Sanyo 2009 DP46849 User Manual

09/24/10
2009-2A
SANYO
TROUBLESHOOTING GUIDE
(ONLY FOR 2009 MODELS)
This guide is divided into 4 sections/pages depending on type of defect:
page 1) No Green LED Power Light (LED never turns “ON”)
page 2) Green LED Light is “ON”, but Backlights are not “ON”, or only turn “ON &
then OFF”.
page 3) Green LED Light is “ON”, and Backlights are “ON”, but there is no video/OSD.
page 4) Green LED Light turns “ON”, but turns “OFF” within 10 seconds.
Please select the section/page that matches your defect and follow the flow chart.
Only these models can use this guide:
DP26649 (except DP26649-03)
DP32649 (except DP32649-05)
DP42849
DP46819
DP46849
PLEASE KEEP THIS GUIDE.
IT WILL NOT BE PROVIDED FOR EVERY REPAIR.
techsupport@sanyotv.com

Sanyo 2009 DP46849 Specifications

General

Screen Size	46 inches
Display Type	LCD
Resolution	1920 x 1080
Aspect Ratio	16:9
HDMI Ports	3
Component Video Inputs	2
Composite Video Inputs	1
Brightness	500 cd/m²
Response Time	6.5 ms
Display Technology	LCD
Viewing Angle	178°
Input Ports	HDMI, Component, Composite
Sound Output	20W

Summary

Sanyo TV Troubleshooting Guide

Troubleshooting: No Green Power LED

Flow chart for diagnosing issues when the green power LED remains off.

Troubleshooting: Backlights Not On

Flow chart for diagnosing when green LED is on, but backlights are off or cycling.

Troubleshooting: No Video or OSD Display

Flow chart for diagnosing lack of video or OSD with LED and backlights active.

Troubleshooting: Power LED Turns Off Quickly

Flow chart for diagnosing when the power LED turns off within 10 seconds.

Service Manual Overview and Safety

Essential Safety Precautions

Critical safety instructions for handling and servicing the television.

On-Screen Service Menu Usage

Guide to accessing and utilizing the on-screen service menu for adjustments.

Power Failure Circuit Explanation

Details on the SUB-CPU's power failure detection and response mechanism.

Mechanical Disassembly Procedures

Step-by-step instructions for disassembling the television's physical components.

Component Identification and Block Diagrams

Main Board Component and Testpoint Locations

Diagrams illustrating component placement and testpoints on the main circuit board.

Control Board and RC LED Board Layouts

Visual guides to control board and RC LED board component arrangements.

System Block Diagrams (Power & Signal)

Diagrams detailing power distribution and signal flow within the TV system.

Technical Specifications and Schematics

Control Port Functions (SUB CPU)

Detailed specifications for SUB CPU control port assignments and functions.

Schematic Notes and Component Coding

Guides to interpreting schematic symbols, notations, and component value codes.

Full Schematic Diagrams

Comprehensive circuit schematics for the Sanyo DP26649 television.