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VK VK4500 Service Manual

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GSM
GSM
SERVICE MANUAL
SERVICE MANUAL
VK4500
VK4500
VK Quality Group GSM C/S

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Summary of Contents for VK VK4500

  • Page 1 SERVICE MANUAL SERVICE MANUAL VK4500 VK4500 VK Quality Group GSM C/S...
  • Page 2 • Note that PCB land may be detached due to overheating of a soldering iron while making repairs on board status. • Any additional devices that cause the change of performance shall not be added to this phone, as registered. VK Quality Group GSM C/S...

  • Page 3: Table Of Contents

    Chapter 1. Overview & Features Chapter 2. APPEARANCE & CONFIGURATION APPEARANCE & CONFIGURATION Chapter 3. Assembling & Disassembling Methods Chapter 4. Block Diagram Chapter 5. Schematic Chapter 6. PCB Diagram Chapter 7. Trouble Shooting Appendix. Electrical Part List VK Quality Group GSM C/S...

  • Page 4: Chapter 1. Overview & Features

    CHAPTER 1. CHAPTER 1. OVERVIEW & FEATURES OVERVIEW & FEATURES Overview Overview Features Features Standard Standard VK Quality Group GSM C/S...
  • Page 5 VK 4500 Mobile Phone has the operation band of GSM 900, DCS 1800 VK 4500 Mobile Phone has the operation band of GSM 900, DCS 1800 GSM 850, PCS 1900. GSM Phase II features are fully supported and parts of GSM 850, PCS 1900.
  • Page 6 Battery Charger Video MPEG4 PC – Sync H.263 H.264 Video output Audio Sound format MIDI, sp-MIDI, MP3, AAC Ringtones Yes (64poly MIDI, MP3) MP3 playback Voice support codec AMR (T BD) Data Service SMS/EMS/MMS Java MIDP2.0/CLDC1.1 VK Quality Group GSM C/S...
  • Page 7 Topics(Edit/Delete) Voice message Listen to Voice Mail/Set Voice Mail Number Memory status SMS SIM/PHONE(Number), MMS(%) Settings delivery report, read report(MMS only), report sending(MMS only), profile setting(MMS only), auto download(MMS only) Validity period/SMS center No.(SMS only) VK Quality Group GSM C/S...
  • Page 8 Surface convers ion Temperature convers ion World time Setting local time Number of s electable cities 65 Cities Player Edit Play Lis t Option (Repeat, Shuffle) SIM Card Releas e Releas e 96 Refres h VK Quality Group GSM C/S...
  • Page 9 PCS = 1929.9 ~ 1989.9MHz 10) IF VCO Frequency: GSM850 = 896MHz EGSM = 798MHz DCS = 766MHz PCS = 854 MHz 11) Multiplying Method: Frequency Multiplying 12) Spurious 1G~4G(-30dBm or below from the FTA standard) VK Quality Group GSM C/S...

  • Page 10: Appearance & Configuration

    CHAPTER 2. CHAPTER 2. APPEARANCE & CONFIGURATION APPEARANCE & CONFIGURATION Appearance Appearance Configuration Configuration LCD Panel LCD Panel VK Quality Group GSM C/S...
  • Page 11 ☞ ☞ Appearance Appearance VK Quality Group GSM C/S...
  • Page 12 ☞ ☞ Icons Icons VK Quality Group GSM C/S...
  • Page 13 ☞ ☞ Icons Icons VK Quality Group GSM C/S...
  • Page 14 ☞ ☞ Icons Icons VK Quality Group GSM C/S...
  • Page 15 ☞ ☞ LCD Panel LCD Panel VK Quality Group GSM C/S...
  • Page 16 CHAPTER 3. CHAPTER 3. ASSEMBLING & DISASSEMBLING ASSEMBLING & DISASSEMBLING Assembly Drawings Assembly Drawings Disassembling Methods Disassembling Methods VK Quality Group GSM C/S...
  • Page 17 1. Assembly Drawings 1. Assembly Drawings Exploded View Exploded View Mechanical Parts List Mechanical Parts List ’ View ’ View VK Quality Group GSM C/S...
  • Page 18 ☞ ☞ Exploded View & Parts List Exploded View & Parts List VK Quality Group GSM C/S...
  • Page 19 KNOB SPRING COVER SCREW FOLDER R COVER SCREW FOLDER L COVER SCREW R KEYPAD NAVI COVER SCREW L FPC NAVI ASSY KNOB LOCK DECO FRONT T APE MOLDULE CASE FRONT SCREW GASKET FORM IO RUBBER FRONT VK Quality Group GSM C/S...
  • Page 20 ☞ ☞ ’ View ’ View Folder Upper ’ Folder Upper ’ Folder Upper Ass’y VK Quality Group GSM C/S...
  • Page 21 ☞ ☞ ’ View ’ View Folder Lower ’ Folder Lower ’ Folder Lower Ass’y VK Quality Group GSM C/S...
  • Page 22 ☞ ☞ ’ View ’ View Front Case ’ Front Case ’ Front Case Ass’y VK Quality Group GSM C/S...
  • Page 23 ☞ ☞ ’ View ’ View Rear Case ’ Rear Case ’ Rear Case Ass’y VK Quality Group GSM C/S...
  • Page 24 2. Disassembling Methods 2. Disassembling Methods Tools Tools Battery & Rear Case Disassembling Battery & Rear Case Disassembling Main PCB Disassembling Main PCB Disassembling Folder Disassembling Folder Disassembling VK Quality Group GSM C/S...
  • Page 25 Star-shaped(*) Screw Driver Hinge Remover Tweezers Cross-tip(+) Screw Driver In disassembling the VK Mobile Phone set, - you must use tools meeting standard specifications. - do not exert excessive force; Otherwise, the phone set may be damaged. VK Quality Group GSM C/S...
  • Page 26 Battery & Rear Case Battery & Rear Case Disassembling Disassembling VK Quality Group GSM C/S...
  • Page 27 ☞ ☞ Screws Screws Unscrew four screws on the back of the phone. Turn the screws anticlockwise using cross-shaped screwdriver . Use a screwdriver meeting standard specifications to unscrew. VK Quality Group GSM C/S...
  • Page 28 2. Widen a space to make a gap. 3. Hold the knob lock with your hand and then slowly press down the rear case for removal. Exerting excessive force could damage the rear case. VK Quality Group GSM C/S...
  • Page 29 ☞ ☞ Main PCB Main PCB 1. Unscrew like a picture 2. Take off Speaker. 3. Take off Intenna VK Quality Group GSM C/S...
  • Page 30 Main PCB Main PCB Disassembling Disassembling VK Quality Group GSM C/S...
  • Page 31 ☞ ☞ Main PCB Main PCB 1. Disconnect Key FPCB & Camera Connector from the 2. Take off the PBA. VK Quality Group GSM C/S...
  • Page 32 Lower Case ’ Lower Case ’ Disassembling Disassembling VK Quality Group GSM C/S...
  • Page 33 ☞ ☞ Exploded View Exploded View 1. Unscrew like a picture 1 2. Un-Hook like a picture 2 3. Take off Keypad, FPC EL Navi and Deco front VK Quality Group GSM C/S...
  • Page 34 ☞ ☞ Exploded View Exploded View 1. Unscrew like a picture 2. Take off Slide Bottom case VK Quality Group GSM C/S...
  • Page 35 ☞ ☞ Exploded View Exploded View 1. Unscrew like a picture 2. Take off the Hinge Slide from lower case ass’y VK Quality Group GSM C/S...
  • Page 36 ’ ’ Disassembling Disassembling VK Quality Group GSM C/S...
  • Page 37 ☞ ☞ Exploded View Exploded View 1. Take off LCD Module from Front upper case VK Quality Group GSM C/S...
  • Page 38 ☞ ☞ Exploded View Front upper ’ Exploded View Front upper ’ Front upper Ass’y Window main VK Quality Group GSM C/S...
  • Page 39 ☞ ☞ Exploded View Lower Case ’ Exploded View Lower Case ’ Lower case Ass’y HInge Slide Cover screw main L/R VK Quality Group GSM C/S...
  • Page 40 ☞ ☞ Exploded View Front case ’ Exploded View Front case ’ Front case Ass’y Camera Module Deco Front Keypad Keypad Navi FPC EL Navi VK Quality Group GSM C/S...
  • Page 41 ☞ ☞ Exploded View Rear case ’ Exploded View Rear case ’ Rear case Ass;y knob side cover ear jack Knob camera Cover RF Cover screw main L/R Cover IO Knob Lock Speaker Intenna VK Quality Group GSM C/S...

  • Page 42: Chapter 4. Block Diagram

    CHAPTER 4. CHAPTER 4. BLOCK DIAGRAM BLOCK DIAGRAM RF Block Diagram RF Block Diagram BASEBAND Block Diagram BASEBAND Block Diagram VK Quality Group GSM C/S...
  • Page 43 ☞ ☞ MODULE AND APPLICATION Block Diagram MODULE AND APPLICATION Block Diagram VK Quality Group GSM C/S...

  • Page 44: Chapter 5. Schematic

    Peripheral & Key Block Peripheral & Key Block Power Mgmt Block Power Mgmt Block RF Block RF Block Audio & Video Block Audio & Video Block Bluetooth Block Bluetooth Block Battery Charging Block Battery Charging Block VK Quality Group GSM C/S...
  • Page 45 SIM_IO SIM_CLK SIM_RST CHG_IN ON_OFF SIM_IO SIM_CLK SIM_RST LED_INDICATE LED_INDICATE EN_VIB EN_VIB CHG_IN VIBRATOR VIBRATOR ON_OFF HOLE A2V8 A2V8 Power Bluetooth V_BAT V_BAT D2V8 D2V8 A2V8 A2V8 V_CORE V_CORE BAT_RTC BAT_RTC AVCC AVCC SIM_VCC SIM_VCC VK Quality Group GSM C/S...
  • Page 46 TX_EN SIMCLK SIM_CLK (1.8V)GPIO14/GPTBUO5 SIMDATA EL_MAIN_EN SIMDATA EL_MAIN_EN SIM_DATA (2.8V)GPIO11/SPI_DAT2/DSR1 SIM_1V8/3V BT_EN SIM_1V8/3V GPIO24/SCI_PWR(2.8V) (2.8V)GPIO13/SPI_CLK3/SCL BT_EN HS_DET (2.8V)GPIO21/SCI_DATA HS_DET LED_ID LED_ID ALERTER(2.8V) R217 330R RTCK RTCK/GPIO5/WDN LFT104 R219 LFT48 R218 C240 C241 C242 470p C243 VK Quality Group GSM C/S...
  • Page 47 /ROM_CS /RAM_CS /RAM_CS /PCS1 /POE R311 100K /PWE V_CORE /RESET R312 /RESET PVCC /RST /WPF R304 100K V_CORE VCCQ R307 100K VCCQ VCCQ /AVD R306 R309 C306 C303 100K 100n 100n WAIT /PUB /PLB INTEL VK Quality Group GSM C/S...
  • Page 48 ☞ NAND Block NAND Block V_CORE V_CORE U351 A[1..16] D[0..7] KFG1G16Q2M-DEB5 D[0..7] D[8..15] D[8..15] DQ10 DQ11 DQ12 DQ13 DQ14 DQ15 /RESET /RESET VccCore V_CORE /NAND_CS /NAND_CS VccIO R351 /AVD C351 C352 100n 100n R352 100K VK Quality Group GSM C/S...
  • Page 49 SIM_IO R435 A3212EELLT-T MIC401 MICIP V416 R437 FLIP_KEY BAT_RTC Vout ICVS0505500 J405 C414 C415 SM05-F200F-06 R440 MICIN B401 C416 C417 PAS414SR-S-VE5R R441 100n C418 C419 C420 R442 V417 V418 100n ICVS0505500 ICVS0505500 SIM_VCC SIM_RST SIM_CLK VK Quality Group GSM C/S...
  • Page 50 C508 SIM_RST SIM-RST 220n 220n SIM_CLK DVCC SIM-CLK SIM_PWREN SIM_IO SIM-PWREN SIM-IO C511 C512 SIM_1V8/3V SIM-1V8/2V9 22u/6.3V(1608T) 2u2/6.3V(1608) SIMRST RESET-IN SIMCLK CLK-IN SIMDATA DATA-IO CREF C509 C510 2u2/6.3V(1608) 2u2/6.3V(1608) C513 C514 C515 100n 220n 220n VK Quality Group GSM C/S...
  • Page 51 DCS/PCS_IN 430R 430R U602 GSM_OUT TQM7M4006 DCS/PCS_OUT R613 GSM_IN U601 V_BAT R601 R614 430R 430R MIC5255-2.85BM5 RF_2V8 R630 /SHDN 100K V_BAT C637 C607 C608 TX_EN 2u2/6.3V(1608) 100u/6.3V(3427CC) R606 TXPOWER C606 C636 C605 680p 100p 100p VK Quality Group GSM C/S...
  • Page 52 VINN R733 V701 V702 V703 V704 C743 V705 VINP PLCC AGND VDDIO R734 R735 100K 100K C744 C745 C746 4u7/10V(1608T) 100n 100n R736 HS_DET R737 AVDD HS_KEY _DET AVDD C748 C749 C747 100n 100n 4u7/10V(1608T) VK Quality Group GSM C/S...
  • Page 53 BT_RTS BT2V8 UART_CTS BT_CTS E-STLC2500A UART_RTS CONFIG_JS CONFIG_M TMS/PCM_SY NC PCM_SY NC CONFIG_CLK TCK/PCM_CLK PCM_CLK CONFIG_R TDI/PCM_IN PCM_A CONFIG_RF TDO/PCM_OUT PCM_B GPIO_0 JTAG_TDI GPIO_1 JTAG_TDO GPIO_2 JTAG_TMS GPIO_3 JTAG_NTRST JTAG_TCK VDD_T ABUS_IP_QP ABUS_QN_IN ABUS_IN_QN ABUS_QP_IP VK Quality Group GSM C/S...
  • Page 54 ☞ ☞ Battery Charger Block Battery Charger Block VK Quality Group GSM C/S...

  • Page 55: Chapter 6. Pcb Diagram

    CHAPTER 6. CHAPTER 6. PCB DIAGRAM PCB DIAGRAM Main PCB Main PCB RF Area RF Area BASEBAND Area BASEBAND Area Ared Ared VK Quality Group GSM C/S...
  • Page 56 ☞ ☞ Main PCB Main PCB Bottom Bottom VK Quality Group GSM C/S...
  • Page 57 ☞ ☞ Module Area Module Area VK Quality Group GSM C/S...
  • Page 58 ☞ ☞ RF Area RF Area VK Quality Group GSM C/S...
  • Page 59 ☞ ☞ BASEBAND Area BASEBAND Area VK Quality Group GSM C/S...
  • Page 60 KEY Detection Trouble KEY Detection Trouble Buzzer Trouble Buzzer Trouble LCD Trouble LCD Trouble Charging Trouble Charging Trouble Vibrator Trouble Vibrator Trouble Backlight Trouble Backlight Trouble SIM Detection Trouble SIM Detection Trouble Microphone Trouble Microphone Trouble VK Quality Group GSM C/S...
  • Page 61 Check U501 button then V_CORE (PMIC) or other power alright? CLK 13M, CLK 32K is Check U201 alright? (V250G) W hen boot phone can Check LCM or you hear melody U701(Backend IC) Replace Main board VK Quality Group GSM C/S...
  • Page 62 ☞ ☞ Melody Trouble Melody Trouble START Contact with Check the pin of Main board is the Speaker alright Check the melody Signal is output from Check Melody IC 25,26pin of U706 Change Speaker VK Quality Group GSM C/S...
  • Page 63 LCD Trouble LCD Trouble LCM : LCD Module CON : Connecter Test Mode Reassemble LCM CON Connect Resolde Well ring Solder? Replace LCM D2V8 alrig U701 Replace Control alright & DATA FPCB Signal Replace Replace U701 VK Quality Group GSM C/S...
  • Page 64 Q501 1,2,5,6pin is High?. 3.4V~4.2V. Check battery pack. Replace Q501 TA,CLA, Re-download S/W. DTC voltages are equal to 5.2V/ 600mA. Check one of TA, CLA and DTC. J401 connector is well soldered on the PCB. Re-mount J401. VK Quality Group GSM C/S...
  • Page 65 ☞ ☞ Vibrator Trouble Vibrator Trouble STAR Manner Mode Vibrator Reassembl Well Solder? Vibrator U706 28pin High? Replace U706 J701 30pin High? Replace U501 Replac Vibrator VK Quality Group GSM C/S...
  • Page 66 J7 0 1 2 8pin H IG H ? U 20 1 Y E S F o ld e r U 1 8p in C he ck H IG H ? Y E S R ep lace L C M E N D VK Quality Group GSM C/S...
  • Page 67 EL_SHEET Soldering? EL_SHEET U402 1pin U402 4pin Check U201 (EL_MAIN_EN) (EL_NAVI_EN) Check U201 HIGH? HIGH? Check U402 8,10pin U402 8,9pin Check HIGH? U402 & L401 U402 & L401 HIGH? Replace Replace EL_NAVI_KEY MAIN EL_SHEET FPCB VK Quality Group GSM C/S...
  • Page 68 SIM Detection Trouble Start SIM card has no problem Change the SIM card SIM connector(J405) is well soldered and pins Resolder or Rework J405 of J405 is normal SIM_VCC(J405.1) and Check U501 and U201 SIM_CLK(J405.3) is normal VK Quality Group GSM C/S...
  • Page 69 ☞ ☞ Microphone Trouble Microphone Trouble START Headset Detect Possible? Check Headset HS_DET alright? And U201 (V703) Output of sound Waveform from Check U201 C722,C726? Check Headset And Earphone VK Quality Group GSM C/S...
  • Page 70 ☞ ☞ SLIDE Detection Trouble SLIDE Detection Trouble START Slide KEY U403 Rework U403 Well Solder? U403 1pin 2.8V? Check U501 Near Magnetic U403 Replace U403 2pin Any change? Check U201 VK Quality Group GSM C/S...
  • Page 71 ☞ ☞ Key Detection Trouble Key Detection Trouble START KEY Detect trouble Key Dome Switch All Replace Dome Switch right? R401~5,414,417,420, Rework Resister 422,423 All right? Check U201 VK Quality Group GSM C/S...
  • Page 72 Main PCB MAIN Board When Camera Active the Camera driver source Check CCM, U705, J702 Voltage is 2.8V alright (J702 21,22pin) Check Data signal of U701 Check U701 and (F706, F709) F706, F709 Check Camera Module VK Quality Group GSM C/S...
  • Page 73 • U603 soldering • U603 pin 11 DC 1.8V ± 5% Frequency & Power. • U603 pin 25,26,29,28,12,13 DC 2.8V ± 5% Frequency = 902.4 MHz Power ≥ 7 dBm Replace U603 if defective. GO to A VK Quality Group GSM C/S...
  • Page 74 ☞ ☞ TX Power Trouble (E GSM) TX Power Trouble (E GSM) VK Quality Group GSM C/S...
  • Page 75 ☞ ☞ RX Sensitivity Trouble (E GSM) RX Sensitivity Trouble (E GSM) VK Quality Group GSM C/S...
  • Page 76 ☞ ☞ RX Sensitivity Trouble (E GSM) RX Sensitivity Trouble (E GSM) VK Quality Group GSM C/S...
  • Page 77 APPENDIX. APPENDIX. ELECTRICAL PARTS LIST ELECTRICAL PARTS LIST Main Parts List Main Parts List Folder Parts List Folder Parts List VK Quality Group GSM C/S...
  • Page 78 HC1515P0JG8G CAP 15pF ±5%(J) C0G(G) 50V(8) C630 HC1524P0JG8G CAP 24pF ±5%(J) C0G(G) 50V(8) C754 R401,R402,R403,R404,R405, HR151000J000 RES 1005 100Ω ±5%(J) HC1533P0JG8G CAP 33pF ±5%(J) C0G(G) 50V(8) C607,C802 R414,R417,R420,R422,R423 HC1547P0JG8G CAP 47pF ±5%(J) C0G(G) 50V(8) C701,C723 VK Quality Group GSM C/S...
  • Page 79 HCTM1005M03G TAN_CAP 1608T 10uF ±20%(M) 6.3V(3) C254,C402,C712,C713,C813 HICHV839K66A IC EL LAMP DRIVER U402 HCT71005M 04G TAN_CAP 2012T 10uF ±20%(M) 10V(4) C401 HDHBAS21000A DIODE HIGH VOLTAGE D401 C511,C720,C721,C722,C724, HCT62205M 72G TAN_CAP 1608T 22uF 6.3V HICA3212EELA IC HALL-EFFECT SWITCH U403 C726,C731,C739 VK Quality Group GSM C/S...
  • Page 80 HAM CM G4015LB C-M IC M IC401 HBBPAS414SRA BATTERY BACK UP B401 HCNREXF00100 ANT Connector ANT601,ANT602 SHIELD FRAM E A VKP110014000 SHIELD FRAM E B VKP110015000 SHIELD FRAM E C VKP110016000 CAM ERA HASSG1513LSA SPEAKER (15X13) INTENNA VK Quality Group GSM C/S...
  • Page 81 CAP.CERAMIC CHIP(1005) 1uF/6.3V(X5R) Folder Part List (PCB) HC151004K53G CAP.CERAMIC CHIP(1005) 1uF/6.3V(X5R) HC1533P0JG8G CAP. CERAMIC CHIP(1005) 33pF/50V(COG) C2,3 HR158200J000 RES 1005 820 ohm +-5% HV1510005V60 CHIP VARISTOR, 1005 Size (NORMAL) V1,2,3 HDL60009S0SB LED, INDICATE (1608, Bluishwhite) VK Quality Group GSM C/S...