Nokia 2600 Service Manual 06 RH59_60 troubleshoot

Nokia Customer Care

6-T roubleshooting

Instructions

RH-59/60

Nokia Customer Care 6-Troubleshooting Instructions

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Table of Contents Page No

Baseband troubleshooting................................................................................. 7

Baseband test points ......................................................................................... 7

Troubleshooting diagrams ................................................................................. 7

Phone is dead.................................................................................................... 8

Flash programming do not work ........................................................................ 9

Power does not stay on or phone is jammed................................................... 10

Display information : "Contact Service"............................................................ 11

The phone do not register to 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 1: Earpiece and microphone ............................................ 15

Audio related faults 2: Headset........................................................................ 16

Charging failure troubleshooting...................................................................... 17

Charging troubleshooting 2.............................................................................. 18

General RF Troubleshooting............................................................................ 19

RF key component placement ......................................................................... 20

RH-60 Receiver Troubleshooting .................................................................... 23

General instructions for GSM850 RX troubleshooting..................................... 23

Troubleshooting diagram for GSM850 Receiver ........................................... 24

General instructions for RH-60 GSM1900 RX troubleshooting........................ 26

Phoenix commands .......................................................................................26

Troubleshooting diagram for GSM1900Receiver ........................................... 27

Measurement points in the receiver ...............................................................29

RH-60 transmitter troubleshooting................................................................... 31

Measurement points for the transmitter .........................................................31

General instructions for RH-60 GSM TX troubleshooting................................ 32

GSM850 TX output power .............................................................................33

General instructions for RH-60 GSM1900 TX troubleshooting........................ 34

Phoenix commands .......................................................................................34

GSM1900 TX output power ........................................................................... 34

Troubleshooting diagram for GSM1900 TX..................................................... 35

General Instructions for RH-59 GSM900 RX Troubleshooting...................... 37

Troubleshooting chart for GSM900 receiver .................................................. 38

General instructions for GSM1800 RX troubleshooting................................... 40

Troubleshooting Chart for GSM1800Receiver ............................................... 41

Measurement points in the receiver ...............................................................42

RH-59 Transmitter troubleshooting.................................................................. 44

Measurement points for the transmitter .........................................................44

General instructions for RH-59 GSM TX troubleshooting................................ 45

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PCN Transmitter general instructions for PCN TX troubleshooting................. 47

Synthesizer...................................................................................................... 48

26 MHz Reference Oscillator ( VCXO ) ......................................................... 48

VCO ...............................................................................................................48

Troubleshooting diagram for PLL Synthesizer ...............................................49

Phone fails after power on ............................................................................. 50

Measurement points at the VCXO ................................................................. 50

Measurement points at the PLL/VCO ............................................................51

List of Figures

Page No

Fig 1 Phone is dead troubleshooting..................................................................... 6

Fig 2 Flash programming fault .............................................................................. 7

Fig 3 Phone jammed troubleshooting ................................................................... 8

Fig 4 Troubleshooting when Contact Service message seen............................... 9

Fig 5 No call troubleshooting................................................................................. 10

Fig 6 SIM troubleshooting..................................................................................... 11

Fig 7 Signal diagram............................................................................................. 11

Fig 8 Signal diagram............................................................................................. 12

Fig 9 Top: Earpiece troubleshooting, bottom: Microphone troubleshooting.......... 13

Fig 10 Headset troubleshooting............................................................................ 14

Fig 11 Charging troubleshooting 1........................................................................15

Fig 12 Charging troubleshooting 2........................................................................16

Fig 13 RF key components ................................................................................... 18

Fig 14 Supply points at UEM (D200).................................................................... 19

Fig 15 Supply point at Mjoelner (N600)................................................................. 19

Fig 16 GSM850 RF controls window..................................................................... 21

Fig 17 GSM850 Receiver troubleshootingt ...........................................................22

Fig 18 RX850 I/Q signal waveform ....................................................................... 23

Fig 19 GSM1900 RF controls ............................................................................... 24

Fig 20 GSM1900 receiver troubleshooting diagram.............................................. 25

Fig 21 RX1900 I/Q signal waveform .................................................................... 26

Fig 22 RX measurements point at the RX/TX Switch - Z700................................ 27

Fig 23 Measurements points at the RX-Filters – Z601/Z602 ................................ 27

Fig 24 RX I/Q signals, baseband shielding can UEM (D200) ............................... 28

Fig 25 TX measurement points in the PA ( N700 ) shielding can ........................ 29

Fig 26 TX measurement point in Mjolner (N600) shielding can............................ 29

Fig 27 :GSM850 RF controls window....................................................................30

Fig 28 VPCTRL_G & TXC..................................................................................... 31

Fig 29 GSM1900 RF controls screen shot............................................................32

Fig 30 GSM1900 TX troubleshooting.................................................................... 33

Fig 31 GSM900 RF controls window..................................................................... 35

Fig 32 EGSM receiver troubleshooting chart........................................................ 36

Fig 33 RX900 I/Q signal waveform ....................................................................... 37

Fig 34 GSM1800 RF control window ...................................................................38

Fig 35 GSM1800 receiver Troubleshooting chart ................................................. 39

Fig 36 RX1800 I/Q signal waveform ..................................................................... 40

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Fig 37 RX measurements point at the RX/TX Switch - Z700................................ 40

Fig 38 Measurements points at the RX-Filters – Z601/Z602 ................................ 41

Fig 39 RX I/Q Signals, baseband shielding can UEM (D200)............................... 41

Fig 40 TX measuremnet points in the PA ( N700 ) shielding can ........................ 42

Fig 41 TX measurement point in Mjolner (N600) shielding can............................ 42

Fig 42 GSM900 RF controls window ....................................................................43

Fig 43 VPCTRL_G and TXC signal ...................................................................... 44

Fig 44 RF controls window ...................................................................................45

Fig 45 VCXO 26 MHz waveform..........................................................................46

Fig 46 PLL Troubleshooting diagram....................................................................47

Fig 47 Figure 22: Measurement point for VCXO supply ....................................... 48

Fig 48 Figure 23: Measurement point for VCXO output........................................48

Fig 49 Measurement point for PLL........................................................................ 49

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Baseband Troubleshooting

■ Baseband test points

This document contains the Nokia 2600 troubleshooting diagrams. Test points are described and listed in the A3 schematic diagrams.

■ Tr oubleshooting diagrams

In this section, Troubleshooting diagrams is prov ided for the most common problems of the Nokia 2600

NOTE : Since both D200 (UEM) and D400(UPP) are underfilled, they can not be replaced. If either D200 or D400 is defective, the whole PWB has be discarded.

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■ Phone is dead

This means that the phone do not draw any current at all when supply is connected and/or powerkey is pressed.

It is assumed that the voltage supplied is 3.6 VDC. The UEM will pre vent any functionality what so ever at battery/supply levels below 2.9 VDC.

Phone is dead

Yes

X105

VBAT = 3,6VDC

Yes

L260,L261,L262,L263,L264,L265

C260,C261,C262,C263,C264,C265

Voltage = 3,6VDC

Yes

J404

Sleep-clock is

32.768 kHz, 1,8Vpp

Yes

J402

PURX = 1,8VDC,

1 sec. after power-key

is pressed

Yes

C227

VR3 = 2,78VDC

Check :

X105

Check :

L260,L261,L262,L263,L264,L265

C260,C261,C262,C263,C264,C265

Check :

B200, C209, C210, PW B. Else

defective D200*

Check :

PWB.

Else defective D200*

Check :

C227, PWB.

Else defective D200*

Yes

26 MHz clock min. 300mVACpp,

R426

probe Cin=10-13 pF/10M

Yes

Check :

C227, PWB.

Else defective D200*

Check :

D450 (Flash).

Else defective D200*

Figure 1:Phone is dead troubleshooting

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■ Flash programming do not work

The flash programming can only be done via the pads on the PWB (J396). In case of Flash failure in FLALI station, problem is most likely related to SMD problems. Pos-

sible failures could be short-circuit of balls under µBGAs (UEM, UPP, FLASH). 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 circu it in

control- and address lines of MCU (UPP) and memory (flash).

Flash prgramming

do not work

Error fro m p ro mmer:

"Phone doesn't set FBUS_T X line low"

Yes

J396, R108

Check connection between

pad 1,2 & 3 on J396

and R108

Yes

J409, J410, J411, J412

Voltage level at 1,8VDC

Yes

Try re a d in g MCU ID

with Phoenix.

Reading OK?

Yes

Try reading Flash ID

with Phoenix.

Reading OK?

Check :

R108, PW B

Check :

PWB.

Else defective D200*

Check :

PWB.

Else defictive D400*

Check :

Replace D450

Yes

Reflash phone

Figure 2:Flash programming fault

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■ 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 can not be measured.

Power doesn't stay on,

or phone is jammed

J404

Sleep clock = 32.768 kHz,

1.8Vpp

Yes

J402

PURX = 1,8VDC,

1 sec. after power-key i s

pressed

Yes

UI functionality,

and keys react

to pressure?

Yes

R426

26 MHz clock min.

300mVACpp,

probe Cin=10-13 pF/10M

Check :

B200, C209, C210, PW B.

Else defective D200*

Check :

PWB.

Else defictive D200*

Check :

D450, Keymat,

Lightguide, PWB .

Else defective D400*

Check :

C420, C426, R420,

R426, N600(Mjoelner)

Yes

Reflash phone

Figure 3:Phone jammed troubleshooting

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■ Display information : "Contact Service"

This error can only happen at power up where several self-tests is run. If any of these test cases fails the display will show the message: "Contact Service".

It's individual test cases so the below lineup of error hunting's has no chronological order . Use common sense and experience to decide which test case to start error hunting at.

Display shows

"Contact Service"

Yes

EarDa & MicDa

between

UPP and UEM?

MBUS interface

between

UPP and UEM?

AuxDa & UEMInt

between

UPP and UEM?

SleepX & SleepClk

between UPP & UEM?

TXI/QD & RXI/QD?

SIM interface between

UPP & UEM

Check :

PWB.

Else defecti v e D20 0*

or D400*

Key is stucked

Flash checksum

y ASIC version vs. compilation flag, PMM checksum y PMM validity y Warrenty Information State y SIM-Lock

Check :

A-cover, Keymat, Lightguide,

PWB.

Reflash phone

Check :

PWB.

Else defective D450 (FL A S H)

Figure 4:Troubleshooting when Contact Service message seen

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■ The phone do not register to 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 is 'burried' in one or more of the inner layers of the PWB.

First of all check that SIM LOCK is not causing the error by using a Test-SIM card and connect the phone to a tester.

Phone do not register to

network

or phone cannot make a call

C222, C223, C224, C225,

C226, C227

Voltage = ~2,78VDC

All during GSM frame-

call mode.

Use TXP on C646 as trigger

Yes

C230, C231

Voltage = ~1,35VDC

All during GSM frame (call mode)

Use TXP on C646 as trigger

Yes

J421, J422, J423

Check RF serial bus during

GSM-frame :

Logic HIGH = 1,8VDC

Logic LOW = 0V DC

RFBUSC LK (J421),

RFBUSD A (J422),

RFBUSEN1X (J423)

Yes

R601, R603

Check analog signals during

GSM-frame (RX slot):

RXIP/N (R601) = 0-1,45VDC

RXQP/N (R603) = 0-1,45VDC

Check :

C222,C223, C224, C225,

C226, C 227 , P WB .

Else defective D200 or D400*

Check :

C230, C 231 , P WB .

Else defective

D200* or D400*

Check :

Else defective D200*

Check :

Else defective D200*

PWB.

or D400*

PWB.

or D400*

Yes

R610, R611

Check analog signals during

GSM-frame (TX slot):

TXIP/N (R610) = 1-1,75VDC

TXQP/N (R611) = 1-1,75VDC

Yes

Check :

R610, R 611 ,P WB .

Else defective D200*

or D400*

Check RF

Figure 5:No call troubleshooting

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■ 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, whereaf ter it will display ”Insert SIM card”.

Figure 6:SIM troubleshooting

Display shows :

"Insert SIM Card"

Yes

Verify that phone checks for

X387

1,8V-SIM, and then 3V-SIM

during power-up.

(See illustration below)

Yes

SIM Interface OK

Figure 7:Signal diagram

Check :

X387, R386, PWB.

Else defective D200*

Check for SIM voltage during power-up Ch1 : VSIM

Ch2 : RESET

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Ch3 : CLOCK Ch4 : DATA

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SIM-Card rejected

The error ”SIM card rejected” means that the A TR message received from SIM card is corrupted, 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.

Normal SIM power-up sequence Ch1 : VSIM

Ch2 : RESET

Ch3 : CLOCK Ch4 : DATA

Figure 8:Signal diagram

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■ Audio related faults 1: Earpiece and microphone

Figure 9:Top: Earpiece troubleshooting, bottom: Microphone troubleshooting

Earpiece do not work

Replace :

Earpiece

Error still present

Z150, R161

Check Z150, R161 is

working correctly

(no short/open-circuit)

Yes

Defective D200*

Microphone do not work and

the isn't any mechanical

problem

Z100

Check Z100 is

working correctly

(no short/open-circuit)

Replace :

System Connoctor

Check :

R386, PWB.

Else defective D200*

Replace :

Z100

Error still present

R165

Check voltage level on

R165 towards UEM (bias)

= 2,1V

Yes

R153

Check voltage level on

R153 towards mic-lines (bias)

= 1,0V - 1,4V

Check :

R165, C168, PWB. Else defctive D200*

Check :

R153, R157,C151, C152,

C153, C154, PWB.

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■ Audio related faults 2: Headset

Figure 10:Headset troubleshooting

Headset earpiece do not

work and the isn't any

mechanical problem

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R183, Z102

Check R183, Z102 is

working correctly (no open-circuit)

Defective D200*

Headset microphone do not

work and the isn't any

mechanical problem

R166

Check voltage level on R166

towards UEM (bias) = 2,1V

Yes

R151

Check voltage level on R151

towards UEM (bias)

= 1,0V - 1,4V

Yes

Replace :

C183 and/or Z102

Replace :

C183 and/or Z102

Check :

R166, R151, C171

R152, R165, R168, C172, C170, C173,

C174, Z101

Check XMIC line to UEM

(D200)

Error still present

Replace :

Defective component

Defective D200*

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