Nokia PermiCell9 Troubleshooting
PAMS Technical Documentation
TFE–1 model C
TROUBLESHOOTING
INSTRUCTIONS
Original 11/97
TFE–1 model C
PAMS
Troubleshooting Instructions
AMENDMENT RECORD SHEET
Amendment
Number
Date Inserted By Comments
Technical Documentation
Page 2
Original 11/97
PAMS
TFE–1 model C
Technical Documentation
Troubleshooting Instructions
TFE–1 model C TROUBLESHOOTING INSTRUCTIONS
Contents
Introduction Page 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Page 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Baseband Troubleshooting Page 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1. Terminal is Totally Dead Page 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2. Flash Programming Doesn‘t Work Page 7. . . . . . . . . . . . . . . . . . . .
3. Power Doesn‘t Stay On or The Phone is Jammed Page 10. . . . . .
Function of the 32 kHz Clock Oscillator in Test Circumstances Page 10
4. LED Indication or Handset‘s display Information: Contact Service Page 12
5. The Terminal Doesn‘t Register to The Network (no serv)
or Doesn‘t Make a Call Page 14
The States of The DSP after Power On Page 14. . . . . . . . . . . . . . .
6. SIM Card is Out of Order (Insert SIM Card or Card Rejected) Page 16
7. Audio Fault Page 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8. Line Adapter troubleshooting:
Terminal works with handset, but not with device Page 21
9. Immobilizer troubleshooting (in TFE–1 model C) Page 22. . . . . . . .
Switch mode power supply problems Page 23. . . . . . . . . . . . . . . . . . . .
Original 11/97
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TFE–1 model C
PAMS
Troubleshooting Instructions
Introduction
General
The purpose is to define fault block of the module and then find out the broken
component. The trouble shooting diagram has been planned so that the fault,
whatever it is, can be found by as simple measurements as possible.
The flow diagrams give you the overview of the blocks. The purpose is that you
proceed through the flow diagram so that, if your answer is YES for the asked
question, go straight to the next level, but if your answer is NO, you have to go
the subbranch.
Required servicing equipment:
– PC for Service Software
– Power supply (2.0 A)
– Digital multimeter
– Oscilloscope
Technical Documentation
– Spectrum analyzer
– Signal generator
– RF cables
– Modular cable
– RS232/MBUS adapter
– RF measuring chassis
– Termination
The Troubleshooting for TFE–1 model C consists of a series of checks accord-
ing to the following flow diagrams.
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TFE–1 model C
Technical Documentation
Baseband Troubleshooting
The following hints should facility finding the cause of the problem when the circuitry seems to be faulty. This troubleshooting instruction is divided following
section.
1. Terminal is totally dead
2. Flash programming doesn‘t work
3. Power doesn‘t stay on or the terminal is jammed
4. Display information: Contact Service
5. Terminal doesn‘t register to the network or terminal doesn‘t make a call.
6. Plug in SIM card is out of order (insert SIM card or card rejected).
7. Audio fault.
8. Line Adapter trouble shooting
9. Immobilizer troubleshooting
The first thing to do is carry out a through visual check of the module. Ensure in
particular that:
a) there are not any mechanical damages
b) soldered joints are OK
Troubleshooting Instructions
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TFE–1 model C
PAMS
Troubleshooting Instructions
1. Terminal is Totally Dead
Troubleshooting diagram for this fault is represented in following figure. Check
at first that the battery back is OK and it is not empty. This kind of fault has
been limited around the system connector (X103) and the PSCLD (N301).
If the phone is totally dead,
check that the fuse is OK
Voltage level at
PSCLD (N300)
pin 25 is same
as VBA T
YES
Measure voltage
level at PSCLD
(N300) pin 40
NO
Technical Documentation
PSCLD N300
pins 5,21,37...
voltage level is
same as VBAT
NO
Check coils L302,
L303 and the sol–
dered joints of the
connector X120,
fuse F100
YES
Rise up PSCLD
pin 25.
If the DC voltage
is still missing
change N300
NO
Check soldered
joints of V302,
V303, V304, and
around components
The voltage level at
pin 40 (N300) is zero
Rise up PSCLD pin 25.
NO
If the DC voltage is still
missing, change N300
Check that capacitors C311,
C312, C315, C317 and C318
are soldered. Check also soldered joints of N300. If these
things are correct, change
N300
YES
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TFE–1 model C
Technical Documentation
2. Flash Programming Doesn‘t Work
The block diagram for the flash programming is shown in figure 12. The flash
loading is handled via these components. Thus a fault in other components
(DSP, RFI) can not prevent the flash loading.
In error cases, the flash prommer can give some information about a fault.
The fault information messages could be:
– MCU doesn‘t boot
– MCU flash Vpp error
– Serial data line failure
– Serial clock line failure
– External RAM fault
– Algorithm file or alias ID don‘t find
In cases that the the flash programming doesn‘t succeed, there is a possibility
to test the interface between the ASIC and the MCU.
This test is useful to do, when the fault information is: MCU doesn‘t boot or Serial clock line failure.
The test procedure is following:
Troubleshooting Instructions
1. Connect a short circuit wire between the test points J400 and J401.
2. Switch power on.
3. If the reset line of the MCU rises up, the interface is OK. Otherwise the reset
line stays low.
One must be noticed that this test can be found only short circuits, not open
pins. This test indicate also that 32 kHz clock is running because of the test logic is made by using 32 kHz clock oscillator.
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Troubleshooting Instructions
Flash programming doesn‘t work
Output voltages of PSCLD (N300)
are 3.16 V ( VL, VA, VSL )
Master Reset (Purx), PSCLD pin 26
is ”1” ( 3.16 V )
Master clock input, ASIC (D400)
pin 22 is 13 MHz, 1 Vpp, sine
wave with 1 V DC level
Clock signal at the input of MCU, pin 51
is 13 MHz square wave.
YES
YES
YES
Technical Documentation
NO
NO
NO
NO
Check the soldered joints of
N300. If OK, change N300
Rise up pin 26. If the logic
level is still ”0”, check soldered joints of N300. If OK,
change N300.
Check components R400 and C403.
If they are OK, check the VCXO
block. One must remember that the
control signal for the VCXO is taken
from the baseband (see figure 6 )
Check resistor R437. Check the
soldered joints of ASIC. If OK,
change ASIC
YES
NO
MCU Reset input, pin 48 is ”1”
Rise up MCU pin 48. If the logic
level is still ”0”, check the soldered joints of the ASIC. If OK,
YES
change ASIC.
Check that the following lines are correct.
1. Vpp line from X120 pin 7 to FLASH (D430) pin 11
Normal fault information: MCU FLASH Vpp error
2. MBUSRX line from X120 pin 1 to MCU (D420) pin 2
Normal fault information: Serial data line failure
3. MBUSTX line from X120 pin 2 to MCU (D420) pin 1
Normal fault information: MCU doesn‘t boot
4. MBUSCLK line from X120 pin 3 to MCU (D420) pin 3.
Check also R436.
Normal fault information: Serial clock line failure
5. WDDIS line from X120 pin 4 to PSCLD (N300) pin 22
6. GND (X120 pin 15) is connected to ground
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