Text preview for : 8-npd1troubleBB.pdf part of NOKIA 8-npd1troubleBB NOKIA Mobile Phone 3570-3585 8-npd1troubleBB.pdf
Back to : 8-npd1troubleBB.pdf | Home
CCS Technical Documentation
NPD-1 Series Transceivers
Troubleshooting -- BB
Issue 1 11/2002 Confidential Nokia Corporation
NPD-1
Troubleshooting -- BB CCS Technical Documentation
Page 2 Nokia Corporation Confidential Issue 1 11/2002
NPD-1
CCS Technical Documentation Troubleshooting -- BB
Contents
Page No
Troubleshooting Overview ............................................................................................ 5
Flash programming ......................................................................................................6
Connections to Baseband .......................................................................................... 6
Baseband Power Up .................................................................................................. 7
Flash Programming Indication .................................................................................. 7
Flashing ..................................................................................................................... 7
Power Up and Reset ...................................................................................................10
Power up with PWR key ......................................................................................... 12
Power up when charger is connected ...................................................................... 12
RTC alarm power up ............................................................................................... 13
Power off ...................................................................................................................13
Power Consumption and Operation modes ...............................................................13
Power Distribution .....................................................................................................14
Clock Distribution .....................................................................................................15
RFClk (19.2 MHz Analog)...................................................................................... 15
RFConvClk (19.2 MHz digital) .............................................................................. 16
CBUSClk Interface ................................................................................................. 17
DBUSClk Interface ................................................................................................. 17
SLEEPClk (Digital)................................................................................................. 18
SLEEPClk (Analog)................................................................................................ 18
Charging operation ....................................................................................................19
Battery ..................................................................................................................... 19
Charging circuitry ................................................................................................... 20
Charger Detection ................................................................................................... 20
Charge Control ........................................................................................................ 21
Audio .........................................................................................................................21
Display and Keyboard ...............................................................................................22
Accessory ...................................................................................................................22
Test Points.................................................................................................................... 23
Troubleshooting/Flowcharts ........................................................................................ 25
Top troubleshooting map ...........................................................................................26
Phone is totally dead ..................................................................................................28
Flash programming doesn't work ..............................................................................29
Phone is jammed ........................................................................................................30
Power doesn't stay on or the phone is jammed .........................................................31
Charger ......................................................................................................................33
Audio faults ...............................................................................................................34
Earpiece................................................................................................................... 34
Microphone ............................................................................................................. 35
MIDI........................................................................................................................ 36
Vibra........................................................................................................................ 37
Display faults .............................................................................................................38
Keypad faults .............................................................................................................40
Power key................................................................................................................ 40
UI modules .............................................................................................................. 41
Issue 1 11/2002 Nokia Corporation Confidential Page 3
NPD-1
Troubleshooting -- BB CCS Technical Documentation
Page 4 Nokia Corporation Confidential Issue 1 11/2002
NPD-1
CCS Technical Documentation Troubleshooting -- BB
Troubleshooting Overview
The baseband module of the Eagle transceiver is a CDMA dual band engine. The baseband
architecture is based on the Columbia phone but includes some additional features, such
as MIDI and gray-scale LCD.
The baseband consists of three ASICs: Universal Energy Management (UEM), Universal
Phone Processor (UPP), and FLASH 64Megabit.
The baseband architecture supports a power-saving function called "sleep mode". This
sleep mode shuts off the VCTCXO, which is used as system clock source for both RF and
baseband. While in sleep mode, the system runs from a 32 kHz crystal and all the RF reg-
ulators (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 phone is awakened 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.
Eagle supports standard Nokia two-wire and three-wire chargers (ACP-x and LCH-9).
However, the three-wire chargers are treated as two-wire chargers. The PWM control
signal for controlling the three-wire charger is ignored. Charging is controlled by UEM
ASIC and EM SW.
BLC-2 Li-ion battery is used as main power source. BLC-2 has nominal capacity of
950 mAh.
Eagle supports Tomahawk accessories. The system connector for the Eagle phones is the
14-pin Tomahawk connector. The accessories supported include headset (HDB-4), loopset
(LPS-4), basic handsfree car kit (BHF-1), advanced car kit (CARKK-126), data cable
(DKU-5), and data/flash calbe (DKU-5F). The detection is based on the digital ID read
from the accessories.
Issue 1 11/2002 Nokia Corporation Confidential Page 5
NPD-1
Troubleshooting -- BB CCS Technical Documentation
PRODTP
VBatt
Sleep Clk VPP
Charger
32 KHz
Battery DC/DC Flash
Add/Data
ExBusC
System Connector
Bus
XMIC Input
VIO
XEAR Output UEM
FBusRx VANA
FBusTx
GenIO
VR1A Vflash1
VR1B RX I/Q Data
Vflash2
TX I/Q Data
VR2 UPP
RX Audio Data
VR3 TX Audio Data
CBus
VR4
DBus
VR5 MBus
FBus
VR6 RF_BUS
VR7
L CD Data Bus
VCTCXO
19.2 MHz
T X I/Q Data
LCD/Key
Front
End
UHF
SYNTH TX I/Q
Data
Robin
Front
Batman End
PA
VBatt
Figure 1: Eagle Block Diagram
Flash programming
Connections to Baseband
The flash programming equipment is connected to the baseband using test pads for gal-
vanic connection. The test pads are allocated in such a way that they can be accessed
when the phone is assembled. The flash programming interface uses the VPP, FBUSTX,
Page 6 Nokia Corporation Confidential Issue 1 11/2002
NPD-1
CCS Technical Documentation Troubleshooting -- BB
FBUSRX, MBUS, and BSI connections for the connection to the baseband. The connection
is through the UEM -- which means that the logic levels correspond to 2.7V. Power is
supplied using the battery contacts.
Baseband Power Up
The baseband power is controller by the flash prommer in production and in reprogram-
ming situations. Applying supply voltage to the battery terminals, the baseband will
power up. Once the baseband is powered, flash-programming indication is done as
described in the following section.
Flash Programming Indication
Flash programming is indicated to the UPP using MBUSRX signal between UPP and UEM.
The MBUS signal from the baseband to the flash prommer is used as clock for the syn-
chronous communication. The flash prommer keeps the MBUS line low during UPP boot
to indicate that the flash prommer is connected. If the UPP MBUSRX signal is low on
UPP, the MCU enters flash programming mode. In order to avoid accidental entry to the
flash-programming mode, the MCU only waits for a specified time to get input data from
the flash prommer. If the timer expires without any data being received, the MCU will
continue the boot sequence. The MBUS signal from UEM to the external connection is
used as clock during flash programming. This means that flash-programming clock is
supplied to UPP on the MBUSRX signal.
The flash prommer indicates the UEM that flash programming/reprogramming by writing
an 8-bit password to the UEM. The data is transmitted on the FBUSRX line and the UEM
clocks the data on the FBUSRX line into a shift register. When the 8 bits have been
shifted in the register, the flash prommer generates a falling edge on the BSI line. This
loads the shift register content in the UEM into a compare register. If the 8 bits in the
compare registers match with the default value preset in the UEM. The flash prommer
pulls the MBUS signal to UEM low in order to indicate to the MCU that the flash prom-
mer is connected. The UEM reset state machine performs a reset to the system, PURX low
for 20 ms. The UEM flash programming mode is valid until MCU sets a bit in the UEM
register that indicates the end of flash programming. Setting this bit also clears the com-
pare register in the UEM previously loaded at the falling edge of the BSI signal. During
the flash programming mode, the UEM watchdogs are disabled. Setting the bit indicating
end of flash programming enables and resets the UEM watchdog timer to its default
value. Clearing the flash programming bit also causes the UEM to generate a reset to the
UPP.
The BSI signal is used to load the value into the compare register. In order to avoid spuri-
ous loading of the register, the BSI signal will be gated during UEM master reset and dur-
ing power on when PURX is active. The BSI signal should not change state during normal
operation unless the battery is extracted; in this case, the BSI signal will be pulled high,
note a falling edge is required to load the compare register.
Flashing