LG KF750 Service Manual page 136
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- User manual (266 pages) ,
- Quick reference manual (226 pages) ,
- Brochure & specs (12 pages)
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TP08_BT
BT IC Output(C803)
6
BT IC Output(C803)
voltage level at
Check
1 1
2
C804, C808, C809 and C810
3
4
with
Oscilloscope
Check frequency
BT CLK (R803)
5
with
Oscilloscope
Check Power level
t BT IC Output (C803)
a
6
with
Spectrum Analyzer
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
F
L
8
0
0
D
5
B
P
1
4
B
P
2
V
S
S
1.8V,
2.75V ?
at
26MHz ?
Range
-2 ~ 2dBm ?
Check Next Stage
- 137 -
4. TROUBLE SHOOTING
TP08_BT
BT IC Output(C803)
E
A
2
1
2
4
5
0
B
T
7 -
0
4
3
C
1
3
9 .
n
H
C
8
0
2
1
U
_
B
P
2
B
P
_
D
C
L
8
0
0
3
3 .
n
H
_
B
T
_
R
F
V
S
S
_
B
T
_
R
F
V
S
No
Check PMIC Block
Yes
No
Yes
No
Change BT Chip (U801)
Yes
6
O
U
T
8
0
1
O
U
T
8
0
2
O
U
T
1
2 .
p
L
8
0
1
S
_
B
T
_
R
F
Check VCXO(X100) block
LGE Internal Use Only
8
0
3
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Troubleshooting
