Sanyo DS32424 User Manual

Contents
Safety Instructions . . . . . . . . . . . . . . . . . . 2
Service Adjustments. . . . . . . . . . . . . 3 - 10
Service Hints. . . . . . . . . . . . . . . . . . . . . . 11
Mechanical Disassemblies. . . . . . . . . . . 12
Chassis Electrical Parts List . . . . . . 13 - 25
Cabinet Parts List . . . . . . . . . . . . . . . . . . 26
Component and Test Point
Locations . . . . . . . . . . . . . . . . . . . 27 - 32
Schematic Insert . . . . . . . . . . . . . . . 33 - 40
Schematic Notes . . . . . . . . . . . . . . . . . 33
Pin Layouts . . . . . . . . . . . . . . . . . . . . . 33
Capacitor and Resistor Codes . . . . . . 33
Block Diagram . . . . . . . . . . . . . . . 34 - 35
Voltage Charts . . . . . . . . . . . . . . . 34 - 36
Waveforms. . . . . . . . . . . . . . . . . . . . . . 36
Main PC Board . . . . . . . . . . . . . . . 37 - 40
Audio/Video Board. . . . . . . . . . . . 39 - 40
CRT Socket Board . . . . . . . . . . . . . . . . 37
Pincushion Correction Board . . . . . . . 37
Specifications
Power Rating . . . . . . . . . . . . . . . . . . . . . 120V, 60Hz
100W (Avg), 2.5A (Max)
Antenna Input Impedance. . . . . . . . . . . . . . . . . 75Ω
UHF/VHF/CATV
Receiving Channel . . . . . . . . . . . . . . . . 2 - 13 (VHF),
14 - 69 (UHF),
01, 14-94, 95-125 (CATV)
Remote Ready . . . . . . . . . . 39 Key Remote Control
Sound Output . . . . . . . . . . . . . . . . . . . . . . 3.0 W/CH
Intermediate Frequency
Picture IF Carrier. . . . . . . . . . . . . . . . . . 45.75MHz
Sound IF Carrier . . . . . . . . . . . . . . . . . . 41.25MHz
Color Sub Carrier . . . . . . . . . . . . . . . . . 42.17MHz
Picture Tube. . . . . . . . . . . . . . . . . . . A80ERF082X13
Semiconductors
Integrated Circuits. . . . . . . . . . . . . . . . . . . . . . . 13
Transistors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Except within Tuner and RC Pre-Amp.
Cabinet Dimensions
Width. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 768 mm
Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . 732 mm
Depth. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 577 mm
REFERENCE No. SM780093
DS32424, G7ZEA, PRODUCT CODE 111372384
AS
FILE NO.
SERVICE MANUAL Remote Control Color
Television
DS32424 (U.S.A.)
(CANADA)
ORIGINAL VERSION
Chassis No. 32424-00
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.
V
IEW
FLAT
MENU
CH
VOL
VOL
P
O
W
E
R
CH
+
_
A
S

Sanyo DS32424 Specifications

General

Screen Size	32 inches
Display Type	LCD
Aspect Ratio	16:9
Refresh Rate	60 Hz
Resolution	1366 x 768
Inputs	HDMI, VGA, Composite, Component

Summary

Specifications

SAFETY INSTRUCTIONS

SAFETY PRECAUTIONS

General safety warnings and precautions for servicing the television.

ANTENNA COLD CHECK

Procedure to check antenna connection resistance for safety.

LEAKAGE CURRENT CHECK

Method to test for electrical leakage current to prevent shock.

X-RADIATION PRECAUTION

Warning regarding X-ray emission from the picture tube and high voltage.

HIGH VOLTAGE HOLD-DOWN TEST

Procedure to test the high voltage hold-down circuit for safety.

PRODUCT SAFETY NOTICE

Importance of using correct replacement parts for continued product safety.

SERVICE ADJUSTMENTS

GENERAL

Overview of the on-screen service menu system.

ON-SCREEN SERVICE MENU SYSTEM

Instructions for entering and using the service menu for adjustments.

IC802 (EEPROM) REPLACEMENT

Procedure for replacing the EEPROM and initial data setup.

INITIAL BUS DATA SETUP

Steps to set initial data for proper TV operation after EEPROM replacement.

ANTENNA CONNECTIONS

Details on connecting UHF/VHF and CATV antennas.

CIRCUIT PROTECTION

Information on the AC line fuse and proper replacement.

+B VOLTAGE CHECK

Procedure for checking the +B voltage supply.

HORIZONTAL WIDTH ADJUSTMENT

Steps to adjust picture width using the service menu.

HORIZONTAL CENTERING ADJUSTMENT

Procedure to adjust horizontal picture centering.

VERTICAL SIZE ADJUSTMENT

Steps to adjust the vertical picture size.

VERTICAL CENTERING ADJUSTMENT

Procedure to adjust vertical picture centering.

VCO ADJUSTMENT

Instructions for adjusting the VCO frequency.

RF AGC ADJUSTMENT

Procedure to adjust RF AGC for optimal reception.

VIDEO LEVEL

Steps to set video level using an oscilloscope.

GRAYSCALE ADJUSTMENT

Procedure for adjusting picture grayscale.

BRIGHTNESS LEVEL ADJUSTMENT

Steps to adjust brightness level.

HIGH VOLTAGE HOLD-DOWN TEST

Testing the high voltage hold-down circuit.

HIGH VOLTAGE CHECK

Procedure for checking high voltage output.

FOCUS ADJUSTMENT

How to adjust the focus control for clear picture.

MULTI-SOUND SECTION ADJUSTMENTS

Adjustment for multi-sound system after component replacement.

INPUT LEVEL ADJUSTMENT

Setting the audio input level.

SEPARATION ADJUSTMENT

Procedure for adjusting audio separation.

PINCUSHION CORRECTION ADJUSTMENT

Steps to correct pincushion distortion.

PURITY AND CONVERGENCE ADJUSTMENTS

Note that purity and convergence are factory set.

DRIVE AND BIAS ADJUSTMENTS

PROGRAM CODES

Importance and setting of program codes for model features.

SERVICE HINTS

POWER FAILURE DETECTOR

Functionality of the power failure detector and troubleshooting.

MECHANICAL DISASSEMBLIES

CABINET BACK REMOVAL

Instructions for removing the TV cabinet back cover.

CHASSIS REMOVAL

Steps to safely remove the TV chassis.

PICTURE TUBE REMOVAL

Procedure for removing the picture tube with caution.

CHASSIS ELECTRICAL PARTS LIST

CAPACITORS

List of capacitor parts, types, and values.

DIODES

List of diode parts, types, and values.

INTEGRATED CIRCUITS

List of IC parts, types, and values.

COILS

List of coil parts, types, and values.

RESISTORS

List of resistor parts, types, and values.

SWITCHES

List of switch parts and functions.

TRANSFORMERS

List of transformer parts and types.

CRYSTAL/FILTERS

List of crystal and filter components.

MISCELLANEOUS

List of miscellaneous parts like fuses and sockets.

CABINET PARTS LIST

ACCESSORY PARTS LIST

COMPONENT AND TESTPOINT LOCATIONS

MAIN BOARD COMPONENTS AND TEST POINTS GRID LOCATIONS

Grid location of components and test points on the main board.

PICTURE TUBE SOCKET BOARD

Component locations on the picture tube socket board.

AV BOARD COMPONENTS

Component locations on the AV board.

PCC BOARD COMPONENTS

Component locations on the PCC board.

SCHEMATIC DIAGRAMS

BLOCK DIAGRAM

Overall block diagram of the television circuit.

WAVEFORMS

Display of various signal waveforms.

VOLTAGE CHARTS

Table of voltage measurements at various test points.

CAPACITOR AND RESISTOR CODE CHART

Guide to capacitor and resistor coding.