Table Of Contents - Sony XM-1252GTR Service Manual

XM-1252GTR
Note for Replacement of FET
Change the both channels of FETs at the output stage.
If one or both parts in the following combination is broken, the
service kit should be ordered.
Service kit part No.
Q108, 110
X-3381-586-1
Q208, 210
Q109, 111
X-3381-587-1
Q209, 211
Confirming the Operation
Please confirm the car audio unit works even if REM OUT is not
connected when you connect this set with the car audio unit by the
HIGH LEVEL input.
Notes on Chip Component Replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE
WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0 SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES
SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT.
NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES
SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL
OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
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TABLE OF CONTENTS

1. GENERAL
Location and Function of Controls .......................................... 3
Connections ............................................................................. 4
2. DISASSEMBLY
2-1. Cover Assy .......................................................................... 7
2-2. Top Plate Section ................................................................. 8
2-3. AMP Board Section ............................................................ 8
2-4. Front Panel .......................................................................... 9
2-5. LED ILLUM Board, LED PROT Board ............................. 9
3. ELECTRICAL ADJUSTMENT
4. DIAGRAMS
4-1. Printed Wiring Boards ....................................................... 12
4-2. Schematic Diagram -AMP Section (1/2)- ........................ 13
4-3. Schematic Diagram -AMP Section (2/2)- ........................ 14
5. EXPLODED VIEWS
5-1. Heat Sink (Main) Section .................................................. 15
5-2. AMP Board Section .......................................................... 16
6. ELECTRICAL PARTS LIST
.................................... 10
........................................ 17