LG KE990c Manuals

Manuals and User Guides for LG KE990c. We have 1 LG KE990c manual available for free PDF download: Service Manual

LG KE990c Service Manual

LG KE990c Service Manual (204 pages)

Service Manual

Brand: LG | Category: Cell Phone | Size: 7.91 MB

Table of Contents

Table of Contents
2
1 Introduction

4
- Purpose
  4
- Regulatory Information
  4
2 Performance

6
- Supporting Standard
  6
- Main Parts : Solution
  6
- HW Features
  7
- Hw Spec
  9
3 Technical Brief

14
- General Description
  14
- GSM Mode
  16
- LO Generation and Distribution Circuits
  19
- Off-Chip RF Components
  20
- Digital Baseband (DBB/ESM6270)
  27
- Subsystem(Esm6270)
  30
- Power Block
  37
- External Memory Interface
  42
- H/W Sub System
  44
- Feature List
  60
- Multimedia Chip Interface
  66
- Touch Screen Interface
  72
- Main Features
  73
- Main Component
  74
4 Trouble Shooting

80
- RF Component
  80
- Main Component
  81
- Checking VCTCXO Block
  82
- Checking Front-End Module Block
  84
- Checking GSM Block
  87
- Power on Trouble
  93
- SIM Detect Trouble
  98
- Key Sense Trouble (KEYPAD)
  99
- Keypad Backlight Trouble
  101
- Micro SD Trouble
  103
- Audio Trouble
  104
- Camera Trouble
  117
- Main LCD Trouble
  120
- Bluetooth Trouble
  123
- Bluetooth Rf Test
  124
- Touch Screen Trouble
  125
5 Download

126
- Introduction
  126
- Downloading Procedure
  126
- Connecting to Pc
  127
- Troubleshooting Download Errors
  141
- Caution
  146
6 Block Diagram

147
- GSM RF Block
  147
- Interface Diagram
  149
7 Circuit Diagram

152
8 BGM Pin Map

162
9 Pcb Layout

168
10 Calibration & RF Auto Test Program (Hot Kimchi)

172
- Usage of Hot-Kimchi
  172
11 Exploded View & Replacement Part List

176
- Exploded View
  176
- Replacement Parts
  178
- Mechanic Component
  178
- Main Component
  182
- Accessory
  202

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