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Nokia RM-824 User Manual
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Figure 11 RF key components
Cellular RF main troubleshooting
Context
Always start the cellular RF related troubleshooting procedure by following the diagram below.
RM-824; RM-825; RM-826
Cellular RF troubleshooting
Issue 2
NOKIA INTERNAL USE ONLY
Page 4 – 7
Copyright © 2012 Nokia. All rights reserved.
100
102
Table of Contents
Table of Contents
15
Warnings and Cautions
4
Battery Information
9
Rm-824; Rm-825; Rm
14
Table of Contents
15
Product Selection
17
Product Features and Sales Package
18
Product and Module List
21
Mobile Enhancements
21
Table 2 Car
22
Technical Specifications
23
Transceiver General Specifications
23
Main RF Characteristics for GSM850/900/1800/1900, WCDMA VIII/V/II/I and LTE B1/B3/B7/B8/B20 Phones
23
Table 3 Data
23
Battery Endurance
26
Environmental Conditions
26
Issue 2 NOKIA INTERNAL USE ONLY Page
27
Table of Contents
31
Service Tools
33
Product Specific Tools
33
General Tools
33
Ca-158Rs
33
Ca-205Ps
34
Sx-4T
37
Service Concepts
37
POS (Point of Sale) Flash Concept
37
Concept for Flashing and Product Code Change
38
USB Flash Concept with MJ-305
39
MJ-305 and SS-293 RF Guiding Plate Assembly Instructions
40
Table 1 Audio/Table 4 Power
43
Table 1 Audio
43
Table 4 Power
43
Baseband Main Troubleshooting
45
Power and Charging Troubleshooting
48
A/D Converter Troubleshooting
48
Backup Battery Troubleshooting
49
General Power Checking Troubleshooting
50
Dead or Jammed Device Troubleshooting
51
Battery Current Troubleshooting
52
Clocking Troubleshooting
53
Wireless Charging Troubleshooting
54
USB Charging Troubleshooting
55
Interface Troubleshooting
56
USB Flashing Fault Troubleshooting
56
USB Data Interface Troubleshooting
57
SIM Interface Troubleshooting
58
Microsd Interface Troubleshooting
59
DRAM Troubleshooting
60
Emmc Troubleshooting
61
Display Module Troubleshooting
62
General Instructions for Display Troubleshooting
62
Introduction to Display Troubleshooting
63
Display Troubleshooting
64
Touch Panel Troubleshooting
65
Keys Troubleshooting
66
Keyboard Troubleshooting
66
Keyboard Backlight Troubleshooting
67
Sensors Troubleshooting
68
Accelerometer Troubleshooting
68
Magnetometer Troubleshooting
69
Alphamon Technical Description and Troubleshooting
70
Proximity Sensor and Ambient Light Sensor (ALS)
70
Proximity and als Troubleshooting
71
Gyroscope Troubleshooting
72
Audio Troubleshooting
73
Audio Troubleshooting Test Instructions
73
Test Procedure
73
External Earpiece Troubleshooting
74
External Microphone Troubleshooting
75
Internal Earpiece Troubleshooting
76
Internal Handsfree (IHF) Troubleshooting
77
Internal Microphone Troubleshooting
78
Vibra Troubleshooting
79
Connectivity Troubleshooting
80
Introduction to Connectivity Module Troubleshooting
80
Issue
80
Bluetooth and WLAN Troubleshooting
82
Introduction to Bluetooth and WLAN Troubleshooting
82
Bluetooth Troubleshooting
83
WLAN Troubleshooting
84
GPS Troubleshooting
84
Introduction to GPS Troubleshooting
84
GPS Troubleshooting
86
NFC Troubleshooting
87
Table of Contents
97
General Instructions for Cellular RF Troubleshooting
99
Cellular RF Key Components
100
Cellular RF Main Troubleshooting
101
Antenna
103
Antenna Overview
103
Antenna Troubleshooting
105
WLAN Antenna Troubleshooting
107
GPS Antenna Troubleshooting
108
NFC Antenna Troubleshooting
109
RF Testing
103
Table of Contents
113
Introduction to Camera Module Troubleshooting
115
The Effect of Image Taking Conditions on Image Quality
116
Phone Display
118
Image Quality Analysis
120
Possible Faults in Image Quality
120
Testing for Dust in Camera Module
121
Testing Camera Image Sharpness
122
Effects of Dirty or Defective Camera Lens Protection Window
123
Faulty Pixels in Images
124
Flash Photography Problems
125
Camera Troubleshooting Flowcharts
126
No Recognizable Viewfinder Image
126
Bad Image Quality Troubleshooting
127
Main Camera, Camera Flash and Front Camera Troubleshooting
127
Main Camera Troubleshooting
127
Camera Flash Troubleshooting
130
Front (Secondary) Camera Troubleshooting
132
Table of Contents
137
Introduction
139
Phone Description
139
System Module Block Diagram
142
Energy Management
143
Battery and Charging
143
Normal and Extreme Voltages
143
Power Key and System Power up
144
Modes of Operation
144
Power Distribution
145
Clock Scheme
146
Micro SIM Interface
146
Device Memory
148
WLAN/BT Interface
148
GNSS Interface
149
NFC Interface
149
Microusb
150
Microusb Interface and Charging
150
Microusb Connector
150
User Interface
151
Touch Module
151
Proximity Sensor and Ambient Light Sensor
151
Imaging and Video
151
Display Module
151
Cameras
152
Illumination
153
Keypad Interface
154
Accelerometer
154
Magnetometer
155
Gyroscope
155
Audio Concept
156
Audio HW Architecture
156
Internal Earpiece
157
Internal Handsfree (IHF) Speaker
158
Internal Microphones
158
External Earpiece and Microphone
159
Vibra
159
AHJ Connector
160
Cellular RF Technical Description
160
Frequency
161
GSM850 Frequencies
161
GSM900 Frequencies
161
GSM1800 Frequencies
162
GSM1900 Frequencies
162
WCDMA I (2100) Frequencies
162
WCDMA II (1900) Frequencies
162
WCDMA V (850) Frequencies
162
WCDMA VIII (900) Frequencies
163
LTE B1 Frequencies
163
LTE B3 Frequencies
163
LTE B7 Frequencies
163
LTE B8 Frequencies
163
Table of Contents
167
General Information
169
RM-824 Product Data
169
Product and Module List
169
Main RF Characteristics for GSM850/900/1800/1900, WCDMA VIII/V/IV/II/I and LTE B2/B4/B5/B17 Phones
170
Main RF Characteristics for GSM850/900/1800/1900, WCDMA VIII/V/II/I and LTE B4/B17
173
Service Tools and Service Concepts
175
BB Troubleshooting
177
PWB Markings in RM-824 and
177
RF Troubleshooting
178
Cellular RF Key Components
178
RF Tuning and Testing
179
System Module
179
Phone Description
179
Cellular RF Technical Description
180
Hac
181
WCDMA IV (1700/2100) Frequencies
181
LTE B2 Frequencies
181
LTE B4 Frequencies
181
LTE B5 Frequencies
182
LTE B17 Frequencies
182
Table of Contents
185
General Information
187
RM-826 Product Data
187
Product and Module List
187
Main RF Characteristics for GSM850/900/1800/1900 and WCDMA VIII/V/IV/II/I Phones
187
Service Tools and Service Concepts
189
BB Troubleshooting
191
PWB Markings in RM-826 and
191
RF Troubleshooting
192
Cellular RF Key Components
192
RF Tuning and Testing
193
System Module
193
Phone Description
193
Cellular RF Technical Description
194
WCDMA IV (1700/2100) Frequencies
195
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Nokia RM-824 Specifications
General
Brand
Nokia
Model
RM-824
Category
Cell Phone
Language
English
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