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Nokia Customer Care RH-37 Series Transceivers

6(a) - Baseband Troubleshooting Instructions

Issue 1 07/04

2004 Nokia Corporation Company Confidential

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RH-37 6(a) - BB Troubleshooting Instructions

Nokia Customer Care

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Nokia Customer Care Table of Contents

RH-37 6(a) - BB Troubleshooting Instructions

Page No Test Points.................................................................................................................................................. 5 Troubleshooting........................................................................................................................................ 6 Top level flow 1 ..................................................................................................................................... 6 Top level flow 2 ..................................................................................................................................... 7 Phone is dead 1 ..................................................................................................................................... 8 Phone is dead 2 ..................................................................................................................................... 9 Flash faults 1 .......................................................................................................................................10 Flash faults 2 .......................................................................................................................................11 Phone is jammed 1 .............................................................................................................................12 Phone is jammed 2 .............................................................................................................................14 Charger ..................................................................................................................................................15 Xpress on Grip LEDs ...........................................................................................................................16 SIM Card ...............................................................................................................................................17 Audio faults 1 ......................................................................................................................................18 Audio faults 2 ......................................................................................................................................19 Audio faults 3 ......................................................................................................................................20 Audio faults 4 ......................................................................................................................................21 Earpiece .................................................................................................................................................22 Display faults 1 ...................................................................................................................................23 Display faults 2 ...................................................................................................................................24 Keypad faults 1 ...................................................................................................................................25 Keypad faults 2 ...................................................................................................................................26 Camera faults 1 ...................................................................................................................................27 Camera faults 2 ...................................................................................................................................28 Self test .................................................................................................................................................29 Functional cover interface ...............................................................................................................30

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RH-37 6(a) - BB Troubleshooting Instructions

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RH-37 6(a) - BB Troubleshooting Instructions

Test Points

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Troubleshooting
Top level flow 1
TOP

Phone is totally dead?

Yes

Phone is dead

No
Flash programming does not work?

Yes

Flash faults

No

Phone does not start up or phone is jammed?

Yes

Phone is jammed

No
Charging does not work?

Yes
Charger

XPress on Grip LEDs do not work?

Yes

XPress on Grip LEDs

No

TOP2

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RH-37 6(a) - BB Troubleshooting Instructions

Top level flow 2

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Phone is dead 1
Phone is dead

Is VBAT=3.7VDC (meas. on X2000)?

No

Failure in VBAT line, check: X2000

Yes

Is voltage =3,7VDC at L2200 and C2239

No

Check: L2200 and C2239

Yes

Is Pin 1 on S2419 "high" when power key is not pressed?

No

Check R2423, C2402

Yes

Is Pin1 on S2419=0VDC when power key is pressed?

No

Check S2419, PWB

Yes

Dead2

Retest

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RH-37 6(a) - BB Troubleshooting Instructions

Phone is dead 2

Dead2

Is Sleep CLK on J2802 = 32.8kHz, 1.8Vpp?

No

Check: B2200, C2241, C2210, PWB then replace D2200

Yes

See Waveform 1

Is PURX=1.8VDC on J2800 1sec. after power key is pressed?

No

Replace D2200, PWB

Yes

Waveform 1

Is VR3=2.78VDC seen at C2234?

No

Check C2234 then replace D2200, PWB

Yes

Is there a 26MHz clock (typ) 850mVpp at R2902?

No

Check R2902, C2902

Waveform 2
Yes See Waveform 2

Phone is Jammed

Retest

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RH-37 6(a) - BB Troubleshooting Instructions

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Flash faults 1
Flash faults

Does the phone set the Fbus TXD at J2809 line high after the startup?

Yes

Measure BSI pulse during Flash programming. Is it OK?

No

No

Yes

Check BSI line, X2000, C2001 C2005, R2270, C2270, R2273

Yes

Measure FBUSTX line during Flash programming from testpoint J2809. Is it 1.8V?

No

Change UPP

Change UEM

Does the phone set Fbus TXD line low after the line has been high?

Yes

Change UPP No

Flash faults 2

Retest

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RH-37 6(a) - BB Troubleshooting Instructions

Flash faults 2

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Phone is jammed 1
Phone is jammed

Measure VIO, VCORE, VFLASH1, VANA, VR3 voltages. Are they OK?

No

Check L2200, C2239, BSI/BTEMP lines and VBATT lines

Waveform 3

Yes

Check VBATT1-6, VIO, VCORE, VFLASH1, VANA, VR3 lines. Are they ok?

No

Retest

Yes Measure 32.8kHz Sleep Clk from testpoint J2802. Is it OK?

Check BSI/BTEMP lines. If OK UEM regulators are not working. Change UEM.

No

See Waveform 4

Waveform 4

Yes

Measure 32.8 kHz Sleep Clk from C2241. Is it OK?

No

See Waveform 3

Yes

Change UEM

Check B2200, C2210, C2241.

Goto Part 2

Retest

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RH-37 6(a) - BB Troubleshooting Instructions

P a rt 2

S e e W a v e f o rm 5

Waveform 5
M e a s u re 2 6 M H z R F C lk f ro m J 2 8 1 5 . Is it O K ? Check R2902 and C 2 9 0 2 . If o k change N7500.

Yes

M e a s u re P U R X s ig n a l f ro m te s tp o in t J 2 8 0 0 . Is it 1 .8 V ?

No

Change UEM

Yes

Jam m ed 2

R e te s t

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Phone is jammed 2
Jammed 2

Waveform 6
Phone shutsdown after 30sec?
Measure watchdog signal CBUSDA from testpoint J2805. Is it ok?

Yes

No

No

Waveform 7

Change UPP See Waveform 6

Measure DBUSClk 13MHz signal from testpoint J2811. Is it OK?

No

See Waveform 7 Yes
Measure FBUSRX signal during phone info read from testpoint J2810. Is it OK?

Waveform 8
No

No Check phone info. Is it OK? Change UEM
Measure FBUSTX signal during phone info read from testpoint J2809. Is it OK?

No

Yes See Waveform 8

Yes

Retest

Change UEM

Change UPP

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RH-37 6(a) - BB Troubleshooting Instructions

Charger
Charger

Connect charger (ACP-7E)

If charging does not work, the cause might be faulty or no calibration of BB. Therefore the calibration should be checked if the procedures in the flow chart do not help.

Does Battery bar scroll?

No

Does the display show "Not charging"? No

Yes

Check C2004, R2270, R2273 and C2270.

Yes

Measure voltage over (TVS) V2000. Is it >3.0 Vdc?

No

Check FUSE F2000

Yes

Check X2001, C2006, C2007, F2000, L2003 and line.

Read BTEMP value. (compare it to ambient temperature). Is it ~25°C (0319)?

No

Check R2001, C2005 R2274, C2271, R2271, and line.

Yes

Remove (fuse) F2000 and measure current. Is it ~350...390 mA?

No

Change UEM

Yes Retest

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Xpress on Grip LEDs
XPress on Grip LEDs

Set phone in Local mode. Select LED Control from menu Testing using Phoenix. Turn all LEDs on.

Are all LEDs on?

Yes

End

No

Are GENIO 8,11,12,13,21,15,16 and 17 high?

No

Change UPP D2800

Yes Are KLIGHT and KLIGHT2 < 0,5 V ?

No

Change UEMEK D2200

Yes

Check LEDs, transistors V2421- V2425, resistors R2402 - R2419. Change faulty component. The LEDs V2408, V2409, V2410 or V2411 are placed below the shielding frame and repair would be very difficult . Therefore if one of these LEDs is faulty, repair can be considered as uneconomic. Board exchange might be taken into account.

Retest

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RH-37 6(a) - BB Troubleshooting Instructions

SIM Card
SIM card

Insert SIM card faults?

Yes

No Does phone enter LOCAL MODE. OK? Yes No

Check BSI line, X2000, C2004, R2270, C2270, R2273. If OK change UEM.

Measure VSIM voltage from X2700. Is it 3V or 1.8V? Yes

No

Check VSIM line, X2700, C2703, C2219. If ok change R2700. If still wrong VSIM voltage change UEM

Check SIM power Up sequence. Is it OK? Yes

No

Check SIM lines. If OK change R2700. If still fail change UEM.

Change UPP

Retest

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RH-37 6(a) - BB Troubleshooting Instructions

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Audio faults 1
Audio faults

Is HP earpiece working?

No

Try changing earpiece. Is it working now? No

Yes

Yes Set phone in LOCAL mode. Use Phoenix Audio Test. Set EXT IN, HP OUT, LOOP ON

Measure DC offset voltagefrom Earpiece pads. is it ~1.38V to GND? Yes

No

Check L2150, R2151, C2179 and line. If OK change UEM.

Measure MICB2voltage from XMICP pads. Is it ~2.2V

No

Yes

Audio faults 2

Earpiece

Audio faults3

Retest

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RH-37 6(a) - BB Troubleshooting Instructions

Audio faults 2
Audio faults 2

Is HP microphone working

No

Change microphone. Is it working now

Yes

Yes

No

Set phone in LOCAL mode. Use Phoenix Audio Test. Set Hp microphone in, Ext speaker out, Loop On.

Audio faults 3

Measure MICB1 DC voltage from MICP pad, J2430. Is it >1,0VDC Yes No

Check R2153, R2154, C2159, C2171 and line. If OK change UEM. If still fail change UPP

Check R2160, C2152, C2175, R2156, L2153, C2154 and line. If OK change UEME

Retest

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RH-37 6(a) - BB Troubleshooting Instructions

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Audio faults 3
Audio faults 3

Is Ext-ear working

No

Set phone in LOCAL mode. Use Phoenix Audio Test. Set Ext microphone in Ext speaker out, Loop On.

Yes

Is Ext-mic working No

Measure DC volts on speaker pads of X2002, pin 11 - 14. Are they ~0,8V DC (to GND)

Yes

Change UEM

No Yes Set phone in LOCAL mode. Use Phoenix Audio Test. Set Ext microphone in Ext speaker out, Loop On Check L2001, C2020, C2021, C2181, R2175, X2002 and lines. If ok change UEM

Measure DC volts on micp pad of X2002, pin 10. Is it ~2.2 V DC (to GND)

No

Check R2173, C2150, C2176, C2184, R2158, R2171, L2000, C2012, C2013, X2002 and lines. If ok change UEM

Yes

Check R2174, R2162, C2170, C2173 and lines. If ok change UEM Audio faults 4 Retest

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RH-37 6(a) - BB Troubleshooting Instructions

Audio faults 4
Audio faults 4

Is IHF speaker working?

No

Change speaker. Is it working now?

No Set Phone in LOCAL mode. Use Phoenix Audio Test. Set Ext microphone in Ihf speaker out, Loop On.

Yes

Yes

Measure DC volts on speaker pads. Are they ~0.5Vbat (to GND)

Yes

END

No

Check C2164, L2151, L2152, L2154, L2155, R2152, R2155, lines and Vbat. If OK change UEMEK.

Check C2164, C2180. If OK change UEMEK.

Retest

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RH-37 6(a) - BB Troubleshooting Instructions

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Earpiece
2.15 Earpiece

Earpiece

Waveform 9

Connect EXT audio signal 1kHz (sine 300mVpp) to XMICP pad and Ground on XMICN. Set phone in LOCAL mode. Use Phoenix Audio Test. Set Ext microphone in Ext speaker out, Loop On.

Waveform 10
Measure signal from external earpiece pads, X2002, pin 11 - 14. Is there a sine vawe?

No

Yes

Mesure sine signal at UEM (R2154 MIC1_P). Use AC coupling. Is it close to 300mVpp?

No

See Waveform 9 Channel 2 Yes

See Waveform 10 Channel 2

Change UPP

Change UEM

Check R2162, C2170, C2173, C2174, L2000, C2012, C2013 and line.

Retest

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RH-37 6(a) - BB Troubleshooting Instructions

Display faults 1
Set phone into local mode. Set VBATT 4.2V. Start display test with Phoenix. Set display and keypad lights on.

Display faults

No

Are the LEDs turned on?

Yes

Check N2400

Display faults 2

Measure signal from C2407. Is it ~16 V? No

Yes

Check R2425 and X2400 pin1,12

Measure voltage from C2424. Is it ~2,4 V? Yes

No

Check control signal line if ok. If yes, change UEM.

Measure supply voltage at C2409. Is it ~4V? Yes

No

Check battery and line.

change N2400

Check L2405. OK?

Yes Change L2405 No Retest

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Display faults 2
Display faults 2

Change UI module. Is it working?

Yes

No Does the display work? No

Check X2400 Yes

Open Phoenix, enter Test mode and goto Testing > Display Test > Select Test > Contrast Test. Set the height and width values to 128 respectively.Then click Send to Phone

Measure VDD (2.78V) and VDDI (1.8V). Is it OK? Yes

No

Is there a clear difference on the Grey scale? Yes

No

Change UEM

Measure RESX, CSX. Is it ~1.8V?

No

Yes

Check X2400 and lines. If OK, change UPP.

End

Retest

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RH-37 6(a) - BB Troubleshooting Instructions

Keypad faults 1
Keypad faults

Is the power key working?

No

Measure voltage from S2419. Is it 3.7V?

No

Check R2423, C2402, C2400, S2419 and line. If OK change UEM

Yes

Yes

Measure voltage from S2419 when power key is pressed. Is it high?

Yes

Check S2419. Is it OK?

Yes

No No

Phone is dead

Keypad faults 2

Phone is jammed

Change S2419

Retest

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Keypad faults 2
Keypad faults 2

Are keys working?

No

Yes

Measure SLEEPX signal from J2801 when key is pressed. Is it 1.8V?

No

Yes

Check lines. If still failing change UPP.

When keypad is pressed, the LEDs are turned on?

No

Yes

Check lines. If still failing change UPP.

END

Display faults

Retest

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RH-37 6(a) - BB Troubleshooting Instructions

Camera faults 1
Change the camera module. Camera works?

Camera

Yes

No Is the viewfinder starting? No Check X1470 solder joints. Are they OK? No Change X1470.

Yes

Measure 1.8 V from C1482 when camera is activated. Is it OK?

No

Check N1470, C1481, C1482, C1483, C1473 and C1474. Change defect part.

Yes

Yes

Measure 2.8 V from C1470 when camera is activated. Is it O K?

No

Check C1470, C1471 and C14721. Change defect part. Does the camera work? No Chanege UEMEK D2200

Yes

Yes

End

Camera faults 2 Retest

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Camera faults 2
Camera 2

Check R1473 and C1475. Are they OK?

No

Change defect part

Yes

Check R1474 and R1475. Are they OK?

No

Change defect part.

Yes

Check R1471 and R1472. Are they OK?

No

Change defect part.

Yes Change the HW accelrator D1470.

Retest camera. Is it OK? Yes

No

Change UPP D2800

Retest End

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Self test

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Functional cover interface
FCI faults

complete phone ?

No

Yes

No
Add FCI PadExtender

FCI PadExtender available ?

Yes

term inal works with reference FC ?

No

Re-test (FCI-ASIP already exchanged) ?

Yes

Change UPP (D450)

No
Phoenix: 1. Set phone into "TEST Mode" 2. Open window "Testing / FCI Test" 3. Select folder "Pin Status" HW : - connect 120 m A load (R=VBat/120m A) at TP J331 (FC_VOUT)

Phoenix: - write PinState VOUT=SDA=Low; SCL=High HW : - m easure voltage level at J331 (FC_VOUT) ; J333 (FC_SCL) J332 (FC_SDA) ; J334 (FC_INT)

J331=J332= ~0V J333=334=~1V8?

No

Yes

YES
Phoenix: - write PinState VOUT=SDA=High; SCL=Low HW : - measure voltage level at J331 ; J333 ; J332 ; J334

J331=VBat-200m Vm ax J332=J334=~1V8 J333=~0V ?

No

Yes
HW : - connect short-circuit to GND at J334 Phoenix: - read PinState

J331=VBat-200mVm ax J332=J334=~1V8 J333=~0V ?

No

Change FCI ASIP (Z310)

Yes

END

END

R ETEST

R ETEST

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