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LG GD910 Service Manual
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LGE Internal Use Only
Copyright © 2009 LG Electronics. Inc. All right r
eserved.
Only for training and service purposes
3.
BB Circuit T
echnical brief
GD910
servi
c
e
m
a
nual
3.11 5 PIN Interface connector
GD910
service
m
a
nual
1 VCHG
2 GND
3 Multipor
t1
4 Multipor
t2
5 VBUS
[T
able 3.11-1] PIN assign
42
44
Table of Contents
Default Chapter
2
Table of Contents
2
1 Introduction
4
Purpose
4
Regulatory Information
4
Abbreviations
6
2 Performance
8
Supporting Standard
8
Main Parts : Solution
8
H/W Features
8
HW Spec
10
3 BB Circuit Technical Brief
15
Functional Block Diagram
15
Baseband Processor Introduction
16
Power Management IC
29
Power ON/OFF
36
SIM Interface
37
Memory
38
LCD Display
39
LCD Back-Light Illumination
40
Battery Voltage Monitor
41
Audio
42
PIN Interface Connector
43
4 RF Circuit Technical Brief
44
General Description
44
GSM Part
48
WCDMA Part
52
GSM Power Amplifi er Module
55
WCDMA Band1 Power Amplifier Module
56
WCDMA Band1/8 Low Noise Amplifier
57
WCDMA Band1 Duplexer
58
Bluetooth
59
5 Trouble Shooting
61
Trouble Shooting Test Setup
61
Power on Trouble
62
Charging Trouble
66
USB Trouble
69
SIM Detect Trouble
71
Side Key Trouble
74
Audio Trouble
75
Microphone Trouble
77
VGA Camera
79
Main LCD Trouble
81
Main Clock Part
83
RF Component
84
Rf Signal Path
85
Trouble Shooting of GSM Part
86
Trouble Shooting of WCDMA Part
95
Trouble Shooting of Bluetooth
102
6 Download & S/W Upgrade
105
S/W Download Setup
105
Download Program User Guide
106
7 Block Diagram
109
8 Circuit Diagram
110
9 BGA Pin Map
114
10 Pcb Layout
118
11 RF Calibration
120
Test Equipment Setup
120
Calibration Step
120
12 Exploded View & Replacement Part List
126
Exploded View
126
Replacement Parts
128
Accessory
146
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LG GD910 Specifications
General
Brand
LG
Model
GD910
Category
Cell Phone
Language
English
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