LT17N23W
5-1
5 Troubleshooting
5-1 No Power
Does proper DC 14V at C602?
Check adapter for 14V and 4.5A.
Yes
No
Does proper DC 5V
appear at L601?
Change IC601 or main ass’y.
(BN91-00716A)
Yes
No
Does each proper DC1.8V, 3.3V
appear at L604, L605?
Change IC610 or main ass’y.
(BN91-00716A)
Yes
No
Does each proper DC 5V
appear at L603?
Change IC602 or main ass’y.
(BN91-00716A)
Yes
No
Does each proper DC 3.3V, 33V
appear at C618, C621?
Change IC603/IC604 or
main ass’y. (BN91-00716A)
Yes
No
Does proper DC 14V
appear at C628?
Change IC605 or main ass’y.
(BN91-00716A)
Yes
No
Does each proper DC 8V, 9V_1
appear at C635, C638?
Check IC607/IC608 and
related circuit.
Yes
No
Replace the board with new one.
1-1
1-2
1-3
1-4
1-5
1-6
1-7
Summary of Contents for LT17N23W
Page 4: ...5 Troubleshooting 5 2 LT17N23W WAVEFORMS 1 1 1 2 1 3 1 4...
Page 5: ...WAVEFORMS 1 5 1 6 1 7 5 Troubleshooting LT17N23W 5 3...
Page 7: ...5 Troubleshooting LT17N23W 5 5 WAVEFORMS 2 1 2 2 2 3 2 5 2 4...
Page 9: ...5 Troubleshooting LT17N23W 5 7 WAVEFORMS 3 1 3 2 3 3 3 4 3 5...
Page 10: ...5 Troubleshooting 5 8 LT17N23W WAVEFORMS 3 6 3 7 3 8 3 9...
Page 14: ...4 Alignments and Adjustments LT17N23W 4 3...
Page 15: ...4 Alignments and Adjustments 4 4 LT17N23W...
Page 21: ...8 Block Diagram This Document can not be used without Samsung s authorization LT17N23W 8 1...