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Motorola TimePort P7389i Product Manual Download Page 13

Motorola Internal Use 

          13

P7389i – Circuit Description

are present, but colder than –15 deg C and no card is inserted then the output of the

comparator Q905

 will stay high and the unit will display ‘Insert Card’. Once the

battery temperature goes above that (

BATT_THERM

 Voltage approximately 2.51V)

but the SIM card is either not inserted or faulty ‘CHECK CARD ‘ will be displayed.
The reason behind this is to prevent the extra cost of a mechanical SIM presence
detect switch and to prevent the SIM card being removed whilst connected to Aux
Power.

Logic: Charger Circuit

As mentioned already the P3689 is not compatible with the mid rate charger. The
charging path therefore, is as the Kramer circuitry.
After the charger has been connected 

MAN_TEST _AD

 will be read, to decide on type

of charger and therefore charging profile to be used.

EXT_B+

 from 

J600

 

Pin 14

 is passed through current sense resistor 

R913

 this is used as

feedback for charging current rate and input current transient protection.
Charging current control is maintained by 

CHRGC

 (

GCAP II

 

Pin E8

). It is this ‘drive’

that opens or closes the charging gate within 

Q900 Charging FET

. The drive is set during

phasing.
The charge is then fed through 

Q900

 to 

BATT+

Logic: Deep Sleep Mode

Deep sleep mode is there to provide a facility to save battery life by intermittently
shutting off part of the PCB. This is achieved in the following way. The signal

STBY_DL

 is generated from Whitecap 

Pin F1

, through a standby delay circuit

CR912

 and 

U906

. The logic gate 

U906

 and diode 

CR912

 are used to provide a

short delay between the time of activation of the 

STBY_PC5

 

signal and to the

STBY_DL

 signal. This is a hardware patch for timing issues related to the

Whitecap's Deep Sleep Module (DSM). The resultant signal is then passed onto

Q834

 and 

Q912. 

This has the effect respectively of:

1)

 

Grounding 

VREF

 which makes MAGIC DM inoperable

2)

 

Grounding 

V2

 This switches off MAGIC DM, Front END IC and inhibits the

Transmit path through 

RF_V2

3)

 

The shutdown is only for a fraction of a second and during that time the GCAP Clock
supports the logic side of the unit. The GCAP clock is generated by 

Y900

, which

generates a 32.768MHz clock. This clock is output from Whitecap 

Pin C7

 and fed

directly to Whitecap 

Pin P4

. The clock is always monitored by Whitecap and should

it fail, the unit will no longer go into deep sleep mode.

Logic: Keypad Operation

1)

 

The keypad works as a matrix supported V2. The signals inform the Whitecap upon a
key press by dropping the signal ‘low’. Below is the Key Matrix.

KBR0

KBR1

KBR2

KBR3

KBR4

KBC0

KBC1

KBC2

KBC3

KBC4

GND

Summary of Contents for TimePort P7389i

Page 1: ...Level 3 Product Guide P7389i Level 3 Circuit Description 25 07 00 V1 0 ...

Page 2: ...is high then the received signal will be passed to the band pass filter FL400 GSM900received frequency will be filtered through Note RX275_GSM_PCS also selects the PCS 1900 frequency passed through FL2400 The DCS 1800 frequency is selected by RX275_DCS Q110 and passed through FL1400 4 For the PCS 1900 and DCS 1800 frequencies the signal is then fed onto the DCS PCS Select switch U400 The signal RV...

Page 3: ... be the difference signal OF 400Mhz that is now fed to the SAW Filter FL457 Surface Acoustic Wave this filter is the same as was used in previous 400MHz products The purpose of the SAW filter is to provide comprehensive removal of harmonics created during the mixing process 11 The IF signal fed to the SAW filter will be 400Mhz The reason for the change to 400Mhz from 215Mhz is to limit the span of...

Page 4: ...0 I bits 6 zeros SDFS pulse 10 Q bits 6 zeros 16 idle bit times 18 The new SPS ROM 6 Whitecap U800 receives these signals on Pins A3 D4 and B4 within the Whitecap the signal is digitally processed Baud rate reduced Error correction bits removed deciphered and de interleaved 19 The digital signal is now being fed down the DIG_AUD_SPI bus to the GCAP II U900 internally to the GCAP the digital signal...

Page 5: ...nsferred to the MAGIC DM DM U200 along a TX SPI bus The bus is made up of BCLKX Base band Clock Transmit Pin B3 and BDX Base band Data Transmit Pin B6 The timing for this data is already decided for the transmission burst and therefore a frame synch is not required 6 The SPI comes into the MAGIC DM at Pin G7 BCLKX and Pin J2 BDX 7 The operation of the MAGIC DM is very complex and with respect to t...

Page 6: ...comprises mainly of U360 Q360 Q361 and C367 and it s main function is to smooth out any overshoots when the channel is changed see Fig 11 1 If this overshoot were fed to the TX VCO the resulting burst would not meet the world standards for GSM with respect to bandwidth see Fig 11 2 12 The Loop filter basically acts then as a huge capacitor and resistor to give a long CR time for smoothing It uses ...

Page 7: ...supported by the voltage PA B DM_CS B through Q380 17 PA matching is provided using the signals TX_GSM TX275 GSM_SEL through Q1101 and TX_DCS TX275 DCS_SEL through Q1101 to switch on or off the diodes CR300 through CR306 to match the PA between GSM and DCS PCS using the inductive strips on the PCB 18 The amplified signal is then fed back to the RF switch U150 as discussed in Receive then either tr...

Page 8: ...ases enough to cause the detector to rise a few millivolts then this output will go low In the GSM radio a resistor is routed between this point and the AOC input to cause the radio to ramp up the power until the detector goes active Logic Power Up sequence 1 Three power sources available battery External Power via Charger Battery must be present to power up 2 Battery Power Source The L7389i uses ...

Page 9: ...sic operation V1 supplies the DSC bus drivers negative voltage regulators and MAGIC DM V1 is created from GCAP II Pin A6 and can be measured on C906 The basic circuit operation for the Boost circuit is as follows the LX signal GCAP II Pin B10 allows a path for B to charge the capacitor when the switch is on the capacitor then discharges through the inductor switch off setting up an electric field ...

Page 10: ...sed for RF GSM DCS selection signals through Q160 Both voltages produced by V1 through U903 and U904 SR_VCC Power Cut Circuit Used to buffer the SRAM U702 voltage with a built in soft reset within the unit s software The reason for this is to protect the user from any accidental loss of power up to 0 5 seconds i e If the unit is knocked causing a slight battery contact bounce the SR_VCC will to th...

Page 11: ...l internally be divided by 2 to give our external 13MHz clock This is then fed out of the MAGIC DM on Pin J6 MAGIC DM_13MHz and distributed to Whitecap Pin H10 CLKIN then from Whitecap Pin B7 to GCAP II Pin F5 as GCAP_CLK At the same time the 13MHz Varactor Diode CR248 is producing an output This output is controlled in the following way The 26MHz from Y200 is divided down to 200 kHz and fed to a ...

Page 12: ...ls are Reset Whitecap Pin E9 RST0 in to GCAP II Pin K7 LS1_IN_TG1A This signal is then level shifted to the required voltage and fed out to SIM Contacts J803 Pin 4 from Pin J7 LS1_OUT_TG1A Clock This is a 3 25MHz signal from Whitecap Pin E9 CLK0 Pin E7 to GCAP II Pin G6 LS2_IN This signal is then level shifted to the required voltage and fed out to SIM Contacts J803 Pin 6 from Pin F6 LS2_OUT SIM I...

Page 13: ...d through Q900 to BATT Logic Deep Sleep Mode Deep sleep mode is there to provide a facility to save battery life by intermittently shutting off part of the PCB This is achieved in the following way The signal STBY_DL is generated from Whitecap Pin F1 through a standby delay circuit CR912 and U906 The logic gate U906 and diode CR912 are used to provide a short delay between the time of activation o...

Page 14: ...eric contact The LCD is controlled by CS1 Chip Select which originates from DP_EN_L Whitecap Pin A11 to J902 Pin 1 RES which originates from RESET Whitecap Pin P2 to J902 Pin 2 R W which originates from R_W Whitecap Pin P2 to J902 Pin 4 7 Data Lines from Whitecap DO D7 The display is supported by V2 and 10V originating from U904 and can be measured on C965 Also the data command signal AO from Whit...

Page 15: ...cher is integrated to allow compatibility between the received signal and Whitecap 5 The module is supported by V2 Logic Vibrator 1 The vibrator contacts are now situated on the topside of the smart card PCB 2 The vibrator is controlled by the signal VIB_EN Whitecap Pin K1 and B through U501 3 U501 connects to the vibrator pads through Connector J5006 Pins 2 and 4 Vibrator pads ...

Page 16: ...MHz 1805 1990MHz FILTERED_ 5V DCS_SEL 13MHz VCO Tri Band GPRS Leap CR248 PHASE DET 13MHz Divider 200KHz GSM SERVICE SUPPORT GROUP 18 07 00 LEVEL 3 AL Block Diagram Rev 1 0 Tri Band GPRS Leap Michael Hansen Ray Collins Ralf Lorenzen Page 1 Pin2 FL2400 5 1 3 5 U400 1930 1990MHz RVCO_DCS RVCO_PCS 6 4 RX275_GSM STEP ATT DEMODULATION SPI RX F7 G9 G8 RXI RXQ J6 MUX G6 PA CONTROL A9 D9 PLL SWITCH H7 C8 C...

Page 17: ...LOCK Y900 A7 B7 32 768 KHz SPR SPR ALRTOUT ALRT_VCC REG V2 REG V3 REG VBOOST1 REG L901 B V_BOOST1 V1 V2 V3 VREF REG VREF 2 775V for WhiteCap logic outputs RAM FLASH EEPROM 1 8V for WhiteCap VSIM REG VSIM1 V1 5 0V for DSC Bus Negative Voltage Regulator Internal GCap use only VSIM1 LS_V1 3 0 or 5 0V for SIM Card Circuit PA_DRV RESET 2 775V for Magic K6 E18 B10 J5 C6 B5 G9 A6 A10 C10 C7 BATT EXT_B 14...

Page 18: ...SH7 GPRS LEAP_8485776K10_P10 1 GSM SERVICE SUPPORT GROUP 22 06 00 Level 3 Layout Rev 1 0 GPRS LEAP 8485776k10_ P10 1 Michael Hansen Ralf Lorenzen Ray Collins Page 1 of 2 REVISIONS J902 SH6 SH5 SH4 ...

Page 19: ...GSM SERVICE SUPPORT GROUP 22 06 00 Level 3 Layout Rev 1 0 GPRS LEAP 8485776k10_ P10 1 Michael Hansen Ralf Lorenzen Ray Collins Page 1 of 2 REVISIONS GPRS LEAP_8485776K10_P10 1 SH1 SH2 SH3 SH8 ...

Page 20: ...d at correct level for the right value compare them with a good pcb Does key pad works ok Go to NO KEYPAD pag 23 NO YES YES Does radio power up and stay on using battery If the radio power up only from EXT conn Supply GO TO NO POWER UP BATTERY on pag 20 otherwise GO TO NO POWER UP on pag 13 NO Does PCB draw current when is off Go to DRAW CURRENT WHEN IT IS OFF on pag 20 YES NO START A on pg 2 YES ...

Page 21: ...NCY ERROR pag 21 A B on pg 2 Is TX audio ok on internal microphone Go to NO AUDIO TX int microphone pag 23 T260 TEST SEQUENCE Is RX audio ok on internal loudspeaker Go to NO AUDIO RX int loudspeaker pag 15 Insert Headset YES NO NO NO NO NO NO YES YES YES YES YES YES All signals voltages present in this procedure has to be clear and at correct level for the right value compare them with a good pcb ...

Page 22: ...io ok on headset Does LED service works ok Go to NO LED SERVICE pag 19 Does Real time clock works ok Go to NO REAL TIME CLOCK pag 19 G o to NO CHARGER pag 22 Go to NO MICROPHONE HEADSET pag 17 B T260 TEST SEQUENCE Does INFRARED Computer connection work correctly G o to NO IrDA pag 19 NO NO NO NO NO NO YES YES YES YES YES YES YES All signals voltages present in this procedure has to be clear and at...

Page 23: ... there the correct signal 400Mhz on C460 Check for intermittent problem Check the presence of RX275 on pin1 of Q450 and the RX275_GSM about 1 2 Volt on L450 If NOT OK go to P on pg 6 If OK check Q450 NOTE1 or Faulty Is there 400Mhz on C460 Check Q450 U150 and U151 NOTE1 or Faulty Is correct the 400Mhz on C480 Is correct the 400Mhz on C481 Check FL457 Check Q480 NOTE1 or Faulty Check Q201 Q202 U200...

Page 24: ...aren t not phisically damaged Is there the correct signal 400Mhz on C460 Check the presence of RX275 on pin 3 of Q450 and the RX_275_DPCS on L2450 about 1 2 Volt If NOT OK GO TO P on pg 6 If OK check Q450 NOTE1 or Faulty Check for intermittent problem NO NO NO NO NO YES YES YES YES YES Is there the correct signal on C2452 Check FL1401 NOTE1 or Faulty YES NO Are correct the RVCO_PCS and RVCO_DCS on...

Page 25: ... OK Check U900 NOTE1 or Faulty If OK Check Q202 and U200 NOTE1 or Faulty Is present the RX275 on pin2 of Q112 Check Q112 NOTE1 or Faulty Are present RX275_GSM and RX275_DCS on pin 4 and 6 of Q110 Check the presence of GSM_SEL and DCS_SEL on pins 1 and 3 of Q110 If NOT OK Check U200 NOTE1 or Faulty If OK Check Q110 NOTE1 or Faulty Is present RX275_GSM_PCS on pin2 of Q2101 Check Q2101 NOTE1 or Fault...

Page 26: ... OK check also U800 NOTE1 or Faulty NOTE1 check if any components mentioned are correctly positioned have not dry joint and aren t not phisically damaged NO NO YES YES YES For most of Signals Use a Test PCB as reference these signals must change their value depend on chanel selected NO Check U400 measuring the resistance between pin 4 and pin 6 of U400 to Ground remove power supply If they are OK ...

Page 27: ...L350 U200 Pin 5 TX275_DPCS present if select DCS PCS chanel If NOT OK GO TO H on pg 11 Pin 3 TX275_GSM present if select GSM chanel If NOT OK GO TO H on pg 11 Pin 2 TX_DCS present if select DCS PCS chanel If NOT OK GO TO I on pg 12 If All are OK check U350 U200 NOTE1 or Faulty NOTE1 check if any components mentioned are correctly positioned have not dry joint and aren t not phisically damaged NO N...

Page 28: ... U904 NOTE1 or Faulty If OK check Q370 NOTE1 or Faulty Check U390 and U200 NOTE1 or Faulty Check Q370 1 2 3 NOTE1 or Faulty Check the correct DM_CS signal on Q381 If NOT OK check U800 NOTE1 or Faulty Is correct the control signal on pin 4 of Q380 Replace Q381 Check the presence of PA_B signal on pin 5 and 8 of Q380 If NOT OK replace Q380 NOTE1 check if any components mentioned are correctly positi...

Page 29: ...he Bias of Q331 B from R337 The gate control from U390 If NOT OK check U390 and U200 NOTE1 or Faulty Is correct the signal on pin 1 of U150 Check U150 U151 and relative control signal NOTE1 or Faulty Check the Bias of U300 Pin 2 and 8 the Negative control from gate control If NOT OK go to N on pg 9 Pin 10 to 15 the PA_B signal If NOT OK go to O on pg 9 If All are OK check U300 CR301 2 3 5 NOTE1 or...

Page 30: ...NOT OK check U900 NOTE1 or Faulty Is present and correct the TX275 voltage on C1125 Check Q120 NOTE1 or Faulty Is present the SFOUT voltage on pin 4 of Q121 Check U200 NOTE1 or Faulty Is present the correct signal on C1126 close Q2120 Check Q121 NOTE1 or Faulty Is present the correct signal on pin 1 of Q2120 Check U200 NOTE1 or Faulty Check Q2120 NOTE1 or Faulty NOTE1 check if any components menti...

Page 31: ...1 or Faulty L Are present on pins 3 and 1 of Q1100 the PCS_SEL and DCS_SEL from Magic IC Check U200 and Q100 NOTE1 or Faulty Is there the 5 Volt on R103 Check U903 4 NOTE1 or Faulty Are there RVCO_PCS and RVCO_DCS on pin 4 and 6 of Q1100 Check for intermittent problem Check Q1100 NOTE1 or Faulty NOTE1 check if any components mentioned are correctly positioned have not dry joint and aren t not phis...

Page 32: ...ages check for any short to ground else check U900 NOTE1 or faulty Is the Main frequency of Y200 on R244 close U200 present and correct 26 MHz Is the Frequency 13Mhz present and correct on R238 close U200 Check the following Bias RF_V1 on Q201 2 7 V C217 RF_V2 on Q202 2 7 V C215 If NOT OK Check the correct voltage on C213 VREF from U900 than the rispective FET and U200 to solve the Fault If OK Che...

Page 33: ...is an intermittent problem then sent to HTC Check U701 Then U800 NOTE1 or faulty Check U900 Pull Up resistor and relative capacitors NOTE1 or faulty Check U800 NOTE1 or Faulty Check U702 Then U800 NOTE1 or faulty YES NO YES NO YES NO YES A T260 NO POWER UP NO NOTE1 check if any components mentioned are correctly positioned have not dry joint and aren t not phisically damaged Is present and correct...

Page 34: ...Loudspeaker terminals C969 etc NOTE1 or Faulty Check for intermittent problem It is only internal Loudsp problem It is only Ringer problem Is present on Pins 5 6 of Q903 about 3V Insert the correct Software and Flex File then make reset 572 If still NOT Work correctly continue Check the presence of B on Pin4 of Q903 If OK check Q903 VR900 1 NOTE1 or Faulty YES YES YES NO NO NO Is present on Pin AL...

Page 35: ...t terminal the 1Khz about 0 5Volt P P Check J504 C511 C951 C952 R961 NOTE1 or Faulty Without Headset Is present on R977 close U800 2 7Volt Check J504 NOTE1 or Faulty Check U800 NOTE1 or Faulty Insert the Headset Is now the voltage about 0 5Volt Check J504 R976 VR902 C943 C944 If OK Check U800 NOTE1 NO NO YES YES NO YES NOTE1 check if any components mentioned are correctly positioned have not dry j...

Page 36: ...504 about 1Volt Check J504 L500 and relative components NOTE1 or Faulty Without Headset Is present on R977 close U800 2 7Volt Check J504 NOTE1 or Faulty Check U900 and U800 NOTE1 or Faulty Insert the Headset Is now the voltage about 0 5Volt Check J504 R976 VR902 YES NO NO NO NO YES YES YES NOTE1 check if any components mentioned are correctly positioned have not dry joint and aren t not phisically...

Page 37: ...contrast problem Check capacitors from C702 to C706 and C722 Are present the negative 10Volt on C710 Check U800 NOTE1 or Faulty Check the presence of V1 on pin 2 of U903 from GcapII if OK Check U903 U904 and relative components NOTE1 or Faulty START NO YES NOTE1 check if any components mentioned are correctly positioned have not dry joint and aren t not phisically damaged Insert the correct Softwa...

Page 38: ...Software and Flex File then make reset 572 If still NO Real Time Cloock following the procedure Check the presence of 32 768 Mhz on Y900 If NOT OK check Y900 and U900 NOTE1 or faulty Check the RTC Battery Voltage If it is below of 2 4 Volt replace RTC Battery and check U900 and J905 Connector NOTE1 or Faulty T260 NO REAL TIME CLOCK NOTE1 check if any components mentioned are correctly positioned h...

Page 39: ...d PCB B on C915 V_BOOST1 on C913 V_REF on C919 V1 on C906 V2 on C939 V3 on C910 VSIM1 on C905 If you found some difference Check the components which use that Voltage If you don t found any difference send PCB to HTC T260 NO POWER UP USING BATTERY T260 DRAW CURRENT WHEN IT IS OFF Check for intermittent faulty then in sequence U800 U900 NOTE1 or faulty For VSIM1 problem Check U900 NOTE1 or faulty F...

Page 40: ...and the correct value of VREF on C919 from U900 RF_V1 on C217 from Q201 RF_V2 on C215 from Q202 Check U200 NOTE1 or Faulty NOTE1 check if any components mentioned are correctly positioned have not dry joint and aren t not phisically damaged YES NO For most of Signals Use a Test PCB as reference NO YES Is there noise on C225 13Mhz Check CR248 relative components and U200 NOTE1 or Faulty Is correct ...

Page 41: ... of U905 with battery it must be 0Volt Check U905 and Q908 NOTE1 or Faulty Check U800 NOTE1 or Faulty Put the phone in test mode and digit 500255 Is there on pin3 of Q900 about EXT_B voltage Check R913 Is there 0Volt on pin4 of Q900 Check U900 NOTE1 or Faulty Is there about EXT_B voltage on pin4 of J604 Check Q900 NOTE1 or Faulty and J604 NOTE1 Check Q900 NOTE1 or Faulty NO NO NO NO NO NO YES YES ...

Page 42: ...are correctly positioned have not dry joint and aren t not phisically damaged Insert the correct Software and Flex File then make reset 572 If it still NOT Work correctly Check U800 NOTE1 or Faulty and U701 NOTE1 T260 NO VOICE FEATURES T260 NO MICROPHONE INTERNAL HEADSET OK Check J900 Mic_Conn U900 and relative components NOTE1 or Faulty T260 NO VIBRACALL Put the phone in Test mode and digit 1590 ...

Page 43: ...GPRS Tri Band T260 Level 3 procedure Rev 1 mercoledì gennaio 24 2001 MOTOROLA Level3 Authorized ...

Page 44: ...GPRS LEAP_8485776K10_P10 1 GSM SERVICE SUPPORT GROUP 22 06 00 Level 3 Connector Schematics Rev 1 0 GPRS LEAP 8485776k10_ P10 1 Michael Hansen Ralf Lorenzen Ray Collins Page 1 of 1 REVISIONS ...

Page 45: ... Negative Supply for LCD V2 V1 V5 V4 V3 IRS VR V2 V2 V5 V5 CAP 2 CAP 2 CAP 1 CAP 1 CAP 3 VOUT VSS 10V V2 DATA 15 0 R_W AO RESET DP_EN_L Leap GPRS Display Connector GSM SERVICE SUPPORT GROUP 03 07 00 Level 3 Display Connector Schematics Rev 1 0 GPRS LEAP 8485776k10_ P10 1 Michael Hansen Ralf Lorenzen Ray Collins Page 1 of 1 REVISIONS ...

Page 46: ...CP A9 LO2_CP D9 LO2_EMIT SIM CONN RX_VCO_IC RVCO_PCS RX275_GSM RVCO_DCS RX275 RX275_DPCS RVCO_275 RVCO_PCS RVCO_DCS V1_SW SF_OUT RF_V2 TX275_DPCS TX_EN SF_OUT V1 WATCHDOG V3 RX275_GSM_PCS RX275_DCS TX275 TX275_GSM TX275_DPCS PA_B TX275_GSM 10V 5V V1 B VSIM1 STBY_DL V2 V_BOOST1 VREF J600 EXT CONN 1 GND 2 SW_RF 3 GND 4 BATT_FDBK 5 MAN_TEST 6 RS232_TX 7 RS232_RX 8 RS232_EN 9 ON OFF 10 GND 11 UPLINK 1...

Page 47: ...TX VCO SIGNAL FILTERED PA OUTPUT SIGNAL PA DETECT LINE PA TUNING VOLTAGE PA TUNING VOLTAGE RX LOCAL OSC TUNING VOLTAGE RX LOCAL OSC 800MHz A B C D E F G H I J K L M N SH4 SH7 SH5 SH6 TP836 TP865 TP832 TP205 TP206 TP839 TP868 TP841 TP867 TP869 TP870 TP866 TP862 TP863 TP826 TP817 TP816 TP814 TP815 TP813 TP812 TP811 TP810 TP809 TP210 TP209 TP208 TP204 TP207 TP835 TP825 TP838 TP824 TP822 TP828 TP823 T...

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