Nokia NSD-6 Installation instructions

Programmes After Market Services
NSD-6 Series Transceivers
Issue 1 04/01 Nokia Mobile Phones Ltd.
Disassembly/Troubleshooting
Instructions

NSD-6
Disassembly/Troubleshooting Instructions PAMS Technical Documentation
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PAMS Technical Documentation Disassembly/Troubleshooting Instructions
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Contents
Page No
Troubleshooting ............................................................................................................. 8
Baseband Troubleshooting............................................................................................. 8
Main Circuit Sections..................................................................................................... 8
Power Circuitry ............................................................................................................8
CCONT ........................................................................................................................8
Vbat ..............................................................................................................................8
Vref ..............................................................................................................................8
Linear Regulators .........................................................................................................9
1. Vbb........................................................................................................................ 9
2. RF Regulators (VR1–VR7)................................................................................... 9
3. V2V (VMAD) ....................................................................................................... 9
Switch mode regulator .................................................................................................9
1. V5V (+5V_POWER) ............................................................................................ 9
2. VSIM (3V_5V) ..................................................................................................... 9
A/D Conversion....................................................................................................... 10
Watchdog ................................................................................................................ 10
Serial bus................................................................................................................. 10
PENTA.................................................................................................................... 10
External regulators .....................................................................................................11
Clocks ........................................................................................................................11
Sleep Clock ............................................................................................................. 11
System Clock........................................................................................................... 11
CDMA clock ........................................................................................................... 11
Charging Circuit ........................................................................................................11
CAFE .........................................................................................................................12
Microphones ..............................................................................................................12
Earpiece and XEAR ...................................................................................................12
Clock circuit ...............................................................................................................12
AMPSMOD ...............................................................................................................12
Transmit and Receive RF Signals ..............................................................................12
MAD4 ........................................................................................................................13
DSP ............................................................................................................................13
External Regulator .....................................................................................................13
MCU ..........................................................................................................................13
Memories ...................................................................................................................14
Problems....................................................................................................................... 14
Phone won’t power up ...............................................................................................14
Flash Align .................................................................................................................14
Test 9....................................................................................................................... 14
Test 10..................................................................................................................... 14
In the field ..................................................................................................................14
Battery will not charge ...............................................................................................14
Audio failures ............................................................................................................15
List of Test Points ......................................................................................................16
Test Point Diagrams ..................................................................................................19
RF Troubleshooting ..................................................................................................... 20
WinTesla General Set Up ............................................................................................ 20

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Testing Menu ............................................................................................................... 21
AMPS Fault Finding Setup ........................................................................................21
Cell Band CDMA Fault Finding Setup .....................................................................22
PCS Band CDMA Fault Finding Setup .....................................................................23
Tuning Menu .............................................................................................................23
AMPS Tuning AFC ...................................................................................................24
Description of Test.................................................................................................. 24
Definition of Result................................................................................................. 24
Manual Verification ................................................................................................ 24
Troubleshooting ...................................................................................................... 25
AMPS Tuning Tx Power Levels ................................................................................25
Description of Test.................................................................................................. 25
Definition of Result................................................................................................. 26
Manual Verification ................................................................................................ 26
Troubleshooting ...................................................................................................... 27
AMPS Tuning Tx Modulation Index .........................................................................28
Description of Test.................................................................................................. 28
Definition of Result................................................................................................. 28
Manual Verification ................................................................................................ 29
Troubleshooting ...................................................................................................... 29
AMPS Tuning RSSI ..................................................................................................29
Description of Test.................................................................................................. 29
Definition of Result ...................................................................................................29
Manual Verification ................................................................................................ 30
Troubleshooting ...................................................................................................... 30
AMPS Tuning Rx Audio Gain ..................................................................................32
Description of Test.................................................................................................. 32
Definition of Result................................................................................................. 32
Manual Verification ................................................................................................ 33
Troubleshooting ...................................................................................................... 33
800 CDMA Tuning Tx IF AGC ................................................................................33
Description of Test.................................................................................................. 33
Definition of Result................................................................................................. 33
Manual Verification ................................................................................................ 34
Troubleshooting ...................................................................................................... 34
800 CDMA Tuning LNA Switch ..............................................................................35
Description of Test.................................................................................................. 35
Definition of Result................................................................................................. 36
Manual Verification ................................................................................................ 36
Troubleshooting ...................................................................................................... 36
800 CDMA Tuning Rx IF AGC ................................................................................36
Description of Test.................................................................................................. 36
Definition of Result................................................................................................. 37
Manual Verification ................................................................................................ 37
Troubleshooting ...................................................................................................... 37
800 CDMA Tuning Rx IF Compensation .................................................................38
Description of Test.................................................................................................. 38
Definition of Result................................................................................................. 38

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Manual Verification ................................................................................................ 38
Troubleshooting ...................................................................................................... 38
1900 CDMA Tuning Tx IF AGC ..............................................................................39
Description of Test.................................................................................................. 39
Definition of Result................................................................................................. 39
Manual Verification ................................................................................................ 39
Troubleshooting ...................................................................................................... 39
1900 CDMA Tuning LNA Switch ............................................................................40
Description of Test.................................................................................................. 40
Definition of Result................................................................................................. 40
Manual Verification ................................................................................................ 40
Troubleshooting ...................................................................................................... 41
1900 CDMA Tuning Rx IF AGC ..............................................................................41
Description of Test.................................................................................................. 41
Definition of Result................................................................................................. 41
Manual Verification ................................................................................................ 42
Troubleshooting ...................................................................................................... 42
1900 CDMA Tuning Rx IF Compensation ...............................................................42
Description of Test.................................................................................................. 42
Definition of Result................................................................................................. 42
Manual Verification ................................................................................................ 43
Troubleshooting ...................................................................................................... 43
Test Point Values ......................................................................................................... 44

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NOTE! When assembling the B
cover screws, use 17 Ncm torque.
NOTE: Do not attempt to remove the antenna from the B–cover.
1.
2.
3.
4.
5.
Remove battery
Remove dust cap by fingernail
Remove back cover
screws (4 pcs) Remove C–cover
Carefully remove A–cover
Note snap fixings !
Press strongly towards
arrow direction
6.

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Note: When the phone is disassembled (opened), please be careful NOT to TOUCH the
antenna clip (x703) or the antenna ground clip (x704). During re-assembly, ensure that
the clips are not damaged.
NOTE! When assem-
bling the screw use
17 Ncm torque.
7. 8.
Remove UI–module
screws (2 pcs) Remove UI–module
and frame
Remove engine
module screw (1 pc)
Remove microphone
Remove engine module
9.
10.
11.

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Troubleshooting
Baseband Troubleshooting
Each main portion of the circuit will be described in enough detail for the troubleshooter
to determine whether or not that part of the circuit being evaluated is functional. It will
be helpful to use the placement diagram, which illustrates all of the necessary testpoints
in the baseband circuit, to troubleshoot the phone. The placement diagram is intended to
be used concurrently with this document. Herein, TPD refers to Test Point Designation.
TP refers to Test Point originating from schematics. Note that the baseband consists of
mainly a few ASICS, and there is very little discrete circuitry other than passive compo-
nents. Baseband problems are few compared to previous projects with much more dis-
crete circuitry.
Therefore, hardware bugs will not be as obvious since they will likely NOT be a failing
part, but perhaps SMD or mechanical issues.
Main Circuit Sections
Power Circuitry
There are two ASICs in the baseband section, which supply power to most of the phone.
CCONT is the main power management ASIC, and PENTA is used to supply additional
switchable regulators for use in RF. Two discrete linear regulators are used as well.
CCONT
CCONT is the main power management ASIC. Its features include eight 2.8V linear regu-
lators, a linear regulator with adjustable output, a reference voltage output, a 5V switch
mode regulator, an 8 channel A/D converter, and 32kHz clock circuitry. Each of the main
functions and signals is described below, including information on how to verify correct
operation.
Vbat
CCONT is powered directly from the battery voltage, Vbat. Since CCONT is a uBGA, the
physical connection of CCONTs power pins cannot be verified. Vbat must be checked
instead at the closest external component, which is shown as TPD30. Valid voltages are
3.1 – 4.1V and should always be powered, assuming voltage is applied to the battery ter-
minals.
Vref
Vref is used as a reference voltage both internal and external to CCONT. It is switchable
between the nominal voltages of 1.500V and 1.251V, with the default at power up being
1.500V. The phone uses the 1.251V reference, so once flash software is running Vref
must switch to 1.251V.
Check Vref at TPD6. Valid voltages are 1.478 – 1.523V and 1.244 – 1.258V, respectively.

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Linear Regulators
1. Vbb
Vbb supplies power to most of the baseband circuitry. This regulator should be on at all
times during CCONTs power on, reset, and sleep modes. Nominal voltage is 2.8V, but
anything in the range 2.7–2.87V is valid. Vbb is found at TPD3.
2. RF Regulators (VR1–VR7)
VR1 through VR7 are referred to as the RF regulators. Most are switchable, and all should
be within 2.67 – 2.85V when they are on (2.8V nomi nal). VR1 and VR6 are always on
during CCONTs power on mode. The rest of the regulators are switchable and are nor-
mally on during one or more of the various phone states, but may be turned on at any
time with the service software in order to verify their output. The RF regulators can be
checked at the following test points.
a) VR1 – TPD11
b) VR1_SW – TPD12
c) VR2 – TPD40
d) VR3 – TPD38
e) VR4 – TPD4
f) VR5 – TPD39
g) VR6 – TPD10
h) VR7 – TPD41
i) VR7A –TPD9
3. V2V (VMAD)
The V2V regulator is intended to power the MAD4 ASIC core. The output is adjustable
from 1.3V to 2.65V in 0.225V steps, and is used with MAD4 ver 3 (but not MAD4 ver 2).
The output at V2V, when MAD4 ver 3 is mounted, should be 1.750V ±5% and can be
checked on TPD2.
Switch mode regulator
1. V5V (+5V_POWER)
V5V is a 5V switch mode regulator, which always remains on during CCONT power on
mode. Valid voltages are 4.8V to 5.2V, and it can be checked at TPD16.
2. VSIM (3V_5V)
VSIM is powered by the same switch mode regulator as V5V, however, it is switchable

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between 3V and 5V. The phone uses VSIM as the 3V FLASH programming voltage, so it
should remain off unless the phone is being flashed. Valid voltages are 2.8V to 3.2V, and
it can be checked at TPD7 (or TP33 on PWB).
A/D Conversion
CCONT contains a 10–bit A/D converter that is multiplexed between 8 different inputs.
They are used mainly for battery and charger monitoring. The 8 inputs are Vbat (battery
voltage), ICHAR (charger current), VCHAR (charger voltage), BSI (battery type), BTEMP
(battery temperature), VCXOTEMP (PA temperature), RSSI (AMPS receive signal strength),
and EAD (accessory detection). These readings can be accessed through the service soft-
ware. Check for shorts or opens on the resistor networks connected to these signals if the
flash align test software reports that they are out of range.
Watchdog
CCONTs watchdog circuitry consists of an eight bit down counter that causes CCONT to
power down when zero is reached. The counter may be reset by loading a new, non–zero
value into the watchdog register via CCONTs serial bus. It is difficult to verify the watch-
dog function, but the serial bus may be verified.
There is a watchdog disable pin which allows the watchdog timer to expire without
shutting down the phone, but this pin is mainly used as one of the methods to turn on
CCONT from power off mode. While the phone power key is pressed, this pin should be
pulled low and can be checked at TPD 35 (R325).
The watchdog can be disabled by pulling down the above mentioned pin(WDDISX) by
installing a 0 Ohm resistor at R307, and removing R325.
Serial bus
Since the serial bus is used to control almost all of CCONTs functions, any shorts or open
circuits on these three lines would cause CCONT to be completely nonfunctional. The
main symptoms are the following:
CCONT will turn on when the power key is pressed (verify this by checking Vbb), but will
then power off after 32 seconds. All three serial bus sig nals (CCONTCSX,
UIF_CCONT_SDIO, and UIF_CCONT_SCLK) should toggle when attempting to write to a
CCONT register.
Note: If the LCD does not come on during this time, however, it may indicate that the
serial bus is functional, but phone does not have valid flash code.
PENTA
PENTA supplies power to the RF section. It has 5 independently switchable regulators
that are controlled via separate enable pins. There is also a common enable pin that must
be active in order to turn on any of the regulators. Each of the regulators, P1–P5, should
have output voltages between 2.7V and 2.85V (2.8V nominal). These can be checked at
the following test points.
a) P1 – TPD18

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b) P2 – TPD17
c) P3 – TPD19
d) P4 – TPD21
e) P5 – TPD22
External regulators
There are three regulators used in addition to CCONT and PENTA. One is controlled by
CCONTs VR7 regulator output and used as a low noise power source for RF. This regulator
is 2.8V nominal and can be checked at TPD9.
The second regulator is used to power the data cable accessory, so output is enabled only
when a data cable accessory is detected. This regulator is also 2.8V nominal and can be
checked at TPD51 (shares SGND).
The third regulator is used to power the DSP portion of MAD4. It is enabled by Vbb, and
difference between the rise times of the DSP regulator and Vbb should be less than
200usec. This regulator is 2.8V nominal and can be checked on pin 1, 30, or 115 of the
MAD4 ASIC. (This component is most likely stuffed if MAD4_V3 is used.)
Clocks
Sleep Clock
The 32kHz sleep clock is generated by CCONT, and can be checked at TPD31. The 32kHz
square wave will be present only after the phone is turned on. If no signal is present on
this line, check the output of the oscillator at R304. This signal should be a 2Vpp clipped
signal riding on 1.5V DC.
System Clock
The 19.2MHz system clock is generated by the VCTXO in the RF section, and then squared
in CAFE. Check TPD23, which should be approximately a 0.5V sinewave riding on 1.8V
DC. Check TPD25 (or TP14*), which should be a 2.8V squarewave. This clock is not active
during the phone’s sleep mode (CLK_EN is low during sleep mode).
*Note that TP14 on NSD–3AW has been moved.
CDMA clock
The CDMA clock is 9.8MHz and is generated in CAFE with a PLL. This should be a 2.8V
square wave and can be verified at TPD24 (TP13).
Charging Circuit
The charging switch, CHAPS, is controlled by a PWM from CCCONT. This PWM can be at
1Hz or at 32Hz, with varying duty cycles, and should only be active when a charger is
detected. The frequency should be 1Hz when an ACP–7 is detected and 32Hz when an
ACP–9 is detected. To verify correct operation of CHAPS, monitor the charging current

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(ICHAR) with the service software. When the PWM is off, current must be approxi-
mately 200uA. When the PWM is on, it must be greater than approximately 300mA.
CAFE
The CAFE ASIC performs various functions with respect to the RF circuitry and audio. It
digitizes the analog voice signals from the microphone as well as converts received digi-
tal data to voice signals to be sent to the earpiece. This also includes accessory micro-
phones and speakers. It also generates and decodes I and Q data for CDMA, and
demodulates FM (AMPS) signals. CAFE also acts as a clock squaring circuit and CDMA
clock generator.
Microphones
The internal microphone is biased using transistor V201, which is powered by VR1_SW
(TPD12, 2.75VDC). Check also the output of V201. V201, R220 and C212 should be
installed, and R202 should not be installed. MICP must be about 1.7VDC, and MICN must
be about 0.4VDC. Internal microphone bias is active only during a call. The XMIC is
biased by the AUXOUT signal (pin 75) through R209 and R208. The output voltage at pin
75 is about 1.5V.
Earpiece and XEAR
The internal earpiece is driven differentially from pins 77 and 80 (EARP and EARN). The
DC voltage on these two pins is 1.35V. The difference in the DC voltage between these
two pins must not be more than 50mV.
The XEAR signal drives audio to the external accessories. The CAFE signal name is HF (pin
81). The DC level on this pin should be 1.35V. HFCM (pin 82) should also be at 1.35V. The
difference in DC voltage between these two pins should not be more than 50mV.
Note that SGND is the return path for XMIC and XEAR.
Clock circuit
A 19.2MHz sinusoid should appear on pin 25 (Also TPD23). This is from the VCTCXO in
the RF. The CAFE will then produce a 19.2MHz clock at pin 18 (TPD25), and a 9.83MHz
clock on pin 19 (TPD24). See also Clocks section.
AMPSMOD
AMPSMOD is the voice signal to modulate (FM) the RF carrier for transmission. It is the
voice signal that has been processed by the DSP(MAD4) for transmission in AMPS mode.
It represents a modified version of the signal produced by the microphone (CAFÉ pin 58).
Transmit and Receive RF Signals
In CDMA mode, receive I and Q channel RF signals [RXIQ(3:0)] come into CAFÉ at pins 44,
45, 47, and 48. C207, C208, C209, and C210 can also be checked for these signals since
they are in series with the CAFÉ pins. Transmit I and Q RF signals [TXIQ(3:0)] can be seen
at pins 55, 56, 59, and 60 and C201, C204, C222, and C224.

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In AMPS mode, the modulated receive RF signals (LIM_P and LIM_N) can be seen coming
into pins 23 and 24 and C216 and C217. For the AMPS Transmit signal, see AMPSMOD
above.
Both the TX and RX paths are also described in section Audio Failures.
MAD4
The MAD4 ASIC is the core of the baseband functionality and basically contains the DSP,
MCU, and CDMA logic. The DSP is used to perform functions such as RF control, DTMF
tone generation, and it implements the vocoder. The MCU is used to perform functions
that do not require as much power. These are higher level functions such as UI software
(key presses, backlighting, LCD functions, etc.) and mode control.
DSP
The DSP sends control signals to the RF via PDMs. In order to control RF parameters such
as TX_VCO_CAL or TX_LIM_ADJUST, a continuously variable analog signal must be used.
Since the DSP outputs only digital signals, a PDM RC circuit is used to convert the digital
output signal to an average analog voltage. A PDM line will always have a series resistor
followed by a shunt capacitor. The output of the MAD4 PDM lines will appear as square-
wave signals. However, after the shunt capacitor the signals will appear to be DC with
perhaps a slight ripple. The RC circuit acts as an integrator in order to yield the average
value (DC) of the squarewave signal.
The transmit data bus (TXD(7:0)) is 8 bits wide. In CDMA this bus is multiplexed between
sending I and Q data. The signals required to transfer TX data are TXGATE, CLK9M80, and
IQSEL. TXGATE must be high to transfer data, and the data is clocked by CLK9M80, which
is running at 9.8MHz. In AMPS mode, CLK9M80 is running at 120kHz, therefore, data is
being transferred from MAD4 to CAFE at 120kHz.
The JTAG lines are intended to be used to operate the DSP (and/or MCU) externally.
External Regulator
A separate 2.8V external regulator powers the Lead (DSP) independently. Eventually, the
next version of MAD4 will be used and the Lead may be powered by VMAD from CCONT.
See External Regulators section under CCONT/Linear Regulators. Note: This regulator is
also mentioned in section Power Circuitry.
Note: this regulator may not be present on any HW that uses MAD4_V3.
MCU
The MCU is used to perform functions that require less processing power than the DSP. It
runs UI software, mode control, interfaces to MBUS, downloads code to flash, reads and
writes the EEPROM, controls charging, and interprets A/D data from CCONT. (Used only
in NSD–3AW [and NDS–1AW] NBA chip is used in synchronization between MAD4 and
SRAM.)

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Memories
MAD4 interfaces to three memories — Flash, SRAM, and EEPROM. All of them are pow-
ered by 2.8V (Vbb). During Flash programming, Vpp (signal name is Vff on schematic) is
driven with 3V at the PC flash stations.
Problems
Phone won’t power up
Do a visual inspection. Verify that all parts are on the board correctly, and that none is
missing.
Check that the 32kHz clock turns on when attempting to power up.
Check the power circuitry. This includes VBAT, Vref, and all of the linear regulators, as
well as the Penta regulators. Verify also that the external regulator that powers MAD4
(LEADVCC) is functional – if present.
Flash Align
Test 9
High current: This indicates that the problem is likely caused by a shorted component.
Check orientation of major components (including RF), and check for shorts. Likely com-
ponents are those that are powered directly from Vbat such as CCONT, the PAs, and vari-
ous capacitors.
Low current: This indicates that CCONT is not powering on. Verify CCONT circuitry.
Test 10
Flash: Failure to flash is the main baseband failure. Check all the CCONT regulators,
especially Vbb, VR1, and VR6 for shorts. Check clocks and reset circuitry. Check for shorts
on the address, data, and chip enable lines on the memories and MAD4. If a short is
detected, it may be that it is beneath the BGA flash and may have to be replaced.
NOTE: There is no ROM software that can be run when the phone does not flash. There-
fore, it must be visually (or by Ohmmeter) determined whether there is an eventual short
between two or more of the address or data lines.
In the field
Cracked or broken solder may cause failures to occur. Reflowing some of the major com-
ponents may fix problems in case the phone is functioning errantly (some buttons may
not work, the phone may not ring, etc.) or may not power on anymore.
Battery will not charge
If the battery won’t charge (phone won’t allow the battery to charge), check CHAPS and
the charging circuit. It may also be necessary to verify the A/D functionality of CCONT
since this is the method of detecting battery type, charger type, etc.

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Audio failures
If audio fails to be heard from the earpiece (or XEAR), check the following:
Check earpiece contacts.
Verify that the CAFÉ EARP and EARN bias is on. If necessary, check the entire receive
path—Rx voice data comes from the RF through the RXIQ bus (CDMA) or LIM_P and
LIM_N (AMPS), then to MAD4 through RXD (11:0) (Refer to schematic). See the Baseband
section of the Service Manual for more detail on RXD bus usage.
The Rx voice data then goes back to CAFE on CAFESIO (0), and then to the earpiece or
XEAR. CAFESIO (2) must also be active.
Conversely, if the transmit audio is not working, the fault could be anywhere in the
transmit path. Check the following:
Check microphone contacts.
Microphone bias.
Tx voice data is transferred from CAFÉ to MAD4 on CAFESIO (1). CAFE-SIO (2) must also
be active. Tx voice data is then sent back to CAFÉ on the TXD bus (See schematic). See
the Baseband section of the Service Manual for more detail on RXD bus usage.
Tx voice data is then sent to RF on the TXIQ bus (CDMA) or AMPSMOD (AMPS).

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List of Test Points
Test
point Signal name Characteristics Signal destination
31 SleepClock 32.768 KHz typical Square waveform From CCONT to MAD4
25 Clk19m20 19.2 MHz Square waveform From CAFÉ to MAD4
23 Clk19M2rf (D201–25) 19.2 MHz Sinusoidal waveform From RF Synthesizer to CAFÉ and other RF
Synthesizers
24 Clk9m8 9.8 MHz Square waveform From CAFÉ to MAD4
36 CRB 32Khz – 2.8V From 32K crystal to CCONT
14 MemRdX 0 / 2.8 V (active low) From MAD4 to Flash and RAM output enables
15 MemWrx 0 / 2.8 V (active low) From MAD4 to Flash and RAM write enables
13 ROM1SelX 0 / 2.8 V (active low) From MAD4 to Flash chip enable
5 Clk_En 0 / 2.8 From MAD4 to FLASH, CCONT and CAFE
1 PurX ( D101–116 ) 0 / 2.8 V (active low) From CCONT to MAD4
35 WdDisX 2.8 V (active low) CCONT test point for phone diagnosis mode
34 PwrOnX 0 / 2.8 V (active low) From UI Power Key to MAD4 and CCONT
33 ResetX 0 / 2.8 V (active low) From MAD4 to CAFE
30 Vbat 3.1 – 4.1 V valid battery range
(3.1 – 5.2 with charger connected)
From Battery connector to CCONT and other
various parts of phone
3 Vbb 2.8 V typical (2.7 – 2.87 V) From CCONT to MAD4 and Memories
2 Vmad N / A From CCONT to MAD4
11 Vr1 2.8 V typical (2.67 –2.85 V) From CCONT to 19.2MHz VCTCXO
12 Vr1_Sw (MIC bias) 0 / 2.75V From CCONT to V201 to CAFE
40 Vr2 0 / 2.8 V typical (2.67 –2.85 V) From CCONT to CELL Receiver
38 Vr3 0 / 2.8 V typical (2.67 –2.85 V) From CCONT to RF Receiver
4 Vr4 2.8 V typical (2.67 –2.85 V) From CCONT to PCS Transmitter
39 Vr5 0 / 2.8 V typical (2.67 –2.85 V) From CCONT to CELL Transmitter
10 Vr6 2.8 V typical (2.67 –2.85 V) From CCONT to CAFE
41 Vr7 0 / 2.8 V typical (2.67 –2.85 V) From CCONT to RF Synthesizer
9 Vr7a 0 / 2.8 V

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6 Vref 1.251 typical (1.244 – 1.258) From CCONT to CAFE
16 +5_Power (V5V) 5 V typical (4.8 – 5.2 V) From CCONT to CELL and PCS Transmitters
7 3V_5V (VSIM) 0 / 2.8 – 3.2 V From CCONT to Flash
18 P1 0 / 2.8 V typical (2.7 – 2.85) From PENTA to CELL Synthesizer
17 P2 0 / 2.8 V typical (2.7 – 2.85) From PENTA to AMPS Receiver
19 P3 0 / 2.8 V typical (2.7 – 2.85) From PENTA to PCS Synthesizer
21 P4 0 / 2.8 V typical (2.7 – 2.85) From PENTA to CELL Receiver
22 P5 0 / 2.8 V typical (2.7 – 2.85) From PENTA to PCS Receiver
43 V_in ACP–7: 3.5VA C(rms) to 8.5VA C(rms)
ACP–9 : 4.3VDC to 8VDC
From Bottom Connector to CHAPS
Note: Lower VBAT = lower Vin levels
44 L_Gnd 0V From Bottom Connector, through an inductor to
Phone Ground
45 V_in ACP–7: 3.5VA C(rms) to 8.5VA C(rms)
ACP–9 : 4.3VDC to 8VDC
From Bottom Connector to CHAPS
Note: Lower VBAT = lower Vin levels
46 Chrg_Ctrl 1 0 / 2.8 V From MAD4 to CHAPS
47 Chrg_Ctrl 0 / 2.8 V From MAD4 to CHAPS
48 MicP 1.7VDC (no voice activity) From Bottom Connector to CAFÉ internal
microphone input
49 MicN 0.4VDC (no voice activity) From Bottom Connector to CAFÉ internal
microphone input
50 Xmic 0.9VDC (no voice activity) From Bottom connector to CAFÉ external micro-
phone input
51 Sgnd Approximately 0.0V From CAFÉ to Bottom Connector
52 Xear 2.8VDC (no voice activity) From CAFE to Bottom Connector
53 Mbus 0 / 2.8 V Bi–directional Serial bus to MAD4 and the Bot-
tom Connector
54 Fbus_Rx 0 / 2.8 V Serial bus from Bottom Connector to MAD4
55 Fbus_Tx 0 / 2.8 V Serial bus from MAD4 to the Bottom Connector
56 L_Gnd 0V From Bottom Connector, through an inductor to
Phone Ground
37 BTEMP Variable DC From Battery terminal to CCONT
42 VCHAR Vin divided by 10 From System connector to CHAPS and CCONT
Test
point Signal name Characteristics Signal destination

NSD-6
Disassembly/Troubleshooting Instructions PAMS Technical Documentation
Page 18 Nokia Mobile Phones Ltd. Issue 1 04/01
8 PA_Temp Variable DC From Shark thermister to CCONT A/D
20 Vibra 0 / 2.8 (11Khz when Vibra active) From MAD4 to Vibra Motor
29 EEPROMsclk 0 / 2.8 From MAD4 to EEPROM
28 EEPROMsda 0 / 2.8 From MAD4 to EEPROM
32 Amps_Mod Analog data (voice) From CAFÉ to RF section
26 Address (23:0) 0 / 2.8 V From MAD4 to Flash and RAM
27 Data (15:0) 0 / 2.8 V From MAD4 to Flash and RAM
Test
point Signal name Characteristics Signal destination

PAMS Technical Documentation Disassembly/Troubleshooting Instructions
NSD-6
Issue 1 04/01 Nokia Mobile Phones Ltd. Page 19
Test Point Diagrams
U
F
4
i
b
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t
t
o
m
U
F
4
i
t
o
p

NSD-6
Disassembly/Troubleshooting Instructions PAMS Technical Documentation
Page 20 Nokia Mobile Phones Ltd. Issue 1 04/01
Test points (TPD) are illustrated in the schematic diagrams.
RF Troubleshooting
This document is written for use in conjunction with the WinTesla Tuning and Testing
software. Screen shots of the menu structures are shown throughout the document. This
document should be used in conjunction with the phone’s schematics which are referred
to in detail throughout.
WinTesla has three key menus:
Configure — Basic set up covered in WinTesla General Set Up
Testing — This menu allows switching on the phone in different modes
Tuning — This menu allows tuning and storing of data to eeprom
Tuning is described in four parts:
A description of the tuning: Describes the tuning process
Definition of result: What tuning is storing to eeprom
Manual Verification: How to use WinTesla to tune the phone
Troubleshooting: Outlines key components to be checked
WinTesla General Set Up
Connect the phone to the PC COM port and start WinTesla. Select “Product” and “New”
and the phone configuration will be selected automatically.
Select “Configure” and “Frequency Plan”. You will then be able to see and also change
the default AMPS and CDMA Channels. The cable loss should also be entered here.