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6. Power Board Functions:
N
Check I/F BD
N
Replace
Q811, Q812,
Q816,
N
ZD805,Q805
Q806, Q807,
Q808, IC801
Replace
Q805,Q806,Q8
N
08, Q809,
T801, T802
Backlight did not
shine
N
+19V OK ?
Y
+5.0V
N
OK?
Y
Check CN701
PIN2
(BL-ON) is HI ?
Y
Check CN701 PIN1
(BRT-ADJ) existed ?
Y
Check Q811, Q812,
Q816, ZD805, Q803,
Q806,Q807,Q808,IC801
OK?
Y
Check
Q805,Q806,Q808,
Q809, T801, T802, OK?
Y
Replace panel
- 54 -
Check PF801
OK ?
Y
Check F851
Q857 OK?
Y
Check
F601, Q601,
R612,
R615, R623 OK ?
Y
Replace IC601
N
Replace
PF801
N
Replace
F851 Q857
Replace
F601, Q601
N
R612, R615,
R623
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