NEC DB2000 Service Manual Download Page 26

Page: 26 / 199

Part 4 : 13Mhz Clock

X200

2V8_RF1

13Mhz To Logic Board

GND

2V8_RF1

GND

6 5 2

TR204

IC201-#8

(IF/RF PLL)

The 13Mhz-clock (X200) consists of a TCXO ( Temperature Compensated Crystal
Oscillator ) which oscillates at a frequency of 13Mhz.

It is used within the LMX2331A Synthesisers on the TRX board and also in the
Superchip and Nell on the logic board.

TR204 and TR205 buffer the output to the logic board.

Summary of Contents for DB2000

Page 1: ...DB2000 Service Manual Help ...

Page 2: ...it Description provides functional details of the circuits block diagrams and component purpose descriptions 4 Servicing defines the jigs fixtures and test configurations required for servicing the product and describes the processes of assembly and disassembly 5 Troubleshooting provides an aid to fault finding the product Includes using the engineering functions signal levels and plots at various...

Page 3: ... ...

Page 4: ...Important One incorrect adjustment may result in the need for many more and result in extra 0 1 2 2 ...

Page 5: ... 2 3 4 2 2 2 2 2 0 0 0 5 3 4 2 6 2 7 2 2 2 2 0 8 9 2 2 2 2 2 2 2 2 ...

Page 6: ... 2 0 2 2 3 2 4 6 2 2 equipment is heavily soiled a soft cloth dampened with a mild synthetic detergent 2 2 3 4 2 ...

Page 7: ... 2 6 2 2 2 2 2 3 4 2 2 0 2 ...

Page 8: ... 2 ...

Page 9: ... Previous Section Next Section Main Menu Section 2 Unit Specifications ...

Page 10: ...ht 130g SIM Size Plug in SIM RF power output Class 4 GSM Transmitting Frequency Range Receiving Frequency Range TX RX Duplex Spacing Channel Spacing Number of Channels GSM 890 915 Mhz PCN 1710 1785 Mhz GSM 935 960 Mhz PCN 1805 1880 Mhz GSM 45 MHz PCN 95Mhz GSM 200 Khz PCN 200 Khz GSM 124 Numbered 1 to 124 PCN 374 Numbered 512 to 885 ...

Page 11: ...l 19 TX Frequency Output Low Channel Ch 1 Mid Channel Ch 62 High Channel Ch 124 TX Frequency Calculation Ftx TX UHF VCO Frequency Low Channel Ch 1 Mid Channel Ch 62 High Channel Ch 124 TX UHF VCO Freq Calculation Ftuhf TX VCO Frequency Phase Error Peak Phase Error RMS Phase Error 90Hz 33dBm 11 decrementing in 2dB steps 33dBm 2dB 31dBm 3dB 29dBm 3dB 27dBm 3dB 25dBm 3dB 23dBm 3dB 21dBm 3dB 19dBm 3dB...

Page 12: ...r Control Level 15 TX Frequency Output Low Channel Ch 512 Mid Channel Ch 699 High Channel Ch 885 TX Frequency Calculation Ftx TX UHF VCO Frequency Low Channel Ch 512 Mid Channel Ch 699 High Channel Ch 885 TX UHF VCO Freq Calculation Ftuhf TX VCO Frequency Phase Error Peak Phase Error RMS Phase Error 180Hz 30dBm 2dB 28dBm 3dB 26dBm 3dB 24dBm 3dB 22dBm 3dB 20dBm 3dB 18dBm 3dB 16dBm 3dB 14dBm 3dB 12d...

Page 13: ...MHz Frx 270 Fruhf MHz 540 MHz 270 MHz 540 2 270 MHz Type II BER 2 4 at 102dBm Type II BER 0 1 at 15dBm Receiver PCN RX Frequency Input Low Channel Ch 1 Mid Channel Ch 62 High Channel Ch 124 RX Frequency Calculation Frx RX UHF VCO Frequency Low Channel Ch 1 Mid Channel Ch 62 High Channel Ch 124 RX UHF VCO Freq Calculation Fruhf RX VCO Frequency Demodulation Frequency IF Frequency BER Bit Error Rati...

Page 14: ...n Next Section Main Menu Section 3 Circuit Description Part 1 Receiver Part 2 Transmitter Part 3 Power Amplifier Control Part 4 13Mhz Clock Part 5 Power Supplies and Control Signals RF Part 6 Logic Circuit Descriptions ...

Page 15: ...M path the RF signal passes into the BPF FL303 through a matching circuit and into IC300 29 At this stage the signal passes through a LNA within IC300 to improve the signal to noise characteristics This LNA is controlled by the enable supply V_G_LNA derived from IC27 29 and the output from IC300 26 is then fed to the input of BPF FL302 After this the RF signal is then passed to the Dual Balanced B...

Page 16: ... Outputs from the mixer are differential with the signals phase shifted by and 90 degrees These are then fed into a Dual IF SAW filter FL304 and then back into IC300 8 9 The RX IF of 270Mhz has been selected based on the number of image response and intermodulation products in the IF band subject also to the constraints that harmonics of the IF do not fall within any RX and TX band and harmonics o...

Page 17: ...00khz reference signal which is derived down from the 13Mhz clock A current phase difference signal is produced which is in turn converted to a voltage phase difference and filtered at the output on 3 using the loop filter R205 R206 R207 C215 C216 C217 This voltage is then applied to the control input 3 of the UHF VCO IC202 3 This voltage determines the RX UHF VCO oscillator frequency i e RX GSM 1...

Page 18: ...located inside IC300 The 540Mhz is reduced by a pre selectable divider which can be set by the control signal GSM_TX from IC27 23 The output from the 540Mhz oscillator is divided down by a factor of 2 or 3 to produce either a 180 or 270Mhz signal depending on whether the mobile is in TX or RX modes It is this signal which is mixed with that from the IF amplifier to produce the baseband I and Q sig...

Page 19: ...divider to 3 so therefore the 540Mhz is reduced to 180 Mhz which is output on pins 23 and 24 This signal is then fed to 16 of IC201 where it is then divided down by a factor of 180 to give a 1Mhz signal A 1Mhz reference signal derived from the 13Mhz clock is input to the phase comparator and compared with the 1Mhz signal derived from the 270Mhz signal The phase comparator then derives a current ph...

Page 20: ... TX or 180Mhz for PCN TX by the quadrature mixer inside IC100 The signal TX LO IF 180 270Mhz is input on 9 of IC100 W2013 from IC300 24 This signal is produced by the internal 540Mhz oscillator within IC300 which has been divided down by a factor of 2 for GSM TX or 3 for PCN TX This division factor is set by the control signal GSM_TX from IC27 23 The TX modulated IF signal of 270Mhz is output on 2...

Page 21: ...z signal or divided by 3 for PCN to produce a 180Mhz signal This signal is then fed to 16 IC201 and 9 IC100 the TX modulator At IC201 it is divided down further by a factor of 180 or 270 dependant on which tx band the mobile is set to This produces a 1Mhz signal which is then input to a phase comparator where it is compared with a 1Mhz signal derived from the 13Mhz clock to produce a current phase...

Page 22: ...915Mhz or PCN 1710Mhz 1785Mhz TX RF frequency This is achieved by mixing the TX IF signal with the TX UHF VCO output from IC202 for GSM and IC203 for PCN Hence GSM TX UHF VCO 270 ie 1160 270 890Mhz PCN TX UHF VCO 180 ie 1530 180 1710 Mhz The modulated RF signal is then output on 6 to a BPF and then re enters the PMB2333 IC101 102 at 2 The RF modulated signal is then amplified by the pre driver wit...

Page 23: ...to 5 IC201 and then pre scaled down to 200khz The phase comparator within IC201 compares this signal with a 200khz signal derived from the 13Mhz clock and outputs a current phase difference at 3 A loop filter then converts this signal into a voltage phase difference and feeds it to 3 IC201 or IC202 The voltage phase difference determines the UHF VCO frequency i e GSM TX 1160Mhz 1185Mhz PCN TX 1530...

Page 24: ...al to the output power and is measured as a voltage drop across a known resistance path or Fixed Control Loop Stripline This consists of a 47mOhm resistor R144 for GSM or two resistors in series a 47mOhm R144 and 27mOhm R136 for PCN The voltage drop V_ERROR is then integrated by the operational amplifier IC108 to give an error voltage which regulates the TXP signal The TXP input signal to the powe...

Page 25: ..._ON to enable the TX switching diodes D400 D401 The RF signal then passes through the diplexor and onto the antenna The diplexor is tuned to the GSM or PCN duplex spacing so enabling selectivity between GSM and PCN Rx or Tx Fig 9 The PA Control Circuit 4 VBAT VBAT VBAT_PCN 3 1 2 GND V_CONT V_CONT GND VCC 6 3 4 1 GND 2 V_CONT V_CONT GND TR110 TR109 D101 V_ERROR TR108 IC109 Fixed Control Loop Stripl...

Page 26: ... To IC201 8 IF RF PLL The 13Mhz clock X200 consists of a TCXO Temperature Compensated Crystal Oscillator which oscillates at a frequency of 13Mhz It is used within the LMX2331A Synthesisers on the TRX board and also in the Superchip and Nell on the logic board TR204 and TR205 buffer the output to the logic board ...

Page 27: ...1 synthesiser 2V8_RF2 Regulator 2 2 85V RF supply which supplies V_G_LNA and V_P_LNA 2V8_RF3 Regulator 1 2 85V RF supply used in the transmitter circuitry There are two enable signals which control the regulator s TCXO_ON Enables supplies 2V8_RF1 and 2V8_RF2 Signal derived from NELL P2 TX_ON Enables supply 2V8_RF3 signal derived from IC27 17 5 2 Control signals and additional power supplies The RF...

Page 28: ...of 2V8_RF3 used to turn on the preamplifier MMIC µPC2771 in the GSM TX path and the TX switching diode D400 PCN_PRE_ON Switched version of 2V8_RF3 used to turn on the preamplifier MMIC µPC2771 in the PCN TX path and the TX switching diode D401 GSM_LNA Control signal from the IC27 29 which switches V_G_LNA RX_ON2 Control signal for the 1st mixer RX demodulator and internal buffers PCN_ON Control si...

Page 29: ... and DSP Combined IC27 The Superchip combines the functions of both the CSP and DSP in a single package The device performs channel and speech coder decoder tasks equalisation encryption frame timing A D conversion RF power control and audio interfacing including tone generation Nell IC8 Nell incorporates the main CPU for the mobile and controls the functions Layer 1 2 and 3 software the SIM syste...

Page 30: ...90 controls the ramp shape from the RF Power amplifier Transmit I and Q outputs O P TIPI TINI TQPI and TQNI 86 89 Digital Audio Interface O P DAICK DAIRN DAIDI and DAIDO 6 9 Control outputs for the RF Circuit O P VCO_ON 16 Power enable for VCO TX_ON 17 Power enable for transmit circuitry GSM_ON 18 Power enable for GSM circuitry PCN_ON 19 Power enable for PCN circuitry PRE_ON 22 Power enable for RF...

Page 31: ... audio inputs outputs Serial Interface to NELL This is a direct serial I O interface to the NELL device used to pass data destined for the PCMCIA interface I O ICK 67 OCK 70 OLD 71 ILD 66 OBE 63 DSP RXD 64 and DSP TXD 65 Parallel Host Interface PHIF to CPU in NELL The DSP communicates with the CPU in NELL via a dedicated interface called the PHIF Parallel Host Interface I O PB0 PB7 32 40 Data I O ...

Page 32: ... 10 21 36 49 62 92 3VAUDIO 2 85 58 GND 11 20 31 42 52 69 76 91 61 AGND1 1 A functional block diagram of the A functional block diagram of the Superchip can be seen in Figure 10a Superchip can be seen in Figure 10a 6 2 NELL The NELL device is an in house designed ASIC A Applications S Specific I Integrated C Circuit which has been developed to replace the existing Albert and CPU devices currently u...

Page 33: ...to the mobile 4 The external sense line being activated 5 RTC alarm 6 Data being received from either the PCMCIA card or the hands free kit via the system connector 7 Keyboard scanning and decoding 8 Isolation reset and power control of the SIM interface 9 Control through a external device register that allows the display CPU RAM and Flash ROM CS lines to be activated A functional block diagram of...

Page 34: ...des a number of interface connections that enable the HHP to determine the battery type its capacity temperature and whether it is possible to re charge the cell s The thermister R124 which is attached to the logic board pcb is used to produce an analogue reading of the board s own surface temperature The P8 connector provides a connection between the battery power contacts VBAT GND to the RF boar...

Page 35: ...tery Identification NELL N9 The battery pack includes an internal thermister which is used to produce the analogue signal BATTEMPMON This enables the HHP and external charger to determine the battery temperature which is used to protect the battery from overheating while charging ...

Page 36: ... control aux_audio ear_audio_out digital audio interface dai_do_di_rn_ck CSP and DSP cores Combined in Superchip 1 CSP1089 core interrupt control and status error correction co processor 8 k x 16 bit of dual port ram 48k x 16 rom FLASH available for development timer nell_to_dsp_int INT0 csp_dsp_reset cs p_ to _d sp _in t IN T1 DSP1628 core 2v85_ln sio_input_clk sio_output_clk sio_output_load sio_...

Page 37: ...t isolated logic block arm7tdmi core dsp_to_nell_int EXTINT power control module isolation ram_cs external interface address bus data bus oe we rom_cs nell interrupt status and control 8 bit dac DAC2 csp_dsp_reset 2v85_main 2v85_ilb 2v85_main nell internal bus and data mux pcmcia_txd uart_txd 13_mhz_clk Note these i o ports revert to inputs when NELL is reg enable external devices register lcd_pwr...

Page 38: ... 3VILB 31 Logic supply rail 3VNELL 3 SIM supply configurable between 3 and 5 volt operation SIMVCC 6 Dedicated 5 volt supply for the transceiver VCO 5VRF 10 A low noise regulator for the handset audio and CSP analogue sections 3VSC 4 and 3VAUDIO 2 With the exception of regulator 1 each of these regulators can be controlled by individual enable signals These are configured as shown in Figure 6c and...

Page 39: ...ntrol management that enables the HHP to execute its power saving functions The ILB runs the 32kHz clock and controls the transition of the HHP between various power modes The ILB controls the power mode s of the HHP via two signals 1 RG3VPWR This connects to MiniMoe IC19 21 EN3 A high on this pin switches regulator 3 3VSC on thus powering IC27and the SRAM IC9 A low switches it off 2 HARD_PWR This...

Page 40: ...is also disabled This is achieved by the suspension of the HARD_PWR NELL P2 signal which inturn di activates both regulator 2 internal to MiniMoe and IC204 MicroMoe The ILB has a sleep function that allows its operation to be suspended for short periods of time If while the ILB is in sleep mode an asynchronous event is detected such as keypad press etc then it will automatically re activate and co...

Page 41: ...3 2 85v or 4 75v Regulator 5 5 0v Regulator 6 2 85v Regulator 7 Charge Pump disable disable disable disable disable disable 2 85v Regulator 4a 2v85_rf_a 5v RF VCO 5vRF 3VNELL Power on Reset 3VAUDIO audio h w 3VSC SIMVCC sim lcd VBAT at MiniMOE voltage divider network adc_ref 13 MHz TCXO Drivers RG3VPWR 2v85_ref sc1 audio rf_B 2 85v Regulator 4b 2 85v Regulator 4c rf_C 2v85_rf_b 2v85_rf_c These par...

Page 42: ...rstly output a high voltage on HARD_PWR P2 this is then fed to the input EN2 28 on MiniMoe which in turn activates regulator 2 internally and this then powers up the 3VNELL line The NELL flash PROM and EEPROM will now power up The HARD_PWR signal also activates the power supply MicrMoe IC204 which supplies the outputs 2V8_RF1 2V8_RF2 and 2V8_RF3 to sections of the RF circuitry The ILB then sets th...

Page 43: ...onnected to the row column matrix by three gold pads SW21 These perform the volume UP and DOWN functions The row and column lines of the keypad are connected to ports on the ILB section of Nell The rows KEYROW 0 5 are inputs with 50kΩ pull up resistors while the columns KEYCOL 0 3 are outputs When a key is pressed the corresponding row and column are connected together causing the row input to go ...

Page 44: ...and supplies power to the SIM connector 6 2 SIMRST NELL P5 This output connects to the SIM connector 2 It provides a reset function on the SIM card when performing data operations down Green Led NELL B6 Red Led NELL D6 GRN LED RED LED LCD_CS NELL N3 LCD PWR NELLl N3 Address Bus NELL C6 C12 Data Bus NELL A4 G2 LCD Graphical Display Module 1 2 3 SEND 4 5 6 7 8 9 0 up keycol 0 3 NELL H4 J3 keyrow 0 5...

Page 45: ...F 6 6 1 6 6 1 Microphone The microphone is mounted in the handset front cover and connects to the logic board via two sprung contacts on the P5 connector The audio signal is passed to the logic board and to pin D4 of the P6 Simple Hands Free SHF socket Inside the socket there is a miniature switch which is closed when there is no SHF connected With this switch closed this allows the audio signal t...

Page 46: ...sed as a reference voltage for this amplifier The TXAF signal is then input to the AUXIN 99 of IC27 The DC level of the signal is supplied to the AUXOUT pin 6 6 4 6 6 4 Buzzer Driver The buzzer or alerter is a piezo electric transducer which is driven by a pulse width modulated square wave from the PWMOUT output of NELL M14 TR4 and TR11 amplify the signal in order to achieve the specified loudness...

Page 47: ...which plugs into a socket mounted into the side of the mobile When the SHF lead is plugged in the mobiles mic and earpiece are disconnected When the SHF lead is not connected the mobiles internal microphone connected across P5 17 18 output passes through a switch normally closed fitted inside the SHF socket P6 B2 D4 and onto IC27 4 for processing If the SHF lead is connected then the switch contac...

Page 48: ...C27 GND AOUT BP AOUT BN 94 93 RXAF RXAF GND 96 95 C KIT AF OUT E P 3VAUDIO SHFREE NELL B7 P6 C3 A1 4 5 SHF E P GND GND D4 B2 SHF MIC HHP MIC AGND P5 18 17 MIC IN GND 3 VREG TXAF TXAF 3VAUDIO C KIT AF IN 99 AUX IN IC13 VBAT NELL M14 GND 3VNELL GND BUZZER 100dB ...

Page 49: ... Previous Section Next Section Main Menu Section 4 Section 4 Servicing Servicing Part 1 Cables Jigs and Fixtures Part 2 Equipment Configuration Part 3a Disassembly Part 3b Assembly ...

Page 50: ...res available for use on repair and test calibration stations 1 1 Inter board Connector Assembly M5 SP0104 This provides the connection between the logic and the TRX boards while the HHP is disassembled It allows maximum access to both sides of the boards for fault finding and repair ...

Page 51: ...th sides of the boards and should be used in conjunction with the Inter board Connector Assembly 1 2a Repair Fixture M5 SP0109 B The upgraded repair fixture allows for a more comprehensive test The fixture incorporates a microphone earpiece and sim test facility NOTE The microphone earpiece and sim test facility is also available as a separate upgrade M5 SP0109 C M5 SP0109 C ...

Page 52: ...ng It is approx 1metre in length and is terminated in a SMA connector 1 4 Data Test Cable M5 SP0101 The Data cable can be used on both repair and test calibration systems to enable control of the HHP through the I O port The data cable will be terminated with a 25 way female D type connector for compatibility with the test box or PC ...

Page 53: ...1 5 Dummy Battery M5 SP0102 The Dummy Battery will supply d c power to a fully assembled HHP It can be connected to a d c power supply or to the GSM Test Jig ...

Page 54: ... test sequences via a menu system It also provides remote operation of the HHP keypad The LCD unit indicates the menu status and displays information from the HHP LCD A 5v supply is required This unit is for use on a repair bench in conjunction with DC Power Leads Dummy battery RF and Data Test Cable ...

Page 55: ...al level converter acts as a 25 to 9 way interface between the PC controller and the HHP in the test calibration system The DB2000 Serial level converter requires an external 3 8V supply The D C socket and lead with banana plugs is used to supply the converter ...

Page 56: ... quoted 2 1 Repair bench configuration 5 0v dc Power Supply Logic and TRX boards DB2000 Repair Fixture DC Power Leads GSM PCN Test Jig GSM PCN test set Dummy battery optional Oscilloscope Spectrum Analyzer Data Test Cable RF Test Cable This configuration is only an illustration of the types of equipment required The requirement for a Spectrum Analyser in each set up will be dependent upon which GS...

Page 57: ...hich supports the equipment detailed in the illustration This equipment is GSM Test Set Hewlett Packard HP8922P or R DC Power Supply Hewlett Packard HPE3631A Controlling PC A minimum specification of P133 16Mb RAM Windows NT 3 5 A HP IB board should be fitted Flash down loader NEC Tech UK M5 SP0107 System I O cable NEC Tech UK M5 SP0101 Dummy battery NEC Tech UK M5 SP0102 Serial Level Converter NE...

Page 58: ...rap is worn and connected to an earth bonded bench before handling any components bench before handling any components Antenna Removal The Thread Antenna can be removed from the HHP assembly by hand Simply grip the wide part of the antenna and turn it anti clockwise until it is completely free and slide it out of the HHP assembly ...

Page 59: ...Removal of screws from the B Cover Two M1 6 countersunk screws Using a T6 Torx Screwdriver Remove the two M1 6 countersunk screws located towards the bottom of the HHP assembly ...

Page 60: ...he bottom of the HHP assembly and gently lift the B cover with Assembly away from the A cover This is made easier by gently easing the A cover sidewalls out since this will disengage the positioning clips on the B cover B Cover Positioning Clip A Cover ...

Page 61: ...Remove Keymat from A Cover ensuring that the metal pads remain in the back of the keymat Removal of the Window assembly from the A Cover By gently pressing against the Window assembly from the rear side of the A Cover the Window will push out ...

Page 62: ...necting the Vibrator Disconnect the vibrator by gently pulling the vibrator connector from the socket NB NB Ensure the vibrator wires are kept away from the Baseband Assembly when removing the Baseband board ...

Page 63: ...he retaining clips gently outwards and lift the baseband board slightly to release the SK500 socket from PL400 B B Raise the baseband board from the retaining clip side This will make dis assembly easier Locating Eyes Location tabs The next stage is to remove the baseband board away from the assembly This should be done in order to dislocate the location tabs from the locating holes The baseband b...

Page 64: ...d the LCD back over the buzzer Then from under the LCD remove the mylar tape fitted over the Ziff connector and flexi The locking wedges on either side of the connector should then be unlocked to free the LCD from the board Removal of I O Connector This can be simply removed by carefully pulling the connector away from the baseband board ...

Page 65: ... will allow the shield to be pulled out from under the clips and out of the B Cover assembly Removing the RF board from the B Cover The RF board is removed in a similar way to the board to board shield The screws that hold the RF board in position are removed with the board to board shield so the RF board is simply lifted out at an angle from under the positioning clips ...

Page 66: ...dling any components before handling any components Inspect all components for any obvious damage Inspect all components for any obvious damage NOTE Only tweezers with covered tips or Plastic tweezers are to be used when fitting the battery MOUNT THE BATTERY IN THE ORIENTATION SHOWN GROUND CONTACT CAREPOINT Check the ground contact shown above for any damage or solder on the raised face of the spr...

Page 67: ...g the RF board into the B Cover MOUNT RF BOARD INTO THE B COVER NOTE TWO LOCATION POINTS MOUNT THIS END OF THE RF BOARD INTO THE B COVER FIRST ENGAGE THE BATTERY CONNECTOR THEN LOWER THE OTHER END OF THE BOARD ...

Page 68: ...Mounting the volume switch into the B Cover MOUNT VOLUME KEY SWITCH INTO THE B COVER A B C SECTION A B GOES INSIDE SECTION B C GOES OUTSIDE THIS VIEW SHOWS THE KEYSWITCH IN PLACE ...

Page 69: ... LEADS MUST PASS THROUGH THE HOLDER THE FLAT SURFACES ON THE VIBRATOR GO TOP TO BOTTOM IN THE HOLDER NOTE THAT THE HOLDER HAS FILLED IN CORNERS AT THIS END TO ACT AS STOPS NOTE THE VIBRATOR WILL BE SUPPLIED IN ITS HOLDER BUT NOTE THE CORRECT WAY THEY FIT TOGETHER ...

Page 70: ... VIBRATOR IS IN PLACE DRESS THE LEADS THROUGH THE CUTOUT IN THE SHIELD INSERT THE VIBRATOR ASSEMBLY INTO THE BOARD TO BOARD SHIELD NOTE POSITION OF CUTOUT IN SHIELD WORK FROM THIS END OF THE SHIELD TAKE CARE NOT TO TOUCH THE GASKET MATERIAL ...

Page 71: ... THE TWO LOCATIONS POINTS ON THE BOTTOM OF THE SHIELD WHICH LOCATE INTO THE RF BOARD NOTE Ensure the flexi stays in the correct position and does not get damaged during this process BEND THE WIRES DOWN THE SIDE OF THE SHIELD AND USING A LABEL STICK THE WIRES TO THE SHIELD THEN BEND THE REMAINING WIRE UPWARDS THIS SHOULD KEEP THE WIRES IN PLACE TO HELP EASE ASSEMBLY OF SHIELD INTO B COVER ...

Page 72: ...Fitting three 8mm screws FIT AND TIGHTEN THE THREE SCREWS TO A TORQUE OF 0 2NM 0 02 TORX T6 BIT REQUIRED FOR SCREWDRIVER FIT CENTRE SCREW FIRST ...

Page 73: ...Fit I O connector to board Push the I O Connector onto the PCB until it locks into place Take care not to contaminate the PCB connections by touching them ...

Page 74: ...KING WEDGE FULLY IN THIS MAY REQUIRE PRESSURE APPLIED AT THE CENTRE OF THE CONNECTOR AS WELL AS THE TWO OUTER LUGS ZIFF CONNECTOR LOCATION PIPS LOCATION CLIPS ON BOTH SIDES FOLD THE LCD OVER SO THAT THE LOCATION PIPS ON THE LCD ENGAGE IN THE LOCATION HOLES IN THE BOARD AND THE RETAINING CLIPS ENGAGE OVER THE EDGES OF THE BOARD TAKE CARE WHEN PUSHING DOWN ON THE LCD TO ENGAGE THE RETAINING CLIPS PU...

Page 75: ...LOWER THE OTHER SIDE OF THE BOARD DOWN AS THE BOARD IS LOWERED THE CONNECTOR ON THE UNDERSIDE MUST MATE WITH THE ONE ON THE RF BOARD ENSURE THERE IS NO SLIDING ACTION OF THE BOARD AGAINST THE SHIELD AT THIS STAGE WHEN THE CONNECTORS ARE ENGAGED THE BOARD SHOULD BE PUSHED DOWN TO ENGAGE THE RETAINING CLIPS ON THE EDGE OF THE B COVER DO NOT PUSH ON THE LCD GLASS BOARD TO BOARD CONNECTORS ENSURE THAT...

Page 76: ...TAKE CARE WHEN FITTING THE BOARD THAT THE VIBRATOR WIRES ARE NOT TRAPPED AND THAT THEY ARE GUIDED THROUGH THE CUT OUT AT THE TOP OF THE BOARD RETAINING CLIPS ENGAGE OVER BASEBAND BOARD ...

Page 77: ... 1 2 ...

Page 78: ...LES ALMOST ALL THE WAY AT THIS POINT THE PINS ARE NOT YET ENGAGED INTO THE CONNECTOR ON THE OTHER SIDE OF THE BOARD PUSH THE CONNECTOR IN ALL THE WAY AND FEEL IT ENGAGE DRESS THE WIRES INTO THE GAP AT THE TOP OF THE BOARD THEN CAREFULLY FEED ANY EXCESS WIRE INTO THE CAVITY BETWEEN B COVER AND BOARD TO BOARD SHIELD ...

Page 79: ...D INSERT THE WINDOW INTO THE A COVER INSERT THE TAB AT THE TOP OF THE WINDOW INTO THE GAP IN THE A COVER NOTE NOTE ENSURE THE WINDOW IS FULLY PUSHED TOWARDS THE TOP OF THE PHONE BEFORE LOWERING IT INTO POSITION WHEN IT IS STUCK IN POSITION CHECK THERE IS NO GAP AT THE TOP OF THE WINDOW ...

Page 80: ...Mount Keymat into A Cover NOTE NOTE ENSURE ALL THE METAL PADS ARE IN PLACE ON THE BACK OF THE KEYPAD AFTER AFTER IT IS FITTED ...

Page 81: ...OP OF THE B COVER LOWER THE OTHER END OF THE B COVER ASSY INTO PLACE INSPECT THE DISPLAY FOR ANY DUST OR MARKS IF DUST OR MARKS ARE FOUND OPEN AND REPEAT BLOW OUT AND CLEAN SQUEEZE THE TWO PARTS TOGETHER UNTIL YOU FEEL THE CLIPS ON THE SIDE OF THE ASSEMBLY ENGAGE CARE POINT CARE POINT CHECK SPEAKER CONTACTS ARE NOT BENT FLAT OR DEFORMED FROM A 45 O ANGLE IN THE VERTICAL PLANE AND MORE THAN 2O IN T...

Page 82: ...Insert Screws into B Cover FIT AND TIGHTEN THE TWO SCREWS TO A TORQUE OF 0 15NM 0 02 TORX T6 BIT REQUIRED FOR SCREWDRIVER ...

Page 83: ...Fit Antenna INSERT AND SCREW THE ANTENNA INTO THE ASSEMBLY ...

Page 84: ...ction Main Menu Section 5 Troubleshooting Part 1 Equipment Configurations Part 2 Engineering Function Commands Part 3 Receiver RF Levels and Checks Part 4 Transmitter RF Levels and Checks Part 5 Test Signals Part 6 Fault Codes ...

Page 85: ...pare these signals with one s taken from faulty or suspect boards Part 1 Equipment configurations The test equipment configurations for repair and testing are shown below Figure 1 1 Repair bench configuration 3 8vdc Power Supply Logic and TRX boards DB2000 Repair Fixture DC Power Leads GSM PCN Test Jig GSM PCN test set Dummy battery optional Oscilloscope Spectrum Analyzer Data Test Cable RF Test C...

Page 86: ...ns will be available in the near future The Engineering functions which are listed here are those which have been implemented in the GSM Test Jig and are not a complete list of existing engineering functions ALT_SYNTH The synthesiser is alternatively programmed between two specified frequencies if the flag is set This is disabled through resending the message with the flag field set to 0 Function ...

Page 87: ...A mobile originated call can be made The mobile should be fitted with a test SIM and camped onto a carrier in order for this attempt to be successful The length field must contain the number of digits contained within the message the specified digits will be appended to any digits already on the display Function Id Number 6 Mode Non Suspend Parameter Range Purpose Result Length 1 20 Number of digi...

Page 88: ...spend Parameter Range Purpose Result Sum 0 65535 Checksum Flag 0 FAIL 1 PASS Indicates the result DROP This function will release an active call Function Id Number 16 Mode Non Suspend GAIN This allows the receiver AGC to be disabled and the in message values see below to be used instead Function Id Number 23 Mode Suspend Parameter Range Purpose Result Function Id Number 23 Mode 0 Fixed 1 Automatic...

Page 89: ...28 Mode Suspend Parameter Range Purpose Result On Off 0 Normal 1 Loop back Select audio loop back Audio source 1 microphone 2 Hands free microphone Select microphone Audio destination 1 Earpiece 2 Carkit speaker Select Loudspeaker READ_PORT This function reads the status of the CIF port lines and indicates whether they are configured as input or output Function Id Number 39 Mode Suspend Non Suspen...

Page 90: ...ion allows the receiver noise to be measured Function Id Number 46 Mode Suspend Parameter Range Purpose Result Signal Noise Distortion 0 65535 Digital representation of the SINAD measurement Noise Distortion 0 65535 Digital representation of the noise and distortion RXLEV This function returns the RXLEV and RSSI values of the current assigned channel Function Id Number 47 Mode Suspend Parameter Ra...

Page 91: ...VCO ON 0 low 1 high 2 leave sets the VCO On signal SET_TOD This function allows the clock to be set Function Id Number 50 Mode Suspend Non Suspend Parameter Range Purpose Result Year 1996 2200 Sets the year Month 1 12 Sets the month Day 1 31 Sets the Day Hour 0 23 Sets the Hour Minute 0 59 Sets the minute Second 0 59 Sets the second SIM This function allows SIM information such as clock stop mode ...

Page 92: ...ced into suspend mode Function Id Number 52 Mode Non Suspend READ_ALARM This function reads the current alarm setting Function Id Number 56 Mode Suspend Non Suspend Parameter Range Purpose Result Alarm On Off 0 Off 1 On Hour 0 23 Minutes 0 59 Seconds 0 59 READ_TOD This function allows the current time of day to be read from the clock Function Id Number 57 Mode Suspend Non Suspend Parameter Range P...

Page 93: ...16 Drop Tone 17 Error Tone 18 Ring Back Tone 19 Alert Tone 1 20 Alert Tone 1 HF 21 Alert Tone 2 22 Alert Tone 2 HF 23 Alert Tone 3 24 Alert Tone 4 25 Wake up Tone 26 Alarm tone 27 Battery Tone 28 Message Tone 29 Happy Tone 30 Sad Tone 31 Waiting Tone 32 Waiting Tone B 33 Notification Tone 34 Silence Forever 35 Short silence 36 Silence 37 Alert Tone 5 38 Alert Tone 6 39 Alert Tone 7 40 Auto redial ...

Page 94: ...number Transmit Burst Type 0 Off 1 Normal 2 Access 3 Continuous Not supported in DB2000 DB500 Selects the type of transmit burst Modulation 0 Zeroes 1 Ones 2 Pseudo random selects the modulation type Power Level 0 31 selects the Tx power level VERSION This function allows the hardware and software version numbers to be read Function Id Number 60 Mode Suspend Non Suspend Parameter Range Purpose Res...

Page 95: ...all icons on 1 Reverse Checker Board all icons on 2 LCD off i e no display 3 All segments on 4 Normal There are also two other responses to engineering functions These relate to problems with processing an engineering function request and are identified as follows Functions requiring longer than default time Function Id Number 254 Mode N A Parameter Range Purpose Result Requested EF Id 1 78 Extra ...

Page 96: ...Parameter Range Purpose Result Reason 0 Currently processing engineering function 1 Invalid Parameters 2 Not supported 3 Incompatible version number 4 Incorrect Mode 5 Invalid state 6 General failure ...

Page 97: ...the following menu options to put the hhp into receive mode Press C RX Options Once this key is pressed the hhp should display Suspend Mode Function Id This message indicates that the HHP has entered engineering test mode Press A or B according to which rx frequency band is required A GSM900 ARFCN 62 B GSM1800 ARFCN 699 The hhp is now set to receive mode Continuous on channel 62 or 699 respectivel...

Page 98: ...PUPLO2 36 31 20 21 17 V_P_LNA PC N 46 45 40 39 AGC Control Diplexer TCX O 13Mhz to logic 2v85_rf 1 L305 32 35 23 24 4 X200 13Mhz CLK Loop Filter LNA LNA GSM Ra Ri PCN R1 R10 5 1 3 Ra 57dbm C411 R2 54dbm C400 Rb 56dbm R3 54dbm R4 56dbm R5 40dbm R6 44dbm Rc 56dbm Rd 28dbm R1 67dbm Re 41dbm Rf 40dbm 5 Rh 30dbm Ri 33dbm R7 47dbm Rg 27dbm R8 20dbm R9 32dbm R10 38dbm From UHF VCO From IF PLL As Fig 2 9 ...

Page 99: ...is part of the receiver circuit 1 V_G_LNA 2 85V supply which powers the GSM LNA and TX RX switching diode pack D400 See figure 3 4 2 V_P_LNA 2 85V supply which powers the PCN LNA and TX RX switching diode pack D401 See figure 3 5 3 RX_ON2 Control signal which supplies the GSM LNA the RX demodulator and internal buffer s See figure 3 6 4 2V85_RF2 A 2 85V power supply derived from MicroMoe IC204 whi...

Page 100: ... Figure 3 2 UHF VCO s and Synthesiser RX Channel VCO Input Voltage Output Level in dbm s VCO Frequency 1 2 5 V d c 21dbm 1205 Mhz 62 2 8 V d c 21dbm 1217 4 Mhz 512 1 8 V d c 11dbm 1535 Mhz 698 2 5 V d c 11dbm 1572 4 Mhz DIV 65 LOOP FILTER PRE SCALER IC201 LMX2331L RF PLL IC202 3 PHASE COMPARATOR IN OUT 3 2 4 3 5 PHASE DIFFERENCE CURRENT PHASE DIFFERENCE VOLTAGE 13MHz CLK 8 VCC GND 1 NC V_VC01 2 5 ...

Page 101: ...modulator Part 3 5 Receiver demodulated I and Q Signals When it has been established that all the afore mentioned signals supplies and RF levels are correct then on IC300 pins 39 40 45 46 there should be output the demodulated I and Q signals These are then presented to the logic board for conversion into data Please refer to figure 3 for the correct waveform shape and characteristics Note When ch...

Page 102: ...lowing menu options to put the hhp into receive mode Press B TX Options Once this key is pressed the hhp should display Suspend Mode Function Id This message indicates that the hhp has entered engineering test mode Press A or B according to which tx frequency band is required Option A GSM900 ARFCN 62 Transmit burst type Normal Modulation Ones and Power Level 5 Option B GSM1800 ARFCN 699 Transmit b...

Page 103: ...6 BPF BPF IC104 3V_G_TX 7 3V_P_TX 7 Diplexor GND GND 3V_P_TX 3V_G_TX TR106 TR107 From UHF VCO TX_LO_IF TA 37dbm TIPI TINI TQPI TQNI 1 16 20 9 IC100 2v85_rf3 4 5 6 7 T1 28dbm TB 35dbm T2 40dbm T3 14dbm TB 15dbm TD 18dbm TE 31dbm TF 24dbm TG 7dbm TI 24dbm TH 16dbm TJ 12dbm TK 1dbm TL 2dbm TM 2dbm TN 12dbm T4 23dbm T5 27dbm T6 38dbm T7 18dbm T9 23dbm T8 23dbm T12 6dbm T13 4dbm T14 10dbm T15 4dbm T10 ...

Page 104: ...2 85V supply which feeds parts of the GSM TRX path See figure 4 5 4 3V_P_TX A 2 85V supply which feeds parts of the PCN TRX path See figure 4 6 5 GSM_ON Control signal from Superchip which switches 2 85V through to GSM_PRE_ON See figure 4 7 6 PCN_ON Control signal from Superchip which switches 2 85V through to PCN_PRE_ON See figure 4 8 7 PRE_ON Control signal from Superchip which enables 2V8_RF2 t...

Page 105: ...for the relevant control voltages and RF levels Figure 4 2 The TX IF Synthesiser 1 5 V d c 2 8 V d c PCN 23 dbm 180 Mhz GSM 23 dbm 270 Mhz DIV 13 LOOP FILTER DIV 180 270 IC201 LMX2331L IF PLL PHASE COMPARATOR 23 24 PHASE DIFFERENCE CURRENT PHASE DIFFERENCE VOLTAGE 13MHz CLK 8 1Mhz 1Mhz GND IC300 32 33 34 35 18 16 180 or 270Mhz 180 or 270Mhz D303B D303A 2 3 540Mhz PUPLO2 31 To W2013 ...

Page 106: ...Part 5 Test Signals Fig 3 4 V_G_LNA Pg 3 5I TP300 Fig 3 5 V_P_LNA Pg 3 5J TP301 Fig 3 6 RX_ON2 Pg 3 16G TP405 ...

Page 107: ...Fig 3 7 GSM_LNA Pg 3 3I TP419 Fig 3 8 PCN_LNA Pg 3 3J TP420 Fig 4 9 TCXO Pg 2 H11 TP413 ...

Page 108: ...Fig 4 0 GSM Rx I Q s Pg 3 E F15TP406 7 Fig 4 1 PCN Rx I Q Pg 3 E F15 TP406 7 Fig 4 2 GSM_TX Pg 1 1I TP403 ...

Page 109: ...Fig 4 3 PCN_TX Pg 1 1J TP417 Fig 4 4 3V_G_TX Pg 1 4I TP100 Fig 4 5 3V_P_TX Pg 1 4J TP101 ...

Page 110: ...Fig 4 6 GSM_ON Pg 1 2K TP402 Fig 4 7 PCN_ON Pg 1 1K TP415 Fig 4 8 PRE_ON Pg 1 4J TP416 ...

Page 111: ...Fig 4 9 GSM_PRE_ON Pg 1 3K TP102 Fig 4 10 PCN_PRE_ON Pg 1 4K TP103 Fig 4 11a Tx I Q Burst Pg 1 1E TP408 22 See Fig 4 11b ...

Page 112: ... I Q ...

Page 113: ...Fig 4 14 V_ERROR PCN Pwr Lvl 7Pg 1 16I Fig 4 15 300khz Charge Pump Pg 1 Log 9G ...

Page 114: ...tres Code 101 This indicates a power up ROM checksum failure Code 102 This indicates a power up RAM check failure i e a failure in writing to or reading from the RAM locations Code 111 This indicates a difference in the layer 1 calibration checksum stored in EEPROM compared to the calculated checksum value Code 120 This indicates a difference in the Battery Management checksum stored in EEPROM com...

Page 115: ... Previous Section Next Section Main Menu Section 6 Device Device Information Information ...

Page 116: ...M5 TV0443 1SS355TE 17 D2 D4 This is a surface mount high speed switching diode M5 TV0404 UDZTE 1751B ZENER DIODE D25 This is a Surface Mount 5 1V Zener Diode ...

Page 117: ...M5 TV0522 BYS10 SCHOTTKY DIODE D26 Schottky barrier rectifying diode M5 TV0417 DA204UT106 DIODE D47 D200 2 1 3 3 1 2 D2 D1 This is a Silicon Epitaxial Rectifying Schottky Barrier Diode ...

Page 118: ...M5 TV0525 UDZTE 1739B ZENER DIODE D49 This is a surface mount 3 9V zener diode M5 TV0521 DAP222 DIODE D100 2 1 3 3 1 2 D2 D1 This is a epitaxial planar switching diode ...

Page 119: ...M5 TV0514 BAR64 05 SILICON DIODE D300 D400 D401 2 1 3 3 1 2 D2 D1 High voltage silicon diode for frequencies up to 3Ghz M5 TV0519 B8Y51 SILICON DIODE D303 3 2 1 This is a dual tuning diode ...

Page 120: ... 11 DATA10 41 HARDPWR 71 ADC_AGND2 12 DATA11 42 ILBPORT0 72 DAC_AGND1 13 PORT15 43 EXTSENSE 73 DAC_AVDD 14 DATA12 44 CHARGER 74 DAC1 15 DATA13 45 GND 75 DAC2 16 DATA14 46 ILBTST 76 VREFDAC 17 DATA15 47 ILBRST 77 DAC_AGND2 18 PSUSYNC 48 SIMDATA 78 VDD 19 UARTTX0 49 SIMRST 79 GND 20 DSPINTO 50 SIMCLK 80 PCNC1ATX 21 GND 51 SIMPWR 81 DSPRXD 22 RG3VPWR 52 PCMCIARX 82 PWMOUT 23 KEY1 53 RAMCS 83 DSPTXD 2...

Page 121: ... 141 PORT5 98 TEST5 120 A4 142 A19 99 TEST4 121 A5 143 A20 100 TEST3 122 PORT0 144 PORT6 101 TESTT2 123 PORT1 145 PORT7 102 EXTINT 124 A6 146 VDD 103 LCDDATA 125 A7 147 PORT8 104 nTRST 126 A8 148 PORT9 105 TDO 127 A9 149 PORT10 106 VDD 128 A10 150 DATA0 107 GND 129 PORT2 151 DATA1 108 TDI 130 PORT3 152 DATA2 109 TMS 131 A11 153 DATA3 110 TCK 132 A12 154 PORT1 111 MODE 133 A13 155 PORT2 112 FLASHRS...

Page 122: ...S951 OPERATIONAL AMPLIFIER IC13 29 105 108 109 1 2 3 4 5 Vcc SOT 23L OUTPUT Vcc NON INV INPUT INV INPUT Low Power Rail to Rail Single Operational Amplifier M5 TY0003 SOT23 5 2 INPUT AND GATE IC18 Vcc GND 1 2 3 4 5 ...

Page 123: ...r Capacitor Connection GND_1 7 I Ground for Charge Pump GND 8 I Ground GND 9 I Ground OUT6 10 O Regulator 6 Output Filter Capacitor Connection VIN 11 I Supply Voltage of 5V LDO s Charge Pump output BUB 12 O Backup battery buffer output gate of external PMOS D1 13 O Square Wave out for Charge Pump VS1IN 14 I Battery Supply of Charge Pump B1 15 I Boost Voltage GND 16 I Ground GND 17 I Ground SEL 18 ...

Page 124: ... R5 R6 and R7 from being switched off by UVLO2 EN2 28 I R2 Enable A logic low on EN2 turns off regulator 2 VCC2 29 I Battery Supply Voltage entire chip disabled if this pin is disconnected EN7 30 I R7 Enable A Logic low on EN7 turns off regulator 7 OUT1 31 O Regulator 1 Output Filter Capacitor Connection GND 32 I Ground M5 TY0004 EMI FILTER WITH ESD PROTECTION IC22 23 24 25 31 32 6 4 1 2 3 R R R R...

Page 125: ...AIRN MICOUT MICIN VREG VDDA OCTL9 PB2 PB1 PBO PIDS VSS PODS PBSEL PCSN PSTAT PIBF INTO RSTB PB3 VDD PB4 PB5 PB6 PB7 VSS OCTL13 OCTL12 OCTL11 OCTL10 EXTD1 IOBIT4 IOBIT5 IOBIT6 IOBIT7 OLD OCK VSS VDD ICK ILD DI DO OBE TRST VSSP MC2 MC1 VDDP TDI TDO TMS TCK IBF VSS GNDB AOUTAN VDDD GNDD TXP TXIP TXQP TXQN VDDB VADP VADN VADCM TXVCM RXIP RXIN RXQP RXQN VXVCM AUXIN AOUTAP AUXOUT REFC AOUTBP AOUTBN TXIN...

Page 126: ...olled by the state machine or controlled by OCTLC OCTLD manual control Low reset 18 OCTL3 I O Control output control pin 3 19 OCTL4 O D Control output control pin 4 20 VSS gnd Digital ground 21 VDD pwr 3V digital supply 22 24 OCTL 6 8 O D Output control pins 6 7 8 are controlled by state machine or controlled by OCTLC OCTLD manual control Low reset 25 VPP VDD pwr Flash ROM supply digital supply 26...

Page 127: ...nent positive output 81 TXVCM I O A Baseband TX external ref Sets common mode of I s and Q s 82 VADCM O A Baseband 1 4V analog reference for ADC 83 VADN O A Baseband reference for ADC negative 84 VADP O A Baseband reference for ADC positive 85 VDDB pwr 3V baseband analog supply 86 TXQN O A Baseband transmit Q component negative output 87 TXQP O A Baseband transmit Q component positive output 88 TX...

Page 128: ...C FILTA FILTB I I Q Q LO1REF LO1 GND VCC RFOUT GND GND ENB APC GND GND LO2REF LO2 GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 LO1 LO1REF Q Q I I LO2 LO2REF EXTERNAL FILTER RFOUT ENB APC VCC GND RFOUT POWER CONTROL VOLTAGE REF W2013 BLOCK DIAGRAM ...

Page 129: ...C 4 5 I I Differential baseband inputs 6 7 Q Q Differential baseband inputs 8 9 LO1REF LO1 First local Oscillator Input Either pin may be directly grounded 10 11 14 15 17 18 GND Power Supply Ground 12 13 LO2 LO2REF Second Local Oscillator Input Either pin may be directly grounded 16 ENB APC Enable Automatic Power Control 19 RFOUT RF Output 20 VCC Positive Supply Voltage For high power output stage...

Page 130: ...utput inverted 7 VCC Voltage supply total circuit 8 LOX Mixer local oscillator signal base input inverted 9 LO Mixer local oscillator signal base input 10 GND2 Mixer Ground 11 MI Mixer signal emitter input 12 MIX Mixer signal emitter input inverted 13 STB Standby mixer and bandgap 14 GND1 Amplifier ground 15 AO Amplifier signal open collector output 16 GC Amplifier gain control 15 14 13 12 11 10 9...

Page 131: ... 3 6 5 4 IN GND VCC GND OUT GND Surface Mount Silicon Monolithic Medium Power High Frequency Amplifier M5 TQ0433 PF01411B 5W POWER AMP GSM IC106 Pin GND Vdd Pout GND Vapc Usable Frequency Range 880 to 915 MHz Typical Output Power 34 2 dBM 3volts 1 4 3 2 ...

Page 132: ...M5 TQ0432 PF0414B 3W POWER AMP GSM 1800 IC107 Pin GND Vdd Pout GND Vapc 2 3 Usable Frequency Range 1710 to 1785 MHz Typical Output Power 31 5 dBM 3volts 1 4 2 3 ...

Page 133: ...escaler input Small signal input from VCO 6 f IN RF RF prescaler complementary input 7 GND Ground for RF analogue circuitry 8 OSCin Oscillator input 9 GND Digital ground 10 Fo LD O N C 11 CLOCK I Clock input Data is clocked in on the rising edge 12 DATA I Binary serial data input 13 LE I Load enable control input for internal shift registers 14 GND Ground for IF analogue circuitry 15 f IN IF RF pr...

Page 134: ... IF PRESCALER 15 BIT IF N COUNTER OSC DATA LE RF PRESCALER 22 BIT DATA REGISTER 18 BIT RF N COUNTER FASTLOCK PHASE COMP CHARGE PUMP RF LD 15 BIT RF R COUNTER 15 BIT IF R COUNTER PHASE COMP CHARGE PUMP IF LD fOUT LOCK DETECT FASTLOCK MUX ...

Page 135: ...M5 TQ0443 MQE901 1195 GSM VCO IC202 GSM Voltage Controlled Oscillator PIN DESCRIPTION 1 N C 2 OUTPUT 3 CONTROL VOLTAGE 4 POWER SUPPLY 1 G 2 3 G 4 9 0 1 1 1 9 5 ...

Page 136: ...M5 TQ0444 MQE920 1570 PCN VCO IC203 PCN Voltage Controlled Oscillator PIN DESCRIPTION 1 N C 2 OUTPUT 3 CONTROL VOLTAGE 4 POWER SUPPLY 1 G 2 3 G 4 9 2 0 1 5 7 0 ...

Page 137: ...r Q Sec Mixer I 18k 18k 2k 2k 2k 2k Diff op Amp S H Switch Divider 2 3 16 bit shift register and decoder Stand by RF Output Driver First Mixer PGC LO2O LO2OX GND MOX MO VS1 LO1 LO1X GND RXON1 SI SIX RXON2 LO2 LO2E LO2EX LO2X PUPLO2 GND AI AREF VS3 AO GND3 REFIQ FBQ QRX QR FBQX REFOQ REFOI FBI IRX IR FBIX REFII VS2 DIV23 GND CSH1 CSH2 GND OCE IFI IFIX SYGCDT SYGCCL PGCSTR 25 37 13 1 ...

Page 138: ...M5 TY0442 DPX321880OT DIPLEXOR IC400 02 1 2 3 4 5 6 GSM GND GSM1800 GND COMMON GND M5 TQ0426 13Mhz TCXO X200 O P GND N C Vcc GND GND 13 Mhz TCXO Temperature compensated crystal oscillator ...

Page 139: ... FET TR3 4 5 6 3 2 1 SOURCE SOURCE DRAIN GATE DRAIN DRAIN Surface Mount P Channel Logic Level Enhancement Mode FET M5 TV0470 UMX1NTR NPN TRANSISTOR TR4 28 32 3 2 1 4 5 6 Surface Mount NPN Silicon Epitaxial Planar Transistor Pack ...

Page 140: ...TRANSISTOR TR11 12 29 108 109 2 1 3 EMITTER BASE COLLECTOR Surface Mount NPN Silicon Epitaxial Planar Transistor M5 TV0487 2SJ203 T2B P CHANNEL MOSFET TR25 301 302 2 1 3 SOURCE GATE DRAIN Surface Mount P Channel Mosfet Switch ...

Page 141: ...SFET TR100 201 202 203 2 1 3 SOURCE GATE DRAIN DRAIN GATE SOURCE Surface Mount P Channel MOSFET with Parasitic Drain Source Diode M5 TV0516 SI2301DS P CHANNEL MOSFET TR101 102 103 104 105 1 2 3 G S D Surface Mount P Channel MOSFET ...

Page 142: ...P405 RF TRANSISTOR TR106 300 4 3 1 2 Emitter Collector Base Emitter This is a surface mount NPN Silicon RF Transistor M5 TV0517 MRF1047T NPN TRANSISTOR TR107 205 Emitter Base Collector Surface Mount NPN Transistor ...

Page 143: ...M5 TV0403 UMC4 TRANSISTOR SW PACKAGE TR110 111 3 2 1 4 6 C4 Marking This is a Dual Surface Mount Silicon Epitaxial Planar Transistor Package ...

Page 144: ...M5 TV0501 2SC4180 T1 NPN TRANSISTOR TR200 TR204 Emitter Base Collector Surface Mount NPN Epitaxial Planar Transistor ...

Page 145: ... Previous Section Next Section Main Menu Section 7 Parts Part 1 Exploded View Part 2 Assembly Parts Part 3 Baseband Board Parts Part 4 RF Board Parts ...

Page 146: ...N50490 0A 5 Volume Keymat M5 N50491 0A 6 Coaxial Switch Connector M5 NJ0439 7 IO Connector M5 NJ0432 0A 8 Lightguide M5 ND0425 0A 9 LCD Assy M5 NP0409 0A 10 Window Assembly M5 N50314 0A 11 950mah Battery Pack Assy 12 Battery Pack Latch M5 N50450 0A 13 RF PCB 14 Baseband PCB 15 Volume Switch M5 NS0405 0A 16 Board to Board Shield M5 N60439 0A 17 Receiver M5 ND0431 0A 18 Buzzer M5 ND0423 19 Antenna S...

Page 147: ...346 C008 M5 N50718 0A A COVER ASSEMBLY Cerene Silver 144 619346 C009 M5 N60005 EARTH CONTACT MRD MMP 0003 01 M5 N60439 0A BOARD TO BOARD SHIELD 144 619374 M5 N60440 G4H COAXIAL CONNECTOR SEAL 144 619371 M5 N60442 0B G4H ANTENNA CONTACT 144 619369 M5 N60446 0A G4H B COVER SHIELDED 144 619419 M5 N60447 0A B COVER GASKETED 144 619420 M5 N60448 0A M1 6 THREADED INSERT MRD SCW 0016 02 M5 N60449 0A M1 6...

Page 148: ... 0803 13 C56 M5 TC3171 100n Capacitor 6 3V 10 X5R 0402 P0 M5 TC3171 MRD CAP 0496 07 C57 M5 TC3172 100n Capacitor 6 3V 10 X5R 0402 P0 M5 TC3172 MRD CAP 0496 08 C64 M5 TC0012 1u Capacitor 6 3V 10 X5R 0603 P0 M5 TC0012 MRD CAP 0496 09 C70 M5 TC2044 33p Capacitor 50V 5 COG 0402 P0 M5 TC2044 MRD CAP 0805 19 C74 M5 TC3030 1n Capacitor 50V 5 X7R 0402 P0 M5 TC3030 MRD CAP 0807 13 C78 M5 TC3036 3n3 Capacit...

Page 149: ... Capacitor 6 3V 10 X5R 0603 P0 M5 TC0012 MRD CAP 0496 09 C140 M5 TC2053 220p Capacitor 50V 5 COG 0402 P0 M5 TC2053 MRD CAP 0805 29 C151 M5 TC3188 22n Capacitor 16V 10 X7R 0402 P0 M5 TC3188 MRD CAP 0803 33 C152 M5 TC3188 22n Capacitor 16V 10 X7R 0402 P0 M5 TC3188 MRD CAP 0803 33 C155 M5 TC3042 10n Capacitor 50V 5 X7R 0402 P0 M5 TC3042 MRD CAP 0807 25 C163 M5 TC1976 10p Capacitor 50V 1 COG 0402 P0 M...

Page 150: ...C0012 1u Capacitor 6 3V 10 X5R 0603 P0 M5 TC0012 MRD CAP 0496 09 C236 M5 TC0012 1u Capacitor 6 3V 10 X5R 0603 P0 M5 TC0012 MRD CAP 0496 09 C237 M5 TC0012 1u Capacitor 6 3V 10 X5R 0603 P0 M5 TC0012 MRD CAP 0496 09 C238 M5 TC0012 1u Capacitor 6 3V 10 X5R 0603 P0 M5 TC0012 MRD CAP 0496 09 C239 M5 TC0012 1u Capacitor 6 3V 10 X5R 0603 P0 M5 TC0012 MRD CAP 0496 09 C240 M5 TC0012 1u Capacitor 6 3V 10 X5R...

Page 151: ...M5 TC1988 100p Capacitor 50V 1 COG 0402 P0 M5 TC1988 MRD CAP 0803 25 C278 M5 TC3184 100n Capacitor 6 3V 10 X5R 0402 P0 M5 TC3184 MRD CAP 0496 20 C282 M5 TC0459 100n Capacitor 16V 10 X7R 0603 P0 M5 TC0459 MRD CAP 0416 37 C283 M5 TC2044 33p Capacitor 50V 5 COG 0402 P0 M5 TC2044 MRD CAP 0805 19 C284 M5 TC2044 33p Capacitor 50V 5 COG 0402 P0 M5 TC2044 MRD CAP 0805 19 C286 M5 TC2049 100p Capacitor 50V ...

Page 152: ...V0528 MRD DSI 0052 01 D33 M5 TV0524 BAT54S Schottky Diode 30V 200mA sot23 P0 M5 TV0524 MRD DSI 0048 01 D36 M5 TV0527 CL220YG Right Angle Mount LED P0 M5 TV0527 MRD LED 0009 01 D37 M5 TV0420 CL170YG LED 2 6V Dual Colour Yellow Green P0 M5 TV0420 MRD LED 0002 01 D38 M5 TV0527 CL220YG Right Angle Mount LED P0 M5 TV0527 MRD LED 0009 01 D39 M5 TV0527 CL220YG Right Angle Mount LED P0 M5 TV0527 MRD LED 0...

Page 153: ...w Dropout TBA P0 NF_P0 DEV UAN 0123 IC31 M5 TY0004 EMIF01 5250SC5 EMI Filter with ESD Protection P0 M5 TY0004 MRD UAS 0005 01 IC32 M5 TY0004 EMIF01 5250SC5 EMI Filter with ESD Protection P0 M5 TY0004 MRD UAS 0005 01 L2 M5 TL0401 10uH Inductor Low DC Res 10 Ferrite Core 1008 P0 M5 TL0401 MRD LLF 0002 12 P2 M5 TJ0003 5607xx 1 AMP 2 Way Vibrator Connector G4H P0 M5 TJ0003 MRD JMU 0043 01 P5 M5 NJ0432...

Page 154: ...R0930 10k Resistor 1 16W 1 0402 P0 M5 TR0930 MRD RES 0095 01 R96 M5 TR1446 1k8 Resistor 1 16W 1 0402 P0 M5 TR1446 MRD RES 0105 61 R98 M5 TR1450 3k Resistor 1 16W 1 0402 P0 M5 TR1450 MRD RES 0105 65 R101 M5 TR1030 100k Resistor 1 16W 1 0402 P0 M5 TR1030 MRD RES 0096 05 R102 M5 TR0834 1k Resistor 1 16W 1 0402 P0 M5 TR0834 MRD RES 0094 01 R105 M5 TR0930 10k Resistor 1 16W 1 0402 P0 M5 TR0930 MRD RES ...

Page 155: ...84 M5 TR1519 0R Resistor zero ohm link 0402 P0 M5 TR1519 MRD RES 0107 01 R185 M5 TR1489 330k Resistor 1 16W 1 0402 P0 M5 TR1489 MRD RES 0106 05 R188 M5 TR1474 47k Resistor 1 16W 1 0402 P0 M5 TR1474 MRD RES 0105 89 R194 M5 TR1474 47k Resistor 1 16W 1 0402 P0 M5 TR1474 MRD RES 0105 89 R195 M5 TR1432 330R Resistor 1 16W 1 0402 P0 M5 TR1432 MRD RES 0105 47 R196 M5 TR1122 1M Resistor 1 16W 1 0402 P0 M5...

Page 156: ...1 SMK Spring Terminal P0 M5 N60005 MRD MMP 0003 01 TR3 M5 TV0485 NDC652P P Channel Logic Enhancement Mode FET 1 6W P0 M5 TV0485 MRD QBL 0041 01 TR4 M5 TV0470 UMX1N Dual Planar NPN Transistor 150mW P0 M5 TV0470 MRD QBL 0035 01 TR11 M5 TV0466 2SC2411K Planar NPN Transistor 200mW P0 M5 TV0466 MRD QBL 0039 01 TR12 M5 TV0466 2SC2411K Planar NPN Transistor 200mW P0 M5 TV0466 MRD QBL 0039 01 TR25 M5 TV04...

Page 157: ... TC2835 10n Capacitor 16V 10 X7R 0402 P0 M5 TC2835 MRD CAP 0837 25 C114 M5 TC2044 33p Capacitor 50V 5 COG 0402 P0 M5 TC2044 MRD CAP 0805 19 C115 M5 TC1156 100p Capacitor 16V 5 COG 0402 P0 M5 TC1156 MRD CAP 0822 25 C116 M5 TC1148 22p Capacitor 16V 5 COG 0402 P0 M5 TC1148 MRD CAP 0822 17 C117 M5 TC1152 47p Capacitor 16V 5 COG 0402 P0 M5 TC1152 MRD CAP 0822 21 C118 M5 TC2823 1n Capacitor 16V 10 X7R 0...

Page 158: ...4p Capacitor 16V 0 25p COG 0402 P0 M5 TC3179 MRD CAP 0822 37 C145 M5 TC3177 2p Capacitor 16V 0 25p COG 0402 P0 M5 TC3177 MRD CAP 0822 35 C146 M5 TC3179 4p Capacitor 16V 0 25p COG 0402 P0 M5 TC3179 MRD CAP 0822 37 C147 M5 TC3180 7p Capacitor 16V 0 5p COG 0402 P0 M5 TC3180 MRD CAP 0822 38 C148 M5 TC2044 33p Capacitor 50V 5 COG 0402 P0 M5 TC2044 MRD CAP 0805 19 C149 M5 TC2835 10n Capacitor 16V 10 X7R...

Page 159: ...2044 33p Capacitor 50V 5 COG 0402 P0 M5 TC2044 MRD CAP 0805 19 C181 M5 TC3180 7p Capacitor 16V 0 5p COG 0402 P0 M5 TC3180 MRD CAP 0822 38 C188 M5 TC3180 7p Capacitor 16V 0 5p COG 0402 P0 M5 TC3180 MRD CAP 0822 38 C188 M5 TC3180 7p Capacitor 16V 0 5p COG 0402 P0 M5 TC3180 MRD CAP 0822 38 C189 M5 TC1156 100p Capacitor 16V 5 COG 0402 P0 M5 TC1156 MRD CAP 0822 25 C193 M5 TC2835 10n Capacitor 16V 10 X7...

Page 160: ...5 TC2823 1n Capacitor 16V 10 X7R 0402 P0 M5 TC2823 MRD CAP 0837 13 C224 M5 TC2044 33p Capacitor 50V 5 COG 0402 P0 M5 TC2044 MRD CAP 0805 19 C225 M5 TC2823 1n Capacitor 16V 10 X7R 0402 P0 M5 TC2823 MRD CAP 0837 13 C226 M5 TC3180 7p Capacitor 16V 0 5p COG 0402 P0 M5 TC3180 MRD CAP 0822 38 C227 M5 TC2044 33p Capacitor 50V 5 COG 0402 P0 M5 TC2044 MRD CAP 0805 19 C228 M5 TC2040 10p Capacitor 50V 5 COG ...

Page 161: ... TC2823 1n Capacitor 16V 10 X7R 0402 P0 M5 TC2823 MRD CAP 0837 13 C255 M5 TC1148 22p Capacitor 16V 5 COG 0402 P0 M5 TC1148 MRD CAP 0822 17 C300 M5 TC2835 10n Capacitor 16V 10 X7R 0402 P0 M5 TC2835 MRD CAP 0837 25 C301 M5 TC1148 22p Capacitor 16V 5 COG 0402 P0 M5 TC1148 MRD CAP 0822 17 C302 M5 TC1148 22p Capacitor 16V 5 COG 0402 P0 M5 TC1148 MRD CAP 0822 17 C303 M5 TC1148 22p Capacitor 16V 5 COG 04...

Page 162: ...1 3p Capacitor 16V 5 COG 0402 P0 M5 TC3181 MRD CAP 0822 39 C333 M5 TC2044 33p Capacitor 50V 5 COG 0402 P0 M5 TC2044 MRD CAP 0805 19 C335 M5 TC2044 33p Capacitor 50V 5 COG 0402 P0 M5 TC2044 MRD CAP 0805 19 C336 M5 TC2044 33p Capacitor 50V 5 COG 0402 P0 M5 TC2044 MRD CAP 0805 19 C337 M5 TC2044 33p Capacitor 50V 5 COG 0402 P0 M5 TC2044 MRD CAP 0805 19 C338 M5 TC2044 33p Capacitor 50V 5 COG 0402 P0 M5...

Page 163: ...5p COG 0402 P0 M5 TC3177 MRD CAP 0822 35 C407 M5 TC2044 33p Capacitor 50V 5 COG 0402 P0 M5 TC2044 MRD CAP 0805 19 C409 M5 TC2040 10p Capacitor 50V 5 COG 0402 P0 M5 TC2040 MRD CAP 0805 13 C410 M5 TC2040 10p Capacitor 50V 5 COG 0402 P0 M5 TC2040 MRD CAP 0805 13 C411 M5 TC1156 100p Capacitor 16V 5 COG 0402 P0 M5 TC1156 MRD CAP 0822 25 C412 M5 TC2044 33p Capacitor 50V 5 COG 0402 P0 M5 TC2044 MRD CAP 0...

Page 164: ...003 PF0414B PCN PA 3 6V Selected Part P0 M5 TQ0003 MRD UAN 0040 02 IC108 M5 TQ0442 TS951 Rail Rail Single Op Amp Low Power P0 M5 TQ0442 MRD UAN 0051 01 IC109 M5 TQ0442 TS951 Rail Rail Single Op Amp Low Power P0 M5 TQ0442 MRD UAN 0051 01 IC201 M5 TY0429 LMX2331A Dual Frequency Synth 2GHz 510MHz P0 M5 TY0429 MRD UAN 0039 01 IC202 M5 TQ0443 MQE901 1195 VCO GSM 1160 1230MHz P0 M5 TQ0443 MRD VCO 0002 0...

Page 165: ...Inductor 5 High Q Multilayer 0603 P0 M5 TL0011 MRD LLF 0095 16 L124 M5 TL0500 68nH Inductor 5 High Q Multilayer 0603 P0 M5 TL0500 MRD LLF 0095 22 L125 M5 TL0009 82nH Inductor 5 High Q Multilayer 0603 P0 M5 TL0009 MRD LLF 0095 23 L126 M5 TL0500 68nH Inductor 5 High Q Multilayer 0603 P0 M5 TL0500 MRD LLF 0095 22 L127 M5 TL0485 3nH9 Inductor 0n3 High Q Multilayer 0603 P0 M5 TL0485 MRD LLF 0097 07 L12...

Page 166: ... MRD LLF 0095 11 L401 M5 TL0009 82nH Inductor 5 High Q Multilayer 0603 P0 M5 TL0009 MRD LLF 0095 23 L402 M5 TL0511 56nH Inductor 5 High Q Multilayer 0603 P0 M5 TL0511 MRD LLF 0075 21 L403 M5 TL0007 8nH2 Inductor 5 High Q Multilayer 0603 P0 M5 TL0007 MRD LLF 0095 11 L404 M5 TL0485 3nH9 Inductor 0n3 High Q Multilayer 0603 P0 M5 TL0485 MRD LLF 0097 07 L406 M5 TL0005 8nH2 Inductor 5 High Q Multilayer ...

Page 167: ...5 74 R125 M5 TR1430 270R Resistor 1 16W 1 0402 P0 M5 TR1430 MRD RES 0105 45 R126 M5 TR0659 15R Resistor 1 16W 1 0402 P0 M5 TR0659 MRD RES 0092 18 R127 M5 TR1430 270R Resistor 1 16W 1 0402 P0 M5 TR1430 MRD RES 0105 45 R129 M5 TR1414 33R Resistor 1 16W 1 0402 P0 M5 TR1414 MRD RES 0105 29 R130 M5 TR1455 4k7 Resistor 1 16W 1 0402 P0 M5 TR1455 MRD RES 0105 70 R131 M5 TR0930 10k Resistor 1 16W 1 0402 P0...

Page 168: ...095 05 R201 M5 TR1436 470R Resistor 1 16W 1 0402 P0 M5 TR1436 MRD RES 0105 51 R202 M5 TR1450 3k Resistor 1 16W 1 0402 P0 M5 TR1450 MRD RES 0105 65 R203 M5 TR0930 10k Resistor 1 16W 1 0402 P0 M5 TR0930 MRD RES 0095 01 R204 M5 TR0930 10k Resistor 1 16W 1 0402 P0 M5 TR0930 MRD RES 0095 01 R205 M5 TR1462 12k Resistor 1 16W 1 0402 P0 M5 TR1462 MRD RES 0105 77 R206 M5 TR0930 10k Resistor 1 16W 1 0402 P0...

Page 169: ...R1432 MRD RES 0105 47 R401 M5 TR1432 330R Resistor 1 16W 1 0402 P0 M5 TR1432 MRD RES 0105 47 R402 M5 TR1432 330R Resistor 1 16W 1 0402 P0 M5 TR1432 MRD RES 0105 47 R403 M5 TR1432 330R Resistor 1 16W 1 0402 P0 M5 TR1432 MRD RES 0105 47 R404 M5 TR1026 100k Resistor 1 16W 1 0402 P0 M5 TR1026 MRD RES 0096 01 R405 M5 TR0451 0R Resistor zero ohm link 0805 P0 M5 TR0451 MRD RES 0022 04 R406 M5 TR1026 100k...

Page 170: ...P0 M5 TV0454 MRD QBL 0029 01 TR202 M5 TV0454 2SJ204 P Channel Mosfet with Diode 200mW P0 M5 TV0454 MRD QBL 0029 01 TR203 M5 TV0454 2SJ204 P Channel Mosfet with Diode 200mW P0 M5 TV0454 MRD QBL 0029 01 TR204 M5 TV0529 2SC4180 T1D18 High Gain NPN Transistor 150mW P0 M5 TV0529 MRD QBL 0057 02 TR205 M5 TV0517 MRF1047T Planar NPN Transistor P0 M5 TV0517 MRD QBL 0062 01 TR300 M5 TV0518 BFP405 NPN RF Tra...

Page 171: ... Previous Section Next Section Main Menu Section 8 Circuit Diagrams and Board Maps Part 1 Baseband Circuit Diagrams Part 2 RF Circuit Diagrams Part 3 Baseband Board Maps Part 4 RF Board Maps ...

Page 172: ......

Page 173: ......

Page 174: ......

Page 175: ......

Page 176: ......

Page 177: ......

Page 178: ......

Page 179: ......

Page 180: ......

Page 181: ......

Page 182: ......

Page 183: ......

Page 184: ......

Page 185: ......

Page 186: ......

Page 187: ......

Page 188: ......

Page 189: ......

Page 190: ... Previous Section Next Section Main Menu Glossary of Terms ...

Page 191: ...ere Alternating Current Analogue to Digital Converter Adjust Adjustment Audio Frequency Automatic Frequency Control Automatic Gain Control Access Grant Channel Ampere Hour Area Identification Number Automatic Level Control Alarm Arithmetic and Logic Unit Amplitude Modulation Amplifier Antenna Automatic Repeat Request American Standard Code for Information Interchange Assembly Attenuator Attenuatio...

Page 192: ...roller Central Processing Unit Cyclic Redundancy Coding Conversion Signal Processor D D DA D A DA D A dB dB dBm dBm DC dc DC dc DEMOD DEMOD DET DET DEV DEV DG DG DISC DISC DIST DIST DIV DIV DP DP DSP DSP DTMF DTMF DTX DTX DUP DUP Digital to Analogue Converter Decibels Decibels relative to 1mW Direct Current Demodulator Detector Deviation Differential Gain Discriminator Distortion Divide Differenti...

Page 193: ... GND GP GP GSM GSM Gaussian Minimum Shift Keying Ground Guard Period Global System for Mobile Communications H H H H HF HF HHP HHP HLR HLR Hz Hz Height Henry Hands Free High Frequency Hand Held Portable Home Location Register Hertz I I I I I F I F I O I O IC IC ID ID IF IF IMEI IMEI IMSI IMSI INIT INIT INT INT ISDN ISDN In Phase signal Interface Input Output Integrated circuit Identity Intermediat...

Page 194: ...ntre Minimum Shift Keying Mobile Subscriber set Multiplexer N N NC NC NG NG NiCd NiCd No Connection No Good Nickel Cadmium O O Op Amp Op Amp OPT OPT OSC OSC Operational Amplifier Option Oscillate Oscillator P P PA PA PCB PCB PCH PCH PCM PCM PCN PCN PLL PLL PM PM PROM PROM PS PS PSK PSK PSTN PSTN PWB PWB PWR PWR Power Amplifier Printed Circuit Board Paging Channel Pulse Code Modulation Personal Com...

Page 195: ...cy RX level as defined in GSM specifications RX Quality as defined in GSM specifications S S S N S N SACCH SACCH SAW SAW SCH SCH SCL SCL SDA SDA SDCCH SDCCH SENS SENS SERCK SERCK SERDA SERDA SERLT SERLT SIG SIG SIM SIM SPK SPK STD STD STO STO SYNC SYNC SYNTH SYNTH Signal to Noise Ratio Slow Associated Control Channel Surface Acoustic Wave Synchronisation Channel Serial Clock Serial Data Stand Alon...

Page 196: ... Test Point Transistor Transmitter and Receiver Transmit Transmitter Transmit Audio Frequency U U m m mF mF UHF UHF mP mP Micro Micro Farad Ultra High Frequency Microprocessor V V V V VCO VCO VLR VLR VOL VOL Volts Voltage Controlled Oscillator Visitor Location Register Volume W W W W Watts Width X X XTAL XTAL XTL XTL Crystal Crystal Symbols Symbols Less than Greater than Pin number number ...

Page 197: ...Tel 33 1 4649 4649 NEC Iberica SA Miniparc 1 Edificio A Calle Azalea 1 28109 El Soto de La Moraleja Alcobendas Madrid Espana Tel 37 91 650 1313 NEC Italia SRL Viale Leonardo Da Vinci 97 Trezzano Sul Naviglio Milano Italia Tel 39 02 484 151 NEC Scandinavia AB Karlsbodavagen 20 Box 20057 161 20 Bromma Sweden Tel 46 8 635 9200 NEC UK NEC House 1 Victoria Road London W3 6BL Tel 44 0 181 993 8111 ...

Page 198: ...in between the page up and page down buttons returns you to the beginning of the particular section that you are in at the time Alternatively the manual can be read by using the bookmarks to select the various section and subsection headings See the Acrobat Reader Help for more information on displaying and using bookmarks The first page of each section also contains links to the next section from...

Page 199: ...on 1 1 27th January 1999 NEC Technologies UK Ltd This Document is the property of NEC Technologies UK Ltd It must not be reproduced in whole or in part or otherwise disclosed without prior consent in writing from NEC Technologies UK Ltd Exit ...

Search results

Summary of Contents for DB2000

Reviews:

Related manuals for DB2000

Brands by name

Popular brands

NEC DB2000, Service Manual

Search results

Summary of Contents for DB2000

Reviews:

Related manuals for DB2000

Brands by name

Popular brands