6-1
TROUBLE SHOOTING
TABLE OF CONTENTS
page
1. No display of screen(Screen is black ,color of LED is amber) ........................................6-2
2. Nothing displays on screen(Screen is black ,color of LED is green) ...............................6-3
3. Checking the back light unit .............................................................................................6-6
4. Abnormal screen ..............................................................................................................6-7
5. No OSM display ..............................................................................................................6-9
6. Abnormal Auto adjustment ............................................................................................ 6-11
7. Abnormal plug and play operation .................................................................................6-12
7.1 Abnormal DDC1 ...........................................................................................................6-12
7.2 Abnormal DDC2 ...........................................................................................................6-12
8. Checking the interface circuit of sync signal ..................................................................6-13
8.1 Checking the control circuit of horizontal sync pulse ...................................................6-13
8.2 Checking the control circuit of vertical sync pulse .......................................................6-13
9. Checking the resolution change IC movement ..............................................................6-14
10. No power on ................................................................................................................6-15
11. Checking the DC/DC converter circuit .........................................................................6-16
12. Checking the operation of CPU ...................................................................................6-17
Summary of Contents for NEC MultiSync LCD1525V LCD1525V LCD1525V
Page 8: ...1 5 MultiS 4 Figure E 1 Figure C 1 Figure D 1 Clip A Clip B Power Switch Quick Start cont...
Page 9: ...1 6 5 Quick Start cont...
Page 22: ...1 19 2 B Version User s Manual...
Page 31: ...1 28 Installation E 9 MultiSyn Figure D 1 Figure E 1 Figure C 1 Clip B Clip A Power Button...
Page 32: ...1 29 E 10 Installation...
Page 46: ...3 2 Photo 2 Photo 3 Screw B Screw C HOOK...
Page 47: ...3 3 Photo 4 Photo 5 Screw D Screw E FUNCTION BD ASSY P601 Screw E Screw E...
Page 109: ...for Human Potential...