20
TPT1.1A LA
5. Service Modes, Error Codes and Fault Finding
5.3 Repair Flow Chart
1.No work/LED is off
Check if
power switch is
normal
No
Replace Power switch
Yes
Check
IR board CN001
pin1=0V,pin2=3.7V,
pin3=3V,pin4=2.85V
,pin5=5V,pin6
=3.3V
Check IR board
Yes
Check scaler board U102
pin1=14V,pin4=1.22V,
pin7=16V,pin8=5V,
No
Summary of Contents for 37TA2800/98
Page 48: ...Scaler Board Layout Top Side Part 1 48 TPT1 1A LA 7 Circuit Diagrams and PWB Layouts ...
Page 49: ...Scaler Board Layout Top Side Part 2 49 TPT1 1A LA 7 Circuit Diagrams and PWB Layouts ...
Page 50: ...Scaler Board Layout Top Side Part 3 50 TPT1 1A LA 7 Circuit Diagrams and PWB Layouts ...
Page 51: ...Scaler Board Layout Top Side Part 4 51 TPT1 1A LA 7 Circuit Diagrams and PWB Layouts ...
Page 62: ...62 TPT1 1A LA 7 Circuit Diagrams and PWB Layouts KEY Board Layout Top Side for 37TA 42TA ...
Page 65: ...65 TPT1 1A LA 7 Circuit Diagrams and PWB Layouts IR Board Layout Top Side for 37TA 42TA ...
Page 83: ...83 TPT1 1A LA 9 Circuit Descriptions Abbreviations List and IC Data Sheets ...
Page 84: ...84 TPT1 1A LA 9 Circuit Descriptions Abbreviations List and IC Data Sheets ...
Page 85: ...85 TPT1 1A LA 9 Circuit Descriptions Abbreviations List and IC Data Sheets ...
Page 86: ...86 TPT1 1A LA 9 Circuit Descriptions Abbreviations List and IC Data Sheets ...
Page 90: ...90 TPT1 1A LA 9 Circuit Descriptions Abbreviations List and IC Data Sheets Pin assignment ...
