LG HB620 Service Manual page 126

4.17.2 Checking DVB-H/T Power Block
+1.8V_DVB_PLL
+VPWR
+1.8V_DVB_RF
L101
U105
33nH 1
VDD
2
NC1
3
VOUT
C102
C101
1u
1u
1608
1608
+1.8V_DVB_RF
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
R1131D181D
6
_CE_OR_CE DIB_PWR_EN
5
GND
4
NC2
[Fig. 4.22] DVB-H/T Power Schematic
[Fig. 4.23] DVB-H/T Power Components Placement
- 127 -
4. TROUBLE SHOOTING
+1.0V_DIB_CORE
+1.0V_DIB_MAC
DIB_PWR_EN
R109
36K
( 1% )
L102 4.7uH
2016 size
C104 100p
C103 C108
4.7u
2.2u
+1.0V_DVB_CORE
0.9857V
+VPWR
U102
AAT1143IJS-0.6-T1
1 8
EN PGND3
2 7
OUT PGND2
3 6
VIN PGND1
4 5
LX AGND
C105
4.7u
( 1% )
]
LGE Internal Use Only