Nokia RM-14 Guide

Nokia Customer Care
ISSUE 1 11/04 Copyright © 2004 Nokia. All Rights Reserved.
6(a) - Baseband
Troubleshooting
6(a) - Baseband Troubleshooting
and Manual Tuning

RM-14
Nokia Customer Care BasebandTroubleshootingandManual
Tuning
2 COMPANY CONFIDENTIAL ISSUE 1 11/04
Copyright © 2004 Nokia. All Rights Reserved.
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ISSUE 1 11/04 COMPANY CONFIDENTIAL 3
Copyright © 2004 Nokia. All Rights Reserved.
RM-14
Baseband Troubleshooting and Manual Tuning Nokia Customer Care
Table of Contents
Page No
Introduction ......................................................................................................... 5
General Failures.................................................................................................. 6
Phone is dead.................................................................................................... 6
Low battery operation time................................................................................. 8
Flash programming does not work..................................................................... 9
Charging failure................................................................................................ 10
Phone does not stay on, or phone is jammed.................................................. 11
Display information: “Contact Service”............................................................. 12
Function Failures .............................................................................................. 14
Camera failure ................................................................................................. 14
Viewfinder working but no picture taken when pressing select-key ............... 16
FM-radio failure................................................................................................ 17
Infrared communication failure......................................................................... 18
SIM failure........................................................................................................ 19
Bluetooth failure............................................................................................... 20
Display failure .................................................................................................. 21
Audio failure..................................................................................................... 22
Uplink or downlink failure ............................................................................... 22
Uplink missing audio signal ............................................................................ 23
Uplink weak audio signal ............................................................................... 24
Uplink distorted audio signal .......................................................................... 25
Uplink TDMA noise ........................................................................................ 26
Downlink missing audio signal ....................................................................... 27
Downlink weak audio signal ........................................................................... 28
Downlink distorted audio signal ..................................................................... 29
Downlink noise in audio signal ....................................................................... 30
Downlink TDMA noise .................................................................................... 31
Various noise problems ................................................................................. 32
BT audio errors .............................................................................................. 33
Vibra errors .................................................................................................... 34
Key failure........................................................................................................ 35
Power key failure ........................................................................................... 35
UI module keys working ................................................................................. 36
Service Tool Concept for RM-14 Baseband Tunings ..................................... 37
Service concept for RM-14 baseband tunings................................................. 38
Baseband Tunings ............................................................................................ 40
Energy management tuning............................................................................. 40
List of Figures

RM-14
Nokia Customer Care BasebandTroubleshootingandManual
Tuning
4 COMPANY CONFIDENTIAL ISSUE 1 11/04
Copyright © 2004 Nokia. All Rights Reserved.
Page No
Fig 1 Phone is dead.............................................................................................. 8
Fig 2 Low battery................................................................................................... 9
Fig 3 Flash programming does not work............................................................... 10
Fig 4 Troubleshooting charging............................................................................. 11
Fig 5 Phone does not stay on, or is jammed......................................................... 12
Fig 6 Display information: “Contact Service”......................................................... 14
Fig 7 No picture..................................................................................................... 15
Fig 8 No picture 2.................................................................................................. 16
Fig 9 Viewfinder working but no picture taken when pressing select-key............. 17
Fig 10 Infrared communication failure................................................................... 19
Fig 11 SIM failure.................................................................................................. 20
Fig 12 Display failure............................................................................................. 22
Fig 13 Uplink or downlink failure ........................................................................... 23
Fig 14 Uplink missing audio signal........................................................................ 24
Fig 15 Uplink weak audio signal............................................................................ 25
Fig 16 Uplink distorted audio signal ...................................................................... 26
Fig 17 Uplink TDMA noise .................................................................................... 27
Fig 18 Downlink missing audio signal ................................................................... 28
Fig 19 Downlink weak audio signal....................................................................... 29
Fig 20 Downlink distorted audio signal.................................................................. 30
Fig 21 Downlink noise in audio signal................................................................... 31
Fig 22 Downlink TDMA noise................................................................................ 32
Fig 23 Various noise problems.............................................................................. 33
Fig 24 BT audio errors .......................................................................................... 34
Fig 25 Vibra errors ................................................................................................ 35
Fig 26 Power key failure........................................................................................ 36
Fig 27 UI module keys working............................................................................. 37

ISSUE 1 11/04 COMPANY CONFIDENTIAL 5
Copyright © 2004 Nokia. All Rights Reserved.
RM-14
Baseband Troubleshooting and Manual Tuning Nokia Customer Care
Introduction
This document describes in overview the different hardware error possibilities for the RM-14
phone.
Not every possible hardware error is described in this document, but only those possible to cor-
rect. Note! Most components are under shielding and therefore not changeable.

RM-14
Nokia Customer Care BasebandTroubleshootingandManual
Tuning
6 COMPANY CONFIDENTIAL ISSUE 1 11/04
Copyright © 2004 Nokia. All Rights Reserved.
General Failures
■ Phone is dead
The phone doesn’t use any current at all when the supply is connected and/or power key is
pressed. It is assumed that the voltage supplied is 3,9Vdc. UEME will prevent any functionality
at battery/supply levels below 2,9Vdc and the software will shut the phone down at 3,1Vdc.

ISSUE 1 11/04 COMPANY CONFIDENTIAL 7
Copyright © 2004 Nokia. All Rights Reserved.
RM-14
Baseband Troubleshooting and Manual Tuning Nokia Customer Care
Figure 1:Phone is dead
Phone is dead
Phone shortcircuit DC
power
Check RF-PA Check SIM Switch
Check VBATT
on C104 ~3.9V Replace SIMgate
Measure voltages on both sides
of pin 12 of x1200 when power key
Measure voltage on L260, L261, L262,
L263, L264, L265 and L206.
Should be ~3.9V.
Failure in VBAT line:
Check X100, L260, L261, L262
L263, L264, L265, L206, C260
C261, C262, C283 and PWB
Sleep clock on J401:~32,768kHz, 1,8Vpp Check B200, C209,C210,
D200 and PWB
Check UI flex and PWB
.
Check C422, R420, N500 (Helgo),
G501 (26MHzXTAL) and PWB
Measure voltage on PURX=1.8Vdc onJ404
or N6031 ~1sec after power key is pressed Check D200 and PWB
Measure voltage on VR3=2,78Vdc on C295pin1 Check D200, C295 and PWB
Verify that system clock is @~26MHz,
min 300mVACpp on C422 pin2 towards
D400(TIKU) with regular probe Cin ~10
-13pF/10M
Check D400 (TIKU) and D401
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
Nok
Ok
*) *)
*) *)
*) *)
*) *)
*)
*)
is pressed. Should be ~0V.
*)
*)
Note! The boxes marked with *)
are not serviceable parts.
The boxes inside the blue lines
are not changeable or measurable!

RM-14
Nokia Customer Care BasebandTroubleshootingandManual
Tuning
8 COMPANY CONFIDENTIAL ISSUE 1 11/04
Copyright © 2004 Nokia. All Rights Reserved.
■ Low battery operation time
Figure 2:Low battery

ISSUE 1 11/04 COMPANY CONFIDENTIAL 9
Copyright © 2004 Nokia. All Rights Reserved.
RM-14
Baseband Troubleshooting and Manual Tuning Nokia Customer Care
■ Flash programming does not work
The flash programming on RM-14 boards is possible via the pads on the PWB and through the
SIM slide.
In flash programming error cases the flash prommer (via Phoenix or Darium) can give some
information about the fault. The fault information messages could be:
• Phone doesn't set Flashbus TXD line high after VCC is switch on.
• External RAM test failed.
These errors are some of the most common errors and based on this, a fault finding diagram
for flash programming is shown below. Various errors can appear from the prommer when
flashing the phone - not all of them can be directly linked to the HW or phone.
Because of the use of uBGA components, it is not possible to verify on the diagram, if there is
a short circuit in control and address/data lines on TIKUEDGE, NOR flash, NAND flash or
SDRAM.
Figure 3:Flash programming does not work
Flash programming does not work
Prommer information is:
Phone dose not set Flashbus TXD line high after VCC is switched on.
Check J386 - resistor R397/R396
Connections ok ? Re-solder \ Replace componet
Replace UEME or TIKU
Replace NOR or NAND flash
Try reading MCU ID with Phoenix
Reading OK ?
Try reading flash ID with Phoenix
Reading OK ?
Flash again
Yes
Yes
Yes
Yes
No
No
No
Prommer information is:
External RAM test failed. (C108)
Check SDRAM orientation and placement.
Placement OK ?
Yes
Replace the SDRAM
Yes
Re-solder \ Replace componet No
Check PWB (if possible) and power lines.
Connections OK ?
Fix the connections if possible.
Else scarp the phone.
Yes
No
Flash again
Yes
*)
*)
*)
*)
*)
*)
*)
*)
*)
Note!
The boxes marked with *) are not serviceable parts!
J39
1
scrap
does
*)
*)
Note!
The boxes inside the blue lines are not changeable
or measurable!

RM-14
Nokia Customer Care BasebandTroubleshootingandManual
Tuning
10 COMPANY CONFIDENTIAL ISSUE 1 11/04
Copyright © 2004 Nokia. All Rights Reserved.
■ Charging failure
Figure 4:Troubleshooting charging
Charging fails and no current
drawn from 'charger'
Measure Vchar voltage on V101.
Is it > 3,0V?
Yes
Check:
X101, F100, C121, V101, C102,
C103 and PWB
NO
Recalibrate charger circuitry and
retest. Did it work ?
Yes
Display information when charger
connected: "Not charging"
Recalibrate charger circuitry and
retest. Did it work ?
Yes
ENDYes
Verify through Phoenix that BSI =
~75kOhm (BL-5C) and BTEMP =
~47kOhm @ roomtemperature
(~25C)
No
Check:
BSI: Battery (BL-5C), C100, R203,
pwb and R206
BTEMP: R100, C101, R202, pwb
and R207
No
Yes
Measure voltage on R200 towards
D200. Should be the same as
Vbat voltage
D200 (UEME) is faultyNO
END
Yes
Yes
Phone should work. If not change
whole engine board
Check:
R200, D200 (UEME) and pwb
No
C107
X1200
BTEMP=~68Ohm @roomtemperat-
ure (~25)
Check:
BSI: R102, C100, R203, Q104, pwb,
SIM SW, R203 and R206
BTEMP:R100. C101, R202, pwb
and R207
*)
*) is SIM holder inserted?
*)
*)
Note!
The boxes marked with *) are not serviceable parts!
Check system connector
Swap the phone,
are not changeable or measurable!
The boxes inside the blue lines

ISSUE 1 11/04 COMPANY CONFIDENTIAL 11
Copyright © 2004 Nokia. All Rights Reserved.
RM-14
Baseband Troubleshooting and Manual Tuning Nokia Customer Care
■ Phone does not stay on, or phone is jammed
If the MCU doesn’t service the watchdog register within the UEME, the operations watchdog
will run out after approximately 32 seconds. It is not possible to measure this service routine.
Figure 5:Phone does not stay on, or is jammed
Phone does not stay on
or is jammed
Verify that system clock is @
~26MHz, min300mVaCpp on
C422 pin2 towards D400 (TIKU)
with regular probe Cin~10-13pF/
10M
Check C422, R420, N500
(Helgo), G501 (26MHzXTAL)
and PWB.
Measure voltage on PURX=
1.8Vdc on N6031 ~1sec
after the power key is pressed.
Swap the phone
Yes
Yes
No
No
UI functionality and keys
react to pressure Check Z300, UI board, keymat, lightguide,
and PWB.
Can extraction of SIM holder
switch off the phone.
Is everything working until
phone shuts down after ~32sec
Replace SIM
gate Retest and if phone
still doesn’t work
change whole engine
board.
Swap the phone
No
No
Yes
Yes
Yes
Yes
No The boxes inside the
blue lines are not
changeable or measurable!
Note!

RM-14
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12 COMPANY CONFIDENTIAL ISSUE 1 11/04
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■ Display information: “Contact Service”
When this error appears in the display itmeans that one or more of the internal baseband tests
has failed. The baseband tests (self tests) are performed each time the phone is powered on.
The self tests are divided into those performed while powering up (Start up tests) and the ones
that can be executed with a PC using Phoenix (Runtime tests). The following Start-up tests are
performed during power up:
UEM CBUS IF TEST
SLEEP X LOOP TEST
AUX DA LOOP TEST
EAR DATA LOOP TEST
TX IDP LOOP TEST
TX IQ DP LOOP TEST
SIM CLK LOOP TEST
SIM IO CTRL LOOP TEST
MBUS RX TX LOOP TEST
BACKUP BATT TEST
RADIO TEST
WARRANTY TEST
PA TEMP TEST
SIM LOCK TEST
PPM VALIDITY TEST
KEYBOARD STUCK TEST
LPRF IF TEST
FLASH CHECKSUM TEST
CAMERA IF TEST
EXT RAM DATA BUS TEST
EXT RAM ADDR BUS TEST
NAND FLASH ID TEST
BT WAKEUP TEST
IR IF_TEST
If all these self tests are passed, the phone will start up.
From Phoenix it’s possible to run all the self tests and the additional “Runtime test”. The test
cases can be seen below.

ISSUE 1 11/04 COMPANY CONFIDENTIAL 13
Copyright © 2004 Nokia. All Rights Reserved.
RM-14
Baseband Troubleshooting and Manual Tuning Nokia Customer Care
Figure 6:Display information: “Contact Service”

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14 COMPANY CONFIDENTIAL ISSUE 1 11/04
Copyright © 2004 Nokia. All Rights Reserved.
Function Failures
■ Camera failure
Figure 7:No picture
No picture
Remove
module
Module
placed
correctly?
Broken
springs etc.
in X900? Reposition module
Change X900
Yes
No No
Yes
Check for
short circuit of
C903, C902
or C291
1.8V
present at
Z901?
Short
circuits? UEME or PWB
FAILURE
Replace
component
Yes
No No
Yes
Check for
short circuit of
C901, C900
or C289
2.7V
present at
Z900?
Short
circuits? UEME or PWB
FAILURE
Replace
component
Yes
No No
Yes
Check for
short circuit of
R900 or R904
26 Mhz
clock
present at
R900?
Short
circuits? PWB or TIKU
FAILURE
Replace
component
Yes
No No
Yes
Check for
short circuit of
C904
1.8V
present at
C904
Short
circuit? PWB or TIKU
FAILURE
Replace
component
Yes
No No
Yes
Continue on
next page
X302
X302
L901
L901
C
905
*) *)
*) Most test points are not accessible unless
by the Return Analysis technicians and for analysis only
shielding cans are cut open. This must ONLY be done

ISSUE 1 11/04 COMPANY CONFIDENTIAL 15
Copyright © 2004 Nokia. All Rights Reserved.
RM-14
Baseband Troubleshooting and Manual Tuning Nokia Customer Care
Figure 8:No picture 2
Check for
short circuit of
R913
Data
present at
R913?
Short
circuits CAMERA or PWB
FAILURE
Replace
component
Yes
No No
Yes
Check for
short circuit of
R906
Clock
present at
R906
Short
circuit? CAMERA or PWB
FAILURE
Replace
component
Yes
No No
Yes
Check for
short circuit of
R902
Clock
present at
R902?
Short
circuit? TIKU or PWB
FAILURE
Replace
component
Yes
No No
Yes
Check for
short circuit of
R901
Data
present at
R901?
Short
circuit? TIKU or PWB
FAILURE
Replace
component
No No
Yes
*) *)
*) *)
*) *)
*) *)
*) Most test points are not accessible unless
shielding cans are cut open. This must ONLY be done
by the Return Analysis technicians and for analysis only

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16 COMPANY CONFIDENTIAL ISSUE 1 11/04
Copyright © 2004 Nokia. All Rights Reserved.
Viewfinder working but no picture taken when pressing select-key
Figure 9:Viewfinder working but no picture taken when pressing select-key
Check
keyboard with
Phoenix
Select key
functional? X300 and
X301 OK? Replace
component
UI- or main
PWB
FAILURE
Yes
No No
Yes
Check for
short circuit of
R906
R906 = 104MHz
clock when
pressing select?
Short
circuit? CAMERA
FAILURE
Replace
component
No No
Yes
Viewfinder working but no picture
taken when pressing select-key
Reflash phone
Yes
rotator flex and
Z300
Z300 and
Flex OK?
*) *)
*) Most test points are not accessible unless
shielding cans are cut open. This must ONLY be done
by the Return Analysis technicians and for analysis only

ISSUE 1 11/04 COMPANY CONFIDENTIAL 17
Copyright © 2004 Nokia. All Rights Reserved.
RM-14
Baseband Troubleshooting and Manual Tuning Nokia Customer Care
■ FM-radio failure
The FM-radio troubleshooting guide is placed in the RF section.

RM-14
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Tuning
18 COMPANY CONFIDENTIAL ISSUE 1 11/04
Copyright © 2004 Nokia. All Rights Reserved.
■ Infrared communication failure
Figure 10:Infrared communication failure
IrDA Failure
Defect PWB
Measure
VBAT at
C350 = 3,7-
4,2V ?
Replace N350
Yes
No
Yes
Yes
Replace
D200
Measure
VFLASH1 at
C351=2,78V
No
Replace
D200
Measure VIO
at
C353=1,80V
No
Yes
Replace
D400
Measure
activity TXD
on N350 pin3
?
No
Yes
C352=1,80V
Defect PWB
Defect PWB
Defect PWB

ISSUE 1 11/04 COMPANY CONFIDENTIAL 19
Copyright © 2004 Nokia. All Rights Reserved.
RM-14
Baseband Troubleshooting and Manual Tuning Nokia Customer Care
■ SIM failure
The hardware of the SIM interface from the UEME (D200) to the SIM connector (X386) can be
tested without a SIM card. When the power is switched on, the phone first checks for a 1,8V
SIM card and then a 3V SIM card. The phone will try this four times, whereafter it will display
"Insert SIM card".
The error ”SIM card rejected” means that the ATR message received from the SIM card is cor-
rupted, e.g. data signal levels are wrong. The first data is always ATR and it is sent from card
to phone.
Figure 11:SIM failure
VSIM
Reset
Data
Clock
SIM Fault
Check SIM
reader X386
Measure
VSIM at
X386. Is it 3V
or 1,8V?
Check SIM power-up
sequence
(picture of 3V sim card)
Measure
VSIM at
C390. Is it
3V?
UEME FAILURE
Replace R388
Yes
No No
Yes
Is used sim a
3,0V or 1,8V
card ?
Replace used
test sim-card
No
Yes
Is not as
picture
Should be as
picture

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20 COMPANY CONFIDENTIAL ISSUE 1 11/04
Copyright © 2004 Nokia. All Rights Reserved.
■ Bluetooth failure
The Bluetooth troubleshooting guide is placed in the RF section.