manualshive.com logo in svg

VK Corporation VK2000+, Service Manual

Share
Download
VK Corporation VK2000+ Service Manual Download Page 58

VK Quality Group GSM C/S

☞

☞

TX Power Trouble (E

TX Power Trouble (E

-

-

GSM)

GSM)

Check

ANT Switch U604 pin 16

Frequency & Power.

Frequency = 902.4MHz

Power  = 26~32dBm

Check

Power Amp U602 pin 8

Frequency & Power.

Frequency = 902.4 MHz

Power  = 26~32dBm

Check :
• U602 soldering
• U602 pin 4 VBATT DC voltage (>3.3V)
• U602 pin 3 TX_EN 

≥

1.8V (High)

• U602 pin 2 VC1 

≤

0.5V (Low)

• U602 pin 6 TX Power > 0.2V
Replace U602 if defective.

Check :
• U604 soldering

• U604 pin 12 VC1 

≥

2.8V (High)

• U604 pin 13 VC2 

≤

0.4 (Low)

Replace U604 if defective.

YES

YES

YES

NO

NO

Check :
• RF connector J601 soldering.
• Matching network L605, C616, L606 soldering.

END

A

Summary of Contents for VK2000+

Page 1: ...VK Quality Group GSM C S GSM GSM SERVICE MANUAL SERVICE MANUAL VK2000 VK2000 ...

Page 2: ...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 repairs with power on after connecting the test package note that dangers such as overcurrent parts deterioration caused by short circuit may occur Note that PCB land may be detached due to overheating of a soldering iron while making repai...

Page 3: ...able 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 Trouble Shooting Appendix Electrical Part List ...

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: ...arts of the GSM Phase II fea features are fully supported and parts of the GSM Phase II features tures are also supported are also supported About the SIM Toolkit VK Mobile Phone supports up to Class 3 in About the SIM Toolkit VK Mobile Phone supports up to Class 3 including cluding Class 1 2 For speech communication VK Mobile Phone supports F Class 1 2 For speech communication VK Mobile Phone sup...

Page 6: ...ain display 143 x 128 1 5 65K CSTN MPEG4 N A H 263 H 264 N A Video output N A Sound format Buzzer Ring tones Yes 1poly Buzzer Voice support codec AMR TBD SMS EMS MMS Yes WAP Ver 2 0 Java N A Instant Massage N A e mail N A Memory Nor SRAM 128 Mb 32 Mb Data Service Audio Video Network Design N A PC Sync Yes Battery Charger Yes Ear Microphone Yes Travel charger Adapter Option N A PC syncronization N ...

Page 7: ...il Number Memory status SMS SIM PHONE Number Settings delivery report Validity period SMS center No SMS only Short message Call Diverting Cancel all All incoming calls when roaming All incoming calls All outgoing int calls except to home country All outgoing international calls All outgoing calls All calls Call barring Supplementary services S T Chinese English Languages SIM Phone Phone book Yes M...

Page 8: ...ut WAP Built in WAP 2 0 EMS Built in GPRS Built in Class 10 New Delete All Schedule List Morning Call Alarm Reminder Memo Edit and view 10 Memos Addition Subtraction Multiplication Division Calculator Operator Calendar Text input COMMENTS DETAIL ITEM FUNCTION Support 3V SIM SIM Card Stop Watch 65 Cities Number of selectable cities Setting local time World time Temperature conversion Surface conver...

Page 9: ...z EGSM 1849 8 1919 8MHz 9 RF1 Local Oscillation Frequency DCS 1804 9 1879 9MHz 10 IF VCO Frequency EGSM 798MHz DCS 766MHz 11 Multiplying Method Frequency Multiplying 12 Spurious 1G 4G 30dBm or below from the FTA standard 1 Rated Output 1G 4G 30dbm or below from the FTA standard 7 Spurious GMSK 6 Modulation Mode 100KHz 5 Intermediate Frequency DCS 1327 1402MHz E GSM 1279 1314MHz 4 RF2 Local Oscilla...

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 LCD Panel LCD Panel ...

Page 15: ...VK Quality Group GSM C S 1 1 Assembly Drawings Assembly Drawings 2 2 Disassembling Methods Disassembling Methods CHAPTER 3 CHAPTER 3 ASSEMBLING DISASSEMBLING ASSEMBLING DISASSEMBLING ...

Page 16: ...VK Quality Group GSM C S 1 Assembly Drawings 1 Assembly Drawings 1 1 Exploded View Exploded View 2 2 Mechanical Parts List Mechanical Parts List 3 3 Ass Ass y y View View ...

Page 17: ...ndow Main 1 2 Keypad 1 3 Deco Front L 1 4 Deco Front R 1 5 Case Front 1 6 Spring Knob 1 7 Knob Lock 1 8 Cover Front 1 9 Main Pba 1 10 Case Rear 1 11 Screw M1 4 x 3 0 4 12 Battery Innerpack 1 13 Case Battery 1 14 Indicator 1 15 Cover Earjack 1 16 Knob Side 1 17 Intenna 1 18 Cover Rf 1 19 Cover Screw 2 ...

Page 18: ...VK Quality Group GSM C S Ass Ass y y View View Case Front Ass y Case Front Case Front Ass Ass y y ...

Page 19: ...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 20: ...2 Disassembling Methods 2 Disassembling Methods 1 1 Tools Tools 2 2 Battery Rear Case Disassembling Battery Rear Case Disassembling 3 3 Main PCB Disassembling Main PCB Disassembling 4 4 Folder Disassembling Folder Disassembling ...

Page 21: ...aped Screw Driver 2 Hinge Remover 3 Tweezers 4 Cross tip Screw Driver Disassembling tools are as below 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 1 2 3 4 ...

Page 22: ...VK Quality Group GSM C S Battery Rear Case Battery Rear Case Disassembling Disassembling ...

Page 23: ...VK Quality Group GSM C S Battery Battery 1 Pull the battery lock toward the bottom of the battery pack and hold it in the position 2 Lift the battery away ...

Page 24: ... Quality Group GSM C S Turn the screws anticlockwise using cross shaped screwdriver Screws Screws Unscrew four screws on the back of the phone Use a screwdriver meeting standard specifications to unscrew ...

Page 25: ...h one hand while holding the front case with the other hand 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 Rear Case Rear Case Exerting excessive force could damage the rear case ...

Page 26: ...VK Quality Group GSM C S Main PCB Main PCB Disassembling Disassembling ...

Page 27: ...VK Quality Group GSM C S Main PCB Main PCB 1 Take off Inter Antenna 2 Take off Vibrator and buzzer 3 Take off the PBA ...

Page 28: ...VK Quality Group GSM C S Exploded View Exploded View ...

Page 29: ...VK Quality Group GSM C S 1 1 RF Block Diagram RF Block Diagram 2 2 BASEBAND Block Diagram BASEBAND Block Diagram CHAPTER 4 CHAPTER 4 BLOCK DIAGRAM BLOCK DIAGRAM ...

Page 30: ...00 1800 1900 RFOG RFOD MODE CTRL 4 DIAG RFIG RFID RFIP RFIA 1900 1800 900 850 LNA LNA LNA LNA APGA APGA CHANNEL FILTER DPGA DPGA φ DET LOW IF AFC SCLK SDIO BIP BIN BQP BQN CONTROL INTERFACE PDN SEN RAMP Chip set Part name DC Input voltage Current maximum GSM 125 mA 140mA TX DCS 120mA 135mA RX 108 mA 123mA PAM TQM7M4006 3 5V 1 8A FEM ESHS M085FA 2 85V TRANSCEIVER SI4210 2 85V 8mA ...

Page 31: ... loader Vibrator LCD control Headset PMU control USB Detect VCORE AVCC VCC D2V8 A2V8 Vibrator V_RTC SIM_IF SIM_IF 3V3 1V8 3VSYN Battery Charger External Memory I F CPU ARM9 DSP OAK Multi media LCD batter y SI M MIC EARPHONE JACK AUDIO FILTER ADC BAT_VOLT BAT_TEMP BAT_ID RADIO_TEMP CLK Transceiver Antenna Switch L N A L N A L N A PG A PG A ADC ADC CHANNEL FILTER PG A PG A DAC DAC P A P A 0 90 100KH...

Page 32: ...Main Block MCP Main Block 4 4 Peripheral Key Block Peripheral Key Block 5 5 Power Mgmt Block Power Mgmt Block 6 6 RF Block RF Block 7 7 Audio Video Block Audio Video Block 8 8 Folder Block Folder Block 9 9 Battery Charging Block Battery Charging Block CHAPTER 5 CHAPTER 5 SCHEMATIC SCHEMATIC ...

Page 33: ..._VOLT DC ON UP_ON _OFF C LK13M _EN EN_VIB SIM _PW R EN SIM _1V8 3V SIM RST SIM DATA VC C_R TC BOOT U SB_D U SB_D HS_R EC_P H S_M IC_P TDO PCM _OU T TD I PCM _IN TC K PC M _C LK V_BAT 3V3 JTAG_NTRST H S_KEY_DET BAT_TEM P U SB_DET RTC K RESET_2V8 LED_EN G1_D IR1 KEY_EL USB_LDO_EN COL 0 4 ROW 0 4 R D W R R ESET A1 UAR T_SW VCC BAT_VOLT CTS HS_REC _P BOOT LED_OUT RESET VIBRATOR R EC_P D 0 7 LC S 3V3 B...

Page 34: ...GPIO24 SCI_PWR GPIO1 GPTBUO3 DEBUG0 GPIO3 RxD2 USR_CS GPIO14 GPTBUO5 GPIO19 CTS2 SIMPRES GPO1 TxD2 LCD_EN GPO2 PWM0 RTS2 GPIO9 SPIDAT1 ADCIN1 ADCIN2 ADCIN0 GPIO10 SPI_CLK1 GPIO15 EXTINT2 VDDRTC GPO0 OSC_EN0 GPO6 OSC_EN1 GPIO8 GPTBUO4 GPIO6 ADD23 TXIP TXIN TXQP TXQN RXIP RXIN RXQP RXQN AGC_AUX_DAC TXALIM_WIN RXALIM_WIN GPTBUO0 GPTBUO2 GPTBUO1 PLL_AGC_DATA PLL_AGC_CLK PLL_AGC_EN OSC32I OSC32O VMICN ...

Page 35: ... A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 I O0 I O1 I O2 I O3 I O4 I O5 I O6 I O7 I O8 I O9 I O10 I O11 I O12 I O13 I O14 I O15 VSS VSS VSS VSS VSS VSS VSS VSS NC NC NC NC NC NC NC NC NC NC VCC VCC VCCQ VCCQ VCCQ VPP PVCC CE OE WE RST WP AVD CLK WAIT PCS1 POE PWE ZZ PUB PLB NC NC NC NC NC NC NC NC NC NC A3 R305 0R A6 UB V_CORE A19 RAM_CS WAITF A9 WR TP301 A5 C305...

Page 36: ...8 9 10 11 12 A0 0B0 GND A1 0B1 GND S1 1B1 VCC S0 1B0 VCC R424 0R R407 4R7 U402 USBUF01W6 1 2 3 4 5 6 DXin GND DYin DYout Vbus DXout TP411 R401 270K C415 33p CTS SIM_VCC R432 n m C403 10n TDI PCM_IN HS_MIC_N 3V3 V_CORE TDO PCM_OUT V402 AVLC5S02050 C414 33p C406 n m V405 AVLC5S02050 HS_MIC RTS TP405 VCC 3V3 R433 n m R446 100K USB_VCC HS_REC V_BAT U403 PI5A3158 1 2 3 4 5 6 7 8 9 10 11 12 A0 0B0 GND A...

Page 37: ...ET SIM_CLK AVCC C514 100n BUZZER V_CORE R511 0R 1608R R515 0R UP_ON_OFF BAT_VOLT L501 LPS3010 103ML VCC SIM_IO SIM_CLK B6 BAT_RTC C508 10n LED_EN A2V8 V_BAT AVCC LX SIMRST U501 AT73C202 D2 C3 D6 D3 F5 C1 C2 E1 D1 D5 C6 F6 G6 F7 G5 G4 G7 A5 B5 B4 A3 C4 G1 C7 E5 A7 E7 A2 A1 E6 F2 B3 A4 A6 G3 D4 B6 E3 B2 F4 E4 F3 G2 D7 B7 C5 F1 E2 B1 CHG IN CHG DCON GATE BAT VOLT FLASH LED LED OUT VBATT GND ON OFF UP...

Page 38: ...R V_BAT C604 10u 6 3V 1608 R621 4K7 H A3 7 9 Wednesday November 02 2005 VK2000 600 RF 1CP3 Do Not Copy Model Name size Rev Data Sheet of Circuit Name IRX R634 10K L607 4n7H C637 100n QTX C606 680p C621 100p SYNENB R604 0R R603 18R QRX L602 6n8H ANT601 1 IRX VC1 RF_2V8 C639 n m C638 100n U602 RF3166 1 5 7 6 4 3 2 9 8 10 18 19 20 21 22 23 24 25 26 27 28 29 30 31 17 16 15 14 13 12 11 DCS PCS_IN GND G...

Page 39: ...R753 100K ROW1 COL0 D2V8 PWON RD Q704 n m B E C C752 10n ROW2 D2V8 REC_N C704 1uF 6 3V 1005 TP706 R712 100K D4 C745 2 2u 6 3V 1608T C757 n m COL2 WR C702 1uF 6 3V 1005 V730 AVLC5S02050 ROW4 R707 2M V725 AVLC5S02050 C756 33p LD7 C740 33p LL_D4 V_CORE LL_WR C758 33p D6 C754 33p V702 n m 1 2 R775 0R LD2 R709 0R D2V8 S723 LS10N2 T 1 2 3 4 6 5 7 PWON R770 51K_1 ROW0 D1 V_CORE V_CORE REC_P V_BAT C713 1u...

Page 40: ...VK Quality Group GSM C S Key EL Sheet Block Key EL Sheet Block ...

Page 41: ...VK Quality Group GSM C S Battery Charger Block Battery Charger Block ...

Page 42: ...VK Quality Group GSM C S 1 1 Main PCB Main PCB 2 2 RF Area RF Area 3 3 BASEBAND Area BASEBAND Area 4 4 Key Key Ared Ared CHAPTER 6 CHAPTER 6 PCB DIAGRAM PCB DIAGRAM ...

Page 43: ...VK Quality Group GSM C S Main PCB Main PCB Top Top Bottom Bottom ...

Page 44: ...VK Quality Group GSM C S RF Area RF Area ...

Page 45: ...VK Quality Group GSM C S BASEBAND Area BASEBAND Area Top Top Bottom Bottom ...

Page 46: ...VK Quality Group GSM C S Key Area Key Area ...

Page 47: ...n 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 ...

Page 48: ...age 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 melody Check WHAT2 Check LCM or Backend IC NO YES NO YES Replace Main board END START ...

Page 49: ... Trouble Buzzer Trouble Check VBAT buzzer signal of Buzzer Check the buzzer signal of PMIC Resolder Buzzer or Replace Buzzer YES Resloder R744 YES NO NO END START Replace Main Board Check the PWM1 signal of WHAT2 Replace PMIC YES NO ...

Page 50: ...VK Quality Group GSM C S LCD Trouble LCD Trouble ...

Page 51: ...e is between 3 4V 4 2V TA CLA DTC voltages are equal to 5 2V 400mA Reassemble battery pack Check battery pack When Q501 3pin is High then Q501 1 2 5 6pin is High Replace Q501 Check one of TA CLA and DTC Re download S W When CHG_IN 5V then Q501 3Pin is High YES NO NO NO YES YES YES YES NO NO CASE 1 CASE 2 Re mount J401 J401 connector is well soldered on the PCB NO YES ...

Page 52: ...VK Quality Group GSM C S Vibrator Trouble Vibrator Trouble ...

Page 53: ...VK Quality Group GSM C S Backlight Trouble Backlight Trouble ...

Page 54: ...VK Quality Group GSM C S SIM Detection Trouble SIM Detection Trouble ...

Page 55: ...GSM C S Ear Ear Microphone Trouble Microphone Trouble Headset Detect possible HS_DET alright Output of sound waveform from R407 R408 Check Headset and WHAT2 NO Check WHAT2 NO YES YES Check Headset and Earphone END START ...

Page 56: ...GSM C S Key Detection Trouble Key Detection Trouble START END Check U201 NO KEY Detect trouble R221 R223 ARR201 ARR202 All right J703 insert to EL Keypad socket YES YES Insert J703 to EL Keypad socket Rework Resister NO ...

Page 57: ... 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 Remarks Remarks 1 Spectrum analyzer SPAN 1MHz RBW 3MHz VBW 1MHz Press the trace key of spectrum analyzer on checking test point and press the max hold key of spectrum analyzer 2 Oscilloscope 500mV div 2...

Page 58: ...wer Frequency 902 4 MHz Power 26 32dBm Check U602 soldering U602 pin 4 VBATT DC voltage 3 3V U602 pin 3 TX_EN 1 8V High U602 pin 2 VC1 0 5V Low U602 pin 6 TX Power 0 2V Replace U602 if defective Check U604 soldering U604 pin 12 VC1 2 8V High U604 pin 13 VC2 0 4 Low Replace U604 if defective YES YES YES NO NO Check RF connector J601 soldering Matching network L605 C616 L606 soldering END A ...

Page 59: ... 12 13 DC 2 8V 5 Replace U603 if defective NO YES YES YES NO NO Set Phone Test mode 700CH 2level setting TCH 700CH 60dBm setting BCCH Spectrum analyzer as shown in Remarks Oscilloscope as shown in Remarks Remarks 1 Spectrum analyzer SPAN 1MHz RBW 3MHz VBW 1MHz Press the trace key of spectrum analyzer on checking test point and press the max hold key of spectrum analyzer 2 Oscilloscope 500mV div 2m...

Page 60: ...VK Quality Group GSM C S TX Power Trouble DCS TX Power Trouble DCS ...

Page 61: ...8 11 12 13 DC 2 8V 5 Replace U603 if defective NO YES YES YES NO NO Set Phone Test mode 190CH 7level setting TCH 190CH 60dBm setting BCCH Spectrum analyzer as shown in Remarks Oscilloscope as shown in Remarks Remarks 1 Spectrum analyzer SPAN 1MHz RBW 3MHz VBW 1MHz Press the trace key of spectrum analyzer on checking test point and press the max hold key of spectrum analyzer 2 Oscilloscope 500mV di...

Page 62: ...ower Frequency 836 6 MHz Power 26 32dBm Check U602 soldering U602 pin 4 VBATT DC voltage 3 3V U602 pin 3 TX_EN 1 8V High U602 pin 2 VC1 0 5V Low U602 pin 6 TX Power 0 2V Replace U602 if defective Check U604 soldering U604 pin 12 VC1 2 3V High U604 pin 13 VC2 0 4V Low Replace U604 if defective YES YES YES NO NO Check RF connector J601 soldering Matching network L605 C616 L606 soldering END A ...

Page 63: ...1 12 13 DC 2 8V 5 Replace U603 if defective NO YES YES YES NO NO Set Phone Test mode 660CH 2level setting TCH 660CH 60dBm setting BCCH Spectrum analyzer as shown in Remarks Oscilloscope as shown in Remarks Remarks 1 Spectrum analyzer SPAN 1MHz RBW 3MHz VBW 1MHz Press the trace key of spectrum analyzer on checking test point and press the max hold key of spectrum analyzer 2 Oscilloscope 500mV div 2...

Page 64: ... Frequency 1879 8 MHz Power 23 29dBm Check U602 soldering U602 pin 4 VBATT DC voltage 3 3V U602 pin 3 TX_EN 1 8V High U602 pin 2 VC1 1 8V High U602 pin 6 TxPower 0 2V Replace U602 if defective Check U604 soldering U604 pin 12 VC1 0 4V Low U604 pin 13 VC2 2 8V High Replace U604 if defective YES YES YES NO NO Check RF connector J601 soldering Matching network L605 C616 L606 soldering END A ...

Page 65: ... defective Check U604 soldering U604 pin 12 VC1 0 4V Low U604 pin 13 VC2 0 4V Low Replace U604 if defective NO YES YES NO Set Phone Test mode 62CH 7level TCH 62CH 60dBm BCCH Spectrum analyzer as shown in Remarks Oscilloscope as shown in Remarks Remarks 1 Spectrum analyzer SPAN 1MHz RBW 3MHz VBW 1MHz Press the trace key of spectrum analyzer on checking test point and press the max hold key of spect...

Page 66: ...GSM Check X601 soldering NO END Check Transceiver U603 pin4 5 6 7 I Q signal DC 1 35 1 70Vp p NO YES Check U603 soldering VDD pin 12 13 28 29 DC 2 8V 5 VIO pin 11 DC 2 8V 5 Replace U603 if defective YES YES C Check DCXO X601 pin 3 26MHz oscillation Frequency 26 00MHz Signal 1Vp p ...

Page 67: ...efective Check U604 soldering U604 pin 12 VC1 0 4V Low U604 pin 13 VC2 0 4V Low Replace U604 if defective NO YES YES NO Set Phone Test mode 700CH 2level TCH 700CH 60dBm BCCH Spectrum analyzer as shown in Remarks Oscilloscope as shown in Remarks Remarks 1 Spectrum analyzer SPAN 1MHz RBW 3MHz VBW 1MHz Press the trace key of spectrum analyzer on checking test point and press the max hold key of spect...

Page 68: ...DCS Check X601 soldering NO END Check Transceiver U603 pin4 5 6 7 I Q signal DC 1 35 1 70Vp p NO YES Check U603 soldering VDD pin 12 13 28 29 DC2 8V 5 VIO pin 11 DC2 8V 5 Replace U603 if defective YES YES C Check DCXO X601 pin 3 26MHzoscillation Frequency 26 00MHz Signal 1Vp p ...

Page 69: ...f defective Check U604 soldering U604 pin 12 VC1 0 4V Low U604 pin 13 VC2 0 4V Low Replace U604 if defective NO YES YES NO Set Phone Test mode 190CH 7level TCH 190CH 60dBm BCCH Spectrum analyzer as shown in Remarks Oscilloscope as shown in Remarks Remarks 1 Spectrum analyzer SPAN 1MHz RBW 3MHz VBW 1MHz Press the trace key of spectrum analyzer on checking test point and press the max hold key of sp...

Page 70: ...GSM 850 Check X601 soldering NO END Check Transceiver U603 pin4 5 6 7 I Q signal DC 1 35 1 70Vp p NO YES Check U603 soldering VDD pin 12 13 28 29 DC2 8V 5 VIO pin 11 DC2 8V 5 Replace U603 ifdefective YES YES C Check DCXO X601 pin 3 26MHzoscillation Frequency 26 00MHz Signal 1Vp p ...

Page 71: ...fective Check U604 soldering U604 pin 12 VC1 0 4V Low U604 pin 13 VC2 0 4V Low Replace U604 if defective NO YES YES NO Set Phone Test mode 660CH 2level TCH 660CH 60dBm BCCH Spectrum analyzer as shown in Remarks Oscilloscope as shown in Remarks Remarks 1 Spectrum analyzer SPAN 1MHz RBW 3MHz VBW 1MHz Press the trace key of spectrum analyzer on checking test point and press the max hold key of spectr...

Page 72: ...PCS Check X601 soldering NO END Check Transceiver U603 pin4 5 6 7 I Q signal DC 1 35 1 70Vp p NO YES Check U603 soldering VDD pin 12 13 28 29 DC2 8V 5 VIO pin 11 DC2 8V 5 Replace U603 if defective YES YES C Check DCXO X601 pin 3 26MHzoscillation Frequency 26 00MHz Signal 1Vp p ...

Page 73: ...y Group GSM C S 1 1 Main Parts List Main Parts List 2 2 Folder Parts List Folder Parts List 3 3 Battery Charger Parts List Battery Charger Parts List APPENDIX APPENDIX ELECTRICAL PARTS LIST ELECTRICAL PARTS LIST ...

Page 74: ...6 C235 1 CAP 4 7nF 10 K X7R 7 10V 4 HC154701K74G C237 1 CAP 3 3nF 10 K X5R 5 10V 4 HC153301K54G C601 1 CAP 680pF 10 K X7R 7 50V 8 HC156800K78G C234 C507 2 CAP 470pF 5 J C0G G 50V 8 HC154700JG8G C609 C623 2 CAP 180pF 5 J C0G G 50V 8 HC151800JG8G C635 C421 2 CAP 47pF 5 J C0G G 50V 8 HC1547P0JG8G C611 1 CAP 33pF 5 J C0G G 50V 8 HC1533P0JG8G C219 C218 2 CAP 27pF 5 J C0G G 50V 8 HC1527P0JG8G C606 C735 ...

Page 75: ...C607 TAN_CAP 1608T 2 2uF 20 M 10V 5 2 C746 C745 TAN_CAP 1608T 4 7uF 6 3V 1 C747 HC151004K53G CAP 1005 1uF 10 K X5R 5 6 3V 5 13 HC151003ZY5G CAP 100nF 80 20 Z Y5V Y 16V 5 22 J401 1 CONNECTOR 10PIN USB EARJACK U705 1 IC BLU DRIVER QFN 16L 3x3 size HICSTLC2500A U701 1 IC LEVEL SHIFTER uBGA 42pin HICCL765S00A U605 1 TR DUAL DIGITAL HTD00000EMB9 U603 1 IC FRONT END MODULE U602 1 IC RF TRANSCEIVER HICSI...

Page 76: ... 3pin 1 J404 HCNRMM840101 CONNECTOR RF 1 J601 VK2000 LCD Module 1 CONNECTOR SOCKET 20PIN 1 J703 HTR0DTC114YE TR NPN SINGLE 2 Q703 Q704 TR PNP SINGLE 1 Q401 HTRNSL12AW0A TR PNP FOR BATTERY OPERATION 1 Q501 HCT32K768001 X tal 32 768MHz 1 X201 1 X601 HTS00LS10N2T SIDE PUSH SWITCH 2 S713 S723 BATTERY BACK UP 1 BAT401 BUZZER 1 BUZ1 Antenna PAD 2 ANT602 ANT601 ...

Reviews:

No comments

Brands by name

Popular brands

Load more brands