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LG KE990c Mobile phone
Manufacturer:
Model:
KE990c
Date:
2008
Class:
Type:
SubType:
Service Manual
Manual type:
Service Manual
Pages:
204
Size:
11.59 Mbytes (12151389 Bytes)
Language:
english
Revision:
1.0
Manual-ID:
Date:
01 April 2008
Quality:
Electronic document, no scan, very well readable.
Upload date:
15 January 2020
MD5:
b60ba53a1451ac281c871fb5e368bc16
Downloads:
1117

Information

1. INTRODUCTION ... 5 1.1 Purpose ... 5 1.2 Regulatory Information ... 5 2. PERFORMANCE ... 7 2.1 Supporting Standard ... 7 2.2 Main Parts : Solution ... 7 2.3 HW Features ... 8 2.4 HW SPEC. ... 10 3. TECHNICAL BRIEF ... 15 3.1 General Description ... 15 3.2 GSM Mode ... 20 3.4 Off-chip RF Components ... 21 3.5 Digital Baseband (DBB/ESM6270) ... 28 3.6 Subsystem(ESM6270) ... 31 3.7 Power Block ... 38 3.8 External memory interface ... 43 3.9 H/W Sub System ... 45 3.10 Feature List ... 61 3.11 Multimedia Chip Interface ... 67 3.12 Touch Screen Interface ... 73 3.13 Main Features ... 74 3.14 Main Component ... 75 4. TROUBLE SHOOTING ... 81 4.1 RF Component ... 81 4.2 Main Component ... 82 4.3 Checking VCTCXO Block ... 83 4.4 Checking Front-End Module Block ... 85 4.5 Checking GSM Block ... 88 4.6 Power on trouble ... 94 4.7 SIM detect trouble ... 99 4.8 Key sense trouble (KEYPAD) ... 100 4.9 Keypad backlight trouble ... 102 4.10 Micro SD trouble ... 104 4.11 Audio trouble ... 105 4.12 Camera trouble ... 118 4.13 Main LCD trouble ... 121 4.14 Bluetooth trouble ... 124 4.15 Touch Screen trouble ... 126 5. DOWNLOAD ... 127 5.1 Introduction ... 127 5.2 Downloading Procedure ... 127 5.3 Troubleshooting Download Errors ... 142 5.4 Caution ... 147 6. BLOCK DIAGRAM ... 148 6.1 GSM RF Block ... 148 6.2 Interface Diagram ... 150 7. Circuit Diagram ... 153 8. BGM Pin Map ... 163 9. PCB LAYOUT ... 169 10. Calibration & RF Auto Test Program (Hot Kimchi) ... 173 10.1 Usage of Hot-Kimchi ... 173 11. EXPLODED VIEW & REPLACEMENT PART LIST ... 177 11.1 EXPLODED VIEW ... 177 11.2 Replacement Parts <Mechanic component> ... 179 <Main component> ... 183 11.3 Accessory ... 203

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