Nokia NPM-10 Series Guide

CCS Technical Documentation
NPM-10 Series Transceivers
Issue 1 03/2003 Confidential Nokia Corporation
Troubleshooting Instructions

NPM-10
Troubleshooting Instructions CCS Technical Documentation
Page 2 Nokia Corporation Confidential Issue 1 03/2003

CCS Technical Documentation Troubleshooting Instructions
NPM-10
Issue 1 03/2003 Nokia Corporation Confidential Page 3
Contents Page No
Baseband Testpoints ...................................................................................................... 5
Fault-Finding Charts ....................................................................................................5
Phone is dead ...............................................................................................................6
Flash programming does not work ..............................................................................8
Power does not stay on or phone is jammed ..............................................................10
Display information: "Contact Service" ....................................................................11
Phone does not register onto the network, or the phone cannot make a call .............12
SIM-related faults ......................................................................................................13
Insert SIM card fault ............................................................................................... 13
SIM-Card rejected................................................................................................... 14
Audio-related faults ...................................................................................................15
Charging failure .........................................................................................................17

NPM-10
Troubleshooting Instructions CCS Technical Documentation
Page 4 Nokia Corporation Confidential Issue 1 03/2003

CCS Technical Documentation Troubleshooting Instructions
NPM-10
Issue 1 03/2003 Nokia Corporation Confidential Page 5
Baseband Testpoints
Fault-Finding Charts
In this section, fault-finding charts are provided for the most common NPM-10 errors.
NOTE : Since both D200 (UEM) and D400(UPP) are underfilled, they cannot be replaced. If either
D200 or D400 is defective, the entire PWB has to be discarded.
J420
J425
J417
J418
J414
J402
J404
J408
J406
J407
J412
J413
J405
J415
J411
J409
C226
VR5
C223
VR2
C227
VR3
C224
VR7
C208
VCORE
C206
VANA
C205
VFLASH
HFCM
C157
HEADINT
VPP
FBUS-
TX
MBUS
FBUS-
RX
R161
EARP
R161
EARN
R164
MIC1N
R164
MIC1P
R165
MICB1
C100
VCHARIN
HF
C225
VR6
C222
VR4
C231
VREFRF0
R306
DLIGHT
R310
KLIGHT
R166
MICB2
J150
HOOKINT
SIM
CLK
SIM
RST
VSIM
J410
MBUSR
SIM
I/O
GND
J403
SLEEPX
C218
VIO
J420
FLSCSX
J425
RFCLK
J417
EXTRDX
J418
RLS2CSX
J414
DBUSDA
J402
PURX
J404
SLEEPCLK
J408
CBUSEN
J406
CBUSCLK
J407
CBUSDA
J412
FBUSRX
J409
MBUXTX
J411
FBUSTX
J415
DBUSEN
J405
UEMINT
J413
DBUSCL
J413
DBUSCL
J413
DBUSCL

NPM-10
Troubleshooting Instructions CCS Technical Documentation
Page 6 Nokia Corporation Confidential Issue 1 03/2003
Phone is dead
This means that the phone does not draw any current at all when supply is connected
and/or the power key is pressed.
It is assumed that the voltage supplied is 3.6 VDC. The UEM will prevent any functional-
ity whatsoever at battery/supply levels below 2.9 VDC.

CCS Technical Documentation Troubleshooting Instructions
NPM-10
Issue 1 03/2003 Nokia Corporation Confidential Page 7
Phone is dead
X101
VBAT = 3,6VDC No
Yes
Check :
R317, C310
S300
Pin 1 & 3 is HIGH when
power-key is untouched
Check :
Z261, C261, Z264, C264
Check :
X101
Yes
No
No
J402
PURX = 1,8VDC,
1 sec. after power-key
is pressed
Z261, C261, Z264,
C264
Voltage = 3,6VDC
S300
Pin 1 & 3 is 0VDC(LOW)
when power-key is pressed
J425
26 MHz clock min.
300mVACpp,
probe Cin=10-13 pF/10M
C227
VR3 = 2,78VDC
J404
Sleep-clock is
32.768 kHz, 1,8Vpp
Check :
C227, PWB.
Else defective D200*
Check :
PWB.
Else defective D200*
Check :
B200, C209, C210, PWB.
Else defective D200*
Check :
S300, PWB
Yes
Yes
No
No
Yes
No
Yes
No
Yes
Yes
Check :
C227, PWB.
Else defective D200*
Yes
No
Check :
D450 (Flash).
Else defective D200*

NPM-10
Troubleshooting Instructions CCS Technical Documentation
Page 8 Nokia Corporation Confidential Issue 1 03/2003
Flash programming does not work
The flash programming can only be done via the pads on the PWB (J100).
In case of flash failure in FLALI station, the problem is most likely related to SMD prob-
lems. Possible failures could be short-circuit of balls under µBGAs (UEM, UPP, FLASH), or
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 doesn't set FBUS_TX line low
Because of the use of uBGA components, it is not possible to verify if there is a short cir-
cuit in control- and address lines of MCU (UPP) and memory (flash).

CCS Technical Documentation Troubleshooting Instructions
NPM-10
Issue 1 03/2003 Nokia Corporation Confidential Page 9
Flash programming
does not work
Error from prommer:
"Phone doesn't set
FBUS_TX line low"
J100, R108 Check
connection between
pad 1,2 & 3 on J100
and R108
Check: R108, PWB
Check: PWB,
else defective D200
Check: PWB,
else defective D400
Check: Replace D450
Try reading Flash ID
with Phoenix
Reading OK?
Try reading MCU ID
with Phoenix
Reading OK?
J409, J410, J411,
J412
Voltage level at
1.8VDC
Reflash phone
Yes
No
Yes
No
Yes
No
Yes
No
Yes

NPM-10
Troubleshooting Instructions CCS Technical Documentation
Page 10 Nokia Corporation Confidential Issue 1 03/2003
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.
Power doesn't stay
on or phone is
jammed
J404 Sleep clock =
32.768 kHz, 1.8Vpp
Check: B200, C209,
C210, PWB. Else
defective D200
No
J402 PURX =
1.8VDC, 1 sec. after
power key is pressed
Check: PWB, else
defective D200
No
Yes
UI functionality and
keys react to
pressure?
Check: D450,
keymat, lightguide,
PWB. Else defective
D400
No
J425 26 MHz clock
min. 300mVACpp,
probe Cin=10-13 pF/
10M
Check: C425, C426,
R425, R426, N600
(Mjoelner)
No
Reflash phone
Yes
Yes
Yes

CCS Technical Documentation Troubleshooting Instructions
NPM-10
Issue 1 03/2003 Nokia Corporation Confidential Page 11
Display information: "Contact Service"
This error can only happen at power up where several self-tests run. If any of these test
cases fails, the display will show the message: "Contact Service".
It's individual test cases, so the following list of possible errors has no chronological
order. Use common sense and experience to decide where to begin error hunting.
Display shows
"Contact Service"
EarDa & MicDa
between
UPP and UEM?
Check :
PWB.
Else defective D200*
or D400*
MBUS interface
between
UPP and UEM?
AuxDa & UEMInt
between
UPP and UEM?
Yes
No
SleepX & SleepClk
between UPP & UEM?
Key is stucked
TXI/QD & RXI/QD?
SIM interface between
UPP & UEM
Flash checksum
y ASIC version vs. compilation flag, PMM checksum
y PMM validity
y Warrenty Information State
y SIM-Lock
R205
Check R205
(no short/open-circuit)
Error still present
Reflash phone Check :
PWB.
Else defective D450 (FLASH
)
Check :
A-cover, Keymat, Lightguide,
PWB.

NPM-10
Troubleshooting Instructions CCS Technical Documentation
Page 12 Nokia Corporation Confidential Issue 1 03/2003
Phone does not register onto the network, or the phone cannot make a call
If the phone doesn't 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, check that the SIM LOCK is not causing the error by using a Test-SIM card and con-
necting the phone to a tester.
Phone do not register to
network
or phone cannot make a call
C230, C231
Voltage = ~1,35VDC
All during GSM frame (call mode)
Use TXP on C646 as trigger
Check :
C222,C223, C224, C225,
C226, C227, PWB.
Else defective D200 or D400
*
J608, J609, J610
Check RF serial bus during
GSM-frame :
Logic HIGH = 1,8VDC
Logic LOW = 0VDC
RFBUSCLK (J608),
RFBUSDA (J609),
RFBUSEN1X (J610)
C222, C233, C224, C225,
C226, C227
Voltage = ~2,78VDC
All during GSM frame-
call mode.
Use TXP on C646 as trigger
No
Yes
Check :
PWB.
Else defective D200*
or D400*
Check :
PWB.
Else defective D200*
or D400*
Check :
C230, C231, PWB.
Else defective
D200* or D400*
Yes
No
No
R610, R611
Check analog signals during
GSM-frame (TX slot):
TXIP/N (R610) = 1-1,75VDC
TXQP/N (R611) = 1-1,75VDC
R601, R603
Check analog signals during
GSM-frame (RX slot):
RXIP/N (R601) = 0-1,45VDC
RXQP/N (R603) = 0-1,45VDC
Yes
Yes
No
Check :
R610, R611,PWB.
Else defective D200*
or D400*
No
Check RF
Yes
Phone does not
register to network
or phone cannot
make a call

CCS Technical Documentation Troubleshooting Instructions
NPM-10
Issue 1 03/2003 Nokia Corporation Confidential Page 13
SIM-related faults
Insert SIM card fault
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, whereafter it
will display ”Insert SIM card”.
Display shows :
"Insert SIM Card"
Check :
X387, R386, PWB.
Else defective D200*
X387
Verify that phone checks for
1,8V-SIM, and then 3V-SIM
during power-up.
(See illustration below)
Yes
No
Yes
SIM Interface OK
Check for SIM voltage during power-up
Ch1 : VSIM
Ch2 : RESET Ch3 : CLOCK Ch4 : DATA

NPM-10
Troubleshooting Instructions CCS Technical Documentation
Page 14 Nokia Corporation Confidential Issue 1 03/2003
SIM-Card rejected
The error ”SIM card rejected” means that the ATR message received from 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.
For reference a picture with normal SIM power-up is shown below.
Display shows :
"SIM Card Rejected"
Check :
R386, PWB.
Else defective D200*
X387
VSIM = min. 1,6V(1,8V Card)
VSIM = min. 2,8V(3V Card)
(See illustration below)
Yes
No
Yes
SIM Interface OK
X387
ATR data can be seen at
SIM data pin.
Check :
X387, R386, PWB.
No
Yes
Normal SIM power-up sequence
Ch1 : VSIM
Ch2 : RESET Ch3 : CLOCK Ch4 : DATA

CCS Technical Documentation Troubleshooting Instructions
NPM-10
Issue 1 03/2003 Nokia Corporation Confidential Page 15
Audio-related faults
Earpiece do not work
Check :
R386, PWB.
Else defective D200*
No
Defective D200*
Z150, R161
Check Z150, R161 is
working correctly
(no short/open-circuit)
Replace :
Earpiece
Yes
Error still present
Microphone do not work and
the isn't any mechanical
problem
Check :
R165, C168, PWB.
Else defctive D200*
No
Error still present
R165
Check voltage level on
R165 towards UEM (bias)
= 2,1V
Replace :
C103 and/or Z100
Yes
Replace :
System Connoctor
C103, Z100
Check C103, Z100 is
working correctly
(no short/open-circuit)
No
R153
Check voltage level on
R153 towards mic-lines (bias)
= 1,0V - 1,4V
Check :
R153, R157,C151, C152,
C153, C154, PWB.
No
Earpiece does not
work
Microphone does
not work and there
isn't any mechanica
l
problem

NPM-10
Troubleshooting Instructions CCS Technical Documentation
Page 16 Nokia Corporation Confidential Issue 1 03/2003
Headset earpiece do not
work and the isn't any
mechanical problem
Replace :
C183 and/or Z102
Defective D200*
R183, Z102
Check R183, Z102 is
working correctly
(no open-circuit)
No
Headset microphone do not
work and the isn't any
mechanical problem
Replace :
C183 and/or Z102
Defective D200*
R166
Check voltage level on R166
towards UEM (bias) = 2,1V No
R152, R165, R168,
C155, C156, C172,
C170, C173, C174,
Z101
Check XMIC line to UEM
(D200)
Check :
R166, R151, C171
R151
Check voltage level on R151
towards UEM (bias)
= 1,0V - 1,4V
No
Yes
Yes
Error still present
Replace :
Defective component
No
Headset earpiece
does not work and
there isn't any
mechanical problem
Headset microphone
does not work and
there isn't any
mechanical problem

CCS Technical Documentation Troubleshooting Instructions
NPM-10
Issue 1 03/2003 Nokia Corporation Confidential Page 17
Charging failure
Phone is OFF - battery is
completely empty
(<=3,1VDC)
and no current from
charger when connected
Check :
F100, L100, V101, C100,
R200, System-connector.
L100
VCHAR > 2,1VDC No
Defective D200*
Yes
Phone is ON or OFF - battery
nominal voltage (~3,6VDC)
and no current from
charger when connected
Check :
F100, L100, V101, C100,
R200, System-connector.
L100
VCHAR > 3,6VDC No
Defective
D200 or D400*
Yes

NPM-10
Troubleshooting Instructions CCS Technical Documentation
Page 18 Nokia Corporation Confidential Issue 1 03/2003
Display info when
charger is connected :
"Not charging"
Check :
X101, R202, R206, C240.
R206
Voltage on R206 towards
D200 is ~0,8VDC
when power is connected.
(BSI must be 75K)
No
Check :
PWB
Yes
R207
Voltage (use scope) on R207
towards D200 is ~0,9VDC at
peak.
(BTEMP must be 47K)
Check :
X101, R202, R207, C220.
No
R200
Voltage on R200 towards
D200 same as VBAT voltage
Check :
R200, PWB.
Else defective D200*
R200
Voltage rises slowly on
R200 towards D200 when
charger is connected.
Check :
PWB.
Else defective D200*
No
No
Yes
Yes
Yes