LW17M24C/LW20M21C
5-1
5 Troubleshooting
5-1 No Power
Does proper DC 14V/5V
appear at Pin 3. Pin 9 of
CN100?
Check CN803 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 IC111.
Yes
Does proper DC B1.8V
appear at Pin 4 of IC112?
Check IC112.
Yes
Does proper DC B8V
appear at FT130?
Check IC109.
1
2
3
4
5
Summary of Contents for LW17M24C
Page 7: ...Memo 2 Product Specifications 2 4 LW17M24C LW20M21C ...
Page 11: ...Memo 3 Disassembly and Reassembly 3 4 LW17M24C LW20M21C ...
Page 19: ...5 Troubleshooting LW17M24C LW20M21C 5 3 WAVEFORMS 1 2 5 3 6 4 4 7 8 ...
Page 22: ...Memo 5 Troubleshooting 5 6 LW17M24C LW20M21C ...
Page 24: ...6 Exploded View Parts List 6 2 LW17M24C LW20M21C 6 2 LW20M21C ...
Page 50: ...9 Schematic Diagrams 9 2 LW17M24C LW20M21C Memo ...
Page 52: ...10 PCB Layout 10 2 LW17M24C LW20M21C Memo ...
Page 54: ...11 Schematic Diagrams 11 2 LW17M24C LW20M21C 1 2 5 3 6 4 7 8 ...
Page 56: ...11 Schematic Diagrams 11 4 LW17M24C LW20M21C 9 ...
Page 62: ...11 Schematic Diagrams 11 10 LW17M24C LW20M21C Memo ...
Page 64: ...www s manuals com ...