LG FE-286E - Page 15

- 2-8 -
VKK PART
Does DC - 33V appear at
CN302 Pin .
Check the Voltage of
IC301 PIN .
Dose -33V appear at
ZD704(-)
Check the Q715
TURN ON
Check the PATTERN
Replace the Q715
Refer to power circuit
END
Check the -33V(LOW)
of C704
Replace the
ZD704(-33V)
Replace the D714,
D718, D715
YES
YES
NO
NO
P-SENS PART
Does +5V appear at ZD701?
Check the pattern of
IC301 Pin .
Check the waveform
of D713(Cathod).
Check the 5.6K of R714 and
replace ZD703(5.1V)
Replace the D713
YES
YES
NO
NO
14
28
51