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RM-825
Service manual
Nokia RM-825 Service Manual
Nokia lumina 820; nokia lumina l3; nokia lumina l4
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Warnings and Cautions
Battery Information
Rm-824; Rm-825; Rm
Table of Contents
Product Selection
Product Features and Sales Package
Product and Module List
Mobile Enhancements
Table 2 Car
Technical Specifications
Transceiver General Specifications
Main RF Characteristics for GSM850/900/1800/1900, WCDMA VIII/V/II/I and LTE B1/B3/B7/B8/B20 Phones
Table 3 Data
Battery Endurance
Environmental Conditions
Issue 2 NOKIA INTERNAL USE ONLY Page
Table of Contents
Service Tools
Product Specific Tools
General Tools
Ca-158Rs
Ca-205Ps
Sx-4T
Service Concepts
POS (Point of Sale) Flash Concept
Concept for Flashing and Product Code Change
USB Flash Concept with MJ-305
MJ-305 and SS-293 RF Guiding Plate Assembly Instructions
Table 1 Audio/Table 4 Power
Table 1 Audio
Table 4 Power
Baseband Main Troubleshooting
Power and Charging Troubleshooting
A/D Converter Troubleshooting
Backup Battery Troubleshooting
General Power Checking Troubleshooting
Dead or Jammed Device Troubleshooting
Battery Current Troubleshooting
Clocking Troubleshooting
Wireless Charging Troubleshooting
USB Charging Troubleshooting
Interface Troubleshooting
USB Flashing Fault Troubleshooting
USB Data Interface Troubleshooting
SIM Interface Troubleshooting
Microsd Interface Troubleshooting
DRAM Troubleshooting
Emmc Troubleshooting
Display Module Troubleshooting
General Instructions for Display Troubleshooting
Introduction to Display Troubleshooting
Display Troubleshooting
Touch Panel Troubleshooting
Keys Troubleshooting
Keyboard Troubleshooting
Keyboard Backlight Troubleshooting
Sensors Troubleshooting
Accelerometer Troubleshooting
Magnetometer Troubleshooting
Alphamon Technical Description and Troubleshooting
Proximity Sensor and Ambient Light Sensor (ALS)
Proximity and als Troubleshooting
Gyroscope Troubleshooting
Audio Troubleshooting
Audio Troubleshooting Test Instructions
Test Procedure
External Earpiece Troubleshooting
External Microphone Troubleshooting
Internal Earpiece Troubleshooting
Internal Handsfree (IHF) Troubleshooting
Internal Microphone Troubleshooting
Vibra Troubleshooting
Connectivity Troubleshooting
Introduction to Connectivity Module Troubleshooting
Issue
Bluetooth and WLAN Troubleshooting
Introduction to Bluetooth and WLAN Troubleshooting
Bluetooth Troubleshooting
WLAN Troubleshooting
GPS Troubleshooting
Introduction to GPS Troubleshooting
GPS Troubleshooting
NFC Troubleshooting
Table of Contents
General Instructions for Cellular RF Troubleshooting
Cellular RF Key Components
Cellular RF Main Troubleshooting
Antenna
Antenna Overview
Antenna Troubleshooting
WLAN Antenna Troubleshooting
GPS Antenna Troubleshooting
NFC Antenna Troubleshooting
RF Testing
Table of Contents
Introduction to Camera Module Troubleshooting
The Effect of Image Taking Conditions on Image Quality
Phone Display
Image Quality Analysis
Possible Faults in Image Quality
Testing for Dust in Camera Module
Testing Camera Image Sharpness
Effects of Dirty or Defective Camera Lens Protection Window
Faulty Pixels in Images
Flash Photography Problems
Camera Troubleshooting Flowcharts
No Recognizable Viewfinder Image
Bad Image Quality Troubleshooting
Main Camera, Camera Flash and Front Camera Troubleshooting
Main Camera Troubleshooting
Camera Flash Troubleshooting
Front (Secondary) Camera Troubleshooting
Table of Contents
Introduction
Phone Description
System Module Block Diagram
Energy Management
Battery and Charging
Normal and Extreme Voltages
Power Key and System Power up
Modes of Operation
Power Distribution
Clock Scheme
Micro SIM Interface
Device Memory
WLAN/BT Interface
GNSS Interface
NFC Interface
Microusb
Microusb Interface and Charging
Microusb Connector
User Interface
Touch Module
Proximity Sensor and Ambient Light Sensor
Imaging and Video
Display Module
Cameras
Illumination
Keypad Interface
Accelerometer
Magnetometer
Gyroscope
Audio Concept
Audio HW Architecture
Internal Earpiece
Internal Handsfree (IHF) Speaker
Internal Microphones
External Earpiece and Microphone
Vibra
AHJ Connector
Cellular RF Technical Description
Frequency
GSM850 Frequencies
GSM900 Frequencies
GSM1800 Frequencies
GSM1900 Frequencies
WCDMA I (2100) Frequencies
WCDMA II (1900) Frequencies
WCDMA V (850) Frequencies
WCDMA VIII (900) Frequencies
LTE B1 Frequencies
LTE B3 Frequencies
LTE B7 Frequencies
LTE B8 Frequencies
Table of Contents
General Information
RM-824 Product Data
Product and Module List
Main RF Characteristics for GSM850/900/1800/1900, WCDMA VIII/V/IV/II/I and LTE B2/B4/B5/B17 Phones
Main RF Characteristics for GSM850/900/1800/1900, WCDMA VIII/V/II/I and LTE B4/B17
Service Tools and Service Concepts
BB Troubleshooting
PWB Markings in RM-824 and
RF Troubleshooting
Cellular RF Key Components
RF Tuning and Testing
System Module
Phone Description
Cellular RF Technical Description
Hac
WCDMA IV (1700/2100) Frequencies
LTE B2 Frequencies
LTE B4 Frequencies
LTE B5 Frequencies
LTE B17 Frequencies
Table of Contents
General Information
RM-826 Product Data
Product and Module List
Main RF Characteristics for GSM850/900/1800/1900 and WCDMA VIII/V/IV/II/I Phones
Service Tools and Service Concepts
BB Troubleshooting
PWB Markings in RM-826 and
RF Troubleshooting
Cellular RF Key Components
RF Tuning and Testing
System Module
Phone Description
Cellular RF Technical Description
WCDMA IV (1700/2100) Frequencies
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Rm-824; Rm-825; Rm
Download this manual
Nokia Customer Care
Service Manual
RM-824; RM-825; RM-826 (Nokia Lumia 820;
L3&4)
Mobile Terminal
Part No: (Issue 2)
NOKIA INTERNAL USE ONLY
Copyright © 2012 Nokia. All rights reserved.
Table of
Contents
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Chapters
Table of Contents
15
Table of Contents
31
Table 1 Audio/Table 4 Power
43
Table of Contents
97
Table of Contents
113
Table of Contents
137
Table of Contents
167
Table of Contents
185
Table of Contents
Troubleshooting
Baseband main troubleshooting
45
Power and charging 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 data interface troubleshooting
57
SIM interface troubleshooting
58
MicroSD interface troubleshooting
59
DRAM troubleshooting
60
eMMC troubleshooting
61
Display module troubleshooting
62
Introduction to display troubleshooting
63
Display troubleshooting
64
Touch panel troubleshooting
65
Keys troubleshooting
66
Keyboard backlight troubleshooting
67
Sensors troubleshooting
68
Magnetometer troubleshooting
69
Alphamon technical description and troubleshooting
70
Proximity and ALS troubleshooting
71
Gyroscope troubleshooting
72
Audio troubleshooting
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
Bluetooth and WLAN troubleshooting
82
Bluetooth troubleshooting
83
WLAN troubleshooting
84
GPS troubleshooting
86
NFC troubleshooting
87
General instructions for cellular RF troubleshooting
99
Cellular RF main troubleshooting
101
Antenna troubleshooting
105
WLAN antenna troubleshooting
107
GPS antenna troubleshooting
108
NFC antenna troubleshooting
109
Introduction to camera module troubleshooting
115
Camera troubleshooting flowcharts
126
Bad image quality troubleshooting
127
Camera flash troubleshooting
130
Front (secondary) camera troubleshooting
132
BB troubleshooting
177
RF troubleshooting
178
BB troubleshooting
191
RF troubleshooting
192
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