Service manual

MODEL: WL-82913
Page 5
INTRODUCTION
This service manual provides service instructions for PTV Models WL-82913 which uses the V23L chassis. Service
personnel should read this manual thoroughly before servicing this chassis.
This service manual includes:
1. Assembly and disassembly instructions for the front and rear cabinet components.
2. Servicing of the Diffuser Screen and Fresnel Lens.
3. Servicing printed circuit boards (PCBs).
4. Electrical adjustments.
5. Optical Adjustments
6. Chip parts replacement procedures.
7. Circuit path diagrams.
The parts list section of this service manual includes:
1. Cabinet and screen parts.
2. Electrical parts.
Schematic and block diagrams of the above listed model are included in this service manual for better understanding of
the circuitry. PCB drawings are also included for easy location of parts and test points.
PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in television receivers have special safety related characteristics. These charac-
teristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by
using replacement components rated for higher voltage, wattage, etc.
Replacement parts which have special safety characteristics are identified in this service manual.
Electrical components having such features are identified by shading on the schematic diagram and by bold type in
the parts list of this service manual. Therefore, the replacement for any safety part should be identical in value
and characteristics.