Sony WRR-800A Service Manual Download

Page: 43 / 46

7-3

WRR-800A

MB-786, VR-245

RE-157

BOARD NO. 1-666-755-21

VR-245

BOARD NO. 1-666-754-21

MB-786

BOARD NO. 1-666-752-21
WRR-800/800A

B-WRR800A-MB786/M

[dBu]

28.0

27.5

23.0

IC1101

(3)

IC1101

(1)

IC1101

(8)

IC1101

(7)

IC1103

(1)(7)

AF OUT

AF LEVEL DIAGRAM (MB-786 board)

HOT

COLD

VR:MAX

Note:

The AF level shows the value when the following reference signal is

supplied to the ANTENNA A and B IN connectors from a SSG.

RF : Level input 60 dB

FM :

5 kHz deviation at 1 kHz modulation

0 dB

= 1

V(at no load)

0 dB

113 dBm(0 dBm = 1 mW, 50

load)

0 dBu = 0.775 Vms

RV1201

CN1002

C1103

C1104

C1105

C1108

C1109

J1101

C1106

C1107

C1110

C1111

Q1101

Q1103

Q1104

Q1102

TP1005

TP1006

TP1007

TP1009

TP1010

C1037

C1117

C1119

C1118

C1120

C1121

C1124

C1123

C1122

C1125

CN1201

R1102

R1103

R1105

R1106

R1107

R1111

R1117

R1115

R1113

C1112

R1109

R1108

R1112

R1110

R1114

R1118

R1116

C1113

C1115

R1104

R1101

IC1101(2/4)

IC1101(1/4)

IC1101(3/4)

IC1102(2/2)

C1114

IC1102(1/2)

IC1103(1/2)

IC1103(2/2)

CN1101

IC1101(4/4)

C1032

R1119

R1120

R1121

D1101

D1102

R1122

R1123

10k

0.1µ

3300p

470p

0.1µF

DTC323TK

0.1µF

560p

330p

0.01µ

1000p

180p

100

1.8k

10k

12k

5.1k

150

5.1k

47µ

6.3V

12k

5.1k

12k

5.1k

150

47µ

6.3V

47µ
25V

15k

4.7k

µPC4574G2

NJM4560M

47µ
25V

NJM4560M

NJM5532M

µPC4574G2

10µ
16V

10k

680

1SS362

VR_IN

VR_OUT

GND

AF_OUT

AF_GND

VR_IN

VR_OUT

GND

TO/FROM

CN1102,CN-1598BOARD

MB-786

VR-245

BOARD NO.1-666-752-21

NC:NO MOUNT

BOARD NO.1-666-754-21

TUNER OUTPUT

12V

-12V

Summary of Contents for WRR-800A

Page 1: ...UHF SYNTHESIZED DIVERSITY TUNER WRR 800A SERVICE MANUAL AU Model ...

Page 2: ...d service personnel only To reduce the risk of electric shock fire or injury do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so Refer all servicing to qualified service personnel ...

Page 3: ...LECTRICAL ALIGNMENT 3 1 PREPARATION 3 1 3 1 1 Equipment and Tools 3 1 3 2 ADJUSTMENT 3 2 3 2 1 Tuner Unit Adjustment 3 3 3 2 2 Overall Characteristics Check 3 7 4 SEMICONDUCTOR PIN ASSIGNMENTS 5 BLOCK DIAGRAM 6 SPARE PARTS 6 1 NOTES ON REPAIR PARTS 6 1 6 2 EXPLODED VIEW AND PARTS LIST 6 2 6 3 ELECTRICAL PARTS LIST 6 4 6 4 SUPPLIED ACCESSORIES 6 6 7 SCHEMATIC DIAGRAMS AND BOARD LAYOUTS MB 786 Board...

Page 4: ......

Page 5: ...g in very humid or dusty places because such use may shorten the life of the unit To avoid degradation of the signal to noise ratio do not use the unit in noisy places or in locations subject to vibration such as the following near electrical equipment such as motors transformers or dimmers near air conditioning equipment or places subject to direct air flow from an air conditioner near public add...

Page 6: ...R 850A 66 WRR 860A 66 67 799 250 to 805 500 3 Precautions 2 Overview 3 Features 3 System Configuration 4 Wirelss Channels Selectable 5 Wireless Channel Lists 6 Location of Parts and Controls 9 Front Panel 9 Display 10 Rear Panel 11 Operation 12 Muting Functions 13 Channel Setting 13 Error Messages 15 Specifications 16 Table of Contents Overview The WRR 800A is a reliable UHF synthesized diversity ...

Page 7: ... 797 125 66 41 797 250 66 42 797 375 66 43 797 500 66 44 797 625 66 45 797 750 66 46 797 875 66 47 798 000 66 48 798 125 66 49 798 250 66 50 798 375 66 51 798 500 Wirelss Channels Selectable 5 The unit stores 13 groups of selectable channels groups 00 102 channels 11 12 channels 12 9 channels 13 9 channels A1 8 channels A2 6 channels A3 6 channels L1 6 channels L2 6 channels M1 6 channels M2 5 cha...

Page 8: ... 750 Wirelss Channels Selectable 7 Group A2 6 channel group Use when TV channel 66 is on the air Group A3 6 channel group Use when TV channel 67 is on the air WLChannel Frequency MHz 66 06 792 875 66 15 794 000 66 21 794 750 66 32 796 125 66 46 797 875 66 50 798 375 WLChannel Frequency MHz 67 06 799 875 67 15 801 000 67 21 801 750 67 32 803 125 67 46 804 875 67 50 805 375 Group 11 12 channel group...

Page 9: ... frequency indicator 4 AF audio frequency indication The indicator lights and the indication appears when the audio output level is higher than the reference level 6 GP CH group channel indication Shows the reception channel group and respective channel number Pressing the GP button changes this indication to the frequency indication Location of Parts and Controls 7 RF indications 6 GP CH indicati...

Page 10: ...led outside noise or radio wave may disrupt the transmission of certain channels To select a channel under this circumstance turn off the wireless microphone or transmitter Then select a channel at which the RF indicator is off A channel free from noise or radio wave interference is selected Set the same channel on the microphone or transmitter ANTENNA A B Audio mixer amplifier AC power adaptor UH...

Page 11: ... the following figure To change the indication continuously press and hold down the GP button GP CH GP CH 13 Muting Functions This unit has the following three muting functions which work in combination 1 Muting by RF input level As sufficient S N for the audio output may not be obtained if no RF signal is received or the RF input level is low the audio output can be muted when the RF input level ...

Page 12: ...x 1 6 kg 57 oz Accessories supplied AC power adaptor 1 Antennas 2 Operating Instructions 1 Design and specifications are subject to change without notice Specifications Printed in Japan 15 Apart from the normal indications the following error messages may appear on the display To change a frequency press the CH button while keeping the SET button pressed A higher frequency will be displayed Press ...

Page 13: ... present parts by routing the harnesses properly or using purse locks Therefore when the boards are replaced or parts are replaced be sure to return the harnesses to their original locations see the following illustration When replacing a board or when replacing a part turn the POWER switch OFF and unplug the power cord from the AC inlet 2 1 BOARDS LOCATION MB 786 CN 1598 RE 157 Tuner Uniit VR 245...

Page 14: ...ction of transmitter or receiver WRR 800A signal output is muted because the To check the characteristics perform 3 2 2 Overall Characteristic Confirmation receiver received a tone signal other If there are out of characteristics tuner unit may defect than 32 768 kHz signal Replace the tuner unit then perform 3 Electrical Alignment 2 4 SERVICE FUNCTION Set or release the following functions by ope...

Page 15: ...3 from the side panel and remove the top panel 2 Remove the screw BVTT2 6 x 5 3 Desolder the copper leaf from the lid of the tuner unit 4 Pull out the tuner unit in the arrow direction Tuner unit WRU 801A Top panel BTT M3 Copper leaf BTT M3 BTT M3 BTT M3 BVTT 2 6 x 5 ...

Page 16: ...y WRR 801A 2 Check the fault with a quality WRR 801A If there is no fault it is considered that the tuner unit is no longer defective Restore the tuner unit to its original WRR 800A repair unit Check all components other than the tuner unit such as MB 786 board CN 1598 board harness etc then fix a faulty section If there is a fault tuner unit is defective To fix the tuner unit perform 3 Electrical...

Page 17: ...B equivalent RF millivolt meter Frequency 10 kHz to 1000 MHz MEGURO MV 19B C with 50 Z termination prove chip MP 3109 or equivalent Level meter Frequency 20 Hz to 100 kHz Noise meter Frequency 10 Hz to 500 kHz MEGURO MN 445B or equivalent Filter included A weighted filter Tracking generator Frequency 100 kHz to 2 GHz ADVANTEST TR4153A or equivalent Function generator 32 768 kHz and 32 782 kHz 1 Hz...

Page 18: ... on Adjustment The RF level of the input signal the output level of the signal generator for adjustment is expressed as an open ended voltage in unit dBu 0 dBu 1 uV The adjustment is to be performed by calibrating the output level of the signal generator as shown below Calibration method 1 Connect the RF millivoltmeter to the signal generator as shown in the figure below 2 Adjust the level of the ...

Page 19: ...al generator to the ON 7 Check first that indication L of AC1L on the LCD has disappeared and then press the SET button on the front panel n If the L indication does not disappear from the LCD on A area refer to the previous procedure 5 when the RF input level is lower than the reference level or H is displayed when the RF input level is higher than the reference level perform the following adjust...

Page 20: ...ont panel 17 Indication on the LCD appears as follows LCD 18 Connect the signal generator to the ANTENNA A connector with DC cut fixture Set the FREQUENCY carrier frequency of the signal generator as follow FREQUENCY carrier frequency 804 000 MHz 19 Check first that indication L of AC3L on the LCD has disappeared and then press the SET button on the front panel 20 Indication on the LCD appears as ...

Page 21: ...uency 1 kHz DEVIATION Frequency deviation 5 kHz Step 2 Adjustment 1 Connect the audio analyzer to the TUNER OUTPUT connector via MIC amp 2 Connect the signal generator to the ANTENNA A IN connector 3 Adjustment ANTENNA A IN side adjustment Specification Output level level meter indication level _20 dBm 0 5 dB at 600 Z loaded Adjustment 1RV202 RF board Tuner unit 4 Connect the signal generator to t...

Page 22: ...rocedure Step 1 S N check Perform the 2 S N Check of Section 3 2 2 Overall Characteristics Check When checking the S N at 15 dBuVEMF _98 dBm note the ANNTENA A or B IN connector which shows the better S N Step 2 Adjustment 1 Connect the signal generator to the ANTENNA A or B IN connector which showed the better S N at the input of 15 dBuVEMF _98 dBm under Step 1 S N check Set the signal generator ...

Page 23: ...characteristics check according to the following procedure Procedure 1 Output level check 2 S N check 3 Frequency characteristic check 4 Distortion check 5 RF Level indicator RF indicator check 6 AF Level indicator AF indicator check 7 Muting level check 8 BATT indicator check 9 Tone squelch check Equipment and Tools DC power supply 9 Vdc Signal generator Function generator Audio analyzer Mic amp ...

Page 24: ...equency deviation 5 kHz 5 Read the output level of the TUNER OUTPUT connector Audio analyzer indication level This level is specified to be 0 dB 6 Turn OFF the MODULATION of the signal generator No modulation 7 Check that output level of the TUNER OUTPUT is _62 dB or less S N is 62 dB or more with A weighted filter as compared with the level of procedure 5 above 8 Change the RF OUTPUT output level...

Page 25: ...tting Group 00 6601 channel 792 250 MHz Signal generator setting FREQUENCY carrier frequency 792 250 MHz 2 Channel setting Group 00 6751 channel 805 500 MHz Signal generator setting FREQUENCY carrier frequency 805 500 MHz 3 Frequency characteristic check Procedure 1 Set the WRR 800A as follows Channel setting Group 00 6701 channel 799 250 MHz VOL control MAX Muting OFF 2 Connect the audio analyzer...

Page 26: ...erator is as follows when the RF input level indicator lights RF level indicator green Signal generator output level lights in 25 dBuVEMF 5 dB 35 dBuVEMF 5 dB 45 dBuVEMF 5 dB 55 dBuVEMF 5 dB 5 Connect the signal generator to the ANTENNA B IN connector and perform the procedure 4 above Lighting LCD Lighting LCD Lighting LCD Lighting LCD 6 Set the channel setting and FREQUENCY carrier frequency of t...

Page 27: ...frequency of the signal generator as shown 1 and 2 below Perform the procedures 1 to 8 above for each channel setting 1 and 2 1 Channel setting Group 00 6601 channel 792 250 MHz Signal generator setting FREQUENCY carrier frequency 792 250 MHz 2 Channel setting Group 00 6751 channel 805 500 MHz Signal generator setting FREQUENCY carrier frequency 805 500 MHz 6 AF level indicator AF indicator check ...

Page 28: ...starts blinking after 3 seconds OFF BATT indicator LCD Blinking is stop BATT indicator LED Goes out 5 Connect the signal generator to the ANTENNA B IN connector and perform the procedures 3 and 4 above 9 Tone squelch check Procedure 1 Set the WRR 800A as follows Channel setting Group 00 6701 channel 799 250 MHz VOL control MAX Muting ON Normal mode 2 Connect the signal generator to the ANTENNA A I...

Page 29: ...738 YGR TE85L 2SD2216 Q TOSHIBA 2SJ377 TE16L 3SK239AXRTL MTD20N06HDL T4 UN9213 RN1104 TE85L SML 310DTT86 SML 310LTT86 SML 310MTT86 CONT 3 GND 2 V IN 1 R2 R2 R1 R1 4 3K V OUT V IN CONT GND 1 3 2 V REF V IN 3 5V to 36V V OUT 1 5V to 33V R2 4 3 V OUT VREF 1 1 26x 1 V R1 4 3K VREF 1 26V ADJUSTABLE VOLTAGE REGULATOR 1 2 3 4 8 7 6 5 VEE VCC _ _ DUAL OPERATIONAL AMPLIFIERS SINGLE SUPPLY TYPE TOP VIEW TYP...

Page 30: ... VEE VCC TYPE VCC 2 to 16V 2 to 18V 3 to 20V 5 to 12V 5 to 22 5V 2 5 to 18V 1 to 3 5V 2 to 20V 5 to 16V 062 072 082 4556A M5218 BA15218 33178 34182 TYPES 4580 TYPE 5532 TYPE CXA1297 TYPE M5219 M5220 TYPES MC33077DR2 NJM2100 TYPE OP 297 TYPE OTHERS VEE _2 to _16V _2 to _18V _3 to _20V _5 to _12V _5 to _22 5V _2 5 to _18V _1 to _3 5V _2 to _20V _5 to _16V _ _ DUAL OPERATIONAL AMPLIFIERS DUAL SUPPLY ...

Page 31: ... to 5 5V 2 GND 3 5 VDD 4 A A Y 2 4 Y A 0 1 Y 1 0 0 LOW LEVEL 1 HIGH LEVEL Y A C MOS INVERTER 0 0 0 0 0 0 0 0 1 CONTROL INPUTS 12 13 2 1 5 3 X0 X1 Y0 Y1 Z0 Z1 6 EN X Y Z 14 15 4 0 1 X LOW LEVEL HIGH LEVEL DON T CARE VEE VDD _ VEE 3V to 12V 7 VEE C 0 0 0 0 1 1 1 1 X B 0 0 1 1 0 0 1 1 X Y1 I O Y0 I O Z1 I O Z I O Z0 I O EN IN 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 Y I O X I O X1 I O X0 I O A IN B IN ...

Page 32: ......

Page 33: ...C1001 then output as 12 V from the voltage regulator IC1004 IC1005 Generated 12 V are used for the power of audio output amplifier IC1101 on the MB 786 board Also to generate 9 V converted 15 V is input to the voltage regulator IC1006 then obtained 9 V is supplied to the tuner unit Audio Block The audio signal AF output from the tuner unit is input to the MB 786 board through the CN 1598 board Sig...

Page 34: ...NNA A INPUT Q2101 J1702 ANTENNA B INPUT CN 1598 CN1102 CN111 TUNER UNIT POWER SWITCH TUNER OUTPUT J1101 MUTE VR 245 CN1001 IC1101 REG IC1005 IC1004 S1001 CN1003 DC 9V IN J1001 L1006 DC DC CONVERTER 12V REG REG 12V IC1101 CN1002 CN1004 IC1006 RE 157 CN1201 RV1201 CN1101 MB 786 IC1001 9V 15V 9V 9V ...

Page 35: ...changes or standardization of genuine parts This manual s exploded views and electrical spare parts list are indicating the part numbers of the standardized genuine parts at present 3 Stock of Parts Parts marked with o SP Supply Code column of the spare parts list are not normally required for routine service work Orders for parts marked with o will be processed but allow for additional delivery t...

Page 36: ... 22 22 15 22 22 16 24 10 7 1 18 20 18 6 5 17 6 23 13 13 4 3 12 14 14 Tuner unit Conpatible with WRU 801 801A BVTT3 x 6 BVTT3 x 6 BVTT 2 6 x 5 BVTT3 x 6 BVTT3 x 6 BVTT3 x 6 BVTT 3 x 6 22 K3 x 5 K3 x 5 K3 x 5 19 11 BVTT 2 x 4 BVTT2 x 4 1 1 2 2 9 8 21 25 ...

Page 37: ...2 o PRINTED CIRCUIT BOARD VR 245 10 1 666 755 12 o PRINTED CIRCUIT BOARD RE 157 11 1 771 182 11 s SWITCH POWER 12 1 783 026 11 s WIRE FLAT TYPE 33 CORE 13 2 545 180 01 o LID 14 2 545 186 01 o BTP 2X5 W2 15 2 545 188 01 o COVER 16 2 545 189 02 o RAIL 17 2 545 190 02 o PANEL FRONT 18 2 545 194 01 o FOOT 19 2 545 196 01 o BARRIER SW 20 2 545 206 01 o SPACER PB 21 2 545 363 01 s PLATE CONNECTION 22 2 ...

Page 38: ... 1 162 927 11 s CERAMIC CHIP 100PF 5 50V C1029 1 164 004 11 s CERAMIC CHIP 0 1uF 10 25V C1030 1 126 103 11 s ELECT 470uF 20 16V CN111 1 569 668 11 s CONNECTOR BB 10P C1031 1 128 400 11 s ELECT 47uF 20 25V C1032 1 124 779 00 s ELECT 10uF 20 16V L2101 1 414 461 41 s INDUCTOR 6 8nH 10 4GHz C1033 1 164 346 11 s CERAMIC 1uF 16V L2103 1 414 461 41 s INDUCTOR 6 8nH 10 4GHz L2201 1 414 461 41 s INDUCTOR 6...

Page 39: ...1 11 s METAL CHIP 150 5 1 16W IC1001 8 759 466 72 s IC MAX742CWP TE2 R1118 1 216 811 11 s METAL CHIP 150 5 1 16W IC1002 8 759 095 59 s IC M5237ML TP1 R1119 1 216 833 11 s METAL CHIP 10K 5 1 16W IC1004 8 759 175 30 s IC NJM78L12UA TE1 IC1005 8 759 712 00 s IC NJM79L12UA R1120 1 216 833 11 s METAL CHIP 10K 5 1 16W IC1101 8 759 141 05 s IC UPC4574G2 R1121 1 216 045 00 s METAL CHIP 680 5 1 10W R1122 1...

Page 40: ... 3 860 929 31 s MANUAL INSTRUCTION VR 245 BOARD Ref No or Q ty Part No SP Description 1pc 1 666 754 21 o PRINTED CIRCUIT BOARD VR 245 RV1201 1 237 790 11 s RES VAR CARBON 10K FRAME Ref No or Q ty Part No SP Description 1pc 1 562 576 11 s ADAPTER CONVERSION BNC PIN 1pc 1 771 182 11 s SWITCH POWER 1pc 1 783 026 11 s WIRE FLAT TYPE 33 CORE ...

Page 41: ...CHEMATIC DIAGRAMS AND BOARD LAYOUTS MB 786 A SIDE 1 666 752 21 MB 786 B SIDE 1 666 752 21 CN 1598 A SIDE 1 666 753 21 CN 1598 B SIDE 1 666 753 21 VR 245 A SIDE 1 666 754 21 RE 157 A SIDE 1 666 755 21 VR 245 B SIDE 1 666 754 21 RE 157 B SIDE 1 666 755 21 7 1 7 1 WRR 800A ...

Page 42: ...207 C1001 C1018 C1019 2SJ377 22µ RB411D MTD20N06HDL 10k 10k 2SC4738 10µ 16V 100 470µ 16V 3300p B 10µ 6 3V 2 2µ 10V 3300p B MAX742 1µ 16V 1µ 16V 470µ 16V 470µ 16V 470µ 16V 0 1µ F 0 1µ F 470µ 16V 470µ 16V 0 0 1 4700µ 25V NJM78L12UA NJM79L12UA 1SS355 1SS355 TC4S69F TC4S69F 47µ 25V SB07 03C SB07 03C EC10QS04 EC10QS04 22µ 2SB1202 220 1µF F 220 M5237ML 5 6k 150µ 150µ 0 01µ B 100µ 2200µ 25V 10k 12k 560 2...

Page 43: ...R1103 R1105 R1106 R1107 R1111 R1117 R1115 R1113 C1112 R1109 R1108 R1112 R1110 R1114 R1118 R1116 C1113 C1115 R1104 R1101 IC1101 2 4 IC1101 1 4 IC1101 3 4 IC1102 2 2 C1114 IC1102 1 2 IC1103 1 2 IC1103 2 2 CN1101 IC1101 4 4 C1032 R1119 R1120 R1121 D1101 D1102 R1122 R1123 10k 0 1µ B 0 1µ B 3300p B 470p CH 470p CH 0 1µF B 0 1µF B 0 1µF B 0 1µF B DTC323TK DTC323TK DTC323TK DTC323TK 0 1µF B NC NC NC NC N...

Page 44: ...301 R2401 C2102 C2202 C2103 R2107 R2109 R2117 R2119 R2108 R2118 C2203 C2211 J1702 J1701 22k 100p CH 2 2µ 16V 0 01µ F 1000p B 1000p B 1000p B 1000p CH 5p CH 100p CH 6 8n 6 8n 68k 33k 33k 10 10 100p CH 6 8n 2 2µ 16V 0 01µ F 68k 33k 33k 1000p B 1000p B 1000p B 10 1000p CH 5p CH 6 8n 10 100p CH 3SK239A 3SK239A 7p CH NC NC 100p CH 180 180 NC NC 100p CH 0 0 6p CH 6p CH 5p CH 33 33 33 33 27 27 6p CH 5p C...

Page 45: ......

Page 46: ...Sony Corporation Broadcasting Professional Systems Company WRR 800A AU E 9 976 859 01 Printed in Japan 1998 1 08 1998 Published by Global Support Promotion Dept ...

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