LG KG271 Cell Phone Manuals

LG KG271 Cell Phone Manuals

Manuals and User Guides for LG KG271 Cell Phone. We have 2 LG KG271 Cell Phone manuals available for free PDF download: Service Manual

LG KG271 Service Manual

LG KG271 Service Manual (126 pages)

Brand: LG | Category: Cell Phone | Size: 2 MB

Table of Contents

Table of Contents
2
1 Introduction

4
- Purpose
  4
- Regulatory Information
  4
2 Performance

6
- H/W Features
  6
- S/W Features
  7
3 Technical Brief

13
- Digital Main Processor(PMB7880)
  13
- Power Management
  19
- Power Amplifier Module (SKY77318)
  21
- 26 Mhz Clock (DCXO)
  23
- Rtc(32.768Khz Crystal)
  24
- LCD Interface(3-Wire SPI Interface)
  25
- SIM Card Interface
  27
- KEYPAD Interface
  28
- Battery Charging Block Interface
  29
- RF Interface
  30
- Audio Interface
  32
- Key LED Interface
  36
- Vibrator Interface
  37
- Memory Interface
  38
- Power Block Interface
  39
- FM Radio Interface
  41
- Headphone Amplifier
  42
4 Trouble Shooting

43
- RF Trouble
  43
- TX Trouble
  49
- Power on Trouble
  53
- SIM Card Trouble
  55
- Vibrator Trouble
  57
- Keypad Trouble
  59
- RTC Trouble
  61
- Key Backlight Trouble
  63
- LCD Trouble
  65
- Microphone Trouble
  68
- Receiver Trouble
  70
- Speaker Trouble
  72
- Headphone Trouble
  74
- Charging Trouble
  76
- Battery Voltage
  76
- FM Radio Trouble
  78
5 Download

81
- Download Setup
  81
- Download Process
  82
6 Block Diagram

87
7 Circuit Diagram

88
8 Pcb Layout

92
9 Engineering Mode

94
- About Engineering Mode
  94
- Access Codes
  94
- Key Operation
  94
- Engineering Mode Menu Tree
  94
  - Bb Test
    96
  - Eng Mode
    98
  - Call Timer
    100
  - Mf Test
    102
10 Calibration

103
- Test Equipment Setup
  103
- Calibration Steps
  103
11 Stand Alone Test

108
- Test Program Setting
  108
- Tx Test
  110
- RX Test
  111
12 Exploded View & Replacement Part List

112
- Exploded View
  112
- Replacement Parts
  114
  - Mechanic Component
    114
  - Main Component
    116
- Accessory
  124

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LG KG271 Service Manual

LG KG271 Service Manual (125 pages)

Brand: LG | Category: Cell Phone | Size: 1.98 MB

Table of Contents

Table of Contents
2
1 Introduction

4
- Purpose
  4
- Regulatory Information
  4
2 Performance

6
- H/W Features
  6
- S/W Features
  7
3 Technical Brief

13
- Digital Main Processor(PMB7880)
  13
- Power Amplifier Module (SKY77318)
  21
- 26 Mhz Clock (DCXO)
  23
- Rtc(32.768Khz Crystal)
  24
- LCD Interface(3-Wire SPI Interface)
  25
- SIM Card Interface
  27
- KEYPAD Interface
  28
- Battery Charging Block Interface
  29
- RF Interface
  30
- Audio Interface
  32
- Key LED Interface
  36
- Vibrator Interface
  37
- Memory Interface
  38
- Power Block Interface
  39
- FM Radio Interface
  41
4 Trouble Shooting

43
- RF Trouble
  43
- TX Trouble
  49
- Power on Trouble
  53
- SIM Card Trouble
  55
- Vibrator Trouble
  57
- Keypad Trouble
  59
- RTC Trouble
  61
- Key Backlight Trouble
  63
- LCD Trouble
  65
- Microphone Trouble
  68
- Receiver Trouble
  70
- Speaker Trouble
  72
- Headphone Trouble
  74
- Charging Trouble
  76
- FM Radio Trouble
  78
- Circuit Diagram
  79
5 Download

81
- Download Setup
  81
- Download Process
  82
6 Block Diagram

87
7 Circuit Diagram

88
8 Pcb Layout

92
9 Engineering Mode

94
- About Engineering Mode
  94
- Access Codes
  94
- Key Operation
  94
- Engineering Mode Menu Tree
  94
  - Eng Mode
    97
  - Call Timer
    100
  - Factory Reset
    100
  - Mf Test
    101
10 Calibration

103
- Test Equipment Setup
  103
- Calibration Steps
  103
11 Stand Alone Test

108
- Test Program Setting
  108
- Tx Test
  110
- RX Test
  111
12 Exploded View & Replacement Part List

112
- Exploded View
  112
- Replacement Parts
  114
- Main Component
  115
- Accessory
  123

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