LG KU250 Support Question
LG KU250 Support Question
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Question posted by lkissling on December 9th, 2012
What Does The Mean On Or Off Key On My Lg440g Tracfone?
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Related LG KU250 Manual Pages
Service Manual - Page 2
...Purpose 5 1.2 Regulatory Information 5
2. DOWNLOAD 119
5.1 U250/KU250 DOWNLOAD 119 5.1.1 Introduction 119 5.1.2 Downloading Procedure 119 5.1.3 ...Troubleshooting ....105 4.15 Main LCD Troubleshooting 106
4.16 Receiver Path 107 4.17 Headset path 109 4.18 Speaker phone path 111 4.19 Main microphone 113 4.20 Headset microphone 115 4.21 Vibrator 117
5. Table Of Contents
1. ...
Service Manual - Page 17
...management, general housekeeping, and user interface support functions into a single mixed signal IC. Key parameters such as temperature, RF output power, and battery ID. The antenna connects ...radioOne ZIF technique. TECHNICAL BRIEF
A generic, high-level functional block diagram of U250/KU250 is applied to the ramping control pin of up -converter translates the GMSK-modulated signal...
Service Manual - Page 30
... losses between the PA and LNA. TECHNICAL BRIEF
3.5.6 UMTS Duplexer(FL104:ACMD-7602)
A UMTS duplexer splits a single operating band into the receiver. In the U250/KU250 typical
losses : UMTS2100_ Tx = 1.2 dB, UMTS2100_ Rx = 1.4 dB • Out-of frequency ranges. the duplexer provides input selectivity for the receiver, output
filtering for both...
Service Manual - Page 44
... are : 3.9.2. Eight programmable output voltages are monitored to power the appropriate handset electronics. battery, external charger, adapter, coin cell back-up and signal buffering, and key parameters (under-voltage lockout and crystal oscillator signal presence) are generated using Single Serial Bus Interface (SSBI) supplemented by PM6650(Qualcomm PMIC). and generates all...
Service Manual - Page 54
... USB_SE0 USB_OE_N MMC_CMD
MMC_DATA MMC_CLK
Figure 1.17 Schematic of Transceiver USB_Power From Host(PC) USB Data+ to provide an efficient interconnect between the mobile phone and a personal computer (PC). USB Signal Interface
F4 UART2_RFR_N_GPIO91 G6 UART2_CTS_N_GPIO90 E4 UART2_DP_TX_DATA_GPIO88 L23
UART3_CTS_N_GPIO86 M21
UART3_DP_RX_DATA_GPIO85 M19
UART3_DP_TX_DATA_GPIO84 D6 GPIO40 D7...
Service Manual - Page 56
... Pad
There are 23 main key buttons in Figure. Key Matrix Mapping Table
VREG_MSMP_2.7V
2
4
6
8
KEY MAP
100K
RA400
100K
R423
7
5
3
1
KEY_ROW(0)
KEY_ROW(1)
KEY_ROW(2)
KEY_ROW(3)...
END
END
Figure 1.20 END Keypad Circuit - 57 - 3. Shows the Keypad circuit. 'END' Key is connected to PMIC(PM6650).
ROW(0) ROW(1) ROW(2) ROW(3) ROW(4)
COL0
1 4 7 *
COL1
2 5 8 0
COL2 3...
Service Manual - Page 60
... R415
LEBB-S14H 100ohm R418
100ohm
LD402 LEBB-S14H
LD405 LEBB-S14H R413 100ohm
LD408
LEBB-S14H R416 100ohm R419 100ohm
Figure 1.22 Schematic of KEY back light circuit (KEY side)
- 61 - TECHNICAL BRIEF
3.11.6 Keypad Light
There are 8 Blue LEDs in Main...
Service Manual - Page 61
3. Display & LCD FPC Interface
LCD module is connected to LCD KEY FPCB with 176(RGB)X220 resolution. TECHNICAL BRIEF
3.11.7.
LCD Module (NM176CN1 : Tovis)
- This LCD Module has a 1.76 inch diagonally measured active display area with ...
Service Manual - Page 66
... list
- 67 - Audio Mode There are 6 main components in U250/KU250.
3.
Maker Part No.
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....
Service Manual - Page 67
... (900/1800/1900) - Stereo Headset - MP3/AAC decoder and play /save - TECHNICAL BRIEF
3.12 Main Features
1. Dual Camera (1.3Mega + VGA(0.3M)) - 1810 speaker/receiver - Speaker phone (in GSM and WCDMA) - 3. Color LCD (Main:262K TFT, 1.76") - MPEG4 encoder/decoder and play - Supports Bluetooth, USB - 950 mAh (Li-Ion)
- 68 - Bar Type...
Service Manual - Page 93
...
Power On sequence of U250/KU250 is : PWR key press → PM_ON_SW_N go to PMIC
Start
Battery voltage.
4. NO Change or charging the Battery
NO Check the Key Dome
YES
VREG_MSMC_1.2V,VREG_MSMP_2.7V, VREG_MSME_1.8V, VREG_TCXO_2.85V, VREG_MSMA_2.6V power up and system reset assert to MSM6245 → Phone booting and PS_HOLD assert...
Service Manual - Page 104
...-S14H
LD405 LEBB-S14H R413 100ohm
LD408
LEBB-S14H R416 100ohm R419 100ohm
Figure.Keypad backlight LED part
- 105 - 4. TROUBLE SHOOTING
4.14 Keypad Backlight Troubleshooting
Key Pad Back Light is on as below : Key pressing → KYBD_BACKLIGHT go to 0V → MAIN...
Service Manual - Page 105
...
- 106 - 4. Yes Disconnect and reconnect The LCD connector
GO to power on ? The signal path is : MSM6245 → CN400 → LCD Module
Start
Press END key
NO Key LED is on trouble shooting
Yes LCD display OK?
No Change the LCD module
END
Yes LCD display OK?
Service Manual - Page 118
...handsets at the top of the file menu the way you want. DOWNLOAD
5.1 U250/KU250 DOWNLOAD
5.1.1 Introduction
LGMDP is a download tool with capabilities to upload image files to...Check if LGMDP always appears at the same time.
5.1.2 Downloading Procedure
• Connect the phone to the handset. DOWNLOAD
5. Additionally, LGMDP allows multi downloading up LGMDP preferences from PC to...
Service Manual - Page 122
.../KU250 U250/KU250 U250/KU250 U250/KU250 U250/KU250 U250/KU250 U250/KU250 U250/KU250 U250/KU250
U250/KU250 U250/KU250
- 123 - Make sure that of the file name in the PC. In case of AMSS Modem Image file by clicking on the Browse... For instance, select the path of wrong AMSS Modem file is file is selected, the phone may not...
Service Manual - Page 128
... images again in the emergency mode (Simultaneously press 2, 5, and PWR red keys) and then try to download all the images up to AMSS. In this mode.)
- 129 - The phone supports a special mode called emergency mode. 5. DOWNLOAD
5.1.3 Troubleshooting Download Errors
1) When the phone does not work after downloading has been completed. 2) Media Erasing Error...
Service Manual - Page 129
U250/KU250
• Choose Image file after clicking on the Start button to the handset from the...After choosing valid images, then click on the Browse...
U250/KU250 U250/KU250 U250/KU250 U250/KU250 U250/KU250 U250/KU250 U250/KU250 U250/KU250 U250/KU250
- 130 - DOWNLOAD
• The below dialog shows parameters of Select Port when phone is booted in the PC. The selected image will boot ...
Service Manual - Page 130
U250/KU250
• 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 adopt.
Next slide shows the remedial procedure to download.)
U250/KU250
U250/KU250
- 131 - DOWNLOAD
5.1.3.2 NV Restore Error
• Snapshot showing the NV Restore error. 5.
Service Manual - Page 145
...
408
SND
SEARCH
7
8
9
HOT400
409
HOT401
DN
HOT4
0
HOT3
BACK
END END
F
C
D
KEYS
Section Designer
Date MAR.07.2007
Checked Approved
Sign & Name
Jaykay
LG Electronics Inc.
LGMC
REV_1.2
LG... Electronics Inc.
- 146 - MODEL
U2K50U/2K5U0250
E
Sheet/ Sheets
4/4
DRAWING NAME
KEY / MMI LCD/CAMERA
DRAWING NO. RCV- CIRCUIT DIAGRAM
1
2
3
4
5
6
7
CN400
...
Service Manual - Page 158
...
AAAY00 ADDITION
3
MCJA00 COVER,BATTERY
2
APAY00 PACKAGE
3
BSEA00 SUPPLEMENTARY PART
2
APEY00 PHONE
3
ACGK00 COVER ASSY,FRONT
4
MCCC00 CAP,EARPHONE JACK
4
MCCG00 CAP,MULTIMEDIA CARD
4...WINDOW
4
MWAC00 WINDOW,LCD
3
ACGM00 COVER ASSY,REAR
4
ENZY00 CONNECTOR,ETC
4
MCCF00 CAP,MOBILE SWITCH
4
MCJN00 COVER,REAR
4
MHGZ00 HOLDER
4
MLAB00 LABEL,A/S
4
MLAN00 LABEL,QUALCOMM
4
...
LG Knowledge Base Results
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Bluetooth Profiles - LG Consumer Knowledge Base
... Devices LG Rumor 2 Mobile Phones: Lock Codes Transfer Music & Pictures LG Voyager Advanced Audio Distribution (A2DP) This profile provides the means for an enabled...or PDA. microSD tm Memory Port Pairing Bluetooth Devices LG Dare Transfer Music & / Mobile Phones Bluetooth Profiles B luetooth profiles - Allows a compatible Bluetooth device to a Bluetooth enabled printer from... -
What are DTMF tones? - LG Consumer Knowledge Base
... is represented by a pair of tones. a low-frequency tone and a high-frequency tone - The land-line phone system can then "listen" and decode that key. Some numbers will have the same higher frequency but a different lower frequency. Mobile phone networks use and not for any specific model) o MENU o SETTINGS o DTMF Tones o Normal or Long... -
Mobile Phones: Lock Codes - LG Consumer Knowledge Base
... this code is backed up to reset it does not have a pre-determined security code. GSM Mobile Phones: The Security Code is an 8 digit code that can be accessed; However, if this option.... a back-up . either from the Service Provider. Keep holding them pressed: Volume Down, Camera Key and Power/End Key. stands for a PUK code (read further below). SIM/SMART CHIP/PUK BLOCKED A new SIM...
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