25
Troubleshooting guide
1. No raster
Turn-on power supply, check
if the red indicator is light in
the STANDBY?
Check if PIN8(5V) of CPU
board is normal?
Check STANDBY circuit of
power supply board
Press POWER button in the
unit button and sensor control,
check the indicator.
Check if the PIN12 of X503 in
CPU board is high-level?
Check if the PIN12 of X501 in
CPU board is high-level?
Check power supply board
Check back light board
yes
no
no
blue
red
no
yes
Replacing N801
no
yes
Summary of Contents for LC-27U16
Page 1: ...LCD TELEVISION LC 27U16 A m e r i c a ...
Page 26: ...24 Wiring diagram ...
Page 30: ...CPU board 1 ...
Page 31: ...CPU board 2 ...
Page 32: ...CPU board 3 ...
Page 33: ...CPU board 4 ...
Page 34: ...CPU board 5 ...
Page 35: ...CPU board 6 ...
Page 36: ...CPU board 7 ...
Page 37: ...CPU board 8 ...
Page 38: ...TV board ...
Page 39: ...KEYS BOARD ...
Page 40: ...IR board ...
Page 41: ...Power supply board of 23 and 27 ...
Page 42: ...Power supply board of 32 ...
Page 43: ...APPENDIX Exploded views LC 27U16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 18 19 20 17 ...