Nokia 8210, 8850 Service Manual NSM 23_2

nokia

Service & Analysis Center Europe SACE CC Training Group

Phone doesn´t switch on

-. Check current consumption: Off state 0-1mA, sleep mode 1-4mA, if too high continue with section “low standby / operation mode time".

1. Check connector X101 if bend or soiled.

2. Check Vb 3.6V at C129. If not ok, check L103.

3. Check if PWRONX at S330 drops to 0V during pressing powerswitch. If not ok, check/change S330, R118.

4. Check 32.768kHz at J228, 3.2Vpp squarewave. Ok, go to 6.

5. Check/change B100, R100, R102, R154, C101, C102, C113, change CCONT (N100) if necessary.

6. Check Vbb 2.8V at C107. If not ok, check resistance of line to GND or change CCONT (N100).

7. Check Vxo 2.8V at C152. If not ok, check resistance of line to GND or change CCONT (N100).

8. Check Vref 1.5V at C106. If not ok, check resistance of line to GND or change CCONT (N100).

9. Check SLEEPX 2.8V at J226. If not ok, MAD is faulty in all probability. Swap the phone because MAD is not changeable.

10. Check PURX 2.8V at J227 after pressing powerswitch. If not ok, change CCONT (N100).

11. Check 13MHz Clk-frequency at C213, approx. 800mVpp. If not ok, check values around G830, N505 and V800.

-. Try to flash the phone. If not ok, continue with section “Flash update not possible".

Flash update not possible

-. Check if fault code from prommer is one of the following : A: External RAM failure :

-. Check values at D200, if OK, swap unit, ComboMemory faulty.

B: Algorithm code fail / alias ID missing:

-. Update FPS4 box with latest flash device list, try to update again. If fault persists, check values at D200, if OK, swap the unit,- ComboMemory is faulty.

C: MCU boot failure, serial clock / data line failure

-. Connect “watchdog disable” R118 to GND.

1. Check Vbb 2.8V at C107 and Vxo 2.8V at C152. If not ok, continue with section “phone doesn't switch on".

2. Check SLEEPX 2.8V at J226. If not ok, MAD faulty in all probability. Swap the phone because MAD is not changeable.

3. Check PURX 2.8V at J227. If not ok, change CCONT (N100).

4. Check 13MHz REFCLK at C213, approx. 800mVpp. If not ok, check values around G830, N505 and V800.

5. Check resistance of Mbus/Fbus lines (J101-J103) to GND. Also check R109, R201, R203, R215. If update still not possible: Swap, MAD or PCB should be the reason.

Low standby / operation mode time

-. Check power consumption of phone: off state 0-1mA.

1. Lift L103, current consumption still to high: check C702/703/704 and C754/755. If failure persists, change N702. If current is OK after removing L103: Resolder it: Vb line faulty.

2. In most cases CCONT (N100) is the reason. If fault persists after changing CCONT, probably N101, N220, N310, N401 faulty, also possible that capacitor in Vb line Is faulty (eg C100, C105, C129, C142…).

-. Check current in sleep mode: 1-4mA.

-. Check resistance of output voltage lines of CCONT to GND.

-. Change components in corresponding lines if resistance is not ok. If resistance of lines is ok, but sleep mode current is still too high, change CCONT (N100).

-. Check charging circuit, run energy management calibration. If calibration is not ok, continue with section “Not charging".

-. Calibrate RX / TX values of the phone. If calibration not ok, continue with section “RX / TX faults”. Note that the standby time also depends on network side and the users handling of the phone, eg lights on/off, memory activities, games…

Contact Service

A: MCU ROM Checksum failed:

-. Try to flash the phone. If not ok after flashing, probably ComboMemory faulty, which is not changeable.

B: Ccont Interface failed:

-. Probably broken solderings under CCONT (N100). Replace CCONT (if not underfilled) with µBGA rework machine.

-. If not ok after reworking the CCONT, probably MAD or PCB faulty. Note that it is necessary to run energy management calibration after changing CCONT!

C: Cobba parallel/serial failed:

1. Check Vbb 2.8V at C201 and Vcobba 2.8V at C248

2. Check CobbaClk at J252, probably broken solderings under COBBA (N250). Replace COBBA with µBGA rework machine. If fault remains probably MAD or PCB faulty

D: DSP Alive failed

-. In most of all DSP alive selftest failures MAD is faulty, which is not changeable.

E: Eeprom tune checksum failed

-. Use Wintesla to check if phonedata like Imei, product-code or PSN are corruped If phone data is ok, try to reset the phone. If phone data is not ok or fault remains after reset ComboMemory is faulty in all probability

F: RTC Battery failed

-. First try to charge RTC battery by assembling battery to the phone for 10 to 15 minutes. If fault remains, check contact springs of battery, bend them if nessecary. (see also NSM2 service bulletin 20)

-. In some cases it can be necessary to change CCONT (N100) or CHAPS (N101).

Phone intermittend switches off

1. Check mechanical appearance of connector X101, change if necessary make sure that pads of X101 on PCB are clean.

2. Check amplitude of 32.768kHz at J228, 3.2Vpp squarewave, if not ok, check parts around B100, probably broken solderings under CCONT (N100).

-. Remove CCONT if not underfilled, replace sparepart with µBGA rework machine and run energy management calibration. The same problem may cause N505, because the reference oscillator G830 (26MHz) is divided to 13MHz system clock by Hagar N505.

-. If you suppose broken solderings under Hagar, rework as described above.

CONFIDENTIAL

Baseband part 1

NSM-2/3

System Module RM7/RM7L

1(5)

Version 1.0 Approved

11.10.2000

NSM-3 differences in red

Measurepoint for GND-connected components

R723R723

C862C862

V801V801

C782C782

C788C788

C220C220

C864C864

R723R723

R807R807

C212C212

C760C760

L506L506

L503L503

C863C863

R758R758

C785C785

C805C805

VCOVCO

C802C802

R118R118

V350V350

C116C116

N220N220

J101

C758C758

R756R756

R757R757

C759C759

R711R711

N600N600

R755R755

R712R712

R805R805

G800G800

J102

J103

R211R211

ComboMemoryComboMemory

R751R751

R710R710

R801R801

V360V360

C206C206

C217C217

C209C209

D210D210

C790C790

Z700Z700

C860C860

C783C783

T800T800

C804C804

R802R802

C801C801

C205C205

M300M300

T700T700

R700R700

Z671Z671

C803C803

R704R704

C755C755

R284R284

R283R283

C799C799

C560C560

C550C550

Pwr. AmpPwr. Amp

C741C741

L504L504

V116V116

L752L752

R740R740

C704C704

L103L103

C286C286

R285R285

R284R284

R283R283

L284L284

L283L283

L505L505

C211C211

C281C281

N702N702

C742C742

T740T740

R975R975

C793C793

R800R800

C206C206

C218C218

C204C204

C285C285

R286R286

L284L284

L283L283

L751L751

C108C108

Mad2Mad2

C703C703

R741R741

C561C561

R974R974

C535C535

R564R564

R533R533

C152C152

C131C131

J226

C119C119

C213C213

1111

C754C754

C702C702

C541C541

C670C670

C747C747

R541R541

R744R744

C714C714

R791R791

R532R532

C746C746

R790R790

C557C557

R671R671

C792C792

R792R792

N505N505

HagarHagar

C562C562

C533C533

C564C564

R563R563

R565R565

C534C534

C153C153

C133C133

C106C106

C720C720

C743C743

L553L553

R754R754

R763R763

C733C733

V730V730

C730C730

R732R732

R764R764

R763R763

R732R732

C630C630

L631L631

C631C631

L600L600

C600C600

C601C601

R510R510

C510C510

C531C531

C530C530

C532C532

R530R530

C540C540

C521C521

R546R546

C150C150

C154C154

C151C151

Z670Z670

C761C761

C614C614

C645C645

C163C163

C162C162

R730R730

R731R731

C731C731

T630T630

T600T600

C523C523

C522C522

C520C520

C513C513

C512C512

C511C511

C833C833

R833R833

C830C830

C129C129

C700C700

L510L510

R611R611

GSM+

V800V800

R879R879

C615C615

R834R834

R830R830

R613R613

V904V904

C610C610

R610R610

C613C613

R643R643

C644C644

R645R645

V903V903

R640R640

C643C643

C640C640

C612C612

C611C611

R614R614

V907V907

Z600Z600

C620C620

VCTCXOVCTCXO

C621C621

V905V905

C642C642

L800L800

C834C834

C835C835

C832C832

C831C831

R831R831

C836C836

R832R832

G830G830

C165C165

Z620Z620

PCN

C879C879

CcontCcont

N100N100

R269R269

C248C248

L272L272

L271L271

C291C291

C292C292

N250N250

C261C261

C251C251

C259C259

C253C253

C257C257

C258C258

C257C257

C262C262

C275C275

C276C276

C263C263

C258C258

R267R267

C294C294

R268R268

C295C295

C261C261

C255C255

C296C296

C297C297

N401N401

C110C110

C406C406

R403R403

R404R404

N400N400

R270R270

C249C249

C102C102

R100R100

R128R128

C113C113

C132C132

C101C101

R154R154

C208C208

C102C102

C202C202

D200D200

C201C201

R101R101

R103R103

C127C127

J227

1010

R104R104

C128C128

B100B100

J228

C103C103

V104V104

C120C120

R122R122

R203R203

R216R216

R215R215

C203C203

R201R201

4444

C114C114

R125R125

R124R124

V104V104

C161C161

C140C140

R272R272

C268C268

V250V250

V252V252

R131R131

V100V100

C293C293

C400C400

COBBACOBBA

C266C266

C265C265

C247C247

C274C274

C276C276

C278C278

R252R252

V251V251

R274R274

R260R260

C109C109

C104C104

R109R109

C276C276

C142C142

C405C405 C401C401

R120R120

R111R111

R205R205

R110R110

C107C107

C160C160

C121C121

V101V101

J252

R271R271

R277R277

C105C105

R258R258

N101N101

ChapsChaps

L104L104

F101F101

nokia

Service & Analysis Center Europe SACE CC Training Group

Internal audio faults

A: No audio from speaker

-. Check resistance of speaker (30 Ohm), change speaker if bend or soiled.

1. Check connection between speakerpads on PCB and C291/292, if not ok, check L271,272. Check for shorts to GND (>1M).

2. If fault persists, change COBBA (N250). Note that it is necessary to align RX / TX values and rewrite SIMlock-data after changing COBBA!

B: Microphone doesn't work

-. Check impedance of microphone (0,5-1kOhm), change if necessary.

3. Check mechanical condition of connector X280 (8850 only).

4. Check MicBias at L287, 2.4V on active microphone (see Layout). If not ok, check values around V250.

5. Check connection between L287 and C263 (470 Ohm).

6. If fault remains, change COBBA (N250). Note that it is necessary to align RX / TX values and rewrite SIMlock-data after changing COBBA!

Clock time problems

A: Clock time has to be corrected in short periods

1. Check amplitude and frequency of sleepclock oscillator at J228, should be 3.2Vpp squarewave at 32.768kHz. If not ok, change B100 or check parts like R100, R102, R154 and C101, C102, C113.

B: Clock time is lost after removing battery

-. Check contact springs of battery, bend them if nessecary (see also NSM-2 service bulletin 20) or change RTC-battery. Bending of springs should be always done, also with new batteries.

If fault persists, probably CCONT (N100) or CHAPS (N101) faulty. Note that you have to run energy management calibration after changing CCONT.

Not charging

A: Nothing happens if charger is connected

-. Check mechanical appearance of connector X110.

1. Check resistance of fuse F101.

2. Check resistance of Vcharge line to GND, value should be around 50kOhm. If not ok, check/change V100, C103/114.

3. Check / Change N101, N100.

B: “not charging" appears on LCD

-. Run energy management calibration. If it works without failuremessage, try to charge after calibration.

C: Battery temperature failed

4. Check X101, R120/122 or change CCONT (N100).

D: Battery size failed

5. Check X101, R120/122 or change CCONT (N100).

-. Battery voltage failed: Change CCONT (N100).

E: Charge current failed

6. Check / change R131, N101, N100.

-. Charge voltage failed:

7. Check Vcharge at voltage divider R103/104. If ok change CCONT (N100).

8. If not ok, check parts like X110, V100, F101, L104 or change N101.

SIMcard faults

A: Insert SIM card

-. Check X302 if bend or soiled, change if necessary.

1. Make sure that pads for SIMcard-reader on PCB are clean.

2. Check V104: Pin 1-SIMclock, pin 3-VSIM, pin-4 SIMdata, pin 5-SIMreset, also check R124, R125, R128.

3. Check resistance of SIMlines to GND, change V104, C127/128 if necessary.

4. Probably broken solderings under CCONT (N100). Remove CCONT if not underfilled, replace sparepart with µBGA rework machine and run energy management calibration.

-.. If fault persists, probably Mad or PCB faulty.

B: SIMcard not accepted

-. Use Wintesla to open quick/RF info window, compare shown SIMlock-data with the listed entries of the respective productcode.

-. If shown SIMlock-data is the same as in the list, SIMlock is ok.

Probably Msin data field is closed to special Imsi number range can be opened only by operator! (refer to general SB 65).

-. If shown SIMlock-data is not the same as in the list or somehow corrupted rewrite SIMlock-data with Nokia security password or send phone to SACE.

-. If SIMlock is corrected or inactive but fault remains, probably broken solderings under COBBA (N250). Change COBBA, align RX / TX values and rewrite SIMlock-data once more.

UI faults

A: Backlight failure (Also see measurement points on page 4)

1. Check voltage at pin 7 and 15 of N310 (see layout)- should be 2,8V when lights are on. If not ok, there could be a break between D200 and N310, or Mad is faulty

2. Check Vb 3.6V pin 1 of N310 and Vbb 2.8V pin 2 of N310. (See layout)

3. Check resistance of R310 and R311. (See layout)

4. Check Vb at LED´s V320-325 and V331-340. (See layout)

5. If keypad backlight is not bright enough, change resistor R311 (see layout) from39kOhm to 10kOhm (also see NSM 2 service bulletin 23).

B: Vibra failure

-. Check version of vibramotor, add support tape if necessary (see also NSM-3 service bulletin 11).

6. Check Vb 3.6V at V350.

7. Check Vb 3.6V pin 1 and Vbb 2.8V pin 2 of N310. (See layout)

8. Check vibra signal at pin 16 of N310. If not ok, check vibra_cnt at pin 19 of N310. (See layout) If signal is ok at pin19, change N310, else there is a break between D200 and N310, or MAD is faulty.

C: Display failure

-. If line segments missing or no display function at all, check mechanical appearance of display, change it if necessary.

CONFIDENTIAL

Baseband part 2

NSM-2/3

System Module RM7/RM7L

2(5)

Version 1.0 Approved

11.10.2000

NSM-3 differences in red

Measurepoint for GND-connected components

R723R723

C862C862

V801V801

C782C782

C788C788

C220C220

C754C754

C702C702

Pwr. AmpPwr. Amp

N702N702

R723R723

C760C760

L506L506

L503L503

C790C790

C758C758

R756R756

C864C864

R755R755

C863C863

R757R757

R758R758

C759C759

R711R711

C785C785

N600N600

R807R807

C805C805

VCOVCO

C802C802

R118R118

V350V350

C116C116

N220N220

C212C212

R211R211

R805R805

G800G800

R712R712

R801R801

V360V360

C206C206

C217C217

C209C209

C755C755

R751R751

Z671Z671

R710R710

Z700Z700

R704R704

T700T700

C860C860

R700R700

C783C783

T800T800

C804C804

C803C803

R802R802

C801C801

C205C205

ComboMemoryComboMemory

D210D210

C799C799

C560C560

C550C550

C741C741

L504L504

V116V116

L752L752

C704C704

R740R740

L103L103

L505L505

C211C211

C742C742

T740T740

R975R975

C793C793

R800R800

C206C206

C218C218

C204C204

L751L751

C703C703

C561C561

R974R974

C535C535

R564R564

R533R533

C108C108

C131C131

Mad2Mad2

C119C119

C213C213

C541C541

C670C670

C747C747

R541R541

R744R744

C714C714

R791R791

R532R532

C746C746

R790R790

R563R563

R565R565

C534C534

C106C106

C208C208

R671R671

N505N505

C533C533

C132C132

C557C557

C792C792

R792R792

C562C562

C564C564

C153C153

C133C133

CcontCcont

N100N100

R128R128

C113C113

R154R154

C102C102

R741R741

HagarHagar

C152C152

C202C202

D200D200

C201C201

R101R101

R103R103

R104R104

C128C128

C127C127

C286C286

C285C285

M300M300

R284R284

R283R283

R285R285

R284R284

R283R283

L284L284

L283L283

C281C281

R286R286

L284L284

L283L283

L631L631

R530R530

C154C154

B100B100

C103C103

V104V104

C720C720

C743C743

L553L553

R754R754

R763R763

C761C761

C733C733

V730V730

C730C730

R732R732

C162C162

R764R764

R763R763

R732R732

R730R730

C731C731

C630C630

C631C631

L600L600

C600C600

C601C601

C520C520

R510R510

C510C510

C531C531

C530C530

C532C532

C540C540

C521C521

R546R546

C150C150

C151C151

C102C102

R100R100

C101C101

C120C120

R122R122

R203R203

R216R216

R215R215

C203C203

R201R201

C114C114

R125R125

R124R124

V104V104

Z670Z670

C700C700

L510L510

C614C614

Z620Z620

C645C645

C163C163

R731R731

T630T630

T600T600

C523C523

C522C522

C513C513

C512C512

C511C511

C833C833

R833R833

C830C830

C129C129

C140C140

R120R120

R111R111

R205R205

R110R110

C160C160

C121C121

V101V101

R271R271

R277R277

C105C105

N101N101

ChapsChaps

F101F101

R611R611

R613R613

V904V904

C615C615

C644C644

Z600Z600

PCN

GSM+

V800V800

C879C879

R879R879

R834R834

R830R830

VCTCXOVCTCXO

C610C610

R610R610

C613C613

R643R643

R645R645

V903V903

R640R640

C643C643

C640C640

C612C612

C611C611

R614R614

V907V907

C620C620

C621C621

V905V905

C642C642

L800L800

C834C834

C835C835

C832C832

C831C831

R831R831

C836C836

R832R832

G830G830

C165C165

R269R269

C248C248

L272L272

L271L271

C291C291

C292C292

N250N250

C261C261

C251C251

C259C259

C253C253

C257C257

C258C258

C262C262

C275C275

C276C276

C263C263

R268R268

C257C257

C258C258

R267R267

C294C294

C295C295

C261C261

C255C255

C296C296

C297C297

N401N401

C110C110

C406C406

R403R403

R404R404

N400N400

C249C249

C161C161

COBBACOBBA

C107C107

C266C266

C265C265

C268C268

V250V250

V252V252

R258R258

R272R272

R131R131

C247C247

C274C274

C276C276

C278C278

C293C293

R252R252

V251V251

R274R274

R260R260

C109C109

C104C104

R109R109

C276C276

C142C142

C400C400

L104L104

C405C405 C401C401

V100V100

R270R270

+ 3 hidden pages