Nokia NPM-10 Series Guía

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-

MBUS

FBUS-

R161

EARP

R161

EARN

R164

MIC1N

R164

MIC1P

R165

MICB1

C100

VCHARIN

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

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

Check :

C227, PWB.

Else defective D200*

Yes

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

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

J402 PURX =

1.8VDC, 1 sec. after

power key is pressed

Check: PWB, else

defective D200

Yes

UI functionality and

keys react to

pressure?

Check: D450,

keymat, lightguide,

PWB. Else defective

D400

J425 26 MHz clock

min. 300mVACpp,

probe Cin=10-13 pF/

10M

Check: C425, C426,

R425, R426, N600

(Mjoelner)

Reflash phone

Yes

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