LG FE-286E - Page 16

- 2-9 -
Power Circuit
Check the Fuse
Check the DC output
C736
Check the DC Output of C738
Check the output of
IC703, IC782, IC783
Check the 5V of CN513
Pin 7 (CD FUNCTION)
END
Replace the Fuse
Check the AC output of
CN701 Pin4, 5
Check the AC Output of
CN701 PIN 1, 3
Replace the IC782
Replace the D745, D746,
D747, D748
Check the D741, D742,
D744, D734 or Replace.
Check the IC703, IC782,
IC783 or Replace.
Check the Q713 “B”:HIGH,
Q711 “B”:LOW
Check the High of
Q713 “B” or Replace
Check the IC301
or Replace
Replace the Q713, Q711
Check the power Ass’y or
Replace the Transformer
Check the power Ass’y or
Replace the Transformer
Check the 5V of IC301
PIN 17,46,72,90
Check the High of
IC301 Pin 3.
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO