Service Manual
Page 16
...they share common baseband circuits (with SBI2-controlled parameters. All right reserved. Only for details. EGSM900, DCS1800, and PCS1900 operation is time division duplexed, so only the receiver or transmitter is active at one time), switches are used to improve common... switch module). Copyright © 2008 LG Electronics. TECHNICAL BRIEF 3.2 GSM Mode 3.2.1 GSM Receiver The Dual-mode KE990/KE990c's receiver functions are split between the complementary signals is accomplished in the switch module. 2 The RFIC operating modes and circuit parameters are connected directly...
...they share common baseband circuits (with SBI2-controlled parameters. All right reserved. Only for details. EGSM900, DCS1800, and PCS1900 operation is time division duplexed, so only the receiver or transmitter is active at one time), switches are used to improve common... switch module). Copyright © 2008 LG Electronics. TECHNICAL BRIEF 3.2 GSM Mode 3.2.1 GSM Receiver The Dual-mode KE990/KE990c's receiver functions are split between the complementary signals is accomplished in the switch module. 2 The RFIC operating modes and circuit parameters are connected directly...
Service Manual
Page 20
... used to support all RFIC synthesizers as well as clock generation functions within the ESM6270 IC require a reference voltage for proper operation and sufficient accuracy. These GPIOs are turned on this reference. A two-pole RC lowpass filter is ESM-selected by the ...Connecting the PM6635 IC REF_OUT directly to be ANT_SEL0 and ANT_SEL1 respectively. [Table 3.4.2] Front End Module control logic Copyright © 2008 LG Electronics. Inc. All right reserved. This warm-up interval before most other circuits are programmed to the ESM6270 IC GSM_PA_PWR_CTL_REF provides this ...
... used to support all RFIC synthesizers as well as clock generation functions within the ESM6270 IC require a reference voltage for proper operation and sufficient accuracy. These GPIOs are turned on this reference. A two-pole RC lowpass filter is ESM-selected by the ...Connecting the PM6635 IC REF_OUT directly to be ANT_SEL0 and ANT_SEL1 respectively. [Table 3.4.2] Front End Module control logic Copyright © 2008 LG Electronics. Inc. All right reserved. This warm-up interval before most other circuits are programmed to the ESM6270 IC GSM_PA_PWR_CTL_REF provides this ...
Service Manual
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... digital or analog I/Os, bidirectional I/Os, or current sinks. differential operation (drives external 8 Ω speakers with a large center slug for ...driver, and a reference voltage buffer. ■ Highly integrated functionality in 100 mV increments - All right reserved. Real time clock for training and service... electrical ground, mechanical stability, and thermal relief Copyright © 2008 LG Electronics. USB-OTG transceiver for triggering power-on sequencing, including the ...for full-speed (12 Mb/s) and low speed (1.5 Mb/s) interfacing of the ESM device to 18 external inputs - ...
... digital or analog I/Os, bidirectional I/Os, or current sinks. differential operation (drives external 8 Ω speakers with a large center slug for ...driver, and a reference voltage buffer. ■ Highly integrated functionality in 100 mV increments - All right reserved. Real time clock for training and service... electrical ground, mechanical stability, and thermal relief Copyright © 2008 LG Electronics. USB-OTG transceiver for triggering power-on sequencing, including the ...for full-speed (12 Mb/s) and low speed (1.5 Mb/s) interfacing of the ESM device to 18 external inputs - ...
Service Manual
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...GSM_PA_BAND MODE LOW HIGH GSM850/900 DCS/PCS [Figure 3.4.4] GSM PAM Schematic R112 100 R111 68 10 dB R113 100 DCS_PCS_TX R114 68 R118 100 10dB R119 100 GSM_TX Copyright © 2008 LG Electronics. Only for GSM operations, and serves as the AM/AM path in a Polar Loop environment at ...EDGE class E2+ operation while maintaining high GSM/GPRS efficiency. This eliminates the need for...
...GSM_PA_BAND MODE LOW HIGH GSM850/900 DCS/PCS [Figure 3.4.4] GSM PAM Schematic R112 100 R111 68 10 dB R113 100 DCS_PCS_TX R114 68 R118 100 10dB R119 100 GSM_TX Copyright © 2008 LG Electronics. Only for GSM operations, and serves as the AM/AM path in a Polar Loop environment at ...EDGE class E2+ operation while maintaining high GSM/GPRS efficiency. This eliminates the need for...
Service Manual
Page 27
Copyright © 2008 LG Electronics. TECHNICAL BRIEF 3.5 Digital Baseband (DBB/ESM6270) 3.5.1 General Description A. All right reserved. 3. GSM/GPRS/EDGE, and GPS ■ High-performance ARM926EJ-S¢, running at up ... digital camera module with video front-end (VFE) image processing ■ True 3D graphics for advanced wireless gaming ■ SecureMSM v2.0 includes support for multimode operation - Features (ESM6270) ■ Support for SIM-lock and IMEI integrity, and Qfuse ■ Audio on par with portable music players ■ Vocoder support (AMR, FR...
Copyright © 2008 LG Electronics. TECHNICAL BRIEF 3.5 Digital Baseband (DBB/ESM6270) 3.5.1 General Description A. All right reserved. 3. GSM/GPRS/EDGE, and GPS ■ High-performance ARM926EJ-S¢, running at up ... digital camera module with video front-end (VFE) image processing ■ True 3D graphics for advanced wireless gaming ■ SecureMSM v2.0 includes support for multimode operation - Features (ESM6270) ■ Support for SIM-lock and IMEI integrity, and Qfuse ■ Audio on par with portable music players ■ Vocoder support (AMR, FR...
Service Manual
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... a QUALCOMM proprietary serial bus interface (SBI) the ARM926EJ-S configures and controls the functionality of four Rx timeslots per frame Copyright © 2008 LG Electronics. All right reserved. Support modes conform to release '99 specifications of the sub-feature. ■ Voice features ❏ FR ❏...CS data and fax ❏ No sub-rates are supported. 3.6.3 GPRS features ■ Packet switched data (GPRS) ❏ DTM (Simple Class A) operation ❏ Multi-slot class 12 data services ❏ CS schemes: CS1, CS2, CS3, and CS4 ❏ GEA1, GEA2, and GEA3 ciphering &#...
... a QUALCOMM proprietary serial bus interface (SBI) the ARM926EJ-S configures and controls the functionality of four Rx timeslots per frame Copyright © 2008 LG Electronics. All right reserved. Support modes conform to release '99 specifications of the sub-feature. ■ Voice features ❏ FR ❏...CS data and fax ❏ No sub-rates are supported. 3.6.3 GPRS features ■ Packet switched data (GPRS) ❏ DTM (Simple Class A) operation ❏ Multi-slot class 12 data services ❏ CS schemes: CS1, CS2, CS3, and CS4 ❏ GEA1, GEA2, and GEA3 ciphering &#...
Service Manual
Page 34
... Summary of ESM6270 device features 3.6.9 Serial Bus Interface(SBI) The ESM6270 device's SSBI is designed specifically to be configured for different operating modes and for minimum power consumption, extending battery life in Standby mode. Inc. The SSBI also controls DC baseband offset errors. ...All right reserved. Copyright © 2008 LG Electronics. 3. Only for QUALCOMM's RTR6235, RFR6275 and PM6635 ASICs. LGE Internal Use Only Using the SSBI, the RTR6235, RFR6275, and ...
... Summary of ESM6270 device features 3.6.9 Serial Bus Interface(SBI) The ESM6270 device's SSBI is designed specifically to be configured for different operating modes and for minimum power consumption, extending battery life in Standby mode. Inc. The SSBI also controls DC baseband offset errors. ...All right reserved. Copyright © 2008 LG Electronics. 3. Only for QUALCOMM's RTR6235, RFR6275 and PM6635 ASICs. LGE Internal Use Only Using the SSBI, the RTR6235, RFR6275, and ...
Service Manual
Page 35
...CODEC integrates the microphone and earphone amplifiers into the ESM6270 device, reducing the external component count to the ESM6270 device determine the overall operating mode of the RFR6275, RTR6235, and PM6635 devices. 3.6.13 Mode Select and JTAG Interfaces The mode pins to just a few ...passive components. Copyright © 2008 LG Electronics. In addition, the QDSP4000 has modules to support the desired functionality. 3.6.12 ARM Microprocessor subsystem The ESM6270 device uses an embedded ...
...CODEC integrates the microphone and earphone amplifiers into the ESM6270 device, reducing the external component count to the ESM6270 device determine the overall operating mode of the RFR6275, RTR6235, and PM6635 devices. 3.6.13 Mode Select and JTAG Interfaces The mode pins to just a few ...passive components. Copyright © 2008 LG Electronics. In addition, the QDSP4000 has modules to support the desired functionality. 3.6.12 ARM Microprocessor subsystem The ESM6270 device uses an embedded ...
Service Manual
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... Inc. All right reserved. Only for time-critical information. Major power components are within acceptable operational limits, and coordinates battery and coin cell recharging while maintaining the handset electronics supply voltages. and generates all the regulated voltages needed to ...accepts power from a common trimmed voltage reference. Copyright © 2008 LG Electronics. It monitors and controls the power sources, detecting which sources are applied, verifying that they are : PM6635 : Phone power supply AAT3169 : LCD Backlight/Flash charge pump 3.7.2 PM6635 The PM6635...
... Inc. All right reserved. Only for time-critical information. Major power components are within acceptable operational limits, and coordinates battery and coin cell recharging while maintaining the handset electronics supply voltages. and generates all the regulated voltages needed to ...accepts power from a common trimmed voltage reference. Copyright © 2008 LG Electronics. It monitors and controls the power sources, detecting which sources are applied, verifying that they are : PM6635 : Phone power supply AAT3169 : LCD Backlight/Flash charge pump 3.7.2 PM6635 The PM6635...
Service Manual
Page 47
to provide an efficient interconnect between the mobile phone and a personal computer (PC). Schematic of Transceiver USB_Power From Host(PC) USB Data+ to Host USB Data- TECHNICAL BRIEF 3.9.2.3 USB The ESM6270 device ... USB_D_P 19 USB_SE0 20 USB_D_M 21 GP1_DRV_N(MPP7) PM_INT_N PS_HOLD USB_DAT USB_SE0 USB_OE_N MSM_MICROSD_CMD MSM_MICROSD_DATA[0] Figure. Copyright © 2008 LG Electronics. All right reserved. The USB Specification Revision 1.1 defines two speeds of operation, namely low-speed (1.5 Mbps) and full-speed (12 Mbps), both of a peripheral as a peripheral with the USB...
to provide an efficient interconnect between the mobile phone and a personal computer (PC). Schematic of Transceiver USB_Power From Host(PC) USB Data+ to Host USB Data- TECHNICAL BRIEF 3.9.2.3 USB The ESM6270 device ... USB_D_P 19 USB_SE0 20 USB_D_M 21 GP1_DRV_N(MPP7) PM_INT_N PS_HOLD USB_DAT USB_SE0 USB_OE_N MSM_MICROSD_CMD MSM_MICROSD_DATA[0] Figure. Copyright © 2008 LG Electronics. All right reserved. The USB Specification Revision 1.1 defines two speeds of operation, namely low-speed (1.5 Mbps) and full-speed (12 Mbps), both of a peripheral as a peripheral with the USB...
Service Manual
Page 60
... clips, up to 30 fps CIF resolution. AVI file format with MP3 audio. • Player for flash, optical zoom,focus, shutter and iris. • Camcorder operation as a DivX recorder /player at QCIF 15 fps (full-duplex). • MIDI player (for melodies with 3GPP standards, including support for Mobile XMF for ring...; Audio stereo recorder player MP3/WMA • ID3 tags display • Spectral bars • Lyrics display • Equalizer • 3D Surround Audio Copyright © 2008 LG Electronics.
... clips, up to 30 fps CIF resolution. AVI file format with MP3 audio. • Player for flash, optical zoom,focus, shutter and iris. • Camcorder operation as a DivX recorder /player at QCIF 15 fps (full-duplex). • MIDI player (for melodies with 3GPP standards, including support for Mobile XMF for ring...; Audio stereo recorder player MP3/WMA • ID3 tags display • Spectral bars • Lyrics display • Equalizer • 3D Surround Audio Copyright © 2008 LG Electronics.
Service Manual
Page 123
... is asserted → TCXO_BT 19.2MHz is asserted → Bluetooth ON → BT_TX_RX_N is High → BT serial interface control is operated (SBST / SBCK / SBDT) C800 NA BT_ANT BT_GND R800 0 L800 NA 12MHz BT_CLK C801 1000p C803 C804 1u 1u PGND4 PGND3 PGND2 PGND1...9 CLK_REF 3 VCC_OUT 2 VDD_INT 10 VDD_MSM 14 VDD_BAT SBST SBCK 4 11 SBDT 12 SYNC_DET_TX_EN 5 13 RX_BB_TX_BB 7 XTAL_IN GND4 GND3 GND2 GND1 BLUETOOTH LG INNOTEK TP800 TP801 TP802 BT_SBST BT_SBCK BT_SBDT R807 0 C802 1000p BT_TX_RX_N BT_DATA TCXO_BT 19.2MHz R808 10K R809 10K 1 6 15 8 17 20 19...
... is asserted → TCXO_BT 19.2MHz is asserted → Bluetooth ON → BT_TX_RX_N is High → BT serial interface control is operated (SBST / SBCK / SBDT) C800 NA BT_ANT BT_GND R800 0 L800 NA 12MHz BT_CLK C801 1000p C803 C804 1u 1u PGND4 PGND3 PGND2 PGND1...9 CLK_REF 3 VCC_OUT 2 VDD_INT 10 VDD_MSM 14 VDD_BAT SBST SBCK 4 11 SBDT 12 SYNC_DET_TX_EN 5 13 RX_BB_TX_BB 7 XTAL_IN GND4 GND3 GND2 GND1 BLUETOOTH LG INNOTEK TP800 TP801 TP802 BT_SBST BT_SBCK BT_SBDT R807 0 C802 1000p BT_TX_RX_N BT_DATA TCXO_BT 19.2MHz R808 10K R809 10K 1 6 15 8 17 20 19...
Service Manual
Page 125
...All right reserved. TROUBLE SHOOTING 4.15 Touch Screen trouble Touch Initial sequence of KE990 is : LCD_VDD_2.8V(C701) goes to 2.8V → TOUCH_PENIRQ_N(R702),TOUCH_I2C_SCL(R703) & TOUCH_I2C_SDA(R704) go to high Touch operation of KE990 is : A finger is touching on the screen → TOUCH_PENIRQ_N is low... → I2C is connected → A finger is took off from the Screen → TOUCH_PENIRQ_N is high → I2C is not connected. Touch F PCB Connector Copyright © 2008 LG Electronics....
...All right reserved. TROUBLE SHOOTING 4.15 Touch Screen trouble Touch Initial sequence of KE990 is : LCD_VDD_2.8V(C701) goes to 2.8V → TOUCH_PENIRQ_N(R702),TOUCH_I2C_SCL(R703) & TOUCH_I2C_SDA(R704) go to high Touch operation of KE990 is : A finger is touching on the screen → TOUCH_PENIRQ_N is low... → I2C is connected → A finger is took off from the Screen → TOUCH_PENIRQ_N is high → I2C is not connected. Touch F PCB Connector Copyright © 2008 LG Electronics....
Service Manual
Page 168
FM radio operation - Inc. All right reserved. PCB LAYOUT - LGE Internal Use Only 9. Headset operation - LCD backlight charge pump Copyright © 2008 LG Electronics. Over voltage protection - Only for training and service purposes - 169 -
FM radio operation - Inc. All right reserved. PCB LAYOUT - LGE Internal Use Only 9. Headset operation - LCD backlight charge pump Copyright © 2008 LG Electronics. Over voltage protection - Only for training and service purposes - 169 -
Service Manual
Page 169
Check the battery voltage and Outputs of LDOs-Rx operation - Headset, speaker operation - Check the frequency (19.2MHz) - Inc. Check the TA and bettery - Only for training and service purposes Check S/W download - GSM TX amplifier operation - Camcorder, Camera operation - GSM, WCDMA TX/RX operation LGE Internal Use Only - 170 - - PCB LAYOUT - 1.0V, 1.2V power supply - Power management - 9. RX, TX switching selection Copyright © 2008 LG Electronics. Check the frequency (27MHz) - All right reserved.
Check the battery voltage and Outputs of LDOs-Rx operation - Headset, speaker operation - Check the frequency (19.2MHz) - Inc. Check the TA and bettery - Only for training and service purposes Check S/W download - GSM TX amplifier operation - Camcorder, Camera operation - GSM, WCDMA TX/RX operation LGE Internal Use Only - 170 - - PCB LAYOUT - 1.0V, 1.2V power supply - Power management - 9. RX, TX switching selection Copyright © 2008 LG Electronics. Check the frequency (27MHz) - All right reserved.
Service Manual
Page 172
Click SETTING in menu, and logic operation in LOGIC MODE (means calibration alone) 2. Copyright © 2008 LG Electronics. Inc. All right reserved. Choose "1" in sub-menu. LGE Internal Use Only Select the model name(KE990, KE998, KE990c, or KE990D) which you want in list box. 3. Calibration... Auto Test Program (Hot Kimchi) 10.1 Usage of Hot-Kimchi 10.1.1 RF Calibration Calibration Only Model Name KE990/KE990c * Procedure 1. Click Start button to calibrate a phone. Only for training and service purposes - 173 - 10. Calibration & RF Auto Test Program (Hot Kimchi) 10.
Click SETTING in menu, and logic operation in LOGIC MODE (means calibration alone) 2. Copyright © 2008 LG Electronics. Inc. All right reserved. Choose "1" in sub-menu. LGE Internal Use Only Select the model name(KE990, KE998, KE990c, or KE990D) which you want in list box. 3. Calibration... Auto Test Program (Hot Kimchi) 10.1 Usage of Hot-Kimchi 10.1.1 RF Calibration Calibration Only Model Name KE990/KE990c * Procedure 1. Click Start button to calibrate a phone. Only for training and service purposes - 173 - 10. Calibration & RF Auto Test Program (Hot Kimchi) 10.
Service Manual
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... Result File's name type. LGE Internal Use Only - 174 - Click SETTING in menu, and logic operation in a real-time. - If you choose "TIME", the saved files' name is saved in sub-menu. - Copyright © 2008 LG Electronics. All right reserved. You can use S/B1 for training and service purposes 10. Only for...
... Result File's name type. LGE Internal Use Only - 174 - Click SETTING in menu, and logic operation in a real-time. - If you choose "TIME", the saved files' name is saved in sub-menu. - Copyright © 2008 LG Electronics. All right reserved. You can use S/B1 for training and service purposes 10. Only for...
