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- . M
o d
o e
Check external power
suppply
Pictur e 1: Power
nits Pr o lem Solving
Pictur e 1: Power
(M ain oar d can not oot)
(M ain oar d can not oot)
l e
e
o le
ol
N
nits Pr o lem Solving
In stand- y condition
Check pin 1of 26
Whether got 12V
N
Check the 6
13
related devices
Whether switch chip 1 work
Whether switch chip 18 work
Whether power chip LDO( 9) works
power chip LDO( 7) works
diode (D16) works
power chip ( 6) works
- 0 -
Service Manual
Model No.:
Y
Whether main oard testing TP7point got 5V
testing
point TP10 got 3.3v
Y
Normal ooting
After power on check whether
testing point TP1 got 12v
testing point TP9 got 5v
testing point TP5 got 3.3v
testing point TP6 got 1.8v
testing point TP8 got 2.5v
testing
point TP2 got 1.32v
N
Y
OK
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