User manual LG 24EA53VQ-P
DON'T FORGET : ALWAYS READ THE USER GUIDE BEFORE BUYING !!!
If this document matches the user guide, instructions manual or user manual, feature sets, schematics you are looking for, download it now. Diplodocs provides you a fast and easy access to the user manual LG 24EA53VQ-P. We hope that this LG 24EA53VQ-P user guide will be useful to you.
Manual abstract: user guide LG 24EA53VQ-P
Detailed instructions for use are in the User's Guide.
[. . . ] 7 4. 4 LCD display trouble. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 4. 5 Camera Trouble. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 4. 6 Receiver & Speaker trouble. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 4. 7 Microphone trouble. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 4. 8 Vibrator trouble. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 4. 9 SIM & uSD trouble. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 4. 10 Touch trouble. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 4. 11 LCD LED trouble. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 4. 12 Trouble shooting of Receiver part. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94 4. 13 Trouble shooting of Transmitter part. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 4. 14 Trouble shooting of WI-FI/BT/FM part. . . . . . . . . . . . . . . . . . . . . . . . . . . . . PERFORMANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2. 1 H/W Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2. 2 Technical Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3. [. . . ] The digital transmitter architecture is based on a polar modulation architecture, where the analog modulation data (rectangular I/Q coordinates) is converted to digital data stream and is subsequently transformed to polar coordinates by means of a CORDIC algorithm. The resulting amplitude information is fed into a digital multiplier for power ramping and level control. The ready processed amplitude signal is applied to a DAC followed by a low pass filter which reconstructs the analog amplitude information. The phase signal from the CORDIC is applied to the Sigma-Delta fractional-N modulation loop. The divided output of its associated VCO is fed to a highly linear amplitude modulator, recombining amplitude and phase information. The output of the amplitude modulator is connected to a single ended output RF PGA for digitally setting the wanted transmit power. The PA interface of SMARTi-PM supports direct control of standard dual mode power amplifiers (PA’s) which usually have a power control input VAPC and an optional bias
Figure 3-33 Transmitter part block diagram control pin VBIAS for efficiency enhancement. In GMSK mode, the PA is in saturated high efficiency mode and is controlled via its VAPC pin directly by the baseband ramping DAC. In 8PSK mode, the ramping functionality is assured by an on-chip ramping generator, whereas output power is controlled by the PGA’s as described above.
Copyright © 2010 LG Electronics. Only for training and service purposes
- 69 -
LGE Internal Use Only
LG Electronics
69/143
LGE Property
3. TECHNICAL BRIEF
24EA53VQ-P Operational Description Revision A
3. 19 RF synthesizer
The transceiver contains a fractional-N sigma-delta synthesizer for the frequency synthesis in the RX operation mode. VRAMP controls the output power for GMSK modulation and provides bias optimization for EDGE modulation depending on the state of MODE control. The integrated multi-function(MFC) provides envelope amplitude control in GMSK mode, reducing sensitivity to input drive, temp, power supply, and process variation. In EDGE mode, the MFC configures the PA for fixed gain, and provides the ability to optimize the PA bias operation at different power levels, This circuitry regulates PA bias conditions, reducing sensitivity to temp. , power supply, and process variation. The Enable input signal(pin8) provides a standby state to minimize battery drain. .
. Table 3-16 PAM pin description
LGE Internal Use Only
- 72 -
LG Electronics
72/143
Copyright © 2010 LG Electronics. TECHNICAL BRIEF
24EA53VQ-P Operational Description Revision A
3. 23 PAM Schematic
VBAT
L404 4. 7p
12 10 13 9 14 11 8 DCS_PCS_OUT GSM850_900_OUT BY_CAP1 BY_CAP2 GND1 GND2 GND3 PGND TX_EN GSM850_900_IN DCS_PCS_IN MODE_SELECT BS 1 2 3 4 5 6 7
R407 100P HBAND_PAM_IN PA_MODE S1_PA_BAND
C428 0. 5p L406 3. 9p
C433 8. 2n
TQM7M5005H
U402
VBATT VRAMP
R403 10K R404
PA_LEVEL TXON_PA LBAND_PAM_IN
C410 12n
C417 22n
C425 0. 01U
C422 0. 01U
15
OK
100P
C414 1u
C437
33u
C434 27P
C441 100P
C415 100P
C420 47P
C429 100P
OK
Figure 3-36 PAM schematic
Copyright © 2010 LG Electronics. Only for training and service purposes
- 73 -
LGE Internal Use Only
LG Electronics
73/143
LGE Property
4. TROUBLE SHOOTING
24EA53VQ-P Operational Description
Revision A
IV. TROUBLE SHOOTING
4. 1 Trouble shooting test setup
Equipment setup Power on all of test equipment -Connect PIF-UNION JIG or dummy battery to the DUT for power up. -Connect mobile switch cable between Communication test set and DUT when you need to make a phone call. -Follow trouble shooting procedure
LG Electronics
LGE Internal Use Only
74/143
- 74 -
LGE Property
Copyright © 2010 LG Electronics. TROUBLE SHOOTING
24EA53VQ-P Operational Description Revision A
4. 2 Power on Trouble
Check Points -Battery Voltage( Need to over 3. 35V) -Power-On Key detection (PWRON signal) -Outputs of LDOs from PMIC TP1 Remote Power On
2V11_RTC RPWRON_EN R203 2K R211 DNI
KEY_COL2 VA204
2 1 3
PWRON
RPWRON R204 DNI
5 6 4
Q201
TP1
KEY_ROW4
END_KEY
R209 10K R213 100K
Figure 4-1. [. . . ] EMI_ESD Filter (100 Ohm, 7. 5pF) SMD , 3 TERMINAL EMI FILTER SMD , 3 TERMINAL EMI FILTER , , dB, dB, dB, dB, 4532 , IFX EDGE Quad Pin SMD , Pb-free_4ch_5p-100ohm-5p , ; , Filter, LCR SMD , Pb-free_4ch_5p-100ohm-5p , ; , Filter, LCR SMD , 1608 , EMI-ESD Filter, 4ch, 14V, 15pF, 100ohm
7
CN805
ENBY0053601
7
D201
EDSY0011901
7
D202
DIODE, SWITCHING
EDSY0011901
7
D501
DIODE, SWITCHING
EDSY0011901
7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7
D502 FB201 FB202 FB302 FB303 FB304 FB601 FB602 FB701 FL1 FL101 FL102 FL201 FL301 FL401 FL801 FL802 FL803
DIODE, SWITCHING FILTER, BEAD, CHIP FILTER, BEAD, CHIP FILTER, BEAD, CHIP FILTER, BEAD, CHIP FILTER, BEAD, CHIP FILTER, BEAD, CHIP FILTER, BEAD, CHIP FILTER, BEAD, CHIP FILTER, SEPERATOR FILTER, EMI/POWER FILTER, EMI/POWER FILTER, EMI/POWER FILTER, EMI/POWER FILTER, SEPERATOR FILTER, EMI/POWER FILTER, EMI/POWER FILTER, EMI/POWER
EDSY0011901 SFBH0009201 SFBH0009201 SFBH0000912 SFBH0000912 SFBH0000912 SFBH0008101 SFBH0007102 SFBH0002302 SFAY0012001 SFEY0013701 SFEY0013701 SFEY0006501 SFEY0006501 SFAY0012001 SFEY0015501 SFEY0015501 SFEY0013201
LGE Internal Use Only
- 180 -
Copyright © 2010 LG Electronics. EXPLODED VIEW & REPLACEMENT PART LIST
Level 7 7 7 7 7 7
Location No. FL804 FL805 L101 L102 L103 L104
Description FILTER, EMI/POWER FILTER, EMI/POWER INDUCTOR, CHIP INDUCTOR, CHIP INDUCTOR, CHIP INDUCTOR, CHIP
Part Number SFEY0013201 SFEY0013201 ELCH0001430 ELCH0001430 ELCH0001430 ELCH0001430
Spec SMD , 1608 , EMI-ESD Filter, 4ch, 14V, 15pF, 100ohm SMD , 1608 , EMI-ESD Filter, 4ch, 14V, 15pF, 100ohm 100 nH, J , 1005 , R/TP , PBFREE 100 nH, J , 1005 , R/TP , PBFREE 100 nH, J , 1005 , R/TP , PBFREE 100 nH, J , 1005 , R/TP , PBFREE 10 uH, M , 3. 8*3. 8*1. 3 , R/TP , power inductor 750mA , ; , 10uH , 20% , . , 750mA , 0. 28 , ; , ; , SHIELD , 3. 8X3. 8X1. 3MM , [empty] , [empty] , Inductor, Wire Wound, Chip 10 uH, M , 3. 2*2. 6*1. 0 , R/TP , 100 nH, J , 1005 , R/TP , chip coil 100 nH, J , 1005 , R/TP , chip coil 100 nH, J , 1005 , R/TP , 100 nH, J , 1005 , R/TP , 100 nH, J , 1005 , R/TP , chip coil 15 nH, G , 1005 , R/TP , chip coil 4. 7 nH, J , 1005 , R/TP , chip coil 20 pF, 50V , J , NP0 , TC , 1005 , R/TP 4. 7 pF, 50V , C , NP0 , TC , 1005 , R/TP 15 nH, J , 1005 , R/TP , Pb Free 3. 9 pF, 50V , C , NP0 , TC , 1005 , R/TP 100 nH, J , 1005 , R/TP , PBFREE 5. 1 nH, S , 1005 , R/TP , 5. 1nH, 1005 100 nH, J , 1005 , R/TP , PBFREE 10 uH, M , 3. 2*2. 6*1. 0 , R/TP , 100 nH, J , 1005 , R/TP , PBFREE 10 uH, M , 3. 2*2. 6*1. 0 , R/TP , 100 nH, J , 1005 , R/TP , PBFREE 1. 5 nH, S, 1005, R/TP 4. 7 nH, J , 1005 , R/TP , chip coil 1 nH, S , 1005 , R/TP , MLCI 4. 3 nH, J , 1005 , R/TP , COIL
Color
Remark
7
L201
INDUCTOR, SMD, POWER
ELCP0006811
7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7
L202 L203 L204 L301 L305 L306 L401 L402 L403 L404 L405 L406 L407 L408 L502 L504 L507 L509 L601 L602 L603 L604 L605
INDUCTOR, SMD, POWER INDUCTOR, CHIP INDUCTOR, CHIP INDUCTOR, CHIP INDUCTOR, CHIP INDUCTOR, CHIP INDUCTOR, CHIP INDUCTOR, CHIP CAP, CHIP, MAKER CAP, CHIP, MAKER INDUCTOR, CHIP CAP, CERAMIC, CHIP INDUCTOR, CHIP INDUCTOR, CHIP INDUCTOR, CHIP INDUCTOR, SMD, POWER INDUCTOR, CHIP INDUCTOR, SMD, POWER INDUCTOR, CHIP INDUCTOR, CHIP INDUCTOR, CHIP INDUCTOR, CHIP INDUCTOR, CHIP
ELCP0006703 ELCH0001444 ELCH0001444 ELCH0005009 ELCH0005009 ELCH0001444 ELCH0012510 ELCH0009113 ECZH0000824 ECZH0000839 ELCH0001401 ECCH0000195 ELCH0001430 ELCH0003814 ELCH0001430 ELCP0006703 ELCH0001430 ELCP0006703 ELCH0001430 ELCH0001404 ELCH0009113 ELCH0003831 ELCH0009120
Copyright © 2010 LG Electronics. [. . . ]
DISCLAIMER TO DOWNLOAD THE USER GUIDE LG 24EA53VQ-P
Click on "Download the user Manual" at the end of this Contract if you accept its terms, the downloading of the manual LG 24EA53VQ-P will begin.