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ABOUT TROUBLESHOOTING MEASUREMENT POINTS COMPONENT OVERVIEW FUNCTIONAL OVERVIEW APPENDIX
SEMC Troubleshooting Manual
K850
1 (101)
Troubleshooting Manual
1203-2528 rev. 1
K850
ABOUT Contents SEMC Troubleshooting Manual
K850
ABOUT ABOUT 2 Access Top 44
Contents 2 Access - GSM & UMTS 45
General information Access - Bluetooth 46
ABOUT
TROUBLESHOOTING 3 Imaging Top 47
Equipment List 3 Imaging Display 48
The purpose of this document is to provide enhanced technical information for Sony Ericsson On/Off Problems 8 Imaging Camera 49
repair technicians in order to assist during service, repair and troubleshooting operations on Sony Flash Problems 8 Imaging LMU 50
Ericsson mobile phones. It should be used as a complement to other repair instructions and tools Dead Phone Problems 9 Audio Top 51
as notified by the local Sony Ericsson representative. Display Problems 9 Audio Analog 52
To search for components throughout the entire document use the "search" function in Adobe Display Illumination Problems 10 Audio Digital 53
Acrobat Reader 7.0 (or later version) and enter the component name or other word. Use zoom to Key Problems 10 FM Radio 54
enlarge. LED Problems 11 Test 55
Main Camera Problems 11 Thor RF Module Top 56
For easier navigation of the document you can use the bookmarks that appear in the Bookmarks
VGA Camera Problems 12 Thor RF Module GSM/EDGE Tx + FEM 57
tab on the left side of the Adobe Acrobat Reader window. Each bookmark jumps to a page in the
Camera Door Problems 12 Thor RF Module GSM/EDGE Rx + Synth 58
document. Vibrator Problems 13
Charging Problems 13 COMPONENT OVERVIEW 59
USB/VBUS Charging Problems 14 Front Side B - X 59
SIM Problems 14 Back Side C - E 60
Disclaimer Memory Stick Problems 15 Back Side L - Z 61
This document is Sony Ericsson confidential and should be treated as confidential in accordance Audio Internal Problems 15
with the agreement with Sony Ericsson. This document is intended for use by authorized service Audio External Problems 16 FUNCTIONAL OVERVIEW 62
technicians only. Sony Ericsson is not to be held responsible for any damages or losses caused FM Radio Problems 16 Technical Description 62
intentionally or unintentionally due to unauthorised use of the information in this document. Bluetooth Problems 17 Block Diagram Access 71
GSM Network Problems 18 Block Diagram Application 72
WCDMA Network Problems 18 Power Distribution & Clocking Concept 73
Xenon Flash Problems 19
System Connector Protection Test 20 APPENDIX 74
Current Comsumption Test 20 Replaceable Parts 74
Battery & Current Calibration Test 22 Components B2101 - D2000 75
Backup Capacitor Test 22 Components D2010 - D2105 - D2404 76
Test Charging 23 Components D2420 - D2460 77
ASIC Revision Test 23 Components L2200 - L2401-04 - N1200 78
Reference Measurement Points 24 Components N1210 - N1400 79
Components N2000 - N2201 80
TEST POINTS 25 Components N2202 - N2203 81
Front Side 25 Components N2205 - N2208 82
Back Side 26 Components N2400 - N2402 - N2500 83
SIM & Memory Card Holder 27 Components N2525 - N3100 - N3101 84
Sofia Top Schematic 28 Components N4101 - N4200 85
Application & System Performance Top 29 Components S2400 - S2402 - S2403 86
System Top 30 Components V2202 - V2402 - V2405 86
System Control - Clocks & Resets 31 Components V2420-21 - V2425 - V2428 87
System Memories 32 Components V2477-78 - V2500 87
Power Top 33 Components X1200 - X1201-03 - X2200 88
Revision History Power Regulators & Charging 34 Components X2409 - X4300 - X2410 89
Power Camera 35 Components X2511 - X3105 89
Rev. Date Changes / Comments Power ASICs 36 Components X4301 90
Power Memories 37 Camera Module 5 MPixel 90
1 2/14/2008 Initital revision.
Connectivity Top 38 VGA Camera 90
Connectivity ADC & I2C 39 Xenon Flash Assembly 91
Connectivity Cards 40 Display 91
Connectivity Connectivity 41 Keyboard Schematics 92
Connectivity Keypad 42 Troubleshooting Software Documentation 93
Connectivity Camera Door & Flash 43 Troubleshooting Fixture Setup Guide 100
1203-2528 rev. 1 2 (101)
TROUBLESHOOTING Equipment List SEMC Troubleshooting Manual
K850
K850 Equipment List Digital Multimeter (DMM)
Fluke 83 or similar
Note: More additional information about the equipment used for TRS can be found in Repair Location: CSPN-Repair Instructions-Level: Mechanical-Tool Catalogue
Tools Catalogue on CSPN or on the following location: CSPN