C702
1221-7857 rev. 1
ABOUT
AB
O
U
T
ABOUT
General information
The purpose of this document is to provide enhanced technical information for Sony Ericsson
repair technicians in order to assist during service, repair and troubleshooting operations on Sony
Ericsson mobile phones. It should be used as a complement to other repair instructions and tools
as notifi ed by the local Sony Ericsson representative.
To search for components throughout the entire document use the “search” function in Adobe
Acrobat Reader 7.0 (or later version) and enter the component name or other word. Use zoom to
enlarge.
For easier navigation of the document you can use the bookmarks that appear in the Bookmarks
tab on the left side of the Adobe Acrobat Reader window. Each bookmark jumps to a page in the
document.
Disclaimer
This document is Sony Ericsson confi dential and should be treated as confi dential in accordance
with the agreement with Sony Ericsson. This document is intended for use by authorized service
technicians only. Sony Ericsson is not to be held responsible for any damages or losses caused
intentionally or unintentionally due to unauthorised use of the information in this document.
Rev.
Date
Changes / Comments
1
10/31/2008
Initital revision.
Revision History
Contents
ABOUT 2
About 2
Contents 2
TROUBLESHOOTING 3
Equipment List
3
On/Off Problems
8
Flash Problems
8
Dead Phone Problems
9
Display Problems
10
Display Illumination Problems
11
Key Problems part 1
11
Key Problems part 2
12
LED Problems
12
Main & VGA Camera
13
Camera Door Sensor & Flash LED Problems 13
Vibrator Problems
14
Charging Problems
14
USB/VBUS Charging Problems
15
SIM Problems
16
Memory Stick Problems
16
Audio Internal Problems
17
Audio External Problems
17
FM Radio Problems
18
Bluetooth Problems
18
GSM Network Problems
19
WCDMA Network Problems
20
System Connector Protection Test
21
Current Consumption Test
21
Current Consumption Test
22
Battery and Current Calibration Test
23
Backup Capacitor Test
23
Charging Test
24
ASIC Revision Test
24
Reference Measurement Points
25
Measurement Points Pictures
26
MEASUREMENT POINTS
39
Front Side
39
Back Side
40
N1200 Thor Module
41
N1210 Squid Module
42
Top Schematic
43
Imaging Top
44
Imaging Display
45
Imaging Camera
46
Imaging LMU
47
Imaging Sensor
48
Access Top
49
Access GSM & UMTS
50
Access Bluetooth
51
Access AGPS
52
Application & System Performance
53
System Top
54
Clocks & Resets
55
System Memories
56
System PoP IF
57
Power Top
58
Regulators & Charging
59
Power Camera
60
Power ASICs
61
Power Memories
62
Connectivity Top
63
Connectivity ADC & I2C
64
Connectivity Cards
65
Connectivity 66
Connectivity Keypad
67
Audio Top
68
Audio Analog
69
Audio Digital
70
Audio FM Radio
71
Test 72
Thor RF Module - TOP
73
Thor RF Module - GSM/EDGE Tx + FEM
74
Thor RF Module - GSM/EDGE Rx + Synth
75
Squid RF Module - Radio Top
76
Squid RF Module - Radio Cont UMTS
77
Squid RF Module - Radio Duplex
78
Squid RF Module - Radio Top UMTS
79
Squid RF Module - Radio Receiver UMTS
80
Squid RF Module - Radio Synthesizer UMTS 81
Squid RF Module - Radio Power Amplifi er
82
COMPONENT OVERVIEW
83
Front Side
83
Back Side
84
FUNCTIONAL OVERVIEW
85
Technical Description
85
Block Diagrams
95
APPENDIX 97
Replaceable Parts
97
Components - B2101, B3100, D2105
98
Components - D2404, L2401-5, L2408
98
Components - N1200, N1210
99
Components - N1400, N1430
100
Components - N2205, N2402, N3100
101
Components - N1301, V2202, V2405
102
Components - V2420-21, S2502-4
102
Components - V2425, V3105-6, X1200
103
Components - X1201-3, X1301-2
103
Components - X1430-31
103
Components - X2200, X2300
104
Components - X2402, X2403
104
Components - X2490, X4201, X4202
105
Components - X4300
105
Components - X4301
106
Flash FPC Schematics
106
Keyboard FPC Schematics
106
Troubleshooting Software Documentation 107
Troubleshooting Fixture Setup Instructions 114
SEMC Troubleshooting Manual
2
(115)
Summary of Contents for C702
Page 116: ...www s manuals com ...
