Page 1 Internal Use Only Service Manual KP220 Date: March, 2008 / Issue 1.0...
Page 2: Amendment Record
New Issue Number – Date Changes This Issue, Page and Description Remarks First draft Draft 1.00 29.11.2007 All for Publication Issue Second Draft 1.2 14.02.2008 All for Publication draft Issue Third draft Draft 1.3 18.02.2008 All for Publication Issue KP220 SERVICE MANUAL V1.2...
Page 3 Next Section >> Main Menu SECTION 1 Introduction KP220 SERVICE MANUAL V1.2...
Page 4 1. Introduction The variation of “KP220” is shown below. This Service Manual is indicated for 7338. Variation Note. Product Code Trade Name XXXXXXXX KP220 7338 KP220 SERVICE MANUAL V1.2...
Page 5 This is the Electronic Service Manual for KP220 Triple Band GSM Digital Cellular Telephone from LG. It contains specific information on repair and test procedures. For details of user functions, general operation and installation, please refer to the User Guide.
Page 6: Precautions For Repair Work
Next Section >> Main Menu SECTION 2 Precautions for Repair Work KP220 SERVICE MANUAL V1.2...
Page 7 • It is important to check that the correct DC voltage is applied to the equipment to prevent electrical damage. Component Polarity: Always check the polarity of connections and components before soldering. Particular attention must be paid to IC.s, diodes, transistors, capacitors and any other semiconductor device that is polarity dependent. KP220 SERVICE MANUAL V1.2...
Page 8 Care should be taken not to apply excessive stress or vibration or extreme temperature variations as further faults may develop. KP220 SERVICE MANUAL V1.2...
Page 9 It is advisable to carry out detailed measurements and repair (in particular RX) in a shielded area to minimize RF interference. AC Adapter and Battery Charger: The AC adapter and battery chargers are for indoor use only. Ensure that the devices are not exposed to rain or moisture KP220 SERVICE MANUAL V1.2...
Page 10 Potential hazardous substances are solder fumes, flux, alcohol etc. PCB Handling: It is recommend that cotton gloves are worn during repair work. This is to protect your hands from chemical contamination and to protect the PCBs from fingerprints and humidity KP220 SERVICE MANUAL V1.2...
Page 11 • Be careful for alien substance to approach to sound hole part of the speaker. Be careful sufficiently so as not to blow air with the process into the receiver, speaker/MIC • sound hole. It causes sounds being small by the diaphragm transformation or vibration. KP220 SERVICE MANUAL V1.2...
Page 12: Unit Specifications
<< Previous Section Next Section >> Main Menu SECTION 3 Unit Specifications KP220 SERVICE MANUAL V1.2...
Page 13: Unit Specification
PSRAM + 512Mb NAND Internal NAND 512Mb NAND Memory Card Micro SD Up to 4GB Bluetooth Yes, version 1.2 Yes, slave 1.1 IrMC Yes, 2.0 Java EMAIL Network Link, Status LED Charging Dictionary MPEG4 caller ID KP220 SERVICE MANUAL V1.2...
Page 14 Support JAVA MIDP [ver #] Java Support JAVA CLDC [ver #] oice codec Shall support multiple voice codec Audio - FR decoder - EFR - HR - AMR NB (air link) Shall support multiple audio decoders - MP3 - WMA KP220 SERVICE MANUAL V1.2...
Page 15 - Build-in NAND [MB]. Used as mobile disk. Storage (Notes : Designed footprint shall be possible to support multiple memory capacity) - Micro SD Indication Shall support LED for status indication. 1 Blue LED KP220 SERVICE MANUAL V1.2...
Page 16 Class 10; Operation class B GPRS Class: CS1/CS2/CS3/CS4 GPRS Coding Scheme: EGSM/DCS1800/PCS1900 : Data Rates (Packet): Uplink : Up to 21.4Kbps (1 slot) Downlink : Up to 85.6Kbps (4 slots) EGSM/DCS1800/PCS1900 : Up to 9600Kbps Data Rates (Circuit Switch): KP220 SERVICE MANUAL V1.2...
Page 17 (0 - 124) 890 + (ARFCN x 0.2)MHz (975 - 1023) 890 + 0.2x(ARFCN - 1024)MHz Phase and Frequency Error Peak Phase Error < 20 degrees RMS Phase Error < 5 degrees Frequency Stability < +/- 90Hz KP220 SERVICE MANUAL V1.2...
Page 18 1784.8 MHz TX Frequency Calculation (F )MHz 1710.2 + 0.2 x (ARFCN - 512) = F Phase and Frequency Error Peak Phase Error < 20 degrees RMS Phase Error < 5 degrees Frequency Stability < +/- 180Hz KP220 SERVICE MANUAL V1.2...
Page 19 1909.8MHz TX Frequency Calculation (F )MHz 1850.2 + 0.2 x (ARFCN - 512) = F Phase and Frequency Error Peak Phase Error < 20 degrees RMS Phase Error < 5 degrees Frequency Stability < +/- 185Hz KP220 SERVICE MANUAL V1.2...
Page 20 Mid Channel (Ch 657) 1959.2MHz High Channel (Ch 810) 1989.8 MHz RX Frequency Calculation (F + 80 Mhz = F BER (Bit Error Ratio) Type II BER <2.4% at -102dBm Type II BER <0.1% at -23dBm KP220 SERVICE MANUAL V1.2...
Page 21 << Previous Section Next Section >> Main Menu Section 4 Introduction of Service Level 4-1. SERVICE LEVEL 1 4-2. SERVICE LEVEL 2 KP220 SERVICE MANUAL V1.2...
Page 22: Service Level
9. In certain cases, replace the entire main equipment. 10. Receive back the repaired equipment and carry out a final check. 11. Return the repaired and correctly functioning equipment to the end-user. KP220 SERVICE MANUAL V1.2...
Page 23 Replace the Is the case entire main urgent? unit and accessories Wait to receive repaired equipment from level 2. Physical inspects the equipment. Check normal Return From Level Return the equipment to the customer. KP220 SERVICE MANUAL V1.2...
Page 24 Used for testing the charging function of faulty equipment and / or battery. Simple Hands free Kit : Used for testing the Hands free relevant functions of faulty equipment. USB Cable : Used for testing the connection between HHP and PC. KP220 SERVICE MANUAL V1.2...
Page 25 5. 7. Perform the final test with a workable SIM card. Fill out the repair report. 8. Return the equipment to Service Level 1 with the repair report. KP220 SERVICE MANUAL V1.2...
Page 26 Receive the fault report, faulty equipment. Flow of Service Level 2 Verify the faults reported at Service Level 1 and id entify the doubtful modular sub-units Disassemble the equipment. Temporarily replace the faulty modular sub-unit or part with a good one to see if this c lears the trouble.
Page 27: Circuit Description
<< Previous Section Next Section >> Main Menu Section 5 Circuit Description 5-1. LOGIC BLOCK DIAGRAM 5-2. LOGIC...
Page 29: Logic Block Diagram
5-1. LOGIC BLOCK DIAGRAM...
Page 30: System Block Diagram
MT6305: PMIC handles all baseband power • FM Radio IC(SI4703) • Main LCM (262K TFT) • Camera (1.3M pixels CMOS sensor) • Bluetooth(BC313141A18) • TOSHIBA MCP(128+32+512MB) • User I/O (KEY,MINI SD CARD,USB Client, SIM card ) 5-2-2. SYSTEM BLOCK DIAGRAM KP220 SERVICE MANUAL V1.2...
Page 31: Memory Subsystem
All these parameters are based on cycle time of system clock. The interface definition based on such scheme is listed in following table. Note that, this interface always operates data in Little Endean format for all types of accesses KP220 SERVICE MANUAL V1.2...
Page 32: Mtk6226 Base Band Chip
Timing Generator - generates the control signals related to the TDMA frame timing. Power, Reset and Clock subsystem - manages the power, reset, and clock distribution inside MT6226. Details of the individual subsystems and blocks are described in following Chapters. KP220 SERVICE MANUAL V1.2...
Page 33 MTK 6226 Interface KP220 SERVICE MANUAL V1.2...
Page 34 GSM sub-blocks. Sophisticated controls are available for power-up during battery charging, keypad interface, and RTC alarm. The MT6305 is optimized for maximum battery life, featuring a ground current of only 107μA and 187μA when the phone is in standby and operation respectively. KP220 SERVICE MANUAL V1.2...
Page 35 High for VA enabled with VTCXO, Low for VA enabled with VD, Internal Pull Low to DGND VMSEL High for Vm=2.8 V, Low for Vm=1.8V, Internal Pull High to VIO VBAT Battery Input Voltage VCORE Digital Core Supply KP220 SERVICE MANUAL V1.2...
Page 36 The digital filter block performs filter operations for voice band and audio band signal processing. The Digital Audio Interface (DAI) block communicates with the System Simulator for FTA or external Bluetooth modules. Figure 1 Block diagram of audio front-end KP220 SERVICE MANUAL V1.2...
Page 37 The following is 7332 ADC in use. External ADC name Purpose in 7332 ADC0_1- Detect Battery Voltage and Current ADC0_1+ Detect Battery Voltage and Current ADC2_TBAT Detect Battery tempter ADC3_VCHG Detect Charging voltage ADC5_USB Detect USB device ADC6_ASS_ID Detect hand free KP220 SERVICE MANUAL V1.2...
Page 38: Key Switches
5-2-6. KEY SWITCHES Circuit Diagram KP220 SERVICE MANUAL V1.2...
Page 39 KP220 SERVICE MANUAL V1.2...
Page 40: Key Backlight Led
5-2-7. VIBRATOR Circuit Diagram 5-2-8. KEY BACKLIGHT LED There are eight LEDs used for key backlighting. The LED driver of 6305 controls these LEDs. Circuit Diagram KP220 SERVICE MANUAL V1.2...
Page 41: Battery Charging
Battery management, which controls charge and discharge of the battery is the most important function for safety. 7338 SW performs charging algorithm. To regulator the power PMOS for set the charging current. KP220 CHARGING CIRCUIT AND ALGORITHM charging Circuit and Algorithm 7338 Charging circuit: The schematic below shows the external charging components used in the Arima 7338 project.
Page 42 10mA trickle current of MT6305 charges the battery internally. When the battery voltage exceeds 2V, the pre-charge current is enabled, which allows 10mV (typically) across the external current sense resistor. This pre-charge current can be calculated: KP220 SERVICE MANUAL V1.2...
Page 43 Vbat < 3.2V, an UVLO signal is active low. When Vbat >= 4.3, an OV signal is active and terminates charging. The disconnection of battery could be detected by BATDET pin. BATDET is pulled high internally when battery disconnected and terminates charging immediately. KP220 SERVICE MANUAL V1.2...
Page 44: Real Time Clock (Rtc)
5-2-10. REAL-TIME CLOCK (RTC) RTC is the feature to count “second”. MTK6226M’s clock generation on 32.768kHz is made by OSC(X401 in 7338), connecting to OSC32K_IN/ OSC32K_OUT and supply the clock to 6305. KP220 SERVICE MANUAL V1.2...
Page 45 RTC module of 7338 is supplied by 3V Backup Battery made by Sanyo. he target of running time of the backup battery (fully charged) is longer than two ours after the main battery is removed. KP220 SERVICE MANUAL V1.2...
Page 46: External Interface
5-2-11. EXTERNAL INTERFACE The pin arrangement of system I/O is shown below. KP220 SERVICE MANUAL V1.2...
Page 47: Sim Interface
Trident-HP or the SIM card. All the above control signals maintain their state when MTK6226M is powered down. This allows the SIM to remain powered during soft-OFF. SIMPWR should be switched OFF when handset ‘hard-OFF’ mode is selected. KP220 SERVICE MANUAL V1.2...
Page 48 The LCD backlight is controlled by the PWL signal from the MTK6226M. The backlight is turned on when PWM1_LCM_EN is high. The LCD backlight a 5V power supply. The RT9396 DC/DC converter (U801) generates the signal for LED1,LED2 ,LED3 Detailed circuit diagram is as shown below. KP220 SERVICE MANUAL V1.2...
Page 49 5-2-13.2 Camera Control Overview of voltage supply for Camera RT9182 provides power supply for Camera shown below. KP220 SERVICE MANUAL V1.2...
Page 50: Display System
5-2-14. DISPLAY SYSTEM 2-14.1 TFT LCD Module The IM177BBNBA model is a Color TFT LCD supplied by LG . This Module has a 1.77 inch diagonally measured active display area with 128(RGB)X160 resolution Each pixel is divided into Red, Green and Blue sub-pixels and dots which are arranged in vertical stripes.
Page 51 5-2-14.2 LCD interface KP220 SERVICE MANUAL V1.2...
Page 52 5-2-15. CAMERA 5-2-15.1 Camera Module 5-2-15.2 Specifications KP220 SERVICE MANUAL V1.2...
Page 53: Audio Subsystem
5-2-16. AUDIO SUBSYSTEM 5-2-16.1 Outline The audio system is composed of MTK6226M, PMU IC (MT6305). The attached device is MIC, Receiver, Speaker. 5-2-16.2. Audio Control Speaker interface Use U702 to amplify voice and voice signal from MP3_OUTL Receiver and Microphone The receiver is a 32Ω...
Page 54 Hands Free Interface NEC Confidential & Proprietary...
Page 55 5-2-17 FM interface MT6226 integrates a mixed-signal Baseband front-end in order to provide a well- organized radio interface with flexibility for efficient customization. It contains gain and offset calibration mechanisms, and filters with programmable coefficients for comprehensive compatibility control on RF modules. This approach also allows the usage of a high resolution D/A Converter for controlling VCXO or crystal, thus reducing the need for expensive TCVCXO.
Page 56: Bluetooth Interface
5-2-18 Bluetooth interface BuleCore3-ROM CSP is signal chip radio and baseband chip for Bluetooth wireless technology 2.4G Hz system .it is implemented in 0.18um CMOS technology. The 4Mbit ROM is metal programmable ,which enables an eight week turn-around from approval of firm are to production samples. NEC Confidential &...
Page 57 5-2-19 RF Sub-systems MT6129 is a highly integrated RF transceiver IC for multi-band Global Systems for obile communication (GSM) and General Packet Radio Service (GPRS) cellular system applications. The MT6129 includes four LNAs, two RF quadrature mixers, an integrated channel filter, programmable gain am plifiers (PGA), an IQ demodulator for receiver, a precision IQ modulator with offset PLL for the transmitter, two internal TX VCOs, a VCXO, on-chip regulators, and a fully programmable sigma-delta...
Page 58 5-2-19.1 Receiver The receiver section of MT6129 includes Quad-band low noise amplifiers (LNAs), quadrature mixers, an on-chip channel filter, Programmable Gain Amplifiers (PGAs), quadrature second mixers, and a final low-pass filter. The very low-IF MT6129 uses image-rejection mixers and filters to eliminate int erference.
Page 59 5-2- 9.3 TX VCO o power VCOs are integrated w ith O LL to form a complete transmitter circuit. he TX VCO output power is t ypically 9 dB m wi th +/- 2.5dB variation in E-GSM900/ 50 bands and +8 dB utput power with +/- 2dB variation in DCS1800/ CS19...
Page 60 5-21-19.5 Volta ge Control Crystal Oscillator Voltage Control Crystal Oscillator (VCXO) consists of an amplifier, a buffer, and a programmable capacitor array. The VCXO provides the MT6129 with a selectable reference freq uency of either 13 MHz or 26 MHz. The amplifier is designed to be in eries resonance with a standard 26 MHz crystal.
Page 61 << Previous Section Next Section >> Main Menu SECTION 6 Servicing 6-1. Structure 6-2. Accessories 6-3. Soldering NEC Confidential & Proprietary...
Page 62 6-1. STRUCTURE 1. KP220 Front View Back View NEC Confidential & Proprietary...
Page 63: Main Board Assembly
MAIN BOARD ASSEMBLY he lower board consists of the following cir cuits:- 1.Tri band GPRS GSM Transceiver and logi c Unit 2.SIM con nection socket 3.System I/O connector with charge capability 4.battery term inals 5.Hands f jack 6.Embedded tri band antenna connection terminal 7.Vibrator conn ection terminal 8.Microphone...
Page 64: Front Cover
FRONT COVER 2. keypad The Front cover contains following m ain parts :- .Receiver 2.Keypad 1.Receiver NEC Confidential & Proprietary...
Page 65: Rear Cover
The Rear cover contains following main parts :- 1. Speaker 2. Vibrator 3. Microphone 4. Antenna 5. Charger cover 6. SD card cover 7. Volume key 8. Camera key Charger cover vibrator speaker microphone Antenna Volume key SD Card cover Camera key KP220 SERVICE MANUAL V1.2...
Page 66 6-2. ACCESSORIES BATTERY AC ADAPTER KP220 SERVICE MANUAL V1.2...
Page 67 HANDSFREE & USB CABLE Cable KP220 SERVICE MANUAL V1.2...
Page 68 SOLDERING REPAIRED PARTS AT SERVICE LEVEL 2 ARE SHOWN AS BELOW. Bluetooth BC313141A18 Status ystal 32.768KHz 26 MHZ Key Board LP3995 Connector FM Receiver antenna switch Si4703 ESHS-C085TK Receiver Contact Baseband Controller MT6226 SKY77318 Hot Bar PMIC MT6305 MCP Memory TV00579002EAGD KP220 SERVICE MANUAL V1.2...
Page 69 Micro SD Slot Vibrator Battery Contact Contact RT918 2 Microphone Contact Camera Modu Socket Audio Amplifier LM4671 SIM Card Connector Speaker Contact Antenna Mini USB Pogo Pin Connector RF Switch Connector MM8430 KP220 SERVICE MANUAL V1.2...
Page 70 CONVER TCXO 26MHz P Ch annel T+Sch ottky Si58 53DC ARRAY 5V0L5UY nscei MT6129 S ARR D5V0L 42M50 Filt FAR- G 8425 Backup Batt XH414H IV01E SAW Filter FAR- 9600 KP220 SERVICE MANUAL V1.2...
Page 71 << Previous Section Next Section >> Main Menu Section 7 Repairing 7-1. Testing 7-2. Troubleshooting KP220 SERVICE MANUAL V1.2...
Page 72 If necessary, use a shielded box or take other channel measures. E-GSM DCS1800 PCS1900 975ch to 980ch 513ch to 523ch 512ch to 522ch Ｌch 60ch to 65ch 690ch to 710ch 657ch to 667ch Ｍch 120ch to 124ch 874ch to 884ch 800ch to 810ch Ｈch KP220 SERVICE MANUAL V1.2...
Page 73: Product Specification
In confidence test, general Phase2 (or Phase2+) test SIM should be used. RF connect or and RF cable connector and RF cable should be used for RF test PC-Link cable PC-link cable (Serial Link Cable) should be used. KP220 SERVICE MANUAL V1.2...
Page 74: Function Test
3.1.2 SIM Card installed a. Power on Phone b. Press to enter service mode. *#878# 3.1.3 Software Version Check Select item 1 “Servi ce Info” in Service mode to check software version. KP220 SERVICE MANUAL V1.2...
Page 75 Loud SPK Ring Tone 10. LED 11. LCD 12. Receiver 13. ADC 14. Ch arger 15. Hea dset 16. R 17. MT . UART 19. Memory Card 20. Nand Flash 21. Camera Total call time FM Radio KP220 SERVICE MANUAL V1.2...
Page 76: Confidence Test
8. RF Cable Measurement setup is shown as follows: Test Instruments Calibration adapter 5. USB Cable 1. PC Lower Board 6. UART Cable 8. RF Cable 4. GSM Test Set 2. PRINTER E5515B (HP8960) 3. PSU HPE3631A KP220 SERVICE MANUAL V1.2...
Page 77 Frequency Error pass/ fail indication. Det ail specification is shown as table 4.1 ower Vs Time <2.4% @ -10 3.5dBm (avg 10000bit) X Class2 RBER 7 +/-4 @ -103.5dBm X Level <3 @ -1 03.5dBm X Quality KP220 SERVICE MANUAL V1.2...
Page 78 -1dBc for power control levels 13,1 and 15 (***) For GSM 900 M : -30 dBc or -17 dBm, whichever is the higher. For DCS1800 an d PCS19 MS : -30dBc or -20dBm, whichever is the higher. KP220 SERVICE MANUAL V1.2...
Page 79 Control Base station Channel Control Base station Amplitude -85dBm Mobile Phone Channel 661 ( could be changed ARFCN Mch ) Mobile Phone TX Level Mobile Phone Timeslot PSU output voltage +3.8V +/- 0.05V PSU maximum current limit 2800mA KP220 SERVICE MANUAL V1.2...
Page 80 ( Test is repeated under DCS1800 band ) DCS1800 1. Push “END Call” of GSM tester Close down 2. Wait to indicate “Call End” and change to idle screen. 3. Push “Power” to check shut down. *1 Refer to 1.Overview Channel selection condition KP220 SERVICE MANUAL V1.2...
Page 81 2. Wait to indicate “Mobile reported RX Qual” and read it. PCS1900 1. Push “END Call” of GSM tester Close down 2. Wait to indicate “Call End” and change to idle screen. 3. Push “Power” to check shut down. *1 Refer to 1.Overview Channel selection condition KP220 SERVICE MANUAL V1.2...
Page 82: Test Procedure
HexPeek,700CC008,3,1 Min05a39a80(HEX) Check RTC time clock register Max05a4ec00(HEX) value (24hour) Note : Stingray’s Back Up Battery will become empty in 2.5 days. Back Up Battery test must be performed within two days after soldering VIB FPC. KP220 SERVICE MANUAL V1.2...
Page 83: Troubleshooting
Change PMU IC PMIC_VCTXO = 2.8V VMEM = 2.8 V Re-soldering J704or Check J704 PIN 11 Change J704 is well ? Check X401 output is Change X401 or X201 32KHz and X201 output is 26MHz ? Re-download SW KP220 SERVICE MANUAL V1.2...
Page 84 VCORE = 1.8 V VDD = 2.8 V VMEM = 2.8 V PMIC_VCTXO = 2.8V AVDD =2.8 V Power Management X 401 X401 signal KP220 SERVICE MANUAL V1.2...
Page 85 EINT2_CHARGER = low , Change U502 EINT2_CHARG ER = high ? Voltage at pin 5~8 of R510 Change U401 = 1.4 V ? The battery may have the problem Is the battery charged ? Change the battery and again. KP220 SERVICE MANUAL V1.2...
Page 86 Charging will operate properly U501 Pin 3 = 5 v U501 Pin 4 = 4 v R510 Pin 5~8 = 1.4 V U201 Pin 5,6 = High KP220 SERVICE MANUAL V1.2...
Page 87 Pin 5 , 6 of U502 GPIO31_CHR_CLT = low , Change U401 GPIO31_CHR_CLT = high ? EINT2_CHARGER = low , Change U502 EINT2_CHARGER = high ? Voltage at pin 4 of U504 Change U504 =3 V? Charging will operate properly KP220 SERVICE MANUAL V1.2...
Page 88 4. Receiver Circuit Diagram Receiver signal KP220 SERVICE MANUAL V1.2...
Page 89 When you enter test mode , Check B703 ,B 704 = 0 Ω ? Change B703 ,B704 select test receiver. C702 will have signal Change U401 Re-setting to factory mode Re-download SW Charging will operate properly KP220 SERVICE MANUAL V1.2...
Page 90 5. MIC phone Circuit Diagram ~1.2MΩ ~1.2MΩ KP220 SERVICE MANUAL V1.2...
Page 91 Check L705 , L706 , R717,R718 Change U401 select test echo. R719 , R719,R721,C719,C722 C741 will have 1.2MΩ Has shift , lose or open ? Re solder the component Re-setting to factory mode Re-download SW Charging will operate properly KP220 SERVICE MANUAL V1.2...
Page 92: Ring Volume
6. Ring volume Circuit Diagram C740 signal C728 Signal KP220 SERVICE MANUAL V1.2...
Page 93 Check SPEAKER =8Ω ? Change speaker When you enter test mode , Change U702 select test loudspeaker. C740 will have signal Check C728 signal ? Change U401 Re-setting to factory mode Re download SW Charging will operate properly KP220 SERVICE MANUAL V1.2...
Page 94 7.Vibration Circuit Diagram VIB on VBAT VIB on Vibrator PART KP220 SERVICE MANUAL V1.2...
Page 95 Replace the Main board point of vibrator VBAT ? Check the VIB_ON signal Replace the U502 at R609 (Pin 38 at U502) Does D602,C604,C693 Replace the D602,C604,C693,R609 ,R609 are work properly ? Vibrator will work properly KP220 SERVICE MANUAL V1.2...
Page 96: Lcd Part
7 LCD Circuit Diagram Pin1 LCD PART START KP220 SERVICE MANUAL V1.2...
Page 97 Check Voltage Pin3, 20 of LCM ? Check C809,C808,C807 Replace the C807,c808,c809 soldering and damage ? Check the control signal Replace the U401 PIO18_LCM_ID, LCM_MAIN_CS,LRSTB, LWRB,LPA0,LRDB,NLD 0~7 Change Main Board or Re-download SW Check LCD Backlight Done KP220 SERVICE MANUAL V1.2...
Page 98 8 LCD Black light Circuit Diagram PART LCD Black light KP220 SERVICE MANUAL V1.2...
Page 99 START Change LCD Check PWM1_LCM_EN of signal Replace the U401 Check Voltage at Pin 1,4,7,8 of U801 Replace the U801 Re-download SW LCD Black light will work properly KP220 SERVICE MANUAL V1.2...
Page 100 7. Camera 1.2V 2.8V 4.0V KP220 SERVICE MANUAL V1.2...
Page 101 Check voltage at pin Replace U901 1,5,6 of U901 is ok ? Check signal at pin Replace U401 1,2,9,11,12 of J902 Change camera or J0902 Check signal at pin 14 of J902 Re-download SW Camera will work properly KP220 SERVICE MANUAL V1.2...
Page 102 9. Bluetooth KP220 SERVICE MANUAL V1.2...
Page 103 302,C303 = 3 V ? Check U303 of Replace U401 GPIO41_BT_LDOEN is high ? Check X301 have Replace X301 26MHz signal ? Replace U302 Check voltage of L305 = 3 V? Replace U302 Check L304,L304 of signal KP220 SERVICE MANUAL V1.2...
Page 104 Check C301 signal Replace U302 Re-download SW Change Main Board Bluetooth will work properly KP220 SERVICE MANUAL V1.2...
Page 105 10. Earphone 0.2 V KP220 SERVICE MANUAL V1.2...
Page 106 Check MP3_OUTR and MP3_OUTL of signal when you play music Replace FL701 Check MICN1 and MICP1 of sign hen you use earphone talking Check MP3_OUTR and MP3_OUTL of Replace U401 signal when you use earphone talking KP220 SERVICE MANUAL V1.2...
Page 107 Re-download SW Earphone will work properly KP220 SERVICE MANUAL V1.2...
Page 108 11. SIM card KP220 SERVICE MANUAL V1.2...
Page 109 START Adjust J501 or Check J501 Pin is well ? change J501 Check V501~V504 is OK ? Replace U502 SIM will work properly KP220 SERVICE MANUAL V1.2...
Page 110 12. FM (radio) KP220 SERVICE MANUAL V1.2...
Page 111 Check C709 of signal ? Replace U701 Che k R727 and R728 signal ? Check J704,C712,L707,C707 Check J704 of Pin1 = 0.8Ω ? have short to GND ? Replace J704,C712,L707,C707 Re download SW FM will work properly KP220 SERVICE MANUAL V1.2...
Page 112 3. Keypad KP220 SERVICE MANUAL V1.2...
Page 113 Re-soldering connector or Check J601 connector is ok ? Change connector Re-soldering component or Check V607,V608,V609 Change new component is 90Ω ? Replace U401 or Change PCBA Check V607,V608,V609 is open ? Keypad will work properly KP220 SERVICE MANUAL V1.2...
Page 114: Rf Trouble Shooting
Check C511 and R205=2.6 V ? Replace X201 Check C215 of signal is ok ? Check Pin2 of signal from Replace U201 R101 is ok ? Check Pin1 of signal from Replace R101 R101 is ok ? KP220 SERVICE MANUAL V1.2...
Page 115 Replace J102 Check J102 of signal is ok ? Check C103 , C101,L115 , lace C103 ,C101,L115 , 1 is ok ? L101 is ok ? Re-calib ration and Re-download SW It will be work . KP220 SERVICE MANUAL V1.2...
Page 116 R205 = 2.6 V X201 C209 C215 U201 R101 J102 L111 U201 U102 L102 C110 KP220 SERVICE MANUAL V1.2...
Page 117 Check C511 and R205=2.6 V ? Replace X201 Check C215 of signal is ok ? Check Pin2 of signal from Replace U201 R102 is ok ? Check Pin1 of signal from Replace R102 R102 is ok ? KP220 SERVICE MANUAL V1.2 KP220 SERVICE MANUAL V1.2...
Page 118 Check L111 of signal is ok ? Replace J102 Check J102 of signal is ok ? Check C103 , C101,L115 , Replace C103 ,C101,L115 , L101 is ok ? L101 is ok ? Re-calibration and -download SW It will be work . KP220 SERVICE MANUAL V1.2...
Page 119 R205= 2.6 V X201 C209 C215 U201 R102 J102 L101 L115 C103 C101 L111 U201 U102 C115 L103 KP220 SERVICE MANUAL V1.2...
Page 120: Device Information
<< << Previous Section Next Section >> Main Menu Section 8 Device Information KP220 SERVICE MANUAL V1.2 KP220 SERVICE MANUAL V1.2...
Page 121 8. DEVICE INFORMATION DSC (DIGITAL STATIC CAME RA) M ODULE Pin List KP220 SERVICE MANUAL V1.2...
Page 122 FRONT END MODULE (TX/ RX SWITCH) 1. Pin L t KP220 SERVICE MANUAL V1.2...
Page 123: Flash Memory
FLASH MEMORY 2. Pin List KP220 SERVICE MANUAL V1.2...
Page 124 ELODY IC 1. Fu nction Block KP220 SERVICE MANUAL V1.2...
Page 125 POWER AMP MODULE (PA) 1. Function Block 2. Pin List KP220 SERVICE MANUAL V1.2...
Page 126 1. Function Block KP220 SERVICE MANUAL V1.2...
Page 127 Reserve for 26MHz Clock to Bluetooth GPIO11_BT_26MHz GPIO_11 RF hard-wire control bus 7 32KHz output to FM IC (U701) GPIO12_FM_32KHz GPIO_12 RF hard-wire control bus 4 GPIO_13 RF hard-wire control RFVCOEN [Output] RFVCO Enable bus 5 KP220 SERVICE MANUAL V1.2...
Page 128 Control GPIO_32 SIM card supply SIMSEL SIM card supply voltage select Output power select GPIO_33 UART 3 receive data BT_URXD3 Blue Tooth UART_RX data Input GPIO_34 UART 3 transmit data BT_UTXD3 Blue Tooth UART_TX data Output KP220 SERVICE MANUAL V1.2...
Page 129 Not Used Not Used select 5 GPIO_54 External memory chip Not Used Not Used select 4 GPIO_55 Parallel LCD/Nand- Not Used Not Used Flash Data 16 GPIO_56 Parallel LCD/Nand- Not Used Not Used Flash Data 17 KP220 SERVICE MANUAL V1.2...
Page 130 MT6305(PMUIC) KP220 SERVICE MANUAL V1.2...
Page 131 High for VA enabled with VTCXO, Low for VA enabled with VD, Internal Pull Low to DGND VMSEL High for Vm=2.8 V, Low for Vm=1.8V, Internal Pull High to VIO VBAT Battery Input Voltage VCORE Digital Core Supply KP220 SERVICE MANUAL V1.2...
Page 132 Bluetooth KP220 SERVICE MANUAL V1.2...
Page 133 Pin Sheet KP220 SERVICE MANUAL V1.2...
Page 134 KP220 SERVICE MANUAL V1.2...
Page 135 FM (radio) KP220 SERVICE MANUAL V1.2...
Page 136 TRANSCEIVER 1. Function Block KP220 SERVICE MANUAL V1.2...
Page 137 2. Pin List KP220 SERVICE MANUAL V1.2...
Page 138 ○ Agilent 661x or Agilent 663x2 series power supply ○ R&S NGSM Power Supply ○ KEITHLEY 2303, 2304, 2306 ○ Agilent 3631A power supply ○ Willtek WT4400 power supply option Others USB download cable Dummy battery RF cable KP220 SERVICE MANUAL V1.2...
Page 139 The following diagrams depict the system setups when using the R&S CMU200 or Agilent test platform. KP220 SERVICE MANUAL V1.2...
Page 140 Connect 8960, power supply ,computer ,phone KP220 SERVICE MANUAL V1.2...
Page 141 To install the MTK ATE tool, execute the setup.exe file. The Installation Wizard guides the user through the installation process step by step. Press Next KP220 SERVICE MANUAL V1.2...
Page 142 Press Next START INSTALL KP220 SERVICE MANUAL V1.2...
Page 143 PRESS FINISH AND INSTALL FINISH Install META and press Next KP220 SERVICE MANUAL V1.2...
Page 144 Choose Modify and press NEXT Press NEXT KP220 SERVICE MANUAL V1.2...
Page 145 Press Install Press Finish KP220 SERVICE MANUAL V1.2...
Page 146 Execute Measurement & Automation to check equipment address Choose Devices and Interfaces KP220 SERVICE MANUAL V1.2...
Page 147 You can see your equipment address Choose MTK_7332_SETUP_ep1_20070322.ini and open the file to setup from data files KP220 SERVICE MANUAL V1.2...
Page 148 Setup your CMU Base GPIB address and power supply address Please setting AG8960 GSM = 1 and save the file KP220 SERVICE MANUAL V1.2...
Page 149 ATE Tool system setting Execute MTK _ ate demo P ss Report & System button KP220 SERVICE MANUAL V1.2...
Page 150 Setting your equipment Setting Bar Cade Get Type When Calibration Choose “Scan Barcode” KP220 SERVICE MANUAL V1.2...
Page 151 Setting your power supply type Choose your Power Supply Type Setting your GSM/EDGE Tester Choose your Tester KP220 SERVICE MANUAL V1.2...
Page 152 Choose Baseband Chip Type Choose your baseband chip type :6226 Choose your download com port Choose your download cable connect COM port KP220 SERVICE MANUAL V1.2...
Page 153 Cancel Loss Cancel Cal INP LOSS and Cal OUP LOSS hoose “select test setup file” To select the setup file in this icon (For example:MTK_7338_SETUP.ini) KP220 SERVICE MANUAL V1.2...
Page 154 Execute MTK _ ate demo again Choose Calibration INI To select the ini file in this icon (For example:mtkcal_7338_ini.ini) KP220 SERVICE MANUAL V1.2...
Page 155 Choose Con fig File To select the CFG file in this icon (For example:metal_7338.cfg) Choose NVRAM Database file To select the sw database in this icon. KP220 SERVICE MANUAL V1.2...
Page 156 How to setup your test report location Choose my computer Choose “C” disk KP220 SERVICE MANUAL V1.2...
Page 157 Choose “program files” Choose “MTK _ ate demo ”files KP220 SERVICE MANUAL V1.2...
Page 158 Setup new file and leave the window Execute MTK _ ate demo KP220 SERVICE MANUAL V1.2...
Page 159 Press Report & System button Press “select test report location” KP220 SERVICE MANUAL V1.2...
Page 160 Choose your setup report Press “Done” KP220 SERVICE MANUAL V1.2...
Page 161 Setup finish When you finish the setup then you press save change icon. KP220 SERVICE MANUAL V1.2...
Page 162 Press Configuration choose Cal Setting Setting your cable loss KP220 SERVICE MANUAL V1.2...
Page 163 Press Done to save Press Configuration choose Final setting KP220 SERVICE MANUAL V1.2...
Page 164 Choose “MT Call” from Establish Call Type Keyin your test SIM card number form IMSI NUMBER KP220 SERVICE MANUAL V1.2...
Page 165 Press Done and save your setting If you want calibration , you can press “initial calibration” KP220 SERVICE MANUAL V1.2...
Page 166 Press Calibration Test Key-in your phone bar Code Press your phone of power on key and Start calibration KP220 SERVICE MANUAL V1.2...
Page 167 Calibration is ok and will show “PASS” KP220 SERVICE MANUAL V1.2...
Page 168 If you want see test report , you can press “View log file” You can see the test report KP220 SERVICE MANUAL V1.2...
Page 169 If you want final test , you can press “initial final test “ KP220 SERVICE MANUAL V1.2...
Page 170 Press “RF Final test” KP220 SERVICE MANUAL V1.2...
Page 171 1. Handset to insert SIM card 2. Key-in bar code or IMEI number 3. power on handset KP220 SERVICE MANUAL V1.2...
Page 172 ATE start final test KP220 SERVICE MANUAL V1.2...
Page 173 If ATE test finish , ATE will show pass KP220 SERVICE MANUAL V1.2...
Page 174 If you want see the test report , you can press “View Log File” KP220 SERVICE MANUAL V1.2...
Page 175 You can see the test report KP220 SERVICE MANUAL V1.2...
Page 176 If you want initial cal and final test , you can press “initial cal and final test” KP220 SERVICE MANUAL V1.2...
Page 177 Press “Cal & Final” KP220 SERVICE MANUAL V1.2...
Page 178 1.Handset to insert SIM card 2.Key-in bar code or IMEI number 3.Power on handset KP220 SERVICE MANUAL V1.2...
Page 179 Start calibration KP220 SERVICE MANUAL V1.2...
Page 180 Calibration finish and power on handset again KP220 SERVICE MANUAL V1.2...
Page 181 Start final test KP220 SERVICE MANUAL V1.2...
Page 182 Finish “Cal & Final test” KP220 SERVICE MANUAL V1.2...
Page 183 If you want see the report , you can press “View Log File” KP220 SERVICE MANUAL V1.2...
Page 184 Ate show the test report KP220 SERVICE MANUAL V1.2...
Page 185: Software Download Procedure
(3.8 V Li-ion Battery) How to user Leo downlo ad tool tall Le Download tool Choose I accept the terms in the license agreement Type user name / organization. [You could type any anything or just follow it up] KP220 SERVICE MANUAL V1.2...
Page 186 Select defa ult f older Press Install KP220 SERVICE MANUAL V1.2...
Page 187 Press Finish Enable Leo Download tool KP220 SERVICE MANUAL V1.2...
Page 188 Install SW Select COM port (Maybe it will show different COM because of we use different computer) Press Setting and then you will see Multiport Data folder. Change it to the folder which you store the SW. KP220 SERVICE MANUAL V1.2...
Page 189 Select the. PCS file and press open. After few seconds, you will see below screen. Press Yes KP220 SERVICE MANUAL V1.2...
Page 190 After you see the pink cycle, long press power on key and then you will see below picture. After reach to 100%, SW downloads finish. KP220 SERVICE MANUAL V1.2...
Page 191: Circuit Diagrams
Circuit Diagrams Keypad Switches KP220 SERVICE MANUAL V1.2...
Page 192: Key Backlight Illumination
Key Backlight Illumination KP220 SERVICE MANUAL V1.2...
Page 193 LCM Backlight Circuit KP220 SERVICE MANUAL V1.2...
Page 194: Earphone Jack
Earphone Jack KP220 SERVICE MANUAL V1.2...
Page 195 Microphone KP220 SERVICE MANUAL V1.2...
Page 196 Speaker KP220 SERVICE MANUAL V1.2...
Page 197 Receiver FM Receiver KP220 SERVICE MANUAL V1.2...
Page 198: Camera Module
Camera Module KP220 SERVICE MANUAL V1.2...
Page 199 Side Key Switch KP220 SERVICE MANUAL V1.2...
Page 200 Memory KP220 SERVICE MANUAL V1.2...
Page 201 Charger KP220 SERVICE MANUAL V1.2...
Page 202: Sim Card
SIM card KP220 SERVICE MANUAL V1.2...
Page 203 SD card Vibrator KP220 SERVICE MANUAL V1.2...
Page 204 Component place information Key pad board KP220 SERVICE MANUAL V1.2...
Page 205: Main Board
Main board KP220 SERVICE MANUAL V1.2...
Page 206 KP220 SERVICE MANUAL V1.2...
Page 207: Exploded Diagram
EXPLODED DIAGRAM KP220 SERVICE MANUAL V1.2...
Page 208 SMD THIN FILM FUSE_1.250 (1 ？ ) A / 32 F501 0-00016 V_CF06V3T1R25_0603_TA-I TECHNOLOGY_N/A 311-000 I.C LDO_TPS79930YZUR_WCSP_5balls_ U303 0-00378 NoMemory_TI_Vo=3.0V,200mA 310-000 P Channel-MOSFET+Schottky_Si5853DC-T1- U501 0-00024 E3_8pin_1206-8 chip FET_VISHAY_N/A 311-000 I.C LDO_LP2985ITPX-3.3_u'SMD_5 Bump U503 0-00141 Package_NoMemory_NS_3.30V/150mA 311-000 I.C ANALOG SWITCH_FSA5157P6X_SC70_6 U504 0-00499 pin_NoMemory_FAIRCHILD_SPDT KP220 SERVICE MANUAL V1.2...
Page 209 MAIN 415-733 ADHESIVE_7338_NoColor_ADHESIVE_N/A_MAIN LENS LENS 80-0002 TAPE_SIAU CHON(KUNSHAN)_N/A TAPE 8-05-7338 KEYPAD Keypad Board Ass'y_7338_Natural_For 7338 Key Board Ass'y N0-01 415-733 DOME_7338_NoColor_STAINLESS STEEL_N/A_METAL METAL 80-0010 DOME_PRINTEC_Φ=5.0mm,FORCE=160g DOME 404-733 Key_7338_SILVER_PC+Rubber_N/A_ENGLISH_KEYPAD_ KEYPAD 80-0003 MISUNG POLYTECH CO._N/A 313-0000- RECEIVER 00051 KP220 SERVICE MANUAL V1.2...
Page 210 PCB_7338_TRI-BAND_MAIN BOARD Main Board N0-01 327-0000- LCD TFT_Transmissive_128x160 Pixels_1.77 00040 inch_IM177BBNBB_LG INNOTEK_262K color, FPC type MODULE LCM CON 415-733 GASKET_7332_N/A_CONDUCTIVE GASKET_N/A_LCM DUCTIVE 20-0026 CONDUCTIVE GASKET_SIAU CHON(KUNSHAN)_N/A SPONGE 415-733 HOLDER_7338_BLACK_RUBBER、SILICON RUBBER_ CAMERA 80-0009 RUBBER N/A_CAMERA RUBBER CAP_YIDA(KUNSHAN)_N/A KP220 SERVICE MANUAL V1.2...
Page 211 ADAPTOR 00056 P52IF_EN50075_HAN SHIN_FRIWO_18 pin I/O Plug (INDIA) TRAVAL 331-0000- Travel Charger_100~240V_5.10V_700mA_UL;CB_STA- ADAPTOR 00057 P52EF_EN50075_HAN SHIN_FRIWO_18 pin I/O Plug (EU) TRAVAL 331-0000- Travel Charger_100~240V_5.10V_700mA_UL;CB_STA- ADAPTOR 00058 P52WF_NEMA1-15_HAN SHIN_FRIWO_18 pin I/O Plug (US) SGDY0010904_LG-US05K_KSD Co. LTD. CABLE KP220 SERVICE MANUAL V1.2...

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