Power key

The system boots up when power key is pressed (adequate battery voltage, VBAT, present). Power down can be initiated by pressing the power key again (the system is powered down with the aid of SW). Power on key is connected to EM ASIC (N2200) ASIC via PWRONX signal. Figure 68 Power distribution diagram Figure 68 Power distribution diagram All the above are powered by the main battery voltage. Battery voltage is also used on the RF side for power amplifiers (GSM PA) and for RF ASIC Ahne....

Backup battery troubleshooting

First, verify that the backup battery is empty (i.e. the voltage of the backup battery is < 1 V). During this measurement the main battery must be disconnected and the phone must be switched OFF Then connect the main battery and switch the phone ON. Monitor the voltage of the backup battery in order to verify that the voltage will rise. After a few minutes switch the phone off and disconnect the main battery and measure that the backup battery is charged. Typical behaviour of the backup...

Audio troubleshooting test instructions

Differential external earpiece and internal earpiece outputs can be measured either with a single-ended or a differential probe. When measuring with a single-ended probe each output is measured against the ground. Internal handsfree output is measured using a current probe, if a special low-pass filter designed for measuring a digital amplifier is not available. Note also that when using a current probe, the input signal frequency must be set to 2kHz. The input signal for each loop test can be...

Device memories

RAP memories NOR flash, NAND flash and DDR SDRAM Memory used in RM-170 171 consists of 256Mbit NOR flash memory, 256Mbit DDR-SDRAM and 1Gbit MuxOneNand. DDR-SDRAM is dynamic memory for Symbian SW. NOR and NAND flashes are used as a non-volatile memory storage for Symbian SW and user data. 16-bit DDR-SDRAM interface consist of SDRAM controller from ARM and DCDL DLLs. 16-bit muxed flash intreface is implemented by using EMC module. DDR-SDRAM core voltage (1.8V) is generated from Retu VDRAM and I...

Battery information

Note A new battery's full performance is achieved only after two or three complete charge and discharge cycles The battery can be charged and discharged hundreds of times but it will eventually wear out. When the operating time talk-time and standby time is noticeably shorter than normal, it is time to buy a new battery. Use only batteries approved by the phone manufacturer and recharge the battery only with the chargers approved by the manufacturer. Unplug the charger when not in use. Do not...

Phoenix audio loop tests and test results

The results presented in the table apply when no accessory is connected and battery voltage is set to 3.7V. Earpiece, internal microphone and speaker are in place during measurement. Applying a headset accessory during measurement causes a significant drop in measured quantities. The gain values presented in the table apply for a differential output vs. single-ended differential input. Figure 45 Differential output waveform of the Ext_in_IHF_out out loop measurement when speaker is connected....

Baseband functional description

Baseband Functional Block

Digital baseband consists of ISA based modem and application sections. Modem functionality is in RAP ASIC. The modem section consists of RAP ASIC and NOR Flash and SDRAM memory as the core. NOR Flash and SDRAM memories are in one package Combo RAP supports cellular protocols of GSM minimum EDGE glass 10, GPRS phase2 . Modem SDRAM memory has 128Mbits of memory and NOR flash has 256Mbits of memory. RAP operates with the system clock of 38.4 MHz, which comes from the VCTCXO. Figure 67 RM-170 171...

Operating modes of the display

The display is in a normal mode when the phone is in active use. The display is in a partial idle mode when the phone is in the screen saver mode. The operating modes of the display can be controlled with the help of Phoenix. Table 7 Display module troubleshooting cases Table 7 Display module troubleshooting cases There is no image on the display. The display looks the same when the phone is on as it does when the phone is off. The backlight can be on in some cases. Image on the display can be...

Bluetooth self tests in Phoenix Steps

Start Phoenix service software. 3. Place the phone to a flash adapter. 4. From the Mode drop-down menu, set mode to Local. 6. In the Self Tests window check the following Bluetooth related tests 7. To run the tests, click Start. Figure 43 Bluetooth self tests in Phoenix

Camera interface connections

Table 20 Camera interface connections Table 20 Camera interface connections Differential serial data, positive node Differential serial data, negative node Charger connector and charging interface connections amp electrical characteristics Table 21 Charging interface connections Charger connector and charging interface connections amp electrical characteristics Table 21 Charging interface connections Charging voltage charger detection, Center pin Table 22 Charging IF electrical characteristics...

Usbfbus connections and electrical characteristics

The USB operates in the low-power bus-mode only. The USB host provides VBUS voltage 5V, 100mA at maximum to USB device. The USB VBUS is connected to the input of the EM ASIC N2300 USB FBUS regulator, which output is 3.3V in USB mode. Headset hook detection interface XMICN electrical characteristics Headset hook detection interface XMICN electrical characteristics Two fixed thresholds inside N2200. Selectable by SW Audio signal electrical characteristics Audio signal electrical characteristics...

Tx power level tuning GSM Context

Because of variations at IC process and discrete component values, actual transmitter RF gain of each phone is different. Tx power level tuning is used to find out mapping factors called 'power coefficients'. These adjust the GSM transmitter output power to fulfill the specifications. For EDGE transmission the bias settings of the FEM are adjusted in order to improve linearity. This affects the PA gain and hence the power levels have to be aligned separately for EDGE transmission. Tx power...

Context

In each GSM Rx band, there's a band rejecting filter in front of RF ASIC front end. The amplitude ripple caused by these filters causes ripple to the RSSI measurement and therefore calibration is needed. The calibration has to be repeated for each GSM band. Steps 1. Connect module jig's GSM connector to signal generator. 2. From the dropdown menus, set Operating mode to Local, System mode to GSM, and Band to GSM900. 3. From the Tuning menu, choose GSM - gt Rx Band Filter Response Compensation....

Steps

Connect the communication tester to the GPIB bus. 2. Start Phoenix service software. 3. From the Tools menu, choose Options - gt GPIB Card. File Edit Product Flashing Testing Tuning Smart Card Activator Certificate Restore CU-4 Terminal Current Consumption Secure Watchdog Timer Label Printing Configuration Product Location Product Polling Rx Tuning Channel 4. In the Card Type line, select CEC8Bit, then click Start. After clicking Start, the name of the communication tester appears in the...