VK Quality Group GSM C/S GSM SERVICE MANUAL VK2020.

VK Quality Group GSM C/S

GSM GSM SERVICE MANUALSERVICE MANUAL

VK2020VK2020


Ÿ Precise adjustment should be made in a shield box or shield room where spurious noise has been eliminated.

Ÿ When using magnetized tools, note that related magnetic elements may cause malfunctio

ning of critical parts(such as IC). Use a twisted pair wire of thick type when measuring level. Using such a thick twisted pa

ir wire could reduce the measurement error as the wire contains less RF resistance. Ÿ When disassembling the phone set, you must use a driver tool meeting standard require

ments. Ÿ 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. Ÿ Note that PCB land may be detached due to overheating of a soldering iron while making

repairs on board status. Ÿ Any additional devices that cause the change of performance shall not be added to this p

hone, as registered.

☞ ☞ Service GuidelinesService Guidelines


☞ ☞ Table of Table of ContentsContentsChapter 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


CHAPTER 1. CHAPTER 1.

OVERVIEW & OVERVIEW & FEATURESFEATURES

1.1. OverviewOverview

2.2. FeaturesFeatures

3.3. StandardStandard


☞ ☞ OverviewOverview VK 2020 Mobile Phone is a Slim Bar type VK 2020 Mobile Phone is a Slim Bar type Mobile phone with color LCD,MP3,operatMobile phone with color LCD,MP3,operated in the GSM and Digital Cellular Mobile Radio System, which is the Pan-European ed in the GSM and Digital Cellular Mobile Radio System, which is the Pan-European mobile cellular standard.mobile cellular standard. VK 2020VK 2020 Mobile Phone has the operation band of Mobile Phone has the operation band of GSM 900 and DCS 1800. GSM GSM 900 and DCS 1800. GSM PhaseII features are fully supported and parts of thePhaseII features are fully supported and parts of the GSM Phase II+ features are al GSM Phase II+ features are also supported.so supported. About the SIM Toolkit, VK 2020 Mobile Phone supports up to Class 3 including ClasAbout the SIM Toolkit, VK 2020 Mobile Phone supports up to Class 3 including Class 1, 2. For speech communication, VK 2020 Mobile Phone supports Full Rate(FR), Es 1, 2. For speech communication, VK 2020 Mobile Phone supports Full Rate(FR), Enhanced Full Rate(EFR) and Half Rate(HR). For easy text, eZi Text is implemented anhanced Full Rate(EFR) and Half Rate(HR). For easy text, eZi Text is implemented and WAP protocol is adopted for internet connection.nd WAP protocol is adopted for internet connection. VK 2020 Mobile Phone supports GPRS up to Class 10.VK 2020 Mobile Phone supports GPRS up to Class 10.


☞ ☞ Features Features (HW)(HW)

Category Sub-Category Description

Dimension 95 x 47 x 8.8

Weight TBD

Form Factor Slim Bar

Antenna Intenna

Radio GSM, EGSM, GPRS

R/F band Tri band EGSM900, DCS1800, PCS1900

GPRS Class Class B 10 (4+2)

Speech Codec FR, HR, EFR, AMR

Main display 128x160 1.5” 262K OLED

Sub display No

Image sensor No

Resolution No

Digital Zoom No

Optical Zoom No

Motion JPEG No

Camcorder supporting No

Flashlight No

MPEG4 N/A

H.263 N/A

H.264 N/A

Video output N/A

Sound format MIDI, sp-MIDI, MP3, AAC, I-Melody

Ring tones Yes (64poly MIDI, MP3)

MP3 playback Yes

Voice support codec AMR (TBD)

SMS/EMS/MMS Yes

WAP 2

Java MIDP 2.0 CLDC 1.1

Instant Massage N/A

Video

Audio

Data Service

Design

Network

LCD

Camera


☞ ☞ Features Features (HW)(HW)

Category Sub-Category Description

Data Service e-mail N/A

Nor/SRAM 128 Mb / 64 Mb

Nand Memory 512Mb

External Memory No

Standard 50 x 40 x 35 (740mAh)

Extended N/A

RS232C Yes

USB Yes

IrDA No

IrRC No

Bluetooth Yes

PC syncronization Yes

Travel charger Adapter Yes

Ear – Microphone Yes

Hand strap Yes

Battery Charger Yes

PC – Sync No

Memory

Battery

Connectivity

Option


☞ ☞ Features Features (SW)(SW)

FUNCTION DETAIL ITEM COMMENTS

Last dialed number 50 entry

Last received number 50 entry

Last missed number 50 entry

Call Call waiting Yes Network dependent

Earpiece volume 5 levelMute on & Mute off Yes

Phone book SIM/Phone

Languages S/T Chinese & English Type A, D , T9

All outgoing calls

International outgoing calls

International outgoing calls except to home

All incoming calls

All incoming calls when roaming

Call Diverting

Write message Send/Add Object/Remove Object(MMS only)/Page(MMSonly)/Save/Edit Subject(MMS only)/Preview(MMSonly)/Exit/Add Contact/Edit Email(MMS only)

Outbox(unsent items/sent items) Send/Edit/Delete/Delete All/Copy to SIM,Phone(SMSonly)/Move to SIM,Phone(SMS only)/Details(MMS only)

Inbox Delete/Delete All/Reply/Reply All(MMS only)/Forward/Callback/Extract/Details/Copy toSIM,PHONE(SMS only)/Move to SIM,PHONE(SMS only)

Information Message Reception(On/Off)/Read 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), reportsending(MMS only), profile setting(MMS only), autodownload(MMS only) Validity period/SMS center No.(SMSonly)

Call barring

Normal features

Audio

Supplementary services

Short/Multimedia message


☞ ☞ Features Features (SW)(SW) FUNCTION DETAIL ITEM COMMENTS

Multi-band Support of Tri-band GSM 900 / DCS 1800/PCS1900

Test facilityDisplay software version

English

Simplified Chinese

Traditional ChineseT9 Predictive word input

Gallery Photo/Video/Image/AnimationSound/Music

Camera Photo shot/Sticker shot/Video clip

WAP Built in WAP 2.0

EMS Built in

GPRS Built in Class 10

NewDelete AllSchedule List

Morning CallReminder

Memo Edit and view 10MemosAdditionSubtractionMultiplicationDivision

Length conversion

Weight conversion

Volumes conversion

Surface conversion

Temperature conversion

Setting local time

Number of selectable cities

Player

Edit Play List Option (Repeat,Shuffle)

ReleaseRefresh

World time 65 Cities

MP3

SIM Card Release 96

Calculator Operator

Unit converter

Calendar

Alarm

Miscellaneous function

Text input Language


☞ ☞ StandardStandard

P-GSM Tx = 890~915 Rx = 935~960MHz

DCS Tx =1710~1785

Rx = 1805~1880MHz

PCS Tx =1850~1910

Rx =1 930~1990MHz

3) Radiowave Type: E-GSM Tx = 880~915 Rx = 925~960MHz

4) Oscillation Mode:

5) Modulation Mode:

7) Terminal Amp(IC):

8) Channel Separation:

11) Multiplying Method:

12) Spurious 1G~4G(-30dBm or below from the FTA standard)

Transmitter

10) IF VCO Frequency: EGSM = 798MHz

DCS = 766MHz

PCS = 854 MHz

Frequency Multiplying

SKY77328

200KHz

9) RF1 Local OscillationFrequency:

EGSM = 1849.8 ~ 1919.8MHz

DCS = 1804.9~1879.9MHz

PCS = 1929.9 ~ 1989.9MHz

2) Frequency Range:

PLL Synthesize

GMSK

6) Frequency Stability: GSM900 = 90Hz

DCS, PCS = 180Hz

1) Rated Output: GSM900 = 2W(Max)

DCS1800 = 1W(Max)

PCS1900 = 1W(Max)

E-GSM = 975~1023, 1~124

P-GSM = 1~124

DCS = 512~885

PCS =512 ~ 810

2) Channel Separation: 200KHz

3) Oscillation Mode: PLL Synthesize

4) RF2 Local OscillationFrequency:

E-GSM = 1279 ~ 1314MHz

DCS = 1327 ~ 1402MHz

PCS = 1423 ~ 1483MHz

5) Intermediate Frequency: 100KHz

6) Modulation Mode: GMSK

7) Spurious: 1G~4G(-30dBm or below from the FTAstandard)

1) Channel Number:

Receiver



APPEARANCE & APPEARANCE & CONFIGURATIONCONFIGURATION

1.1. AppearanceAppearance

2.2. IconsIcons

3.3. LCD PanelLCD Panel


☞ ☞ AppearanceAppearance


☞ ☞ IconsIcons


☞ ☞ IconsIcons


☞ ☞ LCD LCD PanelPanel


1.1. Assembly DrawingsAssembly Drawings

2.2. Disassembling Disassembling MethodsMethods


ASSEMBLING & ASSEMBLING & DISASSEMBLINGDISASSEMBLING


1. Assembly Drawings1. Assembly Drawings

1) Exploded View & Parts List


☞ ☞ Exploded View & Parts Exploded View & Parts ListList

NO. DESCRIPTION Q’TY

1 Window LCD 1

2 CASE FRONT 1

3 KEYPAD ASS’Y 1

4 DOME SHEET 1

5 KEY PBA 1

6 C-MIC 1

7 COVER EARJACK 1

8 CASE REAR 1

9 INNERPACK ASS’Y 1

10 Cover BATTERY 1

11 BLACK LCD 1

12 LCD MODULE 1

13 M1.4 SCREW 6


2. Disassembling Methods2. Disassembling Methods

1)1) ToolsTools

2)2) Rear Case DisassemblingRear Case Disassembling

3)3) Main PCB DisassemblingMain PCB Disassembling

4) LCD Module Disassembling4) LCD Module Disassembling


☞ ☞ Tool Tool PreparationPreparation

1. Star-shaped(*) 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.


Rear Case Rear Case

DisassemblingDisassembling


Turn the screws anticlockwise

using cross-shaped screwdriver .

☞ ☞ Rear Rear CaseCaseUnscrew four screws on the back of the

phone.

Widen a space to make a gap


Main PCB Main PCB



☞ ☞ Main Main PCBPCB

1.Take off Intenna 2.Separate FPCB from connector 3.Take off Main PBA Slightly .

1 2

3


LCD Module LCD Module



☞ ☞ LCD Module LCD Module

1

2Open the LCD connector, then slightly pull out LCD From Connector.

Unhook LCD PCB

3


1.1. RF Block DiagramRF Block Diagram

2.2. BASEBAND Block BASEBAND Block DiagramDiagram


BLOCK DIAGRAMBLOCK DIAGRAM


☞ ☞ RF Block RF Block DiagramDiagram


☞ ☞ BASEBAND Block BASEBAND Block DiagramDiagram


1.1. OverallOverall

2.2. Base Band BlockBase Band Block

3.3. MCP Main BlockMCP Main Block

4.4. Nand BlockNand Block

5.5. Peripheral & Key BlockPeripheral & Key Block

6.6. Power Management BlockPower Management Block

7.7. RF BlockRF Block

8.8. Audio & Video BlockAudio & Video Block

9.9. Bluetooth BlockBluetooth Block

10.10.Hole BlockHole Block

CHAPTER CHAPTER 5. 5.

SCHEMATICSCHEMATIC


☞ ☞ Overall Overall StructureStructure


☞ ☞ Base Band BlockBase Band Block


☞ ☞ MCP MainMCP Main


☞ ☞ Nand BlockNand Block


☞ ☞ Peripheral & key Block Peripheral & key Block


☞ ☞ Power Management Power Management BlackBlack


☞ ☞ RF BlockRF Block


☞ ☞ Audio & Video Block Audio & Video Block


☞ ☞ Bluetooth Block Bluetooth Block


☞ ☞ Hole Block Hole Block


1.1. Main PCBMain PCB

2.2. Module AreaModule Area

3.3. RF AreaRF Area

4.4. Baseband AreaBaseband Area


PCB DIAGRAMPCB DIAGRAM


☞ ☞ Main PCBMain PCB

ToTopp

BottoBottomm


☞ ☞ Module AreaModule Area


☞ ☞ RF AreaRF Area


☞ ☞ BASEBAND BASEBAND AreaArea


1. Power-On Trouble

2. Melody Trouble

3. LCD Trouble

4. Charging Trouble

5. Vibrator Trouble

6. Backlight Trouble

7. SIM Detection Trouble

11.11.RX Sensitivity Trouble(E-GSM)RX Sensitivity Trouble(E-GSM)


TROUBLE SHOOTINGTROUBLE SHOOTING1.1. Power-On TroublePower-On Trouble

2.2. Melody TroubleMelody Trouble

3.3. LCD Display TroubleLCD Display Trouble

4.4. Charging TroubleCharging Trouble

5.5. Vibrator TroubleVibrator Trouble

6.6. Backlight TroubleBacklight Trouble

7.7. SIM Detection TroubleSIM Detection Trouble

8.8. Ear-Phone TroubleEar-Phone Trouble

9.9. Key Detection TroubleKey Detection Trouble

10.10. TX Power Trouble (E-GSM)TX Power Trouble (E-GSM)


☞ ☞ Power-On TroublePower-On Trouble

The level of batteryVoltage is higher

Than 3.4V

When press power button then V _CORE

or other power alright ?

Charge the battery /Check the battery .NO

Check PMICNO

YES

YES

CLK 13M, CLK 32K is alright ?

When boot phone can you hear melody

Check V250G

Check SPK or Melody IC

NO

YES

NO

YES

Replace Main board

END

START


☞ ☞ Melody TroubleMelody Trouble


☞ ☞ LCD TroubleLCD Trouble


☞ ☞ Charging TroubleCharging Trouble


☞ ☞ Vibrator TroubleVibrator Trouble


☞ ☞ Backlight TroubleBacklight Trouble


☞ ☞ SIM Detection TroubleSIM Detection Trouble


☞ ☞ Ear-Phone TroubleEar-Phone Trouble


☞ ☞ KEY Detection TroubleKEY Detection Trouble


☞☞TX Power Trouble (E-GSM)TX Power Trouble (E-GSM)


☞ ☞ TX Power Trouble (E-GSM)TX Power Trouble (E-GSM)


☞ ☞ RX Sensitivity Trouble (E-GSM)RX Sensitivity Trouble (E-GSM)


☞ ☞ RX Sensitivity Trouble (E-GSM)RX Sensitivity Trouble (E-GSM)


Main Parts Main Parts ListList

APPENDIX. APPENDIX.

ELECTRICAL PARTS LISTELECTRICAL PARTS LIST


☞ ☞ Main Parts Main Parts ListList

VK CODE NAME Q'TY REFERANCE NUMBER

G6600MO0 MAIN PBA ASSY 1HBBPAS414SRA BATTERY_BACK UP 1 B401HBF630R00001 BEAD_1608 (FERRITE) 1 BD701

HC151000J G8G CAP_1005 100pF +- 5% COG DC50V 4 C621,C623,C624,C635

HC151001K78G CAP_1005 1nF +- 10% X7R DC50V 2 C219,C716

C417,C508,C601,C602,

C609,C610,C724

C210,C211,C212,C217,

C301,C304,C351,C352,

C402,C404,C405,C411,

C420,C424,C504,C617,

C620,C701,C702,C703,

C704,C713,C715,C802,

C804,C805,C807,C813

C226,C229,C234,C235,

C720,C721HC1510P0J G8G CAP_1005 10pF +- 5% COG DC50V 1 C613HC1512P0J G8G CAP_1005 12pF +- 5% COG DC50V 2 C218,C224HC1515P0J G8G CAP_1005 15pF +- 5% COG DC50V 1 C816HC151P00CG8G CAP_1005 1pF +- 0.25% COG DC50V 2 C817,C818

HC151004K53G CAP_1005 1uF +- 10% X5R DC6.3V 6

HC151002K75G CAP_1005 10nF +- 10% X7R DC16V 7

HC151003K74G CAP_1005 0.1uF +- 10% X7R DC10V 28


VK CODE NAME Q'TY REFERANCE NUMBERC627,C628,C629,C632,C633,C634

HC151P50CG8G CAP_1005 1.5pF +- 0.25% COG DC50V2 C626,C631HC152200J G8G CAP_1005 220pF +- 5% COG DC50V 1 C723HC152202K75G CAP_1005 22nF +- 10% X7R DC16V 1 C709

C201,C203,C213,C220,C227,C501,C502,C513,C519,C726,C727,C806,C808,C809,C810,C811

HC1522P0J G8G CAP_1005 22pF +- 5% COG DC50V 1 C647HC152700J G8G CAP_1005 270pF +- 5% COG DC50V 1 C711HC153301K78G CAP_1005 3.3nF +- 10% X7R DC50V 1 C230

C202,C204,C209,C214,C221C419,C607,C612,C712,C722

HC1539P0J G8G CAP_1005 39pF +- 5% COG DC50V 4 C414,C415,C710,C719HC154700J G8G CAP_1005 470pF +- 5% COG DC50V 3 C225,C507,C801HLC51N00S00G IND_1005 1nH +- 0.3% 1 L612HC154701K78G CAP_1005 4.7nF +- 10% X7R DC50V 1 C228HC154703K53G CAP_1005 470nF +- 10% X5R DC6.3V3 C425,C426,C510

C233,C413,C728,C729,C730

HC157P00DG8G CAP_1005 7pF +- 0.5pF COG DC50V 1 C650HC161004K55G CAP_1608 1uF +- 10% X5R DC16V 4 C416,C418,C506,C603HC161005M53G CAP_1608 10uF +- 20% X5R DC6.3V 3 C505,C512,C604

C503,C511,C514,C517,C518,C608

HC164703K76G CAP_1608 470nF +- 10% X7R DC25V 1 C725HC171005K54G CAP_2012 10uF +- 10% X5R DC10V 1 C515HCNB20050301 CONNECTOR_BATTERY 1 J 402

HC151P20CG8G CAP_1005 1.2pF +- 0.25% COG DC50V6

HC152203K54G CAP_1005 220nF +- 10% X5R DC10V 16

HC153302K74G CAP_1005 33nF +- 10% X7R DC10V 5

HC1533P0J G8G CAP_1005 33pF +- 5% COG DC50V 5

HC1547P0J G8G CAP_1005 47pF +- 5% COG DC50V 5

HC162204K53G CAP_1608 2.2uF +- 10% X5R DC6.3V 6


☞ ☞ Main Parts Main Parts ListList VK CODE NAME Q'TY REFERANCE NUMBER

HCNF24582000 CONNECTOR 1 J 703HCNRMM840101 CONNECTOR_RF 1 J 601HCNSSIMS0603 CONNECTOR_SIM 1 J 403HCNZXF2B0400 CONNECTOR_ZIP 1 J 701HCT32K768001 X- TAL, 32.768KHz 1 X201

C407,C410,C707,C708,C714

HCTI4704M06G CAP_TAN(3216) 높이낮음 4.7uF +- 20% DC25V1 C717C232,C408,C409,C412,C718

HCTM2204M05G CAP_TAN(1608) 2.2uF +- 20% DC16V 1 C815HCTT1006M03G CAP_TAN(3427) 100uF +- 20% DC6.3V1 C625HDL60003T002 LED_1608 BLUE 0.4T 1 D706HDSRB520S30T DIODE 2 D501,D502HDSRB551V30T DIODE 1 D705HDT26M000001 DCXO 1 X601HFB2G4500000 FILTER_BALANCE(BLUETOOTH) 1 U802HFE100M00USB EMI FILTER AND LINE TERMINATION 1 U401HFE110M00000 EMI FILTER_4 channel (2012) 3 F701,F702,F703HIC74VCX163A IC LEVEL SHIFTER 1 U701HICAT58A41BA IC_BASEBAND V250G 1 U201HICAT73C202A IC_PMIC 1 U502HICESHSM085A IC_FRONT END MODULE 1 U604HICESTLC250A IC_BLUETOOTH SINGLE CHIP 1 U801HICKFG1216QA IC_ONENAND MEMORY (512M) 1 U351HICMIC2288YA IC_DC/DC CONVERTER 1 U703HICMIC52052A IC_LDO 1 U803HICMIC52552B IC_LDO 1 U601HICMIC52553A IC_LDO 1 U402HICMX92U616A IC_MELODY 1 U702HICNC7SZ19P6 IC_OR GATE 2 U705,U704HICPF38F305A IC_MCP 1 U301

HCT62205M72G CAP_TAN(1608) 22uF +- 20% DC6.3V 5

HCTM1005M03G CAP_TAN(1608) 10uF +- 20% DC6.3V 5


☞ ☞ Main Parts Main Parts ListList VK CODE NAME Q'TY REFERANCE NUMBER

HICR1141Q181 IC_LDO 1 U501HICSI421000A IC_RF TRANSCEIVER 1 U603HICSKY77328A IC_POWER AMP MODULE 1 U602HICSUY98001A IC_AUDIO FILTER 1 U202HIDZEDZ51B0A DIODE_ZENER 3 D702,D703,D704HJ EFDA20010B EAR_J ACK 1 J 401HLC524N0G00G IND_1005 24nH +- 2% 1 L603HLC530N0G00G IND_1005 30nH +- 2% 1 L604HLC56N80C00G IND_1005 6.8nH +- 2% (coil) 2 L602,L610HLC57N50G00G IND_1005 7.5nH +- 2% 1 L601HLC582N0J 00G IND_1005 82nH +- 5% 2 L704,L705HLIG1002M00G IND_3*3*1 10uH +- 20% (coil) 1 L501HPHK2020MNS3 PCB_MAIN 1HPLC1002M00G POWER INDUCTOR 1 L703

R207,R208,R209,R411,R435,R436,R513,R680,R708,R709,R809,R810,R811,R812

HR151000J 000 RES_1005 100 ohm +- 5% 2 R205,R206HR151001J 000 RES_1005 1K ohm +- 5% 2 R512,R720HR151002J 000 RES_1005 10K ohm +- 5% 2 R623,R723HR152003F000 RES_1005 200K ohm +- 1% 1 R624

R204,R301,R302,R303,R305,R351,R402,R421,R422,R480,R481,R701,R702,R703,R706,R713,R716,R802,R803,R804,R805

HR151004J 000 RES_1005 1M ohm +- 5% 1 R504HR1510R0J 000 RES_1005 10 ohm +- 5% 4 R733,R734,R735,R737

HR150000J 000 RES_1005 0 ohm +- 5% 14

HR151003J 000 RES_1005 100K ohm +- 5% 21


☞ ☞ Main Parts Main Parts ListList

VK CODE NAME Q'TY REFERANCE NUMBERHR151201J 000 RES_1005 1.2K ohm +- 5% 1 R503HR1513R0J 000 RES_1005 13 ohm +- 5% 1 R725HR151502F000 RES_1005 15K ohm +- 1% 1 R715HR151802F000 RES_1005 18K ohm +- 1% 1 R714HR151803J 000 RES_1005 180K ohm +- 5% 2 R406,R806HR1518R0J 000 RES_1005 18 ohm +- 5% 1 R630HR1520R0J 000 RES_1005 20 ohm +- 5% 2 R437,R438HR152200J 000 RES_1005 220 ohm +- 5% 2 R634,R635HR152201J 000 RES_1005 2.2K ohm +- 5% 2 R410,R419HR152202F000 RES_1005 22K ohm +- 1% 1 R511HR1524R0J 000 RES_1005 24 ohm +- 5% 1 R633HR152703J 000 RES_1005 270K ohm +- 5% 2 R412,R415HR153000J 000 RES_1005 300 ohm +- 5% 2 R631,R632HR153300J 000 RES_1005 330 ohm +- 5% 1 R202HR153301J 000 RES_1005 3.3K ohm +- 5% 2 R203,R707HR153302J 000 RES_1005 33K ohm +- 5% 2 R704,R705HR153303J 000 RES_1005 330K ohm +- 5% 2 R416,R405HR153600J 000 RES_1005 360 ohm +- 5% 1 R738HR153902F000 RES_1005 39K ohm +- 1% 2 R427,R428HR154700J 000 RES_1005 470 ohm +- 5% 2 R739,R740HR154701F000 RES_1005 4.7K ohm +- 1% 1 R718

R502,R515,R605,R608,R611,R615R501,R506,R514,R517,R617,R729,R730

HR1527R0F000 RES_1005 27 ohm +- 1% 2 R423,R424HR155102F000 RES_1005 51K ohm +- 1% 2 R431,R432HR155602F000 RES_1005 56K ohm +- 1% 3 R425,R426,R717HR156202F000 RES_1005 62K ohm +- 1% 2 R429,R430HR156800J 000 RES_1005 680 ohm +- 5% 1 R417HR157502J 000 RES_1005 75K ohm +- 5% 2 R731,R732HR160000J 000 RES_1608 0 ohm +- 5% 3 R508,R736,R741HR1620R0J 000 RES_1608 20 ohm +- 5% 1 R516HR4F1000J 000 RES_4- ARRAY 100 ohm +- 5% 2 ARR201,ARR202

HR154701J 000 RES_1005 4.7K ohm +- 5% 6

HR154702J 000 RES_1005 47K ohm +- 5% 7


VK CODE NAME Q'TY REFERANCE NUMBERHSMAAT4610AA SWITCH_CURRENT LIMITED LOAD 1 U503HSMNLAS4684A ANALOG SWITCH 1 U706HSMSPVM1101A ANALOG SWITCH 1 J 404HTD00000EMB9 Dual Digital Transistor(TR DUAL TYPE)1 U605HTR00UMG5NTR TR 1 Q502HTR0DTC114YE TR_NPN 2 Q701,Q703HTR2SA2018TA TR_PNP 1 Q504HTRDTA114YE0 TR_PNP 1 Q401HTRNSL12AW0A TR_PNP for Battery Operation 1 Q501

V401,V402,V403,V404,V405,V406,V407,V408,V409,V416,V417,V701,V702,V703,V704,V705,V706,V707,V708,V709,V710,V711,V712,V713,V714,V715,V716,V717,V718,V719

HXOASE21022A OSCILLATOR 26MHz 1 X801HZBRCA2450PA BLUETOOTH ANTENNA 1 ANT801VKP300095000 SMT EMT SHILD 1 G1

HV1550P00000 VARISTOR 30


THANK YOU !

VK Quality Group GSM C/S GSM SERVICE MANUAL VK2020.

Documents

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disassembling slide

overview features chapter

operation band of gsm

exploded view parts

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slim bar type mobile

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