LG LGKS20 Operating Instructions
LG LGKS20 Manual
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- LG LGKS20 | Operating Instructions - Page 1
117 4.15 Keypad Backlight Troubleshooting ........120 4.16 Main LCD Troubleshooting 121 4.17 Receiver Path 122 4.18 Headset path 124 4.19 Speaker phone path 126 4.20 Main microphone 128 4.21 Headset microphone 130 4.22 Vibrator 132 5. DOWNLOAD 133 5.1 KS20 DOWNLOAD 133 6. BLOCK DIAGRAM 146 - LG LGKS20 | Operating Instructions - Page 2
LGE Internal Use Only -4- Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 3
steps to maintain telephone service. D. Maintenance Limitations Maintenance limitations on the phones must be performed only by the manufacturer or its authorized agent. The user may not make any changes and/or repairs expect as specifically noted in this manual. Therefore, note that unauthorized - LG LGKS20 | Operating Instructions - Page 4
such as the following to the end user. F. Pictures The pictures in this manual are for illustrative purposes only; your actual hardware may look slightly different. G. Interference and Attenuation A phone may interfere with sensitive laboratory equipment, medical equipment, etc. Interference from - LG LGKS20 | Operating Instructions - Page 5
Connect Specification GSM900/1800/1900 and WCDMA2100 - Bar type Handset 99.8 X 58 X 12.9 mm Under 92.5g (with 1050mAh Battery) 3.7 (18 pin) Bluetooth, USB Push Type(+, -) Yes 18 Pin Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes -7- LGE Internal - LG LGKS20 | Operating Instructions - Page 6
Specification 3.7 V(Typ), 3.2 V(Min), [Shut Down : 3.2 V] -20 ~ +60°C -20 ~ +70°C 85 % (Max) 2) Environment (Accessory) Reference TA Power * CLA : 12 ~ 24 V(DC) Spec of PCS : [A] -> 1850, [B] -> 1910 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 7
[B] -> 1785 400kHz -19dB 400kHz 600kHz -21dB 600kHz 1200kHz -21dB 1200kHz 1800kHz -24dB 1800kHz * In case of PCS : [A] -> 1850, [B] -> 1910 -22dB -24dB -24dB -27dB Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes -9- LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 8
±3 10 10 ±4 16 11 ±5 11 8 ±4 17 9 ±5 12 6 ±4 18 7 ±5 13 4 ±4 19 5 ±5 14 2 ±5 15 0 ±5 9 Burst timing Mask IN Mask IN LGE Internal Use Only - 10 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 9
2. PERFORMANCE 2) Transmitter - WCDMA Mode No Item Specification 1 Maximum Output Power Class 3 : +24dBm(+1/-3dB) 2 Frequency Error ,1M -49dBc@∆f=8.5~12.5MHz,1M Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 11 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 10
Transmit Intermodulation 16 Error Vector Magnitude (EVM) 17 Transmit OFF Power Specification 33dB@5MHz, ACP>-50dBm 43dB@10MHz, ACP>-50dBm -36dBm@f=9~150KHz, 1K Frequency LGE Internal Use Only - 12 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 11
-band Blocking 6 Spurious Response 7 Intermodulation Characteristic 8 Spurious Emissions Specification -106.7 dBm(3.84 MHz) -25dBm(3.84MHz) -44dBm/3.84MHz( , 3.84M BW Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 13 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 12
off, LCD backlight off,Neighbor Cell off) (VT Test Condition : Speaker off, LCD backlight On) 2) KS20 Current Consumption WCDMA GSM Stand by dBm -101 ± 2 dBm -106 ± 2 dBm LGE Internal Use Only - 14 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 13
2.6 Battery BAR Indication Bar 4 Bar 4 → 3 Bar 3 → 2 Bar 2 → 1 Bar 1 → Empty Low Voltage, Warning message+ Blinking Power Off 2. PERFORMANCE Standby 100% ~ 76% 75% 50% 25% 5% 10% 5% 3.20 ± 0.05V / 0% Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 14
Cell Power : -90 ~ -105 dBm) 13 -. Acoustic (Max Vol.) MS/Headset SLR : 8 ± 3dB MS/Headset RLR : -15 ± 3dB/-12dB (SLR/RLR : Mid-value setting) Specification Current : 900 mA • Normal Battery Capacity : 1050 mAh • Charging LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 15
TECHNICAL BRIEF 3. TECHNICAL BRIEF 3.1 General Description The KS20 supports UMTS-2100, GSM-900, DCS-1800, and chipset that implements a Zero-IF radio architecture. Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 17 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 16
Polar power amplifier from a DAC within the MSM KS20 power supply voltages are managed and regulated by the PM7540 Power Management IC. This versatile device integrates all wireless handset power management, general housekeeping, and user interface support functions into a single mixed signal IC. It - LG LGKS20 | Operating Instructions - Page 17
allows multiple operating bands and modes to share the same antenna. In KS20, a common antenna connects to one of six paths: 1) UMTS-2100 Software - please see applicable AMSS Software documentation for details. Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service - LG LGKS20 | Operating Instructions - Page 18
into the IC pins Since GSM900, DCS, and PCS signals are time-division duplex (the handset can only receive or transmit at one time), switches are used to separate Rx and Tx LGE Internal Use Only - 20 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 19
3. TECHNICAL BRIEF [Fig 1.2] RTR6275 RX feature Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 21 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 20
capacitor value may be optimized for specific applictions and PCB characteristics based on Fig 1.3] GSM Transmitter matching The RTR6275 IC is able to support GSM 900 and GSM 1800/1900 mode transmitting. This design LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 21
AGC output is filtered and applied to the driver amplifier; this output stage includes an integrated support UMTS 2100/1900 and UMTS 850 mode transmitting. This design guideline shows only UMTS 2100 applications. Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service - LG LGKS20 | Operating Instructions - Page 22
3. TECHNICAL BRIEF WCDMA_2100_TX WCDMA_2100_RX [Figure 1.4] RTR6275 IC functional block diagram LGE Internal Use Only - 24 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 23
(PLL1) creates the transceiver LOs that support the UMTS 2100/1900/1800 transmitter, and transmitter calibration and monitor to meet RF system specification. RX_WCDMA_2100 L520 1nH C554 3p C553 33p FL503 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - - LG LGKS20 | Operating Instructions - Page 24
RC lowpass filter is recommended on this control line. The PM7540 IC controls the handset power-up sequence, including a special VCTCXO warm-up interval before other circuits are turned Use Only - 26 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 25
smart thermal control) • Integrated handset-level user interfaces - Four programmable current sinks recommended as keypad backlight, LCD backlight, camera flash, and general-purpose drivers Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 27 - LGE - LG LGKS20 | Operating Instructions - Page 26
MSM device's reset signal - Several events continuously monitored for triggering poweron/poweroff sequences - Supports and orchestrates soft resets - USB-OTG transceiver 1.6] MSM7200 Interface - 28 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 27
3. TECHNICAL BRIEF [Figure1.7] PM7540 Block Diagram Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 29 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 28
The TQM7M5003 is an extremely small (7 x 7 mm), GSM/EDGE PAM for handset applications. This module has been optimized for excellent EDGE efficiency and Pout in a Schematic LGE Internal Use Only - 30 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 29
the receive and transmit paths ; In the KS20 typical losses : UMTS2100_ Tx = 1.28 dB transmit insertion loss at specific frequencies, creating performance variations the operating band class and mobile station class (per the LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 30
. bands known to include other wireless transmitters that may deliver significant power levels to the receiver input. [Table 1.3] WCDMA Rx SAW Filter Specification LGE Internal Use Only - 32 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 31
bluetooth components are an bluetooth module and Antenna. Figure1.5.12-1 shows the bluetooth system architecture in the KS20. [Figure1.9] Bluetooth system architecture Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 33 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 32
RF components, the RF parts for KS20 WLAN include only WLAN module and an antenna. Figure 1.10 shows KS20 WLAN system architecture. [Figure1.10] WLAN system architecture LGE Internal Use Only - 34 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 33
memory. • Java hardware acceleration for faster Java-based games and other applets. • Supports low-power, low-frequency crystal to enable TCXO shutoff. • Integrated USIM Controller for direct interface to USIM card • Software-controlled power management feature • Integrated Bluetooth 2.0 baseband - LG LGKS20 | Operating Instructions - Page 34
& Camera Interface - USIM Interface - Dual Memory Buses(EBI1-SDRAM & EBI2-NAND Flash) - External Memory Interface (Micro SD) • Data Communication - BlueTooth - Slave USB LGE Internal Use Only - 36 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 35
Hardware Architecture BCM2048 BBlulueettooootthh FFMMRRaaddioio WWLLAANN SSWWLL--22770000SS - Touch Controller - Joy Stick - Send, End, Hot SBI USB1.1 PPMM77554400 WCDMA/HSDPA RF Block RRTTRR66227755 XXCCVVRR WWCCDDMMAA LG Electronics. Inc. All right reserved. Only for training and service - LG LGKS20 | Operating Instructions - Page 36
UMTS, WCDMA, processor BT 1.2 processor GPIO RF SBI Rx ADC Tx DAC Keypad I/F SD/SDIO1 SD/SDIO2 JTAG USB UART1 UART2 / RUIM1 UART3 / PMIC SBI 4 Bit 18 PIN MMI PM7540 KEY PAD MicroSD WLAN USB USIM [Figure1.12] Simplified Block Diagram of MSM7200 LGE Internal Use Only - 38 - Copyright © 2007 - LG LGKS20 | Operating Instructions - Page 37
This microprocessor, through the system software, controls most of the . The MSM6275 support differential GSM PA power control output. The RF interface communicates with the mobile station external RF LG Electronics. Inc. All right reserved. Only for training and service purposes - 39 - LG LGKS20 | Operating Instructions - Page 38
LCD, RAM, ROM, and EEPROM devices. Through a generic serial bus interface (SBI) the ARM926EJ-S configures and controls the functionality of the RTR6275 and PM7540 devices. LGE Internal Use Only - 40 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 39
a universal serial bus (USB) controller that supports both unidirectional and bidirectional transceiver interfaces. The USB controller acts as a USB peripheral communicating with the USB host. Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 41 - LG LGKS20 | Operating Instructions - Page 40
(U304) : Phone power supply MAX8645Y(U702) : LCD Backlight/Flash charge pump 3.9.2. PM7540 The PM7540 device (Figure) integrates all wireless handset power management. The power management portion accepts power from all the most common sources - battery, external charger, adapter, coin cell back-up - LG LGKS20 | Operating Instructions - Page 41
3. TECHNICAL BRIEF [Figure1.13] PM7540 Functional Block Diagram Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 43 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 42
of the pass transistor respectively. PM7540 Input Power Management 100~76 (%) 75~51 (%) 50~26 (%) 25~6 (%) 5~0 (%) KS20 Battery Bar Display(Stand By Condition) LGE Internal Use Only - 44 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 43
pin (VBAT). Trickle charging can be used for lithium-ion and nickelbased batteries, with its performance specified below (3.2V). The charging current is set to Managtemen Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 45 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 44
¶U Maximum Charging Voltage : 4.2V ¶U Maximum Charging Current : 900mA ¶U Nominal Battery Capacity : 1050mAh ¶U Charging time : Max 2.5h (Except time trickle charging) 20V LGE Internal Use Only - 46 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 45
SDRAM Part Name KAL009001M-D1YY Interface Spec Maker SS SS Read Access Time 45 ns 7.5 ns Write Access Time 200 us 7.5 ns [Table 1.4] External memory interface for KS20 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 47 - LGE Internal Use - LG LGKS20 | Operating Instructions - Page 46
* NAND_RE* NAND_WE* NAND_CLE NAND_WP* NAND_ALE NAND_READY DATA[7:0] NAND 2Gb (256MB) [Figure1.14] Simplified Block Diagram of Memory Interface LGE Internal Use Only - 48 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 47
Tx signal prior to the power amplifier • DAC_REF : Reference input to the MSM Tx data DACs [Figure1.15] Block Diagram of RF Interface Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 49 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 48
of Power Amp • GSM_PA_RAMP : Power Amp Gain Control of APC_IC • GSM_PA_EN : Power Amp Gain Control Enable of APC_IC LGE Internal Use Only - 50 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 49
: USIM Reset • USIM_Data : USIM Data T/Rx 3. TECHNICAL BRIEF MSM7200 USIM CLK USIM Reset USIM Data PM7540 VREG_UIM 2.85V USIM CLK USIM Reset USIM Data UART Interface Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 51 - LGE Internal Use - LG LGKS20 | Operating Instructions - Page 50
to provide an efficient interconnect between the mobile phone and a personal computer (PC). The USB interface of the MSM7200 was designed to comply with the definition of a peripheral as specified in USB Specification, Revision 1.1. Therefore, by definition, the USB interface is also compliant as - LG LGKS20 | Operating Instructions - Page 51
to PMIC(PM7540:GPIO83). [Table 1.7] Key Matrix Mapping Table Power Button KB105 KPDPWR_ON D119 INSTPAR PRSB6.8C [Figure1.18] Power Button Keypad circuit Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 53 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 52
.8C D112 PRSB6.8C [Figure1.19] Main Keypad Circuit Camera Button 4 1 3 2 SW100 LS50D23 ESCY0004201 KPD_COLUMN2 KPD_ROW1 KPD_ROW2 [Figure1.20] Camera Keypad Circuit - 54 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 53
D114 INSTPAR PRSB6.8C D115 INSTPAR PRSB6.8C D116 INSTPAR PRSB6.8C D117 INSTPAR PRSB6.8C D118 INSTPAR [Figure1.22] 5-Way Keypad Circuit Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 55 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 54
BRIEF 3.11.4. Touch Interface In KS20, 4-wire touch screen panel is used for user input method. Two resistive layers make up a 4wire touch screen panel and are [Figure1.23] Touch screen circuit - 56 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 55
dedicated camera interface port in MSM7200. The following figure is KS20 camera block diagram. MSM7200 CAMERA I/F: 8 CIF_DATA[7:0] CIF_LV VGA Camera Module and MSM7200 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 57 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 56
CAM_DATA5 CAM_DATA4 CAM_DATA3 CAM_DATA2 CAM_DATA1 CAM_DATA0 CAM_MCLK CAM_VSYNC CAM_HSYNC VCAM_1.8V VCAM1_2.6V [Figure1.24] Camera FPCB circuit LGE Internal Use Only - 58 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 57
BLED1 BLED2 BLED3 BLED4 FLED C721 C722 2.2u 2.2u VCAM_2.6V VCAM_1.8V R730 R717 [Figure1.25] Camera module I/F and Camera LDO circuit Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 59 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 58
receive 49.152MHz pixel clock (15fps), vertical sync signal, horizontal sync signal, reset signal and 8bits data from camera module. The camera module is controlled by I2C LGE Internal Use Only - 60 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 59
Data Data Data Vertical Synch Horizontal Sync GND I2C Clock I2C Clock Camera reset signal Camera I/O Power Camera I/O Power [Table 1.12] Interface of VGA Camera Module Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 61 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 60
VPWR LEMC-S11G LD100 1 2 3 4 LEDCB1 LEDCR1 LEDCG1 BLUE RED GREEN [Figure1.27] Schematic of KEY back light circuit LGE Internal Use Only - 62 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 61
MDDI_DT- LCD POWER Vci(2.6) VccIO(1.8) RESET FLM(VSYNC) LCD BLIGHT LED(AN) LED(CA) LDO LCD PWR LCD_PWR_ON Charge Pump BL PWR BL_PWR_ON [Figure1.28] LCD Module Block Diagram Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 63 - LGE Internal - LG LGKS20 | Operating Instructions - Page 62
C722 2.2u 2.2u VCAM_2.6V VCAM_1.8V R730 R717 [Figure1.29] Display/ LCD FPCB I/F and LCD BL circuit LGE Internal Use Only - 64 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 63
-1) Headset AMP (U402) SPK AMP (U401) Head_Set Analog switch (U400) Receiver and Loud Speaker MIC Head_set MIC [Figure1.30] Audio Path Block Diagram Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 65 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 64
mobile station modem. The wideband codec allows the MSM device to support 48 kHz sampling rate. Through software, the Rx path can be condenser microphones typically used in handset applications. The MICBIAS output LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 65
LGE Internal Use Only - 67 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes PLR0504F CRADLE_UART_TX CRADLE_UART_RX VUSB_5.0V CN300 21 19 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 20 22 HSEJ-18S04-25 ENRY0006001 SD12T1G - LG LGKS20 | Operating Instructions - Page 66
3. TECHNICAL BRIEF Handset main MIC BLK MIC Connector CN100 1 2 OSF213-42DC SUMY0010508 INTERNAL_MIC_P capacitor 9 1A 8 1S 7 2S 6 2A SPKR_N nRECEIVER_SW SPKR_P 5 GND LGE Internal Use Only - 68 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 67
Headset Description Receiver Voice Call Speaker Phone Headset Voice Call Speaker Phone Speaker MIDI Bell Headset MIDI Bell Speaker MP3 Headset MP3 [Table 1.13] Audio Mode Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 69 - LGE Internal Use - LG LGKS20 | Operating Instructions - Page 68
Voice + MP3 + MIDI Voice Call Receiver Mode is routed as below MSM7200 EAR1ON,EAR1OP -> Analog Switch( U400) -> Receiver LGE Internal Use Only - 70 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 69
Loud Speaker MIC Head_set MIC Voice Voice + MP3 + MIDI Voice Call Headset Mode is routed as below MSM7200 HPH_L, HPH_R -> 18Pin MMI -> Headset Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 71 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 70
AMP (U402) Head_Set Receiver and Loud Speaker Analog switch (U400) AMP (U401) MIC Head_set MIC Voice Voice + MP3 + MIDI Voice Call Speaker Phone Mode is routed as below MSM7200 LINE_ON, LINE_OP -> AMP(U401) ->Analog Switch( U400 ) -> Loud speaker LGE Internal Use Only - 72 - Copyright © 2007 - LG LGKS20 | Operating Instructions - Page 71
(U401) MIC Head_set MIC Voice Voice + MP3 + MIDI MIDI Ring Tone/MP3 Mode is routed as below MSM7200 HPH_L -> AMP(U401) -> Loud speaker Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 73 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 72
+ MP3 + MIDI MIDI Ring Tone/MP3 Headset Mode is routed as below MSM7200 HPH_L, HPH_R -> 18PIn MMI ->Headset LGE Internal Use Only - 74 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 73
Class-AB Audio Amp 1 Channel Analog SW 8 ohm receiver & Load Speaker -42 dB microphone 18Pin MMI Connector [Table 1.14] Audio main component list Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 75 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 74
Features 1. LG KS20 Main Features - Bar Type Simple & Stylish design - UMTS 2100 + GSM 900 + DCS 1800 + PCS 1900 based GSM/GPRS/EDGE/UMTS - HSDPA 3.6Mbps - 2.8" QVGA LCD (262K TFT) - Touch Sensitive User Interface - Dual Camera (2M Pixel w AF + VGA(0.3M Pixel)) - Stereo Headset & Speaker phone - 72 - LG LGKS20 | Operating Instructions - Page 75
3. TECHNICAL BRIEF 2. KS20 Main Component RF Bluetooth PMIC BB/MEM/Logic Main board, Top Logic Main board, Bottom SD/SIM Socket CAM WLAN Sub board, Top Sub board, Bottom Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 77 - LGE - LG LGKS20 | Operating Instructions - Page 76
3. TECHNICAL BRIEF KEY-FPCB/Folder Assy, Top Folder Assy, Bottom CAM-FPCB LGE Internal Use Only - 78 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 77
SAW Filter TX Dual PAM Reference FL500 SW500 X500 U403 FL501 Description Switch Test Connector VCTCXO Bluetooth RF Transceiver UMTS2100 RX SAW filter Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 79 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 78
Camera Flash PMIC, PM7540 Bluetooth ANT. Switch, UART Switch, USB MCU, MSM7200 Battery Connector Reference U201 U300 U302 CN300 U402 U400 U401 Description Memory, Amp LGE Internal Use Only - 80 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 79
Driver / 2 LDO Speaker Contact PAD Sub board to CAM FPCB connector . LCD connector(27p) Backup Battery VGA connector(20p) CAM FPCB to Sub board connector(34p) Touch MIC Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 81 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 80
4. TROUBLE SHOOTING 4. TROUBLE SHOOTING 4.1 RF Component TOP SIDE LGE Internal Use Only - 82 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 81
BOTTOM SIDE 4. TROUBLE SHOOTING Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 83 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 82
4. TROUBLE SHOOTING LGE Internal Use Only - 84 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 83
4.2 SIGNAL PATH_UMTS RF 4. TROUBLE SHOOTING ➞ Common Tx/Rx ➞ UMTS 2100 Tx/Rx ➞ UMTS 2100 Tx ➞ UMTS 2100 Rx ➞ Tx I/Q ➞ LO ➞ Rx I/Q Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 85 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 84
4. TROUBLE SHOOTING 4.3 SIGNAL PATH_GSM RF LGE Internal Use Only ➞ Common Tx/Rx ➞ GSM900 Tx ➞ DCS/PCS Tx ➞ DCS Rx ➞ PCS Rx ➞ EGSM900 Rx ➞ Tx I/Q ➞ LO ➞ Rx I/Q - 86 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 85
4. TROUBLE SHOOTING 4.4 Checking VCTCXO Block The reference frequency (19.2MHz) from X100 (TCXO) is used in TCXO Block TP4 TP2 TP3 TP1 Test Point of the TCXO Block Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 87 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 86
4. TROUBLE SHOOTING T Check C355 of PMIC (U304) Check R112 of MSM (U100) T LGE Internal Use Only - 88 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 87
4. TROUBLE SHOOTING 4.5 Checking Front-End Module Block ANT500 ANT501 R500 0 L500 C502 3.9nH C505 1. ANT_SEL1 ANT_SEL2 TP1 Test Point of the Front-End Module Block Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 89 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 88
4. TROUBLE SHOOTING Logic Table of the FEM GSM 850/GSM 900 TX GSM 1800/GSM 1900 TX GSM 850 RX GSM LOW LOW LOW ANT_SEL2 LOW LOW LOW LOW HIGH HIGH Check VCC TP1 VRF_SMPS LGE Internal Use Only - 90 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 89
4.6 Checking UMTS Block 4.6.1 Checking Tx level 4. TROUBLE SHOOTING ANT500 ANT501 R500 0 L500 C502 3.9nH C505 For testing, Max power of UMT 2100 is needed. Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 91 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 90
4. TROUBLE SHOOTING Run a FTM program set RF mode to IMT set uplink freq. To 9750 click Tx on block Check coupler U103 U502 Check Duplexer FFLL51003 4 Check FEM FFLL15000 LGE Internal Use Only - 92 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 91
4. TROUBLE SHOOTING 4.6.2 Checking UMTS PAM Control Block • PAM control signal 1. PWR_DET : UMTS Tx off 5. PA_R0 : Control signals that step the active PA mode and bias Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 93 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 92
4. TROUBLE SHOOTING 4.6.3 Checking RF Rx Level ANT500 ANT501 R500 0 L500 C502 3.9nH C505 1.5p 4.7p C565 100p C558 33p L521 2.7nH 10nH L523 WCDMA_PA_R WCDMA_PA_O LGE Internal Use Only - 94 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 93
4. TROUBLE SHOOTING Check Vbias over 2V? Check TP2 Signal exist? Check TP3 Signal exist? Check TP4 Signal exist? Check the RF S/W Check FEM Check the Duplexer FFLL501304 Check the RTR6275 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 95 - - LG LGKS20 | Operating Instructions - Page 94
4. TROUBLE SHOOTING 4.7 Checking GSM Block LGE Internal Use Only - 96 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 95
4.7.1 Checking RF Tx level 4. TROUBLE SHOOTING 4.7.2 Schematic of RF Tx level ANT500 ANT501 R500 0 TX_EN 4 VBATT 10 GND3 5 GND1 9 GSM_OUT 6 VRAMP 8 GND2 7 GSM_IN Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 97 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 96
4. TROUBLE SHOOTING 4.7.3 Checking RF Tx level LGE Internal Use Only - 98 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 97
4. TROUBLE SHOOTING 4.7.4 Checking PAM Block TP1. GSM_PA_RAMP : Power Amp Gain Control. typically, 0.2V < Vramp < FL501 EFCH897MTDB1 SFSY0030201 45 O1 G3 1 IN G2 G1 32 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 99 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 98
4. TROUBLE SHOOTING 4.7.5 Checking RF Rx Block TP1. DCS RX INPUT TP2. PCS RX INPUT TP3. GSM RX INPUT L508 5.6nH L509 27nH L511 27nH L504 15nH L507 12nH L510 33nH LGE Internal Use Only - 100 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 99
4. TROUBLE SHOOTING Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 101 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 100
4. TROUBLE SHOOTING 4.8 Checking Bluetooth Block Test Point of the Bluetooth Block Top Bottom TP1. VBT_2.6V TP2. VBT_CORE_2.6V TP3. TCXO_BT TP4. BT ANT Output LGE Internal Use Only - 102 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 101
4. TROUBLE SHOOTING Schematic of the Bluetooth Block TP4 ISCA TYPE SNGF0017401 ANT400 GND3 FEED VREG_FM_1.5V VBT_CORE_2.6V VBT_2.6V C424 C425 0.1u 1u VREG_FM_1.5V Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 103 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 102
Main board NO Change the X400 YES TP4 Signals exits? YES Change the Main NO Change the U403 LGE Internal Use Only - 104 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 103
4. TROUBLE SHOOTING 4.9 Checking WLAN Block KS20 WLAN initial power sequence is : WLAN_PWD controlled by MSM7200 GPIO for 3.3V, and U605 for 2.6V Check Q603 inverter Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 105 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 104
4. TROUBLE SHOOTING [ WLAN part 2 ( RF cable ) ] WLAN RF Switch WLAN Antenna [ WLAN part 1 ( Key FPCB Front ) ] WLAN RF Switch [ WLAN part 3 ( Sub Board Bottom ) ] LGE Internal Use Only - 106 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 105
measurement point) [ WLAN part 4 ( Sub Board Bottom ) ] U600 1.8V DC-DC converter C 613 (2.6V) C 611 (3.3V) C 610 (1.8V) [ WLAN part 5 ( Sub Board Bottom ) ] Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 107 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 106
4. TROUBLE SHOOTING U605 2.6V LDO U601 3.3V LDO X600 Sleep Clock Oscillator [ WLAN part 6 ( Sub Board Top ) ] Waveform - R632 (32.768kHz sleep clock measurement point) LGE Internal Use Only - 108 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 107
4. TROUBLE SHOOTING 4.10 Power ON Troubleshooting Power On sequence of KS20 is : PWR key press(Key FPCB) -> power up and system reset assert to MSM -> Phone booting and PS_HOLD(D311) assert to PMIC Start Battery voltage. higher NO Change or charging the than 3.20V? Battery YES D119 high to - LG LGKS20 | Operating Instructions - Page 108
4. TROUBLE SHOOTING Waveform : R314, 19.2MHz Waveform : X300, 32.768Khz LGE Internal Use Only - 110 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 109
4. TROUBLE SHOOTING D319 [ KS20 KEY FPCB Front ] VMSMA_2.6V VTCXO_2.85V R314 : 19.2Mhz VMSMP_2.6V VMSMC1_1.2V VMSMC1_1.2V [ KS20 Main PCB Bottom ] X300 : 32.768Khz VMSME_1.8V Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 111 - LGE - LG LGKS20 | Operating Instructions - Page 110
TA and battery to the phone Troubleshooting Procedure - Check the charger (TA or USB Cable) connector - Check the OVP Circuit - Check the charging current Path - Check the battery LGE Internal Use Only - 112 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service - LG LGKS20 | Operating Instructions - Page 111
USB Cable) Yes Is it charging properly Yes After turning on U302, U300 END NO Check an U100 SMT status by X-ray Exchange U100 or Change the Main board And Retest [ Charger Troubleshooting Flow ] Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 112
4. TROUBLE SHOOTING R304 U300 U302 [ Charging part ( Main PCB Front ) ] LGE Internal Use Only - 114 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 113
SHOOTING 4.12 USB Troubleshooting USB Initial sequence of KS20 is : USB connected to KS20 power on → VBUS_5.0V(Q400) go to 5V → MSM7200 48M PLL work → USB_DAT is triggered → USB_CTL_N go to 0V → USB work. Start Power is on? NO Go to power on trouble shooting YES NO Cable is inserted? Insert - LG LGKS20 | Operating Instructions - Page 114
4. TROUBLE SHOOTING C314 R308 47K VUSB_5.0V VCHG_5.0V C314 2.2u R309 10 1u C320 10K R310 [ USB part 1 ( Main PCB) ] Battery Charging LGE Internal Use Only [ USB part 2 ( Main PCB ) ] - 116 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 115
4. TROUBLE SHOOTING 4.13 SIM Detect Troubleshooting USIM Initial sequence of KS20 is : SIM_CLK,SIM_RST,SIM_IO triggered → VRUIM_3.0V go to Sub board End Check CN400 End Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 117 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 116
4. TROUBLE SHOOTING 1 2 3 5 6 7 1 VRUIM_3.0V 2 SIM_RST 3 SIM_CLK 7 SIM_IO VRUIM_3.0V SIM_RST SIM_CLK SIM_IO LGE Internal 1 G1 19 ST1 17 ST2 18 D706 1 2 Figure .USIM part schematics - 118 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 117
4. TROUBLE SHOOTING 4.14 Camera Troubleshooting Camera control signals are generated by MSM7200. 4.14.1 2M AF CAMERA Start Change the Sub board Change the Sub board END Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 119 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 118
4. TROUBLE SHOOTING 4.14.2 VGA CAMERA Start Check the camera connector and reconnect the camera Camera is OK? NO VCAM_2 U100 or Change the Main board And Retest END LGE Internal Use Only - 120 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 119
4. TROUBLE SHOOTING VCAM_2.6V CN601: 14,15,16,17,31,32 VCAM_1.8V CN601: 33, EUSY0263101 C720 0.01u BLED1 BLED2 BLED3 BLED4 FLED C721 C722 2.2u 2.2u VCAM_2.6V VCAM_1.8V Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 121 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 120
4. TROUBLE SHOOTING 4.15 Keypad Backlight Troubleshooting Key Pad ray Exchange U100 or Change the Main board And Retest VPWR VPWR Check battery Yes Change the Main board or Check the Key FPCB Power Keypad 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 121
) GO to power on trouble shooting Yes LCD display OK? No Change the LCD module END Yes LCD display OK? No Change the Main board END Yes LCD display OK? No Change the LCD FPCB END Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 123 - LGE - LG LGKS20 | Operating Instructions - Page 122
TROUBLE SHOOTING 4.17 Receiver Path MSM7200 EAR1_OP, EAR1_ON → R103, R104 → Analog Switch(U400) → R421, R420 → CN400 → CN602 → R751, R750 → L703, L702 → CN701 → Speaker Start Connect the phone - 124 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 123
4. TROUBLE SHOOTING R103, R104 Analog Switch SPK + Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 125 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 124
4. TROUBLE SHOOTING 4.18 Headset path MSM7200 HPH_R, HPH_L → C409, C406 → HEADSET AMP(U402) → R405, R404 → FB301, FB300 → CN300 (MMI Connector)→ Start Connect the phone to network equipment - 126 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 125
4. TROUBLE SHOOTING FB301 FB300 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 127 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 126
4. TROUBLE SHOOTING 4.19 Speaker phone path MSM7200 LINE_OP,LINE_ON → C402/R403, C401/R402 → Speaker AMP(U401) → Analog Switch(U400) → R421, R420 → CN400 → CN602 → R751, R750 L703, L702 → CN701 → Speaker Start Connect the phone to network equipment and setup call Setup 1KHz tone out Sine wave - LG LGKS20 | Operating Instructions - Page 127
4. TROUBLE SHOOTING Speaker Amplifier Analog Switch SPK + Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 129 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 128
4. TROUBLE SHOOTING 4.20 Main microphone MIC (OSF213-42DC) → CN602 → CN400 → C106 → MIC1P(MSM7200) Start Make a call board Change the MIC Work well? YES END LGE Internal Use Only - 130 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 129
4. TROUBLE SHOOTING MIC R102 C106 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 131 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 130
4. TROUBLE SHOOTING 4.21 Headset microphone HS MIC (18 pin Connector) → C105 → MIC2P(MSM7200) Start Make a call OK board Change the headset or Main board and retry. LGE Internal Use Only - 132 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 131
4. TROUBLE SHOOTING MIC Input R301 nEAR_DET C105 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 133 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 132
4. TROUBLE SHOOTING 4.22 Vibrator The PM7540 IC supports silent incoming-call alarms with its vibration motor driver. The vibration driver is a programmable voltage output that is Use Only - 134 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 133
4. TROUBLE SHOOTING Waveform : CN700, Vibrator Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 135 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 134
images to the handset. LGMDP supports Windows 2000/XP where the LG KS20 USB modem driver (Ver 1.0 or later) is installed. Additionally, LGMDP allows multi downloading up to 9 handsets at the same time. * KS20 does NOT use LG USB driver but LG KS20 USB driver. LG KS20 USB driver is used only - LG LGKS20 | Operating Instructions - Page 135
monitor it all the time. ➢ Automatically run Select Port When LGMDP starts When LGMDP starts, it will automatically select Select Port button to download new image file. Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 137 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 136
up. Check if state shows Enable for the port to be connected for downloading images. Then click on the Connect button. (The port number(COM7) is displayed when the application is ready for downloading. While the images are transmitted from PC to the handset, a progressive bar (Red box) indicating - LG LGKS20 | Operating Instructions - Page 137
reset in the handset. The user contents in the handset will be erased. If you want to reset all the user data back to the way they were before you started downloading downloading the selected individual image. Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service - LG LGKS20 | Operating Instructions - Page 138
5. DOWNLOAD 5.1.2.2 Choosing image files • Select the image folder, where all the image files are located, by clicking the path where the image files are located.) LGE Internal Use Only - 140 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 139
... button. The selected AMSS image will be downloaded to the handset from the path directory in the PC. Make phone may not work. (The file name shall be different from that of the file name in the snapshot.) Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service - LG LGKS20 | Operating Instructions - Page 140
desired NV file to be downloaded on the handset. To enable this simply downloading for. Otherwise click on the Yes button to continue downloading selected image file with options. LGE Internal Use Only - 142 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service - LG LGKS20 | Operating Instructions - Page 141
stored in the LGMDP installation directory. • Rebooting the handset and re-establishing the connection. The handset will go emergency mode. • Downloading the all images. Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 143 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 142
DOWNLOAD • Rebooting the handset and re-establishing the connection. • Restoring NV data which backed up in the Backing up process. User can also restore NV data using NV Default image selection. • Downloading process has completed successfully. LGE Internal Use Only - 144 - Copyright © 2007 LG - LG LGKS20 | Operating Instructions - Page 143
5. DOWNLOAD 5.1.3 Troubleshooting Download Errors 1) When the phone does not work after downloading has been completed. 5.1.3.1 When the phone does not work • Reboot the phone in the emergency mode (Turn off the KS20 and turn on wile pressing "SEND" + "Function" Key simultaneously) and then try to - LG LGKS20 | Operating Instructions - Page 144
images. The selected image will be downloaded to the handset from the path directory in the PC. After downloading images successfully, it will boot to normal mode. LGE Internal Use Only - 146 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 145
downloading using the USB hub is not recommendable. 2) If you see the message 'cal mode' after 'completing download', you must do NV restore and images download 4) Recommended that the AMSS and Windows OS Image have to be downloaded at the same time. 5) Erase EFS option will erase everything (nv - LG LGKS20 | Operating Instructions - Page 146
LLPPFF LLPPFF SSwwiittcchhpplleexxeerr RF Mobile SW GSM IMT PPMM77554400 USB 2 Data USIM TX,RX RX ADCs UMTS/HSDPA SBI USB) [Fig 2.1] KS20 RF Functional Block Diagram LGE Internal Use Only - 148 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service - LG LGKS20 | Operating Instructions - Page 147
6. BLOCK DIAGRAM [Table 2.1] RF Block Component Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 149 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 148
LLPPFF LLPPFF SSwwiittcchhpplleexxeerr RF Mobile SW GSM IMT PPMM77554400 USB 2 Data USIM TX,RX RX ADCs UMTS/HSDPA SBI USB) [Fig 2.2] RTR6275 & MSM7200 Interface Diagram LGE Internal Use Only - 150 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service - LG LGKS20 | Operating Instructions - Page 149
Control Enable GSM_PA_RAMP Power Amp Gain Control ANT_SEL 0,1,2,3 Ant Switch Module Mode Selection Comment UMTS, GSM900Tx/Rx, DCS Tx/Rx, PCS Tx/Rx Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 151 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 150
LGE Internal Use Only - 152 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 151
BT_PCM_SYNC BT_PCM_IN BT_PCM_OUT SDMC_DAT0 SDMC_DAT1 SDMC_DAT2 SDMC_DAT3 SDMC_CMD SDMC_CLK F 1 2 3 4 5 6 7 8 9 LG(42)-A-5505-10:01 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 153 - LGMC LG Electronics Inc. LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 152
SDRAM_D30 SDRAM_D31 VMSME_1.8V EBI2_DATA0 EBI2_DATA1 EBI2_DATA2 EBI2_DATA3 EBI2_DATA4 EBI2_DATA5 EBI2_DATA6 EBI2_DATA7 E VMSME_1.8V F C D E LG Electronics Inc. LGE Internal Use Only - 154 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 153
NA FI-D2012 C308 C309 C310 C311 D Main Battery Connector ISNS_P ISNS_M VBAT VPWR R308 47K and load caps close to PM7540 USB Switch C Differential lines, Line LG(42)-A-5505-10:01 LGMC LG Electronics Inc. Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service - LG LGKS20 | Operating Instructions - Page 154
1u C420 1u VREG_BT_1.5V VREG_FM_1.5V VBT_CORE_2.6V 2 3 4 5 6 7 8 9 FLASH LED VOUT LD400 LMFL2P010 EDLM0008803 FLED LGMC F C D E 4/5 LG Electronics Inc. LGE Internal Use Only - 156 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 155
91 R519 75 10dB R521 91 PWR_DET WCDMA_PA_R0 WCDMA_PA_ON F D Thermistor circuit deleted E 1 2 3 4 5 6 7 8 9 LG(42)-A-5505-10:01 LGMC LG Electronics Inc. Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 157 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 156
S LEDR1 LEDG1 KTK5132E D Q601 G S KTK5132E D Q602 G S 100K 100K 100K D R635 R636 R637 E 1 2 3 4 5 6 7 8 9 LG(42)-A-5505-10:01 LGMC LG Electronics Inc. LGE Internal Use Only - 158 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 157
L701 68nH 2 ENEY0003801 24-8000-002-000-829 RTC Battery 2V, 0.5mA NBL414R-F9J SBCL0001701 BAT700 VCOIN VA702 EVL5M02200 VA700 2 3 4 5 6 7 8 9 LG(42)-A-5505-10:01 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 159 - 11 12 13 14 - LG LGKS20 | Operating Instructions - Page 158
END Button KB103 KPD_COLUMN2 KPD_ROW0 EVLC14S02050 EVLC14S02050 D110 PRSB6.8C TOUCH SCREEN CONNECTOR CN101 G2 6 5 4 3 2 1 G1 D118 INSTPAR E 6 7 8 9 - 160 - LGMC LG Electronics Inc. Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 159
.6V 14 21 15 20 16 19 17 18 CAM_MCLK CAM_VSYNC CAM_HSYNC G2 F C C D D E E F 1 2 3 4 5 6 7 8 9 LG(42)-A-5505-10:01 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 161 - LGMC LG Electronics Inc. LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 160
LGE Internal Use Only - 162 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 161
8. BGA IC PIN MAP 8. BGA IC PIN MAP 8.1 MSM7200 (EUSY0318901) : U101-1, U101-2 Fig.1 MSM7200 Pin Function Map (Top View) Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 163 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 162
8. BGA IC PIN MAP MSM7200 (EUSY0318901) : U101-1, U101-2 : Us ed : Not us ed Fig.2 MSM7200 Pin Map (Bottom View) LGE Internal Use Only - 164 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 163
8. BGA IC PIN MAP 8.2 KAL009001M-D1YY (EUSY0316502) : U201 Fig.3 KAL009001M Pin Map (Top View) : Us ed : Us ed : Not us ed Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 165 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 164
8. BGA IC PIN MAP 8.3 PM7540 (EUSY0342201) : U304 Fig.4 PM7540 Pin Function Map (Top View) LGE Internal Use Only - 166 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 165
PM7540 (EUSY0342201) : U304 8. BGA IC PIN MAP : Us ed : Not us ed Fig.5 PM7540 Pin Map (Bottom View) Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 167 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 166
8. BGA IC PIN MAP 8.4 BCM2048SKUFBG (EUSY0319601) : U403 : Used : Not us ed Fig.4 BCM2048 Pin Map (Bottom View) LGE Internal Use Only - 168 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 167
U500 RTR6275 (UMTS/GSMTransceiver) Can't make a call Low Tx Power Low Rx Sensitivity No Service Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 169 - U503 ACPM-7381 UMTS PAM Low UMTS Tx Power U403 BCM2048 No Bluetooth/FM Radio Functions U501 - LG LGKS20 | Operating Instructions - Page 168
Power On No USB/USIM Function ANT400 Low Bluetooth Tx Power Low Bluetooth Rx Sensitivity X300(32.768kHz) RTC Reset U303 No USB Function U301 No Boot On No Display No Service U201(Memory) No Boot U300 No TA/USB Charging U302 No TA Charging - 170 - Copyright © 2007 LG Electronics. Inc. All right - LG LGKS20 | Operating Instructions - Page 169
Camera On No Backlight/Flash On X600 Can't make WLAN/Bluetooth Sleep Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes CN701 No Speaker/Receiver Sound CN600 No Touch/Camera Shutter/LED/SEND/ END/Power/Jog Key Functions - 171 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 170
9. PCB LAYOUT CN601 No 2M/VGA Camera Functions S700 No USIM/T-Flash Functions CN602 No LCD/Camera/WLAN/ Touch/Key/Speaker/ Vibrator Functions CN603 Low WLAN Tx Power Low WLAN Rx Sensitivity LGE Internal Use Only CN700 No Vibrator Function M600 No WLAN Function - LG LGKS20 | Operating Instructions - Page 171
9. PCB LAYOUT CN103 No 2M/VGA Camera Functions CN101 No VGA Camera Function CN102 No 2M AF Camera Function Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 173 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 172
LD102 No Key LED On KB104 No SEND Key CN100 Tx Mute No Record Function CN101 No Touch Function LGE Internal Use Only - 174 - LD100 No Indicator LED On KB105 No Power On No Power Low WLAN Rx Sensitivity Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 173
9. PCB LAYOUT Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 175 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 174
LGE Internal Use Only - 176 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 175
.DLL DLL_PwrControlD.dll Dll_SerialATD.dll LG_CL_019.dll PwrSupply_Cmd.xml Diag_NV6280.dll Diag_NV.dll : Directory : File Debug Auto Cal CalAuto KS20 KS20 KS20 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 177 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 176
.dll GuiTk115d.dll HK_33.exe ShieldBox_DllD.dll Model KS20 LG_NsTest_E5515C_241.dll LG_RfTest_E5515C_108.dll QMSL_MSVC6R.dll Log AutoSetup_001.xml Spec_FullBand_013.xml LGE Internal Use Only - 178 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 177
.DLL MFCD42D.DLL MFCN42D.DLL MFCO42D.DLL MSVCP60D.DLL MSVCRTD.DLL Vsflex7L.ocx vsflex7l_ocx_regist.bat Auto Cal CalAuto LG_UI_Qu6275_004.dll Multi_HK.reg KS20 KS20 KS20 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 179 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 178
use HOT KIMCHI 1 2 3 * Procedure 1. Click "Logic Operation" of "SETTING" menu bar 2. Select "UART Port" that PC can communicate with the phone 3. Select "LOGIC MODE" that you want - Logic Mode -> 1: Calibration Only 2: Auto Test Only 3: Calibration + Auto LGE Internal Use Only - 180 - Copyright - LG LGKS20 | Operating Instructions - Page 179
9. Calibration & RF Auto Test Program (Hot Kimchi) 5 Click "Start" 4 Select "KS20" * Procedure 4. Select the model name "KS20" 5. Click "Start" button Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 181 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 180
Phone Test Mode _ 3G smart Phone KS20 1. Run Dialer, then insert "2676625720#" by tapping keypad 2. Tap 3. Device Test 3. Tap 6. Q_Test Program 4. Tap PTM(Phone Test Mode) Button. LGE Internal Use Only - 182 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service - LG LGKS20 | Operating Instructions - Page 181
Phone KS20(1) Item Order * Phone Test mode (1) Camera Test Description 1 Internal Camera Off 2 Internal Camera On 3 Internal(Front) Recording & Save To start, press "Send" button Internal Camera Record for 3 seconds. Recorded file is saved in /My Documents/My Pictures Copyright © 2007 LG - LG LGKS20 | Operating Instructions - Page 182
Test Mode _ 3G smart Phone KS20 Phone Test Mode Scenario_ 3G smart Phone KS20(2) Item (1) Camera Test Order 4 External Camera Off 5External Camera On 6 "SEND" button LGE Internal Use Only - 184 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 183
Test Mode _ 3G smart Phone KS20 Phone Test Mode Scenario_ 3G smart Phone KS20 Case(3) Item (2) External Memory Test Order 1 end 5) Blue LED ON 6) If OK, press ìS end Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 185 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 184
Phone KS20 Phone Test Mode Scenario_ 3G smart Phone KS20 Case(4) Item Order (5) Vibrator Test 1 Vibrator On Break 2 Vibrator Off Description Vibrating by pressing "Send" Key LGE Internal Use Only - 186 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service - LG LGKS20 | Operating Instructions - Page 185
3G smart Phone KS20 Case(5) Item (6) Key Press Test Order Description OK - Press a key that Red arrow indicate (7) Acoustic Loop Test (8) Sound Test Break Break 1. Enable Handset acoustic loop Test 2. Enable Headset acoustic loop Test Ringtone(MP3) is played repeatly. Copyright © 2007 LG - LG LGKS20 | Operating Instructions - Page 186
LGE Internal Use Only - 188 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 187
38 66 36 58 65 68 54 37 56 48 50 52 53 46 69 45 76 78 49 51 35 47 57 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 189 - MGAD0137801 LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 188
R S D' B' H Y T V U Z C' A' W L K M O X E N A B C F' E' D' C' B' A' Z Y X W V U T S R F' Q P O N M L K J I H G F E D C B A LGE Internal Use Only - 190 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 189
Description GSM,BAR/FILP Part Number TGSM0048902 Spec 2 AAAY00 ADDITION AAAY0257802 3 MLAZ00 LABEL COMPLEX, (empty), , , , , 5 MLEA00 LOCKER,BATTERY MLEA0037401 MOLD, PC LUPOY SC-1004A, , , , , LG Electronics. Inc. All right reserved. Only for training and service purposes - - LG LGKS20 | Operating Instructions - Page 190
4 MPBZ01 PAD 4 MTAB00 TAPE,PROTECTION 4 MWAC00 WINDOW,LCD 7 M600 MODULE,ETC Part Number Spec MTAZ0184401 COMPLEX, (empty), , , , , MTAZ0184501 COMPLEX, (empty), , , , , Use Only - 192 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 191
No. Description SACY00 PCB ASSY,FLEXIBLE Part Number SACY0060901 MAIN FPCB Spec 5 SACE00 PCB ASSY,FLEXIBLE,SMT SACE0055401 6 SACC00 PCB ASSY, Black Black Remark Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 193 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 192
6 SAJC00 PCB ASSY,SUB,SMT BOTTOM 7 BAT700 BATTERY,CELL,LITHIUM 7 C609 CAP,CERAMIC,CHIP 7 C610 CAP, EMI/POWER 7 L600 INDUCTOR,SMD,POWER Part Number Spec ERHY0003301 100 ohm,1/16W ,J ,1005 ,R/TP ERHY0003301 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 193
,CHIP 7 C622 CAP,CERAMIC,CHIP 7 C625 CAP,CERAMIC,CHIP Part Number Spec ELCH0004705 8.2 nH,J ,1005 ,R/TP , ELCH0005019 68 nH,J ,1005 ,R/ ,R/TP Color Remark Black Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 195 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 194
7 D705 DIODE,TVS 7 D706 DIODE,TVS 7 D707 DIODE,TVS 7 D708 DIODE,TVS Part Number Spec ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP ECCH0004904 1 uF,6.3V ,K ,X5R LGE Internal Use Only - 196 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 195
CHIP,MAKER 7 R626 RES,CHIP,MAKER 7 R635 RES,CHIP,MAKER Part Number Spec EDTY0008501 TFSC ,5 V,50 W,R/TP ,small size EDTY0008501 TFSC ,5 V,50 W,R/ ,R/TP Color Remark Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 197 - LGE Internal Use - LG LGKS20 | Operating Instructions - Page 196
OSCILLATOR 6 SPJY00 PCB,SUB 4 SJMY00 VIBRATOR,MOTOR Part Number Spec ERHZ0000406 100 Kohm,1/16W ,J ,1005 ,R/TP ERHZ0000406 100 Kohm,1/ , , , , Color Remark LGE Internal Use Only - 198 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 197
CHIP,MAKER 6 C204 CAP,CERAMIC,CHIP 6 C205 CAP,CERAMIC,CHIP Part Number Spec Color Remark SNGF0024802 3.0 ,-2 dBd, ,GSM900/1800/1900+WCDMA2100, INTERNAL, GOLD TP Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 199 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 198
6 C320 CAP,CHIP,MAKER 6 C321 CAP,CHIP,MAKER 6 C322 CAP,CHIP,MAKER Part Number Spec ECZH0003103 0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP ECZH0003103 0.1 uF,10V ,K ,X7R LGE Internal Use Only - 200 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 199
C357 CAP,CERAMIC,CHIP 6 C358 CAP,CERAMIC,CHIP 6 C360 CAP,CERAMIC,CHIP Part Number Spec ECZH0003103 0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP ECZH0003103 0.1 uF,10V ,K , Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 201 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 200
,MAKER 6 R104 RES,CHIP,MAKER 6 R105 RES,CHIP,MAKER 6 R106 RES,CHIP,MAKER Part Number Spec ECZH0001215 1 uF,10V ,K ,X5R ,TC ,1005 ,R/TP ECZH0003103 0.1 uF,10V ,K ,X7R Internal Use Only - 202 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 201
6 U401 IC 6 U402 IC 6 X300 X-TAL Part Number Spec ERHZ0000201 100 ohm,1/16W ,F ,1005 ,R/TP ERHZ0000404 1 Kohm,1/ Driver EXXY0018701 32.768 KHz,20 PPM,12.5 pF,70 Kohm,SMD ,3.2*1.5*0.9 , Color Remark Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service - LG LGKS20 | Operating Instructions - Page 202
EXPLODED VIEW & REPLACEMENT PART LIST Level Location No. Description 6 X400 X-TAL Part Number Spec EXXY0024401 26 MHz,10 PPM,10 pF,.5 ohm,SMD ,32*25*0.6 ,. ,. ,. LGE Internal Use Only - 204 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 203
6 C549 CAP,CHIP,MAKER 6 C550 CAP,CERAMIC,CHIP 6 C551 CAP,CERAMIC,CHIP Part Number Spec ECZH0000830 33 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP ECZH0000830 33 pF,50V ,J , Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 205 - LGE Internal Use Only - LG LGKS20 | Operating Instructions - Page 204
6 FL500 FILTER,SEPERATOR 6 FL501 FILTER,SAW 6 FL502 FILTER,SAW Part Number Spec ECCH0000143 1 nF,50V,K,X7R,HD,1005,R/TP ECZH0000830 33 pF,50V ,J ,NP0 Remark LGE Internal Use Only - 206 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 205
RES,CHIP,MAKER 6 R406 RES,CHIP,MAKER 6 R420 RES,CHIP,MAKER Part Number Spec 1950 MHz,2140 MHz,1.6 dB,2.0 dB,53 dB,44 SDMY0001301 dB,3.0*2.5*1.2 ,SMD , TP Color Remark Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 207 - LGE Internal - LG LGKS20 | Operating Instructions - Page 206
6 VA302 VARISTOR 6 X500 VCTCXO 6 ZD300 DIODE,TVS Part Number Spec ERHZ0000434 1 ohm,1/16W ,J ,1005 ,R/TP ERHZ0000212 12 Kohm,1/16W ,PB-FREE Color Remark LGE Internal Use Only - 208 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - LG LGKS20 | Operating Instructions - Page 207
BATTERY PACK,LIPOLYMER 3 SGDY00 DATA CABLE 3 SGEY00 EAR PHONE/EAR Spec Color Remark ADEY0009710 KS20 CD assy for SFR Without Color MCHZ0041101 COMPLEX, (empty), , , , , SILVER SNOW MEAY0000401 PRINTING, (empty), , , , , Without Color SBPP0023301 3.7 V,1050 mAh,1 CELL,PRISMATIC ,KS20 - LG LGKS20 | Operating Instructions - Page 208
Note - LG LGKS20 | Operating Instructions - Page 209
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 |
- 3 -
1. INTRODUCTION
..................................
5
1.1 Purpose
......................................................
5
1.2 Regulatory Information
...............................
5
2. PERFORMANCE
..................................
7
2.1 System Overview
.........................................
7
2.2 Usable environment
.....................................
8
2.3 Radio Performance
......................................
8
2.4 Current Consumption
.................................
14
2.5 RSSI BAR
..................................................
14
2.6 Battery BAR
...............................................
15
2.7 Sound Pressure Level
...............................
16
2.8 Charging
....................................................
16
3. TECHNICAL BRIEF
............................
17
3.1 General Description
...................................
17
3.2 GSM Mode
.................................................
19
3.3 UMTS Mode
...............................................
23
3.4 LO generation and distribution circuits
......
25
3.5 Off-chip RF Components
...........................
25
3.6 Digital Baseband(DBB/MSM7200)
............
35
3.7 Hardware Architecture
...............................
37
3.8. Subsystem(MSM7200)
.............................
39
3.9. Power Block
..............................................
42
3.10. External memory interface
......................
47
3.11. H/W Sub System
....................................
49
3.12. Main Features
.........................................
76
4. TROUBLE SHOOTING
.......................
82
4.1 RF Component
..........................................
82
4.2 SIGNAL PATH_UMTS RF
.........................
85
4.3 SIGNAL PATH_GSM RF
...........................
86
4.4 Checking VCTCXO Block
..........................
87
4.5 Checking Front-End Module Block
............
89
4.6 Checking UMTS Block
...............................
91
4.7 Checking GSM Block
.................................
96
4.8 Checking Bluetooth Block
........................
102
4.9 Checking WLAN Block
.............................
104
4.10 Power ON Troubleshooting
...................
108
4.11 Charger Troubleshooting
.......................
110
4.12 USB Troubleshooting
.............................
113
4.13 SIM Detect Troubleshooting
..................
115
4.14 Camera Troubleshooting
.......................
117
4.15 Keypad Backlight Troubleshooting
........
120
4.16 Main LCD Troubleshooting
....................
121
4.17 Receiver Path
........................................
122
4.18 Headset path
.........................................
124
4.19 Speaker phone path
..............................
126
4.20 Main microphone
...................................
128
4.21 Headset microphone
..............................
130
4.22 Vibrator
..................................................
132
5. DOWNLOAD
.....................................
133
5.1 KS20 DOWNLOAD
..................................
133
6. BLOCK DIAGRAM
...........................
146
6.1 GSM & UMTS RF Block
..........................
146
6.2 Interface Diagram
....................................
148
7. Circuit Diagram
................................
153
8. BGA IC PIN MAP
..............................
163
8. PCB LAYOUT
...................................
169
9. Calibration & RF Auto Test
Program (Hot Kimchi)
.....................
177
9.1 Configuration of HOT KIMCHI
.................
177
9.2 How to use HOT KIMCHI
.........................
180
10. Phone Test Mode _ 3G smart
Phone KS20
...................................
182
11. EXPLODED VIEW & REPLACEMENT
PART LIST
.....................................
189
11.1 EXPLODED VIEW
................................
189
11.2 Replacement Parts
<Mechanic component>
.......................
191
<Main component>
...............................
193
11.3 Accessory
.............................................
209
Table Of Contents
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc.
All right reserved.
Only for training and service purposes