Table Of Contents - LG CE500 Service Manual

1. Introduction ..................................... 5
1.1 Purpose................................................... 5
1.2 Regulatory Information............................ 5
2. General Performance...................... 7
2.1 H/W Feature............................................ 7
2.2 GPRS / EDGE Comparison .................... 7
2.3 Modulation and Coding Rates for EDGE 8
2.4 GSM Air Interface ................................... 8
2.5 EDGE Air Interface - Modulation............. 9
3. Technical Brief............................... 11
3.1 Baseband Part Technical Brief ............ 11
3.1.1 BaseBand Components
(Main Component Side).............. 12
3.1.2 BaseBand Components
(Main Keypad Side) .................... 13
3.1.3 BaseBand Components (FPCB). 14
3.1.4 Digital Baseband(DBB) Processor 15
3.1.5 Analog Main Processor (ABB) .... 16
3.1.6 Memory....................................... 17
3.1.7 Power Management Section....... 17
3.1.8 MIDI ........................................... 18
3.1.9 CE500 Battery Icon Display........ 19
3.1.10 CE500 Battery Icon Display...... 20
3.1.11 Charging ................................... 20
3.1.12 KEY Back-light Illumination....... 21
3.1.13 SIM ........................................... 22
3.1.14 Keypad...................................... 23
3.2. RF Part Technical Brief ....................... 24
3.2.1 The Block Diagram of the RF Part 24
3.2.2 RF Part Components .................. 25
3.2.3 Tx / Rx Part Description.............. 26
3.2.4 Receiver Part Description ........... 29
3.2.5 Transmitter Part Description ....... 33
4. Troubleshooting............................ 36
4.1 Power On Trouble................................. 36
4.2 Charging Trouble .................................. 38
4.3 LCD Display Trouble............................. 40
4.4 Receiver Trouble................................... 42
4.5 Speaker Trouble ................................... 44

Table of Contents

5. DOWNLOAD .................................. 79
6. BLOCK DIAGRAM ......................... 85
7. Circuit Diagram ............................. 87
8. pcb layout ..................................... 94
9. Calibration ..................................... 97
10. EXPLODED VIEW &
- 3 -
4.6 Microphone Trouble .............................. 46
4.7 Vibrator Trouble .................................... 48
4.8 Keypad Backlight Trouble (Main PCB) .. 50
4.9 Charging Indicator & MOD Key
Backlight Trouble .................................. 52
4.10 SIM Detect Trouble ............................. 54
4.11 Earphone Trouble ............................... 56
4.12 Transflash Trouble .............................. 60
4.13 RTC Trouble ....................................... 62
4.14 Camera Trouble .................................. 63
4.15 Camera Flash Trouble ........................ 65
4.16 RX Part Trouble Shooting ................... 67
4.17 TX Part Trouble Shooting .................. 75
A. What is Calibration? ........................ 97
B. Calibration program .........................98
C. AGC ................................................ 99
D. APC................................................. 99
E. ADC................................................. 99
F. Setting ............................................. 99
G. Calibration Equipment Setup ........ 100
H. What is Standalone Test? ............. 101
I. Standalone Test Setup ................... 101
J. Tx Standalone Test........................ 102
K. Rx Standalone Test ...................... 103
L. Standalone Test Equipment Setup 104
REPLACEMENT PART LIST .... 105
10.1 EXPLODED VIEW ............................ 105
10.2 Replacement Parts
<Mechanic component>.................... 107
<Main component> ........................... 110
10.3 Accessory ......................................... 127