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VESTEL 11AK37 User Manual

VESTEL 11AK37
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SERVICE MANUAL
VESTEL CHASSIS 11AK37
MODEL
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VESTEL 11AK37 Specifications

General IconGeneral
BrandVESTEL
Model11AK37
CategoryChassis
LanguageEnglish

Summary

Safety Precautions and Servicing

TV Set Switched Off Safety

Safety procedure for servicing the TV when it is switched off.

Servicing Measurements

Conditions and requirements for taking measurements during servicing.

1. Introduction to AK37 Chassis

2. Small Signal Part with STV2248

2.1 Vision IF Amplifier

Describes the Vision IF amplifier and its PLL demodulator.

2.2 QSS Sound Circuit

Details the QSS sound circuit and AM sound demodulator.

2.3 FM Demodulator and Audio Amplifier

Explains the FM demodulator and audio control for mono sound.

2.4 Video Switch

Describes the video processor's input switching capabilities.

2.5 Synchronization Circuit

Covers sync processing and deflection circuits.

2. Small Signal Part with STV2248 (Continued)

2.6 Chroma and Luminance Processing

Details chroma and luminance processing for TV signals.

2.7 RGB Output Circuit

Explains the RGB output stages and video processing functions.

2.8 µ-Controller

Describes the ST92195 microcontroller and its system features.

3. Tuner

Tuner Channel Coverage

Provides channel coverage data for UV1316, UV1336, and UV1315 tuners.

4. Multistandard Sound Processor

5. Sound Output Stage TDA7269A

6. Vertical Output Stage with STV9306

7. Video Output Amplifier STV5112

8. Power Supply (SMPS)

10. Serial Access CMOS 8K EEPROM 24C08

IC Descriptions and Block Diagrams

ST92195 Microcontroller

Description of the ST92195 microcontroller.

STV224X Video Processor

Details the STV224X video processor IC.

Tuner ICs (UV1315, UV1316, UV1336)

Descriptions of the UV1315, UV1316, and UV1336 tuner ICs.

Audio and Deflection ICs

Descriptions of audio, deflection, and other key ICs.

ST92195 Microcontroller Details

Microcontroller Pin Description

Detailed pin description for the ST92195 microcontroller.

STV224X Video Processor Details

Tuner ICs: UV1315, UV1316, UV1336

General Description of UV1315

General description of the UV1315 tuner.

Features of UV1315

Key features of the UV1315 tuner.

UV1315 PINNING

Pin configuration for the UV1315 tuner.

Tuner Band Switching Table

UV1316 Tuner Description

Features of UV1316

Key features of the UV1316 tuner.

UV1316 PINNING

Pin configuration for the UV1316 tuner.

UV1336 Tuner Description

Features of UV1336

Key features of the UV1336 tuner.

UV1336 PINNING

Pin configuration for the UV1336 tuner.

TDA7269A Audio Amplifier

General Description of TDA7269A

Describes the TDA7269A audio amplifier.

TDA7269A PINNING

Pin assignments for the TDA7269A amplifier.

STV9306 Vertical Deflection IC

General Description of STV9306

Describes the STV9306 vertical deflection IC.

STV9306 FEATURES

Key features of the STV9306 IC.

STV9306 PINNING

Pin assignments for the STV9306 IC.

STV5112 Video Amplifier

General Description of STV5112

Describes the STV5112 video amplifier.

STV5112 PINNING

Pin assignments for the STV5112 amplifier.

MC44608 Controller IC

MC44608 General Description

Describes the MC44608 voltage-mode controller.

MC44608 Features and Protections

Details features, protections, and controller functions.

MC44608 PINNING

Pin assignments for the MC44608 controller.

MSP 34XXG Sound Processor

MSP 34XXG General Description

Describes the MSP 34xxG multi-standard sound processor.

MSP 34XXG Features

Key features of the MSP 34XXG sound processor.

MSP 34XXG DSP and Analog Sections

Details DSP and analog sections of the sound processor.

24C08 EEPROM

24C08 General Description

Describes the 24C08 EEPROM.

24C08 Features

Key features of the 24C08 EEPROM.

TDA1308 Headphone Driver

TDA1308 Features

Features of the TDA1308 headphone driver.

TDA1308 PINNING

Pin assignments for the TDA1308 driver.

TDA7261 Audio Amplifier

General Description of TDA7261

Describes the TDA7261 audio amplifier.

TDA7261 PINNING

Pin assignments for the TDA7261 amplifier.

Saw Filter List

Saw Filter PINNING

K9656M, L9653M PINNING

Circuit Description - Power Supply

Start Up

Details the power supply start-up sequence.

Voltage Regulation

Explains voltage regulation in the SMPS.

Voltage Protection

Describes voltage protection features.

Current Protection

Details over-current protection mechanisms.

Safety Precautions

Critical safety warnings for power supply servicing.

Circuit Description - Microprocessor and Control

Standby Operation

Describes standby operation and mode transitions.

Microprocessor IC501

Details the functions of the main microprocessor IC501.

Controls

Explains input processing from remote and front panel controls.

Circuit Description - Adjustments and Modes

Tuning

Describes tuning modes and IC501 control.

Service Mode

How to enter and use the service mode.

Circuit Description - Signal Paths

Video Path

Video signal path through IC403 to CRT.

Sound Path

Mono and stereo sound signal paths.

AV Input Signal Path

Signal paths for AV inputs from SCART.

Circuit Description - Deflection and Limiting

Line Circuit

Line drive generation and line output stage.

B.C.L Circuit (Beam Current Limiter)

Beam current limiter for CRT protection.

AK37 Chassis Manual Adjustment Procedure

Service Adjustments

Parameters adjustable in the service menu.

AK37 Chassis Manual Adjustment Procedure - Geometry

Geometry Adjustments

Adjusting geometry parameters for 50 Hz and 60 Hz.

AK37 Chassis Manual Adjustment Procedure - Specific Adjustments

OSD Horizontal Position Adjustment

Adjusting OSD horizontal position.

Teletext Brightness Adjustment

Adjusting Teletext brightness.

Option Settings

OP1-Peripheral Options

Configuration options for peripheral features.

OP2-Reception Standard Options

Options for reception standards and sound systems.

Option Settings - Video and Channel Tables

OP3-Video Options

Video configuration options.

OP4-TV Features

TV feature configuration options.

OP5-Channel Tables

Channel table selection options.

TX1 – Teletext Options

GEOM – Geometry Options

Tuner Settings

AK30 Service Menu Items

Service menu items for tuner configuration.

Explanations of Tuner Settings

Explanations for tuner setting parameters.

General Block Diagram of Chassis AK37

AK37 / Titanium – Languages Groups

GROUP 1 - WEST

Languages in Group 1 - West.

GROUP 2 – WEST / EAST

Languages in Group 2 - West / East.

GROUP 3-WEST/TURKEY

Languages in Group 3 - West / Turkey.

GROUP 4-EAST/CYRILLIC

Languages in Group 4 - East / Cyrillic.

GROUP 5 - ARABIC

Using Remote Control Buttons

RED Button Function

Function of the RED button in service mode.

GREEN Button Function

Function of the GREEN button in service mode.

YELLOW Button Function

Function of the YELLOW button in service mode.

BLUE Button Function

Function of the BLUE button in service mode.

TTX Update Button Function

Function of the TTX Update button in service mode.

AK37 Block Diagram

AK37 SMPS Block Diagram

AK37 Controller Block Diagram

AK37 Video Block Diagram

AK37 Stereo Block Diagram

AK37 SCART Block Diagram

AK37 Deflection Block Diagram

AK37 Base Board Block Diagram

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