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Sharp 19C140 - 19" CRT TV User Manual

Sharp 19C140 - 19" CRT TV
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COLOR TELEVISION
Chassis No. CD-A
In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its
original condition and only parts identical to those specified should be used.
» ELECTRICAL SPECIFICATIONS......................................................................................................... 1
» IMPORTANT SERVICE SAFETY PRECAUTION ................................................................................. 2
»LOCATION OF USER'S CONTROL.....................................................................................................4
»INSTALLATION AND SERVICE INSTRUCTIONS................................................................................5
»CHASSIS LAYOUT............................................................................................................................10
»BLOCK DIAGRAM.............................................................................................................................11
»SCHEMATIC DIAGRAMS..................................................................................................................12
»PRINTED WIRING BOARD ASSEMBLIES........................................................................................15
»REPLACEMENT PARTS LIST...........................................................................................................18
»PACKING OF THE SET.....................................................................................................................23
Page
SHARP CORPORATION
This document has been published to be used for after
sales service only.
The contents are subject to change without notice.
CONTENTS
SERVICE MANUAL
POWER INPUT................................120 V AC 60 Hz
POWER RATING .............................................69 W
PICTURE SIZE.......................1,194cm
2 (185sq inch)
CONVERGENCE........................................Magnetic
SWEEP DEFLECTION................................Magnetic
FOCUS...........................Hi-Bi-Potential Electrostatic
INTERMEDIATE FREQUENCIES
Picture IF Carrier Frequency ................. 45.75 MHz
Sound IF Carrier Frequency .................. 41.25 MHz
Color Sub-Carrier Frequency ................ 42.17 MHz
(Nominal)
ELECTRICAL SPECIFICATIONS
AUDIO POWER
OUTPUT RATING...........1.0 W (at 10% distortion)
SPEAKER
SIZE .................................................. 8 cm (Round)
VOICE COIL IMPEDANCE...........8 ohm at 400 Hz
ANTENNA INPUT IMPEDANCE
VHF/UHF................................ 75 ohm Unbalanced
TUNING RANGES
VHF-Channels.......................................... 2 thru 13
UHF-Channels........................................ 14 thru 69
CATV Channels ...................................... 1 thru 125
(EIA, Channel Plan U.S.A.)
Specifications are subject to change without
prior notice.
MODELS
19C140
19C140
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Sharp 19C140 - 19" CRT TV Specifications

General IconGeneral
Display TechnologyCRT
Screen Size19 inches
Aspect Ratio4:3
Power Consumption65W
Weight40.8 lbs
InputsComposite

Summary

Electrical Specifications

Service Safety Precautions

General and High Voltage Safety

General warnings, high voltage, picture tube, and X-radiation safety guidelines.

Pre-Return Checks and Component Safety

Final safety checks and guidelines for safety-related components.

Location of User Controls

Front Panel Controls

Description of controls located on the front panel of the TV.

Remote Control Functions

Explanation of the functions of the basic remote control.

Installation and Service Instructions

Circuit Protection

Details on the receiver's circuit protection fuse.

X-Radiation Protector Circuit Test

Procedure to test the X-radiation protection circuit.

High Voltage Check

Procedure for checking the high voltage output.

Service Adjustment Procedures

Entering and Exiting Service Mode

Instructions on how to access and exit the service mode.

Service Adjustment Selection

Steps for selecting and adjusting service parameters.

Service Adjustment Items

Picture and Color Adjustments

Adjustments for picture quality, tint, color, brightness, and sharpness.

Phase and Sweep Adjustments

Adjustments for vertical/horizontal phase, RF AGC, and VCO.

Colorimetry and Control Adjustments

Adjustments for colorimetry, trap, balance, and position controls.

System and Option Adjustments

Adjustments for system settings, energy saving, OSD, tuner, and options.

Detailed Service Adjustments

VCO and RF AGC Adjustment

Procedures for adjusting VCO and RF AGC.

Screen and White Balance Adjustment

Procedures for screen and white balance adjustments.

Sub-Picture, Tint, and Color Adjustment

Procedures for sub-picture, tint, and color adjustments.

Description of Schematic Diagram

Notes for Schematic Diagram

Explanations of units, resistor/capacitor notations, and ground symbols.

Voltage Measurement Conditions

Conditions and procedures for measuring DC voltages.

Waveform Measurement Conditions

Conditions and procedures for measuring waveforms.

Chassis Layout

PWB-B Layout

Layout diagram of Printed Wiring Board B.

PWB-A Layout

Layout diagram of Printed Wiring Board A.

Block Diagram

PWB-A Block Diagram

Block diagram of Printed Wiring Board A components and connections.

PWB-B Block Diagram

Block diagram of Printed Wiring Board B components and connections.

Cold and Hot Side Components

Identification of cold and hot side components in the block diagram.

Main Unit Schematic Diagram

Main Unit Schematic

Schematic diagram for the main unit of the television.

CRT Unit Schematic Diagrams

CRT Unit PWB-A Schematic

Schematic diagram for the CRT Unit's PWB-A.

CRT Unit PWB-B Schematic

Schematic diagram for the CRT Unit's PWB-B.

Printed Wiring Board Layouts

PWB-A: Main Unit Wiring Side

Wiring side layout of the PWB-A for the main unit.

Printed Wiring Board Layouts (Continued)

PWB-A: Main Unit Chip Parts Side

Chip parts side layout of the PWB-A for the main unit.

Printed Wiring Board Layouts (Continued)

PWB-B: CRT Unit Layouts

Wiring and chip sides layout of the PWB-B for the CRT unit.

Parts List

Parts Replacement Information

Information on replacing parts and how to order them.

Picture Tube Parts

List of replacement parts for the picture tube.

Integrated Circuits and Transistors

Lists of replacement integrated circuits and transistors.

Diodes and Packaged Circuits

Lists of replacement diodes and packaged circuits.

Parts List - Capacitors and Resistors

Capacitor List

List of replacement capacitors with their specifications.

Resistor List (Metal Oxide/Metal Film)

List of replacement resistors, specifying type and value.

Parts List - Resistors and Filters

Resistor List (Continued)

Continuation of replacement resistor listings.

Filters and Coils List

List of replacement filters and coils.

Transformer and Switch Parts

Lists of replacement transformers and switches.

Parts List - Jacks, Plugs, and Miscellaneous

Jack and Plug List

Lists of replacement jacks and plugs.

Miscellaneous Parts

List of various miscellaneous replacement parts.

CRT Unit Parts List

List of replacement parts specific to the CRT unit.

Miscellaneous and Packing Parts

Miscellaneous Parts (Continued)

Additional miscellaneous replacement parts.

Packing Parts

List of packing materials for the product.

Cabinet Parts

List of replacement cabinet components.

Supplied Accessories

List of accessories supplied with the product.

Packing of the Set

Packing Materials

Components and materials used for packing the set.

Packing Procedure

Steps for taping and stapling the packing case.

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