LG KG270 Service Manual Download Page 21

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3.2 Power Amplifier Module (SKY77318)

The SKY77318 Power Amplifier Module (PAM) is designed in a low profile (1.2 mm), compact form

factor for quad-band cellular handsets comprising GSM850/900, DCS1800, and PCS1900 operation.

The PAM also supports Class 12 General Packet Radio Service (GPRS) multi-slot operation.

The module consists of separate GSM PA and DCS1800/PCS1900 PA blocks, impedance-matching

circuitry for 50

Ω

input and output impedances and a Power Amplifier Control (PAC) block with an

internal current-sense resistor. The custom BiCMOS integrated circuit provides the internal PAC

function and interface circuitry.

Fabricated onto a single Gallium Arsenide (GaAs) die, one Heterojunction Bipolar Transistor (HBT) PA

block supports the GSM bands and the other supports the DCS1800 and PCS1900 bands. Both PA

blocks share common power supply pins to distribute current.

The GaAs die, the Silicon (Si) die, and the passive components are mounted on a multi-layer laminate

substrate. The assembly is encapsulated with plastic overmold.

3. TECHNICAL BRIEF

- 22 -

Figure. 3-2 SKY77318 FUNCTIONAL BLOCK DIAGRAM

Summary of Contents for KG270

Page 1: ...Date April 2007 Issue 1 0 Service Manual Model KG270 MG160 Service Manual KG270 MG160 ...

Page 2: ... Power On Trouble 54 4 4 SIM Card Trouble 56 4 5 Vibrator Trouble 58 4 6 Keypad Trouble 60 4 7 RTC Trouble 62 4 8 Key backlight Trouble 64 4 9 LCD Trouble 66 4 10 Microphone Trouble 69 4 11 Receiver Trouble 71 4 12 Speaker Trouble 73 4 13 Headphone Trouble 75 4 14 Charging Trouble 77 4 15 FM Radio Trouble 79 5 DOWNLOAD 82 5 1 Download Setup 82 5 2 Download Process 83 6 BLOCK DIAGRAM 88 7 Circuit D...

Page 3: ... 4 ...

Page 4: ...esponsible for any charges that result from such unauthorized use B Incidence of Harm If a telephone company determines that the equipment provided to customer is faulty and possibly causing harm or interruption in service to the telephone network it should disconnect telephone service until repair can be done A telephone company may temporarily disconnect service as long as repair is not done C C...

Page 5: ...ment medical equipment etc Interference from unsuppressed engines or electric motors may cause problems H Electrostatic Sensitive Devices ATTENTION Boards which contain Electrostatic Sensitive Device ESD are indicated by the sign Following information is ESD handling Service personnel should ground themselves by using a wrist strap when exchange system boards When repairs are made to a system boar...

Page 6: ...Level 5 Stand by Time Over 200 hours Paging period 5 RTC Under 4 hours when removed battery Antenna Internal Type Dual band LCD Main 1 52 128x128 pixels 65K Color STN LCD Back Light Yes Back Light color Blue Vibrator Yes Speaker Receiver Yes 11x07 Receiver 16 Speaker C MIC Yes Earphone Jack Mono or Stereo Optional SIM Yes Plug in Type 3 0V MIDI 16 poly I O Connect 18 Pins included Earphone Jack ...

Page 7: ... Voice Recording X Voice Command X Answering machine X Memory User Memory O TBD Under 300KB X MMS X Pictures Still Image Moving Image X MP3 Music Contents X Java Contents O Wallpaper 3 bitmap images O Ringtone 10 MIDI Ringtones X external memory microSD Camera Camera Module X Audio Voice Codec O FR HR EFR AMR NB AMR O FM Radio O Integrated handsfree speaker O Speaker phone mode 2 PERFORMANCE 8 ...

Page 8: ...ming Clock X Dual Clock X Local Time Selected Area Time Normal Features Last Dialed Number O 10 Last Received Number O 10 Last Missed Number O 10 Scratch Pad Memory X Call Call Waiting O Manage ment Call Swap O Call Retrieve O Auto Answer X Automatic Redial O Calling Line dentification O Full Call divert O Speed Dialing O Last Number Redial O Multi party Call Conference Call O Explicit Call Transf...

Page 9: ...Vibrator Ring Indicator Earpiece Volume O 6 Level Include Mute Mute O Cell Broadcast Read Cell Broadcast O Cell Broadcast Categories O Cell Broadcast Message O Language Phone Book Entry O 300 Field O Office Mobile Numeric Store and Recall O Alphabetic Store O Alphabetic Recall O Scroll by alphabetic or O numeric order Last Number Dialed O 10 Last Number Missed O 10 Last Number Received O 10 Copy M...

Page 10: ...k Lock SIM Toolkit O Class 1 2 3 Prepaid SIM Operation O Mega SIM X Short Messaging Read Message O Manage ment Write and Edit Message O Not Support EMS Send and Receive Message O Reply to Message O Forward Message Extract Number from Message O Message Status O Message Unread Indicator O Settable Message Center Number O Reply Path and Validity O Visible and Audible Message O Receive Alerting Voice ...

Page 11: ...unter X Send via Bluetooth X Schedule Memo To Do list Messaging World Time Setting Local Time O Display Two Number of Cities Time X Dual clock Daylight saving X Summer time calibration function NITS X Automatic setting as country code in SIM Unit converter O Currency Surface Length Weight Temperature Volume Velocity Stop watch O Calculator Calculation O PC Sync Phone Book Sync X Message Sync X Mul...

Page 12: ...X Power off Alarm O On Alarm Event O Display Accessory Hand strap X Embedded microSD Card X microSD Adapter X Stereo earmic O EarMic Type Provides optionally only for supporting FM radio function earmic w music remote controller X Neck strap X LCD Cleaner X Holster X Data cable O RS232 cable Option CD X Holster charger X Standard battery Back up and Holster function additional standard battery X E...

Page 13: ...3 TECHNICAL BRIEF 14 3 1 Digital Main Processor PMB7880 3 TECHNICAL BRIEF Figure 3 1 PMB7880 FUNCTIONAL BLOCK DIAGRAM ...

Page 14: ...lity and a direct to battery Power Management Unit The transceiver consists of Constant gain direct conversion receiver with an analog I Q baseband interface Fully integrated Sigma Delta synthesizer capability Fully integrated two band RF oscillator Two band digital GMSK modulator with digital TX interface Digitally controlled crystal oscillator generating system clocks The E GOLDvoice supports a ...

Page 15: ...Keypad and display backlight supported Receiver Constant gain direct conversion receiver with fully integrated blocking filter Two integrated LNAs No need of interstage and IF filter Highly linear RF quadrature demodulator Programmable DC output level Very low power budget Transmitter Digital Sigma Delta modulator for GMSK modulation typical 163 5 dBc Hz 20 MHz Single ended outputs to PA Pout 3 5 ...

Page 16: ...loud speaker driver 250 350mW 16 Ohm earpiece driver 32 Ohm headset driver 4 measurement interfaces PA temperature battery voltage battery temperature and ambient temperature Differential microphone input System start up circuitry Charger circuitry for NiCd NiMh and LiIon cells Integrated regulators for direct connection to battery ...

Page 17: ...n amplified by a programmable gain stage The output buffer can drive a handset ear piece or an external audio amplifier an additional output driver for external loud speaker is implemented In the transmit direction the differential microphone signal is fed into a programmable gain amplifier The prefiltered and A to D converted voice signal forms a 2 Mbit s data stream The oversampled voice signal ...

Page 18: ...n bus There is an interconnection between the TEAKlite bus and the C166S X Bus 3 1 6 C166S Buses The C166S is connected to three buses 1 Local Memory LM bus 2 X Bus 3 PD Bus 3 1 7 TEAKLite Bus The TEAKlite is connected to the TEAKlite bus 3 1 8 Bus Interconnections The interconnection between the X Bus and the TEAKlite Bus uses Multicore Synchronization Shared Memory 3 1 9 Clock Concept The E GOLD...

Page 19: ...light generation is supported with a special driver for very a low external parts count Power consumption during operation phases is minimized due to flexible clock switching In the Standby Mode most parts of the device are switched off only a small part is running at 32kHz and the controller RAM is switched to a power saving mode The TEAKLite ROM can be switched off during Standby via SW 3 1 15 O...

Page 20: ...ept are not publicly documented 3 1 16 Asynchronous Operation Mode Concept The E GOLDvoice can operate in either The traditional synchronous mode with the 26MHz system clock synchronized on the base station A special asynchronous mode XO concept In the asynchronous mode the 26MHz clock input is not synchronized with the base station the residual frequency offset is compensated in the digital signa...

Page 21: ... a Power Amplifier Control PAC block with an internal current sense resistor The custom BiCMOS integrated circuit provides the internal PAC function and interface circuitry Fabricated onto a single Gallium Arsenide GaAs die one Heterojunction Bipolar Transistor HBT PA block supports the GSM bands and the other supports the DCS1800 and PCS1900 bands Both PA blocks share common power supply pins to ...

Page 22: ...o select GSM logic 0 or DCS PCS logic 1 as determined from the Band Select BS signal In Figure 1 below the BS pin selects the PA output DCS PCS_OUT orGSM_OUT and the Analog Power Control VAPC controls the level of output power The VBATT pin connects to an internal current sense resistor and interfaces to an integrated power amplifier control iPAC function which is insensitive to variations in temp...

Page 23: ...ns have to be compensated otherwise the mobile would be in danger of losing connection to the network The technique used to perform the frequency compensation is generally termed Automatic Frequency Control AFC To summarize the operation of DCXO GSM Baseband processor will calculate the AFC compensation which is continuously updated required based on the measured frequency error Then the required ...

Page 24: ...p 32 KHz oscillator module The low clock frequency and the optimized low power design give the possibility to run the chip with a minimum of power dissipation For example for this specific application the 26 MHz reference oscillator can be switched off during system standby and a lowpower time reference can be kept when the 32k clock is provided to the RTC The RTC consists of an PMB7880 specific R...

Page 25: ... 47 NA C214 47 R207 2V8_VIO 14 15 1 10 11 12 13 2 3 4 5 6 7 8 9 CN200 NA C208 MTPG MTPD R210 100K C212 27p MLED2 MLED1 SSC0_CLK SSC0_MTSR CS3 LCD_RESET MLED LCD_ID Figure 3 5 2 Charge pump interface CHARGE PUMP C204 27p 4 GND IN 5 12 NC AAT3157ITP T1 10 C1 C1 9 C2 7 C2 6 8 CP D1 1 2 D2 D3 3 11 EN_SET U200 C200 1u R202 100K 27p C203 1u C201 C202 27p VBAT MLED W_LED_DRV MLED1 MLED2 ...

Page 26: ...ple Serial Control serial digital input is used to enable disable and set current for each LED with 16 settings down to 50µA The low current mode supply current can be as low as 50µA to save power 3 TECHNICAL BRIEF 27 Figure 3 5 3 Charge pump Output Current Signals Description CS3 This signal enable to access to the driver IC of LCD SSC0_MTSR This signal transfer serial data to driver IC SSC0_CLK ...

Page 27: ...communicate with SIM card 3 signals SIM_DATA SIM_CLK SIM_RST 3 TECHNICAL BRIEF 28 Figure 3 6 SIM CARD Interface C311 0 1u 4 7K R302 C310 22p 22p C312 2V85_VSIM 2V85_VSIM 0 R303 I_O 6 2 RST 1 VCC VPP 5 J300 CLK 3 4 GND GND1 7 8 GND2 2V85_VSIM SIM_CLK SIM_RST SIM_DATA Signals Description SIM_RST This signal makes SIM card to HW default status SIM_CLK This signal is transferred to SIM card SIM_DATA T...

Page 28: ...e very beginning of the system start because changes are not allowed later 3 TECHNICAL BRIEF 29 Figure 3 7 KEY MAXTRIX Interface DOWN 2 3 5 MENU SEND 4 UP SEL KEY MATRIX 1 7 LEFT END 9 0 RIGHT 6 8 SW203 R204 680 SW201 2V0_VRTC SW216 C215 NA NA C219 R212 680 SW205 SW212 SW217 SW215 C207 NA SW210 SW214 NA C218 SW211 SW200 SW219 R215 680 SW204 NA NA C216 C220 R209 680 SW208 SW207 R201 680 SW202 C206 ...

Page 29: ...ter USB charge input constant current level can be programmed up to 500mA for rapid charging applications The AAT3681A has four basic modes for the battery charge cycle pre conditioning trickle charge constant current fast charge constant voltage and end of charge 3 TECHNICAL BRIEF 30 Figure 3 8 Charging IC Interface 10V K X5R CHARGING IC 1 10V K X5R 1u C126 2V8_VIO VCHARGE NA R120 NA R118 1 8K R1...

Page 30: ...ons and avoids aliasing by baseband sampling An automatic DC offset compensation is implemented and can be switched depending on the gain setting 3 TECHNICAL BRIEF 31 Figure 3 9 1 ASM interface Figure 3 9 2 SAW Filter interface C417 27p C418 27p FL400 5 GND1 GND2 8 GND3 10 GSM1800_1900RX 6 1 GSM1800_1900TX GSM850_900RX 4 2 GSM850_900TX 9 IN VC_GSM1800_1900TX 7 3 VC_GSM850_900TX LMSP2PAA 575TEMP VC...

Page 31: ...the MASH modulator The output of the MASH modulator is a sequence of integer divider values representing the high resolution fractional input signal This sequence controls the MMD multi modulus divider at a sample rate of 26MHz Thus a tightly controlled frequency modulation of the VCO is achieved 3 TECHNICAL BRIEF 32 Figure 3 9 3 PAM Power Amplifier Module interface 50V J NP0 50V J NP0 2012 16V K ...

Page 32: ... and analog to digital conversion are integrated on the E GOLDvoice For E GOLDvoice the EPp1 EPn1 driver are used as differntial Earpiece Driver EPPa1 is used as single ended Headset Driver The audio front end itself can be considered to be organized in three sub blocks Interface to processor cores TEAKlite and indirectly C166S Digital filters Analog part 3 TECHNICAL BRIEF 33 Figure 3 10 1 Audio i...

Page 33: ... conversion postfiltering and final amplification are performed on the analog part The amplifier buffer for voiceband receive does also support ringer functionality The ringer functionality is activated by Setting bits RINGSELPN or RINGSELPA in the voiceband part of the analog control register In transmit direction amplification prefiltering and A to D conversion analog modulation are performed on...

Page 34: ...ce SPEAKER SUSY0025801 2012 Gain Rf Rin SPEAKER AMPLIFIER 10V K 16pi 3 4T speaker C118 0 1u VBAT 0 1u C119 L103 27nH R108 82K R103 NA C120 1 uF VP B3 C3 _SD 27nH L104 U100 NCP2890AFCT2G BYPASS C1 A1 INM INP A3 OUTA A2 C2 OUTB VM B2 B1 VM_P C123 0 1u 0 1u C117 diode D101 R102 82K 20K R105 20K R106 20K R104 D100 diode R110 100K C122 0 1u CN101 1 2 C121 0 22u NA C116 RADIO_SPK_L LOUD_SPK_EN SPK_N SPK...

Page 35: ... I O CONNECTOR 11 R ON 5 EAR_R 2 AUDIO 50V J NP0 50V J NP0 2012 1608 7 RXD TOL 0 25P EAR_MIC 6 TXD 39p C325 VMIC NA R322 2V8_VIO 0 1u C317 100K R324 2V8_VIO C336 3p C326 39p 2V8_VIO 10p C322 21 22 3 4 5 6 7 8 9 HSEJ 18S04 25R 1 10 11 12 13 14 15 16 17 18 19 2 20 100K CN301 R323 18p C337 C324 10u 2V8_VIO VCHARGE 1800 FB301 C318 NA 10u C319 L300 270nH 1 2 3 VBAT CN302 R316 1 5K C328 56p R321 100K C3...

Page 36: ... PWM and handset has 3 methods ON OFF and Dimming Figure 3 11 Key LED interface KEY BACKLIGHT 10V K X5R 10V K X5R LD201 VBAT LEBB S14H LEBB S14H LD200 2SC5585 Q200 LEBB S14H LD204 1u C223 LD202 LEBB S14H 100ohm R220 LD203 LEBB S14H R219 100ohm 100ohm R218 R223 10K 100ohm R216 1K R222 LD205 LEBB S14H 1u C222 R217 100ohm R221 100ohm KEY_BACKLIGHT ...

Page 37: ...his handset has vibrator operation Control signal is controlled by EGold voice with PWM Figure 3 12 Vibrator interface 1608 VIBRATOR 50V J NP0 VBAT C302 27p CN300 1 2 R308 100K Q300 2SC5585 D300 1SS302 T5L_F_H 1K R306 27p C305 VBAT R305 10 VIBRATOR ...

Page 38: ... G1 _CE1S A3 _LB F2 _OE B4 _RSTF _UB B3 A5 _WE DQ2 F4 DQ3 DQ4 F5 DQ5 H6 DQ6 E6 G7 DQ7 DQ8 H2 DQ9 F3 C8 RFU0 RFU1 D8 E7 RFU2 RFU3 F8 H5 RFU4 RY__BY C4 VCCF G4 G5 VCCS VSS1 A3 A4 D2 A5 C2 A6 B2 A2 A7 A8 A6 A9 C6 CE2S B5 G2 DQ0 E3 DQ1 DQ10 G3 DQ11 H4 G6 DQ12 DQ13 F6 DQ14 H7 F7 DQ15 H3 S71GL032A40BAW0F E1 A0 D1 A1 A10 D6 A7 A11 A12 B7 C7 A13 A14 D7 B8 A15 E8 A16 D3 A17 C3 A18 B6 A19 A2 C1 C5 A20 B1 U3...

Page 39: ...kle charging and system reset control After system start up several methods are implemented for active and idle power saving Figure 3 14 1 Power Block interface 1608 1608 16V K X5R R101 22K 2V85_VSIM C115 2 2u VD1 BAT100 1V5_VRF0 C114 6 8K R100 220n 3V2_VBUF 1u 1u C110 C108 VBAT 2V85_VSIM VRF1 W_LED_FBN J12 W_LED_FBP J14 XO A8 A9 XOX R6 R7 VDD_SIM G15 VREFP VSS1 B8 VSS2 B9 VSS4 J8 K8 VSS5 VSS6 K7 ...

Page 40: ...quence management System turn on system turn off operation management including emergency under voltage and programmed shutdown functions Internal reset of the baseband including silent reset Tri state function of the baseband module Standby mode controlled by VCXO_EN provided by SCCU module Figure 3 14 2 EGold Voice PMU Name Output Voltage V Output Current mA Comment LRTC 2 0 4 Used for the real ...

Page 41: ...OM1 3 COM2 9 GND 6 4 IN1 8 IN2 NC1 5 7 NC2 2 NO1 10 NO2 1 VCC 0 R328 20K R330 C330 1u 9 BGND BYPASS 2 3 GND 7 VDD VIN1 1 VIN2 5 8 VOUT1 6 VOUT2 _SHDN 4 U303 LM4809LD R333 39K R337 4 7K 6 BGND 2 GND NC 5 STBY 1 3 VIN VOUT 4 1u C329 BH28FB1WHFV U304 2V8_RADIO R344 240K 2V8_RADIO R335 100K TP301 RADIO_AMP_SHDN 100p C331 C342 1u C341 1u R339 27K 2V8_RADIO C332 0 1u FM_INT 0 1u C338 22n C335 100K R345 ...

Page 42: ...ress counter then automatically wraps around to the upper byte of register 00h and proceeds from there until continuous writes cease Data transfer ceases with the STOP command After every STOP Command The internal address counter is reset For read operations the device acknowledge is followed by an eight bit data word shifted out on falling SCLK edges An internal address counter automatically incr...

Page 43: ... 4 TROUBLE SHOOTING 44 4 TROUBLE SHOOTING U400 SW400 U102 FL400 X101 FL401 REFERENCE PART Description U400 PAM Power Amp Module X101 DCXO 26MHz FL400 ASM Antenna Switch Module SW400 Mobile Switch FL401 RX SAW Filter ...

Page 44: ...act Point SW400 Antenna Matching component TEST POINT CIRCUIT DIAGRAM TP403 C410 22p R403 0 C400 1p TP401 SW400 RF500 ANT G1 G2 RF TP404 TP402 2 2nH L400 TP405 0 R401 R400 NA TP400 22nH L401 Antenna Matching component Mobile SW Coupling Capacitor ...

Page 45: ...E SHOOTING 46 CHECKING FLOW START Change PCB Check Mobile SW Download And Calibration Check Antenna PAD Intenna Contact Change Antenna OK NG OK Change SW400 NG NG Check Matching component Resolder component NG ...

Page 46: ...ouble START Check point DCXO X101 Setup Test Equipment Cell Power 74d Bm GSM850 CH190 PCS CH660 Check point mobile SW ASM SAW Filter SW400 F L400 FL401 Re Download S W CAL U400 SW400 U102 FL400 X101 FL401 TEST POINT CHECKING FLOW ...

Page 47: ...101 FL401 Is the waveform of Pin3 similar to DCXO X101 Waveform Replace X101 Yes No DCXO Circuit is OK See next page to check PLL Circuit NX3225SA W 188 34 7 2 GND1 GND2 4 1 HOT1 HOT2 3 NX3225SA X101 26MHz 2V8_VIO NA R107 TEST POINT CIRCUIT Waveform Pin 2 Pin 1 Waveform CHECKING FLOW ...

Page 48: ... U102 FL400 FL401 Pin 6 Pin 4 Check Pin 1 2 of SW400 with RF Cable Signal is OK Replace Mobile SW SW400 Yes N o Yes Mobile SW ASM is OK See next page Replace ASM FL400 N o Yes Check Pin 4 6 of FL400 Replace SAW Filter FL401 N o Check Pin 6 7 and 8 9 of FL401 TEST POINT CHECKING FLOW ...

Page 49: ...0 X101 FL401 Check point DCXO X101 Setup Test Equipment Cell Power 74dBm GSM850 CH190 PCS CH661 Re Download S W RF CAL Check point ULC2 U102 Outp ut Signal Check point PAM U400 Control Signal Check ASM Mobile S W SAW FL400 SW400 FL401 TEST POINT CHECKING FLOW ...

Page 50: ..._IN DCS_PCS_OUT 15 EGSM_IN 4 EGSM_OUT 11 18 ENABLE 5 GND1 GND2 7 GND3 8 9 GND4 GND5 10 12 GND6 NA U400 SKY77318 C416 C405 R407 0 33p C412 NA 39p C415 NA C401 0 R404 C411 NA C402 10u R410 0 R408 NA C409 NA C404 0 01u R402 1K 0 R406 R405 0 27p C413 R409 NA 12p C403 18p C406 DCS_PCS_OUT TXON_PA BS GSM_OUT TX_RAMP CIRCUIT Vapc ASM Paon BS Waveform Check Control Signals Signals are Normal Check ULC2 U1...

Page 51: ... G2 RF TP404 TP402 C417 27p 2 2nH L400 C418 27p TP405 0 R401 R400 NA TP400 FL400 5 GND1 GND2 8 GND3 10 GSM1800_1900RX 6 1 GSM1800_1900TX GSM850_900RX 4 2 GSM850_900TX 9 IN VC_GSM1800_1900TX 7 3 VC_GSM850_900TX LMSP2PAA 575TEMP 22nH L401 VC2 VC1 CIRCUIT Mode GSM900 TX DCS1800 TX GSM800 RX DCS1800 RX VC1 H 2 7V L L L VC2 L H 2 7V L L ...

Page 52: ...in 1 Pin 3 Pin 7 TEST POINT Check Pin 1 2 of SW400 with RF Cable Signal is OK Replace Mobile SW SW400 Yes N o Yes Mobile SW ASM is OK Check Antenna Check ULC2 U102 Control Signal is OK No Yes Check Pin 1 2 Replace ASM FL400 Pin 3 7 Signal is normal No Yes CHECKING FLOW ...

Page 53: ...REFP VSS1 B8 VSS2 B9 VDDP_MEM VDD_LANA K15 VDD_LBUF J13 G12 VDD_LD1 VDD_LIO J10 K10 VDD_LMEM B11 VDD_LRF1V5 VDD_LRF2V5 F15 VDD_LRTC K12 VDD_LSIM M11 VDD_MAIN1 G9 VDD_MAIN2 J7 G10 VDD_PLL VDD_RTC H13 VBAT_1 VBAT_2 F12 H15 VBAT_3 VBAT_4 H14 F6 VDDP_IO L4 D12 REXT IREF G13 AGND G14 2V8_VIO C112 1u C106 1u 2V0_VRTC 2V8_VIO 1u C113 2V8_VMEM C111 1u 2V0_VRTC 1u C109 2V5_VANA 2V8_VMEM 2 2u 18nH L102 C101...

Page 54: ...k the level change of PWRKEY Check the voltage of The LDO outputs at U102 THE PHONE WILL POWER ON Charge or Change Battery Check the contact of power key Or dome switch Replace U102 YES YES YES NO NO LDO VOLTAGE PART V_IO 2 8V C107 V_BUF 3 2V C101 V_MEM 2 8V C109 V_ANA 2 5V C113 V_SIM 2 85V C108 VRF0 1 5V C110 NO ...

Page 55: ...SIM Card Trouble C331 C332 J300 PIN1 R302 C310 TEST POINT CIRCUIT DIAGRAM C311 0 1u 4 7K R302 C310 22p 22p C312 2V85_VSIM 2V85_VSIM 0 R303 I_O 6 2 RST 1 VCC VPP 5 J300 CLK 3 4 GND GND1 7 8 GND2 2V85_VSIM SIM_CLK SIM_RST SIM_DATA ...

Page 56: ...e SIM Card Our phone supports only 3V SIM card YES Check J300 PIN1 NG OK J300 PIN1 2 85V Change board Check soldering status of J300 and Other component OK NG Resolder J300 or other component R302 C310 C311 C312 OK Check Operation Change board Re download SW Checking Flow ...

Page 57: ...LE SHOOTING 58 4 5 Vibrator Trouble Q300 PIN3 R305 R306 R308 TEST POINT CIRCUIT DIAGRAM 1608 50V J NP0 VBAT C302 27p CN300 1 2 R308 100K Q300 2SC5585 D300 1SS302 T5L_F_H 1K R306 27p C305 VBAT R305 10 VIBRATOR ...

Page 58: ... Voltage Level of R306 R308 OK NG OK Change PCB Enter the engineering mode and set vibrator on R306 2 8V R308 0 7V Check Voltage Level of Q300 PIN3 and R305 Q300 PIN3 0V R305 0V Change Q300 NG Replace Vibrator START Checking Flow ...

Page 59: ...IGHT 6 8 SW203 R204 680 SW201 2V0_VRTC SW216 C215 NA NA C219 R212 680 SW205 SW212 SW217 SW215 C207 NA SW210 SW214 NA C218 SW211 SW200 SW219 R215 680 SW204 NA NA C216 C220 R209 680 SW208 SW207 R201 680 SW202 C206 NA R211 680 SW209 SW213 NA C205 680 R203 R214 680 R213 680 SW218 NA C217 SW206 KEY_OUT2 KEY_OUT3 KEY_OUT4 KEY_IN3 END_KEY KEY_IN0 KEY_IN2 KEY_IN1 KEY_IN4 KEY_OUT1 ...

Page 60: ...4 TROUBLE SHOOTING 61 Check soldering status Of component OK NG Resolder component R201 R203 R204 R209 R211 R212 R213 R214 R215 Change PCB Check Metal Doom NG Change Metal Doom START OK Checking Flow ...

Page 61: ..._ON N7 OSC32K P6 F32K R5 B4 CLKOUT CHG_STATUS 32KOUT PWRON 32KIN X100 MC 146_12_5PF 1 2 3 4 32 768KHz C104 18p C105 18p 32KIN 32KOUT R101 22K BAT100 C114 6 8K R100 220n W_LED_FBN J12 W_LED_FBP J14 G15 VREFP G12 VDD_LD1 VDD_LRTC K12 H13 VBAT_1 VBAT_2 F12 H15 VBAT_3 VBAT_4 H14 IREF G13 AGND G14 C112 1u CIRCUIT ...

Page 62: ...4 TROUBLE SHOOTING 63 CHECKING FLOW RTC will work properly Is the frequency about 32Khz START Replace X100 and try again YES Is VRTC about 2 0V YES Replace BAT100 ...

Page 63: ...00 PIN3 TEST POINT CIRCUIT DIAGRAM KEY BACKLIGHT 10V K X5R 10V K X5R LD201 VBAT LEBB S14H LEBB S14H LD200 2SC5585 Q200 LEBB S14H LD204 1u C223 LD202 LEBB S14H 100ohm R220 LD203 LEBB S14H R219 100ohm 100ohm R218 R223 10K 100ohm R216 1K R222 LD205 LEBB S14H 1u C222 R217 100ohm R221 100ohm KEY_BACKLIGHT ...

Page 64: ...Level Of R222 NO Change PCB YES YES R222 2 8V Check Voltage Level Of R222 and Q200 PIN2 R222 0 7V Check component R222 and Q200 Replace component NO NG Check LED component LD200 LD205 R216 R221 NO Replace component Change PCB YES Checking Flow ...

Page 65: ...OINT CIRCUIT DIAGRAM IMSA 9671S 13Y902 ENQY0013801 47 R208 NA C213 27p C210 47 R206 C209 27p 1u C221 27p C211 R205 47 NA C214 47 R207 2V8_VIO 14 15 1 10 11 12 13 2 3 4 5 6 7 8 9 CN200 NA C208 MTPG MTPD R210 100K C212 27p MLED2 MLED1 SSC0_CLK SSC0_MTSR CS3 LCD_RESET MLED LCD_ID ...

Page 66: ...eck Operation After LCD changes NO Check Control Signal and Power Including soldering status C221 2 8V Control Signal Refer to next page NG Replace component Or change PCB Change PCB OK Check soldering status of CN200 OK Change LCD OK NG Replace CN200 Checking Flow ...

Page 67: ... SS0_MTSR pattern is out randomly when clock is fluctiatied clock frequency is 13MHz and LCD_RESET is High 2 8V 4 TROUBLE SHOOTING 68 WAVEFORM SS0_SCK LCD_CS ...

Page 68: ...le R300 Microphone component MIC P TEST POINT CIRCUIT DIAGRAM MAIN_MIC C313 39p 1K R300 C306 0 1u VMIC MIC300 OB4 15L42 C33L 1 2 0 1u C307 2 2K R301 100ohm R304 10u C304 C314 39p R307 100ohm 0 1u C309 2 2K R309 C303 39p 39p C308 VINNORP VINNORN ...

Page 69: ...tage level of R300 Change Microphone Check component status around MIC Re solder or replace the Component Check status of MIC Re solder or replace Microphone YES NO OK OK NG NG MIC_P about 1 2 1 5V DC with a few tens mV NG Replace PCB OK R300 VMIC 2 5V Make a call Checking Flow ...

Page 70: ...OUBLE SHOOTING 71 4 11 Receiver Trouble REC N REC P L100 C102 L101 C103 TEST POINT CIRCUIT DIAGRAM SURY0013001 RECEIVER 11 07 3T receiver 22nH L100 39p C103 39p C102 1 2 CN100 L101 22nH C100 39p REC_P REC_N ...

Page 71: ...mponent status Re solder or replace the Component Check Receiver replace Receiver YES NG OK OK NG NG Replace PCB L100 L101 bias will Fluctiate signal above 1 2V Press any Key Check L100 L101 C102 103 Re solder or replace the Component Checking Flow ...

Page 72: ...aker C118 0 1u VBAT 0 1u C119 L103 27nH R108 82K R103 NA C120 1 uF VP B3 C3 _SD 27nH L104 U100 NCP2890AFCT2G BYPASS C1 A1 INM INP A3 OUTA A2 C2 OUTB VM B2 B1 VM_P C123 0 1u 0 1u C117 diode D101 R102 82K 20K R105 20K R106 20K R104 D100 diode R110 100K C122 0 1u CN101 1 2 C121 0 22u NA C116 RADIO_SPK_L LOUD_SPK_EN SPK_N SPK_P CN200 L103 CN101íS 2PIN CN101íS 1PIN L104 AMP IC C120 C117 C118 R111 ...

Page 73: ... Vbat No Check The battery Yes Check the Signal C117 C118 Yes No Check U102 Check the Level of U100 C3 Low No Check U102 Check the Contact Of CN101 Yes No Re Assemble or Re place Speaker Try again or Change the Board Yes Re solder L102 L103 Check the Signal L102 L103 Yes No ...

Page 74: ...R_MIC 6 TXD 39p C325 VMIC NA R322 2V8_VIO 0 1u C317 100K R324 2V8_VIO C336 3p C326 39p 2V8_VIO 10p C322 21 22 3 4 5 6 7 8 9 HSEJ 18S04 25R 1 10 11 12 13 14 15 16 17 18 19 2 20 100K CN301 R323 18p C337 C324 10u 2V8_VIO VCHARGE 1800 FB301 C318 NA 10u C319 L300 270nH 1 2 3 VBAT CN302 R316 1 5K C328 56p R321 100K C323 10u R318 2 2K 39p C321 C327 10u FB302 1800 R332 0 C320 0 1u FB300 1800 VBAT BATT_TEM...

Page 75: ...Mic Earphone Go to MIC Trouble section Re solder causal component CN301 Check the signal Level at AUX_MIC Is it about 1 2 1 5V DC with a few tens mV AC Change another Ear Mic set and Try again Acoustic Does waveform at U102 EPPA1 fluctuate Replace U100 or Change the board Does waveform at CN301 4 and CN301 5 fluctuate Re solder causal component CN302 C322 etc Change another Ear Mic set and Try aga...

Page 76: ...T CIRCUIT 10V K X5R CHARGING IC 1 10V K X5R 1u C126 2V8_VIO VCHARGE NA R120 NA R118 1 8K R119 0 015u C127 160K R124 VBAT 1u C125 NA R123 R125 100K R121 NA 2 _FAULT _STATUS 3 6 EN GND 5 8 IREF 11 PGND TIME 4 7 V2P8 10 VBAT VIN 1 VSEN_TEMP 9 U101 ISL9201IRZ T 0 R122 C128 1u VCHARGE CHG_EN_TEST CHG_STATUS CHG_EN CHARGE_DETECT Charger IC U101 C125 C126 R124 CN301 VCHARGE 5 2V VBAT ...

Page 77: ...f C128 Is 2 8V YES YES YES Check the voltage of R124 High or Low YES Battery is charged YES Charging is properly operating NO NO LOW NO NO Resolder the CN300 Pin 12 13 VCHARGE The TA is out of order Change the TA Replace the U101 Check the U102 The battery may have problems Change the battery Checking Flow ...

Page 78: ...4 TROUBLE SHOOTING 79 4 15 FM Radio Trouble R338 R337 R336 R332 U304 P1 U304 P4 R329 R330 C332 C333 R327 U302 U303 R331 TEST POINT ...

Page 79: ... IN1 8 IN2 NC1 5 7 NC2 2 NO1 10 NO2 1 VCC 0 R328 20K R330 C330 1u 9 BGND BYPASS 2 3 GND 7 VDD VIN1 1 VIN2 5 8 VOUT1 6 VOUT2 _SHDN 4 U303 LM4809LD R333 39K R337 4 7K 6 BGND 2 GND NC 5 STBY 1 3 VIN VOUT 4 1u C329 BH28FB1WHFV U304 2V8_RADIO R344 240K 2V8_RADIO R335 100K TP301 RADIO_AMP_SHDN 100p C331 C342 1u C341 1u R339 27K 2V8_RADIO C332 0 1u FM_INT 0 1u C338 22n C335 100K R345 NA C334 2V8_RADIO NA...

Page 80: ...er U304 PIN1 High U304 PIN4 2 8V Check Control Signal R336 R337 338 Check I2C signal and 32K clock Check Audio Output Of Transceiver R329 R330 C332 C333 Check Audio Output Of Amplifier R327 R331 Change PCB Change U304 Change PCB Change U302 Change U303 NO NG NG NG YES OK OK OK Checking Flow ...

Page 81: ...5 DOWNLOAD 82 5 DOWNLOAD 5 1 Download Setup Configure system like figure 5 1 Figure 9 1 Download Setup ...

Page 82: ...p 1 Start or Stop download Selected configuration DLL file File name donwloading File F Exit X End program Setting S Configuration configuration download condition DLL SW files and etc About H MultiGSM Provide version information First select Setting Menu ...

Page 83: ...ect a appropriated DLL file You must select KG270_xxxxxx DLL file Select configuration file You must select cmd m0 file Select download speed You must 460800 System supports maximum 460800bps Select port select start and end port be operated ...

Page 84: ... 85 5 DOWNLOAD 5 2 3 Download step 3 Select files downloaded KG270 have 4 files eep fls dffs and cust But You must not select eep file ...

Page 85: ... and stop download next step If configuration is finished then push start button and then button is changed to STOP Turn on power of multi download and connector phones If download is started then push start button else program will download repeatedly ...

Page 86: ... 87 5 DOWNLOAD 5 2 5 Download step 5 This region appears donwload status If download is finished PASS or FAIL message is showed ...

Page 87: ... 88 6 BLOCK DIAGRAM 6 BLOCK DIAGRAM ...

Page 88: ...34 E15 RX34X D15 G7 RXD SAFE_RES M7 H9 SCL SDA H10 SSC0_CLK J6 K6 SSC0_MRST G6 SSC0_MTSR SWITCH_ON N7 B2 T2IN R9 TCK TDI M10 P8 TDO P9 TMS C5 N6 MON2 N9 R15 NC1 NC2 J15 NC3 A1 R1 NC4 F7 NMI_N N5 OE_N OSC32K P6 P13 PAOUT1 RD_N R3 P5 RESET_N D12 REXT A3 RSTOUT_N RTS_N H8 RX12 C15 B15 KP4 KP5 C6 C9 KP6 KP7 D8 F9 KP8 F8 KP9 L15 LOUD1 LOUD2 K14 R14 M0 P10 M2 R11 M7 N10 M9 R13 MICN1 R12 MICN2 MICP1 P15 ...

Page 89: ...p LEBB S14H LD204 R212 680 SW205 SW212 SW217 SW215 C207 NA SW210 SW214 27p C211 1u C223 NA LD202 LEBB S14H C218 SW211 100ohm R220 SW200 SW219 R215 680 LD203 LEBB S14H SW204 NA R219 100ohm NA C216 C220 R205 47 100ohm R218 R209 680 4 GND IN 5 12 NC NA C214 AAT3157ITP T1 10 C1 C1 9 C2 7 C2 6 8 CP D1 1 2 D2 D3 3 11 EN_SET R223 10K U200 SW208 SW207 47 R207 R201 680 100ohm R216 SW202 2V8_VIO C200 1u 1K ...

Page 90: ...5 GPIO1 19 18 GPIO2 GPIO3 17 14 LOUT NC1 1 20 NC2 PGND 21 9 RCLK 3 RFGND 13 ROUT SCLK 7 SDIO 2V85_VSIM U302 SI4702 B16 R336 4 7K R313 100K MIC300 OB4 15L42 C33L 1 2 FM_RST D300 1SS302 T5L_F_H NLAS5223BMNR2G U305 COM1 3 COM2 9 GND 6 4 IN1 8 IN2 NC1 5 7 NC2 2 NO1 10 NO2 1 VCC 2V8_VMEM 0 R328 20K R330 C330 1u 9 BGND BYPASS 2 3 GND 7 VDD VIN1 1 VIN2 5 8 VOUT1 6 VOUT2 _SHDN 4 U303 LM4809LD C326 39p 2V8...

Page 91: ...ATT 17 VCC1A 2 VCC1B 6 1 BS 3 DCS_PCS_IN DCS_PCS_OUT 15 EGSM_IN 4 EGSM_OUT 11 18 ENABLE 5 GND1 GND2 7 GND3 8 9 GND4 GND5 10 12 GND6 NA U400 SKY77318 SW400 RF500 ANT G1 G2 RF C416 TP404 L403 18nH C405 R407 0 33p 1 I2 4 9 O1_1 O1_2 8 O2_1 7 6 O2_2 B9308 FL401 2 G1 3 G2 5 G3 10 G4 I1 C412 NA 39p C415 NA C401 3p C419 0 R404 C411 NA 3p C422 L404 C402 5 1nH 10u R410 0 R408 NA C409 NA 3p C420 TP402 C404 ...

Page 92: ... 93 8 PCB LAYOUT ...

Page 93: ... 94 8 PCB LAYOUT ...

Page 94: ...r switching the engineering mode on is 2945 Pressing END will switch back to non engineering mode operation 9 3 Key Operation Use Up and Down key to select a menu and press select key to progress the test Pressing back key will switch back to the original test menu 9 4 Engineering Mode Menu Tree 9 ENGINEERING MODE ENGINEERING MODE 1 BB TEST 2 Model Version 3 Eng Mode 4 Call Timer 5 Factory Reset 6...

Page 95: ...supported BB TEST 1 Backlight 2 LCD 3 Battery Info 4 Vibrator 5 Audio 6 FM Radio 1 Backlight On 2 Backlight Off 3 Backlight Value 1 LCD Color 2 Contrast 1 Red 2 Green 3 Blue 4 Black 5 White 6 Auto LCD 1 Vibrator On 2 Vibrator Off 1 Audio Test 2 Close ...

Page 96: ... and White LCD contrast This menu displays a contrast value and LCD maker 9 4 1 3 Battery Info This menu displays the information of battery as example battery voltage level and temperature In line 2 battery voltage level is displayed with average and instant value In line 3 battery temperature value is displayed but this value is ADC value In line 4 Icon number of battery voltage is displayed 9 4...

Page 97: ... 98 9 ENGINEERING MODE 9 4 2 Model Version This menu displays the Model software version Eng Mode 1 Serving Cell 2 Neighbour Cells 3 Reset Information Model Version ...

Page 98: ... Counter RLL Radio Link Loss Counter Chtyp Channel type of Serving Cell Chmod Channel Mode of Serving Cell DTX Discontinuous Transmission mode of Serving Cell MCC Mobile Country Code of Serving Cell MNC Mobile Country Code of Serving Cell LAC Location Area Code of Serving Cell CID Cell ID of Serving Cell BSIC Base Tranceiver Station Identity Code of Serving Cell TxPwrMax MS_TXPWR_MAX_CCH value of ...

Page 99: ...his value will be used to decide cell reselection C2 C2 Value of Neighbour Cell This value will be used to decide cell reselection MCC Mobile Country Code of Neighbour Cell MNC Mobile Network Code of Neighbour Cell LAC Location Area Code of Neighbour Cell CID Cell ID of Neighbour Cell BSIC Base Tranceiver Station Identity Code of Neighbour Cell 9 4 3 3 Reset Information This menu displays the info...

Page 100: ...l Timer This menu displays the time of all calls including the received calls 9 4 5 Factory Reset This menu is to format data block in the flash memory and this procedure set up the default value in data block Call Timer Factory Reset ...

Page 101: ...9 ENGINEERING MODE 102 function is not supported MF TEST 1 All auto Test 2 Backlight 3 Audio 4 Vibrator 5 LCD 6 Key Pad 7 Mic Speaker 8 FM radio ...

Page 102: ...ht is on for about 1 5 seconds at the same time then off 9 4 6 3 Audio This menu is to test the volume of Melody It rings in the following sequence Volume 1 Volume 2 Volume 3 Volume 0 mute Volume 4 Volume 5 9 4 6 4 Vibrator Vibrator is on for about 1 5 seconds 9 4 6 5 LCD Main LCD screen resolution tests horizontally and vertically one by one and fills the screen 9 4 6 6 Key Pad When a pop up mess...

Page 103: ... 104 10 CALIBRATION 10 1 Test Equipment Setup 10 2 Calibration Steps 10 2 1 Tune on the phone 10 2 2 Execute HK_28 exe 10 CALIBRATION 4 000V 0 0000A ...

Page 104: ... 105 10 CALIBRATION 10 2 3 Click SETTING Memu 10 2 4 Setup Ezlooks menu such as the following fugure KG278 ...

Page 105: ...uch as the following fugure 10 2 6 Setup Logic operation such as the following figure Adjust the number of times KG278 PWR Power Supply CELL Call Test Equipment Operation Mode 1 By Pass not control by GPIB 2 Normal control by GPIB Setup UART Port KG278 ...

Page 106: ...10 CALIBRATION 107 10 2 7 Select MODEL 10 2 8 Click START for RF calibration 10 2 9 RF Calibration finish KG278 ...

Page 107: ...10 CALIBRATION 108 10 2 10 Calibration data will be saved to the following folder ...

Page 108: ...st Program Setting 11 1 1 Set COM Port 11 1 2 Check PC Baud rate 115200 11 1 3 Confirm EEPROM Delta file prefix name 11 1 4 Click V24AT ON and then Update Info for communicating Phone and Test Program 11 STAND ALONE TEST Not Connected ...

Page 109: ...T 11 1 5 For the purpose of the Standalone Test Change the Phone to ptest mode and then Click the Reset bar 11 1 6 Select Non signaling in the Quick Bar menu Then Standalone Test setup is finished Connected Change ptest mode ...

Page 110: ...on signaling mode bar and then confirm OK test in the command line 11 2 2 Put the number of TX Channel in the ARFCN 11 2 3 Select TX in the RF mode menu and PCL in the PA Level menu 11 2 4 Finally Click Write All bar and try the efficiency test of Phone ...

Page 111: ...11 STAND ALONE TEST 112 11 3 RX Test 11 3 1 Put the number of RX Channel in the ARFCN 11 3 2 Select RX in the RF mode menu 11 3 3 Finally Click Write All bar and try the efficiency test of Phone ...

Page 112: ... 113 14 12 13 10 17 19 1 9 4 2 11 16 3 8 5 23 6 7 21 22 20 15 18 12 EXPLODED VIEW REPLACEMENT PART LIST 12 1 EXPLODED VIEW ...

Page 113: ... 114 ...

Page 114: ...0013001 PIN 109 dB 32 ohm 11 7 3T CONTACT 18 3 ACGM00 COVER ASSY REAR ACGM0086801 Black 4 ENZY00 CONNECTOR ETC ENZY0019901 3 PIN 3 mm STRAIGHT 3 4 MCCZ00 CAP MCCZ0024001 MOLD Urethane Rubber S185A Black 4 4 MCJN00 COVER REAR MCJN0065001 MOLD PC LUPOY SC 1004A Black 8 4 MLAB00 LABEL A S MLAB0000601 HUMIDITY STICKER Without Color 2 4 MPBN00 PAD SPEAKER MPBN0039901 COMPLEX empty Without Color 16 3 GM...

Page 115: ...K X5R HD 1608 R TP 6 C104 CAP CERAMIC CHIP ECCH0000113 18 pF 50V J NP0 TC 1005 R TP 6 C105 CAP CERAMIC CHIP ECCH0000113 18 pF 50V J NP0 TC 1005 R TP 6 C106 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C107 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C108 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C109 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1...

Page 116: ...0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C202 CAP CHIP MAKER ECZH0000826 27 pF 50V J NP0 TC 1005 R TP 6 C203 CAP CHIP MAKER ECZH0000826 27 pF 50V J NP0 TC 1005 R TP 6 C204 CAP CHIP MAKER ECZH0000826 27 pF 50V J NP0 TC 1005 R TP 6 C209 CAP CHIP MAKER ECZH0000826 27 pF 50V J NP0 TC 1005 R TP 6 C210 CAP CHIP MAKER ECZH0000826 27 pF 50V J NP0 TC 1005 R TP 6 C211 CAP CHIP MAKER ECZH0000826 27 pF 50V J NP...

Page 117: ...00120 39 pF 50V J NP0 TC 1005 R TP 6 C327 CAP CERAMIC CHIP ECCH0003002 10 uF 10V Z Y5V HD 2012 R TP 6 C328 CAP CHIP MAKER ECZH0000841 56 pF 50V J NP0 TC 1005 R TP 6 C329 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C330 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C331 CAP CHIP MAKER ECZH0000813 100 pF 50V J NP0 TC 1005 R TP 6 C332 CAP CERAMIC CHIP ECCH0000182 0 1 uF ...

Page 118: ...FPC STRAIGHT TOP SMD R TP empty 6 CN301 CONNECTOR I O ENRY0006401 18 PIN 0 4 mm ANGLE H 2 5 Reverse Type 6 D300 DIODE SWITCHING EDSY0005301 SC 70 80 V 0 1 A R TP 6 FB300 FILTER BEAD CHIP SFBH0008105 1800 ohm 1005 Chip bead 1800ohm empty R TP 6 FB301 FILTER BEAD CHIP SFBH0008105 1800 ohm 1005 Chip bead 1800ohm empty R TP 6 FB302 FILTER BEAD CHIP SFBH0008105 1800 ohm 1005 Chip bead 1800ohm empty R T...

Page 119: ... ERHY0003401 1800 ohm 1 16W J 1005 R TP 6 R122 RES CHIP MAKER ERHZ0000401 0 ohm 1 16W J 1005 R TP 6 R124 RES CHIP ERHY0008402 160 Kohm 1 16W F 1005 R TP 6 R125 RES CHIP MAKER ERHZ0000406 100 Kohm 1 16W J 1005 R TP 6 R197 RES CHIP MAKER ERHZ0000401 0 ohm 1 16W J 1005 R TP 6 R202 RES CHIP MAKER ERHZ0000406 100 Kohm 1 16W J 1005 R TP 6 R205 RES CHIP MAKER ERHZ0000483 47 ohm 1 16W J 1005 R TP 6 R206 R...

Page 120: ...RHZ0000406 100 Kohm 1 16W J 1005 R TP 6 R326 RES CHIP MAKER ERHZ0000476 39 Kohm 1 16W J 1005 R TP 6 R327 RES CHIP MAKER ERHZ0000401 0 ohm 1 16W J 1005 R TP 6 R328 RES CHIP MAKER ERHZ0000401 0 ohm 1 16W J 1005 R TP 6 R329 RES CHIP MAKER ERHZ0000438 20 Kohm 1 16W J 1005 R TP 6 R330 RES CHIP MAKER ERHZ0000438 20 Kohm 1 16W J 1005 R TP 6 R331 RES CHIP MAKER ERHZ0000401 0 ohm 1 16W J 1005 R TP 6 R332 R...

Page 121: ...IC EUSY0142501 LLP 8 PIN R TP Dual 105mW Headphone Amplifier 6 U304 IC EUSY0223002 HVSOF5 5 PIN R TP 150mA CMOS LDO WITH OUTPUT CONTROL 2 8V 6 U305 IC EUSY0300101 WQFN 10 PIN R TP Small package Dual SPDT analog Switch PB Free 6 U400 PAM SMPY0014001 35 5 dBm 56 A dBc dB 6x6x1 15 SMD Tri Band 6 X100 X TAL EXXY0004602 032768 MHz 20 PPM 12 5 pF 65000 ohm SMD 6 9 1 4 1 3 6 X101 X TAL EXXY0018404 26 MHz...

Page 122: ... 1 16W J 1005 R TP 6 R213 RES CHIP MAKER ERHZ0000505 680 ohm 1 16W J 1005 R TP 6 R214 RES CHIP MAKER ERHZ0000505 680 ohm 1 16W J 1005 R TP 6 R215 RES CHIP MAKER ERHZ0000505 680 ohm 1 16W J 1005 R TP 6 R216 RES CHIP ERHY0003301 100 ohm 1 16W J 1005 R TP 6 R217 RES CHIP ERHY0003301 100 ohm 1 16W J 1005 R TP 6 R218 RES CHIP ERHY0003301 100 ohm 1 16W J 1005 R TP 6 R219 RES CHIP ERHY0003301 100 ohm 1 1...

Page 123: ...PRISMATIC 43x34x46 ALLTEL SILVER Innerpack Europe Label 3 SGEY00 EAR PHONE EAR MIKE SET SGEY0003209 10mW 16 OHM 105dB 10KHZ 450HZ empty BLACK EARPHONE HOUSING SILVER 18P MMI CONNECTOR MONO18P 5P LOW COST 3 SSAD00 ADAPTOR AC DC SSAD0024901 100 240V 5060 Hz 5 1 V 7 A CB GOST AC DC ADAPTOR 100Vac 350Vac 5 1V 0 15 0 2 700mA 5060 WALL 2P I O CONNECTOR ADAPTOR AC DC SSAD0024902 100 240V 5060 Hz 5 2 V 0 ...

Page 124: ...Note ...

Page 125: ...Note ...

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LG KG270, Service Manual

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