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General| Display Type | CRT |
|---|---|
| Aspect Ratio | 4:3 |
| Audio | Mono |
| Screen Size | 14 inches |
| Inputs | Composite |
Highlights the various functionalities and technologies integrated into the models.
Essential safety precautions for handling the television during servicing.
Detailed technical data for the 14BM2, 20BM2, and 21BM2 series TVs.
Critical guidelines for qualified service personnel during maintenance.
Precautions to take before performing any adjustments on the TV.
Instructions for entering and using the TV's service mode.
Procedure for tuning the Intermediate Frequency (IF) amplifier section.
Steps to ensure correct color purity on the CRT screen.
Method for aligning electron beams for optimal image sharpness.
Adjustments for CRT black level, background, and sub-contrast settings.
Adjustments for image geometry and focus.
Procedures for tuning color signals in NTSC and PAL broadcast systems.
Verification of video and audio playback and input functions in normal mode.
Guide for enabling and managing the hotel mode feature.
Diagnostic steps for television sets with no picture or sound.
Steps to diagnose and resolve issues related to missing picture or sound.
Diagnostic steps for television sets with no audio output.
Steps to diagnose and resolve problems with color reception.
Visual guide to the pin configurations of semiconductor components.
Visual representation of component placement on the main and CRT units.
Functional block diagrams for the main unit and CRT unit.
Display of expected signal waveforms for various test points.
Explanation of schematic symbols and circuit operation notes.
Diagrams showing component layout on PCB wiring sides.
Detailed list of replaceable parts with part numbers and codes.
List of external cabinet components and accessories for replacement.
