Table Of Contents - LG KP150Q Service Manual

1. Introduction ..................................... 7
1.1 Purpose................................................... 7
1.2. Regulatory Information........................... 7
1.3 Abbreviations .......................................... 9
2. General Performance.................... 10
2.1 Product Name ....................................... 10
2.2 Supporting Standard ............................. 10
2.3 Main Parts: GSM Solution..................... 10
2.4 HW Feature........................................... 11
2.5 S/W Features .........................................13
3. HW Circuit Description................. 16
3.1 Digital Main Processor (Locosto) .......... 16
3.2 Power Amplifier Module (SKY77318) ... 22
3.3 26 MHz Clock (DCXO).......................... 23
3.4 RTC(32.768KHz Crystal) ...................... 24
3.5 LCD Interface(8-bit Parallel interface)... 25
3.6 SIM Card Interface.................................26
3.7 KEYPAD Interface .................................27
3.8 Battery Charging Block Interface ...........28
3.9 RF Interface ...........................................29
3.10 Audio Interface.....................................31
3.11 Key LED Interface................................34
3.12 Vibrator Interface .................................35
3.13 Memory Interface .................................36
3.14 Power Block Interface ..........................37
3.15 FM RADIO INTERFACE ......................39
3.16 Camera INTERFACE...........................41
4. TROUBLE SHOOTING .................. 42
4.1 Trouble Test Set-up ...............................42
4.2 RF Part Component ...............................43
4.3 RX Receiver Part ...................................46
4.4 TX Transmitter Part................................49
4.5 Power On Trouble..................................54
4.6 Charging Trouble ...................................56
4.7 RTC Trouble ..........................................58
4.8 LCD Trouble...........................................59
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

Table of Contents

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4.9 Speaker & Receiver Trouble..................61
4.10 Headphone Trouble .............................64
4.11 Microphone Trouble .............................66
4.12 SIM Card Trouble.................................68
4.13 KEY backlight Trouble .........................70
4.14 Vibrator Trouble ...................................72
4.15 FM RADIO Trouble ..............................74
4.16 Camera Trouble ...................................76
5. DOWNLOAD .................................. 78
5.1 Download Setup.................................... 78
5.2 Download Procedure ............................ 79
6. BLOCK DIAGRAM ......................... 86
7. CIRCUIT DIAGRAM ....................... 87
8. BGA IC Pin Check ..........................93
9. PCB LAYOUT ................................. 97
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10. Calibration
10.1 What's the Rx Calibration? .............. 101
10. 2 What's the Tx Calibration? ............. 101
10.3 Calibration program-HOT_KIMCHI ..102
10.4 Calibration Setting ............................103
10.5 Calibration Steps ..............................103
11. EXPLODED VIEW &
REPLACEMENT PART LIST ..... 109
12.1 EXPLODED VIEW ............................ 109
12.2 Replacement Parts
<Mechanic component>.................... 111
<Main component> ............................114
12.3 Accessory ..........................................127
101
LGE Internal Use Only