Nokia 3310, 3330, 3410 Service Manual

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Troubleshooting	PAMS Technical Documentation
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Component Identification: .............................................................................................	3
Display Module Suppliers.............................................................................................	7
Antenna Suppliers ..........................................................................................................	7
Baseband Testpoints ......................................................................................................	8
Power Schematic -Testpoints ....................................................................................	11
Power Schematic - Plots ............................................................................................	12
Cpu Schematic - Testpoints .......................................................................................	13
CPU Schematic - PLots .............................................................................................	14
Fault Finding Charts.....................................................................................................	15
1.Phone is Dead .........................................................................................................	15
2. Flash Programming Does Not Work .....................................................................	16
3.Phone Stays On or is Jammed ................................................................................	18
4. Display Information : “Contact Service” ...............................................................	20
5.No Network Found, No Call Established ...............................................................	21
6.Phone Not Registeing to a Network ......................................................................	22
7. Sim Related Errors ................................................................................................	23
8.Audio Faults...........................................................................................................	25
9.Charging Error ........................................................................................................	27
RF Key Component Placement....................................................................................	29
Abbreviations in Fault Finding Charts........................................................................	30
RF Component Locations ............................................................................................	31
GSM900 Receiver Troubleshooting ...........................................................................	33
GSM1800 Receiver Troubleshooting ..........................................................................	37
GSM900 Transmitter ...................................................................................................	41
PCN Transmitter ..........................................................................................................	47
Synthesizer ...................................................................................................................	49
Hagar and serial interface ............................................................................................	56
Wintesla tuning ............................................................................................................	58

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Baseband Troubleshooting	PAMS Technical Documentation

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PAMS Technical Documentation	Baseband Troubleshooting

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The phone is dead

The voltage at C404, C202, C226, C227, C228 is = 3,6V

Yes

Voltage on R224 = 3,6V

Yes

Voltage at C316= 2,8V Voltage at C243 = 2,8V when WDDISX is grounded

Yes

See section "Phone is unable to stay ON"

	No		Failiure in Vbatt line.
	No		Check X203, R220.
			Defective N201 or
			PCB
								Check power switch
	No		WDDISX = 0 when			No		Check WDDISX line :
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				Yes
									Ok
			Defective CCONT
			(N201)
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Baseband Troubleshooting	PAMS Technical Documentation

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Because of the use of ìBGA components it is not possible to verify if there is a short-circuit in any of the lines to and from the MAD2WD1 and the SRAM/flash circuits.

The faultfinding diagrams for flash programming are shown overleaf.

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NHM-5NX

PAMS Technical Documentation	Baseband Troubleshooting

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Flash programming doesn’t work

If fault information from Prommer is:

No

a) MCU doesn’t boot

See section: (2)

b) Serial dataline failure

c) Serial clock line failure

Yes

Connect R224 (towards N201)

(WDDISX) to GND.

Yes

C211 towards N201

(VBB) = 2.8 V

C518 towards C506

No

See section: "Phone is dead"

(VXO) = 2.8 V

when PWR switch is

pressed.

Yes

No

No

Check sleepclock

R308 (PURX) = "1" (2.8V)

Check C220 (SLEEPCLK)

circuit:

after 60ms

= 32KHz square wave

B200, R214,...

Yes

Yes

Defective N201 CCONT

or overloaded PURX line

Check buffer: V502, R559,...

No

V502 coll. (RFC)

= 13MHz clock, 700mVpp typ.

Ok

Check G502

Defective N500

Yes

VCXO 26MHz

HAGAR

Check the following lines:

M-BUS: X202 pin 3 -> X201 pin 4 -> V204 pin 5

FBUS_RX: X202 pin 8 -> X201 pin 2 -> V204 pin 3

No

FBUS_TX: X202 pin 7 -> X201 pin 1 -> V204 pin 1

Defective PCB

GND: X202 pin 4 -> X201 pin 3 -> GND

Check also pull-up and -down resistors:

R304, 302, 307

Ok

Defective D300

MAD2 or D301

Flash

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NHM-5NX
Baseband Troubleshooting	PAMS Technical Documentation

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Flash programming doesn’t work

Yes

External RAM error

No
Algorithm file or alias	Yes
not found.
No
MCU flash Vpp Error	Yes

No

Unknown error. See section "Phone Dead"

Check for activity on control lines for SRAM : J323 (RAMSelX)

No

Defective MAD2 (D300) or short circuit under the SRAM

Check the type of the flash

Flashing via X202 ?

No

Voltage at R310 higher than 1,7 V when flashing ?

No

Yes

Defective SRAM (D302)

Defective flash Yes or flashing

software has wrong version

Defective MAD2 (D300), defective voltagemonitor (D304) or flashing software has wrong version or short circuit under SRAM

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NHM-5NX

PAMS Technical Documentation	Baseband Troubleshooting

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Phone unable to stay on or phone is jammed.

CCONT watchdog is served,

J200 pulses "1" ->"0"

Yes

Software is able to run.

Check UI (keys and display)

Yes

	Ground the watchdog		No
	(Vbb = 2,8 V)
	(VXO = 2,8 V)
		Yes
			No
	PURX (J374) = "1"
	(2,8V) after 60 msec.
		Yes

See section "Phone is dead"

	Check sleepclk		No		Check sleepclk circuit
	(C220) = 32 kHz
					(B200, R214,....)
	square wave.
		Yes
					Defective
					CCONT (N201)
					or overloads on
					the PURX line.

	Check RFC buffer	No			OK
				Check G502, 26 MHz			Defective Hagar
	(V502, R559, C560...)

Yes

Possible defective ICs :

MAD2 (D300)

SRAM (D302)

FLASH (D301)

CCONT (N201)

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PAMS Technical Documentation	Baseband Troubleshooting

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NHM-5NX
Baseband Troubleshooting	PAMS Technical Documentation

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Phone doesn’t register to a network or the phone is unable to make a call

C207 (Vcobba) > 2,7V

No

Check CCONT (N201)

Yes

Vref at C201 =1,5V

No

Check C210, R509 and

C536.

Yes

Check supply voltage during RX slot :

C234 (VCP) > 4,8V

C240 (VRX) > 2,7V

No

Check CCONT

C245, R202, C239 (VSYN_1) > 2,7V

(N201)

C241 (VSYN_2) > 2,7V

During TX slot :

C242 (VTX) > 2,7V

Yes

Check synthesizer

lines during RX slot

No

R300 (->D300)

Check MAD2WD1

(D300)

R301/302 (->D300)

for pulsing 1<->0

Yes

Check RF control lines

during RX slot : No R502 = 0-1,2V typ.

R514 = 0-2,3V max.

Yes

Check analog data signals during RX slot :

R507 (RxIN, COBBA) = 0-1,5V

C514 (RxIP, COBBA) = 0-1,5V Recieved signals is biased to 1,2 DC, nominal amplitude = 125-450 mVpp AC

Yes

Check RF control lines during TX slot : J503 (TxP, MAD2) = "0"<->"1" (2,8V) R518 (TxC, COBBA) = 0-2,3V max.

Yes

Check analog data signals during TX slot :

TxIN, COBBA

TxIP, COBBA

TxQN, COBBA

TxQP, COBBA Transmitted signals is biased to

DC, nominal amplitude = 300 mVpp, freq. = 64 kHz

Check COBBA (N100)

If DC error : Check COBBA (N100) No else :

Check RF part.

If TxC error :

No Check COBBA (N100) If TxP error :

Check MAD2 (D300)

No	Check COBBA (N100)

Yes

Check RF part.

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