CONFIDENTIAL
–
DO NOT COPY
Page 9-5
File No. SG-0000034
Yes
N0
The voltage is +12V while power
switch on
1. J4 connection good
2. Check power board
3.check J4 pin11 is ok
The voltage is VCCK while power
switch on
1. Check
U15 OPWRSB Pi
Yes
Yes
Yes
Yes
Yes
Yes
Yes
N0
N0
N0
N0
N0
N0
N0
Yes
N0
TROUBLE
OF
DC-DC
CONVERTER
Start
J4 PIN1,2,3
J4 PIN 8,9,10
The voltage is 5VSB
1. Check power board
2. Check power cable connection J4
CE15
CE10
The voltage is about +3.3V
CE16.
The voltage is about +3.3V
U8 pin2
The voltage is about +1.25V
FB17
The voltage is about +3.3V
U52 pin2
The voltage is about +1.8V
END
U10 pin3
The voltage is about +5V
Содержание 42LV4400
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