18
TPT1.2A LA
5. Service Modes, Error Codes and Fault Finding
3.No picture/LED is green
Check
scaler board U102
pin1=14V,pin4=1.22V,
pin7=16V,pin8
=5V
No
Check power
Yes
Check if
working voltage
U152,pin2=3.3V
pin3=5V
No
Check circuit around
each regulator and
eliminate short and
open situation
Yes
Check if clock
source X350
Replace X350
No
Yes
Check if
RGB,clk,H/V and
DE signal output 128
bits TTL
No
Try to replace
flash Rom
EEPROM
Check
resistors-network
No
Replace bad resistors-
network
Yes
Yes
Replace LVDS cable
Содержание 37PFL7422/79
Страница 27: ...27 TPT1 2A LA 6 Block Diagram 24V TPA3100 U6301 SOUND_EN L5972D013TR U7207 iTV_PWR 12V_iTV S A13 S A15 ...
Страница 44: ...Scaler Board Layout Top Side Part 1 44 TPT1 2A LA 7 Circuit Diagrams and PWB Layouts ...
Страница 45: ...Scaler Board Layout Top Side Part 2 45 TPT1 2A LA 7 Circuit Diagrams and PWB Layouts ...
Страница 46: ...Scaler Board Layout Top Side Part 3 46 TPT1 2A LA 7 Circuit Diagrams and PWB Layouts ...
Страница 47: ...Scaler Board Layout Top Side Part 4 47 TPT1 2A LA 7 Circuit Diagrams and PWB Layouts ...
Страница 49: ...6 5 4 Scaler Board Layout Bottom Side Part 1 49 TPT1 2A LA 7 Circuit Diagrams and PWB Layouts A B ...
Страница 50: ...50 TPT1 2A LA 7 Circuit Diagrams and PWB Layouts Scaler Board Layout Bottom Side Part 2 3 2 1 A B ...
Страница 51: ...6 5 4 C D Scaler Board Layout Bottom Side Part 3 51 TPT1 2A LA 7 Circuit Diagrams and PWB Layouts ...
Страница 52: ...3 2 1 C D 52 TPT1 2A LA 7 Circuit Diagrams and PWB Layouts Scaler Board Layout Bottom Side Part 4 ...
Страница 66: ...66 TPT1 2A LA 7 Circuit Diagrams and PWB Layouts Key Board Layout Bottom Side ...
Страница 82: ...82 TPT1 2A LA 9 Circuit Descriptions Abbreviations List and IC Data Sheets ...
Страница 83: ...83 TPT1 2A LA 9 Circuit Descriptions Abbreviations List and IC Data Sheets ...
Страница 84: ...84 TPT1 2A LA 9 Circuit Descriptions Abbreviations List and IC Data Sheets ...
Страница 85: ...85 TPT1 2A LA 9 Circuit Descriptions Abbreviations List and IC Data Sheets ...
Страница 89: ...89 TPT1 2A LA 9 Circuit Descriptions Abbreviations List and IC Data Sheets Pin assignment ...