22
2. Troubleshooting guide
2.1. No raster
Turn-on power supply, check
if the red indicator is light in
the STANDBY?
Check if PIN 3(5V) of XS11
on main board is normal?
Check STANDBY circuit of
power supply board
Press POWER button on the
unit or remote control and
check the indicator.
Check if the PIN 9, 10 of XS11 on main
board is high-level?
Check if the PIN 11 of XS11
on main board is low-level?
Check power
supply board
Check back light board
yes
no
no
red
blue
no
yes
Check NS2 and its
peripheral circuit
no
yes
Check N801 and its
peripheral circuit
Summary of Contents for LC-19HU56S
Page 1: ...LCD TELEVISION LC 19HU56S...
Page 11: ...9 6 Select the document then the window will appear as shown below Select...
Page 18: ...16 2 TDA7266SA The TDA7266SA is a dual bridge amplifier...
Page 20: ...18...
Page 27: ...Main Board Schematic diagrams Page 1 total 8 pages 25...
Page 28: ...Main Board Schematic diagrams Page 2 total 8 pages 26...
Page 29: ...Main Board Schematic diagrams Page 3 total 8 pages 27...
Page 30: ...Main Board Schematic diagrams Page 4 total 8 pages 28...
Page 31: ...Tuner Board Schematic diagrams Page 5 total 8 pages 29...
Page 32: ...IR Key Board Schematic diagrams Page 6 total 8 pages 30...
Page 33: ...Power Board Schematic diagrams Page 7 total 8 pages 31...
Page 34: ...Back light Board Schematic diagrams Page 8 total 8 pages 32...
Page 36: ...APPENDIX B Exploded view LC 19X56 34...
Page 38: ...9219HU5610 Ver 1 0...
