Strong SRT8500 Manuel utilisateur

service manual

DTT1609

CONTENTS

3.2 COMPONENT LAYOUT OF MAIN BOARD

1.6 AUDIO

2.1 SCHEMATIC OF POWER SUPPLY

# ADDITIONAL TROUBLESOOTHING

3 SCHEMATIC.COMPONENT LAYOUT AND BOM OF MAIN BOARD

3.1 SCHEMATIC OF MAIN BOARD

3.3 BOM OF MAIN BOARD

1.1 SHORT TEST

1 MAIN BOARD TROUBLE SHOOTING GUIDE

1.2 POWER

1.3 MAIN CLOCK

1.4 CVBS

1.5 RGB

2.2 COMPONENT LAYOUT OF POWER SUPPLY

2 SCHEMATIC.COMPONENT LAYOUT AND BOM OF POWER SUPPLY

Main Board Trouble Shooting Guide

(DTT1609)

Here are the procedures you can refer to whenever terrestrial receivers do not

operate properly. You can check problems and repair the units on the basic level

according to the following procedures

Main Board

1

2

35

4

7

6

8

910

1. SHORT TEST

☞Before turning on AC power, check POSITIVE VOLTAGE and also check whether SHORT

between GROUND's and PIN SHORT for TUNER are detected or not.

2. Checking POWER.

☞ +12V(SCART),+5V(ANTENNA_POWER,IR,VIDEO BUFFER,HDMI,USB), +3.3V(TUNER, FLASH,

CPU),+2.5V(DEMOD),+1.5V(DDR3,CPU),+1.3V(CPU DEMOD)

1

1

+5V

+12V

+5V For HDMI

6

+3V3 For

Tuner

2

+3V3

For C

p

u

10

+3V3

+1V5

For C

p

u

+1V5 For

DDR3

3

+1V3 For

Cpu

2

10 +2V5 For

DEMOD

5

+1V3 For

DEMOD

+5V For

USB

8

+5V For Video

Buffer

+5V For Audio

3. Check MAIN CLOCK 24MHz and SYSTEM CLOCK (PLL) to operate normally after SYSTEM

operates.

☞For the first thing, check 24MHz from Y401 flows into [OSCI(PIN B18)] of MAIN

CPU

If the 24MHz is unstable, Check Y401 is damaged or not.

If you are firm belief of damage for the device, then replace the device.

☞ And then, check that 800MHz is being supplied to DDR3 with RESET

If the clock 800MHz on Pin-J7&K7 of U401 is not generated from inside of the

chip,Please check the soldering state of U401,U402 and U403

(MAIN CLOCK) 24MHz

(DDR3 CLOCK) 800MHz

DDR3 CLOCK 800Mhz

MAIN CLOCK

4. In case that MAIN CPU operates normally but there is no VIDEO display.

▶ In case of no OSD display.

☞ If OSD is not displayed, check first if VIDEO SIGNAL is detected from

[R419(CVBS),R416(R),R417(G),R418(B)] of MAIN CPU.

☞ And then, check any part with no DATA after checking VIDEO SIGNAL from VIDEO

SIGNAL PORT of MAIN CPU, or SCART

▶ In case of no MPEG display

☞ There can be a variety of reasons for the case

☞ Check first that CHANNEL of TP SIGNAL is locked properly.

☞ After this signal input to the resistor connected to MAIN CPU is done normally,

A/V DATA comes out from MAIN CPU and flows into MPEG CHIP(MAIN CPU). If there is no

problem to here, it is thought that MAIN CPU and channel are operating without any

fault.

☞ In case of no MPEG display to this point, inspect any disorder by checking

U701(TUNER IC) and I/F of MAIN CPU.

Table des matières

Autres manuels Strong Récepteur TV

Strong

Strong SRT 5302 Manuel utilisateur

Strong

Strong SRT 5405 Manuel utilisateur

Strong

Strong SRT 3000 Manuel utilisateur

Strong

Strong SRT 8205 Manuel utilisateur

Strong

Strong SRT 82 Manuel utilisateur

Strong

Strong SRT 6100 Manuel utilisateur

Strong

Strong SRT 5011 Manuel utilisateur

Strong

Strong SRT 5505 MHP Manuel utilisateur

Strong

Strong SRT 55 Manuel utilisateur

Strong

Strong SRT 5428S Manuel utilisateur

Strong

Strong SRT 3030 Manuel utilisateur

Strong

Strong SRT 8205 Manuel utilisateur

Strong

Strong SRT 5410 Manuel utilisateur

Strong

Strong SRT 5261 PDR Manuel utilisateur

Strong

Strong PRIMA III Manuel utilisateur

Strong

Strong SRT 5015 Manuel utilisateur

Strong

Strong SRT 5429 Manuel utilisateur

Strong

Strong SRT 8205 Manuel utilisateur

Strong

Strong SRT 7504 Manuel utilisateur

Strong

Strong SRT 8202 Manuel utilisateur

Strong

Strong SRT 5024 Manuel utilisateur

Strong

Strong SRT 5020X Manuel utilisateur

Strong

Strong SRT 4950E Manuel utilisateur

Strong

Strong SRT 8215 Manuel utilisateur

Manuels Récepteur TV populaires d'autres marques

NEC

NEC PX-TUAN-01 Manuel utilisateur

Edision

Edision Piccollino Manuel utilisateur

Matsui

Matsui DTR1 Manuel utilisateur

Dyon

Dyon Raptor Manuel utilisateur

TerraTec

TerraTec CINERGY DT USB XS DIVERSITY Manuel d'instructions

Haier

Haier 34F9K Manuel utilisateur

TechniSat

TechniSat DigiCom 1 Manuel utilisateur

Haier

Haier LT19A1 Manuel utilisateur

Triax

Triax CR 317 Manuel utilisateur

DirecTV

DirecTV D10-300 Manuel utilisateur

Motorola

Motorola VIP2502W Manuel utilisateur

ActionTec

ActionTec WirelessTV Manuel utilisateur

Motorola

Motorola VIP1200 Series Manuel utilisateur

Xoro

Xoro HRT 1300 Manuel utilisateur

Motorola

Motorola DH6200 Manuel utilisateur

Manhattan

Manhattan Plaza DS-100 Manuel utilisateur

Micro Prose

Micro Prose MPI-500 Manuel utilisateur

TechniSat

TechniSat DIGIT ISIO S Manuel d'instructions