Nokia 5110 Service Manual distro
PAMS Technical Documentation
NSE–1 Series Transceivers
Disassembly &
Troubleshooting
Instructions
Original 03/98
NSE–1
PAMS
Disassembly & Troubleshooting Instructions
Technical Documentation
CONTENTS
Disassembly 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trouble Shooting 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Phone is totally dead 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flash programming doesn’t work 6. . . . . . . . . . . . . . . . . . . . . . .
Flash Programming failure (1) 8. . . . . . . . . . . . . . . . . . . . . . .
Flash Programming failure (2) 9. . . . . . . . . . . . . . . . . . . . . . .
Power doesn’t stay on, or phone is jammed 10. . . . . . . . . . . . . .
Display Information: Contact Service 11. . . . . . . . . . . . . . . . . . . .
The phone doesn’t register to the network or phone doesn’t make a call 11
Phone register failure 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SIM card is out of order 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SIM Card failure 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio failure (1) 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio failure (2) 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charger failure 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver Fault (1) 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver Fault (2) 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver Fault (3) 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver Fault (4) 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver Fault (5) 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver Fault (6) 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver Fault (7) 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmitter Fault (1) 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmitter Fault (2) 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmitter Fault (3) 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix A 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix B 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix C 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix D 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page No
Page 2
Original 03/98
PAMS
NSE–1
Technical Documentation
Disassembly
Press strongly towards
arrow direction
Disassembly & Troubleshooting Instructions
Remove battery
Remove dust cap by fingernail
Remove back cover
screws (4 pcs)
Carefully remove A–cover
Note snap fixings !
Remove C–cover
Original 03/98
Page 3
NSE–1
PAMS
Disassembly & Troubleshooting Instructions
Remove UI–module
screws (2 pcs)
Remove UI–module
and frame
Remove engine
module screw (1 pc)
Technical Documentation
Remove engine module
Remove RTC–battery
Remove antenna by
pulling it straight out
Remove microphone
Page 4
Original 03/98
PAMS
NSE–1
Technical Documentation
Trouble Shooting
The following hints should facility finding the cause of the problem when
the circuitry seems to be faulty. This trouble shooting instruction is divided following section.
1. Phone is totally dead
2. Flash programming doesn‘t work
3. Power doesn‘t stay on or the phone is jammed
4. Display information: Contact Service
5. Phone doesn‘t register to the network or phone doesn‘t make a call.
6. Plug in SIM card is out of order ( insert SIM card or card rejected).
7. Audio fault.
8. Charging fault
The first thing to do is carry out a through visual check of the module. En-
sure in particular that:
a) there are not any mechanical damages
b) soldered joints are OK
Disassembly & Troubleshooting Instructions
Original 03/98
Page 5
NSE–1
PAMS
Disassembly & Troubleshooting Instructions
Phone is totally dead
This means that phone doesn’t take current at all when the power switch
is pressed or when the watchdog disable pin (N100 pin 29) is grounded.
Used battery voltage must be higher than 3.0 V. Otherwise the hardware
of CCONT (N100) prevents totally to switch power on.
Phone is totally dead
YES
J232
VBAT is 3.6 V
YES
Voltage at pin 29 of CCONT (N100)
is 3.6 V
YES
NO Failure in VBAT line
Check X101, X102, L103
NO
Faulty circuit N100
Technical Documentation
N100 pin 55 (VBB) 2.8 V
N100 pin 25 (VXO) 2.8 V
when PWR switch is pressed
or watchdog disable pin is grounded
YES
See section: Power Doesn’t Stay On
NO
CCONT (N100) pin 29 0V
when PWR switch is pressed
Faulty circuit N100
Flash programming doesn’t work
In service places flash programming can be done via system connector
X100.
In flash programming error cases the flash prommer can give some information about a fault.
The fault information messages could be:
– MCU doesn’t boot
– Serial clock line failure
– Serial data line failure
– External RAM fault
– Algorithm file or alias ID don’t find
– MCU flash Vpp error
YES
NO
Check R118, X300
Check UI module
Page 6
In cases that the flash programming doesn’t succeed there is a possibility
to check short circuits between the memories and the MCU (MAD2).
This test is useful to do, when the fault information is: MCU doesn’t boot,
Serial clock line failure or Serial data line failure.
Original 03/98
PAMS
NSE–1
Technical Documentation
The test procedure is following:
1. Connect the short circuit wire between the test points J229 and J230.
2. Switch power on
3. If the voltage level in testpoint J225 is 2.8 V (”1”), the interface is OK. If
there is a short circuit, the voltage level in testpoint J225 stays low and
32kHz square wave signal can be seen in the lines which are already tested.
One must be noticed that this test can be found only short circuits, not
open pins.
Also upper data lines (15:8) of flash circuit D210 are not included to this
test.
Disassembly & Troubleshooting Instructions
CCONT pin 54
( PURX )
passed
MAD pin 38
MAD pin 134
J225
( MCUAD0)
( ExtSysResX))selftest
Original 03/98
Page 7
NSE–1
PAMS
Disassembly & Troubleshooting Instructions
Flash Programming failure (1)
Flash programming doesn’t work
YES
If the fault information from the prommer is:
a) MCU doesn’t boot
b) serial data line failure
c) serial clock line failure
connect:
connect the shortcircuit fire from N100 pin 29 to ground (watchdog)
OK
EEPROM (D240) pin 8 (VBB) 2.8 V
J522 (VXO) 2.8 V
YES
NO
Technical Documentation
VBAT is correct
3.6 V
YES
N100 is faulty
check C213, R213
YES
J506 (RFC) 13 MHz
800 mV min
NO
check buffer V705 and
VCXO G600
NO J228 sleep clock(SCLK)
J227 master reset (Purx) = ”1” (2.8 V)
YES
NO
MAD2 (D200) pin 93: 13 MHz sine wave
clock signal: 500 mVpp min.
YES
or over loaded PurX line
Check that following lines are correct:
FCLK (MBUS) line: X100 pin 11 –> D200 pin 112
FTX (fbus_tx) line: X100 pin 13 –> D200 pin 104
FRX (fbus_rx) line: X100 pin 12 –> D200 pin 109
check also pullup and pulldown resistors: R203, R201, R215
GND : X100 pin 14 –> GND
OK
Enable the selftest function of D200 by connecting
shortcircuit between testpoints J229 and J230
Connect an oscilloscope to testpoint J225 and switch
power on
Voltage level rises to ”1” after power on at testpoint J225
YES
square wave 32 kHz
YES
Faulty circuit N100
NO
There is a shortcircuit
somewhere in memory control
lines or MCU address lines or
MCU lower (7:0) data lines
check sleep
NO
clock circuitry
(B100, R154...)
Page 8
There could be open pins in circuits D200 (D211, D240)
If not, the PCB or D200 (D211, D240) is faulty
Original 03/98
PAMS
NSE–1
Technical Documentation
Flash Programming failure (2)
Flash progrmming doesn’t work
If the fault information from the prommer is:
External RAM fault
Check pins of SRAM (D220)
Check control lines of SRAM:
RAMSelX ...
Flash progrmming doesn’t work
Disassembly & Troubleshooting Instructions
YES
YES
YES
If the fault information from the prommer is:
Algorithm file or alias ID don’t find, ID is unknown etc.
Check pins of FLASH (D210)
Check control lines and upper data lines (15:8)
of FLASH: ROM1SelX...
Flash progrmming doesn’t work
YES
If the fault information from the prommer is:
MCU flash Vpp error
YES
Vpp = 3 V in D210 pin 13 (or C212)
YES
Check components C212, R211
OK
NO
YES
Vpp > 4.5 V in testpoint J234
YES
Check UI regulator N201
NO
Check regulator N100
C132, V116, C131
Faulty component D210
Original 03/98
Page 9
NSE–1
PAMS
Disassembly & Troubleshooting Instructions
Technical Documentation
Power doesn’t stay on, or phone is jammed
If this kind of fault has come after flash programming, there are most
probably open pins in ICs.
The soldered joints of ICs: D200 (MAD2), D210 (FLASH), N100
(CCONT), D221 (SRAM) are useful to check at first.
Normally the power will be switched of by CCONT (N100) after 30 seconds, if the watchdog of the CCONT can not be served by software.
The watchdog updating can be seen by oscilloscope at pin 50 (DataselX)
of CCONT.
In normal case there is a short pulse from ”1” –> 0 every 8 seconds.
The power off function of CCONT can be prevented by connecting a short
circuit wire from CCONT pin 29 to ground.
Power doesn’t stay on or phone is jammed
YES
CCONT watchdog is served?
(pin 50 pulses 1 –> 0)
NO
YES
software is able to run
check UI module
If power is switched off
after few seconds, check
BSI and BTEM lines
connect the shortcircuit fire from N100 pin 29 to ground (watchdog)
check C213, R213
YES
J506 (RFC) 13 MHz
800 mV min
NO
check buffer V705 and
VCXO G600
OK
EEPROM (D240) pin 8 (VBB) 2.8 V
J522 (VXO) 2.8 V
YES
J227 master reset (Purx) = ”1” (2.8 V)
YES
NO
MAD2 (D200) pin 93: 13 MHz sine wave
clock signal: 500 mVpp min.
YES
Open pins or faulty circuit:
D200, D210, D221, N100
R215
NO
VBAT is correct
3.6 V
NO J228 sleep clock(SCLK)
square wave 32 kHz
Faulty circuit N100
or over loaded PurX line
YES
YES
N100 is faulty
check sleep
NO
clock circuitry
(B100, R154...)
Page 10
Original 03/98
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