Table Of Contents - LG -600 Service Manual

1. Introduction ...................................
2. Specification & Feature
2.1 Product Name .................................. 2
2.2 Supporting Standard ........................ 2
2.3 Main Parts ........................................ 2
2.4 Main Features .................................. 3
2.5 HW Features .................................... 4
2.6 SW Features .................................... 6
3. Keypad Arrangement &
Functions .......................................
3.1 Keypad Arrangement ..................... 10
3.2 Functions of Keys .......................... 11
4. Disassembly/Reassembly
4.1 Disassembly .................................. 12
4.1.1 Disassembly of Upper Case/Lower
Case ........................................ 12
4.1.2 Disassembly of Lower-Case
Components ............................ 13
4.1.3 Assembly of Lower Case ......... 15
4.1.4 Disassembly of PCB ................ 16
5. Data Kit & Test Method
5.1 Data Kit .......................................... 17
5.1.1 Download Equipment ............... 17
5.1.2 Data Kit Download
Procedure ................................ 17
5.1.3 Test Equipment ........................ 21
5.1.4 Test Equipment Setup ............. 21
5.2 Test Method ................................... 22
5.2.1 Power-On Trouble ................... 22
5.2.2 MIC Trouble ............................. 23
5.2.3 RECEIVER Trouble ................. 24
5.2.4 Melody Trouble ........................ 25

Table Of Contents

2
.......... 2
10
... 12
17
.........
- 1 -
5.2.5 LCD Trouble ............................ 26
5.2.6 Charge Trouble ........................ 27
5.2.7 Vibrator is not working ............. 28
5.2.8 Backlight is not Working .......... 29
5.2.9 TX POWER Trouble(E-GSM) ..... 30
5.2.10 TX Power Trouble(DCS) ........ 32
5.2.11 RX Sensitivity
Trouble (E-GSM) ................... 34
5.2.12 Rx Sensitivity
Trouble(DCS) ......................... 37
6. PCB Diagram & Testpoint
Description .................................
7. Block Diagram
7.1 BB Block Diagram .......................... 45
7.2 RF Block Diagram ......................... 46
8. Schematic Diagram
8.1 Key Pad
(LCD Interface & Earphone) .......... 48
8.2 Main Board .................................... 48
8.2.1 Baseband(Ulysse & Omega) ... 49
8.2.2 Memory Devices ...................... 50
8.2.3 Audio & Peripheral Circuit ........ 51
8.2.4 I/O & B' to
B Connector Interface .............. 51
8.3 RF Top Schematic ......................... 52
8.3.1 RF Front End ........................... 52
8.3.2 RF Main ................................... 53
9. EXPLODED VIEW
10. Replacement Parts list
40
45
...........................
................ 47
..................... 55
....... 56