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General| Display Technology | CRT |
|---|---|
| Screen Size | 21 inches |
| Aspect Ratio | 4:3 |
| TV System | PAL/SECAM |
| Audio System | Mono |
| Remote Control | Yes |
| SCART input(s) | 1 |
| Weight | 18 kg |
| Connectivity | SCART |
| Tuner | Analog |
Details on reception capabilities and miscellaneous technical data.
Information on rear and side connections, including SCART connector pinouts.
Guidelines for safe repair procedures, component handling, and post-repair checks.
Precautions against high voltage, electrostatic discharge (ESD), and picture tube hazards.
Information and rules for handling lead-free soldering technology during repair.
Advice on avoiding electrical shock and respecting voltage potentials during service.
Step-by-step guide for safely removing the rear cover of the television set.
Procedure for positioning and disconnecting the main panel for service access.
Instructions for correctly reassembling the rear cover after service.
Overview of features available in service mode for repair and adjustments.
Flowchart for diagnosing power supply issues based on voltage checks.
Table detailing component variations and reasons for modification between board versions.
High-level block diagram showing audio and video signal paths and component interconnections.
Simplified block diagram illustrating the power supply unit and its main functional blocks.
Diagram illustrating the I2C communication bus connections between ICs.
Overall system block diagram showing major modules and their interaction.
Circuit diagram and PWB layout for the microcontroller unit on the main board.
Circuit diagram and PWB layout for the video processing section on the main board.
Circuit diagram and PWB layout for the audio processing and amplification circuits.
Circuit diagram and PWB layout for the power supply unit.
Circuit diagram and PWB layout for the vertical and horizontal deflection circuits.
Circuit diagram for the CRT panel, showing connections to the electron gun and deflection yoke.
Circuit diagrams for SCART input/output interfaces and associated switching circuits.
Physical component layout on the top side of the main board.
Physical component layout on the bottom side of the main board.
Circuit diagram and PWB layout for the MCU on the 05TA085-6 main board version.
Circuit diagram and PWB layout for the video section on the 05TA085-6 main board.
Circuit diagram and PWB layout for the sound section on the 05TA085-6 main board.
Circuit diagram and PWB layout for the power supply on the 05TA085-6 main board.
Circuit diagram and PWB layout for the deflection circuits on the 05TA085-6 main board.
Circuit diagram for the CRT panel associated with the 05TA085-6 main board.
Circuit diagrams for SCART interfaces on the 05TA085-6 main board.
Circuit diagram for the side input/output panel specific to 21PT5421 models.
Component layout on the top side of the side I/O panel for 21PT5421.
Procedures for physical adjustments like system voltage and G2 settings.
Accessing and using the service mode for software-based alignment and settings.
Detailed steps for adjusting the G2 potentiometer for picture display.
Procedure for adjusting the Automatic Gain Control parameter via the service menu.
Description of key hardware components like the ST92195C/D microcontroller.
Details on the On Screen Display module's capabilities and features.
Information on the RAM used for storing Teletext pages and display parameters.
Description of the data slicers used for extracting teletext, VPS, and WSS information.
Explanation of the Automatic Frequency Control and its reference values.
Details on brightness, colour, contrast, and sharpness adjustments.
Table detailing settings for different smart picture modes (Rich, Natural, Soft, Multimedia).
Information on Peri-TV outputs for EXT and AV modes, including Pin 8 and Pin 16 behavior.
List of abbreviations used in the manual with their corresponding meanings.
Block diagrams and pin layouts for integrated circuits used in the TV.
List of spare parts for the 14PT1501/12 model with 12NC codes and descriptions.
List of spare parts for the 14PT1521/05 model with 12NC codes and descriptions.
List of spare parts for the 21PT1820/12 model with 12NC codes and descriptions.
