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VK Corporation VG207, Service Manual

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VK Corporation VG207 Service Manual Download Page 5

 

1. Introduction 

 

VG207

 is a folder type mobile phone with color LCD, operated in the GSM and Digital Cellular Mobile Radio System, which 

is the Pan-European mobile cellular standard.   

 

VG207

 has the operation band of GSM 900 and DCS 1800. GSM PhaseII features are fully supported and parts of the GSM 

Phase II+ features are also supported.   

 

About the SIM Toolkit, 

VG207

 supports up to Class 3 including Class 1, 2. For speech communication, 

VG207

 supports Full 

Rate(FR), Enhanced Full Rate(EFR) and Half Rate(HR). For easy text, eZi Text is implemented and WAP protocol is 

adopted for internet connection. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

Summary of Contents for VG207

Page 1: ...GSM PHONE SERVICE MANUAL MODEL VG207 ...

Page 2: ...ISSUED DATE 2003 08 23 Rev 1 0 ...

Page 3: ...e 4 1 4 1 Data Kit 4 1 4 1 1 Download Equipment 4 1 4 1 2 Download Environment 4 1 4 1 3 Download Procedure 4 5 5 Trouble Shooting 5 1 5 1 Power On Trouble 5 1 5 2 Melody Trouble 5 2 5 3 LCD Trouble 5 3 5 4 Charging Trouble 5 4 5 5 Vibrator Trouble 5 5 5 6 Backlight Trouble 5 6 5 7 SIM Detection Trouble 5 7 5 8 Ear Phone Trouble 5 8 5 9 FLIP Detection Trouble 5 9 5 10 KEY Detection Trouble 5 10 5 ...

Page 4: ...ck 7 3 7 4 Peripheral Block 7 4 7 5 Base Band Block Ulysse Nausica 7 5 7 6 Folder Block 7 6 7 7 Key Pad Block 7 7 7 8 Battery Charger Block 7 8 8 PCB Diagram 8 1 8 1 Main PCB 8 1 8 2 Folder PCB 8 2 8 3 Key Pad PCB 8 3 8 4 Battery Charger PCB 8 4 9 Electrical Part List 9 1 9 1 Main Parts List 9 1 9 2 Folder Parts List 9 2 9 3 Key Pad Parts List 9 3 9 4 Battery Charger Part List 9 4 ...

Page 5: ... operation band of GSM 900 and DCS 1800 GSM PhaseII features are fully supported and parts of the GSM Phase II features are also supported About the SIM Toolkit VG207 supports up to Class 3 including Class 1 2 For speech communication VG207 supports Full Rate FR Enhanced Full Rate EFR and Half Rate HR For easy text eZi Text is implemented and WAP protocol is adopted for internet connection ...

Page 6: ... type Dual LCD Main LCD UFB 65K Color Pixels 128 x 96 Ext LCD Mono B W Pixels 80 x 48 7 Color LED Built in Incoming Indicator x 3 pcs Antenna Fixed type PC synchronization Applied Speech coding FR EFR HR Data Fax Built in Vibrator Built in Speaker Receiver Unified Type Applied 4 pole Portable Handsfree Ear Phone Built in Travel charger Built in Options Cigarette Lighter Adapter Some optional items...

Page 7: ...vices Call barring All calls All outgoing calls All outgoing international calls All outgoing int calls except to home country All incoming calls All incoming calls when roaming Short Message Write message Send Store Output message Send Save Extract Number Delete Delete All Input message Reply Forward Extract number Delete Delete All Status report Delete Delete All Call voicemail Cell broadcast CB...

Page 8: ...w day Make Schedule Call Memo Anniversary Delete View all WAP Built in WAP 1 2 1 World time Setting local time Number of selectable cities 61 Cities Calculator Operator Addition Subtraction Multiplication Division Unit converter Length conversion Weight conversion Volumes conversion Surface conversion Pink schedule Bio Rhythm View with Friend Special day Input My Birthday Friend s Birthday Game 3E...

Page 9: ...k above the battery toward the top of the phone and hold it in the position Lift the battery away 2 Remove the SIM card To do so Slide the ivory lock in the SIM card holder to unlock the SIM card holder and lift it up Remove the SIM card then replace the card holder Keep the SIM card in a safe place ...

Page 10: ...CB Main PCB 3 2 Main Frame 1 Remove the two screws on the back of the phone 2 Insert a small type driver between the front case and the back case and lift up the front case 3 Now you can replace the PCBs and the other components ...

Page 11: ... the back case as described at Steps 1 and 2 under Main Frame Disassembly on page 3 2 2 Unplug the connector shown at right from the main PCB 3 Unhook the folder from the main frame 4 Remove the two screws from the folder ...

Page 12: ...Folder upper Folder lower LCD Ass y 5 Insert a small type driver between the folder upper and the folder lower and lift up the folder upper 6 Now you can remove the LCD ass y and the other components ...

Page 13: ...3 4 Exploded View and Parts List 3 4 1 Exploded View 25 ...

Page 14: ...et 1 8 Rubber Ant jack 1 9 SIM connector 1 10 Main PBA 1 11 Shield Can 1 12 Key PBA 1 13 Key pad 1 14 Side key 1 15 Front case 1 16 Indicator 7 LED 1 17 Magnetic 1 18 LCD Window SUB 1 19 Folder Upper 1 20 LCD module 1 21 Hinge 1 22 Folder Lower 1 23 LCD Window MAIN 1 24 Cover screw 2 25 Receiver Badge 1 S1 Rear Case Screw M1 6 x 5 8 2 S2 Folder Screw M1 6 x 3 4 2 ...

Page 15: ...ing working environments should be prepared VG207 download cable Interface JIG is connected to only COM1 serial port of the desktop or notebook PC VG207 download monitor program is copied to the desktop PC or notebook PC Target software is downloaded to the VG207 mobile phone Warning You MUST use the download cable kit Interface JIG and UART download Monitor program Otherwise downloading process w...

Page 16: ...m monitor701 zip in the PC 2 Execute monitor701 exe And then select Target menu Then choose Connect from the Target menu Figure 1 3 A table will be displayed as shown in Figure 2 Then press the arrow button and choose a correct serial port And press OK button Figure 2 ...

Page 17: ...own in Figure 3 is displayed connect VG207 phone to the download cable Interface JIG and press power on key of VG207 If the connection is succeeded the following screen will show the contents as shown in Figure 4 Figure 3 Figure 4 ...

Page 18: ...n Flash on the top menu and select Erase and Program Appli Boot item as shown in Figure 5 Figure 5 6 Choose the target SW that you want to download And then you can see the following window in Fingure 6 Figure 6 ...

Page 19: ...7 If the downloading procedure is succeeded then the following window is shown Figure 7 8 Press the Disconnect of Target menu and seperate the phone from Download cable Figure 8 ...

Page 20: ...attery The level is higher than 3 65V Check the level of TP516 ON OFF The level is higher 3V Then the phone is powered on properly Check the LCD module END Charge the battery Check the battery Power on sequence is not executed properly Try again If the result is same change U501 chipset YES NO YES NO ...

Page 21: ...ther the melody signal is out from pin 12 14 of U301 Connect the Speaker to the phone properly Check the VBAT level from pin 15 of U301 Replace U301 Check whether the melody signal is out from pin 17 18 of U301 Check the level from pin 7 32 of U301 Level is 2 85V Replace U301 Check the U502 END YES NO NO NO YES YES YES NO Level is 3 0 4 2V NO ...

Page 22: ...n PCB The LCD driver source voltage is 3V J302 PIN14 END LCD connector is well soldered on the PCB Reassemble LCD module with LCD connector Re solder the LCD connector Check the U502 NO YES YES YES NO NO Replace LCD module Check whether the data signal and CS is out from the U501 YES Check the U501 ...

Page 23: ...s are equal to 5 2V 600mA Reassemble battery pack Replace battery pack R407 Voltage is lower than 0 12V J403 is well connected on the PCB Replace R407 Replace one of TA CLA and DTC Re mount J403 Re download S W Voltage is between 0 65 0 9V T403 PIN4 YES NO NO NO NO NO YES YES YES YES YES NO NO NO CASE 1 CASE 2 Re mount J401 J401 connector is well soldered on the PCB NO YES ...

Page 24: ...evel is low Below 1V END T305 collector voltage level is high Approx 3V Replace U307 Replace T305 Replace T304 NO YES YES YES NO NO In the Test mode select Baseband Test then select Vibrator Mode Check Replace Vibrator Note To enter the Test mode press 85 364 on the phone then hold down key ...

Page 25: ... high J302 PIN14 voltage level is high Re solder J302 Replace battery Re solder J302 Replace the LCD module YES NO NO NO YES YES YES YES NO NO NO START Replace D900 D909 Defected LCD backlight In the Test mode select Baseband Test Then LED Test then Backlight ON OFF Note To enter the Test mode press 85 364 on the phone then hold down key YES Voltage level of LED Anode is same as the voltage value ...

Page 26: ...n Trouble SIM Detection is not working Level is 3V or 5V Level is 3V or 5V END Replace U501 Check the voltage level of J402 Pin3 When power ON NO YES YES NO Check the SIM Check the voltage of J402 Pin 1 7 Replace U501 ...

Page 27: ...is not working Below 10Ω A few hundreds mV of signal level are measured END Replace that Connect the phone to Wireless communication Test set NO YES YES YES NO Check the ear phone Check each Resistance value of F301 F302 Replace U502 ...

Page 28: ... not working Level is 2 85V Folder open state 2 75V Folder close state 0V END Check the connectivity of J900 Check the voltage of RD900 Pin 2 NO YES YES NO Check the connectivity of J900 Check the voltage of RD900 Pin 1 Replace RD900 Replace U501 ...

Page 29: ...5 10 KEY Detection Trouble Key Detection is not working Connectivity is ok END Connect it again Replace KEY PCB NO YES Check the connectivity of J404 and J900 ...

Page 30: ... the solder state of R323 R303 Blue R324 R328 Green R322 R330 Orange is ok Replace 7 LED of Folder NO YES Check the connectivity of J302 T301 T302 T306 Pin 5 voltage is high Approx 2 75V T301 T302 T306 Pin 4 voltage is high Approx 0 6V YES Replace T301 T302 T306 ...

Page 31: ... 60dBm setting BCCH Spectrum analyzer as shown in Remarks Oscilloscope as shown in Remarks Check U201 soldering U201 pin 11 17 24 DC 3 0V Replace U201 if defective NO Remarks 1 Call connection TEM3 execution ti Enter tms 1 Enter txpw 1 7 Enter rfe 7 Enter 2 Spectrum analyzer SPAN 1MHz VBW 1MHz RBW 3MHz Press the trace button of spectrum analyzer on checking test point and press the max hold of spe...

Page 32: ...tage Replace U205 if defective Check U103 U101 U106 soldering U103 pin 1 7 11 VBAT DC voltage 3 3V U106 pin 10 VBAT DC voltage 3 3V U106 pin 2 PAON high voltage U106 pin 5 BSW low voltage U106 pin 3 PA_LEVEL signal U106 pin 1 902 4MHz freq power U106 Pin 7 OUT2 signal U101 Pin 7 902 4MHz freq Power Replace U103 U101 U106 if defective Check U102 soldering U102 pin 10 high voltage U102 pin 7 low vol...

Page 33: ...defective NO YES YES YES NO NO Check 2 st LO VCO U201 pin 23 frequency power Freuency 543 0MHz Power 14dBm Set Phone Test mode 700CH 2level TCH 700CH 60dBm BCCH Spectrum analyzer as shown in Remarks Oscilloscope as shown in Remarks Check U201 soldering U201 pin 11 17 24 DC 3 0 V Replace U201 if defective NO Remarks 1 Call connection TEM3 execution ti Enter tms 1 Enter txpw 1 102 Enter rfpw 1 700 E...

Page 34: ... voltage Replace U205 if defective Check U103 U101 U106 soldering U103 pin 1 7 11 VBAT DC voltage 3 3V U106 pin 10 VBAT DC voltage 3 3V U106 pin 2 PAON high voltage U106 pin 5 BSW high voltage U106 pin 3 PA_LEVEL signal U106 1 1747 8 MHz freq power U106 pin 9 OUT1 signal U101 pin 5 1747 8 MHz freq power Replace U103 U101 U106 if defective Check U102 soldering U102 pin 1 low voltage U102 pin 7 high...

Page 35: ...e Check BPF5 soldering Replace BPF5 if defective NO YES YES YES NO NO Check RF Mainchip U203 pin 27 frequency power Freuency 947 4MHz Power 60dBm Set Phone Test mode 62CH 7level TCH 62CH 60dBm BCCH Spectrum analyzer as shown in Remarks Oscilloscope as shown in Remarks Check U203 soldering Replace U203 if defective NO Remarks 1 Call connection TEM3 execution ti Enter tms 1 Enter txpw 1 7 Enter rfe ...

Page 36: ...4 0MHz Power 16dBm NO YES YES NO NO YES Check U200 soldering U200 pin 4 DC 3 0V 5 U200 pin 3 DC 1 4V 0 1V Replace U200 if defective Check U201 soldering U201 pin 11 17 24 DC 3 0V Replace U201 if defective Check U203 soldering Replace U203 if defective Check U201 soldering U201 pin 11 17 24 DC 3 0V Replace U201 if defective Check U203 Pin soldering Ulyses Nausca S W YES Check GSM RF SAW 2 nd FILTER...

Page 37: ...ing Replace BPF4 if defective NO YES YES YES NO NO Check RF Mainchip U203 pin 28 frequency power Freuency 1842 8MHz Power 62dBm Set Phone Test mode 700CH 7lovel TCH Spectrum analyzer as shown in Remarks Oscilloscope as shown in Remarks Check U203 soldering Replace U203 if defective NO Remarks 1 Call connection TEM3 execution ti Enter tms 1 Enter txpw 1 102 Enter rfpw 1 700 Enter rfpw 1 700 Enter r...

Page 38: ...ignal DC 0 9V 0 3Vp p Check 2 st LO VCO U201 pin 23 frequency power Frequency 564 0MHz Power 17dBm NO YES YES NO NO YES Check U200 soldering U200 pin 4 DC 3 0V 5 U200 pin 3 DC 1 4V 0 1V Replace U200 if defective Check U201 soldering U201 pin 11 17 24 DC 3 0V Replace U201 if defective Check U203 soldering Replace U203 if defective Check U201 soldering U201 pin 11 17 24 DC 3 0V Replace U201 if defec...

Page 39: ...sert Battery Normal working CON2 Battery no contact Battery badness TH1 badness U2 abnormal working U2 abnormal working or badness Battery badness No power supply to LED1 LED RED In 270minutes change to LED Green Yellow turn on off LED LED Yellow normal temp LED RED Yellow turn on YES YES YES YES NO NO NO ...

Page 40: ...Memo ...

Page 41: ...MAIN TXIN TXIP RXQP RXIP RXIN TXQN TXQP RXQN VBAT EN VR2B V2 GSM_OUT 13MHZ V1 DCS_OUT RF3V0 SYN_EN AFC CLK DATA RF_ENA XO_ENA RX_1800 RX_900 BSW RADIO_TEMP Hitachi PA 100 RF PAM BSW RX_1800 RX_900 VBAT RF3V0 GSM_OUT DCS_OUT PA_ON PA_LEVEL Peripheral 400 Peripheral SIM_VDD DSR PCHG MICIN MICIP RPWON RTS WR VBAT RXD MICBIAS DEBUG_TX TDO DEBUG_RX SIM_CLK TDI CTS TXD VCHG VBAT_2 ICTL END_ON OFF Flip k...

Page 42: ...6 Block Diagram 6 1 BB Block Diagram 6 1 ...

Page 43: ...6 2 Block Diagram 6 2 RF Block Diagram ...

Page 44: ...7 Schematic 7 1 RF PAM Block 7 1 ...

Page 45: ...7 2 Schematic Diagram 7 2 RF Main Block ...

Page 46: ...7 3 Schematic Diagram 7 3 Flash Audio Block ...

Page 47: ...7 4 Schematic Diagram 7 4 Peripheral Block ...

Page 48: ...7 5 Schematic Diagram 7 5 Base Band Block ...

Page 49: ...7 6 Schematic Diagram 7 6 Folder Block ...

Page 50: ...7 7 Schematic Diagram 7 7 Key Pad Block ...

Page 51: ...7 8 Schematic Diagram 7 8 Battery Charger Block ...

Page 52: ...8 PCB Diagram 8 1 Main PCB 8 1 TOP ViIEW COMP ...

Page 53: ...8 2 PCB Diagram BOTTOM VIEW COMP ...

Page 54: ...8 3 PCB Diagram 8 2 Folder PCB TOP VIEW COMP ...

Page 55: ...8 4 PCB Diagram BOTTOM VIEW COMP ...

Page 56: ...8 5 PCB Diagram 8 3 Key Pad PCB TOP VIEW COMP ...

Page 57: ...8 6 PCB Diagram BOTTOM VIEW COMP ...

Page 58: ...8 7 PCB Diagram 8 4 Battery Charger PCB TOP VIEW COMP ...

Page 59: ...8 8 PCB Diagram BOTTOM VIEW COMP ...

Page 60: ... R404 R416 R417 R503 R505 R506 R514 5310421 RES 1005 100K ohm J MCR01MZSJ104 R307 R326 5310521 RES 1005 1M ohm J MCR01MZSJ105 R510 5312421 RES 1005 120K ohm J MCR01MZSJ124 R507 5313321 RES 1005 13K ohm J MCR01MZSJ133 R305 5315121 RES 1005 150 ohm J MCR01MZSJ151 R212 5318021 RES 1005 18 ohm J MCR01MZSJ180 R100 R103 5318121 RES 1005 180 ohm J MCR01MZSJ181 R217 R218 5320021 RES 1005 20 ohm J MCR01MZS...

Page 61: ... J MCR01MZSJ620 R108 R110 5368121 RES 1005 680 ohm J MCR01MZSJ681 R253 5410011 RES ARRAY 10ohm MNR04M0ABJ100 R410 R411 R412 5410311 RES ARRAY 10K ohm MNR04MOABJ103 R408 11222121 IND 1608 220NH HK1608 R22J T L204 11301011 IND 1005 1NH AML1005H1N0ST L219 11301511 IND 1005 1 5NH AML1005H1N5ST L220 11301811 IND 1005 1 8NH AML1005H1N8ST L105 11302711 IND 1005 2 7NH AML1005H2N7ST L221 11303311 IND 1005 ...

Page 62: ...HR50CZ01E C250 15300681 CAP 1005 0 68pF C GRP1555C1HR68CZ01E C242 15301021 CAP 1005 1pF C GRP1555C1H1R0CZ01E C118 15301221 CAP 1005 1 2pF C GRP1555C1H1R2CZ01E C236 15301521 CAP 1005 1 5pF C GRP1555C1H1R5CZ01E C235 15302021 CAP 1005 2pF C GRP1555C1H2R0CZ01E C237 C240 15302221 CAP 1005 2 2pF C GRP1555C1H2R2CZ01E C241 15305621 CAP 1005 5 6pF C GRP1555C1H5R6CZ01E C116 15306031 CAP 1005 6pF D GRP1555C1...

Page 63: ... C409 15327041 CAP 1005 27pF J GRP1555C1H270JZ01E C219 C231 15333041 CAP 1005 33pF J GRP1555C1H330JZ01E C316 15333351 CAP 1005 33N K GRP155R71A333KA01E C522 15339041 CAP 1005 39pF J GRP1555C1H390JZ01E C310 15347041 CAP 1005 47pF J GRP1555C1H470JZ01E C102 C108 C314 C318 C320 C405 C517 C518 C519 C520 15347151 CAP 1005 470pF K GRP155R71H471KA01E C309 15356041 CAP 1005 56p J GRP1555CC1H560JD01E C117 2...

Page 64: ...705DN T403 31500261 FET TZMC8V2 D401 34100011 DIODE DAN222TL D301 34100081 DIODE MA2J70400L D501 34200020 THERMISTOR NSM4223J380H3R R255 35350021 VARISTOR 1005 HIGH AVLC5S02050 50PF V301 V302 V303 V304 V305 V306 V307 V401 V402 V403 V404 V405 V406 V407 V408 V409 V410 V411 V412 V413 V414 V415 V416 V417 V501 V418 V419 V420 V421 V422 V423 V424 V425 V426 V427 V428 V429 V430 40232711 X TAL 32 768KHz CC5...

Page 65: ...4SF J402 54100081 I O CONNECTOR 18Pin 1010 0018 301 J401 54100321 B2B CON 34Pin AXK834145YJ J302 54100271 BATTERY CONNECTOR AGK3434 J403 54900011 EAR JACK 02 828D0 53BKA J301 58000031 BACK UP BATTERY MS614F FL28N BAT501 70600811 SPACER SHEET NOMEX 0 25T 3M467 VKP130004000 CONTACT ANT 인청동 T0 2 금도금 VKPCB200M05B VG200 PCB MAIN FR 4 8L VK9370017000 LABEL SUBMERGENCE 4 7 ...

Page 66: ...982 C1 220NF 80 20 16V Y5V 1005 2203 005493 C2 6 1UF 20 16V X5R 1610 2203 006108 C7 C10 C27 100NF 80 20 16V Y5V TP 1005 2203 005061 C13 C28 C29 2 2UF 80 20 50V Y5V TP 2012 2203 001596 C26 LT1937 TSOT 23 5P 2 9X1 62MM PLAST 1203 002633 IC1 22UH 10 3 2X2 5X1 55MM 2703 002339 L2 2SK3019 N 30V 100MA 130HM 150W 0505 001325 TR3 UDZTE 17 16V 0403 001446 ZD1 RB551V 30 30V 500MA SOD 323 TP 0404 001089 ZD2 ...

Page 67: ...IC CHIP 0 1 uF 100N GRM36Y5V 104Z 16PN C903 15215041 CAP CERAMIC CHIP 15 pF 1608 GRM39C0G 150J 50 C900 C901 C902 5330021 RES 1005 30 ohm J MCR01MZSJ300 R902 R903 R904 5310221 RES 1005 1K ohm J MCR01MZSJ102 R900 5347321 RES CHIP 47 Kohm 5 J 1 16W 1005 0402 MCR01MZSJ473 R905 5310421 RES 1005 100K ohm J MCR01MZSJ104 R901 34100011 DIODE DAN222TL D910 59100021 PCB key V5 0 151 80 2 3array 59100031 SIDE...

Page 68: ...AGK 3370 CON2 RECTIFIER DIODE 1N4007 1000V 1A 1N4007 D1 LED DUAL COLOR Vr 4V 85mW 1fp 50mA HDL 51RG LED1 DOUBLE FR 4 t 1 2 PCB MAIN PCB MAIN DOUBLE FR 4 t 1 2 PCB SUB PCB SUB CONNECTION PIN 2 PIN PII03 115 02A PIN HEADER TR PNP TO 92 500mA 625mW 2SC1277 AT Q1 Q2 TR NPN SOT 23 150mA 150mW 2SC5343SF Y Q3 Q4 CHIP RESISTOR 1608 20Kohm J RC0603JR 07 20K R1 CHIP RESISTOR 1608 330Kohm J RC0603JR 07 330R ...

Page 69: ...R 1608 82Kohm F RC1206FR 07 82K R20 CHIP RESISTOR 1608 33Kohm J RC0603JR 07 33K R21 CHIP RESISTOR 1608 10Kohm F RC1206FR 07 10K R22 CHIP RESISTOR 2012 15ohm J RC0603JR 07 15R R23 CHIP RESISTOR 1608 1 2Kohm F RC1206FR 07 1K2 R24 CHIP RESISTOR 1608 1 5Kohm F RC1206FR 07 1K5 R25 CHIP RESISTOR 1608 220ohm J RC0603JR 07 22OR R26 CHIP RESISTOR 1608 330Kohm J RC0603JR 07 330R R27 CHIP RESISTOR 1608 33Koh...

Page 70: ...Memo ...

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