Sanyo DS24425 User Manual

AS
FILE NO.
SERVICE MANUAL
(SUPPLEMENT)
Remote Control Color
Television
DS24425 (U.S.A.)
(CANADA)
ORIGINAL VERSION
Chassis No. 24425-00
NOTE: Match the Chassis No. on
the unit’s back cover with
the Chassis No. in the
Service Manual.
If the Original Version
Service Manual Chassis
No. does not match the
unit’s, additional Service
Literature is required. You
must refer to “Notices” to
the Original Service Manual
prior to servicing the unit.
H2BCA, PRODUCT CODE 111370382
REFERENCE No. SS780053
THIS CHASSIS IS SIMILAR TO MODEL DS24424, CHASSIS NUMBER
24424-00. SERVICE INFORMATION GIVEN IN THIS MANUAL IS ONLY
THE DIFFERENCE INFORMATION FROM MODEL DS24424, CHASSIS
NUMBER 24424-00. FOR ADDITIONAL SERVICE INFORMATION, REFER
TO THE SERVICE MANUAL FOR CHASSIS NUMBER 24424-00 USED IN
MODEL DS24424 (SM780092).
AS

Sanyo DS24425 Specifications

General

Screen Size	24 inches
Display Type	LCD
Aspect Ratio	16:9
Refresh Rate	60 Hz
Inputs	HDMI, Composite, VGA, RF
Sound Output	10W (2 x 5W)

Summary

Specifications

SAFETY INSTRUCTIONS

SAFETY PRECAUTIONS

General warnings and precautions for safe handling and operation.

X-RADIATION PRECAUTION

Information on limiting X-ray emission and maintaining high voltage.

HIGH VOLTAGE HOLD-DOWN TEST

Procedure to test the circuit preventing excessive high voltage.

SERVICE ADJUSTMENTS

GENERAL SERVICE MENU OPERATION

How to access and use the on-screen service menu system.

EEPROM REPLACEMENT AND BUS DATA SETUP

Procedures for replacing the EEPROM and setting initial bus data.

INITIAL BUS DATA SETUP

Detailed list of initial data settings for proper TV operation.

DRIVE AND BIAS ADJUSTMENTS

Adjusting red/blue drive and bias levels for picture quality.

PROGRAM CODES

Information on essential program codes for model-specific features.

HORIZONTAL CENTERING ADJUSTMENT

Steps to center the picture horizontally using the service menu.

GRAYSCALE ADJUSTMENT

Adjusting red, green, and blue bias and drive levels for grayscale.

HIGH VOLTAGE CHECK

Procedure for checking the high voltage output.

BRIGHTNESS LEVEL ADJUSTMENT

Adjusting the brightness level using a color bar generator.

HIGH VOLTAGE HOLD-DOWN TEST

Testing the high voltage hold-down circuit functionality.

MULTI-SOUND SECTION ADJUSTMENTS

Adjustments for the multi-sound section after component replacement.

SERVICE HINTS

POWER FAILURE DETECTOR

Function and troubleshooting for the power failure detection system.

PURITY AND CONVERGENCE ADJUSTMENTS

PURITY ADJUSTMENTS

Steps to adjust the purity of colors on the screen.

CONVERGENCE ADJUSTMENT

Aligning color lines for optimal picture geometry.

MECHANICAL DISASSEMBLIES

CABINET BACK REMOVAL

Steps for removing the rear cabinet cover.

CHASSIS REMOVAL

Procedure for safely removing the main chassis.

PICTURE TUBE REMOVAL

Instructions for safely removing and replacing the picture tube.

CHASSIS ELECTRICAL PARTS LIST

PRODUCT SAFETY NOTICE

Guidance on using correct replacement parts for safety.

CABINET PARTS LIST

ACCESSORY PARTS LIST

COMPONENT AND TESTPOINT LOCATIONS

MAIN BOARD PARTS SIDE

Diagram showing component locations on the main board's parts side.

MAIN BOARD FOIL SIDE

Diagram showing component locations on the main board's foil side.

PICTURE TUBE SOCKET BOARD

Diagram showing components on the picture tube socket board.

WAVEFORMS

VOLTAGE CHARTS