LG BL42k Manuals

Manuals and User Guides for LG BL42k. We have 1 LG BL42k manual available for free PDF download: Service Manual

LG BL42k Service Manual

LG BL42k Service Manual (215 pages)

Brand: LG | Category: Cell Phone | Size: 16.16 MB

Table of Contents

Table of Contents
2
1 Introduction

4
- Purpose
  4
- Regulatory Information
  4
2 Performance

6
- Product Name
  6
- Supporting Standard
  6
- Main Parts : GSM Solution
  6
- HW Features
  7
- SW Features
  9
- Hw Spec
  11
3 Technical Brief

15
- General Description
  15
- Gsm Mode
  16
- Umts Mode
  20
- Off-Chip Rf Components
  25
- Off-Chip Components
  28
- Pin Descriptions
  30
- General Description
  32
- Power Management
  44
- Sub System
  49
4 Trouble Shooting

58
- RF Component
  58
- RF Path
  60
- Gsm Path
  61
- Trouble Shooting of GSM Part (GSM900/1800/1900)
  62
- Trouble Shooting of WCDMA Part
  70
- Checking Bluetooth Block
  76
- Checking FM Radio Block
  81
- Power on Troubleshooting
  84
- Charger Troubleshooting
  87
- USB Troubleshooting
  88
- USIM Detect Troubleshooting
  90
- Camera Troubleshooting
  92
- Main Side View LED Troubleshooting
  94
- Slide Key Side View LED Troubleshooting
  96
- LCD Troubleshooting
  98
- Vibrator Troubleshooting
  100
- Receiver Path
  101
- Headset Path
  104
- Speaker Phone Path
  106
- Main Microphone
  109
- Headset Microphone
  111
5 Download

113
- Introduction
  113
- Downloading Procedure
  114
- Connecting to Pc
  116
- Troubleshooting Download Errors
  130
- Start Button
  131
- Caution
  135
6 Block Diagram

136
7 Circuit Diagram

146
8 BGA Pin Map

160
9 Pcb Layout

166
10 Calibration

176
11 Test Mode

179
12 Exploded View & Replacement

188
Exploded View & Replacement Part List

188
- Exploded View
  188
- Replacement Parts
  190
- Main Component
  196
- Accessory
  214

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