Hitachi 42EDT41A, Service Manual

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NOVEMBER 2004 HHEA-MANUFACTURING DIVISION
PA
No. 0198
42EDT41A
CMP420V1A / CMP420V2A
R/C: CLU-W900 / SMK
N N T T S S C C
P PW W1 1A A
C Ch ha as ss siis s
SERVICE MANUAL
PLASMA DISPLAY PANEL
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
TO GO TO A CHAPTER, CLICK ON ITS HEADING BELOW
Be sure to read this manual before servicing. To assure safety from fire, electric shock, injury, harmful radiation
and materials, various measures have been provided for in this HITACHI Plasma display service manual.
Be sure to read all cautionary items described in the manual to maintain safety before servicing.
Contents
1. Since the Panel Module and front Filter are made of glass, handle a broken Module and/or Filter with
sufficient care, in order not to be injured.
2. Repair work should not be started until after the Panel Module and the AC/DC Power supply have cooled
sufficiently.
3. Special care should be exercised in the proximity of the display area in order not to damage its surface.
4. The Panel Module should not be touched with bare hands, as this will protect its surface from stains.
5. It is recommended to use clean soft gloves during the repair work in order to protect not only the display
area of the Panel Module but also the technician.
6. The Chip Tube of the Panel Module (located in the upper left corner of the back of the glass panel)
is very fragile; as well, the flat cables connecting the Panel to the drive circuit PWBs are very weak. Take
care not to damage these, otherwise, the panel will never light again.
Service Warning
Caution
1. Safety Precaution------------------------------------ 2
2. Precaution -------------------------------------------- 21
3. Features ---------------------------------------------- 21
4. Specifications---------------------------------------- 22
5. Service Points---------------------------------------27
6. Service Mode Access --------------------------------28
7. Troubleshooting Flow Chart----------------------55
8. Block Diagram---------------------------------------58
9. Connector Connection Diagram-----------------61
10. Circuit Board Layers-----------------------------63
11. Basic Circuit Diagram----------------------------64
12. Printed Wiring Board Diagram-----------------68
13. Disassembly Diagram---------------------------- 71
14. Replacement Parts List ---------------------------- 72
15. DC Voltages ----------
-
------------------------------ 74
CH 3