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Pantech PG-1810 Service Manual

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PG-1810 Service Manual
PG-1810 Service Manual
(GSM Cellular Phone)
Pantech Co., Ltd., Korea
February 22, 2006
st
1
Edition
For Use by Authorized Service/Maintenance Personal Only
Documents to Receive This Addendum:
PG-1810 Maintenance/Repair/Operating Manual

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Summary of Contents for Pantech PG-1810

  • Page 1 PG-1810 Service Manual PG-1810 Service Manual (GSM Cellular Phone) Pantech Co., Ltd., Korea February 22, 2006 Edition For Use by Authorized Service/Maintenance Personal Only Documents to Receive This Addendum: PG-1810 Maintenance/Repair/Operating Manual...
  • Page 2 PG-1810 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 PG-1810 Service Manual 6.2.6 Side Tone Not transmitted (Hands-free Mic) ………………………………………………...…37 6.2.7 Vibrator not working ………………………………….……………………………………………..38 6.3 SIM ……………………………………………………………………….39 AND MINI MEMORY PART 6.3.1 SIM error……………………………………………….……………………………………………..39 6.3.2 M …………………………..…………………………………………………40 MEMORY ERROR 6.4 Charger part…………………………………………………………………………………………….41 6.4.1 Charging error………………………………………………………………………………………..41 6.5. C ……………………………..…………………………………….……………43...

  • Page 4: Section 1 Introduction

    PG-1810 Service Manual SECTION 1. I NTRODUCTION 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 This product consists of a handset, battery pack, and Travel charger. Characteristics 1) All the active devices of PG-1810 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: G Eneral

    PG-1810 Service Manual Section 2. Electrical Specifications 2.1 General GSM850 / PCS1900 / DCS1800 Band Mobile Transmit Frequency 824 ~ 849MHz / 1850 ~1910MHz / 1710 ~ 1785MHz Mobile Receive Frequency 869 ~ 894MHz/ 1930 ~1990MHz / 1805 ~ 1880 MHz...

  • Page 7: Section 3 Operation

    PG-1810 Service Manual Section 3 Operation 3.1 Name of each part Intenna 330K Pixel Speaker Camera Sub Display Screen Battery Receiver Main Display Screen Ear Jack Side Key (Camera) Side Key ( MP3 Play ) KEY PAD Micro SD CARD PANTECH R&D CONFIDENTIAL...

  • Page 8: D Isplay

    PG-1810 Service Manual 3.2 Display 3.2.1. Main LCD Parameter Projected Actual (MAIN LCD) Display 260K Colors TFT LCD with white LED back lighting Character : (font size : 16×16) 10 lines x 8 characters Driver CL761AP (Core Logic) Module Dimen.

  • Page 9: Bluetooth Module

    PG-1810 Service Manual 3.4 BLUETOOTH MODULE PANTECH R&D CONFIDENTIAL...

  • Page 10: Section 4 Theory Of Operation

    PG-1810 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”. AD6535(U202) control that power manage regarding power on/off in handset Pressing POWERKEY on the key pad is active on the handset.
  • Page 11 PG-1810 Service Manual 4.1.2.1 Summary The logic part consists of AD6528D ARM7 microprocessor-combined GSM-ASIC, COMBO(flash ROM & SRAM), AD6535 VBC Chip. AD6528D is GSM-ASIC chipset implemented for GSM terminal’s system control and baseband digital signal processing. Major parts used in the logic part are as follows:...
  • Page 12 PG-1810 Service Manual 4.1.2.2 Baseband Digital Signal Processing AD6528D is a GSM core device containing ARM7 CPU core. AD6535 is 148 pin BGA package, consisting of terminal chips. The function and characteristics of clock are as follows: 1) Complete single chip GSM Processor 2) Channel codec sub-system •...
  • Page 13 PG-1810 Service Manual ☞ Configuration by Function of AD6528D 1 Microprocessor Core AD6528D 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 26MHz VCTCXO to provide clock.
  • Page 14 PG-1810 Service Manual 4 RF Interface This interfaces the RF part to control power amplifier, Tx LO buffer amplifier, VC-TCXO, and AGC-end on transmit/receive paths in the RF part. 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.

  • Page 15: Part

    PG-1810 Service Manual 4.1.3 Memory Part Memory consists of COMBO (flash ROM & SRAM). 1 Flash ROM Flash ROM has a capacity of 256Mbit(32MByte). The main programs of the terminal(call processing, user interface, and diagnostic task) and supplemental programs (NAM program and test program) are stored in the flash ROM.

  • Page 16: S Ection

    PG-1810 Service Manual 4.2 Radio Transceiver Section Fig.4-1. RF Transceiver block diagram The PG-1810’s RF Transceiver, which is AEROⅡ(SI4210) transceiver is the industry’s most integrated RF front end for multi-band GSM/GPRS digital cellular handsets and wireless data modems. 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 70 other discrete components found in conventional designs.

  • Page 17: Part

    PG-1810 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 18 PG-1810 Service Manual Table 4-1. Pin Description of Si4210-GM 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 19 PG-1810 Service Manual PG-1810’s Aero II transceiver uses a digital low-IF receiverar chitecture that 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 with direct-conversion...

  • Page 20: Part

    PG-1810 Service Manual PG-1810’s Aero II LNA inputs may be swapped. The low-band LNA inputs, RFIA and RFIE, are interchangeable and may be used to receive either the GSM 850 or E-GSM 900 band. The high-band inputs, RFID and RFIP, are interchangeable and may be used to receive either the DCS 1800 or PCS 1900 band.

  • Page 21: S Ection

    PG-1810 Service Manual 4.2.4 Transmit Section 4.2.4.1 An Overview of Transmit Section Fig.4-8. Transmitter block diagram The transmit section consists of an I/Q baseband upconverter, an offset phase-locked loop (OPLL), and two output buffers that can drive an external power amplifier (PA). One output is for the GSM 850 (824 –...
  • Page 22 PG-1810 Service Manual 4.2.4.2 Transmitter Part A. 6dB attenuators : U304, U305 These passive components are adopted for PAM to operate in a stable output power. B. Antenna Switch Module With SAW Filter : U301 These filters pass through the signals of which frequency band of 824~849MHz,...

  • Page 23: Offset Pll

    PG-1810 Service Manual 4.2.5 Offset PLL 4.2.5.1 An Overview of Offset PLL Fig.4-10. Si4210 Frequency Synthesizer Block Diagram The Aero II 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 24 PG-1810 Service Manual Fig.4-11. Top view of VCTCXO part on the PCB artwork PANTECH R&D CONFIDENTIAL...

  • Page 25: T Est E Quipment

    PG-1810 Service Manual Section 5. Alignment Procedure 5.1 Recommended Test Equipment Model No. Description Maker Remark GSM Mobile Station E5515C Agilent Technologies Test Set 8593E Spectrum Analyzer Hewlett Packard TDS 3054B Oscilloscope Tektronix FLUKE 87 Digital Multimeter Fluke E3630A DC Power Supply...
  • Page 26 PG-1810 Service Manual SECTION 6. Equipment Repair Procedure 6.1.1 Power CHECK 1. Check battery power : 3.5V~4.2V. BATTERY PACK Terminal 2. Check to see if U202. CC201 pin voltage is same with battery power : CP100 CP100 PANTECH R&D CONFIDENTIAL...
  • Page 27 PG-1810 Service Manual 3. Check to see if U202. A4_B4,T2_T3,P1_N1,D16 and T7 pin is 2.8V, 2.8V,1.8V, 2.75V and 1.8V : CP101 CP101 PANTECH R&D CONFIDENTIAL...
  • Page 28 PG-1810 Service Manual 4. Check to see if U202.T14 and R121 pin becomes to 0V : CP102 Pressing “END” key to turn on equipment. CP102 PANTECH R&D CONFIDENTIAL...

  • Page 29: Heck

    PG-1810 Service Manual 6.1.2 Oscillation CHECK 1. Check to see if U201. A3 and B3 pin is oscillated(32.768KHz) : CP103 Check R205 and then replace X1 CP103 2. Check to see if U201.N10 and C201 pin Master Clock(26MHz). : CP104 Check C1.2 pin and then check the PCB pattern, soldering...
  • Page 30 PG-1810 Service Manual 6.1.3 KEYPAD LED Not in Operation 1. Check to see if U121. 6 pin is around 2.8V : CP105 Check U201. 2. Check to see if U121. 3 pin or CC119 are around 3.3V : CP106 Check to see if U121. 1 pin is around : 3.5V ~ 4.2V .

  • Page 31: Peration (W Hite )

    PG-1810 Service Manual 6.1.4 LCD Backlight Not in Operation (White) 1. Check to see if RV1’s Voltage (On LCD Module) is 2.8V and C16’s Voltage (On LCD Module) is 3.5V~4.2V : CP108 Check to see if RV1’s Voltage (On LCD Module) is 4V : CP109 Replace U4 (On LCD Module) Replace LCD Module.
  • Page 32 PG-1810 Service Manual 6.2 Audio Part ( Earpiece, Speaker, Hands-free Earphone, Microphone, Hands-free Mic ) 6.2.1 No receiving tone heard ( Ear-piece ) 1. Check C243, U202.J15(R219) and K15(R220) pins, C237 (Ear Signal) for waveform : CP110 Replace U202, and C243, C237.
  • Page 33 PG-1810 Service Manual 6.2.2 Melody or MP3 is not ringing 1. Check to see U117.D7, E1, J3 are 1.8V : CP 111 Check to see U201 or U114 cold solder,broken,short to the other PCB pattern or not If you find out any defect, you replace it 2.
  • Page 34 PG-1810 Service Manual CP113 CP112 CP111 CP115 CP116 CP115 CP114 CP115 CP116 PANTECH R&D CONFIDENTIAL...

  • Page 35: Mp3 Heard ( H Ands - Free E Arphone )

    PG-1810 Service Manual 6.2.3 No Receivng tone and melody or MP3 heard ( Hands-free Earphone ) Repeat CP 110 ~ 114 Check to see if U102.10 and C125 pins are 2.8V : CP117 Check U102.1, 2, 3, 4 pin for waveform : CP118 Check that U201 or U117 is cold solder, broken, short to the other PCB pattern or not.
  • Page 36 PG-1810 Service Manual 6.2.4 Hook Switch not working 1. Check to see if R227 is 2.8V and Q203.B pin is around 1.56V : CP122 Check that U201, R227, Q203, R234, R235 are cold solder, broken, short to the other PCB pattern or not.
  • Page 37 PG-1810 Service Manual 6.2.5 Side Tone Not transmitted (Mic) Repeat 6-2-1 No receiving tone heard.( Ear-piece ) 1. Check to see if C250, R228 voltage is around 2.5V : CP124 2. Check to see if Mic + pin(S216, C257) is around 1.5V : CP125...

  • Page 38: Side Tone Not Transmitted (Hands-Free Mic)

    PG-1810 Service Manual 6.2.6 Side Tone Not transmitted ( Hands-free Mic ) Repeat 6-2-2 No receiving tone heard.( Hands-free Earphone ). 1. Check that if R223 and C252 pin’s voltage is around 1.77V when the hands-set is connected: CP127 ( If the hands-set is not connected that Voltage is around 0V. ) Check to see U202.N16 or R223, C252 cold solder, broken, short to the other...

  • Page 39: Vibrator Not Working

    PG-1810 Service Manual 6.2.7 Vibrator not working 1. Check to see if U111.2 pin is 2.8V : CP129 Check to see U201 2. Check to see if U111.3 pin is 3.5 ~ 4.2V : CP130 Check to see U111 cold solder, broken, short to the other PCB pattern or not If you find out any defect, you replace it 3.

  • Page 40: Sim Error

    PG-1810 Service Manual 6.3 SIM and mini SD memory part 6.3.1 SIM error Check to see if U109.17 pin is around 2.85V : CP131 Check to see U202.T6 pin and C239 cold solder, broken, short to the other PCB pattern or not.
  • Page 41 PG-1810 Service Manual 6.3.2 Mini SD memory error Check to see if J103.6 pin is around 2.8V : CP133 Check to see U202.B4 and A4 pin cold solder, broken, short to the other PCB pattern or not. If you find out any defect, you replace it Check to see if J103.1 pin is around GND : CP134...

  • Page 42: Charger Part

    PG-1810 Service Manual 6.4 Charger part 6.4.1 Charging error Insert adaptor into I/O jack and Battery. Check to see if Q103.1, 5, 8, 9, 4 and Q201.1, 2 pin are 5.2V : CP136 Check to see J102.23, 24 pin and Q103 cold solder, broken, short to the other PCB pattern or not.
  • Page 43 PG-1810 Service Manual CP136 CP137 CP138 PANTECH R&D CONFIDENTIAL...

  • Page 44: Part

    PG-1810 Service Manual 6.5 Camera Sensor Part 6.5.1 Camera Preview error ( All items are On LCD Module ) Check to see if J1 and J01 connet correct replace the J1 and J01 2. Check to see if U3.6 pin is around 2.8V : CP139 Check to see U1 cold solder, broken, short to the other PCB pattern or not.
  • Page 45 PG-1810 Service Manual CP140 CP139 CP141 PANTECH R&D CONFIDENTIAL...
  • Page 46 PG-1810 Service Manual 6.6 Bluetooth 1. Check to see U118.6 pin is 2.8V : CP 142 Check to see U201 cold solder,broken,short to the other PCB pattern or not If you find out any defect, you replace it 2. Check to see U118.3 pin and CC109 voltage are 2.8V : CP 143...
  • Page 47 PG-1810 Service Manual CP145 PANTECH R&D CONFIDENTIAL...
  • Page 48 PG-1810 Service Manual 6.7 RF Part 6.7.1 Test conditions 1. Test condition 1 : VBAT = 3.8V during all tests 2. Test condition 2 : Traffic channel :GSM850 Band Tx mode Ch190 Power Level : 13 3. Test condition 3 : Traffic channel : DCS Band...

  • Page 49: Ondition 1

    PG-1810 Service Manual 6.7.2 Power Supply Check Point _ TEST CONDITION 1 1. Check to see U302.3 and 5 pin’s Voltage are 2.8V : CP 146 Check to see U201 and U302 cold solder,broken,short to the other PCB pattern or not If you find out any defect, you replace it 2.
  • Page 50 PG-1810 Service Manual CP148 CP147 CP149 PANTECH R&D CONFIDENTIAL...
  • Page 51 PG-1810 Service Manual CP150 PANTECH R&D CONFIDENTIAL...

  • Page 52: Rf Transceiver _ Test Condition 2, 3, 4, 5, 6

    PG-1810 Service Manual 6.7.3 RF Transceiver _ TEST CONDITION 2, 3, 4, 5, 6, 7 1. Check to see C333 and U302.31 pin’s Clock are 26MHz : CP151 Check to see U307 and U302 cold solder,broken,short to the other PCB pattern or not If you find out any defect, you replace it 2.
  • Page 53 PG-1810 Service Manual 6.7.4 Power Amplifier Module_ TEST CONDITION 2, 3, 4, 5, 6, 7 Check to see U303.3 and 4 pin’s input power around 3 dBm : CP154 Check to see U306, U305 and U304 cold solder,broken,short to the other...

  • Page 54: Ilter _ Test Condition 2, 3, 4, 5, 6

    PG-1810 Service Manual 6.7.5 Antenna Switch Module with SAW Filter _ TEST CONDITION 2, 3, 4, 5, 6, 7 6.7.5.1. RX Parat 1. Check to see U301.9 and 11 pin’s Voltage are GND : CP 156 Check to see C304, C305, U201 and U301 cold solder,broken,short to the other...

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