LG GX / SPN5-W - Page 44

3-11
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Only for training and service purposes.
< USB board top view >
TPK09
TPK01
DK01
TPK05
20
KC
Fu0
1
TPK04
USB_5V
DGND
1
0K
C
F
n
001
TPK02
JKK01
1
@pinCo
2
@pinCo
3
@pinCo
4
@pinCo
TPK03
USB_5V
FBK01
DK02
DF3D6.8MS
3
1
2
DGND
TPK06
TPK07
TPK08
CNK02
1
@pinCo
2
@pinCo
3
@pinCo
4
@pinCo
CNK01
1
@pinCo
2
@pinCo
3
@pinCo
4
@pinCo
5
@pinCo
6
@pinCo
7
@pinCo
8
@pinCo
DGND
FLK01
90ohm,150mA, DCR1.4ohm
12
34
10KAC
F
u033
RK01
0
RK02
0
5
0KCF
n
0
01
40KC
Fu
01
3
0KC
Fu
01
ONE POINT REPAIR GUIDE
NO SOUND
2-4. USB
2-4-1. Solution
Replace USB board.
2-4-2. How to troubleshoot (Countermeasure)
1) Please check USB_5V at JKK01 pin1.
2) If USB_5V has abnormal status, replace USB board.
2-4-3. Service hint (Any picture / Remark)
JKK01
JKK01
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
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