4 Troubleshooting
4-2
4-2 Checkpoints by Error Mode
4-2-1 No Power
Does proper DC 14V/5V
appear at Pin 3. Pin 9 of
CN100?
Check connector Pin3, Pin9 in
I/P Board.
Yes
No
No
No
No
No
Does proper DC A5V
appear at FT144?
Check IC101 and IC105.
Yes
Does proper B3.3V
appear at Pin 2 of IC111?
Check IC102.
Yes
Does proper DC B1.8V
appear at Pin 4 of Q802,
Q803?
Check Q802, Q803.
Yes
Does proper DC B8V
appear at IC109?
Check IC109.
1
2
3
4
5
No
No
No
Check IC800 and IC400.
Yes
Does proper DC 5V_P
appear
at Pin 2 of IC108?
Check IC108.
Yes
Does proper DC 9V_S
appear at IC110?
Check IC110.
Yes
Yes
Does proper DC B5V
appear at IC120?
Check IC120.
6
7
8
Содержание LE15S51BP
Страница 11: ...7 Block Diagrams 7 1 7 Block Diagram ...
Страница 12: ...Memo 7 Block Diagrams 7 2 ...
Страница 13: ...13 Circuit Descriptions 13 1 13 Circuit Descriptions 13 1 Overall Block Structure ...
Страница 14: ...13 Circuit Descriptions 13 2 13 2 1 MAIN BOARD POWER TREE 13 2 Partial Block Description ...
Страница 16: ...13 Circuit Descriptions 13 4 ...
Страница 82: ...12 PCB Layout 12 2 12 1 2 Power board LE15S51BP ...
Страница 83: ...12 PCB Layout 12 3 12 1 2 Power board LE20S51BP CNI803 Pannel Control Connecter ...
Страница 84: ...12 PCB Layout 12 4 Memo ...
Страница 88: ...Memo 1 Precautions 1 4 ...
Страница 94: ...Memo 2 Product Specifications 2 6 ...
Страница 106: ...9 Schematic Diagrams 9 2 1 2 5 3 6 4 7 8 ...
Страница 107: ...9 Schematic Diagrams 9 3 This Document can not be used without Samsung s authorization 9 2 UOC III Schematic Diagram ...
Страница 108: ...9 Schematic Diagrams 9 4 9 ...
Страница 111: ...9 Schematic Diagrams 9 7 ...
Страница 112: ...9 Schematic Diagrams 9 8 ...
Страница 114: ...9 Schematic Diagrams 9 10 ...
Страница 117: ...4 Troubleshooting 4 3 WAVEFORMS 1 2 5 3 6 4 4 7 8 ...
Страница 120: ...4 Troubleshooting 4 6 Memo ...
Страница 122: ...8 Wiring Diagrams 8 2 Memo ...