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LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4.15.4 Checking VCC
Main Board (Bottom side) : Power for Radio ASIC
2.8V OK?
No
Yes
1.8V OK?
Yes
No
Check the AB3000
Check the AB3000
Check Point
VDIGRAD_1V8
(R603)
Common Input Power is OK
See The Next Part
Check Point
VRADA_2V8
(R602)
AB3000
R602 (VRADA_2V8)
R603 (VDIGRAD_1V8)
Schematic (Power)
1u
C602
VRADA_2V8
VDDC_2V65
VDDG_2V75
VDDF_2V5
VDDK_2V75
R639
0
C603
2.2u
VDDH_CAM_CORE
VDDD_1V5
VBAT
R602
0
VDIGRAD_1V8
1u
C601
F12
VDD_D
VDD_E
D12
C12
VDD_A
EXTLDO
B11
VDDE_1V8
0
R603
VDDC_2V65
VDDE_1V8
VRADA_2V8
VDDD_1V5
VDIGRAD_1V8
VBAT
AB3000
VRADA_2V8 (RF3000, RF3100 analog, Power Detector)
VDIGRAD_1V8 (RF3000, RF3100 digital)
TP06_RF
C503 (VDD_E)
Z3X-BOX.COM
Содержание KT520
Страница 231: ...Note Z 3 X B O X C O M ...
Страница 232: ...Note Z 3 X B O X C O M ...