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SERVICE MANUAL
MODEL : LG-600
GSM Phone
SERVICE MANUAL
MODEL : LG-600
Table Of Contents
1. Introduction ................................... 2 5.2.5 LCD Trouble ............................ 26
5.2.6 Charge Trouble ........................ 27
2. Specification & Feature .......... 2 5.2.7 Vibrator is not working ............. 28
2.1 Product Name .................................. 2 5.2.8 Backlight is not Working .......... 29
2.2 Supporting Standard ........................ 2 5.2.9 TX POWER Trouble(E-GSM) ..... 30
2.3 Main Parts ........................................ 2 5.2.10 TX Power Trouble(DCS) ........ 32
2.4 Main Features .................................. 3 5.2.11 RX Sensitivity
2.5 HW Features .................................... 4 Trouble (E-GSM) ................... 34
2.6 SW Features .................................... 6 5.2.12 Rx Sensitivity
Trouble(DCS) ......................... 37
3. Keypad Arrangement &
Functions .......................................10 6. PCB Diagram & Testpoint
3.1 Keypad Arrangement ..................... 10
Description ................................. 40
3.2 Functions of Keys .......................... 11
7. Block Diagram ........................... 45
4. Disassembly/Reassembly ... 12 7.1 BB Block Diagram .......................... 45
4.1 Disassembly .................................. 12 7.2 RF Block Diagram ......................... 46
4.1.1 Disassembly of Upper Case/Lower
Case ........................................ 12 8. Schematic Diagram ................ 47
4.1.2 Disassembly of Lower-Case 8.1 Key Pad
Components ............................ 13 (LCD Interface & Earphone) .......... 48
4.1.3 Assembly of Lower Case ......... 15 8.2 Main Board .................................... 48
4.1.4 Disassembly of PCB ................ 16 8.2.1 Baseband(Ulysse & Omega) ... 49
8.2.2 Memory Devices ...................... 50
5. Data Kit & Test Method ......... 17 8.2.3 Audio & Peripheral Circuit ........ 51
5.1 Data Kit .......................................... 17 8.2.4 I/O & B' to
5.1.1 Download Equipment ............... 17 B Connector Interface .............. 51
5.1.2 Data Kit Download 8.3 RF Top Schematic ......................... 52
Procedure ................................ 17 8.3.1 RF Front End ........................... 52
5.1.3 Test Equipment ........................ 21 8.3.2 RF Main ................................... 53
5.1.4 Test Equipment Setup ............. 21
5.2 Test Method ................................... 22
9. EXPLODED VIEW ..................... 55
5.2.1 Power-On Trouble ................... 22 10. Replacement Parts list ....... 56
5.2.2 MIC Trouble ............................. 23
5.2.3 RECEIVER Trouble ................. 24
5.2.4 Melody Trouble ........................ 25
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1. Introduction
1. Introduction
LG-600 is a folder type mobile phone operated in the GSM Digital Cellular Mobile Radio System, which
is the Pan-European mobile cellular standard. LG-600 has the operation band of GSM 900 and DCS
1900. GSM Phase II features are fully supported and parts of the GSM Phase II+ features are also
supported. About the SIM Toolkit, LG-600 supports up to Class 3 including Class 1, 2. For speech
communication, LG-600 supports Full Rate(FR), Enhanced Full Rate(EFR) and Half Rate(HR).
For easy text, eZi Text is implemented and WAP protocol is adopted for internet connection.
2. Specification & Feature
2.1 Product Name
Model Design GPRS support LCD
LG-600 Folder type Not support Dual LCD
2.2 Supporting Standard (LG-600)
Item Feature
Supporting Standard GSM 900/DCS Dual Band
E-GSM
Phase 2 and Phase 2+
SIM Toolkit : Class 2
Frequency Range E-GSM TX : 880