Nokia 6510 Service Manual 9 NPM9TROUBLE
PAMS Technical Documentation
NPM–9 Series Transceivers
Troubleshooting
Instructions
Issue 1 02/2002 Nokia Corporation
NPM–9
Troubleshooting Instructions
PAMS Technical Documentation
CONTENTS
Transceiver Troubleshooting 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Baseband Troubleshooting 3. . . . . . . . . . . . . . . . . . . . . . . . . . . .
PWB Test Points 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Measurement Points 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting steps 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main troubleshooting tree 5. . . . . . . . . . . . . . . . . . . . . . . . . . .
Phone is dead 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flash programming doesn’t work 8. . . . . . . . . . . . . . . . . . . . .
Phone is jammed 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charging fault 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SIM card is out of order (insert SIM card) 13. . . . . . . . . . . . . .
Audio fault 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Display fault 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Keypad fault 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RF Troubleshooting 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RF Key Components 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PWB Test Points 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmitter 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmitter troubleshooting diagram 28. . . . . . . . . . . . . . . . . .
Transmitter signals 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver troubleshooting diagram for GSM900 34. . . . . . . . .
Receiver troubleshooting diagram for GSM1800 35. . . . . . . .
LNA gainstep checking GSM900 & GSM1800 36. . . . . . . . . .
Synthesizer 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Synthesizer troubleshooting diagram 38. . . . . . . . . . . . . . . . .
Synthesizer signals 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FM Radio troubleshooting 41. . . . . . . . . . . . . . . . . . . . . . . . . . .
FM Radio troubleshooting diagram 42. . . . . . . . . . . . . . . . . . .
FM Radio signals 43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page 2
Nokia Corporation
Issue 1 02/2002
PAMS Technical Documentation
Transceiver Troubleshooting
Baseband Troubleshooting
PWB Test Points
NPM–9
Troubleshooting Instructions
FMCLK
FMCTRLDA
FMWREN
FMCTRLCLK
FM RADIO
FMTUNEX
MBUSTX
FBUSRX
DBUSCLK
DBUSDA
UEMINT
PURX
GND
FBUSTX
MBUS
FPS–8
MBUSRX
VPP
FBUSTX
FBUSRX
SLEEPCLK
CBUSDA
CBUSCLK
DBUSENX1
CBUSENX
SLEEPX
EXTRDX
BLACK colored test points are connected to the lines between UEM and
UPP where the logic level is 1.8 V.
RED colored test points are connected to the lines from FPS–8 and have
2.7 V logic level.
BLUE test points are connected to FM radio lines and have 1.8 V logic
level.
Issue 1 02/2002
Nokia Corporation
Page 3
NPM–9
Troubleshooting Instructions
Measurement Points
PAMS Technical Documentation
VOUT
VDD 2.78 V
VDDI 1.8 V
SCLK
SDA
GND
XCS
XRES
Troubleshooting steps
VR5 2.78 V
VR7 2.78 V
VCORE 1.8VVIO 1.8V
VR3 2.78 V
VFLASH2 2.78 V
VR1B 4.75 V
VR1A 4.75 V
VR2 2.78 V
VR6 2.78 V
VR4 2.78 V
VANA 2.78 V VFLASH1 2.78 V
The following hints help to find the problem if the circuitry seems to be
faulty. The instructions are divided into following sections:
1. Phone is totally dead
2. Flash programming doesn’t work
3. Power doesn‘t stay on or the phone is jammed
4. Charging fault
5. Plug in SIM card is out of order (insert SIM card).
6. Audio fault
7. Display is not working
8. Keypad 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
Page 4
Nokia Corporation
Issue 1 02/2002
PAMS Technical Documentation
Main troubleshooting tree
TOP
NPM–9
Troubleshooting Instructions
Phone totally
dead
No
Flash programming
doesn’t work
No
Phone doesn’t
start up or the phone is
jammed
Yes
Yes
Yes
Phone is
dead
Flash
faults
Phone is
jammed
Charging
doesn’t work
TOP 2
Issue 1 02/2002
No
No
Yes
Nokia Corporation
Charger
Page 5
NPM–9
Troubleshooting Instructions
TOP 2
PAMS Technical Documentation
Phone doesn’t read
SIM card
No
Audio faults
No
Display or LED’s
doesn’t work
Yes
Yes
Yes
SIM card
Audio
faults
Display
faults
Page 6
No
Keypad
doesn’t work
No
Yes
Nokia Corporation
Keypad
faults
END
Issue 1 02/2002
PAMS Technical Documentation
Phone is dead
Phone is
dead
NPM–9
Troubleshooting Instructions
Phone current
is zero ?
No
Phone current is < 50mA
No
Phone current is ~ 54 mA
Yes
Yes
No
Is phone
flash programing OK ?
No
Yes
Check X101
solder and
VBATT lines
Phone is
jammed
Flash
faults
Yes
Is phone in LOCAL
MODE ?
Yes
OK retest
Issue 1 02/2002
No
Check BSI line
X101, C241, R203, C109,
Are they OK ?
Nokia Corporation
Yes
Change UEM
R202
No
Repair
Page 7
NPM–9
Troubleshooting Instructions
Flash programming doesn’t work
Flash
faults
PAMS Technical Documentation
The Phone does
not set Flashbus TXD line
high after the startup.
No
Yes
Measure BSI pulse
during Flash
programming.
Is it OK ?
Yes
Measure FBUSTX
line during Flash
programming
from testpoint J411
Is it High (1.8V) ?
Yes
No
No
Check BSI line
X101, C241,
R203, C109,
R202
Check R102
If OK –>
Change UEM
Change UPP
The Phone does not set
Flashbus TXD line low after
the line has been high.
No
Flash faults
page 2
Page 8
Yes
Nokia Corporation
Change UPP
Issue 1 02/2002
PAMS Technical Documentation
Flash faults
page 2
NPM–9
Troubleshooting Instructions
Wrong manufactor ID
and Device ID
No
Is the phone totally dead ?
No
Phone
doesn’t start up
or the phone
is jammed ?
Yes
Yes
Yes
Change
FLASH
Phone is
dead
Phone is
jammed
Retest
Issue 1 02/2002
No
Nokia Corporation
Page 9
NPM–9
Troubleshooting Instructions
Phone is jammed
Phone is
jammed
Measure
VIO, VCORE, FLASH1,
VANA, VR3 voltages.
Are they OK ?
Yes
No
Check VBATT1–6
VIO, VCORE,
FLASH1, VANA,
VR3 lines. Are
they OK?
Yes
PAMS Technical Documentation
Check
No
Z260 – Z265
C260 – C265
BSI / BTEMP
lines and
VBATT lines
Check BSI /
BTEMP lines. If
OK –>
UEM regulators
are not working
Change UEM
Measure
32.6kHz Sleep Clk
from testpoint J404
Is it OK ?
Yes
Measure
13MHz RFClk from R420.
Is it OK ?
Yes
No
No
Measure
32.6kHz Sleep Clk
from B200.
Is it OK ?
Yes
Measure 26MHz RFClk
from C660.
Is it OK ?
Yes
No
No
Check B200,
C209, C210
Change UEM
Check R661,
C661, R660,
C660 if OK
change G660
Check R420,
C420 if OK
change N600
Measure PURX
signal from testpoint J402
Is it high (1.8V)?
Yes
Jammed
Page 2
Page 10
No
Nokia Corporation
Change UEM
Issue 1 02/2002
PAMS Technical Documentation
Jammed
Page 2
NPM–9
Troubleshooting Instructions
Phone shutdown after
30s
No
Measure DBUSClk
1MHz signal
from testpoint J413
Is it OK ?
Yes
Read phone info.
Is it OK ?
Yes No
No
No
Measure watchdog
signal CBUSDA from
testpoint J414
Is it OK ?
Measure FBUSRX
signal during phone info read
from testpoint J412
Is it OK ?
Change UPP
No
Change UEM
Yes
Change LA5
module
Issue 1 02/2002
Yes
Measure FBUSTX
signal during phone info read
from testpoint J411
Is it OK ?
Yes
Retest
Nokia Corporation
No
Change UPP
Change UEM
Page 11
NPM–9
Troubleshooting Instructions
Charging fault
PAMS Technical Documentation
Charger
Battery bar
doesn‘t work (scroll)
Yes
Measure voltage
over (TVS) V100.
Is it > 3.0 Vdc ?
No
No
Connect
(ACP–7)
charger
Retest
Check X100,
V100, C103,
C100, F100,
L100
and line
Yes
Read BTEMP value.
(Compare it to ambient
temperature)
Is it ~ 25 C (0319) ?
Yes
Remove (fuse) F100
and measure current.
Is it ~350...390 mA ?
Yes
No
No
Check
X101,C109
R202, C240,
R203 and line.
Change UEM
Retest
Page 12
Nokia Corporation
Issue 1 02/2002
PAMS Technical Documentation
SIM card is out of order (insert SIM card)
SIM card
Insert SIM card
faults
Yes
Set phone LOCAL mode
Is it OK ?
Troubleshooting Instructions
Check BSI line
No
X101, C241,
R203, C109,
R202.
If OK –>
Change UEM
NPM–9
No
Yes
Check X386
Measure VSIM voltge
from X386
Is it 3V ?
Yes
Check SIM
power UP sequency
(Page 35 figure 19)
Is it OK ?
No
No
Check VSIM line,X386,
C203, C389.
If OK –> Change R388.
If still wrong VSIM
voltage –> Change UEM
Check SIM lines.
If OK –> Change R388.
If still fail –> Change UEM
END
Issue 1 02/2002
Yes
Nokia Corporation
Change UPP
Page 13
NPM–9
Troubleshooting Instructions
Audio fault
Audio
faults
PAMS Technical Documentation
Is earpiece working?
Yes
No
Try change earpiece.
Is it working now ?
No
Set phone in LOCAL mode.
Use Phoenix Audio Test.
Set EXT IN, HP OUT, LOOP ON.
Measure DC
offset voltage
from Earpiece pads.
Is it ~1.38V ?
Yes
Yes
No
Retest
Check L151, C160,
R164 and line.
If OK
–> Change UEM
Page 14
Audio
faults 2
Measure MICB2
voltage from XMICP pads
(L106) .
Is it ~2.2V ?
Earpiece
2
Nokia Corporation
Yes
No
Check L106, C112,
R161, C163, R166,
C165, R167 and
line.
If OK
–> Change UEM
Issue 1 02/2002
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