LG -D620 Service Manual page 69

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10
GND2
9
ANT
8
GND1
With Control Logic in each mode
LGE Internal Use Only
11
12
13
14
15
TP2:CTRL1
U1101
CTL3
CTL2
CTL1
7 6
5 4
START
Check TP1
2.7V OK?
Yes
Check TP2/TP3/TP3
Check High Level
of each mode ?(1.5V≤TP )
Yes
Check Next step
TP3 : CTRL2
TP4:CTRL3
1
2
3
TP1
No
The Problem may be Other part
Check Logic part
No
The Problem may be Other part
Check Logic part
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Copyright © 2014 LG Electronics. Inc. All right reserved.
3. TROUBLE SHOOTING
GRFC_11
GRFC_15
GRFC_14
+2V75_VREG_L14
Only for training and service purposes
C1135

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