Sony SAT-B55 RM-Y139 - Manual (Page 4)

— 4 —
SAT-A55/B55
1. General --------------------------------------------------------------------------- 5
2. Disassembly
2-1. Upper Case Removal ---------------------------------------------------- 12
2-2. H Board Removal --------------------------------------------------------- 12
2-3. A, SC Board Removal --------------------------------------------------- 12
3. Service Test ---------------------------------------------------------------------- 12
4. Diagrams
4-1. Block Diagram -------------------------------------------------------------- 15
4-2. Circuit Boards Location --------------------------------------------------- 18
4-3. Schematic Diagrams and Printed Wiring Boards ----------------- 18
Schematic Diagrams of SC Board ------------------------------ 19
Schematic Diagrams of HB Board ------------------------------ 20
Schematic Diagram of A Board (1/4) -------------------------- 21
Schematic Diagram of A Board (2/4) -------------------------- 24
Schematic Diagram of A Board (3/4) -------------------------- 27
Schematic Diagram of A Board (4/4) -------------------------- 30
A Board PCB and Components Location --------------------- 33
4-4. Semiconductors ------------------------------------------------------------ 37
5. Exploded Views
5-1. SAT-A55/B55 Chassis ---------------------------------------------------- 38
5-2. SAN-18D3 -------------------------------------------------------------------- 39
6. Electrical Parts List --------------------------------------------------------------- 40
Section Title Page
TABLE OF CONENTS
SAFETY-RELATED COMPONENT WARNING !!
Components identified by shading and the critical mark
on the schematic diagrams, exploded views, and in the
parts list are critical for safe operation. Replace these
with Sony parts whose part numbers appear as shown
in this manual or in supplements published by Sony.
Circuit adjustments that are critical for safe operation
are identified in this manual. Follow these procedures
whenever critical components are replaced or improper
operation is suspected.
!