STOP RING,E-2

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Summary of Contents for WRT-808A

Page 1: ...UHF SYNTHESIZED TRANSMITTER WRT 808A SERVICE MANUAL U Model 1st Edition Printed in Japan Sony Corporation 1999 7 11 Broadcasting Professional Systems Company 1999 WRT 808A U E 9 976 875 01 ...

Page 2: ...erden 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 ré...

Page 3: ...imum Frequency Deviation Check 3 7 3 2 6 Distortion Ratio Check 3 7 3 2 7 Input Level Control Check 3 8 3 2 8 AF PEAK and POWER BATT Indicators Check 3 9 3 2 9 S N Check 3 10 3 2 10 Frequency Characteristics Check 3 11 3 2 11 Tone Signal Adjustment 3 11 3 2 12 Battery Alarm Signal Check 3 13 3 2 13 Spurious Emissions Check 3 15 3 2 14 Occupied Band Width Check 3 16 4 Semiconductor Pin Assignments ...

Page 4: ...2 WRT 808A U 7 Board Layouts and Schematic Diagrams 7 1 Board Layouts 7 1 AF 27 7 1 RF 90 7 1 7 2 Schematic Diagrams 7 2 AF 27 7 2 RF 90 7 3 ...

Page 5: ...t on or near heat sources such as lighting equipment power amplifiers or in a place subject to direct sunlight or excessive moisture In such places the external finish or internal parts of the unit may be damaged If the unit is used in a very humid or dusty place or in a place subject to an active gas clean its surface as well as the connectors with a dry soft cloth soon after use Lengthy use of t...

Page 6: ...30Aa WRT 860A WRT 867Aa The WRT 808A can be used with the WRR 800A 801A UHF synthesized Diversity Tuner and also can be used with the WRR 820A 840A 850A 855A UHF Synthesized Diversity Tuner Sony 800 MHz band system models 8US The transmitter can operate on two LR6 size AA alkaline batteries continuously for about 4 hours at 25 C 77 F Installing the batteries Power Supply 1 Turn the battery compart...

Page 7: ... 720 710 etc 11US Use of RF power output switch The RF power output switch located inside of the battery compartment selects the RF power output either 50 mW or 10 mW In normal use set the switch to 50 factory preset position 50 mW output is suitable for optimum transmission over long working distance 10 mW output will be suitable for multi channel operation to eliminate the interference Use of in...

Page 8: ...5 67 09 789 125 67 33 792 125 66 10 783 250 66 34 786 250 67 10 789 250 67 34 792 250 66 11 783 375 66 35 786 375 67 11 789 375 67 35 792 375 66 12 783 500 66 36 786 500 67 12 789 500 67 36 792 500 66 13 783 625 66 37 786 625 67 13 789 625 67 37 792 625 66 14 783 750 66 38 786 750 67 14 789 750 67 38 792 750 66 15 783 875 66 39 786 875 67 15 789 875 67 39 792 875 66 16 784 000 66 40 787 000 67 16 ...

Page 9: ...in frame assembly Case rear Battery spring assembly Main frame assembly Battery spring assembly AF 27 mounted PC board Switching screw case CN301 Case rear assembly Case rear Sheet PWR P2 x 3 5 Switching screw lid Battery lid assembly Case front Light guide plate M1 7 x 8 M1 7 x 8 to page 2 2 ...

Page 10: ...crew 1 7 x 3 RF 90 mounted PC board AF 27 mounted PC board CN103 Absorption sheet B2 x 4 Frame assembly Connector assembly Connector bracket XLA 3P connector Coil spring ring Ring XLR 3P connector male Tool required XLR 3P connector male Sony Part No 1 563 030 21 RF 90 mounted PC board AF 27 mounted PC board Frame assembly XLA 3P connector ...

Page 11: ...r male from the connector assembly Attuch the XLR 3P connector male securely to the connector assembly GRY WHT RED BLK XLA 3P connector Connector bracket Turn the harness five turns Supplied with XLA 3P connector 2 Copper leaf sheet Absorption sheet 3 LED D502 D503 Copper leaf sheet Attuch the copper leaf sheet as shown in the figwre Frame assembly Align Absorption sheet Shield plate A Shield plat...

Page 12: ......

Page 13: ... HEWLETT with Power sensor PACKARD 8482A or equivalent 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 d...

Page 14: ...idth Check n 0 dBV 1 Vrms 0 dBm 0 775 Vrms Preparation 1 When adjustments are performed remove the Main frame assembly with battery terminal from WRT 808A unit Refer to the Section 2 Service Overview for removal 2 Peel off the copper leaf sheet from the main frame assembly 3 Connect the MM SMA J connector J 6402 480 A with SMA BNC J connector J 6402 490 A to the an tenna connector CN402 on the RF ...

Page 15: ...ply connection is completed set the power switch S301 to ON and check the level on DC ammeter DC ammeter indication level 160 to 200 mA Adjustment Location 10 50 MIC input CN101 AF PEAK D503 CN402 RF output CT301 carrier freq RF 90 Board S505 S504 RV101 Input level control Channel select CT401 RF power RV401 RF power POWER BATT D502 TP201 RV201 Tone signal RV202 Ref frequency dev S401 RF power out...

Page 16: ...pecification Carrier frequency mentioned in the table below WRT 808A Carrier frequency U64 model 776 125 MHz 1 kHz U66 model 788 125 MHz 1 kHz U68 model 800 125 MHz 1 kHz Adjustment 1CT301 RF 90 Board B side 3 2 1 Power Supply Voltage Check Equipment and Tools Required DC power supply DC output voltage 3 0 0 1 V dc DC ammeter DC volt meter or Digital multimeter Switch and Control Setting The follo...

Page 17: ... output switch S401 50 mW Input LEVEL control RV101 _60 0 dB attenuation Turn the RV101 clockwise fully Power meter MM SMA J connector with SMA BNC J connector CT401 RV401 CN402 Power sensor Procedure 1 Connect the power meter with power sensor to the an tenna connector CN402 with MM SMA J and SMA BNC J connectors 2 Adjust 1CT401 so that the power meter reading meets the following specification Sp...

Page 18: ...5 01 channel 776 125 MHz U66 model 67 01 channel 788 125 MHz U68 model 69 01 channel 800 125 MHz RF power output switch S401 50 mW Input LEVEL control RV101 _60 0 dB attenuation Turn the RV101 clockwise fully Procedure 1 Input 1 kHz _60 dBV _57 8 dBm signal to the MIC input connector CN101 2 Adjust 1RV202 so that the frequency deviation for the modulation analyzer reading meets the following speci...

Page 19: ...F power output switch S401 50 mW Input LEVEL control RV101 _60 0 dB attenuation Turn the RV101 clockwise fully Procedure 1 Input 1 kHz _24dBV _21 8 dBm signal to the MIC input connector CN101 with Mic input cable 2 Check that the frequency deviation for the modulation analyzer reading meets the following specification Specification Frequency deviation 40 kHz 3 kHz 3 2 6 Distortion Ratio Check Equi...

Page 20: ...4 Reads the indication on the audio analyzer level meter 5 Set the SENSITIVITY on the audio analyzer level meter so that the audio analyzer level meter reads 0 dB 6 Turn the RV101 Input LEVEL control counterclock wise fully 7 Check that audio analyzer level meter reading is _26 dB Indication level is _26 dB as compared with the read level of procedure 5 above 2 _1 2 _1 Switch and Control Setting T...

Page 21: ... from the audio ana lyzer oscillator and check that the output level of the oscillator is as follows when the AF PEAK indicator LED D503 lights AF PEAK indicator LED Audio analyzer oscillator D503 MIC input connector input level Goes out Less than _60 dBV _57 8 dBm 2 0 dB Lights in green More than or equal to _60 dBV _57 8 dBm 2 0 dB Lights in red More than or equal to _24 dBV _21 8 dBm 2 0 dB POW...

Page 22: ...annel se lect switches S504 and S505 Transmitting Channel setting U64 model 65 01 channel 776 125 MHz U66 model 67 01 channel 788 125 MHz U68 model 69 01 channel 800 125 MHz RF power output switch S401 50 mW Input LEVEL control RV101 _60 0 dB attenuation Turn the RV101 clockwise fully 2 1 Short circuit XLR 3Pin male wiring side 3 Procedure 1 Connect the audio analyzer level meter to the AF OUT con...

Page 23: ...t the SENSITIVITY on the audio analyzer level meter so that the audio analyzer level meter reads 0 dB 6 Switch the oscillation frequency for the audio analyzer os cillator from 1 kHz to 100 Hz 7 Check that audio analyzer level meter reading is 0 1 0 dB 8 Next switch the oscillation frequency for the audio analyzer oscillator from 100 Hz to 10 kHz 9 Check that the reading for the audio analyzer lev...

Page 24: ...kHz div 29 1 dB 20 dBm Procedure n Perform the checking with the Mic input connector CN101 short circuit 1 Set the spectrum analyzer as follows CENTER FREQUENCY fc U64 model 776 125 MHz U66 model 788 125 MHz U68 model 800 125 MHz REFERENCE LEVEL 20 dBm FREQUENCY SPAN 200 kHz 20 kHz DIV RBW resolution band width 3 kHz VBW video band width 1 kHz ATT 20 dB 2 Adjust 1RV201 so that level between carrie...

Page 25: ...cedure n Perform the checking with the MIC input connector CN101 short circuited 1 Set the spectrum analyzer as follow CENTER FREQUENCY fc U64 model 776 125 MHz U66 model 788 125 MHz U68 model 800 125 MHz REFERENCE LEVEL 20 dBm FREQUENCY SPAN 200 kHz 20 kHz DIV RBW resolution band width 3 kHz VBW video band width 1 kHz ATT 20 dB 2 Decrease gradually the DC output voltage of the DC regulated power ...

Page 26: ...DE EMPHASIS OFF 2 Set the DC output voltage of DC power supply to 2 0 0 1 V so that battery alarm signal goes on TP201 Tweezers Bridge the TP201 and frame GND with tweezers 10 50 TP201 Frame Frame 3 While the TP201 is short circuited to the frame GND with a tweezers etc TONE signal OFF check that frequency counter resolution 0 1 Hz reading is 32 782 kHz 1 Hz 2 1 Short circuit XLR 3Pin male wiring ...

Page 27: ... channel 776 125 MHz U66 model 67 01 channel 788 125 MHz U68 model 69 01 channel 800 125 MHz RF power output switch S401 50 mW Input LEVEL control RV101 _60 0 dB attenuation Turn the RV101 clockwise fully Spectrum analyzer MM SMA J connector with SMA BNC J connector CN402 Procedure 1 Set the spectrum analyzer as follows CENTER FREQUENCY 5 0 GHz REFERENCE LEVEL 20 dBm FREQUENCY SPAN 10 GHz 1 GHz DI...

Page 28: ...ication Bandwidth 100 kHz or less 3 2 14 Occupied Band Width Check Equipment and Tools DC power supply DC output Voltage 3 0 0 1 Vdc DC ammeter Audio analyzer Spectrum analyzer MM SMA J connector Part No J 6402 480 A SMA BNC J connector Part No J 6402 490 A Connections Switch and Control Setting The following setting is to be perform with the channel select switches S504 and S505 Transmitting Chan...

Page 29: ... 2 XN4504 TX 4 2 The semiconductors in the manual are listed by equivalent types Thus the external view or the index mark indication may differ from the actual type In some cases incompatible types are also listed therefore when a part is to be replaced also refer to the Spare Parts section Pin assignments and block diagrams are based on the IC manufacturer s data book Index CXA1786N T4 4 3 HD6473...

Page 30: ...D B GREEN SPR 39MVWFMN 2SA1965 TL TOP VIEW 2SC3607 TE12L TOP VIEW TOP VIEW 2SC4738 YGR TE85L 2SC4919 2SC4919 TL 2SD2216 Q TOSHIBA FMMT617TA B E E C TOP VIEW WIDE 2SC5015 T1 R1 R2 TOP VIEW DTA144EE DTA144EE TL R1 R2 TOP VIEW 5 1 4 3 2 R1 R2 R2 R1 5 4 3 1 2 TOP VIEW 6 5 4 1 2 3 5 6 4 1 2 3 TOP VIEW DTC143ZE R1 4 7 k R2 47 k DTC143ZE TL UMG8 TL R1 4 7 k R2 47 k UMG8 TR XN4504 XN4504 TX ...

Page 31: ...L OUTPUT FOR DIVIDING SIGNAL OF COUNTER OSCI OSCO Vp Do1 Do2 LD ØP ØR CK DATA LAT PS FC TEST NC NC NC GND VCC PLL FREQUENCY SYNTHESIZER 1 1 GHz BAND TOP VIEW MC33077DR2 MOTOROLA 1 2 3 4 8 7 6 5 VEE VCC _ _ DUAL OPERATIONAL AMPLIFIERS DUAL SUPPLY TYPE TOP VIEW NJM2107F JRC NJM2107F TE2 V_ V _ 1 2 3 5 4 INPUT _INPUT OUTPUT SINGLE OPERATIONAL AMPLIFIER TOP VIEW GND LX 5 4 1 2 3 4 3 1 2 LX EXT CE OUT ...

Page 32: ...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 1 2 GND 3 A B Y A B Y Y A B A B A 0 0 1 1 B 0 1 0 1 Y 1 1 1 0 0 1 LOW LEVEL HIGH LEVEL 5 VDD 4 2 1 4 C MOS 2 INPUT NAND GATE TOP VIEW TC4S11F TOSHIBA TC4S11F TE85R 1 INH 0 0 1 A 0 1 x ch0 ch1 OPEN 2 3 OPEN INH VEE ch1 ch0 2 3 C A 6 7 1 5 GND 4 8 VDD 6 7 5 ON CHANNEL CONT INPUT C MOS 2 CHA...

Page 33: ... Off On H 52 Poff IN Power off detection Off L 54 LEDAR OUT Audio Peek Level Ind Red On L 55 LEDAG OUT Audio Reference Level Ind Green On L 56 LEDBT OUT Battery Ind Red On L 57 LED OUT Power Ind Green On L 59 Ground 64 CK OUT Clock for PLL 65 LAT OUT PLL latch 66 RFM OUT RF Mute Control Mute on H 68 LD IN Lock detection for PLL Lock L 70 DATA OUT Data for PLL 72 Avcc IN Power supply 5 V 73 APO IN ...

Page 34: ......

Page 35: ...used in the case of replacement 2 Standardization of Parts Some repair parts 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 ...

Page 36: ...696 01 s SCREW S M1 7X8 9 2 545 770 01 s SHAFT DIA 1 6X32 10 2 545 771 01 o SHEET PWR 11 2 545 773 01 o INSULATING SHEET FRAME 12 2 545 774 01 s RING 13 2 545 775 01 s SPRING RING COIL 14 2 545 776 01 o SCREW CASE SWITCHING 15 2 545 780 01 s TAPPING DIA 1 7X2 2 16 2 545 781 01 s TERMINAL LID BATTERY 17 2 545 782 01 s SCREW LID SWITCHING 18 2 545 785 01 s LID BATTERY 19 2 545 787 01 o BRACKET CONNE...

Page 37: ...5 3 WRT 808A U 14 20 21 23 26 5 29 27 6 12 13 19 2 25 28 7 7 22 8 8 24 29 29 3 1 10 4 11 15 16 9 17 18 STOP RING E2 29 Suppied with 6 ...

Page 38: ...10V C215 1 113 600 11 s CAPACITOR CHIP TANTALUM 2 2MF C301 1 117 887 11 s CAPACITOR TANTALUM 220MF 6 3V C302 1 117 887 11 s CAPACITOR TANTALUM 220MF 6 3V C303 1 115 170 11 s CAPACITOR TANTAL SMD 4 7MF 10V C304 1 162 977 11 s CAPACITOR CERAMIC 1800P 50V B C305 1 162 970 11 s CAPACITOR CERAMIC 0 01MF 25V B AF 27 BOARD Ref No or Q ty Part No SP Description C306 1 162 923 11 s CAPACITOR CERAMIC 47PF 5...

Page 39: ...RF 90 FOR U64 MODEL 1pc X 2542 177 1 s ANTENNA ASSY 68 FOR U68 MODEL 1pc X 2542 178 1 s ANTENNA ASSY 66 FOR U66 MODEL 1pc X 2542 179 1 s ANTENNA ASSY 64 FOR U64 MODEL C401 1 104 851 11 s CAPACITOR TANTALUM 10MF 10V C402 1 115 416 11 s CAPACITOR CERAMIC 1000PF 25V C403 1 110 569 21 s CAPACITOR CHIP TANTAL 47MF 6 3 C404 1 162 970 11 s CAPACITOR CERAMIC 0 01MF 25V B C405 1 165 176 11 s CAPACITOR CERA...

Page 40: ...1608 R402 1 216 833 11 s RESISTOR CHIP 10K 1 16W 1608 R403 1 216 845 11 s RESISTOR CHIP 100K 1 16W 1608 RF 90 BOARD Ref No or Q ty Part No SP Description R404 1 216 841 11 s RESISTOR CHIP 47K 1 16W 1608 R405 1 216 845 11 s RESISTOR CHIP 100K 1 16W 1608 R406 1 216 841 11 s RESISTOR CHIP 47K 1 16W 1608 R407 1 216 809 11 s RESISTOR CHIP 100 1 16W 1608 R408 1 216 821 11 s RESISTOR CHIP 1 0K 1 16W 1608...

Page 41: ...5 7 WRT 808A U FRAME Ref No or Q ty Part No SP Description 1pc 1 750 551 11 o CONNECTOR XLA 3P Ref No or Q ty Part No SP Description 1pc 3 866 919 12 s MANUAL INSTRUCTION 5 4 Accessories Supplied ...

Page 42: ......

Page 43: ...1 POWER S301 DETECTOR IC104 2 2 BUFF IC201 6 6 LPF FL101 ATT 0 50 dB XLR CONNECTER CN101 CN103 AF 27 BOARD RF 90 BOARD PRE EMPHASIS C130 R122 MIC AMP IC101 1 2 BUFF AMP IC101 2 2 AMP IC103 1 2 AMP IC103 2 2 VOLTAGE REGULATOR IC401 VOLTAGE CONTROL Q402 Q403 D403 AF SWITCH IC203 MOD COM PRESSOR IC104 1 2 POWER CONTROL Q302 D302 Q304 DC DC CONVERTER IC301 Q301 Q303 VCC 5 V VCO CP401 LPF LD DATA CK LA...

Page 44: ......

Page 45: ...RT 808A U 7 1 AF 27 RF 90 AF 27 RF 90 Section 7 Board Layouts and Schematic Diagrams 7 1 Board Layouts AF 27 B SIDE 1 674 806 12 RF 90 B SIDE 1 674 807 12 AF 27 A SIDE 1 674 806 12 RF 90 A SIDE 1 674 807 12 ...

Page 46: ... 0 01 25V B 0 01 25V B 0 01 25V B 0 01 25V B 0 01 25V B 6 8k 1 16W 0 5 10 1 16W 330 1 16W 1k 1 16W 1k 1 16W 1k 1 16W 1 2k 1 16W 1 2k 1 16W 1 5k 1 16W 2 2k 1 16W 2 7k 1 16W 4 7k 1 16W 4 7k 1 16W 4 7k 1 16W 4 7k 1 16W 4 7k 1 16W 4 7k 1 16W 4 7k 1 16W 8 2k 1 16W 10k 1 16W 10k 1 16W 33k 1 16W 33k 1 16W 33k 1 16W 33k 1 16W 47k 1 16W 47k 1 16W 47k 1 16W 100k 1 16W 100k 1 16W 100k 1 16W 100k 1 16W 100k 1...

Page 47: ...00k 100k 100k 10 10V TA A 10 10V TA A 3p TEST RESET 5p 50V CH 22p 50V CH 22p 50V CH 33p 50V CH 0 01 25V B 0 01 25V B 0 01 25V B 0 01 25V B 0 01 25V B 0 01 25V B 0 01 25V B 0 01 25V B 1 8k 1 16W 2 2k 1 16W 10k 1 16W 22k 1 16W 47k 1 16W 47k 1 16W 47k 1 16W 100k 1 16W 100k 1 16W 100k 1 16W 100k 1 16W 1M 1 16W 51 1 16W 0 047 16V B 0 047 16V B 0 047 16V B 1000p 25V CH 47k 1 16W 100k 1 16W 18k 1 16W 47µ...

Page 48: ......

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