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General| Display Technology | CRT |
|---|---|
| Screen Size | 20 inches |
| Aspect Ratio | 4:3 |
| Audio Output | Mono |
| Resolution | 480i |
| Inputs/Outputs | Composite video input, RF input |
| Inputs | Composite, RF |
| Speakers | 1 |
Checks for electrical shock hazard using dielectric strength and leakage current tests.
Diagram illustrating the main components and their interconnections in the TV system.
Identifies and describes the buttons, terminals, and lamps on the front and rear of the TV set.
Details the functions and key assignments of the remote control unit for TV operation.
Step-by-step guide for disassembling the TV, managing wires, and checking internal components.
Detailed steps for replacing memory integrated circuits, including system constant setting.
Defines initial system constant values for various TV models.
Lists user-configurable settings and their default values.
Provides initial setting values for Video/Chroma, Deflection, and VSM presets via the service menu.
Steps for replacing the IF V/C DECODER IC, including data transfer and panel location.
Prerequisites, required instruments, and general guidelines before performing service adjustments.
Explains the service menu structure, adjustment items, and key operations.
Procedures for adjusting IF, VCO, and Delay Point settings in the service menu.
Procedures for adjusting V/C, DEF, and VSM PRESET settings.
Procedure for setting up the TV, including language and auto search.
Flowcharts illustrating the structure and sub-menus for various service adjustments.
Diagrams showing test points and component locations on the CRT socket and main PWB.
Procedures for adjusting B1 Power Supply voltage and picture focus.
Procedure for adjusting the IF circuit, focusing on VCO settings.
Procedure for adjusting the Delay Point and AGC Take-over settings in the IF circuit.
Adjustments for white balance (low light) and drive levels (R, B) in the video/chroma circuit.
Procedures for adjusting brightness and contrast in the video/chroma circuit.
Adjusting colour settings for PAL, SECAM, and NTSC signals.
Detailed colour adjustments using measuring instruments for PAL, SECAM, and NTSC signals.
Procedures for adjusting NTSC tint, both with and without measuring instruments.
Procedure for adjusting the black offset for SECAM signals.
Adjusting vertical height, position, and horizontal position in the deflection circuit.
Adjusting vertical linearity and curvature in the deflection circuit.
Setting VSM presets for different modes like Bright, Standard, and Soft.
Procedure for adjusting the purity of the CRT display.
Procedures for static and dynamic convergence adjustment using magnets and yoke movement.
Guide covering cautions, soldering iron use, and step-by-step replacement of chip components.
