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LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
4.15.4 Checking VCC
(Bottom)
AB3000
R605 (VDD_A)
R607 (VDD_E)
Figure 4-9-1. Power for Radio ASIC
➃
Figure 4-9-2. Schematic (Power)
VRADA_2V75 (RF3000, RF3100 analog, Power Detector)
AB3000
1%
1%
1%
1%
VDDD_1V5
1u
2.2u
C603
C601
VDD_D
VDD_E
D12
C8
VDDADC
C12
VDD_A
A11
VDD C
F12
EXTLDO
B11
B9
ADOUT
G4
ADSTR
C602
1u
0
R608
0
R605
R607
0
0
R606
VDIGRAD_1V8 (RF3000, RF3100 digital)
2.75V
OK?
No
Yes
1.8V OK?
Yes
No
Check the Vincenne2
Check the Vincenne2
Check Point
VDD_E (R607)
Common Input Power is OK
See The Next Part
Check Point
VDD_A (R605)
Содержание KU580
Страница 1: ...Date August 2007 Issue 1 0 Service Manual Model KU580 Service Manual KU580 Internal Use Only ...
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Страница 208: ...Note ...
Страница 209: ...Note ...