LG SN4A - Page 41

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C205
10pF
NC
USB_GND
USB_5V
USB_5V
C206
10pF
NC
JK201
1
5V
2
USB D-
3
USB D+
4
DGND
D-
D+
202C
Fu01
302C
Fu01
C200
220uF
NC
DGND
102C Fn001
USB1_DP
USB1_DN
FB201
1
2
3
4
D201
uCLAMP0561P
R210 4.7
R211 4.7
USB
MPEG
ONE POINT REPAIR GUIDE
NO SOUND
2-4. USB
2-4-1. Solution
Replace MAIN board.
2-4-2. How to troubleshoot (Countermeasure)
1) Please check USB_5V at JK201 pin1.
2) If soldering status and voltage has abnormal status, replace MAIN board.
2-4-3. Service hint (Any picture / Remark)
< MAIN board bottom view >
JK201
JK201