EasyManua.ls Logo

VESTEL MB185 IDTV User Manual

VESTEL MB185 IDTV
58 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Page #1 background imageLoading...
Page #1 background image
MB185 IDTV
SERVICE MANUAL
Question and Answer IconNeed help?

Do you have a question about the VESTEL MB185 IDTV and is the answer not in the manual?

VESTEL MB185 IDTV Specifications

General IconGeneral
Display TechnologyLED
Screen Size18.5 inches
HDMI Ports1
USB Ports1
Aspect Ratio16:9
Resolution1366 x 768
TunerAnalog and Digital
Built-in Digital TunerYes
Power Consumption25W
VGA PortYes
Headphone JackYes

Summary

Introduction

SSB Layout Diagram

T/T2/C/A Tuner (U107)

S/S2 Tuner (U3) Optional

Audio Amplifier Stages

Main Amplifier (U118)

Description of AD82587D digital audio amplifier for 8-ohm, 20W or 4-ohm, 40W speakers.

Sub-Woofer Amplifier (U1)

Details on AD82088 digital audio amplifier for stereo and mono speaker configurations.

Power Stage

Power Stage Components

List of components used in the power stage, including DC-DC converters and MOSFETs.

FDS4685 8.2A/40V MOSFET (Q103)

Detailed electrical characteristics and features of the FDS4685 P-Channel MOSFET.

DMG8402LDM MOSFET (Q104)

Features and specifications for the DMG8402LDM MOSFET, including low RDS(ON).

TPS54528 Buck Converter (U101)

Description and features of the TPS54528 synchronous buck converter.

TPS563200 Buck Converter (U102, U105, U106)

Details on TPS563200 synchronous step-down converters for power supply applications.

MP8774GO-Z 12A Converter (U122)

Description and features of the MP8774 integrated synchronous step-down converter.

Microcontroller (MTK G31)

8 GB eMMC Storage (U128)

USB Interface

CI Interface

Software Update

Troubleshooting

No Backlight Problem

Troubleshooting steps for TV with no picture or backlight, checking specific pins and cables.

CI Module Problem

Diagnosing issues with the CI module not working, checking supply and pin positions.

IR Problem

Troubleshooting steps for LED or IR not working, checking LED card supply.

Keypad Touchpad Problems

Troubleshooting steps for keypad or touchpad not working, checking keypad supply.

USB Problems

Troubleshooting USB issues, checking supply voltage and USB Enable signal.

No Sound Problem

Diagnosing no audio issues, checking supply voltages and headphone detect circuit.

Standby On/Off Problem

Troubleshooting device boot failure or TV hanging in standby mode.

No Signal in DVB-S/S2 Mode

Troubleshooting no or low signal in DVB-S/S2, checking cables, LNB voltage, and tuner supply.

No Signal in DVB-T Mode

Troubleshooting no or low signal in DVB-T, checking cables, LNB voltage, and tuner supply.

Service Menu Settings

General Block Diagram

Related product manuals