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Pantech G310 Service Manual

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G310 Service Manual
G310
G310 Service Manual
(GSM Cellular Phone)
Pantech Co., Ltd., Korea
September 8, 2003
st
1
Edition
For Use by Authorized Service/Maintenance Personal Only
Documents to Receive This Addendum:
G310 Maintenance/Repair/Operating Manual

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  • Page 1 G310 Service Manual G310 G310 Service Manual (GSM Cellular Phone) Pantech Co., Ltd., Korea September 8, 2003 Edition For Use by Authorized Service/Maintenance Personal Only Documents to Receive This Addendum: G310 Maintenance/Repair/Operating Manual...

  • Page 2: Table Of Contents

    G310 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 G310 Service Manual 6.2.6 M ......................40 ELODY INGING 6.2.7 VIBRATOR NOT WORKING …………………………………………………………………...…41 6.3 SIM CARD PART ……………………………………...…………………………………………….42 6.3.1 SIM ………………………………………………………………………………………….42 ERROR 6.4 CHARGER PART……………………………………………………………………………………..43 6.4.1 C ………………………………..…………………………………………………43 HARGING ERROR 6.5 RF PART…………….………………………………………………………………………………… 45 6.5.1 T ………………………………………………………………… …………………45 EST CONDITIONS 6.5.2 P...

  • Page 4: Section 1 Introduction

    G310 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 G310 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

    G310 Service Manual Section 2. Electrical Specifications 2.1 General E-GSM / PCS Band Mobile Transmit Frequency 880 MHz ~ 915 MHz/1850 MHz ~1910 MHz Mobile Receive Frequency 925 MHz ~ 960 MHz/1930 MHz ~1990 MHz The Number of Time Slot...

  • Page 7: Section 3 Operation

    G310 Service Manual Section 3 Operation 3.1 Name of each part Antenna Two-mode Speaker Display Screen PANTECH R&D CONFIDENTIAL...

  • Page 8: Display

    G310 Service Manual 3.2 Display(Dual LCD) Parameter Projected Actual (MAIN LCD) Display Color TFT LCD with white LED back lighting 262,144 colors European Character : (font size : 16×16) 7 lines x 8 characters Chinese Character : (font size : 16×16) 7 lines × 8 characters µPD161691 (NEC)

  • Page 9: Section 4 Theory Of Operation

    G310 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 G310 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

    G310 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

    G310 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, and 7color-LED.

  • Page 13: Radio Transceiver Section

    Fig.4-1. RF Transceiver block diagram Fig.4-2. Top view of RF Transceiver PCB Layout The G310’s RF Transceiver, which is AERO, consists of the Si4200 GSM transceiver (U710), Si4201 universal baseband interface (U702), and Si4133T dual RF synthesizer (U601). The highly...

  • Page 14: Dc Distribution And Regulation Part

    G310 Service Manual transmit and RF voltage controlled oscillator (VCO) modules, and more than 60 other discrete components found in conventional designs. The receive section uses a digital low-IF architecture that avoids the difficulties associated with direct conversion while delivering lower solution cost and reduced complexity. The universal baseband interface (Z710) is compatible with any supplier’s baseband subsystem.

  • Page 15: Transceiver Pin Description

    G310 Service Manual 4.2.2 Transciever pin description Fig.4-3. Top View of Si4200DB-BM Table 4-1. Pin Description of Si4200DB-BM PANTECH R&D CONFIDENTIAL...
  • Page 16 G310 Service Manual Fig.4-4. Top View of Si4201-BM Table 4-2. Pin Description of Si4201-BM PANTECH R&D CONFIDENTIAL...
  • Page 17 G310 Service Manual Fig.4-5. Top View of Si4133T-BM Table 4-3. Pin Description of Si4133T-BM PANTECH R&D CONFIDENTIAL...

  • Page 18: Receive Section

    4.2.3.1 An Overview of Receive section Fig.4-6. Receiver block diagram The G310 model’s Aero transceiver uses a low-IF receiver architecture that follows 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.

  • Page 19: Receiver Part

    G310 Service Manual 4.2.3.2 Receiver Part A. Diplexer: Z701 Diplexer consists of Tx filter, having an antenna port, and dual configuration with the transmitting 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 forPCS bands and transmits it to dual saw...

  • Page 20: Transmit Section

    G310 Service Manual 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 50 ohms output buffers that can drive external power amplifiers (PA), one for the EGSM 900 (880 –...

  • Page 21: Transmitter Part

    G310 Service Manual 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. B. ASM(Antenna Switch Module / built in LPF): Z701 These filters pass through the signals of which frequency band of 880~915MHz, 1850 – 1910 MHz which is the transmit frequency of GSM, PCS system terminal, and it suppresses other images and spurious frequencies when the terminal transmits GMSK modulated frequencies.

  • Page 22: Offset Pll

    G310 Service Manual 4.2.5 Offset PLL 4.2.5.1 An Overview of Offset PLL Fig.4-10. Si4133T Frequency Synthesizer Block Diagram The Si4133T dual frequency systhesizer is a monolithic CMOS integrated circuit that performs IF and RF synthesis. Two complete PLLs are integrated including VCOs, varactors, resonators, loop filters, reference and VCO dividers, and phase detectors.

  • Page 23: Vc-Tcxo(Voltage Controlled Temperature Compensated Crystal Oscillator): V801

    G310 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 Si4133T(U601)_pin7, Si4201(U702)_ pin7 and AD6526(U101). Fig.4-11. Top view of VCTCXO part on the PCB artwork Fig.4-12.

  • Page 24: Section 5 Alignment Procedure

    G310 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 25: Section 6 Equipment Repair Procedure

    G310 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 pin voltage is same with battery power : CP100...
  • Page 26 G310 Service Manual 3. Check to see if Q101.7.8 and 9 pin is same with battery power : CP101 CP101 CP101 PANTECH R&D CONFIDENTIAL...
  • Page 27 G310 Service Manual Check to see if U106 .1 pin is same with battery power : CP102 CP102 CP102 5. Check to see if U103. 21,20.23 and 3 pin is 1.8V, 2.8V, 2.55V and 1.95V : CP103 CP103 PANTECH R&D CONFIDENTIAL...
  • Page 28 G310 Service Manual CP103 CP104 6. Check to see if U103.30 pin becomes to 0V : CP104 Pressing “END” key to turn on equipment. CP104 7. Check to see if C115 and C116 is 1.8V, C118, C119 and C120pin is 2.45V : CP105...
  • Page 29 G310 Service Manual CP105 8. Check to see if U104.39,12 pin , U117.5pin and U122.5 pin is 2.8V : CP106 CP106 CP106 PANTECH R&D CONFIDENTIAL...
  • Page 30 G310 Service Manual 9. Check to see if U106.5 pin and U105.7.32 pin is 2.8V : CP107 CP107 CP107 PANTECH R&D CONFIDENTIAL...

  • Page 31: Oscillation Check

    G310 Service Manual 6.1.2 Oscillation CHECK 1. Check to see if U101 No. A3 and B3 pin is oscillated(32.768KHz) : CP108 Check R138 and then replace X101 CP108 CP108 2. Check to see if U107.4 pin Master Clock(13MHz). : CP109 Check U107 No.

  • Page 32: Keypad Led Not In Operation (3-Color And Blue)

    G310 Service Manual 6.1.3 KEYPAD LED Not in Operation (3-color and blue) 1. Check to see if R421 and 422.1 are around 2.8V (duty: 80%, 256Hz) : CP110 Check R421, 422, Q401, 402, 403 and 404, and then replace those.
  • Page 33 G310 Service Manual CP110 CP111 CP112 PANTECH R&D CONFIDENTIAL...

  • Page 34: Lcd

    G310 Service Manual 6.1.4 LCD Backlight Not in Operation (White) 1. Check to see if U201.2 and 10 pins are 2.8V: CP113 2. Check to see if U201.15 pin (C204) is over 3V : CP114 Replace the U201. CP114 CP113...

  • Page 35: Power Indicated Led & Status Led

    G310 Service Manual 6.1.5 Power indicated LED & Status LED During Stand By Mode Status LED Should be flashing during Stand By (Blue). 1. Check to see if Q202.2 pin voltage is around 2.8V : CP115 Replace the Transistors. During Incoming Call Mode.

  • Page 36: Audio Part ( Earpiece, Hands-Free Earphone, Microphone, Hands-Free Mic )

    G310 Service Manual 6.2 Audio Part ( Earpiece, Hands-free Earphone, Microphone, Hands-free Mic ) 6.2.1 No receiving tone heard ( Ear-piece ) 1. Check to see if U102.F10, A9 and J8 (C118, C119, C120) is 2.55V_A : CP117 2. Check to see if U102.A7 (C124) is around 1.2V : CP118 Set to HP8922M to connect a call and then set to 1kHz.
  • Page 37 G310 Service Manual CP117 CP119 CP118 CP124 CP120 CP121 PANTECH R&D CONFIDENTIAL...
  • Page 38 G310 Service Manual CP122 CP123 CP124 CP117 CP118 CP119 CP121 CP120 CP123 Top Side CP122 PANTECH R&D CONFIDENTIAL...

  • Page 39: Sidetone Not Transmitted (Earpiece )

    G310 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 : CP125 Check that R102, C181 and R104 is cold solder, broken, short to the other PCB pattern or not If you find out any defective part, you replace it.

  • Page 40: Hook Switch Not Working

    G310 Service Manual CP126 CP127 6.2.5 Hook Switch not working 1. Check to see if U111.5 pin is 2.8V : CP129 2. Check to see if U111.1 pin is 0V during pressing Hook Switch : CP130 3. Check to see if U111.3 pin is around 0.3V : CP131...

  • Page 41: Melody Not Ringing

    G310 Service Manual 6.2.6 Melody not ringing 1. Check to see if U105.32, 7 is 2.8V : CP133 2. Check to see if U105.15 is Vbat : CP134 3.Check U105.12, 13, and 14 pin for waveform : CP135 Check that C163, R120, C164, R121 and R122 cold solder, broken, short to the other...

  • Page 42: Vibrator Not Working

    G310 Service Manual 6.2.7 Vibrator not working 1. Check to see if Q105.1 pin is 2.8V (duty : 60%, 70Hz) : CP137 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 43: Sim Card Part

    G310 Service Manual 6.3 SIM card part 6.3.1 SIM error Check to see if J103.1 pin is around 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 J103.2, 3, 6 for wave form : CP142...

  • Page 44: Charger Part

    G310 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 D116.1 cold solder, broken, short to the other PCB...
  • Page 45 G310 Service Manual CP145 CP143 CP146 CP144 PANTECH R&D CONFIDENTIAL...

  • Page 46: Rf Part

    G310 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 47: Power Supply Check Point

    G310 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 Z710 3.8V...
  • Page 48 G310 Service Manual Typ 3.8V Typ 2.8V Fig.6-3 Z710 PAM’s Power Check Point Typ 2.8V Typ 2.8V Fig.6-4 Z710 PAM’s PCB Layout PANTECH R&D CONFIDENTIAL...

  • Page 49: Power Amplifier Module

    G310 Service Manual 6.5.3 Power Amplifier Module - First check the Power Supply Check point following 6.5.2. Then you can trace the guideline of PAM as follows . Test Step Typical Value Condition Checking Point point Z710 Logic High 2, 3...
  • Page 50 G310 Service Manual STEP 3-2 Fig.6-6. PAM PCSSEL Test Point Circuit STEP 3-2 Fig.6-7. PAM TXONPA and PCSSEL Test Point on the PCB Layout PANTECH R&D CONFIDENTIAL...

  • Page 51: Vctcxo

    G310 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...

  • Page 52: Antenna Switch Module

    G310 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 2.8V is Logic Low the mode is EGSM band. Pin#11 While Pin#2 is Logic High and Pin#11 Z701 2.8V...

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