Service Manual
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...use . LGE Internal Use Only 1. System users are responsible for the security of the phones or compatibility with your telecommunications system. D. Copyright © 2008 LG Electronics. The manufacturer will prevent unauthorized use of commoncarrier telecommunication service of facilities accessed through ...the user, allowing the user to take appropriate steps to maintain telephone service. Maintenance Limitations Maintenance limitations on the phones must be done. INTRODUCTION 1. If these changes could reasonably be risks of telecommunications system by the manufacturer or its...
...use . LGE Internal Use Only 1. System users are responsible for the security of the phones or compatibility with your telecommunications system. D. Copyright © 2008 LG Electronics. The manufacturer will prevent unauthorized use of commoncarrier telecommunication service of facilities accessed through ...the user, allowing the user to take appropriate steps to maintain telephone service. Maintenance Limitations Maintenance limitations on the phones must be done. INTRODUCTION 1. If these changes could reasonably be risks of telecommunications system by the manufacturer or its...
Service Manual
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... by the Following information is ESD handling: sign. • Service personnel should ground themselves by local regulatory agencies. Interference and Attenuation A phone may look slightly different. Copyright © 2008 LG Electronics. Pictures The pictures in these protective packages until these agencies, you may cause problems. H. All right reserved. Only for illustrative purposes...
... by the Following information is ESD handling: sign. • Service personnel should ground themselves by local regulatory agencies. Interference and Attenuation A phone may look slightly different. Copyright © 2008 LG Electronics. Pictures The pictures in these protective packages until these agencies, you may cause problems. H. All right reserved. Only for illustrative purposes...
Service Manual
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Only for Buzzer Function) Music Player Video Player Camcorder Voice Recording Speaker Phone mode Support Travel Adapter CDROM Stereo Headset Data Cable T-Flash (External Memory) Feature Alphanumeric Key : 12 Function Key : 14 Side Key : 4 Total No..., PWR/END With Graphic EQ Yes Yes Yes Optional Yes Optional Yes Optional Copyright © 2008 LG Electronics. Inc. 2. LGE Internal Use Only All right reserved. PERFORMANCE Item Keypad ANT System connector Ear Phone Jack PC synchronization Memory Speech coding Data & Fax Vibrator Blue Tooth MIDI(for training and service purposes...
Only for Buzzer Function) Music Player Video Player Camcorder Voice Recording Speaker Phone mode Support Travel Adapter CDROM Stereo Headset Data Cable T-Flash (External Memory) Feature Alphanumeric Key : 12 Function Key : 14 Side Key : 4 Total No..., PWR/END With Graphic EQ Yes Yes Yes Optional Yes Optional Yes Optional Copyright © 2008 LG Electronics. Inc. 2. LGE Internal Use Only All right reserved. PERFORMANCE Item Keypad ANT System connector Ear Phone Jack PC synchronization Memory Speech coding Data & Fax Vibrator Blue Tooth MIDI(for training and service purposes...
Service Manual
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...labove. Only for training and service purposes - 13 - All right reserved. power) - Ringer set as ringer. 2. Inc. LGE Internal Use Only Backlight of phone set off . Test distance set as 50 cm Fast Charge : < 600 mA Slow Charge: < 60 mA Antenna Bar Number Power 4 -90 dBm ~ -...86 dBm 3 -95 dBm ~ -91 dBm 2 -100 dBm ~ -96 dBm 1 -105 dBm ~ -101 dBm 0 ~ -105 dBm Copyright © 2008 LG Electronics. Using Test mode on DSP Sleep function 6mA GSM850/Level7 (Battery 800mA):210 Min GSM850/Level12(Battery 800mA...
...labove. Only for training and service purposes - 13 - All right reserved. power) - Ringer set as ringer. 2. Inc. LGE Internal Use Only Backlight of phone set off . Test distance set as 50 cm Fast Charge : < 600 mA Slow Charge: < 60 mA Antenna Bar Number Power 4 -90 dBm ~ -...86 dBm 3 -95 dBm ~ -91 dBm 2 -100 dBm ~ -96 dBm 1 -105 dBm ~ -101 dBm 0 ~ -105 dBm Copyright © 2008 LG Electronics. Using Test mode on DSP Sleep function 6mA GSM850/Level7 (Battery 800mA):210 Min GSM850/Level12(Battery 800mA...
Service Manual
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...5. RTR6235 for Power Management 4. All right reserved. TECHNICAL BRIEF 3. Copyright © 2008 LG Electronics. Inc. ESM6270 EGSM / DCS1800/ PCS1900 1. Bluetooth RF Module SW pad pad H-BPF...IO s & controls Quadrature Downconverter LPF LPF & DC Corr ection F ref PLL # 2 VCO Phone VCTCXO PM6635-3P Input Power Management Voltage R egulat ors General H ous ek eeping User Interfaces IC...part A generic, high-level functional block diagram of KE990/KE990c is shown in Figure 3-1. TECHNICAL BRIEF 3.1 General Description The KE990/KE990c supports EGSM-900, DCS-1800, and PCS-...
...5. RTR6235 for Power Management 4. All right reserved. TECHNICAL BRIEF 3. Copyright © 2008 LG Electronics. Inc. ESM6270 EGSM / DCS1800/ PCS1900 1. Bluetooth RF Module SW pad pad H-BPF...IO s & controls Quadrature Downconverter LPF LPF & DC Corr ection F ref PLL # 2 VCO Phone VCTCXO PM6635-3P Input Power Management Voltage R egulat ors General H ous ek eeping User Interfaces IC...part A generic, high-level functional block diagram of KE990/KE990c is shown in Figure 3-1. TECHNICAL BRIEF 3.1 General Description The KE990/KE990c supports EGSM-900, DCS-1800, and PCS-...
Service Manual
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... A dedicated controller manages the TCXO warm-up - Copyright © 2008 LG Electronics. Inc. ESM device controls and statuses the PM6635 IC using low dropout...Bus Interface (SSBI) supplemented by PM6635(Qualcomm PMIC). battery, external charger, adapter, coin cell back-up and signal buffering, and key parameters (undervoltage lockout and crystal oscillator signal presence... monitored to power the appropriate handset electronics. Eight programmable output voltages are : PM6635 : Phone power supply AAT3169 : LCD Backlight/Flash charge pump 3.7.2 PM6635 The PM6635 device (Figure ...
... A dedicated controller manages the TCXO warm-up - Copyright © 2008 LG Electronics. Inc. ESM device controls and statuses the PM6635 IC using low dropout...Bus Interface (SSBI) supplemented by PM6635(Qualcomm PMIC). battery, external charger, adapter, coin cell back-up and signal buffering, and key parameters (undervoltage lockout and crystal oscillator signal presence... monitored to power the appropriate handset electronics. Eight programmable output voltages are : PM6635 : Phone power supply AAT3169 : LCD Backlight/Flash charge pump 3.7.2 PM6635 The PM6635 device (Figure ...
Service Manual
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...to/from ESM Data to/from ESM Out-Put Enable of the ESM6270 was designed to provide an efficient interconnect between the mobile phone and a personal computer (PC). to Host USB Data- The USB interface of Transceiver USB_Power From Host(PC) USB Data+ to...1.1. Only for training and service purposes Name USB_DAT USB_SE0 USB_OE_N USB_VBUS USB_D+ USB_D- All right reserved. 3. Copyright © 2008 LG Electronics. USB Signal Interface D6 D7 GPIO40 GPIO42 N26 USB_DAT_VP N23 USB_SE0_VM N25 USB_OE_TP_N H14 L14 MMC_CMD_GPIO30 MMC_DATA_SDCC_DAT0_GPIO32 M16 C528 4.7u USB_VBUS ...
...to/from ESM Data to/from ESM Out-Put Enable of the ESM6270 was designed to provide an efficient interconnect between the mobile phone and a personal computer (PC). to Host USB Data- The USB interface of Transceiver USB_Power From Host(PC) USB Data+ to...1.1. Only for training and service purposes Name USB_DAT USB_SE0 USB_OE_N USB_VBUS USB_D+ USB_D- All right reserved. 3. Copyright © 2008 LG Electronics. USB Signal Interface D6 D7 GPIO40 GPIO42 N26 USB_DAT_VP N23 USB_SE0_VM N25 USB_OE_TP_N H14 L14 MMC_CMD_GPIO30 MMC_DATA_SDCC_DAT0_GPIO32 M16 C528 4.7u USB_VBUS ...
Service Manual
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... MIC 7 CAM MIC 8 Ear MIC Maker Part No. Audio main component list LGE Internal Use Only - 60 - MODE Voice Call Speaker phone MIDI MP3 Device Receiver Mode Loud Mode Headset Loud Mode Loud Mode Headset Loud Mode Headset Description Receiver Voice Call Speaker... Phone Headset Voice Call Speaker Phone Speaker MIDI Bell Headset MIDI Bell Speaker MP3 Headset MP3 Table. All right reserved. Copyright © 2008 LG Electronics. TECHNICAL BRIEF 3.9.7.2. Audio Mode There are 8 main components in KE990. Only for MIC BIAS 8 ohm ...
... MIC 7 CAM MIC 8 Ear MIC Maker Part No. Audio main component list LGE Internal Use Only - 60 - MODE Voice Call Speaker phone MIDI MP3 Device Receiver Mode Loud Mode Headset Loud Mode Loud Mode Headset Loud Mode Headset Description Receiver Voice Call Speaker... Phone Headset Voice Call Speaker Phone Speaker MIDI Bell Headset MIDI Bell Speaker MP3 Headset MP3 Table. All right reserved. Copyright © 2008 LG Electronics. TECHNICAL BRIEF 3.9.7.2. Audio Mode There are 8 main components in KE990. Only for MIC BIAS 8 ohm ...
Service Manual
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..., ZR3453X is used as a cocoprocessor. Copyright © 2008 LG Electronics. Only for capturing voice and playing voice/music • Media Flash (SmartMedia, NANDFlash, MMC or SD) to TV [ Figure 3.10 ] LGE Internal Use Only - 66 - 3. TECHNICAL BRIEF Figure 3.10 presents a typical multimedia cellular phone system where ZR3453X is connected to the following...
..., ZR3453X is used as a cocoprocessor. Copyright © 2008 LG Electronics. Only for capturing voice and playing voice/music • Media Flash (SmartMedia, NANDFlash, MMC or SD) to TV [ Figure 3.10 ] LGE Internal Use Only - 66 - 3. TECHNICAL BRIEF Figure 3.10 presents a typical multimedia cellular phone system where ZR3453X is connected to the following...
Service Manual
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... - BAR Type - JPEG en/decoder - Only for training and service purposes 3. Video Recording: VGA 30 fps - MPEG4 encoder/decoder and play/save - Inc. Loud Speaker phone - 64 Poly Sound - Copyright © 2008 LG Electronics. H.263 decoder - TECHNICAL BRIEF 3.13 Main Features 3.13.1 Main features of KE990 - Audio: MP3, AAC, AAC+,AAC++, WMA, WAV -
... - BAR Type - JPEG en/decoder - Only for training and service purposes 3. Video Recording: VGA 30 fps - MPEG4 encoder/decoder and play/save - Inc. Loud Speaker phone - 64 Poly Sound - Copyright © 2008 LG Electronics. H.263 decoder - TECHNICAL BRIEF 3.13 Main Features 3.13.1 Main features of KE990 - Audio: MP3, AAC, AAC+,AAC++, WMA, WAV -
Service Manual
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Copyright © 2008 LG Electronics. YES Press PW R key Keypad L ED on sequence of power button Check Dome Sheet VREG_MSMC_1.2V, NO VREG_MSMP_2.7V, VREG_MSME_1.8V VREG_TCXO_2.85V, VREG_MSMA_2.6V Power up → PON_RESET_N assert to MSM → Phone booting & PS_HOLD(D500) assert High to low when key ...press? YES NO Change or charging the Batt ery NO Follow the LED trouble shoot NO Check open Pattern of KE990 is : PWR key press → PM_ON_SW_N go to low...
Copyright © 2008 LG Electronics. YES Press PW R key Keypad L ED on sequence of power button Check Dome Sheet VREG_MSMC_1.2V, NO VREG_MSMP_2.7V, VREG_MSME_1.8V VREG_TCXO_2.85V, VREG_MSMA_2.6V Power up → PON_RESET_N assert to MSM → Phone booting & PS_HOLD(D500) assert High to low when key ...press? YES NO Change or charging the Batt ery NO Follow the LED trouble shoot NO Check open Pattern of KE990 is : PWR key press → PM_ON_SW_N go to low...
Service Manual
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4. TROUBLE SHOOTING 4.11 Audio trouble 4.11.1 Receiver path Voice Receiver path as below: ESM6270 Ear1ON/Ear1OP → CN701(Touch FPCB connector) → Receiver Start Conne ct th e phone to n etw ork Equipm ent a nd setup c all Setup 1KHz tone out Hear the tone to the receiv er? All right reserved. Inc. YES END Copyright © 2008 LG Electronics. NO Change t he Receiv er YES END Check c onnector pin or ch ang e th e Tou ch FPCB Can you hea r th e ton e? Only for training and service purposes - 105 - LGE Internal Use Only
4. TROUBLE SHOOTING 4.11 Audio trouble 4.11.1 Receiver path Voice Receiver path as below: ESM6270 Ear1ON/Ear1OP → CN701(Touch FPCB connector) → Receiver Start Conne ct th e phone to n etw ork Equipm ent a nd setup c all Setup 1KHz tone out Hear the tone to the receiv er? All right reserved. Inc. YES END Copyright © 2008 LG Electronics. NO Change t he Receiv er YES END Check c onnector pin or ch ang e th e Tou ch FPCB Can you hea r th e ton e? Only for training and service purposes - 105 - LGE Internal Use Only
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... C578,C562 → R529,C522 → U504(Headset AMP) → FB502, FB503 → R525, R524 #4, #5 pin of CN500 headset Jack Start Connect the phone to network Equipment a nd setup c all Setup 1KHz tone out And inse rt head_ Set Headse t insertion detec tion NO in the Main LCD Display...11.2 Voice path for headset Voice path for training and service purposes - 107 - Check #8 pin o f CN500 or change the Main b'd Copyright © 2008 LG Electronics. All right reserved. 4. Inc. NO Change th e Main board YES The sine wave appear at NO Check t he CN500 or change the M ain b'd...
... C578,C562 → R529,C522 → U504(Headset AMP) → FB502, FB503 → R525, R524 #4, #5 pin of CN500 headset Jack Start Connect the phone to network Equipment a nd setup c all Setup 1KHz tone out And inse rt head_ Set Headse t insertion detec tion NO in the Main LCD Display...11.2 Voice path for headset Voice path for training and service purposes - 107 - Check #8 pin o f CN500 or change the Main b'd Copyright © 2008 LG Electronics. All right reserved. 4. Inc. NO Change th e Main board YES The sine wave appear at NO Check t he CN500 or change the M ain b'd...
Service Manual
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... appear at NO Check t he U502 or FB500, FB501? Chang e th e sp eaker YES END Copyright © 2008 LG Electronics. LGE Internal Use Only Inc. TROUBLE SHOOTING 4.11.3 Loud speaker path (voice speaker phone) Loud speaker path as below: ESM6270 SPK_R, SPK_L → C532,C541 → R510,R516 → C533,C542 →...,R517 → U502(audio codec) → FB500,FB501 → CN603(B°ØtoB connector) → OUT800, OUT801 (SPK PAD) → Speaker Start Conne ct th e phone to netw ork Equipm ent a nd setup call Setup 1KHz tone out Set phon e with sp eaker...
... appear at NO Check t he U502 or FB500, FB501? Chang e th e sp eaker YES END Copyright © 2008 LG Electronics. LGE Internal Use Only Inc. TROUBLE SHOOTING 4.11.3 Loud speaker path (voice speaker phone) Loud speaker path as below: ESM6270 SPK_R, SPK_L → C532,C541 → R510,R516 → C533,C542 →...,R517 → U502(audio codec) → FB500,FB501 → CN603(B°ØtoB connector) → OUT800, OUT801 (SPK PAD) → Speaker Start Conne ct th e phone to netw ork Equipm ent a nd setup call Setup 1KHz tone out Set phon e with sp eaker...
Service Manual
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Insert a phone in a TEMSELL (in case of BT(M800) No Check TP800/TP801/ P802 No Change the main bo ard TP802 BT Antenna BT_GND R800 BT_ANT Copyright © 2008 LG Electronics. Yes SBST/SBCK/ SBDT is asse rted? Yes END No Check P MIC (U501) Pin#64 Check Osc illator No (...the tester and select the link analyzer . 4. Yes XTAL_IN is selected to bluetooth test-mode. - TROUBLE SHOOTING TC-3000A (Bluetooth Tester) 1. Set phone to 'ON' 6. You can select wanted test cases after hopping mode is asse rted? Only for training and service purposes - 125 - All right reserved....
Insert a phone in a TEMSELL (in case of BT(M800) No Check TP800/TP801/ P802 No Change the main bo ard TP802 BT Antenna BT_GND R800 BT_ANT Copyright © 2008 LG Electronics. Yes SBST/SBCK/ SBDT is asse rted? Yes END No Check P MIC (U501) Pin#64 Check Osc illator No (...the tester and select the link analyzer . 4. Yes XTAL_IN is selected to bluetooth test-mode. - TROUBLE SHOOTING TC-3000A (Bluetooth Tester) 1. Set phone to 'ON' 6. You can select wanted test cases after hopping mode is asse rted? Only for training and service purposes - 125 - All right reserved....
Service Manual
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...always appears at the same time. 5.2 Downloading Procedure • Connect the phone to your desktop PC using the USB cable and run Select Port When ...monitor it all the time. ➢ Automatically run the LGMDP application. LGMDP supports Windows 2000/XP where the LG (Ver 4.6 or later) USB modem driver is a download tool with capabilities to upload image files to ...the handset. LGE Internal Use Only Copyright © 2008 LG Electronics. 5. Before getting started, set up to 9 handsets at the top of the window so that ...
...always appears at the same time. 5.2 Downloading Procedure • Connect the phone to your desktop PC using the USB cable and run Select Port When ...monitor it all the time. ➢ Automatically run the LGMDP application. LGMDP supports Windows 2000/XP where the LG (Ver 4.6 or later) USB modem driver is a download tool with capabilities to upload image files to ...the handset. LGE Internal Use Only Copyright © 2008 LG Electronics. 5. Before getting started, set up to 9 handsets at the top of the window so that ...
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... AMSS Modem file is selected, the phone may not work. (The file name shall be downloaded to the handset from that you can select images by clicking on the Browse..., then the LGMDP will be different from the path directory in the snapshot.) KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 Copyright © 2008 LG Electronics. In case of AMSS...
... AMSS Modem file is selected, the phone may not work. (The file name shall be downloaded to the handset from that you can select images by clicking on the Browse..., then the LGMDP will be different from the path directory in the snapshot.) KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 Copyright © 2008 LG Electronics. In case of AMSS...
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... KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 LGE Internal Use Only - 142 - Inc. DOWNLOAD 5.3 Troubleshooting Download Errors 5.3.1 When the phone does not work • Reboot the phone in case of emergency situation. (AMSS modem, Media, and Module images can not download media or module image. The phone supports a special mode called emergency mode. Copyright © 2008 LG Electronics. All right reserved...
... KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 KE990 LGE Internal Use Only - 142 - Inc. DOWNLOAD 5.3 Troubleshooting Download Errors 5.3.1 When the phone does not work • Reboot the phone in case of emergency situation. (AMSS modem, Media, and Module images can not download media or module image. The phone supports a special mode called emergency mode. Copyright © 2008 LG Electronics. All right reserved...
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LGE Internal Use Only 5. DOWNLOAD • Connect the handset and Press the Connect button in the Select Port window. (Enable state in the window indicates that the Phone has been detected and is ready to download.) KE990/KE990c KE990 Copyright © 2008 LG Electronics. All right reserved. Only for training and service purposes - 145 - Inc.
LGE Internal Use Only 5. DOWNLOAD • Connect the handset and Press the Connect button in the Select Port window. (Enable state in the window indicates that the Phone has been detected and is ready to download.) KE990/KE990c KE990 Copyright © 2008 LG Electronics. All right reserved. Only for training and service purposes - 145 - Inc.
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... Qu adrature Downconverter LPF & DC Correction Ctls Quad rature Downconverter LPF & DC Correction F ref P LL #2 VCO Dugital IO s & controls LPF VDDM LGE Internal Use Only Phone VCTCXO RTR627 5_ TCX O PM6650 Input P ower Ma nagemen t Vo ltag e Reg ulators G enera l Housekeepin g User Interfaces IC Interfaces MSM_TCXO ESM6270 [Figure 2.1] EGSM-900/DCS...
... Qu adrature Downconverter LPF & DC Correction Ctls Quad rature Downconverter LPF & DC Correction F ref P LL #2 VCO Dugital IO s & controls LPF VDDM LGE Internal Use Only Phone VCTCXO RTR627 5_ TCX O PM6650 Input P ower Ma nagemen t Vo ltag e Reg ulators G enera l Housekeepin g User Interfaces IC Interfaces MSM_TCXO ESM6270 [Figure 2.1] EGSM-900/DCS...