Sony KDL-26U4000, Service Manual

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TABLE OF CONTENTS
Section Title Page Section Title Page
1. GENERAL
................................................................... 3
Caution ................................................................ 3
Specifications ..................................................... 4
Connectors .......................................................... 5
Self Diagnosis ..................................................... 7
2. DISASSEMBLY
2-1. Rear Cover Removal .......................................... 8
2-2. Stand Removal ................................................... 8
2-3. Loudspeaker Removal ........................................ 8
2-4. Side Jack Bracket Assy Removal ...................... 8
2-5. BC1 Board Removal .......................................... 9
2-6. GA2 Board Removal (26/32 inches) ................. 9
2-7. GA3 Board Removal (37 inches) ....................... 9
2-8. HM4/HM5 Board Removal ................................ 9
3. ADJUSTMENTS
3-1. How to enter the Service Mode ........................ 10
3-2. TT Modes .......................................................... 12
3-3. TT OSD Labels ................................................. 13
4. DIAGRAMS
4-1. Block Diagram ................................................... 14
4-2. Circuit Board Location ....................................... 15
4-3. Schematic Diagrams and Printed Wiring
Boards ................................................................. 15
BC1 Board Schematic Diagram ......................... 16
HM4 Board Schematic Diagram(26/32 inches) 28
HM5 Board Schematic Diagram(37 inches) ...... 28
GA2 Board Schematic Diagram(26/32 inches) . 29
GA3 Board Schematic Diagram(37 inches) ...... 30
BC1 Printed Wiring Board ................................. 32
HM4 Printed Wiring Board(26/32 inches) ........ 32
HM5 Printed Wiring Board(37 inches) ............. 33
GA2 Printed Wiring Board(26/32 inches) ......... 34
GA3 Printed Wiring Board(37 inches) .............. 36
5. EXPLODED VIEWS
5-1. Chassis ................................................................ 38
5-2. Beznet Assy ........................................................ 39
5-3. Rear Cover & Power Supply Cords ................... 40
6. ELECTRICAL PARTS LIST .................................. 41
SAFETY-RELATED COMPONENT WARNING !!
COMPONENTS IDENTIFIED BY SHADING AND MARKED ON
THE EXPLODED VIEWS AND IN THE PARTS LIST ARE CRITICAL
FOR SAFE OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN
THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
WARNING !!
AN ISOLATION TRANSFORMER SHOULD BE USED DURING ANY
SERVICE WORK TO AVOID POSSIBLE SHOCK HAZARD DUE TO
LIVE CHASSIS, THE CHASSIS OF THIS RECEIVER IS DIRECTLY
CONNECTED TO THE POWER LINE.