Text preview for : N2750w-1E.pdf part of Viewsonic N2750w-1E Viewsonic Телевизор LCD Телевизор LCD Viewsonic N2750W-1E.1A N2750w-1E.pdf
Back to : N2750w-1E.pdf | Home
N2750W(E) Service Manual
TABLE OF CONTENTS
PAGE
1. PRECAUTION AND NOTICES ------------------------------------------------------------------------------------- 1~2
1.1. SAFETY PRECAUTIONS ---------------------------------------------------------------------------------------- 1
1.2. PRODUCT SAFETY NOTICE ----------------------------------------------------------------------------------- 1
1.3. SERVICE NOTES-------------------------------------------------------------------------------------------------- 1
2. SERVICE TOOL & EQUIPMENT REQUIRED ---------------------------------------------------------- 2
3. SPECIFICATIONS ----------------------------------------------------------------------------------------------------- 2~4
3.1. PRODUCT SPECIFICATIONS------------------------------------------------------------------------------ 2
3.2. FACTORY PRESET MODE TIMING CHART ---------------------------------------------------------- 3
3.3. D-SUB CONNECTOR -------------------------------------------------------------------------------------------- 4
4. EXPLODED VIEW AND PARTS LIST --------------------------------------------------------------------------- 5~6
4.1. EXPLODED VIEW ------------------------------------------------------------------------------------------------ 5
4.2. EXPLODED VIEW PARTS LIST -------------------------------------------------------------------------------- 6
5. BLOCK DIAGRAM ---------------------------------------------------------------------------------------------------- 7
6. SCHEMATIC DIAGRAM -------------------------------------------------------------------------------------------- 8~19
6.1. DB-15 Input and YPbPr ----------------------------------------------------------------------------------------- 8
6.2. DVI-D Interface --------------------------------------------------------------------------------------------------- 9
6.3. VIDEO Input I/F -------------------------------------------------------------------------------------------------- 10
6.4. VPC3230D & SCART_V ----------------------------------------------------------------------------------------- 11
6.5. CPU_FLASH_SRAM --------------------------------------------------------------------------------------------- 12
6.6. Memory_SDRAM64Mbit x2 ------------------------------------------------------------------------------------- 13
6.7. MN203 -------------------------------------------------------------------------------------------------------------- 14
6.8. LVDS and PANEL POWER ------------------------------------------------------------------------------------- 15
6.9. AUDIO ------------------------------------------------------------------------------------------------------------- 16
6.10. Power --------------------------------------------------------------------------------------------------------------- 17
6.11. Output Debug Port ----------------------------------------------------------------------------------------------- 18
6.12. Teletext ------------------------------------------------------------------------------------------------------------- 19
7. WORKING THEOREM----------------------------------------------------------------------------------------------- 20~21
8. WIRING DIAGRAM --------------------------------------------------------------------------------------------------- 22
9. PCB LAYOUT ----------------------------------------------------------------------------------------------------------- 23~28
9.1. MAIN PCB TOP VIEW ------------------------------------------------------------------------------------------- 23
9.2. MAIN PCB BOTTOM VIEW ------------------------------------------------------------------------------------- 24
9.3. KEYPAD PCB TOP VIEW --------------------------------------------------------------------------------------- 25
9.4. KEYPAD PCB BOTTOM VIEW --------------------------------------------------------------------------------- 26
9.5. IR PCB TOP VIEW------------------------------------------------------------------------------------------------ 27
9.6. IR PCB BOTTOM VIEW ----------------------------------------------------------------------------------------- 28
10. TROUBLE SHOOTING FLOW CHART ------------------------------------------------------------------------- 29~33
10.1. NO LED/SCREEN DISPLAY AFTER AC POWER ON - MCU REGION ------------------------ 29
10.2. NO DISPLAY AFTER AC POWER ON