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TUNER BASE UNIT
MB-806A
CE Model
UHF SYNTHESIZED TUNER UNIT
WRU-806A
CE Model
AU Model
SERVICE MANUAL
1st Edition
Printed in Japan
Sony Corporation
1999. 6 11
Broadcasting & Professional Systems Company
©1999
MB-806A (CE)
WRU-806A (CE, AU) E
9-976-880-01


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! WARNING
This manual is intended for qualified 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.
! WARNUNG
Die Anleitung ist nur für qualifiziertes Fachpersonal bestimmt.
Alle Wartungsarbeiten dürfen nur von qualifiziertem Fachpersonal ausgeführt 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 réduire les risques de décharge électrique, d'incendie ou de blessure n'effectuer que les
réparations indiquées dans le mode d'emploi à moins d'être qualifié pour en effectuer d'autres.
Pour toute réparation faire appel à une personne compétente uniquement.
MB-806A (CE)
WRU-806A (CE, AU)


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1
MB-806A (CE)
WRU-806A (CE, AU)
Table of Contents
1. Operating Instructions
2. Service Overview
2-1.
Boards Location .......................................................................................... 2-1
2-2.
Precaution in Wiring Harness ..................................................................... 2-1
2-3.
Error Messages ............................................................................................ 2-2
2-4.
Setting / Release of Muting Function .......................................................... 2-2
2-5.
Service Information for WRU-806A .......................................................... 2-3
2-5-1.
WRU-806A Removal ................................................................. 2-3
2-5-2.
WRU-806A Checking ................................................................ 2-3
3. Electrlcal Alignment
3-1.
Preparation .................................................................................................. 3-1
3-1-1.
Equipment and Tools ................................................................. 3-1
3-2.
Adjustments ................................................................................................. 3-2
3-2-1.
WRU-806A Tuner Unit Adjustment .......................................... 3-3
3-2-2.
Overall Characteristics Check .................................................... 3-8
4. Semiconductor Pin Assignments
5. Spare Parts
5-1.
Notes on Repair Parts .................................................................................. 5-1
5-2.
Exploded Views .......................................................................................... 5-2
5-3.
Electrical Parts List ..................................................................................... 5-4
5-3-1.
MB-806A ................................................................................... 5-4
5-3-2.
WRU-806A .............................................................................. 5-11
5-4.
Accessories Supplied ................................................................................ 5-17
6. Block Diagrams
MB-806A Overall Block Diagram .............................................................. 6-1
WRU-806A Tuner Unit Block Diagram ..................................................... 6-2


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2
MB-806A (CE)
WRU-806A (CE, AU)
7. Board Layouts
7-1.
MB-806A
CN-1907 Board ......................................................................................... 7-1
CN-1908 Board ......................................................................................... 7-1
MB-871 Board .......................................................................................... 7-2
7-2.
WRU-806A
DP-305 Board ........................................................................................... 7-4
RF-92 Board ............................................................................................. 7-4
8. Schematic Diagrams
8-1.
MB-806A
CN-1907 Board ......................................................................................... 8-4
CN-1908 Board ......................................................................................... 8-3
MB-871 Board .......................................................................................... 8-1
8-2.
WRU-806A
DP-305 Board ........................................................................................... 8-5
RF-92 Board ............................................................................................. 8-6


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1-1
MB-806A
(CE)
WRU-806A
(CE,
AU)
Section
1
Operating
Instructions
This
section
is
extracted
from
operation
manual.
MB-806A
(CE)
© 1999 by Sony Corporation
[CE] [AU]
Tuner Base Unit
3-867-235-21(1)
MB-806A
Operating Instructions
GB
Bedienungsanleitung
DE
Wireless Channel Lists/Übertragungskanallisten
http://getMANUAL.com