Changhong Electric PF2939, Service Manual, Page: 2 / 47

SERVICE MANUAL
TABLE OF CONTENTS
SAFETY INSTRUCTIONS AND MAINTENANCE
.....................................1
X-Ray Radiation Precaution
...............................................................................................1
Safety Precaution
................................................................................................................1
Product Safety Notice
.........................................................................................................2
Maintenance..........................................................................................................
3
KEY ICS AND ASSEMBLIES
..................................................................................4
SYSTEM BLOCK DIAGRAMS
...............................................................................5
Structure Block Diagram
.....................................................................................................5
Block Diagram for Supply Voltage System
.....................................................................6
SERVICE DATA
................................................................................................................7
Technical Data of Key ICs
..................................................................................................7
Service Data of Key ICs
.....................................................................................................2
1
Waveforms of Key Points
...................................................................................................2
7
ADJUSTMENTS
..............................................................................................................3
4
Set-up Adjustments
.............................................................................................................3
4
Circuit Adjustments
.............................................................................................................. 3
6
Service Mode and Bus Data
..............................................................................................
38
APPENDIX
Circuit Diagrams