without the prior written permission of Nokia is prohibited.
Nokia, Nokia Connecting People, and Nokia X and Y are trademarks or registered trademarks of Nokia
Corporation. Other product and company names mentioned herein may be trademarks or tradenames of
their respective owners.
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.
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 made in relation to the accuracy, reliability or contents of this
document. Nokia reserves the right to revise this document or withdraw it at any time without prior notice.
The availability of particular products may vary by region.
IMPORTANT
This document is intended for use by qualified service personnel only.
IF THE DEVICE CAN BE INSTALLED IN A VEHICLE, CARE MUST BE TAKEN ON INSTALLATION IN VEHICLES FITTED
WITH ELECTRONIC ENGINE MANAGEMENT SYSTEMS AND ANTI-SKID BRAKING SYSTEMS. UNDER CERTAIN FAULT
CONDITIONS, EMITTED RF ENERGY CAN AFFECT THEIR OPERATION. IF NECESSARY, CONSULT THE VEHICLE DEALER/
MANUFACTURER TO DETERMINE THE IMMUNITY OF VEHICLE ELECTRONIC SYSTEMS TO RF ENERGY.
•
THE PRODUCT MUST NOT BE OPERATED IN AREAS LIKELY TO CONTAIN POTENTIALLY EXPLOSIVE ATMOSPHERES,
FOR EXAMPLE, PETROL STATIONS (SERVICE STATIONS), BLASTING AREAS ETC.
•
OPERATION OF ANY RADIO TRANSMITTING EQUIPMENT, INCLUDING CELLULAR TELEPHONES, MAY INTERFERE
WITH THE FUNCTIONALITY OF INADEQUATELY PROTECTED MEDICAL DEVICES. CONSULT A PHYSICIAN OR THE
MANUFACTURER OF THE MEDICAL DEVICE IF YOU HAVE ANY QUESTIONS. OTHER ELECTRONIC EQUIPMENT MAY
ALSO BE SUBJECT TO INTERFERENCE.
•
BEFORE MAKING ANY TEST CONNECTIONS, 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 components, modules, screws and insulators are correctly re-fitted after servicing and
alignment.
•
Ensure all cables and wires are repositioned correctly.
•
Never test a mobile phone WCDMA transmitter with full Tx power, if there is no possibility to perform the
measurements in a good performance RF-shielded room. Even low power WCDMA transmitters may disturb
nearby 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.
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.
To replace the covers ESD protection must be applied.
All electronic parts of the product are susceptible to ESD. Resistors, too, can be damaged 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 and local requirements about ESD protection and ESD Protected Area, contact your local
This product is of superior design and craftsmanship and should be treated with care. The suggestions below
will help you to fulfil any warranty obligations and to enjoy this product for many years.
•
Keep the phone and all its parts and accessories out of the reach of small children.
•
Keep the phone dry. Precipitation, humidity and all types of liquids or moisture can contain minerals that
will corrode electronic circuits.
•
Do not use or store the phone in dusty, dirty areas. Its moving parts can be damaged.
•
Do not store the phone in hot areas. High temperatures can shorten the life of electronic devices, damage
batteries, 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 moving parts and prevent proper operation.
•
Use only the supplied or an approved replacement antenna. Unauthorised antennas, modifications or
attachments could damage the phone and may violate regulations governing radio devices.
All of the above suggestions apply equally to the product, battery, charger or any accessory.
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/email.
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
Note: A new battery's full performance is achieved only after two or three complete charge and
discharge cycles!
The battery can be charged and discharged hundreds of times but it will eventually wear out. When the
operating time (talk-time and standby time) is noticeably shorter than normal, it is time to buy a new battery.
Use only batteries approved by the phone manufacturer and recharge the battery only with the chargers
approved by the manufacturer. Unplug the charger when not in use. Do not leave the battery connected to
a charger for longer than a week, since overcharging may shorten its lifetime. If left unused a fully charged
battery will discharge itself over time.
Temperature extremes can affect the ability of your battery to charge.
For good operation times with Li-Ion batteries, discharge the battery from time to time by leaving the product
switched on until it turns itself off (or by using the battery discharge facility of any approved accessory
available 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 carry a spare battery in your pocket or purse. Short-circuiting the terminals may damage the battery
or the connecting object.
Leaving the battery in hot or cold places, such as in a closed car in summer or winter conditions, will reduce
the capacity and lifetime of the battery. Always try to keep the battery between 15°C and 25°C (59°F and 77°
F). A phone with a hot or cold battery may temporarily not work, even when the battery is fully charged.
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.
RM-551; RM-552; RM-559
Nokia X6; L3&4 Service Manual Structure
Nokia X6; L3&4 Service Manual Structure
1 General Information
2 Service Tools and Service Concepts
3 BB Troubleshooting and Manual Tuning Guide
4 RF troubleshooting
5 Camera Module Troubleshooting
6 System Module and User Interface
Glossary
Product features and sales package.....................................................................................................................1–6
Product and module list ........................................................................................................................................1–7
Mobile enhancements............................................................................................................................................1–8
Transceiver general specifications ............................................................................................................... 1–11
Main RF characteristics for GSM850/900/1800/1900 and WCDMA VIII/V/II/I phones.............................. 1–11
Table 3 Data ......................................................................................................................................................... 1–10
Table 5 Music ....................................................................................................................................................... 1–10
This device is a GSM/HSDPA/WCDMA tri-mode handportable monoblock phone with a capacitive touch UI,
integrated GPS (A-GPS OMA SUPL), WLAN and a TV-out connection. RM-551 supports EGSM850/900/1800/1900
and WCDMA850/1900/2100 bands, RM-559 supports EGSM850/900/1800/1900 and WCDMA900/1900/2100
bands, and both devices support CSD/HSCSD, GPRS/EGPRS and WCDMA/HSDPA data bearers. RM-552 supports
EGSM850/900/1800/1900 bands, with CSD/HSCSD and GPRS/EGPRS data bearers.
For WCDMA the maximum bit rate is up to 384 kbit/s for downlink and 384 kbit/s for uplink with simultaneous
CS speech or CS video (max. 64 kbit/s). The HSDPA peak is 3.6 Mbit/s downlink (with limited use cases).
For GPRS/EGPRS networks RM-551/RM-552/RM-559 is a Class B GPRS/EGPRS MSC 32 (5 Rx + 3 Tx, max sum 6)
device, which means a maximum uplink speed of xxx kbit/s and downlink speed of xxx kbit/s. It also supports
Dual Transfer Mode (DTM) for simultaneous voice and packet data connection in GSM/EDGE networks; simple
class A, multi slot class 11, (4 Rx + 3 Tx, max sum 5 ).
This device has a large nHD 3.2”(640 x 360 pixels) colour display (active area xxx mm x xxx mm) with 16
million colors. It also has a 5 megapixel autofocus camera with 4 x digital zoom and an integrated dual LED
flash.
This device is an MMS (Multimedia Messaging Service) enabled multimedia device. The MMS implementation
follows the OMA MMS standard release 1.3. It also supports the Bluetooth 2.0 + EDR standard.
This device uses a S60 5.0 operating system and supports the full Web Browser for S60, which brings desktoplike Web browsing experience to mobile devices.
This device also supports MIDP Java 2.0, providing a good platform for compelling 3rd party applications.
The module should 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-551; RM-552; RM-559
Service Tools and Service Concepts
Table of Contents
Service tools............................................................................................................................................................2–5
Product specific tools........................................................................................................................................2–5
Using SA-131 GPS RF coupler with RM-551, RM-552 and RM-559............................................................2–6
Rework jigs and stencils...................................................................................................................................2–8
General tools................................................................................................................................................... 2–11
Service concepts .................................................................................................................................................. 2–19
POS (Point of Sale) flash concept .................................................................................................................. 2–19
Flash concept with FPS-21............................................................................................................................. 2–20
CU-4 flash concept with FPS-21..................................................................................................................... 2–21
Module jig service concept............................................................................................................................ 2–22
RF testing concept with RF coupler .............................................................................................................. 2–23
Service concept for RF testing and RF/BB tuning........................................................................................ 2–24
GPS testing concept with GPS RF coupler..................................................................................................... 2–25
Bluetooth testing concept with SB-6 ........................................................................................................... 2–26
WLAN functionality testing concept with SB-7 ........................................................................................... 2–27
List of Figures
Figure 2 Base and sledge settings for SA-131 (Note: RM-356 is used in the picture.) ....................................2–7
Figure 3 Frame and coupler settings for SA-131 (Note: RM-356 is used in the picture.)................................2–8
RM-551; RM-552; RM-559
Service Tools and Service Concepts
Service tools
Product specific tools
The table below gives a short overview of service devices that can be used for testing, error analysis, and
repair of product RM-551; RM-552; RM-559. For the correct use of the service devices, and the best effort of
workbench setup, please refer to various concepts.
FS-122Flash adapter
For flashing (also dead phones) with SS-46. RF testing and tuning, and
EM calibration on ATO level with SS-62 (mechanical locking concept),
CU-4 supported.
MJ-232Module jig
MJ-232 is meant for troubleshooting, testing, tuning and flashing on
the engine level (CU-4 supported).
The jig includes an RF interface for GPS, GSM, WCDMA and Bluetooth.
RJ-230Soldering jig
RJ-230 is a soldering jig used for soldering and as a rework jig for the
engine module.
SA-131RF coupler
SA-131 is a RF coupler for GPS testing. It is used together with SS-62.
For more information on how to use the SA-131 with RM-551, RM-552
and RM-559, see Using SA-131 GPS RF coupler with RM-551 RM-552
Figure 3 Frame and coupler settings for SA-131 (Note: RM-356 is used in the picture.)
Rework jigs and stencils
The table below gives a short overview of service devices that can be used for testing, error analysis, and
repair of product RM-551; RM-552; RM-559. For the correct use of the service devices, and the best effort of
workbench setup, please refer to various concepts.
RJ-157Rework jig
RJ-157 is a rework jig used when servicing the Z7540 duplexer. It is
RJ-73Rework jig
RJ-73 is a rework jig used when servicing the N1451 component. It is
used together with the ST-29 rework stencil.
RJ-93Rework jig
RJ-93 is used as a rework jig for the Front End Module (FEM).
This rework jig takes the FEM or power amplifier (PA) module (N7520)
for spreading the soldering paste to the component. Must be used
together with the ST-40 stencil.
ST-29rework stencil
ST-29 is a rework stencil used when servicing the N1451 component.
It is used together with rework jig RJ-73.
ST-40Rework stencil
ST-40 is a rework stencil that is used with the RJ-93 rework jig to
service the Front End Module (N7520).
ST-53Rework stencil
ST-53 is a rework stencil used when servicing the accelerometer
(N6501).
It is used together with the rework jig RJ-166.
RM-551; RM-552; RM-559
Service Tools and Service Concepts
ST-55Rework stencil
ST-55 is a rework stencil used when servicing the Z7540 and Z7541
duplexers. It is used together with the rework jigs RJ-157 and RJ-160.
ST-59Rework stencil
ST-59 is a rework stencil used when servicing the WCDMA PA (N7540)
component. It is used together with rework jig RJ-169.
ST-65Rework stencil
ST-65 is a rework stencil used when servicing the GSM 850/900 TX filter
(Z7503).
This stencil is used together with the rework jig RJ-201.
General tools
The table below gives a short overview of service devices that can be used for testing, error analysis, and
repair of product RM-551; RM-552; RM-559. For the correct use of the service devices, and the best effort of
workbench setup, please refer to various concepts.
AC-35Power supply
Universal power supply for FPS-21; included in the FPS-21 sales
package.
Input 100V…230V 50Hz…60Hz, output voltage of 12 V and output
CU-4Control unit
CU-4 is a general service tool used with a module jig and/or a flash
adapter. It requires an external 12 V power supply.
The unit has the following features:
•
software controlled via USB
•
EM calibration function
•
Forwards FBUS/Flashbus traffic to/from terminal
•
Forwards USB traffic to/from terminal
•
software controlled BSI values
•
regulated VBATT voltage
•
2 x USB2.0 connector (Hub)
•
FBUS and USB connections supported
When using CU-4, note the special order of connecting cables and
other service equipment:
Instructions
1 Connect a service tool (jig, flash adapter) to CU-4.
2 Connect CU-4 to your PC with a USB cable.
3 Connect supply voltage (12 V)
4 Connect an FBUS cable (if necessary).
5 Start Phoenix service software.
Note: Phoenix enables CU-4 regulators via USB when it is
started.
Reconnecting the power supply requires a Phoenix restart.
JXS-1RF shield box
Because the WCDMA network disturbs the RX side testing of the WCDMA
phone and the Tx signal of the WCDMA phone can severely disturb the
WCDMA network, a shield box is needed in all testing, tuning and fault
finding which requires WCDMA RF signal.
The shield box is not an active device, it contains only passive filtering
components for RF attenuation.
PK-1Software protection
key
PK-1 is a hardware protection key with a USB interface. It has the same
functionality as the PKD-1 series dongle.
PK-1 is meant for use with a PC that does not have a series interface.
To use this USB dongle for security service functions please register
the dongle in the same way as the PKD-1 series dongle.
SB-6Bluetooth test and
interface box (sales
package)
The SB-6 test box is a generic service device used to perform Bluetooth
bit error rate (BER) testing, and establishing cordless FBUS connection
via Bluetooth. An ACP-8x charger is needed for BER testing and an
AXS-4 cable in case of cordless interface usage testing .
Sales package includes:
•
SB-6 test box
•
Installation and warranty information
SRT-6Opening tool
SRT-6 is used to open phone covers.
Note: The SRT-6 is included in the Nokia Standard Toolkit.
RM-551; RM-552; RM-559
Service Tools and Service Concepts
SS-102Camera removal tool
The camera removal tool SS-102 is used to remove/attach a camera
module from/to the camera socket.
SS-46Interface adapter
SS-46 acts as an interface adapter between the flash adapter and
FPS-21.
SS-62Generic flash adapter
base for BB5
•
generic base for flash adapters and couplers
•
SS-62 equipped with a clip interlock system
•
provides standardised interface towards Control Unit
•
provides RF connection using galvanic connector or coupler
•
multiplexing between USB and FBUS media, controlled by VUSB
SS-93Opening tool
SS-93 is used for opening JAE connectors.
Note: The SS-93 is included in Nokia Standard Toolkit.
SX-4Smart card
SX-4 is a BB5 security device used to protect critical features in tuning
and testing.
SX-4 is also needed together with FPS-21 when DCT-4 phones are
flashed.
Cables
The table below gives a short overview of service devices that can be used for testing, error analysis, and
repair of product RM-551; RM-552; RM-559. For the correct use of the service devices, and the best effort of
workbench setup, please refer to various concepts.
RM-551; RM-552; RM-559
BB Troubleshooting and Manual Tuning Guide
Table of Contents
Baseband main troubleshooting..........................................................................................................................3–5
Dead or jammed device troubleshooting............................................................................................................3–7
General power checking ........................................................................................................................................3–8
Mass memory troubleshooting.......................................................................................................................... 3–16
USB troubleshooting ........................................................................................................................................... 3–17
Power key troubleshooting................................................................................................................................ 3–20
GPS layout and basic test points................................................................................................................... 3–40
GPS RF test points........................................................................................................................................... 3–40
GPS settings for Phoenix................................................................................................................................ 3–41
Receiver self test ....................................................................................................................................... 3–43
Quick Test window.................................................................................................................................... 3–45
Bluetooth and FM radio ...................................................................................................................................... 3–49
Bluetooth and FM radio introduction........................................................................................................... 3–49
Bluetooth and FM radio component placement ......................................................................................... 3–49
Bluetooth and FM Radio Self Tests ............................................................................................................... 3–51
Bluetooth BER test.......................................................................................................................................... 3–51
Bluetooth and FM radio module troubleshooting ...................................................................................... 3–53
WLAN functionality test using SB-7 and Phoenix........................................................................................ 3–54
WLAN layout and test points......................................................................................................................... 3–55
TV out troubleshooting....................................................................................................................................... 3–63
This device has a capacitive touch screen user interface, which means that the device does not have a
traditional ITU-T keypad. The key components of the touch screen user interface are:
•
Touch window with touch controller (T1021)
•
Proximity sensor
The capacitive touch window is located above the display. It enables finger touch, and it provides tactile
feedback. The tactile feedback is implemented by using the same vibra that is used for alerting. The touch
controller includes drivers and the control logic to measure touch pressure.
The proximity sensor is attached to the upper flex assembly. It sends out a beam of IR light, and then computes
the distance to any nearby objects from the characteristics of the returned (reflected) signal. There is a booth
between the sensor and the touch window, which isolates the IR transmitter from the IR receiver by
preventing the reflection from the touch window surface.
RM-551; RM-552; RM-559
BB Troubleshooting and Manual Tuning Guide
Proximity sensor troubleshooting
Context
Proximity sensor troubleshooting is broken down into two parts. The main purpose of the automatic check
is to identify the fault automatically without any manual checks. If the automatic flow does not provide
enough information, a manual check can be done to narrow down the cause of the fault.
Troubleshooting flow
Figure 13 Proximity sensor troubleshooting - part 1
RM-551; RM-552; RM-559
BB Troubleshooting and Manual Tuning Guide
Figure 18 Touch signals during boot
Figure 19 Touch I2C data when finger is on the screen
Hardware keys troubleshooting
Context
There are two possible failure modes in the keyboard module:
•
One or more keys can be stuck, so that the key does not react when a keydome is pressed. This kind of
failure is caused by mechanical reasons (dirt, rust).
•
Malfunction of several keys at the same time; this happens when one or more rows or columns are failing
(shortcircuit or open connection).
If the failure mode is not clear, start with the Keyboard Test in Phoenix.
RM-551; RM-552; RM-559
BB Troubleshooting and Manual Tuning Guide
Display module troubleshooting
General instructions for display troubleshooting
Context
•
The display is in a normal mode when the phone is in active use.
•
Display is in a partial idle mode when the phone is in the screen saver mode.
•
The operating modes of the display can be controlled with the help of
Table 8 Display module troubleshooting cases
Display blankThere is no image on the display. The display looks
the same when the phone is on as it does when the
phone is off. The backlight can be on in some cases.
Image on the display not correctImage on the display can be corrupted or a part of
the image can be missing. If a part of the image is
missing, change the display module. If the image is
otherwise corrupted, follow the appropriate
troubleshooting diagram.
Phoenix
.
Backlight dim or not working at allBacklight LED components are inside the display
module. Backlight failure can also be in the
connector or in the backlight power source in the
main engine of the phone.
Visual defects (pixel)Pixel defects can be checked by controlling the
display with Phoenix. Use both colours, black and
white, on a full screen.
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 the following table.
Table 9 Pixel defects
ItemWhite dot defectBlack dot
defect
1Defect countsRGBWhite Dot
Total
1111
11
Total
2Combined
defect counts
Not allowed.
Two single dot defects that are within 5 mm of each other should be
interpreted as combined dot defect.
Steps
1. Verify with a working display that the fault is not on the display module itself.
2. Check that the cellular engine is working normally.
iTo check the functionality, connect the phone to a docking station.
iiStart
iii Read the phone information to check that the engine is functioning normally (you should be able to
3. Proceed to the display troubleshooting flowcharts.
Use the Display Test tool in
Phoenix
read the Phone ID).
service software.
Phoenix
to find the detailed fault mode.
Display troubleshooting
Context
Before going to display troubleshooting flow, make sure that the engine is working and starting up correctly.
If the problem is in the engine, go to baseband troubleshooting.
The device has two LED drivers. One of the drivers provides current for the display backlights. The display
backlights can be turned ON (100% max.) and OFF (0%) with PWM.
The other LED driver provides current for the keyboard backlights. The keyboard LEDs can be turned ON/OFF
separately.
RM-551; RM-552; RM-559
BB Troubleshooting and Manual Tuning Guide
Keyboard LEDs and LED driver troubleshooting
Context
The device has one LED driver that provides current for keyboard backlights. Brightness of the LEDs can be
adjusted manually, and can be also turned ON/OFF separately.
Troubleshooting flow
Ambient Light Sensor troubleshooting and re-calibration
Introduction to ALS troubleshooting and re-calibration
If the Ambient Light Sensor (ALS) functionality is inoperative, check the ambient light sensor (N6502) and
change it, if necessary. Also, check the capacitor C6504 (100n).
The ALS components are located at the top of the main PWB.
ALS information is used to control the keypad and display brightness of the phone. Display brightness is
dimmed, when environment lighting is dark. ALS is calibrated in production and can be re-tuned in service
points though not recommended unless calibration coefficient is lost for some reason.
Note: ALS calibration is also required for Light SWAP Engines, because ALS is not factory calibrated
for Light SWAP.
When executing the ALS calibration, a reference phone that includes calibrated ALS is required. The ALS retuning instructions show why the reference phone is needed.
Note: Make sure that you have completed the display and keyboard backlights troubleshooting
before starting the ALS troubleshooting.
There is an Ambient Light Sensor window in the Phoenix Display Test tool, which shows the luminance value.
The correct luminance in darkness is <20 lx, and in an office environment 100-2000 lx.
Note: The luminance value depends heavily on the light source and the angle of the phone against
the light source, so the values above can only be used as a rough guideline. Phoenix has an ambient
light sensor calibration tool for changing the calibration values.
Ambient Light Sensor calibration
Functionality check
Steps
1. Connect the phone to
the ambient light visible to ALS is stable. The light quide of the ALS is located on the upper part of the
phone’s front cover, right next to the secondary camera.
2. Scan product on Phoenix (CTRL+R)
Phoenix
, start the
Phoenix
software, and set the phone (e.g. on the table) so that
RM-551; RM-552; RM-559
BB Troubleshooting and Manual Tuning Guide
3. Choose Testing→Display test.
4. Open the Lights tab, and check the Ambient light sensor check box. Click the Read button in order to get
the reference ambient light value. Cover the sensor and click Read again. When covered, the luminance
reading should be less than after clicking Read without covering the sensor.
5. If the component does not give any reading or the reading does not change when sensor is/is not covered,
replace the part.
Note: In RM-559 the ALS module is located on the upper flex. ALS calibration must always be done
when the upper flex is changed. Also, if the ALS calibration values are lost from the phone, ALS needs
to be recalibrated.
The ALS calibration procedure requires a reference phone with a calibrated ALS.
Calibrating ALS
Steps
1.Connect the phone to
the ambient light visible to ALS is stable. The light quide of the ALS is located on the upper part of the
phone’s front cover, right next to the secondary camera.
2.Scan product on Phoenix (CTRL+R)
Phoenix
, start the
Phoenix
software, and set the phone (e.g. on the table) so that
4.Uncheck the Use default values only check box, click the Read button to get the AD-Count values for
Channel 0 and Channel 1, and write them down.
Note: In the example graphic the reference phone values are: Channel 0=3001 and Channel 1=337
5.Repeat steps 1-4 for the phone to be calibrated.
Note: Make sure the phone to be calibrated is located in the same place as the reference phone was
when luminance reading was taken.
6.Calculate and write down co-efficient value by division:
7.To calibrate ALS, the value in the Reference Level textbox needs to be adjusted for both channels until
the Co-efficient calculated by Phoenix equals the values calculated in step 6. Click Calibrate after each
try (and uncheck the Use default values only check box).
8.Calibration is done when the Co-efficient is equal to the co-efficient value calculated in step 6.
Note: Decimal numbers should be used in the iteration in order to achieve adequate precision (e.g.
200.2455)
9.Use Phoenix (Testing→Display test→Lights tab) to verify the calibration by reading the luminance value
for both the reference phone and calibrated phone.
Note: Remember that the illuminance readings for the reference and calibrated phones must be
done in the same ambient light conditions. If the illuminance values differ more than +- 10%, repeat
the whole ALS calibration procedure.
VBat, ASIC internal LDO voltages, and clocks are available as shown in figure above. In addition to these, the
following GPS signals are available on the test points listed below:
•
U2Tx (J6200, activity on this pin indicates the GPS is operating)
GPS RF test points
The GPS antenna test pads are located on the top side as shown in figure "GPS antenna test pads". Checking
for a connection between these two test points will confirm that the antenna is working correctly, as will
performing a radiated CW test.
RM-551; RM-552; RM-559
BB Troubleshooting and Manual Tuning Guide
Figure 23 GPS antenna test pads
In order to probe GPS RF test points, inject 1575.52 MHz tone @ -50dBm at the GPS antenna test connector
and select Receiver On, then probe the GPS RF test points as shown in the figure below. Compare RF levels
with a known reference phone.
GPS settings for Phoenix
GPS control
Context
Use the following to test GPS using Phoenix.
Steps
1. Start Phoenix service software.
2. From the File menu, select Scan Product and check that the correct product version is displayed.
3. From the Testing menu, select GPS Control. This opens up
figure below, and enables the GPS.
Select Idle to confirm the GPS is enabled and is in idle mode; at this point all clocks should be present,
GPS_En_Reset should be high (1.8V), and Vdd_Dig (1.1V), Vcc_TCXO (2.5V) & Vcc_PLL/VCO (1.35V) should be
present. Turning Receiver Action
on.
Note: These checks are part of GPS basic checks troubleshooting (page 3–47)
On
will turn on all the RF sections of the ASIC and so all LDOs will be
RM-551; RM-552; RM-559
BB Troubleshooting and Manual Tuning Guide
Steps
1. Start Phoenix service software.
2. From the Testing menu, select GPS Control. This opens up
In the
Rx Control
result will be returned and should be within the limits of +- 84Hz.
window, go to the Simple Tests section, select Oscillator Test and click Start. The Offset
GPS Control
dialogue box and enables the GPS.
Figure 26 Simple Tests – Oscillator Test
Receiver self test
Context
Receiver self test can be used to check the correct functionality of the receiver core. For the test, GPS software
configures internal test source to generate synthetic GPS-like data, processing it in the baseband and writing
the results into the channel processor memory. The test compares the data in the channel memory against
the expected value and reports a PASS/FAIL status.
Steps
1. Start Phoenix service software.
2. From the Testing menu, select GPS Control. This opens up
In the
test returns a PASS/FAIL result.
Rx Control
Note: The Oscillator Test should not be run after the Receiver Self Test. This sequence of tests may
cause the Oscillator test to prolong and result in Phoenix timing out. If you are carrying out both of
these tests, run the Oscillator Test first, after which you can run the Receiver Self Test.
window, go to the Simple Tests section, select Receiver Self Test and click Start. The
This test reports the SNR of a CW signal input to the GPS antenna port.
Steps
1. Start Phoenix service software.
2. From the Testing menu, select GPS Control. This opens up
In the
tone at the GPS antenna test connector at a level of -110dBm and click Start.
For Pin = -110dBm and negligible other losses, the expected result ranges are:
•
•
CW Test
Galvanic 29.8dB to 38.1dB
Radiated 25.8dB to 38.1dB
window, ensure the input settings are as shown in the figure below. Inject 1575.52 MHz
Figure 29 GPS Quick Test window for GPS troubleshooting
GPS failure troubleshooting
Context
GPS troubleshooting is broken down into two parts: General GPS failure & GPS basic checks. The GPS failure
troubleshooting flow can be followed and, where applicable, will feed into the basic checks troubleshooting
flow.