This document contains the Popeye fault finding charts. Furthermore it includes the
baseband testpoint guide. This document is based on the PIPPI troubleshooting document.
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CCS T echnical DocumentationTroubleshooting Instructions
In this section, fault finding charts are provided for the most common Popeye errors.
NOTE: Since both D200 (UEM) and D400(UPP) is underfilled, they can not be replaced. If either
D200 or D400 is defective, the whole PWB has be discarded.
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CCS T echnical DocumentationTroubleshooting Instructions
Phone is dead
It is assumed that the voltage supplied is 3.6 VDC. The UEM will prevent any functionality what so ever at battery/supply levels below 2.9 VDC
The flash programming can only be done via the pads on the PWB (J100).
In case of Flash failure in FLALI station, problem is most likely related to SMD problems.
Possible failures could be short-circuit of balls under µBGAs (UEM, UPP, FLASH). Missing
or misaligned components.
In flash programming error cases the flash prommer can give some information about a
fault.
The fault information messages could be:
- Phone does not set FBUS_TX line low
Because of the use of uBGA components it is not possible to verify if there is a short circuit in control- and address lines of MCU (UPP) and memory (flash).
Flash prgramming
do not work
Error from prommer:
"Phone doesn't set
FBUS_TX line low"
Yes
J100, R108
Check connection between
pad 1,2 & 3 on J100
and R108
Yes
J409, J410, J411, J412
Voltage level at 1,8VDC
Yes
Try reading MCU ID
with Phoenix.
Reading OK?
Yes
Try reading Flash ID
with Phoenix.
Reading OK?
No
No
No
No
Check :
R108, PWB
Check :
PWB.
Else defective D200*
Check :
PWB.
Else defictive D400*
Check :
Replace D450 / D452
Yes
Reflash phone
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CCS T echnical DocumentationTroubleshooting Instructions
Power does not stay on or phone is jammed
If this kind of failure is presenting itself immediately after FLALI, it is most likely caused
by ASICs missing contact with PWB.
If for some reason the MCU does not service the watchdog register within the UEM, the
operations watchdog will run out after approximately 32 seconds. Unfortunately, the
service routine cannot be measured.
This error can only happen at power up where several self-tests are run. If any of these
test cases fail, the display will show the message: "Contact Service".
The individual test cases are individual so the below line-up of error hunting has no
chronological order. Use common sense and experience to decide which test case to start
error hunting at.
Display shows
"Contact Service"
Yes
AuxDa & UEMInt
SleepX & SleepClk
between UPP & UEM?
TXI/QD&RXI/QD?
SIM interface between
EarDa & MicDa
between
UPP and UEM?
MBUS interface
between
UPP and UEM?
between
UPP and UEM?
UPP & UEM
Key is stucked
No
R205
Check R205
(no short/open-circuit)
Check :
A-cover, Keymat, Lightguide,
PWB.
Check :
PWB.
Else defective D200*
or D400*
Error still present
Flash checksum
ASIC version vs. compilation flag, PMM checksum
PMM validity
Warrenty In formation State
SIM-Lock
Reflash phone
Check :
PWB.
Else defectiveD450 / D452
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CCS T echnical DocumentationTroubleshooting Instructions
The phone does not register to the network, or the phone cannot make a call
If the phone does not register to the network, the fault can be in either BB or RF. Only
few signals can be tested since several signals are 'buried' in one or more of the inner
layers of the PWB.
First of all check that SIM LOCK is not causing the error by using a Test-SIM card and
connect the phone to a tester.
The hardware of the SIM interface from UEM (D200) to the SIM connector (X387) can be
tested without a SIM card. When the power is switched on the phone first check for a
1,8V SIM card and then a 3V SIM card. The phone will try this four times, where after it
will display”Insert SIM card”.
Displayshows:
"Insert SIM Card"
Yes
X387
Verify that phone checks for
1,8V-SIM,and then 3V-SIM
during power-up.
(See illustration below)
Yes
SIM Interface OK
No
Check :
X387, R386, PWB.
Else defective D200*
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CCS T echnical DocumentationTroubleshooting Instructions
SIM-Card rejected
The error ”SIM card rejected” means that the ATR message received from SIM card is corrupted, e.g. data signal levels are wrong. The first data is always ATR and it is sent from
card to phone.
Displayshows:
"SIM Card Rejected"
Yes
X387
VSIM = min. 1,6V(1,8V Card)
VSIM = min. 2,8V(3V Card)
(Seeillustration below)
Yes
X387
ATR data can be seen at
SIM data pin.
Yes
SIM Interface OK
No
No
Check :
R386, PWB.
Else defective D200*
Check :
X387, R386, PWB.
For reference a picture with normal SIM power-up is shown below.
Two types of measurements are used in the following. It will be specified if the measurement type is "RF" or "LF".
•RF measurements should be done with a Spectrum Analyser and a high-frequency 500 ohm passive probe, for example HP54006A. (Note that when measuring with the 500 ohm probe the signal will be around 20 dB attenuated. The
values in the following will have these 20 dB subtracted and represent the real
value seen on the spectrum analyser).
Note that the testjig have some losses which must be taken into consideration when
calibrating the test system.
•LF (Low frequency) and DC measurements should be done with a 10:1 probe and
an oscilloscope. The probe used in the following is 10MOhm/8pF passive probe.
If using another probe then bear in mind that the voltages displayed may be
slightly different.
Always make sure the measurement set-up is calibrated when measuring RF parameters
on the antenna pad. Remember to include the loss in the module repair jig when
realigning the phone.
Most RF semiconductors are static discharge sensitive. So ESD protection must be
taken during repair (ground straps and ESD soldering irons). Mjoelner is moisture sensitive so parts must be pre-baked prior to soldering.
Apart from key-components described in this document there are a lot of discrete components (resistors, inductors and capacitors) for which troubleshooting is done by checking if soldering of the component is done properly and checking if the component is
missing from PWB. Capacitors can be checked for short-circuiting and resistors for value
by means of an ohmmeter, but be aware in-circuit measurements should be evaluated
carefully.
In the following both the name EGSM and GSM900 will be used for the lower band and
both PCN and GSM1800 will be used for the upper band.
General description of the RF circuits
In the following general descriptions different colours are used in the block diagram. The
GSM 900 signal route is shown in red, the GSM1800 route in green and the common signal lines are shown in blue. Signal lines which is common for both
Receiver signal path
The signal from the antenna pad is routed to the RX/TX switch ( Z700). If no control voltage is present at VANT2 and VANT1 the switch works as a diplexer and the GSM900 signal is passed through the RX/TX switch to GSM-RX and the GSM1800 signal is passed to
DCS-RX.
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