Nokia RM-824 Service Manual

Nokia lumina 820; nokia lumina l3; nokia lumina l4

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Table of Contents

Quick Links

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

Table of Contents

Chapters

Table of Contents

Troubleshooting

Need help?

Do you have a question about the RM-824 and is the answer not in the manual?

Questions and answers

Summary of Contents for Nokia RM-824

Page 2 Guide chapter. Service information Chapter 8, titled differences between RM-826 and RM-824 , has been added to the manual. The new chapter describes the key hardware differences between the RM-826 and RM-824 variants of the Nokia Lumia 820.
Page 3 Nokia operates a policy of continuous development. Nokia reserves the right to make changes and improvements to any of the products described in this document without prior notice. Under no circumstances shall Nokia be responsible for any loss of data or income or any special, incidental, consequential or indirect damages howsoever caused.
Page 4: Warnings And Cautions
WCDMA networks and cause problems to 3G cellular phone communication in a wide area. • During testing never activate the GSM or WCDMA transmitter without a proper antenna load, otherwise GSM or WCDMA PA may be damaged. Page iv NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 5 Use only approved accessories and batteries. Do not connect incompatible products. CONNECTING TO OTHER DEVICES When connecting to any other device, read its user’s guide for detailed safety instructions. Do not connect incompatible products. Issue 2 NOKIA INTERNAL USE ONLY Page v Copyright © 2012 Nokia. All rights reserved.
Page 6 RM-824; RM-825; RM-826 ESD protection ESD protection Nokia requires that service points have sufficient ESD protection (against static electricity) when servicing the phone. Any product of which the covers are removed must be handled with ESD protection. The SIM card can be replaced without ESD protection if the product is otherwise ready for use.
Page 8 Our policy is of continuous development; details of all technical modifications will be included with service bulletins. While every endeavour has been made to ensure the accuracy of this document, some errors may exist. If any errors are found by the reader, NOKIA MOBILE PHONES Business Group should be notified in writing/e- mail. Please state: •...
Page 9: Battery Information
Batteries' performance is particularly limited in temperatures well below freezing. Do not dispose of batteries in a fire! Dispose of batteries according to local regulations (e.g. recycling). Do not dispose as household waste. Issue 2 NOKIA INTERNAL USE ONLY Page ix Copyright © 2012 Nokia. All rights reserved.
Page 11 2 Service Tools and Service Concepts 3 BB Troubleshooting Guide 4 Cellular RF troubleshooting 5 Camera Module Troubleshooting 6 System Module 7 Service information differences between RM-824 and RM-825 8 Service information differences between RM-826 and RM-824 Glossary Issue 2 NOKIA INTERNAL USE ONLY Page xi Copyright ©...
Page 12 RM-824; RM-825; RM-826 Nokia Lumia 820; L3&4 Service Manual Structure (This page left intentionally blank.) Page xii NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 15: Table Of Contents
Table 2 Car................................1–10 Table 3 Data ................................ 1–11 Table 4 Power ..............................1–11 List of Figures Figure 1 View of RM-825............................1–5 Issue 2 NOKIA INTERNAL USE ONLY Page 1 – 3 Copyright © 2012 Nokia. All rights reserved.
Page 17: Product Selection
The device uses Windows Phone 8 operating system (release 8, Apollo) and supports the full Web Browser for Internet Explorer 10 with desktop rendering which brings desktop-like Web browsing experience to mobile devices. Figure 1 View of RM-825 Issue 2 NOKIA INTERNAL USE ONLY Page 1 – 5 Copyright © 2012 Nokia. All rights reserved.
Page 18: Product Features And Sales Package
• Exposure compensation: +2 ~ -2EV at 0.5 step • White balance: automatic, sunny, cloudy, incandescent, fluorescent • Scene: automatic, sports, portrait, close-up, landscape, night • Zoom (digital): up to 3x Page 1 – 6 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 19 Messaging: • E-mail (SMTP, IMAP4, POP3), MMS, SMS, unified editor Office applications: • Viewing of email attachments – .doc, .xls, .ppt, .pdf, .zip Issue 2 NOKIA INTERNAL USE ONLY Page 1 – 7 Copyright © 2012 Nokia. All rights reserved.
Page 20 • Music headset (WH-209) • Connectivity cable (CA-190CD) • Micro SIM card • SIM door key • Booklet (including quick guide and legal information) Page 1 – 8 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 21: Product And Module List
Wireless music receiver MD-20W Mini speakers MD-50W Hearing aids LPS-5 Wired headsets WH-102 WH-103 WH-108 WH-205 WH-206 WH-207 WH-208 WH-209 WH-701 WH-702 WH-902 WH-920 WH-930 Issue 2 NOKIA INTERNAL USE ONLY Page 1 – 9 Copyright © 2012 Nokia. All rights reserved.
Page 22: Table 2 Car
Nokia Universal Mobile Holder CR-114 CR-115 CR-123 Wireless plug-in car handsfree HF-210 Car kit CK-100 CK-200 Display car kit CK-600 Mobile charger DC-11K DC-11K-B DC-16 DC-20 Page 1 – 10 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 23: Technical Specifications
(850), WCDMA II (1900), WCDMA I (2100), LTE B1 (2100), LTE B3 (1800), LTE B7 (2600), LTE B8 (900) and LTE B20 (800) Issue 2 NOKIA INTERNAL USE ONLY Page 1 – 11 Copyright © 2012 Nokia. All rights reserved.
Page 24 LTE B3 (1800): 1710 - 1785 MHz LTE B7 (2600): 2500 - 2570 MHz LTE B8 (900): 880 - 915 MHz LTE B20 (800): 832 - 862 MHz Page 1 – 12 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 25 LTE B7 (2600): 700 LTE B8 (900): 350 LTE B20 (800): 300 Channel spacing 200 kHz (WCDMA II and V 100/200 kHz, and LTE 100 kHz) Issue 2 NOKIA INTERNAL USE ONLY Page 1 – 13 Copyright © 2012 Nokia. All rights reserved.
Page 26: Battery Endurance
No storage or operation: an <-40 C...>+85 attempt may damage the phone. Charging allowed BTemp measurement range for C...+60 charging. Long term storage conditions C...+85 Page 1 – 14 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 27: Issue 2 Nokia Internal Use Only Page
The standard for electrostatic discharge is IEC 61000-4-2, and this device fulfils level 4 requirements. RoHS This device uses RoHS compliant components and lead-free soldering process. Issue 2 NOKIA INTERNAL USE ONLY Page 1 – 15 Copyright © 2012 Nokia. All rights reserved.
Page 31: Table Of Contents
2–9 Figure 3 BE concept for flashing, certificate restore and product code change .......... 2–10 Figure 4 USB flash concept with MJ-305......................2–11 Issue 2 NOKIA INTERNAL USE ONLY Page 2 – 3 Copyright © 2012 Nokia. All rights reserved.
Page 33: Service Tools
The table below gives a short overview of service devices that can be used for testing, error analysis, and repair of product RM-824; RM-825; RM-826. For the correct use of the service devices, and the best effort of workbench setup, please refer to various concepts.
Page 34: Ca-205Ps
Service Tools and Service Concepts CA-205PS Power cable 0730487 The CA-205PS power cable is used with MJ-305 module jig to supply a controlled voltage. Page 2 – 6 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 35 LTE B7 2655.0 -0.4 2535.0 -0.4 WCDMA VIII / LTE B8 942.6 -0.2 897.6 -0.2 LTE B20 806.0 -0.2 847.0 -0.2 WLAN 2442.0 -0.4 Issue 2 NOKIA INTERNAL USE ONLY Page 2 – 7 Copyright © 2012 Nokia. All rights reserved.
Page 36 SRT-6 Opening tool 0770431 SRT-6 is used to open phone covers. Note: The STR-6 is included in the Nokia Standard Toolkit. SS-210 Camera removal tool 0781189 The camera removal tool SS-210 is used to remove/attach the camera module from/to the socket.
Page 37: Sx-4T
• LTE B7: 0.6+-0.1dB • LTE B8/20: 0.3+-0.1dB • BT/WLAN: 0.5+-0.1dB Service concepts POS (Point of Sale) flash concept Figure 2 POS flash concept Issue 2 NOKIA INTERNAL USE ONLY Page 2 – 9 Copyright © 2012 Nokia. All rights reserved.
Page 38: Concept For Flashing And Product Code Change
Figure 3 BE concept for flashing, certificate restore and product code change Type Description Product specific devices BP-5T Battery Other devices SX-4T Smart card PC with service software Smart card reader Cables Page 2 – 10 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 39: Usb Flash Concept With Mj-305
RF guiding plate Other tools SX-4T Smart card PC with service software Smart card reader Cables CA-101 Micro USB cable PCS-1 Power cable Issue 2 NOKIA INTERNAL USE ONLY Page 2 – 11 Copyright © 2012 Nokia. All rights reserved.
Page 40: Mj-305 And Ss-293 Rf Guiding Plate Assembly Instructions
RM-824; RM-825; RM-826 Service Tools and Service Concepts Type Description CA-205PS Power cable MJ-305 and SS-293 RF guiding plate assembly instructions Page 2 – 12 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 43: Table 1 Audio
3–43 WLAN troubleshooting ..........................3–43 GPS troubleshooting ............................3–44 Introduction to GPS troubleshooting ......................3–44 GPS troubleshooting ............................. 3–46 NFC troubleshooting ............................3–47 Issue 2 NOKIA INTERNAL USE ONLY Page 3 – 3 Copyright © 2012 Nokia. All rights reserved.
Page 44 Figure 7 Component layout of the connecitivity module, top side............... 3–42 Figure 8 Phone Menu->Maps ..........................3–45 Figure 9 GPS Maps .............................. 3–45 Page 3 – 4 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 45: Baseband Main Troubleshooting
Baseband main troubleshooting Context Always start the troubleshooting procedure by running the Nokia Care Suite self tests. If a test fails, please Dead or jammed follow the diagrams below. If the phone is dead and you cannot perform the self tests, go to device troubleshooting .
Page 48: Power And Charging Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide Power and charging troubleshooting A/D converter troubleshooting Troubleshooting flow Page 3 – 8 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 49: Backup Battery Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide Backup battery troubleshooting Troubleshooting flow Issue 2 NOKIA INTERNAL USE ONLY Page 3 – 9 Copyright © 2012 Nokia. All rights reserved.
Page 50: General Power Checking Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide General power checking troubleshooting Troubleshooting flow Page 3 – 10 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 51: Dead Or Jammed Device Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide Dead or jammed device troubleshooting Troubleshooting flow Issue 2 NOKIA INTERNAL USE ONLY Page 3 – 11 Copyright © 2012 Nokia. All rights reserved.
Page 52: Battery Current Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide Battery current troubleshooting Troubleshooting flow Page 3 – 12 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 53: Clocking Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide Clocking troubleshooting Troubleshooting flow Issue 2 NOKIA INTERNAL USE ONLY Page 3 – 13 Copyright © 2012 Nokia. All rights reserved.
Page 54: Wireless Charging Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide Wireless charging troubleshooting Troubleshooting flow Page 3 – 14 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 55: Usb Charging Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide USB charging troubleshooting Troubleshooting flow Issue 2 NOKIA INTERNAL USE ONLY Page 3 – 15 Copyright © 2012 Nokia. All rights reserved.
Page 56: Interface Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide Interface troubleshooting USB flashing fault troubleshooting Troubleshooting flow Page 3 – 16 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 57: Usb Data Interface Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide USB data interface troubleshooting Troubleshooting flow Issue 2 NOKIA INTERNAL USE ONLY Page 3 – 17 Copyright © 2012 Nokia. All rights reserved.
Page 58: Sim Interface Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide SIM interface troubleshooting Troubleshooting flow Page 3 – 18 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 59: Microsd Interface Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide MicroSD interface troubleshooting Troubleshooting flow Issue 2 NOKIA INTERNAL USE ONLY Page 3 – 19 Copyright © 2012 Nokia. All rights reserved.
Page 60: Dram Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide DRAM troubleshooting Troubleshooting flow Page 3 – 20 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 61: Emmc Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide eMMC troubleshooting Troubleshooting flow Issue 2 NOKIA INTERNAL USE ONLY Page 3 – 21 Copyright © 2012 Nokia. All rights reserved.
Page 62: Display Module Troubleshooting
(sometimes called off-pixels, stuck-off, or black pixels) are characterized by the appearance of dark pixels in white, red, green, or blue full-screen picture. Page 3 – 22 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 63: Introduction To Display Troubleshooting
Sr. No Signal name Measuring point Description VDDI VREG_L23_1V8 VPNL VPH_PWR ELVSS Negative supply to display -4.0V ELVDD Positive supply to display 4.6V Issue 2 NOKIA INTERNAL USE ONLY Page 3 – 23 Copyright © 2012 Nokia. All rights reserved.
Page 64: Display Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide Display troubleshooting Troubleshooting flow Page 3 – 24 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 65: Touch Panel Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide Touch panel troubleshooting Troubleshooting flow Issue 2 NOKIA INTERNAL USE ONLY Page 3 – 25 Copyright © 2012 Nokia. All rights reserved.
Page 66: Keys Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide Keys troubleshooting Keyboard troubleshooting Troubleshooting flow Page 3 – 26 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 67: Keyboard Backlight Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide Keyboard backlight troubleshooting Troubleshooting flow Issue 2 NOKIA INTERNAL USE ONLY Page 3 – 27 Copyright © 2012 Nokia. All rights reserved.
Page 68: Sensors Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide Sensors troubleshooting Accelerometer troubleshooting Troubleshooting flow Page 3 – 28 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 69: Magnetometer Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide Magnetometer troubleshooting Troubleshooting flow Issue 2 NOKIA INTERNAL USE ONLY Page 3 – 29 Copyright © 2012 Nokia. All rights reserved.
Page 70: Alphamon Technical Description And Troubleshooting
The light intensity could vary depending on how the finger hides the Alphamon window. Proximity and ALS sensor calibration Use Service SW to calibrate the proximity and ALS sensors after A-cover assembly change. Page 3 – 30 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 71: Proximity And Als Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide Proximity and ALS troubleshooting Troubleshooting flow Issue 2 NOKIA INTERNAL USE ONLY Page 3 – 31 Copyright © 2012 Nokia. All rights reserved.
Page 72: Gyroscope Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide Gyroscope troubleshooting Troubleshooting flow Page 3 – 32 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 73: Audio Troubleshooting
Each audio loop sets routing from the specified input to the specified output enabling a quick in-out test. Loop path gains are fixed and they cannot be changed using the application. Issue 2 NOKIA INTERNAL USE ONLY Page 3 – 33 Copyright © 2012 Nokia. All rights reserved.
Page 74: External Earpiece Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide External earpiece troubleshooting Troubleshooting flow Page 3 – 34 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 75: External Microphone Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide External microphone troubleshooting Troubleshooting flow Issue 2 NOKIA INTERNAL USE ONLY Page 3 – 35 Copyright © 2012 Nokia. All rights reserved.
Page 76: Internal Earpiece Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide Internal earpiece troubleshooting Troubleshooting flow Page 3 – 36 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 77: Internal Handsfree (Ihf) Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide Internal handsfree (IHF) troubleshooting Troubleshooting flow Issue 2 NOKIA INTERNAL USE ONLY Page 3 – 37 Copyright © 2012 Nokia. All rights reserved.
Page 78: Internal Microphone Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide Internal microphone troubleshooting Troubleshooting flow Page 3 – 38 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 79: Vibra Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide Vibra troubleshooting Troubleshooting flow Issue 2 NOKIA INTERNAL USE ONLY Page 3 – 39 Copyright © 2012 Nokia. All rights reserved.
Page 80: Connectivity Troubleshooting
(GNSS) and the right upper corner (WLAN/BT) of the backside of the unibody. The WLAN 2 GHz/Bluetooth and WLAN 5 GHz are connected to the same dual band antenna. The antenna positions are presented in the following figure. Page 3 – 40 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 82: Bluetooth And Wlan Troubleshooting
The Bluetooth and WLAN functionality can be checked with the care tool. A phone data cable connected to a PC with care service SW is required. The recommended troubleshooting procedure is described in chapter Baseband main troubleshooting (page 3–5 ) Page 3 – 42 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 83: Bluetooth Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide Bluetooth troubleshooting Troubleshooting flow Issue 2 NOKIA INTERNAL USE ONLY Page 3 – 43 Copyright © 2012 Nokia. All rights reserved.
Page 84: Wlan Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide WLAN troubleshooting Troubleshooting flow GPS troubleshooting Introduction to GPS troubleshooting Use the phone Menu —>Maps to check GPS. Page 3 – 44 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 86: Gps Troubleshooting
RM-824; RM-825; RM-826 BB Troubleshooting Guide GPS troubleshooting Troubleshooting flow Page 3 – 46 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 87: Nfc Troubleshooting
The self tests run from care testing software are used for fault diagnosis. If the care testing software is not available, the functional tests with phone accessories are sufficient to verify the functionality of NFC. Issue 2 NOKIA INTERNAL USE ONLY Page 3 – 47 Copyright © 2012 Nokia. All rights reserved.
Page 88 Near Field Communication test window with the Upgrade Firmware test. The recommended troubleshooting procedure is described in chapter Baseband main troubleshooting (page 3–5 ) Page 3 – 48 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 97 Figure 12 Antennas on the component layout, bottom side................. 4–10 Figure 13 Antennas ............................4–11 Figure 14 Antenna contact areas........................4–12 Figure 15 NFC antenna in battery cover......................4–12 Issue 2 NOKIA INTERNAL USE ONLY Page 4 – 3 Copyright © 2012 Nokia. All rights reserved.
Page 99: General Instructions For Cellular Rf Troubleshooting
Level of repair The scope of this guideline is to verify functionality of the cellular RF block as well as possible without removing RF shields. Issue 2 NOKIA INTERNAL USE ONLY Page 4 – 5 Copyright © 2012 Nokia. All rights reserved.
Page 100: Cellular Rf Key Components
RM-824; RM-825; RM-826 Cellular RF troubleshooting Cellular RF key components Figure 10 RF key component layout, top side Page 4 – 6 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 101: Cellular Rf Main Troubleshooting
Figure 11 RF key components Cellular RF main troubleshooting Context Always start the cellular RF related troubleshooting procedure by following the diagram below. Issue 2 NOKIA INTERNAL USE ONLY Page 4 – 7 Copyright © 2012 Nokia. All rights reserved.
Page 103: Rf Testing
C-clips. The antenna module also functions as an acoustic chamber that has a Donau IHF speaker. Issue 2 NOKIA INTERNAL USE ONLY Page 4 – 9 Copyright © 2012 Nokia. All rights reserved.
Page 104 Connection to the main PWB is implemented by two pogo pins. Each of the antenna assemblies is glued into the unibody. Figure 12 Antennas on the component layout, bottom side Page 4 – 10 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 105: Antenna Troubleshooting
If the antenna contact areas are obstructed or covered, the contact areas should be cleaned or the entire unibody replaced. Issue 2 NOKIA INTERNAL USE ONLY Page 4 – 11 Copyright © 2012 Nokia. All rights reserved.
Page 106 RM-824; RM-825; RM-826 Cellular RF troubleshooting Figure 14 Antenna contact areas Figure 15 NFC antenna in battery cover Page 4 – 12 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 107: Wlan Antenna Troubleshooting
RM-824; RM-825; RM-826 Cellular RF troubleshooting WLAN antenna troubleshooting Troubleshooting flow Issue 2 NOKIA INTERNAL USE ONLY Page 4 – 13 Copyright © 2012 Nokia. All rights reserved.
Page 108: Gps Antenna Troubleshooting
RM-824; RM-825; RM-826 Cellular RF troubleshooting GPS antenna troubleshooting Troubleshooting flow Page 4 – 14 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 109: Nfc Antenna Troubleshooting
RM-824; RM-825; RM-826 Cellular RF troubleshooting NFC antenna troubleshooting Troubleshooting flow Issue 2 NOKIA INTERNAL USE ONLY Page 4 – 15 Copyright © 2012 Nokia. All rights reserved.
Page 113 Figure 30 Enlargement of a hot pixel....................... 5–15 Figure 31 Light from the flash has reflected on particles in front of the camera ........5–15 Issue 2 NOKIA INTERNAL USE ONLY Page 5 – 3 Copyright © 2012 Nokia. All rights reserved.
Page 115: Introduction To Camera Module Troubleshooting
Usually the amount of pixels in the camera sensor. In some occasions the term resolution is used for describing the sharpness of the images. Issue 2 NOKIA INTERNAL USE ONLY Page 5 – 5 Copyright © 2012 Nokia. All rights reserved.
Page 116: The Effect Of Image Taking Conditions On Image Quality
See the figure below for an example. This is normal; do not change the camera module. Page 5 – 6 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 118: Phone Display
Flickering occurs also under high artificial illumination level. Flickering only occurs when the rolling shutter is used. This is normal behaviour; do not change the camera module. Page 5 – 8 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 119 Generally this kind of reflections are common in all optical systems. This is normal behaviour; do not change the camera module. Figure 22 A lens reflection effect caused by sunshine Issue 2 NOKIA INTERNAL USE ONLY Page 5 – 9 Copyright © 2012 Nokia. All rights reserved.
Page 120: Image Quality Analysis
In addition, there are many other kinds of possibilities for bad image quality, but those are ruled out from the scope of this document since the probability of their appearance is small. Page 5 – 10 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 121: Testing For Dust In Camera Module
Any particles inside the cavity between the protection window and lens have most probably been trapped there in the assembly phase at a Nokia factory. Unauthorized disassembling of the product can also be the root of the problem. However, in most cases it should be possible to remove the particle(s) by using clean compressed air.
Page 122: Testing Camera Image Sharpness
• If possible, compare the image to another image of the same scene, taken with a different device. Note that the reference device has to be a similar Nokia phone. There are several conditions in which AF operation is challenging for the camera module, i.e. failing from time to time.
Page 123: Effects Of Dirty Or Defective Camera Lens Protection Window
A smeared fingerprint may be hard to see on the protective window but if will affect the image quality. These flares can be avoided by cleaning the window with a suitable cloth. Issue 2 NOKIA INTERNAL USE ONLY Page 5 – 13 Copyright © 2012 Nokia. All rights reserved.
Page 124: Faulty Pixels In Images
When examining an image for defect pixels, test images should be viewed as 100% enlargements on a PC monitor. Page 5 – 14 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 125: Flash Photography Problems
• Dust reflections. Dust or water drops in front of the flash unit may reflect strongly to the camera sensor. See the following figure. Figure 31 Light from the flash has reflected on particles in front of the camera Issue 2 NOKIA INTERNAL USE ONLY Page 5 – 15 Copyright © 2012 Nokia. All rights reserved.
Page 126: Camera Troubleshooting Flowcharts
RM-824; RM-825; RM-826 Camera Module Troubleshooting Camera troubleshooting flowcharts No recognizable viewfinder image Troubleshooting flow Page 5 – 16 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 127: Bad Image Quality Troubleshooting
Main camera troubleshooting Context First verify the problem by testing the camera with a camera application. In case of image quality (IQ) related problems: Issue 2 NOKIA INTERNAL USE ONLY Page 5 – 17 Copyright © 2012 Nokia. All rights reserved.
Page 128 • Measure the camera fuse F1400 and change it if needed. If the fuse is broken change also the camera module. • Visually inspect component/PWB damages • Change the main camera and test again Page 5 – 18 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 130: Camera Flash Troubleshooting
• Check the flash LED with a multimeter. If the LED is broken change the unibody (the flash LED is part of it). Page 5 – 20 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 132: Front (Secondary) Camera Troubleshooting
• Visually inspect component/PWB damages • Using a multimeter, measure the camera related external components (resistors and capacitors) that are visible next to the camera Page 5 – 22 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 137 WCDMA VIII (900) frequencies........................6–29 LTE B1 frequencies ............................6–29 LTE B3 frequencies ............................6–29 LTE B7 frequencies ............................6–29 LTE B8 frequencies ............................6–29 Issue 2 NOKIA INTERNAL USE ONLY Page 6 – 3 Copyright © 2012 Nokia. All rights reserved.
Page 138 Figure 53 Vibra diagram ............................ 6–25 Figure 54 AHJ connector pole positions ......................6–26 Figure 55 AHJ connector diagram........................6–26 Figure 56 RF block diagram..........................6–27 Page 6 – 4 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 139: Introduction
N7800 PN544C3 N6500 Main RF connector X7812 RF connector For Band 7 antenna (RM-825) X7802 Diversity RF connector X7806 WLAN/BT RF connector X6300 Issue 2 NOKIA INTERNAL USE ONLY Page 6 – 5 Copyright © 2012 Nokia. All rights reserved.
Page 140 3-axis magnetic sensor N1110 Combined Proximity Alphamon N1101 Sensor and Ambient Light Sensor Gyroscope 3-axis sensor N1120 Camera socket SMIA85++ AF camera X1400 Page 6 – 6 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 143: Energy Management
In the table below normal and extreme voltages are shown when a BP-5T battery is used. Table 8 Nominal voltages Voltage Voltage [V] Condition General Conditions Nominal voltage 3.700 Lower extreme voltage Issue 2 NOKIA INTERNAL USE ONLY Page 6 – 9 Copyright © 2012 Nokia. All rights reserved.
Page 144: Power Key And System Power Up
SLEEP mode is entered only from PWR_ON mode with the aid of SW when the system’s activity is low. FLASHING FLASHING mode is for SW downloading. Page 6 – 10 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 146: Clock Scheme
NFC powered by the field functionality. Single wire Protocol is also connected between the card reader and NFC module to enable UICC based secure element usage. Page 6 – 12 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 147 For detection of SIM card presence, insertion and removal there are two switches in the SIM connector to enable hot swap functionality. Figure 34 SIM switch behaviour Issue 2 NOKIA INTERNAL USE ONLY Page 6 – 13 Copyright © 2012 Nokia. All rights reserved.
Page 148: Device Memory
The WCN3660 (N6301) chip provides full 802.11 a, b, g, n WLAN, BT and FM radio transceiver connectivity. The FM RX & TX are not supported in RM-824/RM-825. WCN is the name given to a generic technology release that combines WLAN, Bluetooth, and FM RX radio on a single monolithic IC.
Page 149: Gnss Interface
NFC works at 13.56 MHz frequency. It is connected to the host processor via I2C bus. The system has also ENABLE and RESET lines from the host, and IRQ and CLK_REQ lines to the host. NFC requires VBAT and Issue 2 NOKIA INTERNAL USE ONLY Page 6 – 15 Copyright © 2012 Nokia. All rights reserved.
Page 150: Microusb
Hot swap is supported, which means that USB devices may be plugged in and out at any time. MicroUSB connector This phone is provided with a specific connector for microUSB. Figure 39 MicroUSB connector Page 6 – 16 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 151: User Interface
800 rows x 480 columns. The dimension of the display module is 59.60 mm x 100.80 mm x 1.28 mm. The module interfaces to the phone via FPC with a 50 pins board-to-board connector. Issue 2 NOKIA INTERNAL USE ONLY Page 6 – 17 Copyright © 2012 Nokia. All rights reserved.
Page 152: Cameras
MSM8960 and controlled by the I2C bus. Image data is transferred to the MSM8960 for furher processing over CSI-2 (PRI_CAM_CSI). Page 6 – 18 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 153: Illumination
BACK, HOME and SEARCH keys illumination is supported and is handled by three white LEDs (assembled in LED Flex). These LEDs are controlled by PMIC (internal driver). Figure 44 Illumination diagram Issue 2 NOKIA INTERNAL USE ONLY Page 6 – 19 Copyright © 2012 Nokia. All rights reserved.
Page 154: Keypad Interface
• ±2g/±8g dynamically selectable scale • I C/SPI digital output interface • Embedded self test • 10000g high shock survivability • Pb free/RoHS compliancy Page 6 – 20 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 155: Magnetometer
The 3D gyroscope (N1120) sensor is connected to MSM8960 via two GPIOS (68 and 69) and the I2C bus. Power is provided from VREG _S4_1V8 and VREG_L9_2V85 from the PMIC. Issue 2 NOKIA INTERNAL USE ONLY Page 6 – 21 Copyright © 2012 Nokia. All rights reserved.
Page 156: Audio Concept
TPA2012 (N2120), BoostMono (N2150) along with Audio IC WCD9310 provides the analogue audio output interfaces and MSM8960 provides the digital audio output interface support. Page 6 – 22 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 157: Internal Earpiece
Internal earpiece The internal earpiece used is Lean (6X12) and is connected to WCD9310 Codec EAR_P and EAR_N lines. Figure 50 Internal earpiece diagram Issue 2 NOKIA INTERNAL USE ONLY Page 6 – 23 Copyright © 2012 Nokia. All rights reserved.
Page 158: Internal Handsfree (Ihf) Speaker
Figure 51 Internal handsfree (IHF) speaker diagram Internal microphones Tufnel microphones are used as internal microphones. The digital microphones are connected to WCD9310 Codec. Page 6 – 24 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 159: External Earpiece And Microphone
Vibra Vibra is connected to VIBRA_N and VIBRA_P lines which are connected to N2180 TPA2012D2. Figure 53 Vibra diagram Issue 2 NOKIA INTERNAL USE ONLY Page 6 – 25 Copyright © 2012 Nokia. All rights reserved.
Page 160: Ahj Connector
The transceiver consists in one PWB. Located on the top side of the PWB it consists of RF, BT, WLAN and GPS engines. Page 6 – 26 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 161: Frequency
Channel TX Freq RX Freq TX VCO Freq RX VCO Freq (MHz) (MHz) (MHz) (MHz) 880.2 925.2 3520.8 3700.8 897.4 942.4 3589.6 3769.6 Issue 2 NOKIA INTERNAL USE ONLY Page 6 – 27 Copyright © 2012 Nokia. All rights reserved.
Page 162: Gsm1800 Frequencies
Downlink CH (RX) RX Freq RX VCO Freq (MHz) (MHz) (MHz) (MHz) 4132 826.4 3305.6 4357 871.4 3485.6 4183 836.6 3346.4 4408 881.6 3526.4 Page 6 – 28 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 163: Wcdma Viii (900) Frequencies
Downlink CH (RX) RX Freq RX VCO Freq (MHz) (MHz) (MHz) (MHz) 21450 880.0 3520.0 3450 925.0 3700.0 21625 897.5 3590.0 3625 942.5 3770.0 Issue 2 NOKIA INTERNAL USE ONLY Page 6 – 29 Copyright © 2012 Nokia. All rights reserved.
Page 164 RX VCO Freq (MHz) (MHz) (MHz) (MHz) 24150 832.0 3328.0 6150 791.0 3164.0 24300 847.0 3388.0 6300 806.0 3224.0 24449 861.9 3447.6 6449 820.9 3283.6 Page 6 – 30 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 166 RM-824; RM-825; RM-826 Service information differences between RM-824 and RM-825 (This page left intentionally blank.) Page 7 – 2 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 167 LTE B17 frequencies ............................7–18 List of Tables Table 10 Remote connectivity..........................7–5 List of Figures Figure 57 PWB markings in RM-824 and RM-825 .................... 7–13 Figure 58 RF key component layout, top side ....................7–14 Figure 59 RF key components ...........................
Page 168 RM-824; RM-825; RM-826 Service information differences between RM-824 and RM-825 (This page left intentionally blank.) Page 7 – 4 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 169: General Information
Service information differences between RM-824 and RM-825 General information RM-824 product data RM-824 Nokia Lumia 820 is a WCDMA/LTE band variant of the RM-825 Nokia Lumia 820. The key product data differences between the RM-824 and RM-825 are described below. Connectivity Table 10 Remote connectivity...
Page 170: Main Rf Characteristics For Gsm850/900/1800/1900, Wcdma Viii/V/Iv/Ii/I And Lte B2/B4/B5/B17 Phones
RM-824; RM-825; RM-826 Service information differences between RM-824 and RM-825 Main RF characteristics for GSM850/900/1800/1900, WCDMA VIII/V/IV/II/I and LTE B2/B4/B5/ B17 phones Parameter Unit Cellular system GSM850, EGSM900, GSM1800/1900, WCDMA VIII (900), WCDMA V (850), WCDMA IV (1700/2100), WCDMA II (1900), WCDMA I (2100),...
Page 171 RM-824; RM-825; RM-826 Service information differences between RM-824 and RM-825 Parameter Unit Main antenna GSM850: 824 - 849 MHz Tx frequency band EGSM900: 880 - 915 MHz GSM1800: 1710 - 1785 MHz GSM1900: 1850 - 1910 MHz WCDMA VIII (900): 880 - 915 MHz...
Page 172 RM-824; RM-825; RM-826 Service information differences between RM-824 and RM-825 Parameter Unit Number of RF channels GSM850: 124 GSM900: 174 GSM1800: 374 GSM1900: 299 WCDMA VIII (900): 152 WCDMA V (850): 108 WCDMA IV (1700/2100): 211 WCDMA II (1900): 289...
Page 173: Main Rf Characteristics For Gsm850/900/1800/1900, Wcdma Viii/V/Ii/I And Lte B4/B17
RM-824; RM-825; RM-826 Service information differences between RM-824 and RM-825 Parameter Unit Number of Tx power levels GSM850: 15 GSM900: 15 GSM1800: 16 GSM1900: 16 WCDMA VIII (900): 75 WCDMA V (850): 75 WCDMA IV (1700/2100): 75 WCDMA II (1900): 75...
Page 174 RM-824; RM-825; RM-826 Service information differences between RM-824 and RM-825 Parameter Unit Main antenna GSM850: 824 - 849 MHz Tx frequency band EGSM900: 880 - 915 MHz GSM1800: 1710 - 1785 MHz GSM1900: 1850 - 1910 MHz WCDMA VIII (900): 880 - 915 MHz...
Page 175: Service Tools And Service Concepts
The table below gives a short overview of service devices that can be used for testing, error analysis, and repair of product RM-824; RM-825; RM-826. For the correct use of the service devices, and the best effort of workbench setup, please refer to various concepts.
Page 176 RM-824; RM-825; RM-826 Service information differences between RM-824 and RM-825 MJ-305 Module jig 0781487 Module jig MJ-305 can be used for flashing via USB and RF, battery and system testing. The main functions are: • Powering with external power • WLAN/BT/GPS RF-interfaces with probes •...
Page 177: Bb Troubleshooting
PWB markings in RM-824 and RM-825 Mechanically RM-824 and RM-825 are identical and thus the HW differences are noticeable only by taking a closer look at the PWB. As illustrated in the figure below, the markings on the PWB enable quick differentiation between the two variants.
Page 178: Rf Troubleshooting
RM-824; RM-825; RM-826 Service information differences between RM-824 and RM-825 RF troubleshooting Cellular RF key components Figure 58 RF key component layout, top side Page 7 – 14 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 179: Rf Tuning And Testing
Phone description Key components Function Description Item ref Main PWB GSM/WCDMA B1/WCDMA WCDMA I, V, LTE B5 (RM-824 US) N7550 B5/LTE B5 PA WCDMA I, V (RM-824 AT&T) Issue 2 NOKIA INTERNAL USE ONLY Page 7 – 15 Copyright © 2012 Nokia. All rights reserved.
Page 180: Cellular Rf Technical Description
Cellular RF technical description The RM-824 transceiver unit supports GSM 850/900/1800/1900, EGPRS (EDGE), WCDMA Band I (2100), II (1900), IV (1700/2100), V (850) and VIII (900), LTE B2/B4/B5/B17, and HSPA. The transceiver is compatible with 3GPP Release 6 specification, and supports Bluetooth 2.1+EDR standard and WLAN a/b/g/n (2.4 GHz and 5.0 GHz).
Page 181: Hac
RM-824; RM-825; RM-826 Service information differences between RM-824 and RM-825 HAC coil is connected to N2180 TPA2012D2 which is connected to WCD9310. Figure 61 HAC diagram WCDMA IV (1700/2100) frequencies Uplink CH (TX) TX Freq TX VCO Freq Downlink CH (RX)
Page 182: Lte B5 Frequencies
RM-824; RM-825; RM-826 Service information differences between RM-824 and RM-825 Uplink CH (TX) TX Freq TX VCO Freq Downlink CH (RX) RX Freq RX VCO Freq (MHz) (MHz) (MHz) (MHz) 20175 1732.5 3465.0 2175 2132.5 4265.0 20399 1754.9 3509.8 2399 2154.9...
Page 184 RM-824; RM-825; RM-826 Service information differences between RM-826 and RM-824 (This page left intentionally blank.) Page 8 – 2 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 185 WCDMA IV (1700/2100) frequencies ......................8–13 List of Tables Table 11 Remote connectivity..........................8–5 List of Figures Figure 62 PWB markings in RM-826 and RM-824 ....................8–9 Figure 63 RF key component layout, top side ....................8–10 Figure 64 RF key components ...........................
Page 186 RM-824; RM-825; RM-826 Service information differences between RM-826 and RM-824 (This page left intentionally blank.) Page 8 – 4 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 187: General Information
Service information differences between RM-826 and RM-824 General information RM-826 product data RM-826 is a non-LTE (HSPA+) variant of the RM-824 US Nokia Lumia 820. The key product data differences between the RM-826 and RM-824 are described below. Connectivity Table 11 Remote connectivity...
Page 188 EDGE900: +5 … +27 dBm/3.2 mW … 501 mW EDGE1800: +0 … +26 dBm/1 mW … 398 mW EDGE1900:+0 … +26 dBm/1 mW … 398 mW Page 8 – 6 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 189: Service Tools And Service Concepts
The table below gives a short overview of service devices that can be used for testing, error analysis, and repair of product RM-824; RM-825; RM-826. For the correct use of the service devices, and the best effort of workbench setup, please refer to various concepts.
Page 190 SMA to N-Connector approximately 610 mm. Attenuation for: • GSM850/900: 0.3+-0.1 dB • GSM1800/1900: 0.5+-0.1 dB • WCDMA V/VIII: 0.3+-0.1dB • WCDMA I/II/IV: 0.5+-0.1dB • BT/WLAN: 0.5+-0.1dB Page 8 – 8 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 191: Bb Troubleshooting
PWB markings in RM-826 and RM-824 Mechanically RM-826 and RM-824 are identical and thus the HW differences are noticeable only by taking a closer look at the PWB. As illustrated in the figure below, the markings on the PWB enable quick differentiation between the two variants.
Page 192: Rf Troubleshooting
RM-824; RM-825; RM-826 Service information differences between RM-826 and RM-824 RF troubleshooting Cellular RF key components Figure 63 RF key component layout, top side Page 8 – 10 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 193: Rf Tuning And Testing
Phone description Key components Function Description Item ref Main PWB GSM/WCDMA B1/WCDMA B5 PA N7550 WCDMA B2 PA N7500 WCDMA B4 PA N7530 Issue 2 NOKIA INTERNAL USE ONLY Page 8 – 11 Copyright © 2012 Nokia. All rights reserved.
Page 194: Cellular Rf Technical Description
RF signals to the base station. It consists of the following functional sub-modules: Receiver, Frequency Synthesizer and Transmitter. Figure 65 RF block diagram Page 8 – 12 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 195: Wcdma Iv (1700/2100) Frequencies
RX VCO Freq (MHz) (MHz) (MHz) (MHz) 1312 1712.4 3424.8 1537 2112.4 4224.8 1412 1732.4 3464.8 1675 2140.0 4280 1513 1752.6 3505.2 1738 2152.6 4305.2 Issue 2 NOKIA INTERNAL USE ONLY Page 8 – 13 Copyright © 2012 Nokia. All rights reserved.
Page 196 RM-824; RM-825; RM-826 Service information differences between RM-826 and RM-824 (This page left intentionally blank.) Page 8 – 14 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 199 Clock Timing Sleep and interrupt block of Tiku Continuous wave D/A-converter Digital-to-analogue converter Digital-to-analogue converter Digital Battery Interface DBus DSP controlled serial bus connected between UPP_WD2 and Helgo Issue 2 NOKIA INTERNAL USE ONLY Page Glossary– 3 Copyright © 2012 Nokia. All rights reserved.
Page 200 High speed circuit switched data (data transmission connection faster than GSM) Hardware Input/Output IBAT Battery current Integrated circuit ICHAR Charger current Interface Integrated hands free IMEI International Mobile Equipment Identity Page Glossary– 4 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 201 Phase locked loop (Phone) Permanent memory General Purpose IO (PIO), USARTS and Pulse Width Modulators PURX Power-up reset Printed Wiring Board Pulse width modulation Issue 2 NOKIA INTERNAL USE ONLY Page Glossary– 5 Copyright © 2012 Nokia. All rights reserved.
Page 202 Universal Energy Management chip (Enhanced version) UEMEK See UEME User Interface UPnP Universal Plug and Play Universal Phone Processor UPP_WD2 Communicator version of DCT4 system ASIC Page Glossary– 6 NOKIA INTERNAL USE ONLY Issue 2 Copyright © 2012 Nokia. All rights reserved.
Page 203 WLAN Wireless local area network XHTML Extensible hypertext markup language Zocus Current sensor (used to monitor the current flow to and from the battery) Issue 2 NOKIA INTERNAL USE ONLY Page Glossary– 7 Copyright © 2012 Nokia. All rights reserved.

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