DHC-FL3, GDM-C520, GDM-C520K, HCD-FL3 - Sony Monitor Service Manual (repair manual). Page 2

SECTION TITLE 

PAGE

Power Management .................................................................................................................................. 4
Diagnosis Function.................................................................................................................................... 4
Timing Specification .................................................................................................................................. 5
Warnings and Cautions............................................................................................................................. 6
Safety Check-Out...................................................................................................................................... 7

SECTION 1: DISASSEMBLY.................................................................................................................................. 8

1-1.  Cabinet Removal............................................................................................................................. 8
1-2.  Service Position............................................................................................................................... 9
1-3.  A1 Board (C Block) Removal ........................................................................................................ 10
1-4.  A1 Board Removal ........................................................................................................................ 10
1-5.  Bezel Assembly and H2 Board Removal........................................................................................11
1-6.  D Board Removal .......................................................................................................................... 12
1-7.  Picture Tube Removal ................................................................................................................... 13
 

Anode Cap Removal ..................................................................................................................... 13

1-8.  Harness Location .......................................................................................................................... 14

SECTION 2: SAFETY RELATED ADJUSTMENTS.............................................................................................. 15

2-1.  HV Regulator Circuit Check .......................................................................................................... 15
2-2.  HV Protector Circuit Check............................................................................................................ 15
2-3.  Beam Current Protector Circuit Check .......................................................................................... 15

SECTION 3: ADJUSTMENTS .............................................................................................................................. 16

3-1.  Landing Rough Adjustment ........................................................................................................... 16
3-2.  Landing Fine Adjustment............................................................................................................... 16
3-3.  Convergence Rough Adjustment................................................................................................... 17
3-4.  White Balance Adjustment Specification ....................................................................................... 17
3-5.  Vertical and Horizontal Position and Size Specification ................................................................ 18
3-6.  Focus Adjustment.......................................................................................................................... 18

SECTION 4: DIAGRAMS...................................................................................................................................... 19

4-1.  Circuit Boards Location ................................................................................................................. 19
4-2.  Printed Wiring Board and Schematic Diagram Information........................................................... 19
4-3.  Block Diagrams ............................................................................................................................. 20
 

A1 Block Diagram, H2 Block Diagram, and L2 Block Diagram ..................................................... 20

DA Block Diagram and N Block Diagram ...................................................................................... 21

D Block Diagram ........................................................................................................................... 22

4-4.  Schematics and Supporting Information ....................................................................................... 23
 

H2 Board Schematic Diagram....................................................................................................... 23

D Board Schematic Diagram......................................................................................................... 24

DA Board Schematic Diagram....................................................................................................... 26

N Board Schematic Diagram......................................................................................................... 27

L2 Board Schematic Diagram ....................................................................................................... 28

A1 Board Schematic Diagram ....................................................................................................... 29

4-5.  Semiconductors............................................................................................................................. 31

SECTION 5: EXPLODED VIEW ........................................................................................................................... 33

5-1.  Chassis.......................................................................................................................................... 33
5-2.  Picture Tube .................................................................................................................................. 34
5-3.  Packing Materials (For GDM-C520 Only)...................................................................................... 35
5-4.  Packing Materials (For GDM-C520K Only) ................................................................................... 36

SECTION 6:  ELECTRICAL PARTS LIST............................................................................................................ 37