Nokia RM-824 Service Manual Download Page 158

Page: 158 / 204

Internal handsfree (IHF) speaker

IHF speaker used is Amazon and is connected to BoostMono Vallu N2150. Vallu is a mono D-class speaker

amplifier with an integrated inductive boost converter. Vallu’s differential audio inputs are connected to

WCD9310 Line_out1 and Line_out3 and it can be enabled/disabled by PMIC GPIO19.

Figure 51 Internal handsfree (IHF) speaker diagram

Internal microphones

Tufnel microphones are used as internal microphones. The digital microphones are connected to WCD9310

Codec.

RM-824; RM-825; RM-826

System Module

Page 6 – 24

NOKIA INTERNAL USE ONLY

Issue 2

Summary of Contents for RM-824

Page 2: ... BB Troubleshooting Guide chapter Chapter 8 titled Service information 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 RM 824 RM 825 RM 826 Amendment Record Sheet Page ii NOKIA INTERNAL USE ONLY Issue 2 Copyright 2012 Nokia All rights reserved ...

Page 3: ... circumstances shall Nokia be responsible for any loss of data or income or any special incidental consequential or indirect damages howsoever caused The contents of this document are provided as is Except as required by applicable law no warranties of any kind either express or implied including but not limited to the implied warranties of merchantability and fitness for a particular purpose are ...

Page 4: ...CTIONS MAKE SURE YOU HAVE SWITCHED OFF ALL EQUIPMENT Cautions Servicing and alignment must be undertaken by qualified personnel only Ensure all work is carried out at an anti static workstation and that an anti static wrist strap is worn Ensure solder wire or foreign matter does not enter the telephone as damage may result Use only approved components as specified in the parts list Ensure all comp...

Page 5: ...ved 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 RM 824 RM 825 RM 826 For your safety Issue 2 NOKIA INTERNAL USE ONLY Page v Copyright 2012 Nokia All rights reserved ...

Page 6: ...aged by static electricity discharge All ESD sensitive parts must be packed in metallized protective bags during shipping and handling outside any ESD Protected Area EPA Every repair action involving opening the product or handling the product components must be done under ESD protection ESD protected spare part packages MUST NOT be opened closed out of an ESD Protected Area For more information a...

Page 7: ...s and warp or melt certain plastics Do not store the phone in cold areas When it warms up to its normal temperature moisture can form inside which may damage electronic circuit boards Do not drop knock or shake the phone Rough handling can break internal circuit boards Do not use harsh chemicals cleaning solvents or strong detergents to clean the phone Do not paint the phone Paint can clog the mov...

Page 8: ... MOBILE PHONES Business Group should be notified in writing e mail Please state Title of the Document Issue Number Date of publication Latest Amendment Number if applicable Page s and or Figure s in error Please send to NOKIA CORPORATION Nokia Mobile Phones Business Group Nokia Customer Care PO Box 86 FIN 24101 SALO Finland E mail Service Manuals nokia com RM 824 RM 825 RM 826 Company policy Page ...

Page 9: ...ailable for the product Do not attempt to discharge the battery by any other means Use the battery only for its intended purpose Never use any charger or battery which is damaged Do not short circuit the battery Accidental short circuiting can occur when a metallic object coin clip or pen causes direct connection of the and terminals of the battery metal strips on the battery for example when you ...

Page 11: ... 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 RM 824 RM 825 RM 826 Nokia Lumia 820 L3 4 Service Manual Structure Issue 2 NOKIA INTERNAL USE ONLY Page xi Copyright 2012 Nokia All rights reserved ...

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: ...n RF characteristics for GSM850 900 1800 1900 WCDMA VIII V II I and LTE B1 B3 B7 B8 B20 phones 1 11 Battery endurance 1 14 Environmental conditions 1 14 List of Tables Table 1 Audio 1 9 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 RM 824 RM 825 RM 826 General Information Issue 2 NOKIA INTERNAL USE ONLY Page 1 3 Copyright 2012 Nokia All rights re...

Page 17: ... speed of up to 236 8 kbit s simultaneously with speech With GPRS this means a maximum download speed of up to 64 2 kbit s simultaneously with speech In PS only mode RM 825 supports MSC 12 a maximum of 5 RX 4 TX sum 6 timeslots resulting in a maximum download speed of up to 296 kbit s with EGPRS and up to 107 kbit s with GPRS The device has a large AMOLED 4 3 800 x 480 pixels ClearBlack WVGA touch...

Page 18: ...mat mp4 H 264 for lower fps White balance automatic sunny cloudy incandescent fluorescent Scene automatic night Zoom digital 3x Video recording indicator Photo Aspect ratio 16 9 7 1 Mpix 4 3 8 Mpix 3 2 7 Mpix View finder Full screen view finder Still image resolutions up to 8 megapixel 3248 x 2448 Still image file format JPEG EXIF Auto focus Auto exposure center weighted AE Image orientation autom...

Page 19: ...e photos and video between your device and a compatible PC Music Digital music player supports MPEG 4 AAC AAC eAAC MPEG 1 audio Layer3 MP3 WMA Pro 9 and 10 Synchronise music with Zune PC application Stereo FM radio 87 5 108 MHz 76 90 MHz Bluetooth speakers Integrated handsfree speaker Nokia Music Headset WH 208 inbox Media Full screen video playback to view downloaded streamed or recorded video cl...

Page 20: ...ireless technology 2 1 EDR Near Field Communication NFC Nokia 3 5 mm AV connector Additional technical specifications Vibrating alert 3GPP Rel 8 6 compliant Speech codecs supported FR EFR HR AMR NB AMR WB 1 5 GHz dual core processor WCDMA DL 384 kbit s UL 384 kbit s GPRS EGPRS Class B multi slot class 12 Dual Transfer Mode DTM class A multi slot class 11 HSDPA up to 42 1 Mbit s HSUPA 5 76 Mbit s L...

Page 21: ...udio Enhancement Type Music headsets WH 209 inbox 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 RM 824 RM 825 RM 826 General Information Issue 2 NOKIA INTERNAL USE ONLY Page 1 9 Copyright 2012 Nokia All rights reserved ...

Page 22: ...Nokia J BH 806 Table 2 Car Enhancement Type 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 RM 824 RM 825 RM 826 General Information Page 1 10 NOKIA INTERNAL USE ONLY Issue 2 Copyright 2012 Nokia All rights reserved ...

Page 23: ...nsions L x W x T mm Weight g Volume cm3 Transceiver with BP 5T 1650 mAh Li Pol battery pack 124 x 68 5 x 10 7 158 82 Main RF characteristics for GSM850 900 1800 1900 WCDMA VIII V II I and LTE B1 B3 B7 B8 B20 phones Parameter Unit Cellular system GSM850 EGSM900 GSM1800 1900 WCDMA VIII 900 WCDMA V 850 WCDMA II 1900 WCDMA I 2100 LTE B1 2100 LTE B3 1800 LTE B7 2600 LTE B8 900 and LTE B20 800 RM 824 RM...

Page 24: ...z WCDMA I 2100 2110 2170 MHz LTE B1 2100 2110 2170 MHz LTE B3 1800 1805 1880 MHz LTE B7 2600 2620 2690 MHz LTE B8 900 925 960 MHz LTE B20 800 791 821 MHz Main antenna Tx frequency band GSM850 824 849 MHz EGSM900 880 915 MHz GSM1800 1710 1785 MHz GSM1900 1850 1910 MHz WCDMA VIII 900 880 915 MHz WCDMA V 850 824 849 MHz WCDMA II 1900 1850 1910 MHz WCDMA I 2100 1920 1980 MHz LTE B1 2100 1920 1980 MHz ...

Page 25: ... 23 dBm 0 1 uW 251 mW LTE B20 800 40 23 dBm 0 1 uW 251 mW EDGE output power EDGE850 5 27 dBm 3 2 mW 501 mW EDGE900 5 27 dBm 3 2 mW 501 mW EDGE1800 0 26 dBm 1 0 mW 398 mW EDGE1900 0 26 dBm 1 0 mW 398 mW Number of RF channels GSM850 124 GSM900 174 GSM1800 374 GSM1900 299 WCDMA VIII 900 152 WCDMA V 850 108 WCDMA II 1900 289 WCDMA I 2100 277 LTE B1 2100 600 LTE B3 1800 750 LTE B7 2600 700 LTE B8 900 3...

Page 26: ...s Temperature conditions Environmental condition Ambient temperature Notes Normal operation 10oC 55oC Specifications fulfilled Reduced performance 25oC 15oC 55oC 70oC Operational for shorts periods only Intermittent operation 40oC 15oC 70oC 85 oC Operation not guaranteed but an attempt to operate does not damage the phone No operation or storage 40oC 85oC No storage or operation an attempt may dam...

Page 27: ...ld withstand the following vibrations 5 10 Hz 10dB octave 10 50 Hz 5 58 m2 s3 0 0558 g2 Hz 50 300 Hz 10 dB octave ESD strength Conducted discharge is 8 kV 10 discharges and air contact 15 kV 10 discharges 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 RM 824 RM 82...

Page 31: ...pt 2 9 Concept for flashing and product code change 2 10 USB flash concept with MJ 305 2 11 MJ 305 and SS 293 RF guiding plate assembly instructions 2 12 List of Figures Figure 2 POS flash concept 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 RM 824 RM 825 RM 826 Service Tools and Service Concepts Issue 2 NOKIA INT...

Page 33: ...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 CA 101 Micro USB cable 0730634 The CA 101 is a USB to microUSB data cable that allows connections between the PC and the phone CA 158RS RF t...

Page 34: ...87 The CA 205PS power cable is used with MJ 305 module jig to supply a controlled voltage RM 824 RM 825 RM 826 Service Tools and Service Concepts Page 2 6 NOKIA INTERNAL USE ONLY Issue 2 Copyright 2012 Nokia All rights reserved ...

Page 35: ... this jig CA 158RS cable is used together with this jig for RF testing Attenuation values for CA 158RS cable Band Default f MHz RX Att RX Default f MHz TX Att TX GSM 850 881 6 0 2 836 6 0 2 GSM 900 942 4 0 2 897 4 0 2 GSM 1800 1842 8 0 3 1747 8 0 3 GSM 1900 1960 0 0 3 1880 0 0 3 WCDMA I LTE B1 2140 0 0 4 1950 0 0 3 WCDMA II 1960 0 0 3 1880 0 0 3 LTE B3 1842 5 0 3 1747 5 0 3 WCDMA V 880 0 0 2 835 0...

Page 36: ...31 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 SS 93 Opening tool 0780727 SS 93 is used for opening JAE connectors Note The SS 93 is included in the Nokia Standard Toolkit RM 824 RM 825 RM 826 Service Tools and Service Conce...

Page 37: ...ipment 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 0 5 0 1dB LTE B1 B3 0 5 0 1dB 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 RM 824 RM 825 RM 826 Service Tools and Service Concepts Issue 2 NOKIA INTERNAL USE ONLY Page 2 9...

Page 38: ... 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 RM 824 RM 825 RM 826 Service Tools and Service Concepts Page 2 10 NOKIA INTERNAL USE ONLY Issue 2 Copyright 2012 Nokia All rights reserved ...

Page 39: ...n Product specific tools MJ 305 Module jig SS 293 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 RM 824 RM 825 RM 826 Service Tools and Service Concepts Issue 2 NOKIA INTERNAL USE ONLY Page 2 11 Copyright 2012 Nokia All rights reserved ...

Page 40: ... CA 205PS Power cable MJ 305 and SS 293 RF guiding plate assembly instructions RM 824 RM 825 RM 826 Service Tools and Service Concepts Page 2 12 NOKIA INTERNAL USE ONLY Issue 2 Copyright 2012 Nokia All rights reserved ...

Page 43: ...light troubleshooting 3 26 Sensors troubleshooting 3 28 Accelerometer troubleshooting 3 28 Magnetometer troubleshooting 3 29 Alphamon technical description and troubleshooting 3 30 Proximity sensor and ambient light sensor ALS 3 30 Proximity and ALS troubleshooting 3 31 Gyroscope troubleshooting 3 31 Audio troubleshooting 3 33 Audio troubleshooting test instructions 3 33 External earpiece troubles...

Page 44: ...ects table 3 23 List of Figures Figure 5 WCN3660 block diagram 3 40 Figure 6 Antennas on component layout bottom side 3 41 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 RM 824 RM 825 RM 826 BB Troubleshooting Guide Page 3 4 NOKIA INTERNAL USE ONLY Issue 2 Copyright 2012 Nokia All rights reserved ...

Page 45: ... Care Suite self tests If a test fails please follow the diagrams below If the phone is dead and you cannot perform the self tests go to Dead or jammed device troubleshooting RM 824 RM 825 RM 826 BB Troubleshooting Guide Issue 2 NOKIA INTERNAL USE ONLY Page 3 5 Copyright 2012 Nokia All rights reserved ...

Page 48: ...and charging troubleshooting A D converter troubleshooting Troubleshooting flow RM 824 RM 825 RM 826 BB Troubleshooting Guide Page 3 8 NOKIA INTERNAL USE ONLY Issue 2 Copyright 2012 Nokia All rights reserved ...

Page 50: ...General power checking troubleshooting Troubleshooting flow RM 824 RM 825 RM 826 BB Troubleshooting Guide Page 3 10 NOKIA INTERNAL USE ONLY Issue 2 Copyright 2012 Nokia All rights reserved ...

Page 51: ...Dead or jammed device troubleshooting Troubleshooting flow RM 824 RM 825 RM 826 BB Troubleshooting Guide Issue 2 NOKIA INTERNAL USE ONLY Page 3 11 Copyright 2012 Nokia All rights reserved ...

Page 52: ...Battery current troubleshooting Troubleshooting flow RM 824 RM 825 RM 826 BB Troubleshooting Guide Page 3 12 NOKIA INTERNAL USE ONLY Issue 2 Copyright 2012 Nokia All rights reserved ...

Page 54: ...Wireless charging troubleshooting Troubleshooting flow RM 824 RM 825 RM 826 BB Troubleshooting Guide Page 3 14 NOKIA INTERNAL USE ONLY Issue 2 Copyright 2012 Nokia All rights reserved ...

Page 56: ...rface troubleshooting USB flashing fault troubleshooting Troubleshooting flow RM 824 RM 825 RM 826 BB Troubleshooting Guide Page 3 16 NOKIA INTERNAL USE ONLY Issue 2 Copyright 2012 Nokia All rights reserved ...

Page 57: ...USB data interface troubleshooting Troubleshooting flow RM 824 RM 825 RM 826 BB Troubleshooting Guide Issue 2 NOKIA INTERNAL USE ONLY Page 3 17 Copyright 2012 Nokia All rights reserved ...

Page 59: ...MicroSD interface troubleshooting Troubleshooting flow RM 824 RM 825 RM 826 BB Troubleshooting Guide Issue 2 NOKIA INTERNAL USE ONLY Page 3 19 Copyright 2012 Nokia All rights reserved ...

Page 62: ... If a part of the image is missing change the display module If the image is otherwise corrupted follow the appropriate troubleshooting diagram Visual defects pixel The display may have some random pixel defects that are acceptable for this type of display The criteria when pixel defects are regarded as a display failure resulting in a replacement of the display are presented in the following tabl...

Page 63: ...ts the display format of 800 columns x 480 rows The dimension of the display module is 61 mm x 103 7 mm x 1 11 mm The display is connected to MSM8960 with a 4 lane MIPI DSI The following references on the PWB help in the effective debugging and troubleshooting of the display Sr No Reference Description 1 X1350 Display connector The following test points on the PWB help in the effective debugging a...

Page 66: ...Keys troubleshooting Keyboard troubleshooting Troubleshooting flow RM 824 RM 825 RM 826 BB Troubleshooting Guide Page 3 26 NOKIA INTERNAL USE ONLY Issue 2 Copyright 2012 Nokia All rights reserved ...

Page 67: ...Keyboard backlight troubleshooting Troubleshooting flow RM 824 RM 825 RM 826 BB Troubleshooting Guide Issue 2 NOKIA INTERNAL USE ONLY Page 3 27 Copyright 2012 Nokia All rights reserved ...

Page 68: ...ensors troubleshooting Accelerometer troubleshooting Troubleshooting flow RM 824 RM 825 RM 826 BB Troubleshooting Guide Page 3 28 NOKIA INTERNAL USE ONLY Issue 2 Copyright 2012 Nokia All rights reserved ...

Page 70: ... ambient light sensor detects the level of ambient light and adjusts the display brightness accordingly whenever the display is active Covering this sensor results in dimmed display lights Use service software to verify that it works Use a finger to hide the Alphamon sensor window the light intensity in mLux changes from 0 to approx 130 000 Note The light intensity could vary depending on how the ...

Page 71: ...Proximity and ALS troubleshooting Troubleshooting flow RM 824 RM 825 RM 826 BB Troubleshooting Guide Issue 2 NOKIA INTERNAL USE ONLY Page 3 31 Copyright 2012 Nokia All rights reserved ...

Page 73: ...ich needs input signal from an external sound source laptop speaker to playback eg 1 kHz sine wave from 5 cm distance Required equipment The following equipment is needed for the tests Oscilloscope Function generator sine waveform Current probe Internal handsfree DPMA output measurement Service software Battery voltage 3 7V Sound source laptop speaker or B K type 4231 calibrator Test procedure Aud...

Page 74: ...External earpiece troubleshooting Troubleshooting flow RM 824 RM 825 RM 826 BB Troubleshooting Guide Page 3 34 NOKIA INTERNAL USE ONLY Issue 2 Copyright 2012 Nokia All rights reserved ...

Page 75: ...External microphone troubleshooting Troubleshooting flow RM 824 RM 825 RM 826 BB Troubleshooting Guide Issue 2 NOKIA INTERNAL USE ONLY Page 3 35 Copyright 2012 Nokia All rights reserved ...

Page 76: ...Internal earpiece troubleshooting Troubleshooting flow RM 824 RM 825 RM 826 BB Troubleshooting Guide Page 3 36 NOKIA INTERNAL USE ONLY Issue 2 Copyright 2012 Nokia All rights reserved ...

Page 77: ...Internal handsfree IHF troubleshooting Troubleshooting flow RM 824 RM 825 RM 826 BB Troubleshooting Guide Issue 2 NOKIA INTERNAL USE ONLY Page 3 37 Copyright 2012 Nokia All rights reserved ...

Page 78: ...Internal microphone troubleshooting Troubleshooting flow RM 824 RM 825 RM 826 BB Troubleshooting Guide Page 3 38 NOKIA INTERNAL USE ONLY Issue 2 Copyright 2012 Nokia All rights reserved ...

Page 80: ... can be logically divided into a 4 line analog baseband interface and a 5 line digital command and control interface The WCN3660 device uses a 48 0 MHz clock from an external crystal B6300 The PMIC Asic supplies the whole WCN3660 solution 1 8V 1 3V and 3 0V The WCN3660 has also an on chip LDO regulator to provide power supply to the WCN3660 1 2 V digital core The integrated LDO input voltage is ap...

Page 82: ...h 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 RM 824 RM 825 RM 826 BB Troubleshooting Guide Page 3 42 NOKIA INTERNAL USE ONLY Issue 2 Copyright 2012 Nokia All rights reserved ...

Page 84: ...oting flow GPS troubleshooting Introduction to GPS troubleshooting Use the phone Menu Maps to check GPS RM 824 RM 825 RM 826 BB Troubleshooting Guide Page 3 44 NOKIA INTERNAL USE ONLY Issue 2 Copyright 2012 Nokia All rights reserved ...

Page 87: ...eature does not work Incorrect SIM card fitted SIM must contain secure element or faulty SWP interface Perform Single Wire test Replacement of SIM connector or engine PWB Poor operating distance Damaged antenna poor antenna connection or transmitter power supply problem Run self tests Replacement of B cover or chassis NFC test coverage The tests listed in the table below should be performed to ver...

Page 88: ...M card is required for this test NFC ASIC contains firmware The firmware can be updated after the phone has been manufactured If the ASIC s manufacturer releases new firmware it will be contained in the phone software The NFC ASIC firmware must be upgraded every time the phone has been serviced irrespective of the service done The upgrading is done in the Near Field Communication test window with ...

Page 97: ...GPS antenna troubleshooting 4 14 NFC antenna troubleshooting 4 14 List of Figures Figure 10 RF key component layout top side 4 6 Figure 11 RF key components 4 7 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 RM 824 RM 825 RM 826 Cellular RF troubleshooting Issue 2 NOKIA INTERNAL US...

Page 99: ... wide area Note All measurements with an RF coupler should be performed in an RF shielded environment because nearby base stations can disturb sensitive receiver measurements If there is no possibility to use an RF shielded environment testing at frequencies of nearby base stations should be avoided Note All communication test set screen dumps are from CMU 200 Other testers are different RF auto t...

Page 100: ...Cellular RF key components Figure 10 RF key component layout top side RM 824 RM 825 RM 826 Cellular RF troubleshooting Page 4 6 NOKIA INTERNAL USE ONLY Issue 2 Copyright 2012 Nokia All rights reserved ...

Page 101: ...roubleshooting 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 ...

Page 103: ...top of the phone NFC antenna which is placed on the battery cover The main antenna covers four GSM bands GSM850 GSM900 GSM1800 and GSM1900 four WCDMA bands WCDMA 8 WCDMA 5 WCDMA 2 and WCDMA 1 and four LTE bands LTE 1 3 8 and LTE 20 and has separate antenna feeds for low and high band The antenna radiators are deposited on a plastic carrier with LDS technology and connected to the board through sta...

Page 104: ...ary receiver The GPS LTE7 MIMO antenna covers GPS and LTE7 bands RM 825 The antenna radiator is deposited on a plastic carrier with LDS technology and connected to the board through standard C clips A diplexer is used to connect the GPS LTE7 MIMO antenna to the respective RF engines The NFC antenna consists of a flexi and a ferrite sheet and is attached to the top of the B cover with adhesive Conn...

Page 105: ...onnections that may need repair Figure 13 Antennas Check all ground connections for mechanical damage Determine if they can be repaired The antennas and IHF speaker are connected to the PWB with C clips Inspect the PWB for damage to any of the antenna and IHF C clips If the C clips are missing or are obviously damaged i e deformed the clips must be replaced with new ones If corrosion is present on...

Page 106: ...Figure 14 Antenna contact areas Figure 15 NFC antenna in battery cover RM 824 RM 825 RM 826 Cellular RF troubleshooting Page 4 12 NOKIA INTERNAL USE ONLY Issue 2 Copyright 2012 Nokia All rights reserved ...

Page 107: ...WLAN antenna troubleshooting Troubleshooting flow RM 824 RM 825 RM 826 Cellular RF troubleshooting Issue 2 NOKIA INTERNAL USE ONLY Page 4 13 Copyright 2012 Nokia All rights reserved ...

Page 108: ...GPS antenna troubleshooting Troubleshooting flow RM 824 RM 825 RM 826 Cellular RF troubleshooting Page 4 14 NOKIA INTERNAL USE ONLY Issue 2 Copyright 2012 Nokia All rights reserved ...

Page 109: ...NFC antenna troubleshooting Troubleshooting flow RM 824 RM 825 RM 826 Cellular RF troubleshooting Issue 2 NOKIA INTERNAL USE ONLY Page 4 15 Copyright 2012 Nokia All rights reserved ...

Page 113: ...by shaking hands 5 7 Figure 18 Near objects get skewed when taking images from a moving vehicle 5 7 Figure 19 Noisy image taken in 70 degrees Celsius 5 8 Figure 20 Image taken against light 5 8 Figure 21 Flicker in an image object illuminated by strong fluorescent light 5 9 Figure 22 A lens reflection effect caused by sunshine 5 9 Figure 23 Good image taken indoors 5 10 Figure 24 Good image taken ...

Page 115: ...tment Autofocus enables camera to take sharp images of objects positioned between 10cm to infinity During AF the viewfinder image will be momentarily blurred as the camera searches for the right focus setting Digital zoom Digital zoom is done by first cropping the image by the zoom ratio and then upscaling it to the output resolution This will decrease the image quality especially with high zoom r...

Page 116: ...ecified to operate satisfactorily from 10 cm to infinite distance of scene objects Trying to photograph objects closer than 10 cm is likely to result in a blurred out of focus image The lack of sharpness is first visible in full resolution images Images taken very close to the subject a limited depth of focus will be visible that is the upper or lower parts of the image may be out of focus This is...

Page 117: ... Figure 18 Near objects get skewed when taking images from a moving vehicle Temperature High temperatures inside the mobile phone cause more noise to appear in images For example in 70 degrees Celsius the noise level may be very high and it further grows if the conditions are dim If the phone processor has been heavily loaded for a long time before taking an image the phone might have considerably...

Page 118: ...ow behind the object the result is usually poor This is normal behaviour do not change the camera module Figure 20 Image taken against light Flicker In some occasions a bright fluorescent light may cause flicker in the viewfinder and captured image This phenomenon may also be a result if images are taken indoors under the mismatch of 50 60 Hz electricity network frequency The electricity frequency...

Page 119: ...st in images This happens because of undesired reflections inside the camera optics 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 RM 824 RM 825 RM 826 Camera Module Troubleshooting Issue 2 NOKIA INTERNAL USE ONLY Page 5 9 Copyright 2012 Nokia All rights reserved ...

Page 120: ...g by narrowing down the amount of test cases The following types of image quality problems may be expected to appear Dust black spots Lack of sharpness Bit errors 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 RM 824 RM 825 RM 826 Camera Module Troubleshooting P...

Page 121: ...n the service technician analyses the phone If a dust particle is lying on the infrared filter surface on either side they are hard to locate because they are out of focus and appear in the image as large grayish and fading edge blobs Sometimes they are invisible to the eye and thus the user probably does not notice them at all However it is possible that a larger particle disturbs the user causin...

Page 122: ...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 These include Low light scenes and night mode Scenes with low contrast Fast moving objects AF operation is disabled on purpo...

Page 123: ...ow has been dirty when some image has been taken or if something else has been wrong That is why the cleanness of the protection window should always be checked and the window should be wiped clean with a suitable cloth Figure 26 Image taken with clear protection window Figure 27 Image taken with greasy protection window Bright point light sources might cause images that have flares around the lig...

Page 124: ...ways saturated to its maximum value it is stuck Stuck pixels may appear as red green blue or white spots in all lightning conditions Camera modules producing images with one or more stuck pixels should be replaced Hot pixels are pixels that easily saturate in dim light conditions It is normal to get a lot of noise and hot pixels in night conditions or otherwise dark conditions The hot pixels shoul...

Page 125: ...ture and ambient lightning This is unwanted but normal feature 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 RM 824 RM 825 RM 826 Camera Module Troubleshooting Issue 2 NOKIA INTERNAL USE ONLY Page 5 15 Copyright 2012 Nokia All rights ...

Page 126: ...ubleshooting flowcharts No recognizable viewfinder image Troubleshooting flow RM 824 RM 825 RM 826 Camera Module Troubleshooting Page 5 16 NOKIA INTERNAL USE ONLY Issue 2 Copyright 2012 Nokia All rights reserved ...

Page 127: ...oubleshooting Main camera troubleshooting Context First verify the problem by testing the camera with a camera application In case of image quality IQ related problems RM 824 RM 825 RM 826 Camera Module Troubleshooting Issue 2 NOKIA INTERNAL USE ONLY Page 5 17 Copyright 2012 Nokia All rights reserved ...

Page 128: ...re is nothing visibly wrong the camera module should be changed If the camera does not start locate the problem using camera tests in the Care suite Other checks without going under the cans 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 RM 824 RM 825 RM 826 Camer...

Page 130: ...onent PWB damages Check the flash LED contact springs Check the flash LED with a multimeter If the LED is broken change the unibody the flash LED is part of it RM 824 RM 825 RM 826 Camera Module Troubleshooting Page 5 20 NOKIA INTERNAL USE ONLY Issue 2 Copyright 2012 Nokia All rights reserved ...

Page 132: ...the camera s field of view such as a broken camera window dirt or a window protective foil still attached If the camera does not start locate the problem using camera tests in the Care suite Other checks without going under the cans Visually inspect component PWB damages Using a multimeter measure the camera related external components resistors and capacitors that are visible next to the camera R...

Page 137: ...6 19 Keypad interface 6 20 Accelerometer 6 20 Magnetometer 6 21 Gyroscope 6 21 Audio concept 6 22 Audio HW architecture 6 22 Internal earpiece 6 23 Internal handsfree IHF speaker 6 24 Internal microphones 6 24 External earpiece and microphone 6 25 Vibra 6 25 AHJ connector 6 26 Cellular RF technical description 6 26 Frequency mappings 6 27 GSM850 frequencies 6 27 GSM900 frequencies 6 27 GSM1800 fre...

Page 138: ...lay diagram 6 18 Figure 43 Camera system interface 6 19 Figure 44 Illumination diagram 6 19 Figure 45 Keypad diagram 6 20 Figure 46 Accelerometer diagram 6 21 Figure 47 Magnetometer diagram 6 21 Figure 48 Gyroscope diagram 6 22 Figure 49 Audio system and AV connector block diagram 6 23 Figure 50 Internal earpiece diagram 6 23 Figure 51 Internal handsfree IHF speaker diagram 6 24 Figure 52 Internal...

Page 139: ... PA N7530 LTE B7 PA N7540 WCDMA B8 LTE B8 PA N7520 LTE B20 PA N7510 PA DC DC converter FAN5903 N7525 SP12T antenna switch module LMSP3WQP D51 N7505 SP5T div antenna switch SKY13358 388LF Z7590 DP4T switch SKY13421 N7575 Oscillators Crystal 19 2 MHZ Crystal 27 MHZ Crystal 48 MHZ B4281 B4800 B6300 CMT memory POP 1 GB LPDDR2 stacked with MSM8960 D4810 WLAN Bluetooth FM radio WCN3660 N6301 GPS GPS Glo...

Page 140: ...icro SIM connector X2700 Audio IC WCD9310 N2190 AV connector Standard 3 5 mm dynamic switching for AHJ and NHJ X2160 Earpiece Lean B2130 Microphone 2 x Tufnel B2132 B2133 IHF Amazon B2135 Vibra SisuX M2110 Accelerometer 3 axis accelerometer Ahti2 N1140 Magnetometer 3 axis magnetic sensor N1110 Combined Proximity Sensor and Ambient Light Sensor Alphamon N1101 Gyroscope 3 axis sensor N1120 Camera so...

Page 143: ...ty by a battery internal pull down resistor Charging The phone can be charged through the micro USB interface Charging is controlled by energy management and external components are needed to protect the baseband module against EMC reverse polarity and transient frequency deviation Charging a dead battery It may take up to several minutes before the phone indicates that it is charging if the batte...

Page 144: ...red down with the aid of SW The power key is connected to EM ASIC N2200 via the KYPD_PWR_N signal Modes of operation Mode Description NO_SUPPLY Dead mode means that the main battery is not present or its voltage is too low below N2200 master reset threshold and that the back up battery voltage is too low BACK_UP The main battery is not present or its voltage is too low but back up battery is adequ...

Page 146: ...8921 N4200 and an external interface between EM ASIC and micro SIM contacts SIM power supply VREG_L15 is fed through NFC N6500 module to enable 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 RM 824 RM 825 RM 826 System Module Page 6 12 NOKIA INTERNAL USE ONLY Issue 2 Copyright 2012 Nokia...

Page 147: ...presence insertion and removal there are two switches in the SIM connector to enable hot swap functionality Figure 34 SIM switch behaviour RM 824 RM 825 RM 826 System Module Issue 2 NOKIA INTERNAL USE ONLY Page 6 13 Copyright 2012 Nokia All rights reserved ...

Page 148: ...CLK 8 data signals DAT a reset and command CMD wires The eMMC interface is made up of the SDC2 bus from the MSM The eMMC consists of an internal NAND controller and an MMC controller for I O interface It is a dual supply device which requires VCC of 2 9V for the NAND core and VCCQ of 1 8V for the MMC I O interface WLAN BT interface The WCN3660 N6301 chip provides full 802 11 a b g n WLAN BT and FM...

Page 149: ...he four lines are used to connect Rx BBF output pins to ADC input pins For dual band operation at 2 4 and 5 0 GHz the WCN3660 device uses a 48 0 MHz clock from an external crystal Figure 36 CWS block diagram GNSS interface GPS Glonass support is built into the RTR8600 and interfaces with the MSM8960 GNSS Processor The 19 2 MHz reference clock of RTR8600 is also used for GPS The front end includes ...

Page 150: ...e for USB Universal Serial Bus USB is a differential serial bus that provides a wired connectivity between a PC and peripheral devices as in this case a mobile phone The phone supports USB 2 0 with High Speed 480 Mbps 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 Mi...

Page 151: ...plied by VPH_PWR The current this LED consumes is controlled by Alphamon and set using software The interrupt output of Alphamon changes state when the infra red light from the LED is reflected back by a suitable reflective surface The ambient light sensor detects the level of ambient light and adjusts the display whenever the display is active Covering this sensor results in dimmed display Figure...

Page 152: ... LED flash is used for the main camera Primary camera Lada The primary camera is an 8 Megapixel AF autofocus camera module The module size is 8 5 mm x 8 5 mm x 5 9 mm and it fits into the 18 pin camera socket on the phone The camera module is SMIA profile 2 compliant directly connected to MSM8960 and controlled by the I2C bus Image data is transferred to the MSM8960 for furher processing over CSI ...

Page 153: ...ule high power white flash LEDs are for use as a camera flash and torch The torch has significantly reduced power compared to the image capture flash There is a red LED inside the flash LED module for video privacy indicator 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 Fig...

Page 154: ...either to generate an inertial wake up interrupt signal when a programmable acceleration threshold is exceeded along one of the three axes x y and z or to detect a free fall event Each axis has its own sensor and those can measure positive and negative directions The 3D accelerometer N1140 sensor is connected to MSM via two GPIOS 10 and 67 and the I2C bus Power is provided from VREG _S4_1V8 and VR...

Page 155: ...ibras or magnetized ferromagnetic metals within the phone need to be removed from the 3D data The calibration is done by rotating the phone for a few seconds around its all axes In the Maps application the status of the magnetometer calibration is indicated by the compass color Figure 47 Magnetometer diagram Gyroscope A gyroscope is a device for measuring rotation pitch roll and yaw in a three dim...

Page 156: ...120 BoostMono N2150 along with Audio IC WCD9310 provides the analogue audio output interfaces and MSM8960 provides the digital audio output interface support RM 824 RM 825 RM 826 System Module Page 6 22 NOKIA INTERNAL USE ONLY Issue 2 Copyright 2012 Nokia All rights reserved ...

Page 157: ...al 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 RM 824 RM 825 RM 826 System Module Issue 2 NOKIA INTERNAL USE ONLY Page 6 23 Copyright 2012 Nokia All rights reserved ...

Page 158: ...ial audio inputs are connected to WCD9310 Line_out1 and Line_out3 and it can be enabled disabled by PMIC GPIO19 Figure 51 Internal handsfree IHF speaker diagram Internal microphones Tufnel microphones are used as internal microphones The digital microphones are connected to WCD9310 Codec RM 824 RM 825 RM 826 System Module Page 6 24 NOKIA INTERNAL USE ONLY Issue 2 Copyright 2012 Nokia All rights re...

Page 159: ...ich is used for high quality audio output and to guarantee long playback time for accessory use Vibra Vibra is connected to VIBRA_N and VIBRA_P lines which are connected to N2180 TPA2012D2 Figure 53 Vibra diagram RM 824 RM 825 RM 826 System Module Issue 2 NOKIA INTERNAL USE ONLY Page 6 25 Copyright 2012 Nokia All rights reserved ...

Page 160: ...RS EDGE WCDMA Band I 2100 II 1900 V 850 and VIII 900 LTE B1 B3 B7 B8 B20 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 The transceiver consists of a system RF module which is referred to as the engine a Bluetooth WLAN FM module and a GPS module for use while the engine is operating in either GSM...

Page 161: ...ock diagram Frequency mappings GSM850 frequencies Channel TX Freq MHz RX Freq MHz TX VCO Freq MHz RX VCO Freq MHz 128 824 2 869 2 3296 8 3476 8 190 836 6 881 6 3346 4 3526 4 251 848 8 893 8 3395 2 3575 2 GSM900 frequencies Channel TX Freq MHz RX Freq MHz TX VCO Freq MHz RX VCO Freq MHz 975 880 2 925 2 3520 8 3700 8 37 897 4 942 4 3589 6 3769 6 RM 824 RM 825 RM 826 System Module Issue 2 NOKIA INTER...

Page 162: ...q MHz TX VCO Freq MHz DownlinkCH RX RX Freq MHz RX VCO Freq MHz 9612 1922 4 3844 8 10562 2112 4 4224 8 9750 1950 0 3896 0 10700 2140 0 4280 0 9888 1977 6 3955 2 10838 2167 6 4335 2 WCDMA II 1900 frequencies Uplink CH TX TX Freq MHz TX VCO Freq MHz DownlinkCH RX RX Freq MHz RX VCO Freq MHz 9262 1852 4 3704 8 9662 1932 4 3864 8 9400 1880 0 3760 0 9800 1960 0 3920 0 9538 1907 6 3815 2 9938 1987 6 397...

Page 163: ...9 9 4339 8 LTE B3 frequencies Uplink CH TX TX Freq MHz TX VCO Freq MHz DownlinkCH RX RX Freq MHz RX VCO Freq MHz 19200 1710 0 3420 0 1200 1805 0 3610 0 19575 1747 5 3495 0 1575 1842 5 3685 0 19949 1784 9 3569 8 1949 1879 9 3759 8 LTE B7 frequencies Uplink CH TX TX Freq MHz TX VCO Freq MHz DownlinkCH RX RX Freq MHz RX VCO Freq MHz 20750 2500 0 5000 0 2750 2620 0 5240 0 21100 2535 0 5070 0 3100 2655...

Page 164: ...20 frequencies Uplink CH TX TX Freq MHz TX VCO Freq MHz DownlinkCH RX RX Freq MHz RX VCO Freq 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 RM 824 RM 825 RM 826 System Module 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: ...7 14 RF tuning and testing 7 15 System module 7 15 Phone description 7 15 Cellular RF technical description 7 16 HAC 7 17 WCDMA IV 1700 2100 frequencies 7 17 LTE B2 frequencies 7 17 LTE B4 frequencies 7 17 LTE B5 frequencies 7 18 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 layou...

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: ...50 1900 2100 VIII V II I LTE 1700 2100 700 B4 B17 RM 824 supports HSDPA category 14 with downlink peak data rate up to 21 1 Mbit s in limited use cases RM 824 supports MSC 10 with GSM GPRS Additional features HAC RM 824 supports Hearing Aid Compliancy HAC Sales package Transceiver RM 824 Battery BP 5T USB charger AC 50 Stereo headset WH 208 Connectivity cable CA 190CD Short user guide Product and ...

Page 170: ...WCDMA V 850 869 894 MHz WCDMA IV 1700 2100 2110 2155 MHz WCDMA II 1900 1930 1990 MHz WCDMA I 2100 2110 2170 MHz LTE B2 1900 1930 1990 MHz LTE B4 1700 2100 2110 2155 MHz LTE B5 850 869 894 MHz LTE B17 700 734 746 MHz Diversity antenna Rx frequency band WCDMA V 850 869 894 MHz WCDMA IV 1700 2100 2110 2155 MHz WCDMA II 1900 1930 1990 MHz WCDMA I 2100 2110 2170 MHz LTE B2 1900 1930 1990 MHz LTE B4 170...

Page 171: ... dBm 1 mW 1 W WCDMA VIII 900 50 23 5 dBm 0 01 uW 224 mW WCDMA V 850 50 23 5 dBm 0 01 uW 224 mW WCDMA IV 1700 2100 50 23 5 dBm 0 01 uW 224 mW WCDMA II 1900 50 23 5 dBm 0 01 uW 224 mW WCDMA I 2100 50 23 5 dBm 0 01 uW 224 mW LTE B2 1900 39 23 dBm 0 125 uW 200 mW LTE B4 1700 2100 39 23 dBm 0 125 uW 200 mW LTE B5 850 39 23 dBm 0 125 uW 200 mW LTE B17 700 39 23 dBm 0 125 uW 200 mW EDGE output power EDGE...

Page 172: ...hannel spacing GSM850 200 kHz GSM900 200 kHz GSM1800 200 kHz GSM1900 200 kHz WCDMA VIII 900 200 kHz WCDMA V 850 100 200 kHz WCDMA IV 1700 2100 100 200 kHz WCDMA II 1900 100 200 kHz WCDMA I 2100 200 kHz LTE B2 1900 100 kHz LTE B4 1700 2100 100 kHz LTE B5 850 100 kHz LTE B17 700 100 kHz RM 824 RM 825 RM 826 Service information differences between RM 824 and RM 825 Page 7 8 NOKIA INTERNAL USE ONLY Is...

Page 173: ...LTE B4 1700 2100 and LTE B17 700 Main antenna Rx frequency band GSM850 869 894 MHz EGSM900 925 960 MHz GSM1800 1805 1880 MHz GSM1900 1930 1990 MHz WCDMA VIII 900 925 960 MHz WCDMA V 850 869 894 MHz WCDMA II 1900 1930 1990 MHz WCDMA I 2100 2110 2170 MHz LTE B4 1700 2100 2110 2155 MHz LTE B17 700 734 746 MHz Diversity antenna Rx frequency band WCDMA V 850 869 894 MHz WCDMA II 1900 1930 1990 MHz WCDM...

Page 174: ... 50 23 5 dBm 0 01uW 224 mW WCDMA II 1900 50 23 5 dBm 0 01uW 224 mW WCDMA I 2100 50 23 5 dBm 0 01uW 224 mW LTE B4 1700 2100 39 23 dBm 0 125 uW 200 mW LTE B17 700 39 23 dBm 0 125 uW 200 mW EDGE output power EDGE850 5 27 dBm 3 2 mW 501 mW 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 Number of RF channels GSM850 124 GSM900 174 GSM1800 374 GSM1900 299 WCDMA...

Page 175: ...0 75 WCDMA II 1900 75 WCDMA I 2100 75 LTE B4 1700 2100 62 LTE B17 700 62 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 RM 824 RM 825 RM 826 Service inf...

Page 176: ...e is used together with this jig for RF testing Attenuation values for CA 158RS cable Band Default f MHz RX Att RX Default f MHz TX Att TX GSM 850 881 6 0 2 836 6 0 2 GSM 900 942 4 0 2 897 4 0 2 GSM 1800 1842 8 0 3 1747 8 0 3 GSM 1900 1960 0 0 3 1880 0 0 3 WCDMA I 2140 0 0 4 1950 0 0 3 WCDMA II LTE B2 1960 0 0 3 1880 0 0 3 WCDMA IV 2140 0 0 4 1740 0 0 3 LTE B4 2132 5 0 4 1732 5 0 3 WCDMA V 880 0 0...

Page 177: ...WLAN 0 5 0 1dB 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 Figure 57 PWB markings in RM 824 and RM 825 RM 824 RM 825 RM 826 Service information differ...

Page 178: ...lar RF key components Figure 58 RF key component layout top side RM 824 RM 825 RM 826 Service information differences between RM 824 and RM 825 Page 7 14 NOKIA INTERNAL USE ONLY Issue 2 Copyright 2012 Nokia All rights reserved ...

Page 179: ...ble System module Phone description Key components Function Description Item ref Main PWB 3VT GSM WCDMA B1 WCDMA B5 LTE B5 PA WCDMA I V LTE B5 RM 824 US WCDMA I V RM 824 AT T N7550 RM 824 RM 825 RM 826 Service information differences between RM 824 and RM 825 Issue 2 NOKIA INTERNAL USE ONLY Page 7 15 Copyright 2012 Nokia All rights reserved ...

Page 180: ...GHz and 5 0 GHz The transceiver consists of a system RF module which is referred to as the engine a Bluetooth WLAN FM module and a GPS module for use while the engine is operating in either GSM or WCDMA mode The transceiver consists in one PWB Located on the top side of the PWB it consists of RF BT WLAN and GPS engines The RF module receives and demodulates the radio frequency signals from the bas...

Page 181: ... 2 LTE B2 frequencies Uplink CH TX TX Freq MHz TX VCO Freq MHz DownlinkCH RX RX Freq MHz RX VCO Freq MHz 18600 1850 0 3700 0 600 1930 0 3860 0 18900 1880 0 3760 0 900 1960 0 3920 0 19199 1909 9 3819 8 1199 1989 9 3979 8 LTE B4 frequencies Uplink CH TX TX Freq MHz TX VCO Freq MHz DownlinkCH RX RX Freq MHz RX VCO Freq MHz 19950 1710 0 3420 0 1950 2110 0 4220 0 RM 824 RM 825 RM 826 Service informatio...

Page 182: ... 3296 0 2400 869 0 3476 0 20525 836 5 3346 0 2525 881 5 3526 0 20649 848 9 3395 6 2649 893 9 3575 6 LTE B17 frequencies Uplink CH TX TX Freq MHz TX VCO Freq MHz DownlinkCH RX RX Freq MHz RX VCO Freq MHz 23730 704 0 2816 0 5730 734 0 2936 0 23790 710 0 2840 0 5790 740 0 2960 0 23849 715 9 2863 6 5849 745 9 2983 6 RM 824 RM 825 RM 826 Service information differences between RM 824 and RM 825 Page 7 ...

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: ...mponents 8 10 RF tuning and testing 8 11 System module 8 11 Phone description 8 11 Cellular RF technical description 8 12 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 8 11 Figure 65 RF block diagram 8 12 RM 824 RM 825 RM ...

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: ...supports MSC 10 with GSM GPRS Sales package Transceiver RM 826 Battery BP 5T USB charger AC 50C Stereo headset WH 208 Connectivity cable CA 190CD Short user guide Product and module list Module name Type code Notes System RF module PWB 3VU Main PWB components for RM 826 Main RF characteristics for GSM850 900 1800 1900 and WCDMA VIII V IV II I phones Parameter Unit Cellular system GSM850 EGSM900 GS...

Page 188: ...0 915 MHz WCDMA V 850 824 849 MHz WCDMA IV 1700 2100 1710 1755 MHz WCDMA II 1900 1850 1910 MHz WCDMA I 2100 1920 1980 MHz Output power GSM850 5 33 dBm 3 2 mW 2 W GSM900 5 33 dBm 3 2 mW 2 W GSM1800 0 30 dBm 1 mW 1 W GSM1900 0 30 dBm 1 mW 1 W WCDMA VIII 900 50 23 5 dBm 0 01 uW 224 mW WCDMA V 850 50 23 5 dBm 0 01 uW 224 mW WCDMA IV 1700 2100 50 23 5 dBm 0 01 uW 224 mW WCDMA II 1900 50 23 5 dBm 0 01 u...

Page 189: ...wer 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 WCDMA I 2100 75 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 set...

Page 190: ...t f MHz RX Att RX Default f MHz TX Att TX GSM 850 881 6 0 2 836 6 0 2 GSM 900 942 4 0 2 897 4 0 2 GSM 1800 1842 8 0 3 1747 8 0 3 GSM 1900 1960 0 0 3 1880 0 0 3 WCDMA I 2140 0 0 4 1950 0 0 3 WCDMA II 1960 0 0 3 1880 0 0 3 WCDMA IV 2140 0 0 4 1740 0 0 3 WCDMA V 880 0 0 2 835 0 0 2 WCDMA VIII 942 6 0 2 897 6 0 2 WLAN n a n a 2442 0 0 4 XRS 6 RF cable 0730231 The RF cable is used to connect for exampl...

Page 191: ... 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 Figure 62 PWB markings in RM 826 and RM 824 RM 824 RM 825 RM 826 Service information differences between RM 826 and RM 824 Issue 2 NOKIA INTERNAL USE ONLY Page 8 9 Copyright 2012 Nokia All rights reserved ...

Page 192: ...lar RF key components Figure 63 RF key component layout top side RM 824 RM 825 RM 826 Service information differences between RM 826 and RM 824 Page 8 10 NOKIA INTERNAL USE ONLY Issue 2 Copyright 2012 Nokia All rights reserved ...

Page 193: ... is available System module Phone description Key components Function Description Item ref Main PWB 3VU GSM WCDMA B1 WCDMA B5 PA N7550 WCDMA B2 PA N7500 WCDMA B4 PA N7530 RM 824 RM 825 RM 826 Service information differences between RM 826 and RM 824 Issue 2 NOKIA INTERNAL USE ONLY Page 8 11 Copyright 2012 Nokia All rights reserved ...

Page 194: ...he engine a Bluetooth WLAN FM module and a GPS module for use while the engine is operating in either GSM or WCDMA mode The transceiver consists in one PWB Located on the top side of the PWB it consists of RF BT WLAN and GPS engines The RF module receives and demodulates the radio frequency signals from the base station and transmits the modulated RF signals to the base station It consists of the ...

Page 195: ... MHz RX VCO Freq 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 RM 824 RM 825 RM 826 Service information differences between RM 826 and RM 824 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: ...or BT Bluetooth CBus MCU controlled serial bus connected to UPP_WD2 UEME and Zocus CCP Compact Camera Port CDMA Code division multiple access CDSP Cellular DSP expected to run at low levels CLDC Connected limited device configuration CMOS Complimentary metal oxide semiconductor circuit low power consumption COF Chip on Foil COG Chip on Glass CPU Central Processing Unit CSD Circuit switched data CS...

Page 200: ...ed super twisted nematic GMSK Gaussian Minimum Shift Keying GND Ground conductive mass GPIB General purpose interface bus GPRS General Packet Radio Service GSM Group Special Mobile Global System for Mobile communication HSDPA High speed downlink packet access HF Hands free HFCM Handsfree Common HS Handset HSCSD High speed circuit switched data data transmission connection faster than GSM HW Hardwa...

Page 201: ... Multipoint to point connection NFC Near field communication NTC Negative temperature coefficient temperature sensitive resistor used as a temperature sensor OMA Object management architecture OMAP Operations maintenance and administration part Opamp Operational Amplifier PA Power amplifier PCM Pulse Code Modulation PDA Pocket Data Application PDA Personal digital assistant PDRAM Program Data RAM ...

Page 202: ...NR Signal to noise ratio SPR Standard Product requirements SRAM Static random access memory STI Serial Trace Interface SW Software SWIM Subscriber Wallet Identification Module TCP IP Transmission control protocol Internet protocol TCXO Temperature controlled Oscillator TD SCDMA Time Division Synchronous Code Division Multiple Access Tiku Finnish for Chip Successor of the UPP TX Radio Transmitter U...

Page 203: ...View Finder Vp p Peak to peak voltage VSIM SIM voltage WAP Wireless application protocol WCDMA Wideband code division multiple access WD Watchdog WLAN Wireless local area network XHTML Extensible hypertext markup language Zocus Current sensor used to monitor the current flow to and from the battery RM 824 RM 825 RM 826 Glossary Issue 2 NOKIA INTERNAL USE ONLY Page Glossary 7 Copyright 2012 Nokia A...

Search results

Summary of Contents for RM-824

Reviews:

Related manuals for RM-824

Brands by name

Popular brands

Nokia RM-824, Service Manual

Search results

Summary of Contents for RM-824

Reviews:

Related manuals for RM-824

Brands by name

Popular brands