advertisement
3. TECHNICAL BRIEF
3.16 BOM difference
Part Block
Baseband
I/O
FM
Radio
MG370b, MG370b, KG370
L200~202 : ELCH0005009 (100nH)
L204 : ELCH0010302 (100nH)
R294~295 : ECZH0000826 (27pF)
R296 : ELCH0005009 (100nH)
R297~299 : ECZH0000826 (27pF)
C301: ECZH0000813
C302: ECZH0001216
C303: ECZH0001216
C304: ECCH0004904
C305: ECCH0000182
C306: ECCH0004904
C307: ECCH0004904
C308: ECCH0000182
C309: ECCH0000182
C310: ECCH0004904
C311: ECCH0000182
R300: ERHZ0000476
R301: ERHZ0000438
R302: ERHZ0000438
R303: ERHZ0000476
R304: ERHZ0000405
R305: ERHZ0000406
R306: ERHZ0000485
R307: ERHZ0000485
R308: ERHZ0000406
R309: ERHZ0000406
R310 : ERHZ0000454 (27 K Ω )
R311,R312 : N.A (0 Ω pad, Open)
U300: EUSY0320801
U301: EUSY0142501
U302: EUSY0223002
U303: EUSY0300101
KG375
L200~202 : N.A
L204: ERHZ0000701 (0 Ω )
R294: ERHZ0000483 (47 Ω )
R295~299 : N.A
C300~311 : N.A
R300~309 : N.A
R310: ERHY0003601 (2.7K
Ω )
R311,R312 : N.A (0 Ω pad,Short)
U300~303 : N.A
Part
RF
Block
Tx , Rx matching
MG370b, KG370, KG375
FL400 : SFSB0001401
C418 : ECZH0000822 (1.5pF)
L401 : ELCH0004709 (3.3nH)
C412 : ECZH0000822 (1.5pF)
L404 : ELCH0009104 (6.8nH)
Antenna matching
C410 : ELCH0004723 (1.8nH)
L403 : ECZH0000813 (100pF)
L400 : ELCH0001031 (15nH)
MG370a
FL400 : SFSB0001301
C418 : ECCH0000901 (2.2pF)
L401 : ELCH0004704 (1.5nH)
C412 : ECCH0000183 (1.8pF)
L404 : ELCH0009110 (5.1nH)
C410 : ECZH0000813 (100pF)
L403 : ELCH0004726 (1.5nH)
L400 : ELCH0004711 (22nH)
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 43 LGE Internal Use Only
advertisement
Related manuals
advertisement
Table of contents
- 6 1. INTRODUCTION
- 6 1.1 Purpose
- 6 1.2 Regulatory Information
- 8 1.3 ABBREVIATION
- 10 2. PERFORMANCE
- 10 2.1 Product Name
- 10 2.2 Supporting Standard
- 10 2.3 Main Parts: GSM Solution
- 11 2.4 H/W Features
- 15 3. TECHNICAL BRIEF
- 15 3.1 Digital Main Processor(PMB7880)
- 23 3.2 Power Amplifier Module (SKY77318)
- 25 3.3 26 MHz Clock (DCXO)
- 26 3.4 RTC(32.768KHz Crystal)
- 27 3.5 LCD Interface(3-wire SPI interface)
- 29 3.6 SIM Card Interface
- 30 3.7 KEYPAD Interface
- 31 3.8 Battery Charging Block Interface
- 32 3.9 RF Interface
- 34 3.10 Audio Interface
- 38 3.11 Key LED Interface
- 39 3.12 Vibrator Interface
- 40 3.13 Memory Interface
- 41 3.14 Power Block Interface
- 43 Function difference
- 44 3.16 BOM difference
- 45 4. TROUBLE SHOOTING
- 45 4.1 Trouble Test Set-up
- 46 4.2 Power On Trouble
- 48 4.3 Charging Trouble
- 50 4.4 Vibrator Trouble
- 52 4.5 SIM Card Trouble
- 54 4.6 KEY backlight Trouble
- 55 4.7 RTC Trouble
- 56 4.8 LCD Trouble
- 58 4.9 Speaker Trouble
- 60 4.10 Receiver Trouble
- 61 4.11 Headphone Trouble
- 63 4.12 Microphone Trouble
- 64 4.13 RF Components
- 65 4.14 RX Receiver Part
- 68 4.15 TX Transmitter Part
- 72 5. DOWNLOAD
- 72 5.1 Download Setup
- 73 5.2 Download Process
- 78 6. BLOCK DIAGRAM
- 80 7. CIRCUIT DIAGRAM
- 84 8. BGA IC Pin Check
- 86 9. PCB LAYOUT
- 88 10. Calibration
- 88 10.1 Calibration Steps
- 93 11. Stand-alone Test
- 93 11.1 Test Program Setting
- 95 11.2 Tx Test
- 96 11.3 Rx Test
- 98 REPLACEMENT PART LIST
- 98 12.1 Exploded View
- 100 12.2 Replacement Parts
- 112 12.3 Accessory