Nokia 3100, 3120 Service Manual 06 rh19 rh50 bb troublesht

Nokia Customer Care

RH-19/RH-50 Series Cellular Phones

6 - Baseband Description and

Troubleshooting

Issue 3 05/2004  2004 Nokia Corporation. Page 1

Company Confidential

RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

This page has been intentionally left blank

Page 2  2004 Nokia Corporation. Issue 3 05/2004

Company Confidential RH-19/RH-50

Nokia Customer Care 6 - Baseband Description and Troubleshooting

Table of Contents

Page No

Baseband Top-Level Description ..........................................................................................................5

Baseband block diagram ....................................................................................................................5

RH-19/RH-50 baseband feature list ...............................................................................................6

Environmental specifications ............................................................................................................6

Normal and extreme voltages.........................................................................................................6

Temperature conditions ....................................................................................................................6

Humidity................................................................................................................................................7

Frequencies in baseband ....................................................................................................................7

Printed wire board (PWB) ...................................................................................................................7

Baseband Architecture............................................................................................................................8

Baseband core .......................................................................................................................................8

Universal Phone Processor (UPP).................................................................................................... 8

Universal Energy Management (UEMK) .......................................................................................8

External flash and external SRAM.................................................................................................9

Energy management ............................................................................................................................ 9

Power supply modes ..........................................................................................................................9

Battery BL-5C/BR-5C.......................................................................................................................13

Power distribution............................................................................................................................13

DC characteristics ..............................................................................................................................16

Charging ................................................................................................................................................17

Audio circuitry .....................................................................................................................................17

Audio block diagram........................................................................................................................18

Earpiece ...............................................................................................................................................18

Microphones.......................................................................................................................................18

Integrated hands-free (IHF)...........................................................................................................19

Audio accessory receive path........................................................................................................19

Audio control signals.......................................................................................................................19

Acoustics ...............................................................................................................................................20

Earpiece acoustic..............................................................................................................................20

IHF speaker acoustics ......................................................................................................................20

Microphone acoustics .....................................................................................................................21

Vibra motor.........................................................................................................................................21

Audio modes ........................................................................................................................................22

Hand portable mode ........................................................................................................................22

Integrated hands-free audio mode..............................................................................................23

Headset audio mode ........................................................................................................................23

Loop set audio mode........................................................................................................................23

External hands-free audio mode..................................................................................................24

User Interface ..........................................................................................................................................25

LCD module ..........................................................................................................................................25

Baseband-LCD interface .................................................................................................................25

DC characteristics.............................................................................................................................25

Current consumption.......................................................................................................................27

Maximum ratings..............................................................................................................................27

AC characteristics.............................................................................................................................27

Reset timing .......................................................................................................................................29

Display power on/off sequence.....................................................................................................29

Issue 3 05/2004  2004 Nokia Corporation. Page 3

RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

LED power supply ...............................................................................................................................30

Keypad ...................................................................................................................................................30

SIM Interface ...........................................................................................................................................32

BB-RF Interface.......................................................................................................................................33

Digital signals between BB and RF ................................................................................................33

Analog signals between BB and RF ...............................................................................................35

Voltage regulators in BB for RF ......................................................................................................37

System Connector Interface................................................................................................................40

System connector ...............................................................................................................................40

Accessory control interface (ACI) ..................................................................................................41

Signal flow on ACI line - ACI-ASIC accessory inserted .........................................................42

Signal flow on ACI line - Non ACI-ASIC accessory inserted................................................43

FBUS .....................................................................................................................................................44

VOUT (Accessory Voltage Regulator)...........................................................................................44

HookInt ..................................................................................................................................................45

Charging ................................................................................................................................................46

DC-plug................................................................................................................................................46

VCHAR pins of system connector.................................................................................................46

Voltages and currents .......................................................................................................................47

Baseband Calibration.............................................................................................................................48

Energy management calibration ....................................................................................................48

Calibration method with JBV-1....................................................................................................48

Calibration method without JBV-1 .............................................................................................49

LCD contrast tuning ...........................................................................................................................50

Baseband Testpoints ..............................................................................................................................52

List and description ............................................................................................................................52

Testpoints on bottom side ...............................................................................................................54

Testpoints on top side .......................................................................................................................55

Baseband Troubleshooting...................................................................................................................56

Top level flowchart ............................................................................................................................57

Phone is dead ......................................................................................................................................59

Flash faults ...........................................................................................................................................61

Phone is jammed ................................................................................................................................63

Charger ..................................................................................................................................................66

SIM card error .....................................................................................................................................67

Audio faults ..........................................................................................................................................68

Earpiece fault .......................................................................................................................................72

Display fault .........................................................................................................................................73

Keypad fault .........................................................................................................................................75

Selftest failure .....................................................................................................................................77

Active cover interface .......................................................................................................................78

Page 4  2004 Nokia Corporation. Issue 3 05/2004

Company Confidential RH-19/RH-50

A

Nokia Customer Care 6 - Baseband Description and Troubleshooting

Baseband Top-Level Description

THe RH-19/RH-50 product is a hand portable GSM850 (RH-50), EGSM900 (RH-19)
GSM1800 (RH-19/RH-50), GSM1900 (RH-19/RH-50) DCT-4 generation phone for the
expression segment, with optional active covers available.

The RH-19/RH-50 baseband consists of the DCT4 common baseband chipset having
some product specific blocks of its own, such as PopPortTM system connector, IHF and a

color display.

The baseband engine consists basically of two major ASIC's.

• The UEMK is the Universal Energy Management IC. It includes the analog audio cir­cuits, the charge control and voltage regulators. (The ‘K’ just provides the informa­tion that this is a shrunk version of the UEM. There is no difference in functionality
between UEM and UEMK)

• The UPP is the Universal Phone Processor and contains DSP, MCU and some internal
memory.

Baseband block diagram

The below system block shows the main BB function blocks.

PA Supply

UEM

SIM

Active

Cover I/F

EAR

Battery

Figure 1: Baseband block diagram

RF Supplies

UEMK

RF

RF RX/TX

Supplies

RF RX/TX

SIMIF

SLEEPCLK

32kHz

CBUS/
DBUS

BB

Clock

UPP

M

MIC

VIBRA

IHF

Audio

PA

External Audio

CI, Fbus, Vout

Charger Connection

System connector DC plug

system connector

DLIGHT
KLIGHT

Baseband

DC-

DC

Con-

verter

Keypad
Display

COMBO
Memory

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RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

RH-19/RH-50 baseband feature list

Hardware characteristics:

• Single PWB design

• Universal Phone Processor UPP8Mv2.6 (RH-19) or UPP8Mv3.5 (RH-50) with 8Mbit
internal SRAM

• Additional external 4Mbit SRAM and 64MBit FLASH memory in one single package
(called Combo).

• Universal Energy Management ASIC UEMK (RH-19) or UEMK-edge (RH-50)

• GSM triple band 900/1800/1900 (RH-19) or 850/1800/1900 (RH-50)

• BR-5C / BL-5C battery

• Internal antenna assembled on IHF container

• Small SIM, supporting 1.8 & 3.0V

• Internal vibra motor

UI features:

• 130x130 pixel color display, 4096 colors

• Standard keypad with 4-way navigation key, two soft keys

• Illumination concept is based on a DC-DC converter

• Display: two white LED's

• Keypad: six white LED's

• Polyphonic ringing tones (MIDI)

• Internal hands-free

• Active Cover Connection

• AMR speech codec (RH-50 only)

Environmental specifications

Normal and extreme voltages

Following voltages are assumed as normal and extreme voltages for used battery:

• Nominal voltage: 3.7 V

• Lower extreme voltage: 3.2 V

• Higher extreme voltage (fast charging): 4.4 V

Temperature conditions

Operational temperature range (all specifications met within this range): -10°C..+55°C

Functional temperature range (reduced performance): -30°C..+70°C

Storage temperature range: -30°C..+85°C

Page 6  2004 Nokia Corporation. Issue 3 05/2004

Company Confidential RH-19/RH-50

Nokia Customer Care 6 - Baseband Description and Troubleshooting

Humidity

Relative humidity range is 5.....95%.

The BB module is not protected against water. Condensed or splashed water may cause
interim or permanent phone malfunction.

Any submerge of the phone most likely causes permanent damage.

Frequencies in baseband

There are several clock frequencies at the baseband part. Below table lists all available
frequencies. The asynchronous and diagnostic busses are not included.

Table 1: Frequency list

Frequency Context UPP UEMK Flash SIM Comment

52 MHz
26 MHz
13 MHz

3.25 MHz

Up to 1 MHz
1 MHz

32 kHz

1.2 kHz

1.625 / 6.5

Memory clock
RF clock
DBUS, RFBusClk
SIM

RFConvClk
CBUS

Sleep clock
ACI
Display IF

Printed wire board (PWB)

Characteristics of the PWB

• Single PWB

• 1.2 mm, 8 layer board

• Double sided assembled

• Through holes vias and buried vias are possible

The PWB is prepared for I-Line under filling of UEMK, UPP and the Flash (64 Mbit and
128 Mbit).

X
X
XX

X

X
X

X
X

X
X

X
X

X

XMIN. FREQ.

ESTIMATION

Frequency depends on SW

Issue 3 05/2004  2004 Nokia Corporation. Page 7

RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

Baseband Architecture

Baseband core

Universal Phone Processor (UPP)

Main characteristics of the used UPP are:

• DSP by Texas Instruments, LEAD3 PH2+ Megacell 16 bit DSP core, 32 bit I/F - max.
speed 200 MHz.

• MCU based on ARM/Thumb 16/32 bit RISC MCU core - max. speed 50 MHz

• Internal 8 Mbit SRAM (PDRAM)

• General purpose USARTs

• SIM card interface

• Accessory interface (ACI)

• Interface control for: keypad, LCD, audio and UEMK control

• Handling of RF-BB interface

The UPP is housed in a 144-pin uBGA package (12x12mm, 0.8mm pitch).

In RH-19/RH-50 the UPP is clocked by a 26MHz frequency from the RF-chip "Mjoelner”.

This 26MHz-clock frequency is internally sliced down by UPP to 13MHz. This frequency is
then inside UPP multiplied to different frequencies, e.g. 145MHz for the DSP core.

UPP can operate on 4 different voltages; 1.05,1.3,1.5 and 1.8V. The voltage can be pro­grammed "on the fly" by the SW. For example in standby-mode, 1.3V is used for power
saving, but in active-mode (i.e. call) the voltages is increased to 1.8V to get maximum
performance.

Universal Energy Management (UEMK)

RH-19/RH-50 uses the UEMK version so called "UEMK". UEMK is a die shrunk version of
standard UEM's, but with the same functionality.

Main characteristics of UEMK's are:

• ACI support

• Audio codec

• 11 Channel A/D converter

• Auxiliary A/D converter

• Real time logic

• Baseband regulators

• RF regulators

• Voltage references needed for analogue blocks

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Nokia Customer Care 6 - Baseband Description and Troubleshooting

• 32 kHz crystal oscillator

• SIM interface and drivers

• Security logic

• Storage of IMEI code

• Buzzer and vibra motor drivers

•2 LED drivers

• Charging function

• RF interface converters

The UEMK is housed in a 168-pin uBGA package (12x12mm, 0.8mm pitch).

External flash and external SRAM

The Combo memory is a multi chip package memory which combines 64Mbit (4Mx16)
muxed burst multi bank Flash and 4Mbit muxed CMOS SRAM. These two dies are stacked
on each other in one package. The functionality of the Flash memory is the same, as it is
known from generic BB4.0 products.

The combo is supplied by single 1.8V for read, write and erase operation.

This Combo memory is housed in a 48-ball TBGA type with a 0.5mm ball pitch. The outer
dimensions are 10x8mm and the thickness is 1.1 mm.

Energy management

The energy management of RH-19/RH-50 is based on BB 4.0 architecture. A so called
semi fixed battery (BL-5C/BR-5C) supplies power primarily to UEMK ASIC and the RF PA.
UEMK includes several regulators to supply RF and baseband. It provides the energy
management including power up/down procedure.

Power supply modes

The functional behavior of the UEMK can be divided into 7 different states. Since the
UEMK controls the regulated power distribution of the phone, each of these states
affects the general functionality of the phone:

•No supply

• Backup

•Power off

• Reset

•Power on

• Sleep

•Protection

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RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

Figure 2: UEMK state diagram

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Nokia Customer Care 6 - Baseband Description and Troubleshooting

The text below explains the state diagram. The symbol '' means that the voltage rises

and 'Ê' that the voltage drops. '→' Means the result of the conditions set on the left

most side.

VBAT < VMSTR and VBACK > V_BUCOFF → BACK_UP

VBAT < V

VBAT  V

VBAT > V

VBAT  V

PWRONX = '0' or VCHAR  VCHAR

VBAT > V

DELAY2 elapses → DELAY3

VBAT > C

DELAY4 elapses → PWR_ON
SLEEPX = '0' → SLEEP
SLEEPX = '1' → PWR_ON

VBAT  V

No change

VBAT > V

MSTR and VBACK < V_BUCOFF → NO_SUPPLY

MSTR+ and VBACK < V_BUCOFF → DELAY1

MSTR and DELAY1 elapses → RESET

MSTR+ and VBACK > V_BUCOFF → DELAY1

DET+

or ALARM = '1' → DELAY1

COFF+ → DELAY2

OFF+. and DELAY3 elapses → DELAY4

COFF and VBAT > VMSTR- → PWR_OFF

MSTR → Stay in

PWR_OFF

PWRONX  detection during
DELAY2

Watchdog elapses (approx. 100 (µs) → PWR_OFF
Thermal shutdown → PWR_OFF
PwrKeyWatchdog (4 sec.) elapses → PWR_OFF

→ PWR_OFF

The different states of the UEMK are detailed in the sections below.

Note: RH-19/RH-50 does not have a backup battery.

No Supply

In the NO_SUPPLY mode the UEMK has no supply voltage (VBAT < V
V_BU

). This mode is due to the fact that both the main battery is either discon-

COFF-

nected or discharged to a low voltage level.

The UEMK will recover from NO_SUPPLY into RESET mode if the VBAT voltage level rises
above the V

level by either reconnecting the main battery or charge it to such level.

MSTR+

and VBACK <

MSTR

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6 - Baseband Description and Troubleshooting Nokia Customer Care

Backup

In BACK_UP mode the main battery is either disconnected or has a low voltage level
(VBAT < V

and VBACK > V_BU

MSTR-

COFF+

).

The regulator VRTC that supplies the real time clock is disabled in BACK_UP mode.
Instead the unregulated backup battery voltage VBACK supplies the output of the VRTC.
All other regulators are disabled and the phone has no functionality.

The UEMK will recover from BACK_UP mode into RESET mode if VBAT rises above V

Power Off

In order for the UEMK to be in PWR_OFF mode, it must have supply voltage (VBAT >
V

The regulator VRTC regulator is enabled and supplying the RTC within the UEMK. The
UEMK will enter RESET mode after a 20 ms delay whenever one of the below listed con­ditions is logically true:

• The power button is activated

• Charger connection is detected

• RTC alarm is detected

The UEMK will enter PWR_OFF from all other modes except NO_SUPPLY and BACK_UP if
the internal watchdog elapses.

Reset

When the UEMK enters RESET mode from PWR_OFF mode the watchdog is enabled. If
the VBAT fails to rise above the power-up voltage level V

dog elapses, the UEMK will enter PWR_OFF mode. Otherwise after a 200 ms delay the

regulator VFLASH1 will be enabled and after an additional delay of 500 µs the regulators

VANA, VIO, VCORE and VR3 will be enabled. All other regulators i.e. VFLASH2, VSIM, VR1,
VR2 and VR4 - VR7 are software controlled and disabled by default. After an additional
delay of 20 ms the UEMK enters PWR_ON mode.

MSTR+

.

MSTR+

).

(3.1 V) before the watch-

COFF+

Power On

In PWR_ON the UEMK is fully functional in the sense that all internal circuits is powered
up or can be by means of software. The UEMK will enter PWR_OFF mode if VBAT drops
below V

for a period of time longer than 5 µs. The UEMK will furthermore enter

COOF-

PWR_OFF mode if either of the watchdogs Operational State Machine (approx. 100 µs),

Security (32 sec.) or Power Key (4 sec.) elapses or if any of the regulators triggers the
thermal protection circuitry

Sleep

The UEMK can be forced into SLEEP mode by the UPP by setting the input SLEEPX low for

more than 60 µs. This state is entered when the external UPP activity is low (phone in

sleep) and thereby lowering the internal current consumption of the UEMK. The regulator
VANA is disabled and VR1 - VR7 are either disabled or in low quiescent mode.

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Nokia Customer Care 6 - Baseband Description and Troubleshooting

From SLEEP the UEMK enters PWR_ON if SLEEPX goes high, PWR_OFF mode if watchdog
elapses or BACK_UP mode if VBAT drops below V

MSTR-

.

Protection mode

The UEMK has two separate protection limits for over temperature conditions, one for
the charging switch and one for the regulators. The temperature circuitry measures the
on-chip temperature. In case of charging over temperature, the circuit turns the charg­ing switch off. In case of over temperature in any of the regulators, the UEMK powers
off.

Battery BL-5C/BR-5C

Product RH-19/RH-50 uses the so called "case less" Li Ion battery BL-5C/BR-5C.

Type Capacity Manufacturer BSI Value

BL-5C 850 mAh Many sources 75 kOhm

BR-5C 820mAh Sanyo 75 kOhm

BR-5C 820mAh Matsushita 47 kOhm

Main advantage of case less battery types is the overall size, particular the thickness and
the number of contact terminals.

These batteries have a three-pin connector (BTEMP is not used). The battery does not
support temperature measurement inside battery pack. In order to get temperature
information of the battery, a NTC is mounted on the PWB within the BB area.

Ni based batteries are not supported by RH-19/RH-50.

Power distribution

Under normal conditions, the battery powers the baseband module. Individual regulators
located within the UEMK regulate the battery voltage VBAT. These regulators supply the
different parts of the phone. 8 regulators are dedicated to the RF module of the phone,
and 6 to the baseband module.

The VSIM regulator is able to deliver both 1.8V and 3.0V DC and thus supporting two dif­ferent SIM technologies. A register internally in the UEMK controls the output of VSIM
and can be written to by the MCU via the CBUS.

The regulator VCORE is likewise adjustable and controlled by registers written by the

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RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

MCU. VCORE supplies the core of the UPP and can be adjusted on the fly by the MCU if
DSP capacity is inadequate. Higher VCORE supply (1.8 V) results in faster core operations
in the UPP.

The regulator VFLASH2 supplies audio circuitry and is controlled by the MCU

Regulators VANA, VFLASH1 and VIO are solely controlled by the UEMK and cannot be
enabled or disabled by the MCU. Furthermore, VFLASH1 and VIO are both ON, though in

low quiescent mode when phone is in sleep mode. An output current of 500 µA can be

drawn from the regulators. VIO supplies the UPP, FLASH and LCD, VFLASH1 supplies the
LCD module, VANA is supplying analogue parts internally in the UEMK as well as the
baseband audio circuitry and pull-up resistors on the input of the UEMK slow AD con­verters.

System connector provides a voltage to supply accessories. The white LED's need a higher
voltage supply as the battery can provide in bad condition. Separate external regulators
supply both consumers.

The regulators VR1A, VR1B, VR2 - VR7 and IPA1 - IPA4 are controlled by the DSP via
the DBus. VR4 - VR7 are controlled by the UEMK as well and are disabled in sleep regard­less of DSP writings.

VBAT is furthermore distributed, unregulated, to the RF power amplifier, audio power
amplifier and external baseband regulators.

The CHACON module in the UEMK controls the charging of the main battery. Further­more it contains a 3.2 Vdc regulator for charging of the backup battery and a 1.8 Vdc
regulator supplying the internal real time clock.

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V

Nokia Customer Care 6 - Baseband Description and Troubleshooting

Figure 3: Baseband power distribution

Battery

Baseband

UEMK

RF Regulators

Baseband
Regulators

RTC

BAT

LED
regulator

ACC
regulator

PA Supply

CHACON

VOUT

Tomahawk System Connecto

PopPortTM System Connector

VR1A
VR1B

VR2-7

VSIM

VCORE

VANA

VIO

VFLASH1

VFLASH2

6

IHF PA

SIM

UPP

FLASH

LCD

Backup

battery

LED

Keyboard/displa y

Active
Cover

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6 - Baseband Description and Troubleshooting Nokia Customer Care

DC characteristics

The following table reflects the specifications of voltage and current regulators within
the UEMK:

Table 2: UEMK regulator outputs

Output Voltage (V) Output Current

Regulator Target

Min Typ Max Min Max

VR1A RF 4.6 4.75 4.9 0 10

(mA)

VR2

4

RF 2.70 2.78 2.86 0.1 100

VR3 RF 2.70 2.78 2.86 0.1 20

VR4 RF 2.70 2.78 2.86 0.1 50

0.1

1

VR5, VR6

RF 2.70 2.78 2.86 0.1 50

0.1

VR7 RF 2.70 2.78 2.86 0.1 45

VrefRF01 RF 1.334 1.35 1.366 - 0.1

VIO

VSIM

1

2

BB 1.72 1.8 1.88 0.005

0.005

BB 1.745

2.91

1.8

3.0

1.855

3.09

0.005

0.005

150

0.500

25

0.500

VANA BB 2.70 2.78 2.86 0.005 80

VCORE

2

BB 1.000

1.235

1.425

1.710

0.974

1.215

1.410

1.692

1.053

1.3

1.5

1.8

1.053

1.3

1.5

1.8

1.106

1.365

1.575

1.890

1.132

1.365

1.575

1.890

0.005

0.005

0.005

0.005

70
85
100
120

70
85
100
120

200
200
200
200

VFLASH1 BB 2.70 2.78 2.86 0.005

0.005

3

VFLASH2

BB 2.70 2.78 2.86 0.005 40

1

The second current value indicates the maximum possible output current of the regulator

when in low quiescent mode.

2

The output voltages are split into two different current categories. The upper part is the low-

er range of output current, and the lower part is the higher range of output current.

3

Condition in sleep-mode depends on MCU writings to UEMK regulator register solely.

4

Condition in sleep-mode depends on DSP writings to UEMK register.

70

1.5

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Nokia Customer Care 6 - Baseband Description and Troubleshooting

Charging

The charging of the main battery is controlled by the UEMK. External components are
needed in order to sense charging current and voltage that are needed by the Energy
Management (EM) software and to protect against EMC into the baseband area. The
charger is connected to the phone via the DCT3 bottom connector or the charger pads of

the PopPortTM system connector.

Figure 4: Charging configuration

Transceive

0R22

1u

10n

Connecting a charger to the telephone creates a voltage, VCH, on the UEMK VCHAR
input. When the VCH level is detected to rise above the VCH

CHACON, charging starts.

3-wire chargers can be connected, but the PWM is not supported.

In order to protect the phone from damage due to over voltage caused by a sudden bat­tery removal while charging proceeds, the charger switch is closed immediately.

Audio circuitry

This section describes the audio-HW inside the BB. Thus e.g. external audio components
and acoustics are not considered with the details in this section.

UEMK

VBATREGS

CHACON

Charger

VCHARINVCHAROUT

PWM

VCHAR

1n

33R/100MHz

VCHAR

1.5A

GND

threshold (2.0 Vdc) by

DET

The main topology comes from other phones using BB4.0 engine, where the audio-HW is
mostly integrated into the UEMK-ASIC. The biggest difference is that RH-19/RH-50 has
also integrated hands-free (IHF).

Issue 3 05/2004  2004 Nokia Corporation. Page 17

RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

Audio block diagram

Figure 5: Audio block diagram

UPP

EARDATA
MICDATA

GENIO14

GENTEST0
FBUS_TX
FBUS_RX

UEMK

EARDATA
MICDATA

VIBRA

MICB1

MIC1P
MIC1N

EARP
EARN

HOOKINT

MICB2

MIC2P
MIC2N

HF
HFCM

XEAR

internal microphone path

earpiece path

accessory transmit path

accessory receive path

IHF speaker path

+

On/Off

IHF Amplifier

M

J103 ProdTP6

VBAT

Internal Microphone

Earpiece

XMICP
XMICN

XEARP
XEARN

Tomahawk Connector

IHF Speaker

DAI I/F

Earpiece

RH-19/RH-50 uses an earpiece which is also referred to as "PICO speaker". This is a 32
ohm speaker with the diameter of 8 mm.

Earpiece is fed by the differential signals "EARP" & "EARN" from UEMK. The signals run
quite directly from UEMK to the earpiece, only some passive ands EMC protection com­ponents are needed.

The external earpiece signals are fed by the "HF" & "HFCM" pins.

The level (swing) of earpiece-signals can be adjusted by register values inside UEMK.
These signals have common voltage level of 1.35 V (0.8 V for HF) at UEMK pins.

Microphones

An EMC-improved type of microphone is used as internal microphone in RH-19/RH-50,
diameter of which is 2.2mm.

Internal microphone circuitry is driven single ended. Microphone needs bias voltage,

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Nokia Customer Care 6 - Baseband Description and Troubleshooting

which is provided by UEMK and is fed through a resistor to the microphone. A resistor is
also needed to the other side of the microphone, i.e. between microphone and GND, in
order to provide the differential signals to UEMK. Audio signals are AC-coupled from the
microphone.

For the external microphone a differential input is used.

MIC1N & MIC1P (audio signals) and MICB1 (bias voltage) are used for the internal
microphone. MIC2N & MIC2P and MICB2 are used for external microphone.

Integrated hands-free (IHF)

The speaker used for IHF is a 16 mm diameter speaker with 8 Ohm impedance, and is also
known as "MALT" speaker.

IHF circuitry uses differential outputs from UEMK.

Depending on the audio mode the IHF amplifier is driven either from UEMK HF / HFCM or
XEAR audio outputs. The IHF audio power amplifier (APA) LM4890 has a bridge-tied-load
(BTL) output in order to get the maximum use of supply voltage. The supply voltage for
driving circuitry of speaker is VBAT, thus the swing across the speaker is ±VBAT.

The shutdown of the IHF PA is controlled by UPP using GENIO14.

Audio accessory receive path

In RH-19/RH-50 the accessory receive path is directly driven from UEMK HF / HFCM dif­ferential audio outputs, the output signal complies with the PopPortTM accessory inter-

face.

For EMC protection ferrites are connected in series to the earpiece, for ESD protection
varistors are used.

Audio control signals

Furthermore, a couple of signals are needed to control the external audio device.

The HEADINT signal is needed for recognizing the external device (e.g. headset) con­nected to the system. The recognition is based on the ACI-pin on the system connector,
which is shorted to ground inside the external device.

The button of the external device generates HOOKINT. This is used e.g. to answer or to
end a phone call.

Issue 3 05/2004  2004 Nokia Corporation. Page 19

RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

Acoustics

Earpiece acoustic

RH-19/RH-50 uses the so called "PICO" earpiece.

This earpiece is mounted into the UI-shield assembly, the sealing of the back and front
volume are implemented in the UI-shield by die casting. This sealing part also provides
the sealing against the A-cover.

Figure 6: Earpiece implementation

IHF speaker acoustics

As mentioned, the so called "MALT" speaker is used in RH-19/RH-50 for integrated
hands-free and ringing tone applications.

The IHF speaker is mounted to the IHF enclosure by means of the speaker adhesive. The
IHF enclosure provides the needed back volume for the speaker. The IHF enclosure is
closed with the IHF lid, which is carrying the IHF pins to contact the IHF speaker.

The sealing of the effective acoustic volumes is achieved with the enclosure adhesive,
which glues the IHF lid to the IHF enclosure.

To provide a long-term reliability additionally the IHF lid is heat stacked to the IHF enclo­sure.

The B-cover gasket provides a fitting between the B-cover and the IHF enclosure. This
fitting is attached with an adhesive to the IHF enclosure and also includes a dust and

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Nokia Customer Care 6 - Baseband Description and Troubleshooting

water shield to protect the speaker inside from dust and swarf.

Due to the fact that the IHF enclosure is also carrying the antenna radiator, the whole
assembly is named antenna assembly.

Due to heat stacking of the antenna assembly, it cannot be disassembled and in case of
failure only be exchanged as one complete assembly.

Figure 7: Exploded view of antenna assembly

Microphone acoustics

A standard microphone module is used. This module is embedded into a so called "rubber
boot" and connected to RH-19/RH-50 system module by spring contacts.

The microphone is placed close to the system connector. The sound port of the micro­phone is located towards the bottom of the phone

Vibra motor

A vibrating alerting device is used to generate a vibration signal for an incoming call.

This vibra is located in the bottom section of the phone.

The vibrator is driven by the UEMK output VIBRA, and controlled with a PWM signal. The
supply of the vibra is taken from the battery voltage of the phone.

Issue 3 05/2004  2004 Nokia Corporation. Page 21

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6 - Baseband Description and Troubleshooting Nokia Customer Care

Audio modes

There are six different audio configurations. These can create following audio modes:

•Hand portable

• Integrated hands-free

• Headset

• Loop set

• External hands-free

The following audio sources have to be routed according to the active audio mode:

• Speech

• Ringing tones / SMS tones

• Keypad tones

• Error tones / Warning tones

• Game tones

Hand portable mode

In hand portable mode earpiece path and internal microphone path are in use. The audio
sources are routed according to the following table:

Table 3: Handportable mode audio routing

Audio Source Earpiece

Speech X X

Ringing tones, SMS tones X

Keypad tones X

Warning / Error tones X

Game tones X

Internal
Microphone

IHF
speaker

Accessory
receive path

Accessory
transmit path

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Nokia Customer Care 6 - Baseband Description and Troubleshooting

Integrated hands-free audio mode

In integrated hands-free mode IHF path and internal microphone path are used. The
audio sources are routed according to the following table:

Table 4: IHF mode audio routing

Audio Source Earpiece

Speech X X

Ringing tones, SMS tones X

Keypad tones X

Warning / Error tones X

Game tones X

Internal
Microphone

Headset audio mode

In headset mode accessory receive path and accessory transmit path are used. RH-19/
RH-50 supports the following headsets:

• HDB-4: mono headset, boom design

• HS-1C: camera headset

• HS-10: retractable headset

• HSU-3: privacy headset

• HS-5: mono headset traditional design (RH-50 only)

• HS-2R: FM radio headset (RH-50 only)

IHF
speaker

Accessory
receive path

Accessory
transmit path

The audio sources are routed according to the following table:

Table 5: Headset mode audio routing

Audio Source Earpiece

Speech X X

Ringing tones, SMS tones X X

Keypad tones X

Warning / Error tones X

Game tones X

Internal
Microphone

IHF
speaker

Accessory
receive path

Loop set audio mode

In loop set mode accessory receive path and accessory transmit path are used. RH-19/

Accessory
transmit path

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RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

RH-50 supports the loop set LPS4.:

Table 6: Loop set mode audio routing

Audio Source Earpiece

Speech X X

Ringing tones, SMS tones X X

Keypad tones X

Warning / Error tones X

Game tones X

Internal
Microphone

IHF speaker

Accessory
receive path

External hands-free audio mode

In external hands-free mode accessory receive path and accessory transmit path are
used. RH-19/RH-50 supports external hands-free accessories:

BHF-1: basic car hands-free kit

HFU-4: advanced car hands-free kit

Table 7: External hands-free mode audio routing

Audio Source Earpiece

Internal
Microphone

IHF speaker

Accessory
receive path

Accessory
transmit path

Accessory
transmit path

Speech X X

Ringing tones, SMS tones X

Keypad tones X

Warning / Error tones X

Game tones X

Page 24  2004 Nokia Corporation. Issue 3 05/2004

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Nokia Customer Care 6 - Baseband Description and Troubleshooting

User Interface

LCD module

RH-19/RH-50 is using a 130 * 130 dot LCD display with 4096 colors. The illumination is
integrated into the LCD module.

Baseband-LCD interface

The LCD display is connected to the transceiver PWB by 10-pin board-to-board connec­tor.

Figure 8: LCD connector

1

10

DC characteristics

Display is using 3-wire serial interface. Signals for LCD panel are shown in table below.

The chip-select XCS (active low) enables and disables the serial interface. RESX (active
low) is external reset signal. The SCL is serial data clock. SI data-length is 8 bits + D/C­bit. First bit is D/C-bit which indicates the status of following 8 bit data. In case of com­mand data D/C-bit is low ('0'). VDDI is logic voltage supply for the display. VDD is supply
voltage for high voltage generation. GND is system ground for display.

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6 - Baseband Description and Troubleshooting Nokia Customer Care

Table 8: LCD Interface DC characteristics

Pin No Signal name Description Min Typical Max Unit Description

1 VDDI IN 1.7 1.8 VDD V Logic voltage supply

2 RESX IN H: 0.7xVDD

L: 0

3SI IN H: 0.7xVDDI

L: 0

4 SCL IN H: 0.7xVDDI

L: 0

5 XCS IN H: 0.7XVDDI

L: 0

6 VDD IN 2.6 2.75 3.6 V Voltage supply

7 NC 0 V Not connected

8 GND System ground

9 LED - 0.505 0.525 0.545 V

10 LED + TBD 7.0 TBD V

Note: H stands for high signal level and L for low signal level.

H: VDDI
L: 0.3xVDDI

H: VDDI
L: 0.3xVDDI

H: VDDI
L: 0.3xVDDI

6.5 MHz Serial data clock speed

H: VDDI
L: 0.3xVDDI

V Reset

(active low)

V Serial input

V Serial input clock

V Chip select

(Active low)

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Nokia Customer Care 6 - Baseband Description and Troubleshooting

Current consumption

Table 9: LCD interface current consumption

Pin

Signal name Description Min Typical Max Unit Description

No.

6/8 VDD Display pixels - 0.5 1.25 mA Full mode, 4 k colors. Maximum

for chess pattern picture.

6/8 VDD Display pixels - 0.15 0.25 mA Partial mode, 32 lines, 4 k colors.

Maximum for chess pattern pic­ture

9/10 LED - LED + Display illumination - 15 30 mA 2 white LED in series

Maximum ratings

Table 10: LCD interface maximum ratings

Item Symbol Rating Unit

Power Supply voltage V

Power supply voltage (logic) V

Signal Input voltage V

LED input current I

AC characteristics

DD

DDI

IN

LED

Figure 9: Write characteristics

-0.3 to + 4.0 V

-0.3 to + 4.0 V

-0.3 to Vddi + 0.5 V

30 mA

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6 - Baseband Description and Troubleshooting Nokia Customer Care

Table 11: AC characteristics

Signal Symbol Parameter Min Max Unit

CSX T

SCL t

SI T

CSS

T

CSH

SCYC

t

SLW

t

SHW

SDS

T

SDH

Chip select setup time 10 - ns

Chip select hold time 35 - ns

Clock cycle 150 - ns

Clock pulse "L" duration 60 - ns

Clock pulse "H" duration 60 - ns

Data setup time 60 - ns

Data hold time 60 - ns

1. Rise tr and fall tf time must be within 15 ns maximum.

2. Timings are specified according to 30% and 70% of V
rise and fall times are described in the figure below.

Figure 10: Rise and fall time input and output

tr

70%

tf

70%

as reference. Definitions to

DDI

30%

30%

Table 12: Rise and fall times in input and output of display driver

Parameter Symbol Min Max Unit

Input Tr, tf 15 ns

Output Tr, tf 15 ns

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Nokia Customer Care 6 - Baseband Description and Troubleshooting

Reset timing

Reset timing characteristics are shown in the figure below.

Figure 11: Reset timing

Table 13: Reset Timing

Signal Symbol Parameter Min Max Unit

RESX tRW Reset pulse duration 200 ns

tRT Reset cancel 1500 ns

Display power on/off sequence

Power on/off sequence if described in the figure below.

VDDI

VDD

CSX

RESX

t<1ms

t>100ns

Figure 12: Power on/off sequence

t<1ms

Issue 3 05/2004  2004 Nokia Corporation. Page 29

RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

LED power supply

In RH-19/RH-50, white LED are used for LCD and for keypad lighting. Two LED are used
for LCD lighting and six LED for keyboard. A step up DC-DC converter TK11851 is used as
a LED driver.

Display Module

DCDC-Converter

Vbat

TK11851

Keypad

Shutdown

(DLIGHT)

Vfb

RRR

Keypad LEDs

Ricd

The display LEDs are driven in serial mode to achieve stable backlight quality. This means
constant current flow through LCD LEDs. Serial resistance R_lcd is used to define the
proper current. The feedback signal, FB, is used to control the current. Driver will increase
or decrease the output voltage for LEDs to keep the current stable.

Keyboard LED are driven in 2 serial/3 parallel mode. This means constant current flow
through each branch. Serial resistance R are used to limit the current through LEDs.

Driver is controlled by the UEMK via the DLIGHT open drain output (internal pull up
active). This signal is connected to driver EN-pin. It is possible to control the LED bright­ness by PWM.

The RH-19/RH-50 phone doesn't have separate keyboard PCB. The keys are directly con­nected via the KEYB(10:0) bus to the UPP. The keypad consist of a 5x4 matrix, meaning 5
rows (ROW0 - ROW4) and 4 columns (COL1 - COL4).

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Nokia Customer Care 6 - Baseband Description and Troubleshooting

Figure 13: RH-19/RH-50 key pad

Within the RH-19/RH-50 design, there was a requirement to allow the use of multiple
keys to be operated at a time, for use with games etc. Thus the keypad can be operated
in this manner.

The power on key is connected to the UEMK PWRONX signal.

Issue 3 05/2004  2004 Nokia Corporation. Page 31

RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

SIM Interface

RH-19/RH-50 uses the same SIM card reader (SIM reader) as the NPL-2. Electrical con­nection of SIM reader is similar to other DCT4 products.

The SIM interface is split between UEMK and UPP (see figure below). This has been done
in order to reduce the amount of interconnections on the SIM interface between the UPP
and the UEMK.

The SIM interface control logic and UART is integrated into the UPP. The SIM interface
start-up and power down sequence, including timing and reset generation is imple­mented in UEMK. The SIM interface in the UPP supports the SIM speed enhancement
features, which improves the data transfer rate in the SIM interface.

The UEMK contains the SIM interface logic level shifting. UPP SIM interface logic levels
are 1.8V. The SIM interface can be programmed to support 3V and 1.8V SIMs. A 5V SIM
interface is not supported. A register in the UEMK selects the SIM supply voltage. It is
only allowed to change the SIM supply voltage when the SIM IF is powered down.

The SIM power up/down sequence is generated in the UEMK. The Battery Size Indication
(BSI) is used to recognize if the battery suddenly is removed from the transceiver block.
The SIMCardDet is not used. If the BSI goes low, the power down sequence is automatic
initiated. The SIMIF will then force all the connections low, i.e. SIMRST, SIMCLK, SIM­DATA and VSIM. A comparator inside the UEMK does the monitoring of the BSI signal.
The comparator offset is such that the comparator output does not alter state as long as
the battery is connected. The BSI comparator threshold level is 2.1 V with 75 mV hyster­esis.

Figure 14: UPP, UEMK and SIM connections

K

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Nokia Customer Care 6 - Baseband Description and Troubleshooting

BB-RF Interface

The below table describes all the signals from the baseband block to the RF block and
back. The signal names are based on the schematics.

Digital signals between BB and RF

For the digital interfaces UPP and Mjoelner use only level shifting IO. Level shifters of
both are supplied with VIO from UEMK. VIO limits are specified in chapter 5.3 and have
been used to calculate the limits below (because VIO

V

and not the limit from UPP which would have been 1.26V).

DDSmin

Values are referenced to GND unless otherwise specified.

Table 14: RF-BB interface digital signals

Signal name From To Parameter Min Typ Max Unit Notes

RFICCNTRL (2:0) Mjoelner control bus

is 1.72V this was used for UPP

min

RFBUSEN1
RFICCNTRL(2)

RFBUSDA
RFICCNTRL(1)

RFBUSCLK
RFICCNTRL(0)

UPP
RFBUSEN1
X

UPP
RFBUSDA

UPP
RFBUSCLK

Mjoelner
RFBUSENX

Mjoelner
RFBUSDA

Mjoelner
RFBUSCLK

Logic
"1"

Logic
"0"

Logic
"1"

Logic
"0"

Logic
"1"

Logic
"0"

Clock Speed 13 MHz

Mjoelner input
UPP output

Mjoelner input
UPP output

Mjoelner input
UPP output
Mjoelner out­put
UPP input

Mjoelner input
UPP output
Mjoelner out­put
UPP input

Mjoelner input 1.22 V RF bus clock.

UPP output 1.37 1.88 V

Mjoelner input 0 0.4 V

UPP output 0 0.40 V

1.22

1.37 1.88VV

0
0

1.22

1.37

1.32

1.32

0
0
0
0

0.4

0.40VV

1.88

1.88

0.4

0.40

0.4

0.51

V
V
V
V

V
V
V
V

RF Chip select.
Active Low

RF serial data.
(bi-direc­tional)

RF serial data.
(bi-direc­tional)

GENIO (28:0) General purpose I/O

TXP
GENIO(5)

UPP
GENIO5

Mjoelner
TXP

Logic
"1"

Logic
"0"

Mjoelner input 1.22 V Transmitter

UPP output 1.37 1.88 V

Mjoelner input 0 0.4 V

UPP output 0 0.40 V

power control
enable.

Issue 3 05/2004  2004 Nokia Corporation. Page 33

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6 - Baseband Description and Troubleshooting Nokia Customer Care

Table 14: RF-BB interface digital signals

Signal name From To Parameter Min Typ Max Unit Notes

RESET
GENIO(6)

UPP
GENIO6

Mjoelner
RESET

Logic
"1"

Logic
"0"

Mjoelner input 1.22 V Reset to RF

UPP output 1.37 1.88 V

Mjoelner input 0 0.4 V

UPP output 0 0.40 V

chip.
Active low.

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Nokia Customer Care 6 - Baseband Description and Troubleshooting

Analog signals between BB and RF

The values indicated in the table below are input requirements of the device in the "to
column" when nothing else is stated. Values are referenced to GND unless other wise
specified.

Table 15: RF-BB interface analog signals

Signal name From To Parameter Min Typ Max Unit Notes

Clock System clock for phone

RFCLK Mjoelner

REFOUT

RFCONV (9:0) RF / BB analogue signals

RXIINP
RFCONV(0)
RXIINN
RFCONV(1)
RXQINP
RFCONV(2)
RXQINN
RFCONV(3)

TXIOUTP
RFCONV(4)
TXIOUTN
RFCONV(5)
TXQOUTP
RFCONV(6)
TXQOUTN
RFCONV(7)

Mjoelner
RXIP
Mjoelner
RXIM
Mjoelner
RXQP
Mjoelner
RXQM

UEMK
TXIOUTP
UEMK
TXIOUTN
UEMK
TXQOUTP
UEMK
TXQOUTN

UPP
RFCLK

UEMK
RXIINP
UEMK
RXIINN
UEMK
RXQINP
UEMK
RXQINN

Mjoelner
TXIP
Mjoelner
TXIN
Mjoelner
TXQP
Mjoelner
TXQN

Frequency 26 MHz System clock

Duty cycle 40 60 %

Signal amplitude 0.3 1.32 Vpp Upp input req.

Setling time 5.0 ms VR3 on to sta-

Max input
Voltage swing

Nominal Voltage swing V

Input DC level 1.3 1.35 1.4 Vdc

Signal frequency 67,7 KHz

Input BW 270.83KHz

Max Differential output
swing (ref. TxIN)

Input diff. Swing
(ref. TxIN)

DC level 1.0 1.1 1.25 Vdc

Source impedance 200 W

Signal frequency 67,7 KHz

-20 +20 ppm

ble clock @
UPP input

1.35 1.4 1.45 Vpp Differential
complex RX
BB signal

2.15 2.2 2.25 Vpp Differential
complex TX

1.0 Vpp

signal (pro­grammable
voltage swing)

RFAUXCONV(2:0) RF / BB analogue control signals

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Table 15: RF-BB interface analog signals

Signal name From To Parameter Min Typ Max Unit Notes

TXC
RFAUX­CONV(0)

UEMK
AUXOUT

Mjoelner
TXC

Output voltage 0 -

0.1

Source impedance 200 W

Resolution 10 Bits

Reference Auxref

(VrefRF01
?)

Power coef. Range. 0,05 0,94 Vtxc/

Recom. Power Coef.1 @
pwr.lvl.5 (0 pcn)

Recom.Power Coef. @
pwr.lvl.19 (15 pcn)

Recom.Power Coef @
Base level

0,7 0,9 Vtxc/

0,1 0,2 Vtxc/

0,1 0,2 Vtxc/

2,4 -

2.55

VTransmitter

Vtxc_m
ax

Vtxc_m
ax

Vtxc_m
ax

Vtxc_m
ax

power control

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Nokia Customer Care 6 - Baseband Description and Troubleshooting

Voltage regulators in BB for RF

Values are referenced to GND unless otherwise specified.

Table 16: Voltage supplies and references

Signal name From To Parameter Min Typ Max Unit Notes

Regulators RF regulators

VR1A UEMK

VR1A

VR2 UEMK

VR2

VR3 UEMK

VR3

Mjoelner
VDDCP

Mjoelner
VDDTX
VDDDIG

Mjoelner
VDDXO
VDDBBB

UEMK Output Voltage 4.6 4.75 4.9 V Supply to :

Mjoelner Input Voltage 2.64 2.78 4.9 V

UEMK output Load Cur­rent

UEMK Load Capacitance 800 1000 1200

Settling Time 300+t

UEMK Output Voltage 2.70 2.78 2.86 V Supply to TX -

Mjoelner Input Voltage 2.64 2.78 2.86 V

Load Current 0.1 3) 100 mA

Load Capacitance 800 1000 1200

Settling Time 10 µs Sleep to

UEMK Output Voltage 2.70 2.78 2.86 V Supply to :

0(3) 5 mA

nF

(4)

20 600 mΩ ESR

d

2

(4)

20 600 mΩ ESR

µs Sleep to

nF

Charge pump

Active

chain Modula­tor digital
contl logic

Active

XO and base­band buffer

VR4 UEMK

VR4

Mjoelner
VDDRXBB

Mjoelner Input Voltage 2.64 2.78 2.86 V

Load Current 0.1 (3) 20 mA

Load Capacitance 800 1000 1200

(4)

20 600 mΩ ESR

Settling Time 100 µs Off to on

10 ? µs Sleep to

UEMK Output Voltage 2.70 2.78 2.86 V Supply to :

Mjoelner Input Voltage 2.64 2.78 2.86 V

Load Current 0.1 (3) 50 mA

nF

Active

RX baseband
section

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6 - Baseband Description and Troubleshooting Nokia Customer Care

Table 16: Voltage supplies and references

Signal name From To Parameter Min Typ Max Unit Notes

VR5 UEMK

VR5

Mjoelner
VDDPRE
VDDLO
VDDPLL

UEMK Output Voltage 2.70 2.78 2.86 V Supply to :

Mjoelner Input Voltage 2.64 2.78 2.86 V

Load Current 0.1 (3) 50 mA

Load Capacitance 800 1000 1200

(4)

nF

Prescaler,
deviders,
LO buffers, PLL
counters

20 600 mΩ ESR

Settling Time 10 µs Sleep to

Active

VR6 UEMK

VR6

Mjoelner
VDDRXF

UEMK Output Voltage 2.70 2.78 2.86 V Supply to :

Mjoelner Input Voltage 2.64 2.78 2.86 V

RX frontend

Load Current 0.1 (3) 50 mA

Load Capacitance 800 1000 1200

(4)

nF

20 600 mΩ ESR

Settling Time 10 µs Sleep to

Active

VR7 UEMK VCO UEMK Output Voltage 2.70 2.78 2.86 V Supply to :

VCO supply voltage

2

range

2.55 2.78 2.85 V

VCO

Load Current 0.1 (3) 45 mA

Load Capacitance 800 1000 1200

Settling Time 10 µs Sleep to

VIO UEMK

VIO

Mjoelner
VDDDL

UEMK Output Voltage 1.72 1.88 1.88 V Supply to:

Mjoelner Input Voltage 1.71 1.8 1.88 V

Load Current 0.1 (3)

Load Capacitance

Settling Time

References RF References

nF

(4)

20 600 mΩ ESR

Active

RF-BB inter­face level

(3)

5

mA

shifter

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Nokia Customer Care 6 - Baseband Description and Troubleshooting

Table 16: Voltage supplies and references

Signal name From To Parameter Min Typ Max Unit Notes

VREF1 UEMK

VREF01

Mjoelner
VBEXT

UEMK Output Voltage 1.3341.35 1.366 V Used inside

MJOELNER as

Mjoelner Input Voltage 1.3251.35 1.375 V

Load Current (3) 100 mA

Load Capacitance 800 1000 1200

(4)

Settling Time µs Sleep to

nF

1.35V refer­ence

Active

Issue 3 05/2004  2004 Nokia Corporation. Page 39

RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

System Connector Interface

System connector

The system connector in RH-19/RH-50 (and several other DCT-4 products) is called Pop­PortTM system connector. It is a galvanic interface between phone and accessories.

Compared with previous system connector versions, four new functions are introduced
with the PopPortTM system connector interface:

• Accessory Control Interface (ACI)

•Power Out

• Stereo audio output

• Universal Serial Bus (USB).

USB functionality and stereo audio output of the Pop-port are not supported in RH-19/
RH-50.

Note: MBUS function, (included in previous accessory interfaces, e.g. DCT-3) is no more supported by PopPort
interfaces.

PopPortTM system connector is mechanically and electrically not backward compatible
with any earlier Nokia accessory interfaces, except the charger connector.

Figure 15: PopPortTM system connector

ACI

Vout

Charge

Charge GND

Shielding GND

Fbus TX

Fbus RX

DATA GND

XMIC P

XMIC N

HSEAR P

HSEAR N

Shielding GND

Page 40  2004 Nokia Corporation. Issue 3 05/2004

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Nokia Customer Care 6 - Baseband Description and Troubleshooting

Table 17: System connector interface description

Pin # Signal Notes

1VCHAR

2 GND Charge ground

3 ACI Insertion & removal detection /

Serial data bi-directional 1 kbit/s

4Vout

5 Not used in RH-19/RH-50

6 FBUS_RX Serial data from accessory to phone / 115 kbit/s

7 FBUS_TX Serial data from phone to accessory / 115 kbit/s

8 GND Data ground

9 XMIC N Negative audio in signal

10 XMIC P Positive audio in signal

11 HSEAR N Negative audio out signal.

Max bandwidth from the phone

12 HSEAR P Positive audio out signal.

Max bandwidth from the phone

13 Not used in RH-19/RH-50

14 Not used in RH-19/RH-50

Accessory control interface (ACI)

ACI is a point-to-point, master-slave, and bi-directional serial bus. It has three features:

• The insertion and removal detection of an accessory device

• Acting as a data bus, intended mainly for control purposes

• The identification and authentication of accessory type which is connected

The accessories are detected by the HeadInt signal when the plug is inserted.

Normally, when no plug is present, the pull-up resistor 100k pulls up the HeadInt signal
to VFLASH1. If the accessory is inserted, the external "insertion & removal" resistor works
as voltage divider and decrease the voltage level below the threshold Vhead.

Thereby the comparator output will be changed to high state causing an interrupt.

If the plug is removed, the voltage level of HeadInt increases again to VFLASH1. This
voltage level is higher than the threshold of the comparator and thereby its output will
be changed to low. These changes lead to an interrupt.

These HeadInt interrupts are initiated the accessory detection or removal sequence.

TM

If no accessory inserted / connected the only active part on the PopPort

interface is

Issue 3 05/2004  2004 Nokia Corporation. Page 41

RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

the ACI line.

Figure 16: Principle schematics of ACI accessory and engine

Signal flow on ACI line - ACI-ASIC accessory inserted

Figure 17: ACI communication

V

headInt

V

FLASH1

V

head_min

V

aci_detect

1

V

high

V

low

2

a

2

1

a

RESET

4

3

Learning Sequence

5

1. Accessory is connected (insertion & removal resistor connect to ACI line)

1a) phone gets HeadInt interrupt after 20ms check that ACI line is still low (<Vhead min)

2. Connect MBUS with HeadInt line (MBUS switch)

2a) If the phone detect a HeadInt interrupt from low to high transition in 20ms time­frame, then an advanced accessory is connected

Normal

ACI communication

7

6

9

a

9

8

3. ACI chip reset (3000- 4000us)

4. Power up delay (50-400us)

5. Start bit (50us)

Page 42  2004 Nokia Corporation. Issue 3 05/2004

Company Confidential RH-19/RH-50

Nokia Customer Care 6 - Baseband Description and Troubleshooting

6. Learning sequence (567-1700us)

7. ACI communication

8. MBUS is disconnected from HeadInt line (MBUS switch). After every communication.

9. Accessory is removed (no insertion & removal resistor on ACI line) --> phone gets
HeadInt interrupt from ACI line low to high transition.

9a) If no HeadInt interrupt comes in the next 100ms the accessory is really removed and
the phone goes in the state "no accessory".

Table 18: Voltage Levels

Signal Min Typ Max Unit Note

V

FLASH1

V

head

Specified values
for levels

V

ACI_detect

2.7 2.78 2.86 V

1.75 1.9 2.05 V

Min Typ Max Unit Note

0.83 1.13 V Voltage level if MBUS not connected
to HeadInt (MBUS switch open), but
ACI accessory is inserted.

V

high

2.45 2.71 V Voltage level after MBUS connected to
HeadInt.

V

low

<0.22*VDD V

Signal flow on ACI line - Non ACI-ASIC accessory inserted

Figure 18: Signal flow on ACI line

V

headInt

V

FLASH1

V

head_m in

1

20ms

2

1

a

V

low

3

Mono Headset is

recognized.

3

a

4

a

4

1. Accessory is connected (insertion & removal resistor connect to ACI line)

1a) phone gets HeadInt interrupt after 20ms check that ACI line is still low (<Vhead min)

2. Connect MBUS with HeadInt line (MBUS switch)

3. The 20 ms timer elapsed and no transition has been on HeadInt line

3a) Disconnect MBUS from HeadInt line

Issue 3 05/2004  2004 Nokia Corporation. Page 43

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6 - Baseband Description and Troubleshooting Nokia Customer Care

4. Accessory is removed. Phone gets HeadInt interrupt from ACI line low to high transi­tion.

4a) If no HeadInt interrupt comes in the next 100ms the accessory is really removed.

FBUS

FBUS is an asynchronous data bus with separate TX and RX signals. Default bit rate of
the bus is 115.2 Kbit/s.

FBUS is used as additional communication channel from phone to accessory and vice
versa. There is two types of accessories which it uses:

1. Nokia Serial Bus Accessory, AT mode

2. Fbus Phonet mode accessory

From HW-point of view, this does not make any difference.

Table 19: FBUS interface

Signal Parameter Min Typ Max Unit

FBUS_RX V

FBUS_TX V

IH

V

IL

OH

V

OL

1.95 2.78 3.0 Volt

0 0.2 0.83

1.95 2.78 2.83

0 0.2 0.83

VOUT (Accessory Voltage Regulator)

DCT4 chip set does not provide and power supply for accessories. To enable this an exter­nal LDO regulator is needed. This regulator is called "Accessory Regulator".

The regulator input is connected directly to battery voltage VBAT and the output to VOUT
pin at system connector. The regulator is controlled by the GENIO(0) line of UPP. With
this signal the regulator can be switched on and off.

The regulator can be supply up to150 mA.

Note: This exceeds the PopPortTM minimum requirement.

Page 44  2004 Nokia Corporation. Issue 3 05/2004

Company Confidential RH-19/RH-50

Nokia Customer Care 6 - Baseband Description and Troubleshooting

Figure 19: Accessory power supply diagram

TM

VOUT

0.9R

UPP

GenIO(0)

VBAT

Voltage

regulator

En

LP3985

Tomahawk

PopPort

bottom connector

DC resistance of ferrite
+ impedance of line and connector

Table 20: Accessories Power Supply

Signal Min Nom Max Unit Note

Vout

GenIO(0) 1.4 1.88

2.63
2,56

2.80 2.88 V I = 70mA
Imax = 150mA

0.6 V High (ON)

0.6

Low (OFF)

The pull-down resistor on the enable input of the regulator is needed because in the
switch-off mode of the phone, the output level of the Genio(0) is not defined. Without
this resistor's the output of the regulator can be floating.

RH-19/RH-50 supports fully differential external audio signals. A headset can be con­nected to the Pop-port system connector. However, only Mono audio is supplied to
accessories.

HookInt

This signal is used to detect whether a button in accessory is pressed or not. The hook
signal is generated by creating a short circuit (20 ohm) between the headset microphone
signals (XMICP and XMICN). In this case, an LP-filter is needed on the HookInt input to
filter the audio signal.

If no accessory is present, the HookInt signal is pulled up by the UEMK resistor.

If an accessory inserted and the microphone path is biased the HookInt signal decreases
to 1.9V due to the microphone bias current flowing through the resistor. When the but­ton is pressed the microphone signals are connected together, and the HookInt input will
get half of micbias dc value 1.1V. This change in DC level will cause the HookInt compar­ator output to change state, in this case from 0 to 1.

HookInt comparator reference is selected level is 1.35 V.

Normally micbias and hookint are enabled only when audios are routed to headset.

In order to recognize the Hook signal (button in headset or SyncButton in deskstand),

Issue 3 05/2004  2004 Nokia Corporation. Page 45

RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

during the phone is in the sleep mode, it must be done by polling. That means the
micbias and the hookInt signal must be enabled in regular time intervals.

Table 21: Voltage Levels Hook Int

Signal Min Nom Max Unit Note

VFLASH1 2.7 2.78 2.86 V

MICB2 2.0 2.1 2.25

600

Vhook1 1.25 1.35 1.45 V

Charging

RH-19/RH-50 can be charged via a DC-plug or charging pins on the system connector.
Furthermore, it supports only 2-wire charging.

DC-plug

Like most Nokia phones, RH-19/RH-50 uses a 3.5mm DC-plug. Nevertheless, it is possible
to use a 3-wire charger, but the PWM inside these chargers is not supported.

VCHAR pins of system connector

The VCHAR and ChargeGND pin are directly connected to the normal charger lines of the
DC-plug.

Table 22: Charger Input Voltage Levels

Signal Min Nom Max Unit Note

Input voltage range
(fast charger)

5.5 8.4 9.3 VRMS I= 850mA

V
uA

Input voltage range
(standard charger)

11 . 1

7.9

-0.3 20 V Absolute maximum VHAR voltage

16 Vpeak

VRMS

Page 46  2004 Nokia Corporation. Issue 3 05/2004

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Nokia Customer Care 6 - Baseband Description and Troubleshooting

Voltages and currents

Table 23: System connector interface signals

Pin # Signal Parameter Min Typ Max Unit Notes

1 VCHAR 0 9

0.85

2 GND Charge ground

3 ACI Logic "0" 0 0.2 0.7 V Insertion & removal detection /

Logic "1" 1.7 2.78 2.86

4 Vout Output voltage 2.56 2.8 2.88 VDC 70mA is specified as the max. cur-

Current 70 150 mA

5 Not used in RH-19/RH-50

6 FBUS_RX Logic "0" 0 0.2 0.86 V Serial data from accessory to phone

Logic "1" 2.0 2.78 3.0

7 FBUS_TX Logic "0" 0 0.2 0.81 V Serial data from phone to accessory

Logic "1" 1.89 2.78 2.83

8 GND Data ground

9 XMIC N Differential

voltage swing

DC level ? ? ? VDC

10 XMIC P Differential

voltage swing

1 Vpp Negative audio in signal

1 Vpp Positive audio in signal

VDC
ADC

Serial data bi-directional 1 kbit/s

rent in the Pop-port specification

/ 115 kbit/s

/ 115 kbit/s

DC level 2.05 2.1 2.25

400

11 XEAR N Differential

voltage swing

12 XEAR P Differential

voltage swing

13 Not used in RH-19/RH-50

14 Not used in RH-19/RH-50

1 Vpp Negative audio out signal.

1 Vpp Positive audio out signal.

VDC
uA

Max bandwidth from the phone

Max bandwidth from the phone

(grounded)

(grounded)

Issue 3 05/2004  2004 Nokia Corporation. Page 47

RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

Baseband Calibration

Energy management calibration

Dispersion in UEM AD-converters and external components must be compensated.

EM Calibration is used for calibrating battery and charger settings of the phone.

Table 24: BB Calibration limits

AD channel Min Max

ADC OFFSET -100 100

ADC GAIN 25400 29000

BSI GAIN 860 1180

BTEM GAIN 1980 2280

VBAT SCAL

OFFSET

VBAT SCAL 10000 11000

VCHAR 58000 62000

ICHAR GAIN 3850 4950

Calibration method with JBV-1

Calibration is easiest done by using JBV-1 box in conjunction with Phoenix Service SW

Preparation for EM Calibration:

• Connect DC Cable SCB-3 between JBV-1 and Vin of Phone for Charger calibration.

• Connect 12…15 V from Power Supply to JBV-1.

• NOTE! Check that connection is F-BUS (does not work with M-BUS!).

Select Maintenance => Tuning => Energy Management Calibration.

2300 2900

Energy Management values to be calibrated are checked.

Select “Read from Phone” to show the current values in the phone memory and to check
that the communication with the phone works.

Page 48  2004 Nokia Corporation. Issue 3 05/2004

Company Confidential RH-19/RH-50

Nokia Customer Care 6 - Baseband Description and Troubleshooting

Select “Calibrate” to run the selected calibrations.

Calibration method without JBV-1

Calibration for RH19/RH-50 must be done in LOCAL-mode.

ADC-converter calibration is made with two different calibration points.

• Connected 0.7V to BSI line -> read AD-converter value.

• Connected 2.1V to BSI line -> read AD-converter value.

• SAVE VALUE to PMM (Permanent Memory) area.

BSI calibration is made in order to get correct battery information.

• Set to BSI line 1% 68kohm resistor -> read AD-converter value.

• SAVE VALUE to PMM (Permanent Memory) area.

VBATT calibration is made in order to get correct battery voltage.

• Set to VBATT line 3.1V and 4.2V -> read AD-converter value.

• SAVE VALUE to PMM (Permanent Memory) area.

VCHARGE calibration is made in order to get charger types and charger voltages correct.

• Connect 8.4V to charger line -> read AD-converter value.

• SAVE VALUE to PMM (Permanent Memory) area.

Charge current calibration is made order to get correct charge current.

• Connect 500mA to charger line -> read AD-converter value.

If values shown are within limits select “Save To Phone” to save the values in the phone.

Note: Only the values of the checked tunings (Battery size, Battery Temperature etc.) are saved.

Issue 3 05/2004  2004 Nokia Corporation. Page 49

RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

Close the “Energy Management Calibration” – dialog to end tuning.

You must manually switch the phone on after exiting “Energy Management Calibration”
dialog.

LCD contrast tuning

Extra equipment not needed

This function is used to calibrate the LCD Contrast

Must be done when LCD module is replaced and there is a considerable difference in the
contrast!

Select TEST mode if not already selected.

Select Maintenance => Testing => Display Test

Select Test =>Pattern test

Select Test Pattern => Chess pattern

Select Lights => Display

Select => Send To Phone.

Page 50  2004 Nokia Corporation. Issue 3 05/2004

Company Confidential RH-19/RH-50

Nokia Customer Care 6 - Baseband Description and Troubleshooting

Select Maintenance => Testing => Display Tune

Press “Default” button and following default values will be set;

“Contrast offset slider” is set to 0% (See picture below)

“Contrast Factory offset” slider is set 41

Tune the Contrast by using “Contrast Factory offset” slider.

Close the “Display Tune” – dialog to end tuning.

Check the contrast from the Phone UI.

Check that the brightness has been set to default from Phone’s menu 4-4-5

Issue 3 05/2004  2004 Nokia Corporation. Page 51

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6 - Baseband Description and Troubleshooting Nokia Customer Care

Baseband Testpoints

List and description

Table 25: RH-19/RH-50 test points

Signal Test point Function Characteristics Note

FBUSTX J411 Flash programming data

and phone control

FBUSRX J412 Flash programming data

and phone control

BSI X103 Battery size indicator

Local mode indicator

BTEMP J102 Battery temp. indicator About 0.8V at 25ºC

VSIM X387, pin 3Power supply for SIM card 1.8V or 3V Depends on the SIM card

PURX J402 Power up reset 1.8V digital signal From UEM to UPP

SLEEPX J403 Sleep mode control signal 1.8V when key is pressed

SLEEPCLK J404 Sleep mode timing clock 32.768kHz digital clock 1.8V

CBUSDA J407 Serial control bus data

input/output

CBUSENX J408 CBUS enable signal 1.8V digital signal From UPP (MCU) and UEM

RFCLK R420 System clock for Baseband 26 MHz analog clock signal

1.8V during read phone
information 1.8V digital sig­nal

1.8V during read phone
information 1.8V digital sig­nal

1V in normal mode
0V in local mode

1.8V digital signal Between UPP (MCU) and UEM

>300 mVpp

From phone to FPS-8/PC

From FPS-8/PC to phone

To UEM A/D converter

Controlled by MCU

Controlled by MCU

RESX J308/V301 LCD reset 1.8V digital signal From UPP to LCD driver

CSX J311/R310 LCD chip select 1.8V digital signal From UPP to LCD driver

DBUSCLK J413 DBUS clock 13 MHz digital clock signal

1.8V

VBATT X103 3.7V

VIO C207 1.8V

VCORE C208 1.5V

VANA C206 2.8V

VR3 C227 2.8V in local mode

2.8V pulse in normal mode

VFLASH1 C205 2.8V

VDD J314/C300 2.8V Measurement not possible in

VDDI J315/C301 1.8v Measurement not possible in

ROW0 J320 1.8V From Z300 to Vol.-key

ROW1 J321 1.8V From Z300 to Vol.-key

From UPP (DSP) to UEM
Generated by UPP

AMS-Jig

AMS-Jig

Page 52  2004 Nokia Corporation. Issue 3 05/2004

Company Confidential RH-19/RH-50

Nokia Customer Care 6 - Baseband Description and Troubleshooting

Table 25: RH-19/RH-50 test points

Signal Test point Function Characteristics Note

COL0 J325 1.8V pulse From Z300 to Vol.-key

EMU1 J488 Emulator 1 Digital signal

JTRst J481 JTAG Reset Digital signal

STIClk J472 STI Clk Digital signal

STIRxD J473 STI Receive Digital signal

JTDI J482 JTAG TDI Digital signal

JTDO J484 JTAG TDO Digital signal

UEMINT J405 UEM Interrupt Digital signal

DBUSEN1xJ415 DBUS Enable Digital signal

EMU0 J487 Emulator 0 Digital signal

JTClk J486 JTAG Clk Digital signal

JTMS J480 JTAG TMS Digital signal

FLS2CSX J418 Flash 2 Chip Select Digital signal

DBUSDA J414 DBUS Data Digital signal

Issue 3 05/2004  2004 Nokia Corporation. Page 53

RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

Testpoints on bottom side

BSI Values:

BSI - GND

0 Ohm - BR5C Battery

3.3k - Local M ode

6.8k - Test Mode

68k - BL4C Battery

75k - BL5C Battery

CSX

BSI

VBATT

VR4

2,78V

VR5

2,78V

VR3

2,78V

VR7

2,78V

VR6

2,78V

VR2

2,78V

VCORE

1.5V

VFLASH2

2,78V

VIO

1.8V

VANA

2,78V

VSIM

1,8 / 3,0V

GND

FBUSRX

MBUS

FBUSTX

VPP

14

GND

J423

J421

RFBUSCLK

RFBUSEN1

J424

J422

RESET

RFBUSDA

J407

J406

J403

J410

J411

J409

J408

J473

J472

J412

CBUSENX

STIRX

STICLK

SLEEPX

FBUSTX

CBUSCLK

X387

SIMDATA

6

NC

GND

4

J416

J419

J420

J103

J417

J107

J108

Tomahawk

1

SIMCLK

1

SIMRST

VSIM

3

FBUSRX

MBUSTX

CBUSDA

MBUSRX

J109

J110

J404

SLEEPCLK

J405

UEMINT
DBUSEN1X

J415

J413

DBUSCLK
PURX

J402

FLS2CSX

J418

DBUSDA

J414

VBAT

3,6V

26 MHz

RFCLK

VFLASH1

2,78V

VR1A

4,75V

32,6 kHz

Sleep CLK

FLSCLK

J416

EXTWRX

J419

J420

FLSCX

J103

J417

EXTRDX

5 n.c.

8 GND

13 n.c.

14 n.c.

9 XMICN

11 XEARN

10 XMICP

12 XEARP

4 VOUT

7 FBUS TX

3 ACI

2 GND

6 FBUS RX

1 VCHAR

Page 54  2004 Nokia Corporation. Issue 3 05/2004

Company Confidential RH-19/RH-50

Nokia Customer Care 6 - Baseband Description and Troubleshooting

Testpoints on top side

J312

J303

J106 J111

GND

J301

J314

J302

J308

J315

J310

J311

J101

J309

J100

VBATT

BSI

J112

J401

J321

J200

J320

LED's

J323

J332

J316

J317

J333

J330

J318

J322

J331

5

2

3

J

J329

J104

J326

J327

J328

J324

Issue 3 05/2004  2004 Nokia Corporation. Page 55

RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

Baseband Troubleshooting

This document outlines the various possibilities that may be encountered with respect to
the repair of the RH-19/RH-50 product (3100/3100b). It covers only the baseband parts
of the product, for problems within the RF parts, please refer to the RF trouble-shooting
guide. The document describes the necessary test equipment required to debug problems
and also advises on possible routes that can be taken to solve the problem under investi­gation.

It is assumed that when using the flow diagrams in this document, it is in conjunction
with the layout sheets, thus grid locations to the left of the flow diagrams reference
these sheets.

In addition, grid references are labeled normally if they are on the bottom-side of the
layout and marked with ‘#’ in case they are on the topside of the layout. (Topside is the
side with keypad and display connector)

Note: Values listed are specified values. These values have tolerances that should be taken into consideration
when making measurements.

Page 56  2004 Nokia Corporation. Issue 3 05/2004

Company Confidential RH-19/RH-50

Nokia Customer Care 6 - Baseband Description and Troubleshooting

Top level flowchart

START

Top

No

Is the Phone

totally dead?

No

Does the Flash

programmming

work?

Yes

The phone

wont start up

or is jammed?

Yes

No

Yes

RETEST

Phone is

dead

Flash

faults

Phone is

jammed

No

Does the

charging work?

Yes

No

Charger

Top2

Issue 3 05/2004  2004 Nokia Corporation. Page 57

RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

Top2

Does Phone

read the SIM

card?

Yes

No

SIM card

Audio

faults?

No

Has the display

or LEDs a

problem?

No

Does the

Keypad work?

Yes

Yes

No

Audio
faults

Display

faults

Keypad

faults

Yes

END

Page 58  2004 Nokia Corporation. Issue 3 05/2004

Company Confidential RH-19/RH-50

Nokia Customer Care 6 - Baseband Description and Troubleshooting

Phone is dead

Comp Value Grid

Loc.

Phone is

dead

Is VBAT=3.7VDC

(meas. on X103)?

Yes

Is voltage

=3,7VDC at L260 - L265,

C260 - C265?

Yes

No

No

Failure in

VBAT line,

check: X103

Check: L260 -

L265,

C260 - C265

C260 1u0 J 7

C261 1u0 K 6

C262 1u0 J 7

C263 1u0 J 7

C264 1u0 J 7

C265 1u0 J 8

L260 600R/100

MHz

L261 600R/100

MHz

L262 600R/100

MHz

L263 600R/100

MHz

L264 600R/100

MHz

L265 600R/100

MHz

I 7

K 6

I 7

I 7

I 7

I 8

Is Pin 1 on

S302 "high" when

power key is not

pressed?

Yes

Is Pin1 on

S302=0VDC when

power key

is pressed?

Yes

Dead2

No

No

Check R306,

C310

Comp Value Grid

Loc.

R306 27k B 5

C310 22p B 5

Check S302,

PWB

Retest

Issue 3 05/2004  2004 Nokia Corporation. Page 59

RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

Dead2

Is Sleep CLK on

J404 = 32.8kHz,

1.8Vpp?

Yes

on J402 1sec. after

Is VR3=2.78VDC

Is

PURX=1.8VDC

power key

is pressed?

Yes

seen at C227?

See Waveform 1

No

No

No

Check: B200,

C209, C210,

PWB then

replace D200

Replace D200,

PWB

Check C227
then replace

D200, PWB

Comp Value Grid

Loc.

B200 32.768 kHz M 6

C209 10p M 6

C210 10p N 6

Yes

Comp Value Grid

Loc.

Is there a

26MHz clock

(typ) 850mVpp

at R420?

No

Check R426,

R420, C426,

C420

R420 1k0 L 5

R426 1k0 K 5

C420 47p L 5

C426 1n0 K 5

Yes

See Waveform 2

Comp Value Grid

Loc.

C227 1u0 J 7

Phone is

Jammed

Retest

Page 60  2004 Nokia Corporation. Issue 3 05/2004

Company Confidential RH-19/RH-50

Nokia Customer Care 6 - Baseband Description and Troubleshooting

Flash faults

Flash
faults

Measure

Does the phone set the

Fbus TXD

at J411 line high after

the startup?

No

Yes

Yes

BSI pulse during

Flash programming.

Is it OK?

Yes

Measure
FBUSTX line
during Flash

programming from

testpoint J411.

Is it 1.8V?

No

Check BSI
line, X103,

C100, R202,

C240, R206

No

Comp Value Grid

Loc.

C100 27p F 8

R202 100k L 9

C206 1u0 L 6

C240 10n L 9

Does the phone set

Fbus TXD line

low after the

line has

been high?

No

Flash

faults

2

Yes

Change UPP

Change UPP

Change UEM

Retest

Issue 3 05/2004  2004 Nokia Corporation. Page 61

RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

Flash
faults

2

Is the

manufacturer ID

or Device

ID incorrect?

No

Yes

Change

Combo

Is

he phone totally

dead?

No

Does the phone

not start up

or is the phone

jammed?

No

Retest

Yes

Yes

Phone is

dead

Phone is

jammed

Page 62  2004 Nokia Corporation. Issue 3 05/2004

Company Confidential RH-19/RH-50

Nokia Customer Care 6 - Baseband Description and Troubleshooting

Phone is jammed

Phone

is

jammed

Measure

VIO, VCORE,

VFLASH1,

VANA, VR3 voltages.

Are they

OK?

Yes

Measure

32.8kHz

Sleep Clk

from testpoint J404.

Is it OK?

Yes

See Waveform 3

Goto Part

2

No

Check

VBATT1-6, VIO,

VCORE, VFLASH1,

VANA,

VR3 lines.

Are they ok?

Yes

Measure

32.8 kHz Sleep Clk

from testpoint B200.

Is it OK?

Change UEM

Check L260-L265,

C260-C265,

BSI/BTEMP lines

and VBATT lines

No

Check BSI/BTEMP

lines. If OK UEM

regulators are not

working. Change

UEM.

No

Yes

Check B200,

C209, C210.

Retest

Retest

See Waveform 4

No

Comp Value Grid

L260

L261

L262

L263

L264

L265

600R/100

MHz

600R/100

MHz

600R/100

MHz

600R/100

MHz

600R/100

MHz

600R/100

MHz

C260 1u0 I 7

C261 1u0 K 6

C262 1u0 I 7

C263 1u0 I 7

C264 1u0 I 7

C265 1u0 I 8

Comp Value Grid

Loc.

R420 1k0 L 5

R426 1k0 K 5

C420 47p L 5

C426 1n0 K 5

N601 ASIC H 4

B200

32.768 kHz

M 6

C209 10p M 6

C210 10p N 6

Loc.

I 7

K 6

I 7

I 7

I 7

I 8

Issue 3 05/2004  2004 Nokia Corporation. Page 63

RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

Comp Value Grid

Loc.

R420 1k0 L 5

R426 1k0 K 5

C426 1n0 K 5

Part 2

C420 47p L 5

N601 ASIC H 4

J402 TP N 3

See Waveform 5

Measure

26MHz RFClk

from R420.

Is it O K ?

Yes

Measure

PURX signal

from testpoint

J402. Is it 1.8V?

Yes

Jammed

2

No

Check R420,

C420, R426, C426.

If ok change N601.

Change UEM

Retest

Page 64  2004 Nokia Corporation. Issue 3 05/2004

Company Confidential RH-19/RH-50

Nokia Customer Care 6 - Baseband Description and Troubleshooting

Jammed

2

Phone

shutsdown after

30sec?

No

See Waveform 6

Measure

DBUSClk 13MHz

signal from

testpoint J413.

Is it OK?

Yes

Yes

See Waveform 7

Measure

watchdog signal

CBUSDA f rom

testpoint J407.

Is it ok?

No

Change UPP

No

Check phone

info.

Is it OK?

Yes

Retest

No

See Waveform 8

Measure

FBUSRX signal

during phone info read

from testpoint J412.

Is it OK?

Measure

FBUSTX signal

during phone info read

from testpoint J411.

Is it OK?

Yes

Change UEM

No

Change UEM

No

Change UPP

Issue 3 05/2004  2004 Nokia Corporation. Page 65

RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

Charger

Charger

Connect

charger

(ACP-7E)

Does

Battery bar

work?

Yes

Measure

voltage over (TVS)

V100. Is it
>3.0 Vdc?

Yes

Read

BTEMP value.

(compare it to

ambient

temperature). Is it

~25°C (0319)?

Yes

Remove (fuse) F100

and measure current. Is

it ~350...390 mA?

No

No

No

Check X102,
C106, C110,

F100, L100

and line.

Check R207,

C220, R202,

R106 and line.

Change UEM

Comp Value

Grid
Loc.

V100 # - T 5

C106 # 1n0 S 5

C110 # 22p T 5

F100 # 1.5A S 4

L100 # 42R/100MHz S 5

R207 4k7 N 6

C220 10n N 6

R202 100k L 9

R106 47k O 5

# Topside components

Yes

Retest

Page 66  2004 Nokia Corporation. Issue 3 05/2004

Company Confidential RH-19/RH-50

Nokia Customer Care 6 - Baseband Description and Troubleshooting

SIM card error

SIM

card

Insert

SIM card

faults?

Yes

No

Does phone enter

LOCAL MODE.

VSIM voltage

from X387.

Check SIM

power Up sequency.

OK?

Yes

Measure

Is it 3V?

Yes

Is it OK?

Yes

No

No

No

Check BSI line,

X103, C100, R202,

C240, R206.

If OK change UEM.

Check VSIM line,
X387, C390, C203.
If ok change R388.

If still wrong VSIM

voltage change UEM

Check SIM lines.

If OK change R388.

If still fail change

UEM.

Comp Value

Grid
Loc.

X103 conn G 8

C100 27p F 8

R202 100k L 9

C240 10n L 9

R206 4k7 L 9

X387 conn Q 8

C390 100n R 8

R388 filter O 8

Change UPP

Retest

Issue 3 05/2004  2004 Nokia Corporation. Page 67

RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

Audio faults

Audio

faults

Is HP

earpiece

working?

Yes

No

Set phone in LOCAL

Use Phoenix Audio

Set EXT IN, HP OUT,

LOOP ON

Measure
DC offset

voltagefrom Earpiece

pads. is it ~1.38V

to GND?

changing earpiece.

Is it working

mode.

Test.

Try

now?

No

No

Check L150,
R151, C179,

C180 and line.

If OK change

UEM.

Yes

Comp Value

L150 # 2x1000R

Grid
Loc.

B 5

/100MHz

R151 # 2XVWM

B 5

16V

C179 22p M 5

C180 22p M 5

# Topside components

Audio

faults 2

Yes

Measure

MICB2voltage

from XMICP

pads. Is it ~2.2V

Yes

Earpiece

2

No

Audio
faults3

Retest

Page 68  2004 Nokia Corporation. Issue 3 05/2004

Company Confidential RH-19/RH-50

Nokia Customer Care 6 - Baseband Description and Troubleshooting

Audio

faults

2

Is HP

microphone

worki ng

Yes

Audio

faults

3

No

Yes

Change

microphone.

Is it working

now

No

Set phone in LOCAL mode.

Use Phoenix Audio Test.

Set HP IN, EXT OUT,

LOOP ON.

Measure MICB1 DC

voltage from MICP pads. Is it

>1,0VDC

Yes

No

Comp Value

Grid
Loc.

R153 2x2k2 N 7

C153 55n N 7

C159 33n N 7

C171 1n0 N 7

C172 1n0 N 7

R160 220R O 7

C175 2u2 O 7

C183 2u2 O 7

R156 2k2 O 7

Check R153, R157,

C153, C159, C171,

C172 and line.

If OK change UEM. If

still fail change UPP

Check R160, C152,

C175, C183, R156,

R155, L153, C154

and line. If OK

change UEM

Retest

R155 2XVWM16V S 4

L153 600R/100MHz S 4

C154 22p S 4

Issue 3 05/2004  2004 Nokia Corporation. Page 69

RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

Audio

faults

3

Comp Value

Grid
Loc.

Is Ext-ear

working

Yes

Is Ext-mic

working

Yes

Set Phoenix LOCAL mode.

Select Maintenance -> audio

No

test. Set Ext in IHF/Ext out to

connector. Are they

No

Set Phoenix LOCAL mode.
Select Maintenance -> audio
test. Set Ext in IHF/Ext out to

ON

ON

Measure DC

volts on

speaker pins of

~0,8V DC (to GND)

No

Yes

Check L103, RC109,

C111, R105, C157,
C156, C181, C182,

X101, lines. If ok

Change UEM

change UEM

L103 # 2x1000R

T 7

/100MHz

C111 # 10n S 7

C156 # 22p T 7

C181 22p O 7

C182 22p O 7

R173 220R N 7

C150 4u7 O 7

C176 2u2 O 8

C184 2u2 O 8

R158 820R O 8

R171 1k0 O 8

L102 # 2x1000R/

T 7

100MHz

C107 # 10n S 7

C108 # 10n S 7

R162 2x2k2 N 7

C170 33n N 7

Audio
faults

4

Measure DC volts

on mic pins of

connector. Is it

~2.1V DC (to GND)

Yes

Check R169, R162,

C170, C166, C173,

C174, lines. If ok

change UEM

No

Check R173, C150,
C176, C184, R158,

R171, L102, C107,

C108, X101, lines. If ok

change UEM

Rete st

C166 33n O 7

C173 1n0 N 7

C174 1n0 O 7

R105 # 2XVWM

T 8

16V

C157 # 22p T 8

C109 # 10n S7

# Topside components

Page 70  2004 Nokia Corporation. Issue 3 05/2004

Company Confidential RH-19/RH-50

Nokia Customer Care 6 - Baseband Description and Troubleshooting

Audio
faults

4

Is

IHF speaker

working?

Yes

END

C165, L151, L152

No

Yes

Check C164,

C177, C178,

Vbat. If OK

change N150

Change

speaker.

Is it working

now?

Yes

Measure

DC volts on speaker

pads. Are they

~0.5Vbat (to GND)

No

Measure

Shutdown voltage

on R168. Is it

~1.8V

No

Set Phoenix LOCAL

mode.

Select Maintenance ->

audio test. Set Ext in

IHF/Ext out on ON

Yes

Check C155, C158;

C162, R167, R164,

R163, C161, lines. If ok

change N150

No

Check R168, line.

If OK change

N150. If still faulty

change UEM.

Comp Value

Grid
Loc.

C155 33n N 6

C158 100n N 6

C162 100n N 6

R167 10k N 6

R164 2x2k2 N 6

R163 18k N 6

C161 1n0 N 6

N150 - O 6

C164 22p N 6

C165 22p N 6

L151 240R/

E 3

100MHz

Retest

L152 240R/

100MHz

E 3

C177 47p E 3

C178 47p E 3

R168 100k O 5

Issue 3 05/2004  2004 Nokia Corporation. Page 71

RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

Earpiece fault

Earpiece

2

Connect EXT audio signal 1kHz

(sine 200mVpp) to XMICP pads and

Ground on XMICN. Set up Phoenix

Audio test as shown in diagram 1

Measure

sine signal from

earpiece pads. Is

it ~320mVpp

Yes

See Waveform 9

Change UPP

No

Mesure sine

signal at UEM

(R172). Is it

~200mVpp

Yes

Change UEM

Retest

No

Check R162, C170,

C166, C174, C173 and

line.

Comp Value Grid

Loc.

R172 27k N 7
R162 2x2k2 N 7

C170 33n N 7
C166 33n O 7
C174 1n0 O 7
C173 1n0 N 7

Page 72  2004 Nokia Corporation. Issue 3 05/2004

Company Confidential RH-19/RH-50

Nokia Customer Care 6 - Baseband Description and Troubleshooting

Display fault

Set phone into local mode.

Display

faults

Set VBATT 4.2V. Start

display test with Phoenix.

Set display and keypad

lights on.

Check N300

Measure

signal from N300

pin 4. Is it

~18.5V?

No

Measure

voltage from

N300 pin 8. Is

it ~4V?

No

Are the LEDs

turned on?

Yes

No

Check R300

and X302

pin9,10

Check control

signal line if

ok. If yes,

change UEM.

Yes

Display

faults 2

Comp Value

Grid
Loc.

N300 - N 9

R300 27R N 9

L300 22uH N 8

V300 - N 8

X302 conn B 7

Yes

Measure

supply voltage

at N300 pin1.

Is it ~4V?

Yes

Measure

resistance

between pin 1 and

2 of N300. Is it

<0.6Ohm?

No

No

Yes

Check battery

and line.

change N300

Check L300

and V300

Retest

Issue 3 05/2004  2004 Nokia Corporation. Page 73

RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

Display

faults

2

Does

the display

work?

Yes

No

Measure

VDD (2.78V)

and VDDI (1.8V).

Is it OK?

Yes

Change

UI module. Is it

worki ng?

No

Check X302

No

Change UEM

Yes

Change the UI module.

Open Phoenix, enter Test mode and

goto Testing > Lights > Display >

Select Test > Contrast Test. Set the

height and width values to 128

respectively.Then click Send to Phone

Is there a clear

difference on the

Grey scale?

Yes

Goto Testing > Display

Tune > Contrast Factory

No

Offset

End

Comp Value

X302 conn B 7

Grid
Loc.

Measure

RESX, CSX.

Is it ~1.8V?

Yes

No

Check X302

and lines. If

OK, change

UPP.

Adjust the value with the
right and left keys, to get

correct display contrast

Retest

Page 74  2004 Nokia Corporation. Issue 3 05/2004

Company Confidential RH-19/RH-50

Nokia Customer Care 6 - Baseband Description and Troubleshooting

Keypad fault

Keypad

faults

Is the

power key

working?

Yes

No

Measure

voltage from S302

when power key

is pressed.

Is it high?

No

Measure

voltage from S302.

Is it 3.7V?

Yes

Yes

Check

S302.

Is it OK?

No

No

Check R306, C310,

S302 and line.

If OK change UEM

Yes

Phone is

dead

Keypad

faults

2

Phone is

jammed

Change S302

Retest

Comp Value Grid Loc.

S302 switch B 6

R306 27k B 5

C310 22p B 5

Issue 3 05/2004  2004 Nokia Corporation. Page 75

RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

Keypad

faults

2

Are keys working?

Yes

No

Measure

SLEEPX signal

from J403 when key is

pressed.

Is it 1.8V?

Yes

When

keypad is pressed,

the LEDs are turned

on?

No

Check lines. If still

failing change UPP.

No

Comp Value

Grid
Loc.

J403 TP L 4

Yes

Display

faults

END

Check lines. If still

failing change UPP.

Retest

Page 76  2004 Nokia Corporation. Issue 3 05/2004

Company Confidential RH-19/RH-50

Nokia Customer Care 6 - Baseband Description and Troubleshooting

Selftest failure

Selftest

If any of selftests is failed,

contact service information will

be shown on display.

Connect phone to Phoenix

using the DAU-9T cable and

'Tomahawk'

Click on Scan

product from the

'File' menu

Is the Phone

information

available?

No

Set phone toLOCAL mode by

BSI resistor (3.3 kOhm).

Goto the 'Testing' menu and

then to 'Self Tests'. click on

Run all to run the self tests

Top

Yes

Self test shows now
which tests are failing.

Goto relevant flow

chart or carry out

further testing within

phoenix

Issue 3 05/2004  2004 Nokia Corporation. Page 77

RH-19/RH-50 Company Confidential
6 - Baseband Description and Troubleshooting Nokia Customer Care

Active cover interface

Active

W ait >10 sec for

cover detection

with phone

Ac tiva te A ctive

cover in menu

Play a ringing tone

Cover

Measure Voltage

at CTI. Is it approx

2.8V

Yes

Connect a 200kohm
resistor between CTI

and GND

Yes

Measure voltage at

CTI. Is it approx

1.9V?

Check Voltage at

VD D . Is it 2 .78 V?

Yes

Check signal at CTI pin,

whilst ringing tone is playing.

Is there 1.9V DC offset +

ringing tone?

Yes

Active cover IF

is O K

END

No

No

Top

No

Active Cover Connection points

GND

VDD

CTI pin

Page 78  2004 Nokia Corporation. Issue 3 05/2004