Sharp 29F-PE550 - Page 35

29F-PE550 / 29F-PD570
4 - 2
NO LED LIGHT
Check F701
Normal
Blown out
Replace the fuse
Is the fuse again blown out ?
Does STBY+5V appear at pin 4
IC752 main unit ?
No
Check the power circuit
consisting of IC701,
IC702, D704 and its
related parts.
Yes
Check the power
circuit consisting of
IC701, IC702, T701
and its related parts.
Check 3V output
from pin 1 of IC
704 and its related
parts.
No
Yes