L1512S Service Manual
10/24/2002
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.
SUPPORTING TIMING CHART
---------------------------------------------------------------------------- 3~4
3.3. D-SUB CONNECTOR -------------------------------------------------------------------------------------------- 4
4. EXPLODED VIEW AND PARTS LIST --------------------------------------------------------------------------- 5~7
4.1. EXPLODED VIEW------------------------------------------------------------------------------------------------ 5
4.2. EXPLODED VIEW PARTS LIST-------------------------------------------------------------------------------- 6
5. BLOCK DIAGRAM---------------------------------------------------------------------------------------------------- 7
6. SCHEMATIC DIAGRAM -------------------------------------------------------------------------------------------- 8~14
6.1. VGA INPUT -------------------------------------------------------------------------------------------------------- 8
6.2. MVZ ----------------------------------------------------------------------------------------------------------------- 9
6.3. MCU----------------------------------------------------------------------------------------------------------------- 10
6.4. OUTPUT CONNECTOR ----------------------------------------------------------------------------------------- 11
6.5. Panel_Power ------------------------------------------------------------------------------------------------------- 12
6.6. AC-DC Power------------------------------------------------------------------------------------------------------ 13
7. WORKING THEOREM----------------------------------------------------------------------------------------------- 14
8. WIRING DIAGRAM--------------------------------------------------------------------------------------------------- 15
9. PCB LAYOUT----------------------------------------------------------------------------------------------------------- 16~21
9.1. MAIN PCB TOP VIEW ------------------------------------------------------------------------------------------- 16
9.2. MAIN PCB BOTTOM VIEW------------------------------------------------------------------------------------- 17
9.3. CON PCB TOP VIEW -------------------------------------------------------------------------------------------- 18
9.4. CON PCB BOTTOM VIEW -------------------------------------------------------------------------------------- 19
9.5. POWER PCB TOP VIEW ---------------------------------------------------------------------------------------- 20
9.6. POWER PCB BOTTOM VIEW ---------------------------------------------------------------------------------- 21
10. TROUBLE SHOOTING FLOW CHART ------------------------------------------------------------------------- 22~24
10.1. NO POWER -------------------------------------------------------------------------------------------------------- 22
10.2. NO DISPLAY------------------------------------------------------------------------------------------------------- 23
10.3. NO SOUND -------------------------------------------------------------------------------------------------------- 24
11. ADJUSTMENT---------------------------------------------------------------------------------------------------------- 25~26
11.1. ADJUSTMENT CONDITIONS AND PRECAUTIONS------------------------------------------------------- 25
11.2. MAIN ADJUSTMENTS ------------------------------------------------------------------------------------------- 25
11.3. ALIGNMENT PROCEDURES----------------------------------------------------------------------------------- 25
12. ELECTRICAL PARTS LIST ---------------------------------------------------------------------------------------- 27~34
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