LG D405 Service Manual page 77

HPH_L
HPH_REF
HPH_R
LINE_OUT1
LINE_OUT2
VDD_BUCK
U6100
BUCK_VSW
WCD9302
BUCK_VOUT1
BUCK_VOUT2
GND_BUCK
-NCP_VNEG
NCP_C1P
-NCP_C1M
SPKR_DRVP
SPKR_DRVM
VDD_SPKDRV
GND_SPKDRV_1
GND_SPKDRV_2
GND4
TP1(FB6100)
<Min Bot>
LGE Internal Use Only
16
17
21
36
TP1(FB6100)
32
3 0620
Note.1(06/06)
FB6100
13
1000
6
12
7
11
C6107 1u
2
1
Dedicate a ground island for the buck/NCP ground connections.
49
50
45
55
40
18
10V
0.2
RevC)131111-FM
HPH_REF
LINE_OUT_IRRC
LINE_OUT1
LINE_OUT2
VREG_S4_2P1
(06/27) 10V->6.3V
Note.2(06/06)
SPK_P
R6107
SPK_N
TP2(R6107)
R6108
- 77 - Copyright © 2014 LG Electronics. Inc. All right reserved.
3. TROUBLE SHOOTING
1105
HPH_L
HPH_R
0
+VPWR
DNI
+VPWR_BOOST_BYPASS
TP2(R6107)
<Min Top>
Only for training and service purposes