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FLY VK3100 Service Manual Download Page 58

VK Quality Group GSM C/S

1.

Power-On Trouble

2.

Melody Trouble

3.

LCD Trouble

4.

Charging Trouble

5.

Vibrator Trouble

6.

Backlight Trouble

7.

SIM Detection Trouble

8.

Ear-Microphone Trouble

9.

9.

KEY Detection Trouble

KEY Detection Trouble

CHAPTER 7. 

CHAPTER 7. 

TROUBLE SHOOTING

TROUBLE SHOOTING

1.

1.

Power

Power

-

-

On Trouble

On Trouble

2.

2.

Buzzer Trouble

Buzzer Trouble

3.

3.

LCD Trouble

LCD Trouble

4.

4.

Charging Trouble

Charging Trouble

5.

5.

Vibrator Trouble

Vibrator Trouble

6.

6.

Backlight Trouble

Backlight Trouble

7.

7.

SIM Detection Trouble

SIM Detection Trouble

8.

8.

Ear

Ear

-

-

Microphone Trouble

Microphone Trouble

Summary of Contents for VK3100

Page 1: ...VK Quality Group GSM C S GSM GSM SERVICE MANUAL SERVICE MANUAL VK3100 VK3100...

Page 2: ...k twisted pair wire could reduce the measurement error as the wire contains less RF resistance When disassembling the phone set you must use a driver tool meeting standard requirements When making rep...

Page 3: ...ble of Contents Chapter 1 Overview Features Chapter 2 Appearance Configuration Chapter 3 Assembling Disassembling Methods Chapter 4 Block Diagram Chapter 5 Schematic Chapter 6 PCB Diagram Chapter 7 Tr...

Page 4: ...VK Quality Group GSM C S CHAPTER 1 CHAPTER 1 OVERVIEW FEATURES OVERVIEW FEATURES 1 1 Overview Overview 2 2 Features Features 3 3 Standard Standard...

Page 5: ...0 GSM Phase II features are fully supported and parts of PCS 1900 GSM Phase II features are fully supported and parts of the GSM Phase II the GSM Phase II features are also supported features are also...

Page 6: ...IDI sp MIDI MP3 Ringtones Yes 64poly MIDI MP3 MP3 playback Yes Voice support codec AMR TBD SMS EMS MMS Yes WAP 2 Java MIDP2 0 CLDC1 1 Instant Massage N A e mail N A Nor SRAM 128 Mb 64 Mb Nand 512Gb Ex...

Page 7: ...Edit Subject MMS only Preview MMS only Exit Add Contact Edit Email MMS only Outbox unsent items sent items Send Edit Delete Delete All Copy to SIM Phone SMS only Move to SIM Phone SMS only Details MM...

Page 8: ...GPRS Built in Class 10 New Delete All Schedule List Morning Call Reminder Memo Edit and view 10 Memos Addition Subtraction Multiplication Division Length conversion Weight conversion Volumes conversi...

Page 9: ...z TQ7M4006 200KHz 9 RF1 Local Oscillation Frequency GSM850 1737 8 1787 8MHz EGSM 1849 8 1919 8MHz DCS 1804 9 1879 9MHz PCS 1929 9 1989 9MHz 2 Frequency Range PLLSynthesize GMSK 6 Frequency Stability G...

Page 10: ...VK Quality Group GSM C S CHAPTER 2 CHAPTER 2 APPEARANCE CONFIGURATION APPEARANCE CONFIGURATION 1 1 Appearance Appearance 2 2 Configuration Configuration 3 3 LCD Panel LCD Panel...

Page 11: ...VK Quality Group GSM C S Appearance Appearance...

Page 12: ...VK Quality Group GSM C S Icons Icons...

Page 13: ...VK Quality Group GSM C S Icons Icons...

Page 14: ...VK Quality Group GSM C S Icons Icons...

Page 15: ...VK Quality Group GSM C S LCD Panel LCD Panel...

Page 16: ...VK Quality Group GSM C S CHAPTER 3 CHAPTER 3 ASSEMBLING DISASSEMBLING ASSEMBLING DISASSEMBLING 1 1 Assembly Drawings Assembly Drawings 2 2 Disassembling Methods Disassembling Methods...

Page 17: ...VK Quality Group GSM C S 1 Assembly Drawings 1 Assembly Drawings 1 1 Exploded Exploded Ass Ass y y View View 2 2 Mechanical Parts List Mechanical Parts List 3 3 Ass Ass y y View View...

Page 18: ...1 10 Magnet 1 11 Folder Lower 1 12 Hinge 1 13 Window Main 1 14 Deco Ear 1 15 Screw 8 16 Rubber Screw Folder 1 17 Rubber Stopper 1 18 Rubber Damper 1 19 Metal Keypad 1 20 Rubber Screw Main 5 21 Case Fr...

Page 19: ...VK Quality Group GSM C S Ass Ass y y View View Folder Front Ass y Folder Front Folder Front Ass Ass y y...

Page 20: ...VK Quality Group GSM C S Ass Ass y y View View Folder Lower Ass y Folder Lower Folder Lower Ass Ass y y...

Page 21: ...VK Quality Group GSM C S Ass Ass y y View View Front Case Ass y Front Case Front Case Ass Ass y y...

Page 22: ...VK Quality Group GSM C S Ass Ass y y View View Rear Case Ass y Rear Case Rear Case Ass Ass y y...

Page 23: ...mbling Methods 2 Disassembling Methods 1 1 Tools Tools 2 2 Rear Case Disassembling Rear Case Disassembling 3 3 Main PCB Disassembling Main PCB Disassembling 4 4 Folder Disassembling Folder Disassembli...

Page 24: ...ing tools are as below 1 Star shaped Screw Driver 2 Hinge Remover 3 Tweezers 4 Cross tip Screw Driver 1 2 3 4 In disassembling the VK Mobile Phone set you must use tools meeting standard specification...

Page 25: ...VK Quality Group GSM C S Rear Case Disassembling Rear Case Disassembling...

Page 26: ...ality Group GSM C S Screws Screws Unscrew four screws on the back of the phone 1 Turn the screws anticlockwise using cross shaped screwdriver 2 Use a screwdriver meeting standard specifications to uns...

Page 27: ...VK Quality Group GSM C S Main PCB Disassembling Main PCB Disassembling...

Page 28: ...oup GSM C S Main PCB Disassembling Main PCB Disassembling 1 1 Take off Shielder protect tape with Pin set 2 Unconnect Inter antenna cable 3 Take off Intenna Exerting excessive force could damage the r...

Page 29: ...VK Quality Group GSM C S Main PCB Disassembling Main PCB Disassembling 1 2 3 1 Cut FPCB Protect tape With cutting tool 2 Take off FPCB Protect tape 3 Unconnect FPCB Cable from the connector...

Page 30: ...VK Quality Group GSM C S Main PCB Disassembling Main PCB Disassembling 1 2 3 1 Take off intenna 2 Take out EL Sheet...

Page 31: ...VK Quality Group GSM C S Folder Disassembling Folder Disassembling...

Page 32: ...VK Quality Group GSM C S Folder Disassembling Folder Disassembling 1 Grab the Folder with one hand then separate folder with case slightly 2 Take off the rubber with pin set for folder removal...

Page 33: ...VK Quality Group GSM C S Folder Disassembling Folder Disassembling 1 Take off the Deco 2 Push out hinge with hinge remover...

Page 34: ...VK Quality Group GSM C S Folder Disassembling Folder Disassembling 1 Widen a space to make a gap using thumb nail 2 Separate the folder upper slowly...

Page 35: ...VK Quality Group GSM C S Folder Disassembling Folder Disassembling 1 Take off vibrator with Pin set 2 Unconnect FPCB from the connector...

Page 36: ...VK Quality Group GSM C S Folder Disassembling Folder Disassembling 1 Take out LCD Module with the other hand 2 Take out Camera module with pin set...

Page 37: ...VK Quality Group GSM C S Exploded View Exploded View Front case Front case Ass Ass y y Metal dome switch Front Total ASS Y Case Battery LCD 1 2 3 4 1 2 3 4 5 6 Knob side switch 5 Intenna 6...

Page 38: ...VK Quality Group GSM C S Exploded View Exploded View Rear case Rear case Ass Ass y y 1 2 3 4 5 Intenna cable Rear case Speaker Camera module 1 2 3 4 Speaker 5...

Page 39: ...VK Quality Group GSM C S CHAPTER 4 CHAPTER 4 BLOCK DIAGRAM BLOCK DIAGRAM 1 1 RF Block Diagram RF Block Diagram 2 2 BASEBAND Block Diagram BASEBAND Block Diagram...

Page 40: ...VK Quality Group GSM C S RF Block Diagram RF Block Diagram...

Page 41: ...VK Quality Group GSM C S BASEBAND Block Diagram BASEBAND Block Diagram...

Page 42: ...k 4 4 NAND Block NAND Block 5 5 Peripheral Key Block Peripheral Key Block 6 6 Power Mgmt Block Power Mgmt Block 7 7 RF Block RF Block 8 8 Audio Video Block Audio Video Block 9 9 Bluetooth Block Blueto...

Page 43: ...VK Quality Group GSM C S Overall Structure Overall Structure...

Page 44: ...VK Quality Group GSM C S Base Band Block Base Band Block...

Page 45: ...VK Quality Group GSM C S MCP Main MCP Main...

Page 46: ...VK Quality Group GSM C S NAND Block NAND Block...

Page 47: ...VK Quality Group GSM C S Peripheral Block Peripheral Block...

Page 48: ...VK Quality Group GSM C S Power Management Black Power Management Black...

Page 49: ...VK Quality Group GSM C S RF Block RF Block...

Page 50: ...VK Quality Group GSM C S Audio Video Block Audio Video Block...

Page 51: ...VK Quality Group GSM C S Bluetooth Block Bluetooth Block...

Page 52: ...VK Quality Group GSM C S Folder Block Folder Block...

Page 53: ...VK Quality Group GSM C S Keypad Block Keypad Block...

Page 54: ...VK Quality Group GSM C S CHAPTER 6 CHAPTER 6 PCB DIAGRAM PCB DIAGRAM 1 1 Main PCB Main PCB 2 2 RF Area RF Area 3 3 BASEBAND Area BASEBAND Area...

Page 55: ...VK Quality Group GSM C S Main PCB Main PCB Top Top Bottom Bottom...

Page 56: ...VK Quality Group GSM C S RF Area RF Area...

Page 57: ...VK Quality Group GSM C S BASEBAND Area BASEBAND Area...

Page 58: ...Trouble KEY Detection Trouble CHAPTER 7 CHAPTER 7 TROUBLE SHOOTING TROUBLE SHOOTING 1 1 Power Power On Trouble On Trouble 2 2 Buzzer Trouble Buzzer Trouble 3 3 LCD Trouble LCD Trouble 4 4 Charging Tr...

Page 59: ...ge is higher Than 3 4V When press power button then V_CORE or other power alright Charge the battery Check the battery NO Check PMIC NO YES YES CLK 13M CLK 32K is alright When boot phone can you hear...

Page 60: ...GSM C S Melody Trouble Melody Trouble START END N O N O YE S YE S YES Check the melody Signal is output from 25 26pin of U702 Connection with LCM is alright Reassemble of LCM Check Melody IC Replace...

Page 61: ...T E N D N O N O N O N O N O Y E S Y E S Y E S Y E S Y E S Y E S N O Test Mod e LCD CON Conn ected Reass emble LCM CON LCD CON Well Solder Resol derin g Replac e CON Replac e FPCB FP CB alri gnt Folder...

Page 62: ...Charging is Not networkin g When CHG_IN 5V then Q501 3pin is HIGH When Q501 3pin Is High then Q501 1 2 5 6pin is High The battery Voltage is between 3 4V 4 2V When Q504 1pin Is High then Q501 3pin is...

Page 63: ...VK Quality Group GSM C S Vibrator Trouble Vibrator Trouble START END Manner Mode Vibrator Well Solder Reassemble Vibrator R430 High Replace Vibrator Check U502 NO N O YES YES...

Page 64: ...TART START KEY_EL LCD_BL J701 Well Soldering FPCB Assemble OK KEY_EL LOW Main LCD_BL J702 27pin HIGH Folder U9 1 pin HIGH ReworkJ701 Check U201 Replace EL_KEY_FPCB Reassemble FPCB Check V250G Check Fo...

Page 65: ...uble START START T Flash Card OK T Flash Con J403 Well Solder T Flash Con 3 3V OK T Flash Control DATA signal OK Replace T Flash Card Resoldering J403 Check 3 3V LDO U404 Replace T Flash Con END END N...

Page 66: ...IM Detection Trouble START SIM all right SIM Con J403 Well Solder SIM Power all Right J403 Pin11 14 SIM Clock I O all right Change SIM Card Rework SIM Con J403 Check U502 Replace SIM Con END NO NO YES...

Page 67: ...SM C S Ear Ear Microphone Trouble Microphone Trouble START Headset Detect Possible HS_DET alright V408 Output of sound Waveform form U702 Check Headset and V250G Check Headset and Earphone END YES NO...

Page 68: ...Flip Detection Trouble Flip Detection Trouble START EL_FPCB U101 Well Solder U101 Pin1 2 8V EL_FPCB rework U101 Check V250G END YES NO Check U502 NO YES Flip Key Near Magnetic U101 pin2 Any change EL_...

Page 69: ...ity Group GSM C S Key Detection Trouble Key Detection Trouble START KEY Dome Switch all Right ARR201 ARR202 All right Replace Dome Switch Check U201 END YES NO Rework array Resister NO YES KEY Detect...

Page 70: ...M Check Camera Module END Reassemble Camera module with Camera connector is located in the Low position Camera connector is Well soldered to the LCM PCB When Camera Active the Camera driver source Vol...

Page 71: ...11 12 13 DC 2 8V 5 Replace U603 if defective NO YES YES YES NO NO Set Phone Test mode 62CH 7level setting TCH 62CH 60dBm setting BCCH Spectrum analyzer as shown in Remarks Oscilloscope as shown in Rem...

Page 72: ...Frequency Power Frequency 902 4 MHz Power 26 32dBm Check U602 soldering U602 pin 5 VBATT DC voltage 3 3V U602 pin 4 TX_EN 1 8V High U602 pin 3 VC1 0 5V Low U602 pin 6 TX Power 0 2V Replace U602 if de...

Page 73: ...VK Quality Group GSM C S RX Sensitivity Trouble E RX Sensitivity Trouble E GSM GSM...

Page 74: ...VK Quality Group GSM C S RX Sensitivity Trouble E RX Sensitivity Trouble E GSM GSM...

Page 75: ...Group GSM C S APPENDIX APPENDIX ELECTRICAL PARTS LIST ELECTRICAL PARTS LIST 1 1 Main Parts List Main Parts List 2 2 Folder Parts List Folder Parts List 3 3 Battery Charger Parts List Battery Charger...

Page 76: ...00 2 BD701 BD801 CAP_1005 0 5pF 0 25 COG DC50V GRM1555C1HR50CZ0 1D 1 C814 CAP_1005 1nF 10 X7R DC50V GRM155R71H102KA0 1D 2 C219 C716 CAP_1005 10nF 10 X7R DC16V GRM155R71C103KA0 1D 04022R103K7B 4 C508 C...

Page 77: ...7 C628 C629 C 631 C633 CAP_1005 1 5pF 0 25 COG DC50V GRM1555C1H1R5CZ01 D 0402CG159C9B 2 C632 C634 CAP_1005 22nF 10 X7R DC16V GRM155R71C223KA01D 04022R223K7B 1 C709 C201 C203 C205 C207 C 213 C215 C220...

Page 78: ...P_1005 680pF 10 X7R DC50V GRM155R71H681KA01D 2 C606 C613 C416 C418 C501 C 532 C603 C750 CAP_1608 10uF 20 X5R DC6 3V GRM188R60J106ME47D 5 C509 C604 C755 C 756 C757 C503 C511 C512 C 514 C516 C517 C518 C...

Page 79: ...20 DC10V F881A475MMA 4 C714 C744 C746 C820 CAP_TAN 2010CC 10uF 20 DC10V F951A106MPAAQ2 1 C401 CAP_TAN 3427 100uF 20 DC6 3V F950J107MTAAQ2 1 C625 DIODE RB520S 30TE61 2 D501 D502 DCXO CXC5X26 26MHz VK31...

Page 80: ...P PF38F3050L0YBQ2 128 64 VK1500 1 U301 IC_LDO R1114Q281D 2 8V 1 U807 IC_LDO R1114Q331D 3 3V VK1100 1 U404 IC_LDO R1141Q181D 1 8V 1 U501 IC_RF TRANSCEIVER SI4210 VK2000 1 U603 IC_AUDIO FILTER SUY98001F...

Page 81: ...509 R511 R524 R616 R61 8 R626 R641 R642 R728 R74 8 R752 R756 R766 R767 R76 8 R802 R803 R804 R805 R83 5 R836 R841 RES_1005 100 ohm 5 MCR01MZPJ101 0402J101 VG200 4 R221 R223 R464 R465 RES_1005 1K ohm 5...

Page 82: ...610 R614 RES_1005 20 ohm 5 MCR01MZPJ200 VG200 2 R471 R472 RES_1005 2 2K ohm 5 MCR01MZPJ222 0402J222 VG200 2 R419 R440 RES_1005 27K ohm 1 MCR01MZPF2702 1 R501 RES_1005 270K ohm 5 MCR01MZPJ274 VG200 2 R...

Page 83: ...J000 1 R403 RES_1608 20 ohm 5 MCR03EZPJ200 RC0603JR 0720RL VK3100 1 R513 RES_4 ARRAY 100 ohm 5 MNR04M0ABJ101 VK800 2 ARR201 ARR202 RES_4 ARRAY 10K ohm 5 MNR04M0ABJ103 VG200 1 ARR401 SWITCH_CURRENT LIM...

Page 84: ...01 BLUETOOTH ANTENNA RCA2450P52 VK3100 1 ANT801 SHIELD CAN A 16GND T 0 15 VK3100 1 SHIELD CAN B 17GND T 0 15 VK3100 1 SHIELD CAN C T 0 15 VK3100 1 GASKET SHIELD CAN A 28X14 CONDUCTIVE TAPE T 0 3 VK310...

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