How it Works
Nokia
Loading...
2118
Service Manual 01rh77foreword
10 pgs56.31 Kb0
Service Manual 02rh77gen
6 pgs66.55 Kb0
Service Manual 03rh77parts
16 pgs129.17 Kb0
Service Manual 04rh77ssi
10 pgs109.17 Kb0
Service Manual 05rh77servtools
12 pgs225.58 Kb0
Service Manual 06rh77disass
8 pgs179.69 Kb0
Service Manual 07rh77ant
8 pgs150.96 Kb0
Service Manual 09rh77rf
42 pgs1.19 Mb0
Service Manual 10rh77schem
18 pgs353.22 Kb0
User Manual
78 pgs494.95 Kb0
User Manual
108 pgs789.12 Kb0
Table of contents
Loading...

Nokia 2118 Service Manual 08rh77bb

Download
Page 1
Nokia Customer Care
2118 (RH-77)
Mobile Terminal
Baseband Description and
Troubleshooting
Issue 01 04/2005 Company Confidential ©2005 Nokia Corporation
Page 2
2118 (RH-77) Baseband Description and Troubleshooting Nokia Customer Care

Contents Page

Introduction ..................................................................................................................................................... 3
Baseband and RF Architecture.................................................................................................................... 4
Power Up and Reset ....................................................................................................................................5
Power Up - Power Key............................................................................................................................. 7
Power Up - Charger ................................................................................................................................. 7
Power Up - RTC Alarm............................................................................................................................. 8
Power Off .......................................................................................................................................................8
Power Consumption and Operation Modes .........................................................................................8
Power Distribution ......................................................................................................................................9
Clock Distribution ......................................................................................................................................11
RFClk (19.2 MHz Analog)..................................................................................................................... 11
RFConvClk (19.2 MHz digital) ............................................................................................................ 13
CBUS Clk Interface ................................................................................................................................ 14
DBUS Clk Interface................................................................................................................................ 14
SleepCLK (Digital) .................................................................................................................................. 15
SleepCLK (Analog).................................................................................................................................. 15
Flash Programming Error Codes .............................................................................................................. 16
Charging Operation..................................................................................................................................... 18
Battery ..........................................................................................................................................................18
Charging Circuitry .....................................................................................................................................18
Charger Detection .....................................................................................................................................19
Charge Control ...........................................................................................................................................20
Audio .............................................................................................................................................................20
Display and Keyboard ...............................................................................................................................21
Flashlight.................................................................................................................................................. 21
Accessories ..................................................................................................................................................22
Charging................................................................................................................................................... 23
Pop-port Headset Detection.....................................................................................................
FBus Detection........................................................................................................................................ 24
Accessory Detection Through ACI..................................................................................................... 25
SIM CAR .......................................................................................................................................................26
Test Points...................................................................................................................................................... 28
Troubleshooting............................................................................................................................................ 30
Mobile Terminal is Dead ..........................................................................................................................31
Flash Programming Does Not Work .....................................................................................................32
Power Does Not Stay on or the Mobile Terminal is Jammed ........................................................34
Charger .........................................................................................................................................................36
Audio Faults ................................................................................................................................................37
Display Faults ..............................................................................................................................................41
Keypad Faults .............................................................................................................................................43
Flashlight .....................................................................................................................................................45
.......... 24
Page 3
2118 (RH-77)
Nokia Customer Care Baseband Description and Troubleshooting

Introduction

The baseband module is a CDMA single-band engine based on the DCT4 architecture and consists of three ASICs: Universal Energy Management cost effective (UEMC), Universal Phone Processor (UPP8M4.2), and a 64 megabit FLASH.
The baseband architecture supports a power-saving function called sleep mode. Sleep mode shuts off the VCTCXO, which is used as the system clock source for both the RF and the baseband. During sleep mode, the system runs from a 32 kHz crystal and all the RF regulators (VR1A, VR1B, VR2, … VR7) are off. The sleep time is determined by network parameters. Sleep mode is entered when both the MCU and the DSP are in standby mode and the normal VCTCXO clock is switched off. The mobile terminal is waken up by a timer running from this 32 kHz clock supply. The period of the sleep/wake up cycle (slotted cycle) is 1.28N seconds, where N= 0, 1, 2, depending on the slot cycle index.
2118 supports standard Nokia 2-wire and 3-wire chargers (ACP-x and LCH-x). However, the 3-wire chargers are treated as 2-wire chargers. The PWM control signal for controlling the 3-wire charger is ignored. UEMC ASIC and EM SW control charging.
BL-5C Li-ion battery is used as main power source and has nominal capacity of 850 mAh.
Issue 01 04/2005 ©2005 Nokia Corporation Company Confidential Page 3
Page 4
2118 (RH-77) Baseband Description and Troubleshooting Nokia Customer Care

Baseband and RF Architecture

Charger
Bottom
Conn.
Sleep Clk
32 KHz
Audio
MBus
FBusRx
FBusT
x
SIM Reader
UEMC
VR1A VR1B
VR2 VR3
VR4 VR5 VR6 VR7
VBatt
Battery
VIO
VANA
V SIM
Vflash1
Vflash2
Dlight Klight
JTAG
DC/DC
VPPPRODTP
CBus
u
D
B
MBus
FBus
GenIO
Control
s
Flash
C
ExtBus
UPP
Core
N2302
Front
End
VCTCXO
19.2 MHz
System
Connector
V Bat
N700
PA
VBatt
Figure 1: Power distribution
RF
Bus
UHF
SYNTH
Flashlight
N601
V Bat
LCD/Key
Page 5
2118 (RH-77)
Nokia Customer Care Baseband Description and Troubleshooting

Power Up and Reset

Power up and reset are controlled by the UEMC ASIC. The baseband can be powered up in the following ways:
• Pressing the Power button, which means grounding the PWRONX pin of the UEMC
• Connecting the charger to the charger input
• Initiating the RTC Alarm, when the RTC logic has been programmed to give an alarm
After receiving one of the above signals, the UEMC counts a 20 ms delay and then enters reset mode. The watchdog starts, and if the battery voltage is greater than Vcoff+, a 200 ms delay is started to allow references (etc.) to settle. After this delay elapses, the VFLASH1 regulator is enabled. Then, 500 us later, the VR3, VANA, VIO, and VCORE are enabled. Finally, the Power Up Reset (PURX) line is held low for 20 ms. This reset (PURX) is sent to the UPP. Resets are generated for the MCU and the DSP. During this reset phase, the UEMC forces the VCTCXO regulator on — regardless of the status of the sleep control input signal to the UEMC. The FLSRSTx from the UPP is used to reset the flash during power up and to put the flash in power down during sleep. All baseband regulators are switched on when the UEMC is powered on. The UEMC internal watchdogs are running during the UEMC reset state, with the longest watchdog time selected. If the watchdog expires, the UEMC returns to the power off state. The UEMC watchdogs are internally acknowledged at the rising edge of the PURX signal to always give the same watchdog response time to the MCU.
The following timing diagram represents the UEMC start-up sequence from reset to power-on mode.
Issue 01 04/2005 ©2005 Nokia Corporation Company Confidential Page 5
Page 6
2118 (RH-77) Baseband Description and Troubleshooting Nokia Customer Care
Figure 2: Power-on sequence and timing
Page 7
2118 (RH-77)
Nokia Customer Care Baseband Description and Troubleshooting
Power Up - Power Key
When the power key is pressed, the UEMC enters the power-up sequence. Pressing the power key causes the PWRONX pin on the UEMC to be grounded. The UEMC PWRONX signal is not part of the keypad matrix. The power key is only connected to the UEMC. This means that when pressing the power key an interrupt is generated to the UPP that starts the MCU. The MCU then reads the UEMC interrupt register and notices that it is a PWRONX interrupt. The MCU reads the status of the PWRONX signal using the UEMC control bus (CBUS). If the PWRONX signal stays low for a certain time the MCU accepts this as a valid power-on state and continues with the SW initialization of the baseband. If the power key does not indicate a valid power-on situation, the MCU powers off the baseband.
Power Up - Charger
In order to be able to detect and start charging in cases where the main battery is fully discharged (empty) and hence UEMC has no supply (NO_SUPPLY or BACKUP mode of UEMC), charging is controlled by start-up charging circuitry.
Whenever the VBAT level is detected to be below the master reset threshold (V charging is controlled by START_UP charge circuitry. Connecting a charger forces the
Figure 3: Measured power-on sequence and timing
MSTR-
),
Issue 01 04/2005 ©2005 Nokia Corporation Company Confidential Page 7
Page 8
2118 (RH-77) Baseband Description and Troubleshooting Nokia Customer Care
VCHAR input to rise above the charger detection threshold (VCH start-up charging is initiated. The UEMC generates 100 mA constant output current from
the connected charger’s output voltage. The battery’s voltage rises at it charges, and when the VBAT voltage level is detected to be higher than master reset threshold limit (V
), the START_UP charge is terminated.
MSTR+
Monitoring the VBAT voltage level is done by charge control block (CHACON). A MSTRX=‘1’ output reset signal (internal to the UEMC) is given to the UEMC’s reset block when the VBAT>V
If the VBAT is detected to fall below V cancelled. It will restart if a new rising edge on VCHAR input is detected (VCHAR rising
above VCH
DET+
Power Up - RTC Alarm
If the mobile terminal is in power-off mode when the RTC alarm occurs, the wake-up procedure intiates. After the baseband is powered on, an interrupt is given to the MCU. When an RTC alarm occurs during active mode, the interrupt is generated to the MCU.

Power Off

).
and the UEMC enters into the reset sequence.
MSTR+
during start-up charging, charging is
MSTR
) and by detection,
DET+
The baseband switches to power-off mode if any of following occurs:
• Power key is pressed
• Battery voltage is too low (VBATT < 3.2 V)
• Watchdog timer register expires
The UEMC controls the power-down procedure.

Power Consumption and Operation Modes

In power-off mode, the power (VBAT) is supplied to the UEMC, vibra, LED, PA, and PA drivers. During this mode, the current consumption is approximately 35 uA.
In the sleep mode, both processors (MCU and DSP) are in stand-by mode. The mobile terminal enters sleep mode only when both processors make this request. When the SLEEPX signal is detected low by the UEMC, the mobile terminal enters sleep mode. The VIO and VFLASH1 regulators are put into low quiescent current mode, VCORE enters LDO mode, and the VANA and VFLASH2 regulators are disabled. All RF regulators are disabled during sleep mode. When the SLEEPX signal is detected high by the UEMC, the mobile terminal enters ACTIVE mode and all functions are activated.
Sleep mode is exited either by the expiration of a sleep clock counter in the UEMC or by some external interrupt (generated by a charger connection, key press, headset connection, etc.).
In sleep mode, the VCTCXO is shut down and the 32 kHz sleep clock oscillator is used as a reference clock for the baseband.
Page 9
2118 (RH-77)
Nokia Customer Care Baseband Description and Troubleshooting
In ACTIVE mode, the mobile terminal is in normal operation, scanning for channels, listening to a base station, transmitting and processing information. There are several sub-states in the active mode depending on the mobile terminal present state of the mobile terminal, such as burst reception, burst transmission, if the DSP is working, etc.
In active mode, SW controls the UEMC RF regulators: VR1A and VR1B can be enabled or disabled. VSIM can be enabled or disabled and its output voltage can be programmed to be 1.8 V or 3.3 V. VR2 and VR4—VR7 can be enabled or disabled or forced into low quiescent current mode. VR3 is always enabled in active mode and disabled during Sleep mode and cannot be control by SW in the same way as the other regulators. VR3 will only turn off if both processors request to be in sleep mode.
CHARGING mode can be performed in parallel with any other operating mode. A BSI resistor inside the battery pack indicates the battery type/size. The resistor value corresponds to a specific battery capacity. This capacity value is related to the battery technology.
The battery voltage, temperature, size, and charging current are measured by the UEMC, and the charging software running in the UPP controls it.
The charging control circuitry (CHACON) inside the UEMC controls the charging current delivered from the charger to the battery and mobile terminal. The battery voltage rise is limited by turning the UEMC switch off when the battery voltage has reached 4.2 V. The charging current is monitored by measuring the voltage drop across a 220 mOhm resistor.

Power Distribution

In normal operation, the baseband is powered from the mobile terminal‘s battery. The battery consists of one Lithium-Ion cell capacity of 850 mAh and some safety and protection circuits to prevent harm to the battery.
The UEMC ASIC controls the power distribution to the whole mobile terminal through the BB and RF regulators excluding the power amplifier (PA), which has a continuous power rail directly from the battery. The battery feeds power directly to the following parts of the system:
•UEMC
•PA
•Vibra
•Display
• Keyboard lights
The heart of the power distribution to the mobile terminal is the power control block inside the UEMC. It includes all the voltage regulators and feeds the power to the whole system. The UEMC handles hardware power-up functions so the regulators are not powered and the power up reset (PURX) is not released if the battery voltage is less than 3 V.
Issue 01 04/2005 ©2005 Nokia Corporation Company Confidential Page 9
Page 10
2118 (RH-77) Baseband Description and Troubleshooting Nokia Customer Care
The 2118 baseband is powered from five different UEMC regulators (see Table 1).
Table 1: Baseband Regulators
Regulator
VCORE 300 1.35/1.05 Power up default 1.35 V and 1.05 V in Sleep Mode.
VIO 150 1.8 Enabled always except during power-off mode
VFLASH1 70 2.78 Enabled always except during power-off mode
VFLASH2 40 2.78 Enabled only when data cable is connected
VANA 80 2.78 Enabled only when the system is awake (Off during
VSIM 25 3.0 Enabled only when SIM card is used
Maximum Current (mA)
Vout (V) Notes
sleep and power off-modes)
Table 2 includes the UEMC regulators for the RF.
Table 2: RF Regulators
Regulator
VR1A 10 4.75 Enabled when cell transmitter is on
VR1B 10 4.75 Enabled when the transmitter is on
Maximum Current (mA)
Vout (V) Notes
VR2 100 2.78 Enabled when the transmitter is on
VR3 20 2.78 Enabled when SleepX is high
VR4 50 2.78 Enabled when the receiver is on
VR5 50 2.78 Enabled when the receiver is on
VR6 50 2.78 Enabled when the transmitter is on
VR7 45 2.78 Enabled when the receiver is on
The charge pump that is used by VR1A is constructed around the UEMC. The charge pump works with the CBUS (1.2 MHz) oscillator and gives a 4.75 V regulated output voltage to the RF.
Page 11
2118 (RH-77)
Nokia Customer Care Baseband Description and Troubleshooting

Clock Distribution

RFClk (19.2 MHz Analog)
The main clock signal for the baseband is generated from the voltage and temperature controlled crystal oscillator VCTCXO (G500). This 19.2 MHz clock signal is generated at the RF and is fed to N700 pin 18 (TCXO_IN). N700 then converts the analog sine waveform to a digital waveform with a swing voltage of 0 tot 1.8 V and sends it to the UPP from pin 16 at N700 (19.2 Out) to the UPP pin M5 (RFCLK).
Figure 4: Waveform of the 19.2 MHz clock (VCTCXO) going to the N700 ASIC
Issue 01 04/2005 ©2005 Nokia Corporation Company Confidential Page 11
Page 12
2118 (RH-77) Baseband Description and Troubleshooting Nokia Customer Care
Figure 5 shows the RFCLK signal for the UPP.
Figure 5: Waveform of the 19.2 MHz Clk going to the UPP for N700 ASIC at C711
Page 13
2118 (RH-77)
Nokia Customer Care Baseband Description and Troubleshooting
RFConvClk (19.2 MHz digital)
The UPP distributes the 19.2 MHz internal clock to the DSP and MCU, where the software multiplies this clock by seven for the DSP and by two for the MCU.
Figure 6: RFCovCLk waveform
Issue 01 04/2005 ©2005 Nokia Corporation Company Confidential Page 13
Page 14
2118 (RH-77) Baseband Description and Troubleshooting Nokia Customer Care
CBUS Clk Interface
A 1.2 MHz clock signal is used for CBUS, which is used by the MCU to transfer data between the UEMC and UPP.
DBUS Clk Interface
A 9.6 MHz clock signal is used for DBUS, which is used by the DSP to transfer data between the UEMC and UPP.
Figure 7: CBUS data transfer
Figure 8: Dbus data transferring
The system clock is stopped during sleep mode by disabling the VCTCXO power supply (VR3) from the UEMC regulator output by turning off the controlled output signal SleepX from the UPP.
Page 15
2118 (RH-77)
Nokia Customer Care Baseband Description and Troubleshooting
SleepCLK (Digital)
The UEMC provides a 32 kHz sleep clock for internal use and to the UPP, where it is used for sleep mode timing.
SleepCLK (Analog)
When the system enters sleep mode or power off mode, the external 32 KHz crystal provides a reference to the UEMC RTC circuit to turn on the mobile terminal during power off or sleep mode.
Figure 9: 32 kHz Digital output from UEMC
Figure 10: 32 kHz analog waveform at 32 KHz crystal input
Issue 01 04/2005 ©2005 Nokia Corporation Company Confidential Page 15
Page 16
2118 (RH-77) Baseband Description and Troubleshooting Nokia Customer Care

Flash Programming Error Codes

The following characteristics apply to the information in Table 3.
• Error codes can be seen from the test results or from Phoenix's flash-tool.
• Underlined information means that the connection under consideration is being used for the first time.
Table 3: Flash Programming Error Codes
Error Description Not Working Properly
C101 "The Phone does not set FbusTx line high after
the startup."
C102 "The Phone does not set FbusTx line low after
the line has been high. The Prommer generates this error also when the Phone is not connected to the Prommer."
C103 " Boot serial line fail." Mbus from Prommer->UEMC-
C104 "MCU ID message sending failed in the Phone." FbusTx from UPP->UEMC->Prommer
C105 "The Phone has not received Secondary boot
codes length bytes correctly."
C106 "The Phone has not received Secondary code
bytes correctly."
Vflash1 VBatt BSI and FbusRX from prommer to UEMC. FbusTx from UPP->UEMC->Prommer(SA0)
PURX(also to Safari) VR3 Rfclock(VCTCXO->Safari->UPP) Mbus from Prommer->UEMC­>UPP(MbusRx)(SA0) FbusTx from UPP->UEMC->Prommer(SA1) BSI and FbusRX from prommer to UEMC.
>UPP(MbusRx)(SA1) FbusRx from Prommer->UEMC->UPP FbusTx from UPP->UEMC->Prommer
Mbus from Prommer->UEMC->UPP(MbusRx) FbusRx from Prommer->UEMC->UPP FbusTx from UPP->UEMC->Prommer
Mbus from Prommer->UEMC->UPP(MbusRx) FbusRx from Prommer->UEMC->UPP FbusTx from UPP->UEMC->Prommer
C107 "The Phone MCU can not start Secondary code
correctly."
C586 "The erasing status response from the Phone
informs about fail."
C686 "The programming status response from the
Phone informs about fail."
Cx81 "The Prommer has detected a checksum error
in the message, which it has received from the Phone."
Cx82 "The Prommer has detected a wrong ID byte in
the message, which it has received from the Phone."
UPP
Flash
Flash
FbusTx from UPP->UEMC->Prommer
FbusTx from UPP->UEMC->Prommer
Page 17
2118 (RH-77)
Nokia Customer Care Baseband Description and Troubleshooting
Table 3: Flash Programming Error Codes (Continued)
Error Description Not Working Properly
A204
Cx83
Cx84
Cx85
Cx87 "Wrong MCU ID." RFClock
Startup for flashing
"The flash manufacturer and device IDs in the existing algorithm files do not match with the IDs received from the target phone."
"The Prommer has not received phone acknowledge to the message."
"The phone has generated NAK signal during data block transfer."
"Data block handling timeout"
Required startup for flashing Vflash1
Flash UPP VIO/VANA Signals between UPP-Flash Mbus from Prommer->UEMC->UPP(MbusRx) FbusRx from Prommer->UEMC->UPP FbusTx from UPP->UEMC->Prommer
UPP(Vcore)
VBatt
Issue 01 04/2005 ©2005 Nokia Corporation Company Confidential Page 17
Page 18
2118 (RH-77) Baseband Description and Troubleshooting Nokia Customer Care

Charging Operation

Battery

The 2118 uses a Lithium-Ion cell battery with a capacity of 850 mAh. Reading a resistor inside the battery pack on the BSI line indicates the battery size. The mobile terminal measures the approximate temperature of the battery on the BTEMP line with an NTC resistor on the PCB.
The temperature and capacity information are needed for charge control. These resistors are connected to the BSI pin of the battery connector and the BTEMP of the mobile terminal. The mobile terminal has 100 kΩ pull-up resistors for this line so that they can be read by A/D inputs in the mobile terminal.

Charging Circuitry

The UEMC ASIC controls charging depending on the charger being used and the battery size. External components are needed for EMC, reverse polarity, and transient protection of the input to the baseband module. The charger connection is through the system connector interface. The baseband is designed to support DCT3 chargers from an electrical point of view. Both 2- and 3-wire type chargers are supported. However, the 3-wire chargers are treated as a 2-wire charger.
Figure 11: BL-5C battery pack pin order
Page 19
2118 (RH-77)
Nokia Customer Care Baseband Description and Troubleshooting
UEMC
VCHAR
PWM
VCHAR in
Over temperature
detection
Watchdog
PWM generator
Switch driver
Control logic
Vmstr
Current
sensing/limit
+
Comp
-
VCHAR out
VBATT
VBATT lim
VBATT
Battery

Charger Detection

Connecting a charger creates voltage on the VCHAR input of the UEMC. Charging starts when the UEMC detects the VCHAR input voltage level above 2 V (VCHdet+ threshold). The VCHARDET signal is generated to indicate the presence of the charger for the SW. The EM SW controls the charger identification/acceptance. The charger recognition is initiated when the EM software receives a ”charger connected” interrupt. The algorithm basically consists of the following three steps:
1. Check that the charger output (voltage and current) is within safety limits.
2. Identify the charger as a 2-wire or 3-wire charger.
3. Check that the charger is within the charger window (voltage and current).
Figure 12: Charging circuitry
Issue 01 04/2005 ©2005 Nokia Corporation Company Confidential Page 19
Page 20
2118 (RH-77) Baseband Description and Troubleshooting Nokia Customer Care
If the charger is accepted and identified, the appropriate charging algorithm is initiated.
X102
1

Charge Control

In active mode, charging is controlled by the UEMC’s digital part. Charging voltage and current monitoring is used to limit charging into safe area. For this reason, the UEMC has the following programmable charge cut-off limits:
• VBATLim1=3.6 V (Default)
• VBATLim2L=5.0 V
• VBATLim2H=5.25 V
VBATLim1, 2L, 2H are designed with hystereses. When the voltage rises above VBATLim1, 2L, 2H+ charging is stopped by turning the charging switch off. No change is done in operational mode. After the voltage has decreased below VBATLim-, charging restarts.
F100
1.5A
L1002
________
42R/100MHz
Figure 13: Charging circuit
V100
"VCHARIN"
C106
1n0
0
2
CHARGER(4:0)
UEM Pins
N10
M10

Audio

There are two PWM frequencies in use depending on the type of the charger. A 2-wire charger uses a 1 Hz, while a 3-wire charger uses a 32Hz. The duty cycle range is 0% to 100%. The maximum charging current is limited to 1.2 A.
R200
VBAT
.22 Ohms
C201
1uF
C202 10nF
Figure 14: Charging circuity at the battery
The audio control and processing is provided by UEMC, which contains the audio codec, and the UPP, which contains the MCU and DSP blocks. These blocks handle and process the audio data signals.
The baseband supports three microphone inputs and two earpiece outputs. The microphone inputs are MIC1, MIC2, and MIC3. MIC1 input is used for the mobile terminal's internal microphone; MIC2 input is used for headsets (HDB-4). MIC3 is not used. Every microphone input can have either a differential or single-ended AC connection to UEMC circuit. The internal microphone (MIC1) and external microphone
(MIC2) for Pop-portTM accessory detection are both differential. The microphone signals from different sources are connected to separate inputs at UEMC. Inputs for the
Page 21
2118 (RH-77)
Nokia Customer Care Baseband Description and Troubleshooting
microphone signals are differential types. Also, MICBIAS1 is used for MIC1 and MICBIAS2 is used for MIC2. The 2118 also supports a hands-free speaker (B301), which is driven by an IHF audio amplifier (N150).

Display and Keyboard

The 2118 uses LEDs for LCD and keypad illumination. There is one LED for the LCD and four LEDs for the keypad. KLIGHT is the signal used to drive the LED driver for the LCD and keyboard. This signal turns on the LED driver (N302).
The 2118 also uses an IOS LCD. The interface uses a 9-bit data transfer and is quite similar to the DCT3 type interface, except the Command/Data information is transferred together with the data.
Figure 15: Waveform for the LCD Interface
Flashlight
The flashlight is driven by the white LED driver and controlled by the UEMC. The TK65600B-G is an active-high enable device, which is tied to the DLIGHT signal from the UEMC.
Issue 01 04/2005 ©2005 Nokia Corporation Company Confidential Page 21
Page 22
2118 (RH-77) Baseband Description and Troubleshooting Nokia Customer Care

Accessories

The 2118 supports Pop-port and Universal Headset accessories, differential and single­ended, respectively. Detection of the Pop-port accessories is done through the ACI signal where the Universal Headset is detected on GenIO (12).
Figure 16: Pop-port connector pin out
The pin out on the Pop-port connector is as follows:
•Charger
• Charger GND
•ACI
•Vout
•USB Vbus
• USB D+ / Fbus Rx
•USB D- / Fbus Tx
• Data GND
•XMic N
•XMic P
•HSear N
•HSear P
•HSear R N
•HSear R P
You can perform the following in Pop-port accessories:
• Charging
• Accessory detection
• FBUS communication
• Fully differential audio interface for mono- and stereo outputs
Page 23
2118 (RH-77)
Nokia Customer Care Baseband Description and Troubleshooting
Charging
Charging through Pop-port is accomplished in the same manner as through the charger connector. Pin 1 of the Pop-port is physically connected to the charger connector. When the mobile terminal is connected to a desktop charger (e.g., DCV-15), it charges in the same manner as it does with the charger connector.
Figure 17 shows the actual charging sequence. The channels on the diagram are:
• CH1 = Charging current across the .22 Ohm (R200) resistor on UEMK
• CH2 = Charger voltage measure at V100
• CH3 = Battery voltage measure at R200
•CH4 = PURX
Figure 17: Charging sequence
In Channel 4, PURX is released, which this indicates when the mobile terminal operation goes from RESET mode to POWER_ON mode.
Issue 01 04/2005 ©2005 Nokia Corporation Company Confidential Page 23
Page 24
2118 (RH-77) Baseband Description and Troubleshooting Nokia Customer Care
Pop-port Headset Detection
Accessory detection on the Pop-port is done digitally. The pins used for this accessory detection are:
• Pin 2 (Charge GND)
• Pin 3 (ACI)
•Pin 4 (Vout)
Figure 18: Waveform showing Pop-port accessory detection
FBus Detection
FBus communication in Pop-port is done through the following lines:
• Pin 2 (Charge GND)
• Pin 3 (ACI)
•Pin 4 (Vout)
• Pin 6 (FBus Rx)
• Pin 7 (FBus Tx)
Page 25
2118 (RH-77)
Nokia Customer Care Baseband Description and Troubleshooting
Figure 19: Waveform showing Pop-port FBus communication
Accessory Detection Through ACI
USB and Audio on (mono or stereo)/FM radio communication in Pop-port is done through the following signals:
Table 4: Accessory Detection Signals
USB Audio/FM
Pin 5 (USB Vbus) Pin 9 (XMic N)
Pin 6 (USB +) Pin 10 (SMIC P)
Pin 7 (USB -) Pin 11 (HSEAR N)
Pin 8 (Data GND) Pin 12 (HSEAR P)
Pin 13 (HSEAR R N)
Pin 14 (HSEAR R P)
Issue 01 04/2005 ©2005 Nokia Corporation Company Confidential Page 25
Page 26
2118 (RH-77) Baseband Description and Troubleshooting Nokia Customer Care

SIM CAR

The 2118 supports SIM CAR. Use the waveform in Figure 21 to verify that the sim_vcc, sim_i/o, cim_clk, and sim_rst signals are activated in the correct sequence at power up. This picture may be taken when the SIM CAR is installed on the mobile terminal to measure the signals when the mobile terminal is turned on. The figure shows the proper waveforms when the interface is working. See Figure 23 on page 29 for the test point’s location.
Figure 20: Waveform showing accessory detection through ACI
Page 27
2118 (RH-77)
Nokia Customer Care Baseband Description and Troubleshooting
Figure 21: RUIM signal waveform
Issue 01 04/2005 ©2005 Nokia Corporation Company Confidential Page 27
Page 28
2118 (RH-77) Baseband Description and Troubleshooting Nokia Customer Care

Test Points

Page 28 ©2005 Nokia Corporation Company Confidential Issue 01 04/2005
Page 29
2118 (RH-77)
Nokia Customer Care Baseband Description and Troubleshooting
Figure 22: Test points (bottom)
Figure 23: BB test points (top)
Issue 01 04/2005 ©2005 Nokia Corporation Company Confidential Page 29
Page 30
2118 (RH-77) Baseband Description and Troubleshooting Nokia Customer Care

Troubleshooting

The following hints should help finding the cause of the problem when the circuitry seems to be faulty. Troubleshooting instructions are divided into the following sections:
• Mobile terminal is totally dead
• Power does not stay on or the mobile terminal is jammed
• Flash programming does not work
• Display is not working
• Audio fault
• Charging fault
First, carry out a through visual check of the module. Ensure in particular that:
• There are no mechanical damages
• Soldered joints are okay
• ASIC orientations are okay
Page 31
2118 (RH-77)
Nokia Customer Care Baseband Description and Troubleshooting

Mobile Terminal is Dead

¾ If current is zero, check the battery connector
Mobile
terminal is
dead
to make sure Vbat makes contact.
¾ If current is too high, check for shorts. ¾ Make sure all BB regulators are at their
respective voltage levels (VANA, VIO, VCORE, VFlash1, and VR3). See phone's top view diagram for test points.
Current is zero or
too high?
NO
Current is
<=30 mA
NO
Current is
35 mA
YES
YES
YES
NO
¾ Make sure the system Clk is 19.2MHz and that
the sleep Clk is 32KHz
¾ Make sure PURX and SleepX signals are high
(1.8V)
Is flash
programming OK?
NO
YES
Mobile
terminal is
jammed
Flash faults
Is moblie terminal in
Local Mode?
YES
Check BSI line X103,
NO YES
R202, R206, C100,
C111. Are they OK?
NO
Change UEM
Repair
OK restart
Issue 01 04/2005 ©2005 Nokia Corporation Company Confidential Page 31
Page 32
2118 (RH-77) Baseband Description and Troubleshooting Nokia Customer Care

Flash Programming Does Not Work

Flash faults
Does the mobile
terminal set
Flashbus TXD line
high after the
startup?
Measure BSI pulse during
YES NO
Flash programming. Is it
OK?
YES
Check BSI line X103,
R202, R206, C100,
C111, C240
NO
Does the mobile
terminal set
Flashbus TXD line
low after the line has
been high?
NO
YES
Flash
faults,
page 2
Change
UEM
YES
Measure FBusRX (2.78V)
signal during flash
programming from
production pattern. Is it
OK?
YES
Measure test point
FBusTx (J411) (1.8V) and
production pattern signal
FBusTxO (2.78V) during flash programming. Are
they the same?
YES
Measure MBus (2.78V). Is
it OK?
NO
change UEM
Change UPP
Is there a pulse
NO
Is there a pulse
on FBusTx?
change UEM
NO
change UEM
Reflow or
NO
on J411?
YES
NO
Reflow or
Reflow or
Page 33
2118 (RH-77)
Nokia Customer Care Baseband Description and Troubleshooting
Flash
faults,
page 2
Can you read the
manufacturer ID and
the device ID?
YES
Is the mobile
terminal dead?
NO
Does the mobile
terminal start up or
appear jammed?
NO
Reflow or change
Flash
YES
YES
Mobile
terminal is
dead
Mobile
terminal is
jammed
NO
Retest
Issue 01 04/2005 ©2005 Nokia Corporation Company Confidential Page 33
Page 34
2118 (RH-77) Baseband Description and Troubleshooting Nokia Customer Care

Power Does Not Stay on or the Mobile Terminal is Jammed

Mobile
terminal is
jammed
Measure VIO,
VCORE, VFlash1,
VANA, and VR3
voltages. Are they
OK?
YES
Measure 32kHz
Sleep Clk from
testpoint. Is it OK?
YES
Measure 19.2MHz RF
Clk at testpoint
C510. Is it OK?
Check VBATT, VIO,
VCORE, VFlash1,
VANA, VR3 capacitors.
NO
NO NO
NO
Are they OK?
NO
Measure the 32kHz
Clk crystal. Is it OK?
YES
YES
Check BSI/BTEMP
lines and VBATT
lines. If OK, reflow
or change UEM
Repair
Change B200
Reflow or change
UEM
YES
Measure PURX and
SleepX at test points
J402 and J403. Are
they high (1.8V)?
YES
Mobile
terminal is
jammed,
page 2
Measure the
19.2MHz Clk coming from the VCTCXO at
C728 and C711. Is it
NO
OK?
YES
Check G502, C522, C521,
R517, R516. If OK, change
NO
G501. Check C728. If OK,
change N700.
Change UPP
Change UEM
Page 35
2118 (RH-77)
Nokia Customer Care Baseband Description and Troubleshooting
Mobile
terminal is
jammed,
page 2
Does the mobile
terminal shut down
after 32 seconds?
NO
Measure DBusEN interface signal at
test point J413. Is it
OK?
YES
Read the mobile
terminal info. Is it
OK?
Is the ESN present?
YES
YES
Has the mobile terminal
been fully erased and
reflashed for this
problem?
YES
Measure watchdog
NO
signal at CBusEN
interface at test
point J406. Is it OK?
Reflow or
YES
change UPP.
Measure FBusRxO
NO NO
signal during mobile terminal info read. Is
it OK?
NO
NO
NO
Rebuild the ESN
Perform a full
erase and reflash
Reflow or change
UPP and reflash.
Reflow or change
UEM and reflash.
Reflow or change
UEM.
YES
YES
Reflow or change
Measure FBusTx
NO
UPP.
signal during mobile
terminal info read
Retest
from test point J411.
Is it OK?
Reflow or change
UEM.
YES
Issue 01 04/2005 ©2005 Nokia Corporation Company Confidential Page 35
Page 36
2118 (RH-77) Baseband Description and Troubleshooting Nokia Customer Care

Charger

Charger
faults
Connect Charger.
Make sure battery is
connected.
Battery bar doesn't
wo r k (scr oll)
YES
Measure voltage
over V100. Is it >3.0
Vdc?
YES
Read BTEMP value.
Is it ~25C (0319)?
YES
Remove (fuse) F100
and measure
current.
Is it ~8 50m A?
NO
NO
NO
NO
Retest
Check DC jack,
F100, L100, V100,
C106
Check NTC. Is it
OK?
YES
Change UEM
NO
Replace NTC
YES
Retest
Page 37
2118 (RH-77)
Nokia Customer Care Baseband Description and Troubleshooting

Audio Faults

Audio
faults
Is the earpiece
working?
YES
NO YES
Change earpiece. Is
it working now?
NO
Set mobile terminal in Local
Mode. Use Phoenix
Troubleshooting > Phone
Control > Phone State Tab >
select Local Mode > click
Execute. Then use Audio Test >
HP microphone in/HP speaker
out > Loop ON to enable the
earpiece. Inject a 1KHz sine
signal 200mVp-p on XMIC.
Is the signal coming
out of the UEM on
NO
EARP and EARN?
Retest
Check R178. If OK,
then change
earpiece.
YES
Check L102, R150,
R152, R155, R151,
Audio faults,
page 2
C181, C153, C151, C152, C156. If OK,
change UEM.
Issue 01 04/2005 ©2005 Nokia Corporation Company Confidential Page 37
Page 38
2118 (RH-77) Baseband Description and Troubleshooting Nokia Customer Care
Audio
faults,
page 2
Is the
microphone
working?
YES
Change the
NO YES
microphone. Is it
working now?
NO
Set th e mobile te rmina l in L o c a l
Mode. Use Phoenix
Troubleshooting > Phone
Control > Phone State Tab >
Select Local Mode > Execu te.
Then use Audio Test > HP
microphone in/HP speaker out >
Loop On to enab le earpiece.
Talk through the microphone.
Measure MICB 1
voltage from MICP
NO
pad s . Is it ~ 2 .1 V ?
Retest
Check
connections at
C180 and R170. If
OK, change U EM
Audio faults,
page 3
YES
Is the sig n al g o ing
to the U E M at MIC P
and MICN at R170 ?
YES
Is the sig n al g o ing
out of the UEM at
XEAR, pin 11 and 12
on the bottom
connector (X101)?
YES
NO
NO
Check connections
at R171, R172, R173,
C171, C172, C169, C179, C178. If OK,
change microphone
Check L103, R168,
R105. If OK, change
UEM
Retest
Page 39
2118 (RH-77)
Nokia Customer Care Baseband Description and Troubleshooting
Audio faults,
page 3
Is internal handsfree
speaker (IHF)
working?
YES
Select a ring tone
and measure signals
NO YES
at L150 and L151. Is
signal OK?
NO
Measure GenIO28. Is
it OK ( 1.8V)?
YES
NO
Set the mobile ter minal in
Local Mode. Use Phoenix Troubleshooting > Phone
Control > Phone State Tab >
select Local Mode >
Execute. Then use Audio
test > HP micro p h o n e in/Ext
Speaker out > Loop ON. To
enable IHF turn on GenIO
(10). Measure and check IHF
testpoints J150, J151. Is it
OK?
NO
Change B301
Change UPP
Change IHF
YES
Change the UPP
Audio faults,
page 4
Issue 01 04/2005 ©2005 Nokia Corporation Company Confidential Page 39
Page 40
2118 (RH-77) Baseband Description and Troubleshooting Nokia Customer Care
Audio faults,
page 4
Measure VBATT
Is Vibra working?
NO NO
voltage pin 1 of
M300. Is it OK?
YES
Check VBATT line
YES
Use UI Menu > Profile > Normal >
Customize > Vibrating Alert > Select On
> then go back to Customize menu >
Ringing Tone > Try any ring tone and
vibra should work.
Measure the UEM signal on pin 2 of
M300. Is the signal
NO
OK?
YES
Change the UEM
Change Vibra
END
Page 41
2118 (RH-77)
Nokia Customer Care Baseband Description and Troubleshooting

Display Faults

Display
faults
Are the keyboard
LEDs turned on
when the mobile
terminal is turned on
or when making a
call?
NO YES
Measure VBATT
voltage at L301. Is it
okay?
NO
Check VBATT line
and C303, C316, and
L300.
YES
Display faults 2
Measure the driver
signal from UEM at
J336. Is the signal
okay?
YES
NO
Change UEM
Check N302 driver
signal at C304. If not
OK, change N302.
Issue 01 04/2005 ©2005 Nokia Corporation Company Confidential Page 41
Page 42
2118 (RH-77) Baseband Description and Troubleshooting Nokia Customer Care
Display
faults,
page 2
Does the Display
start?
YES
Try changing
NO YES
display module.
Does it work?
NO
Measure VIO and
Flash1.
NO
Check LCD signals
LCDCSX (pin5), LCDCLK (pin4),
LCDSDA (pin3), and
NO
LCDRESX (pin2) at
X302. Signals OK?
Retest
Change UEM
Change UPP
YES
Change Display
END
Page 43
2118 (RH-77)
Nokia Customer Care Baseband Description and Troubleshooting

Keypad Faults

Keypad
faults
Is the power key
working?
YES
Keypad
faults,
page 2
NO NO
Measure voltage at
YES
Measure voltage at
S300 when power
key is pressed. Is it
high?
NO
S302. Is it high?
Check S302. Is
YES
it OK?
Change S300
NO
Check S302, C310,
and R306. If OK,
change UEM
Mobile
YES
terminal is
dead
Mobile
terminal is
jammed
Issue 01 04/2005 ©2005 Nokia Corporation Company Confidential Page 43
Page 44
2118 (RH-77) Baseband Description and Troubleshooting Nokia Customer Care
Keypad
faults,
page 2
Are the UI modules
keys working?
YES
END
Change keypads
NO
module. Is it
working?
Measure ROW 0-5 (P10-P15) signals
between UPP and
keypad at J325,
J320, J321, J322,
J323. Are they
Measure COL 1-5
(P1-P5 ) s ign a ls
between UPP and
keypad at J331, J324, J337, J326, J327, J328, J329.
Are they ~1.8V
NO
~1.8V?
YES
YES
NO
NO
Retest
Make sure
there are no
shorts on
Z30 0. If OK,
change UPP
Make sure
there are no
shorts on
Z30 0. If OK,
change UPP
Page 45
2118 (RH-77)
Nokia Customer Care Baseband Description and Troubleshooting

Flashlight

Flashlight
faults
Are the flashlight
LEDs turned on
when the mobile
terminal is turned on
and when pressing
the UP key?
YES
Flashlight
OK
NO
Measure VBATT
voltage at R303. Is it
OK?
YES
Measure the driver
signal DLIGHT at
D301 J336, and
Q301. Is the signal
OK?
YES
Check VBATT line at
NO
the battery
connector
NO
Change the UEM
Check N302, L301,
L300, C316, C304, R300, R302, R304,
Check solder joints
at D305. If bad,
replace LEDs.
R2310.
YES
Issue 01 04/2005 ©2005 Nokia Corporation Company Confidential Page 45
Page 46
2118 (RH-77) Baseband Description and Troubleshooting Nokia Customer Care
This page intentionally left blank.
Loading...
Buy Points How it Works FAQ Contact Us Questions and Suggestions Privacy Policy Cookie Policy Terms of Use