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