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Pantech G510 Service Manual

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G510 Service Manual
G510
G510 Service Manual
(GSM Cellular Phone)
Pantech Co., Ltd., Korea
September 5, 2003
st
1
Edition
For Use by Authorized Service/Maintenance Personal Only
Documents to Receive This Addendum:
G510 Maintenance/Repair/Operating Manual

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  • Page 1 G510 Service Manual G510 G510 Service Manual (GSM Cellular Phone) Pantech Co., Ltd., Korea September 5, 2003 Edition For Use by Authorized Service/Maintenance Personal Only Documents to Receive This Addendum: G510 Maintenance/Repair/Operating Manual...

  • Page 2: Table Of Contents

    G510 Service Manual CONTENTS SECTION 1 INTRODUCTION ......................3 1.1 I ..........................3 NTRODUCTION 1.2 F ...................3 REQUENCY LLOCATION AND 1.3 I ........................4 AME AND 1.4 C ........................4 HARACTERISTICS SECTION 2 ELECTRICAL SPECIFICATIONS..................5 2.1 G ............................5 ENERAL 2.2 T …………………………………………………………………………………………….5 RANSMITTER 2.3 R …………………………………………………………………………………………………5...
  • Page 3 G510 Service Manual 6.2.7 VIBRATOR NOT WORKING …………………………………………………………………...…36 6.3 SIM CARD PART ……………………………………...…………………………………………….37 6.3.1 SIM ………………………………………………………………………………………….37 ERROR 6.4 CHARGER PART……………………………………………………………………………………..38 6.4.1 C ………………………………..…………………………………………………38 HARGING ERROR 6.5 RF PART…………….………………………………………………………………………………… 40 6.5.1 T ………………………………………………………………… …………………40 EST CONDITIONS 6.5.2 P ……………………………………………………………………….41 OWER UPPLY HECK POINT 6.5.3 P...

  • Page 4: Section 1 Introduction

    G510 Service Manual SECTION 1. Introduction 1.1 An Introduction of GSM Digital Cellular Mobile Communication System GSM (Global System for Mobile communication) concluded that digital technology working in the Time Division Multiple Access (TDMA) mode would provide the optimum solution for the future system.

  • Page 5: Item Name And Use

    This product consists of a handset, battery pack, and Travel charger. Characteristics 1) All the active devices of G510 are made of semiconductors to ensure excellent performance and semi-permanent use. 2) Surface mounting device (SMD) is used to ensure high reliability, compactness and lightness.

  • Page 6: Section 2 Electrical Specifications

    G510 Service Manual Section 2. Electrical Specifications 2.1 General E-GSM / PCS Band Mobile Transmit Frequency 880 MHz ~ 915 MHz/1850MHz ~ 1910MHz Mobile Receive Frequency 925 MHz ~ 960 MHz/1930MHz ~ 1990MHz The Number of Time Slot The Number of Channels...

  • Page 7: Section 3 Operation

    G510 Service Manual Section 3 Operation 3.1 Name of each part Antenna Sub LCD Flash LED Camera Speaker& Earpiece Display Screen Navigation Key Camera Key PANTECH R&D CONFIDENTIAL...

  • Page 8: Display

    G510 Service Manual 3.2 Display(Dual LCD) Parameter Projected Actual(MAIN LCD) Display Color TFT LCD with white LED back lighting 262144 colors European Character : (font size : 16×16) 6 lines x 16 characters Chinese Character : (font size : 16×16) 6 lines × 7...

  • Page 9: Section 4 Theory Of Operation

    G510 Service Manual Section 4. Theory of Operation 4.1 Logic Section 4.1.1 DC Distribution and Regulation Part Applying battery voltage and pressing “END” key on the key pad short-circuits “Ground” and “_ PowerON”.ADP3522(U103)control that power manage regarding power on/off in handset Pressing POWERKEY on the key pad is active on the handset.
  • Page 10 G510 Service Manual ☞ Configuration by Function of AD6526 1 Microprocessor Core AD6526 has a built-in ARM7 microprocessor core, including microprocessor interrupt controller, timer/counter, and DMA controller. And besides, 32bit data path is included, and up to 8Mbyte addressing is enabled and can be extended up to 16Mbyte. Although external clock should be provided to operate the microprocessor, this core uses 13MHz VCTCXO to provide clock.

  • Page 11: Memory Part

    G510 Service Manual 1) Transmitter Interface: This transmits TX_AGC signal to Tx AGC amplifier to adjust transmit power level and sends Ramp_DAC signal to the RF part to control power amplifier. 2) Receiver Interface: This transmits RX_AGC signal to Rx AGC amp. to adjust receive path gain.

  • Page 12: Notification Part

    G510 Service Manual 3 Key Tone Generation All alert signals are generated by the DSP and output to the EVBC. These alert can be used for the earpiece. 4.1.4 Notification Part The notification of incoming call is given by melody, vibrator.

  • Page 13: Radio Transceiver Section

    4.2 Radio Transceiver Section Fig.4-1. RF Transceiver block diagram The G510’s RF Transceiver(U710), which is AERO I, consists of the GSM transmitter,the GSM Receiver, and the RF synthesizer. The highly integrated solution eliminates the IF SAW filter, external low noise amplifiers (LNAs) for three bands, transmit and RF voltage controlled oscillator (VCO) modules, and more than 60 other discrete components found in conventional designs.

  • Page 14: Dc Distribution And Regulation Part

    G510 Service Manual Fig.4-2. Top view of RF Transceiver PCB Layout 4.2.1 DC Distribution and Regulation Part The battery voltage, in return, is applied to the logic part and RF part via LDO(Low Drop-Out) regulator. As several LDO regulators are used, power can be supplied for each necessary part efficiently.

  • Page 15: Receive Section

    G510 Service Manual Table 4-1. Pin Description of Si4200DB-BM 4.2.3 Receiver Section 4.2.3.1 An Overview of Receive section Fig.4-6. Receiver block diagram PANTECH R&D CONFIDENTIAL...
  • Page 16 G510 Service Manual G510’s Aero I transceiver uses a low-IF receiver architecture which allows for the on-chip integration of the channel selection filters, eliminating the external RF image reject filters and the IF SAW filter required in conventional superheterodyne architectures. Compared to a...
  • Page 17 G510 Service Manual path isolated from the receiving path. A signal receives from the antenna of frequency band which is 942.5±17.5MHz for EGSM bands, 1960.2±30 MHz for PCS bands and transmits it to dual saw filter. The Tx filter passes through the output signals of frequency band that is 897.5MHz ±17.5MHz for EGSM bands, 1880.2 ±30 MHz for PCS bands from the power amplifier and transmits it to the...

  • Page 18: Transmit Section

    G510 Service Manual Fig.4-7. Receiver part PCB Layout 4.2.4 Transmit Section 4.2.4.1 An Overview of Transmit Section Fig.4-8. Transmitter block diagram The transmit (TX) section consists of an I/Q baseband upconverter, an offset phase-locked loop (OPLL) and two output buffers that can drive external power amplifiers (U701), one for the GSM 850 (824 to 849 MHz) and E-GSM 900 (880 to 915 MHz) bands and one for the PCS 1900 (1850 to 1910 MHz) and PCS 1900 (1850 to 1910 MHz) bands.

  • Page 19: Transmitter Part

    G510 Service Manual modulator and feedback mixer outputs. The cutoff frequency of the filters is programmable. 4.2.4.2 Transmitter Part A. 6 dB attenuator : Z705, Z706 These passive components are adopted for PAM to operate in a stable output power.

  • Page 20: Offset Pll

    G510 Service Manual 4.2.5 Offset PLL 4.2.5.1 An Overview of Offset PLL Fig.4-10. Si4205 Frequency Synthesizer Block Diagram The Aero I transceiver integrates two complete PLLs including VCOs, varactors, resonators, loop filters, reference and VCO dividers, and phase detectors. The RF PLL uses two multiplexed VCOs.

  • Page 21: Vc-Tcxo(Voltage Controlled Temperature Compensated Crystal Oscillator): V801

    G510 Service Manual 4.2.5.2 VC-TCXO(Voltage Controlled Temperature Compensated Crystal Oscillator): V801 This is the mobile station’s reference frequency source. Its frequency is 13MHz, this signal is applied to Si4205(U710)_pin8, AD6526(U101) and ML2870(U105). VCTCXO Fig.4-11. Top view of VCTCXO part on the PCB artwork PANTECH R&D CONFIDENTIAL...

  • Page 22: Section 5 Alignment Procedure

    G510 Service Manual Section 5. Alignment Procedure 5.1 Recommended Test Equipment Model No. Description Maker Remark GSM Mobile Station 8960 Agilent Technologies Test Set 8593E Spectrum Analyzer Hewlett Packard TDS 340A Oscilloscope Tektronix FLUKE 87 Digital Multimeter Fluke E3630A DC Power Supply...

  • Page 23: Section 6 Equipment Repair Procedure

    G510 Service Manual SECTION 6. Equipment Repair Procedure 6.1 No Power On with battery Applied. 6.1.1 Power CHECK 1.Check battery power : 3.5V~4.2V. BATTERY PACK Terminal 2.Check to see if U103.22,19,2 pin voltage is same with battery power : CP100...
  • Page 24 G510 Service Manual 3. Check to see if Q101.7,8 and 9 pin is same with battery power : CP101 CP101 CP101 Check to see if U113 .1 pin is same with battery power : CP102 CP102 PANTECH R&D CONFIDENTIAL...
  • Page 25 G510 Service Manual CP102 5. Check to see if U103. 21,20.23 and 3 pin is 1.8V, 2.8V, 2.55V_A,1.95V_RTC : CP103 CP103 CP103 CP104 6. Check to see if U103.30 pin becomes to 0V : CP104 Pressing “END” key to turn on equipment.
  • Page 26 G510 Service Manual CP104 7. Check to see if C106~109,C111~C114,C100~103 is 2.8V_M, 1.8V_D : CP105 CP105 CP105 PANTECH R&D CONFIDENTIAL...

  • Page 27: Oscillation Check

    G510 Service Manual 8. Check to see if U106.5 pin and J103.28 pin is 2.8V_EXT : CP107 CP107 CP107 6.1.2 Oscillation CHECK 1. Check to see if U101 No. A3 and B3 pin is oscillated(32.768KHz) : CP108 2. NO Check R138 and then replace X101...

  • Page 28: Keypad Led Not In Operation( Blue )

    G510 Service Manual CP108 2. Check to see if U107.4 pin Master Clock(13MHz). : CP109 Check U107 No. 1.2 pin and then check the PCB pattern, soldering CP109 CP109 6.1.3 KEYPAD LED Not in Operation( blue ) 1.Check to see if R129. 1 pin is around 2.8V(duty:80%, 256Hz) : CP110 Check R129 and Q102 and then replace those 2.Check to see if R123.124.125.126.127.128 is same with battery voltage : CP111...
  • Page 29 G510 Service Manual CP110 CP112 CP111 CP111 CP112 PANTECH R&D CONFIDENTIAL...

  • Page 30: Lcd

    G510 Service Manual CP110 6.1.4 LCD Backlight Not in Operation(White) 1. Check to see if J103.13 pin is around 2.8V(duty:80%, 256Hz) : CP113 Check J103 and resoldering CP113 CP113 6.2 Audio Part ( Earpiece, Hands-free Earphone, Microphone, Hands-free Mic ) 6.2.1 No receiving tone heard( Ear-piece )

  • Page 31: N Oreceiving Tone Heard (Earpiece )

    G510 Service Manual 6.2.2 No Receivng tone heard ( Hands-free Earphone ) 1.Check to see if U102 Nos. F10.A9 and J8(C118. C119. C120) is 2.55V_A: CP118 2.Check to see if 102 No. A7(C124) is around 1.2V : CP119 3.Check to see if U101 No. B11(D124) is around 0V: CP123 Check to see J106 : CP124 Set to HP8922M to connect a call and then set to 1Khz.
  • Page 32 G510 Service Manual CP124 CP123 CP120 CP119 CP118 CP123 CP124 PANTECH R&D CONFIDENTIAL...

  • Page 33: Sidetone Not Transmitted (Earpiece )

    G510 Service Manual 6.2.3 Side Tone Not transmitted ( Ear-piece ) Repeat 6-2-1 No receiving tone heard.( Ear-piece ) 1.Check to see if Mic + pin is around 1.8V : CP126 Check that R104,C181 is cold solder,broken,short to the other PCB pattern or not If you find out any defective part, you replace it.

  • Page 34: Hook Switch Not Working

    G510 Service Manual CP129 CP127 CP126` 6.2.5 Hook Switch not working 1.Check to see if U111 No.5 is 2.8V : CP130 2.Check to see if U111 No.1 is 0V during pressing Hook Switch : CP131 3.Check to see if U111 No.3 is around 0.15V : CP132...

  • Page 35: Melody Not Ringing

    G510 Service Manual CP132 CP130 CP133 CP131 CP130 CP131 CP132 CP133 6.2.6 Melody not ringing 1.Check to see if U105.7 , 32 is 2.8V_EXT : CP134 2.Check to see if U105.15 is Vbat : CP135 3.Check U105.Nos 12, 13 and 14 pin for wave form : CP136...
  • Page 36 G510 Service Manual CP136 CP134 CP135 CP135 CP134 CP137 CP136` CP136` CP134 CP137 CP135 PANTECH R&D CONFIDENTIAL...

  • Page 37: Vibrator Not Working

    G510 Service Manual 6.2.7 Vibrator not working 1. Check to see if U101 No. C5(Q105.2) pin is 2.8V(duty:70%, 70Hz) : CP138 Check to see Q105 cold solder,broken,short to the other PCB pattern or not If you find out any defect, you replace it 2.

  • Page 38: Sim Card Part

    G510 Service Manual 6.3 SIM card part 6.3.1 SIM error Check to see if J103-JST No. 1 pin is 2.85V : CP140 Check to see U103.18 pin cold solder,broken,short to the other PCB pattern or not : CP141 If you find out any defect, you replace it 2.Check to see J103-JST.2.3.6 for wave form : CP142...

  • Page 39: Charger Part

    G510 Service Manual 6.4 Charger part 6.4.1 Charging error Insert adaptor into I/O jack. Check to see if U103. 7 pin is 5.2V : CP143 Check to see J101.23 .24 pin and D116 cold solder,broken,short to the other PCB pattern or not : CP144 If you find out any defect, you replace it 2.Check to see U103.14 pin is low(0V) : CP145...
  • Page 40 G510 Service Manual CP145 CP143 CP146 CP144 PANTECH R&D CONFIDENTIAL...

  • Page 41: Rf Part

    G510 Service Manual 6.5 RF Part 6.5.1 Test conditions 1. Test condition 1 : VBAT = 3.8V during all tests 2. Test condition 2 : Traffic channel :EGSM Band Tx mode Ch62 Power Level : 13 3. Test condition 3 : Traffic channel : PCS Band...

  • Page 42: Power Supply Check Point

    G510 Service Manual 6.5.2 Power Supply Check Point Test Step Typical Value Condition Checking Point point U907 3.8V 2, 3, 4, 5 Check route connection : VBAT Pin#1 U907 2.8V 2, 3, 4, 5 Check route connection : VBAT Pin#5 U701 3.8V...
  • Page 43 G510 Service Manual Fig.6-3 Z710 PAM’s Power Check Point Fig.6-4 Z710 PAM’s PCB Layout PANTECH R&D CONFIDENTIAL...

  • Page 44: Power Amplifier Module

    G510 Service Manual 6.5.3 Power Amplifier Module - First check the Power Supply Check point following 6.3.2. Then you can trace the guideline of PAM as follows . Test Step Typical Value Condition Checking Point point Z710 Logic High 2, 3...
  • Page 45 G510 Service Manual STEP 3-2 Fig.6-6. PAM PCSSEL Test Point Circuit Fig.6-7. PAM TXEN and PCSSEL Test Point on the PCB Layout PANTECH R&D CONFIDENTIAL...

  • Page 46: Vctcxo

    G510 Service Manual 6.5.4 VCTCXO Test Step Typical Value Condition Reaction to Abnormality point V801 0.5V ~ 2.5V 2, 3, 4, 5 Check route connection : AFC Pin#1 V801 2.8V 2, 3, 4, 5 Check route connection : VTCXO Pin#4 Fig.6-8.

  • Page 47: Antenna Switch Module

    G510 Service Manual 6.5.5 Antenna Switch Module Step Test point Typical Value Condition Check point When Pin#11 is Logic High and Pin#2 Z701 2.6V is Logic Low the mode is EGSM band. Pin#11 While Pin#2 is Logic High and Pin#11 Z701 2.6V...
  • Page 48 G510 Service Manual FCC & Industry Canada Regulatory Compliance This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

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