LG - MG295 - Mobile phone
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Equipment:
MG295
Date:
2007
Category:
Group:
Sub Group:
1 Manual
Service manual
Manual type:
Service manual
Pages:
145
Size:
4.4 MB
Language:
english
Revision:
1.0
Manual-ID:
Date:
October 2007
Quality:
Electronic document, no scan, very well readable.
Upload date:
Jan. 16, 2020
MD5:
e5d01df3-813d-8262-e49b-0952ec2ce1c0
Information
1. INTRODUCTION ...5
1.1 Purpose ... 5
1.2 Regulatory Information... 5
1.3 Abbreviations ... 7
2. PERFORMANCE...9
2.1 H/W Features...9
2.2 Technical Specification ...10
3. TECHNICAL BRIEF ...15
3.1 Power Amplifier (SKY77318, U502)...15
3.2 Transceiver (AD6548, U503) ...17
3.3 FEM for Triband(FL501) ...19
3.4 26 MHz Clock (Crystal, X501)...20
3.5 Baseband Processor (AD6721 , U103)..21
3.6 Display and Interface ...27
3.7 Camera Interface(AIT813G , U402)...29
3.8 Keypad Switches and Scanning ...31
3.9 Microphone ...32
3.10 Main Speaker...33
3.11 Headset Interface...34
3.12 Key Back-light Illumination...35
3.13 LCD Back-light Illumination...36
3.14 VIBRATOR...36
3.15 BLUETOOTH & FM Radio
(BCM2048, U600) ...37
3.16 Battery Charging ...38
4. TROUBLE SHOOTING ...39
4.1 RF Component...39
4.2 RX Trouble...40
4.3 TX Trouble ...45
4.4 Power On Trouble...51
4.5 Charging Trouble ...53
4.6 Vibrator Trouble ...55
4.7 LCD Trouble...57
4.8 Camera Trouble ...60
4.9 Speaker Trouble ...63
4.10 SIM Card Interface Trouble...65
4.11 Earphone Trouble ...67
4.12 KEY backlight Trouble ...69
4.13 Receiver Trouble...71
4.14 Microphone Trouble ...73
4.15 RTC Trouble ...75
4.16 Folder on/off Trouble...77
4.17 Micro SD Trouble ...79
4.18 Bluetooth & FM Radio Trouble...81
5. DOWNLOAD...84
5.1 Download ...84
6. CIRCUIT DIAGRAM ...91
7. BGA IC Pin Check ...101
8. PCB LAYOUT ...105
9. BLOCK DIAGRAM ...109
10. ENGINEERING MODE ...110
10.1 BB Test [MENU 1]...111
10.2 RF Test [MENU 2]...113
10.3 MF mode [MENU 3] ...113
10.4 Trace option [MENU 4] ...114
10.5 Call timer [MENU 5] ...114
10.6 Fact. Reset [MENU 6] ...114
10.7 S/W version...114
11. STAND ALONE TEST ...115
11.1 Introduction ...115
11.2 Setting Method...115
11.3 Means of Test ...116
12. AUTO CALIBRATION...118
12.1 Overview ...118
12.2 Equipment List ...118
12.3 Test Jig Operation...119
12.4 Procedure ...120
12.5 AGC ...122
12.6 APC...122
12.7 ADC ...122
13. EXPLODED VIEW &
REPLACEMENT PART LIST ... 123
13.1 Exploded View ... 123
13.2 Replacement Parts ...125
13.3 Accessory ... 144
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