LG 22LF10 (CHASSIS:LA85C) Service Manual ▷ View online
- 13 -
3-1. No Raster on AV signal (AV/ COMPONENT/ S-VIDEO RGB-PC)
3-2. NO Raster on RF signal (TV)
3-2. NO Raster on RF signal (TV)
Start Check 3-1
Start Check 3-2
Check input source cable and jack.
Repeat No power(1)
process.
Fail
Check output
of TU400.
Pass
Pass
Fail
Check 5V of TU400.
Re-Soldering or change
the defect part.
Re-Soldering or change
the defect part.
Check
the signal of R622,
R623, R681, R615, R616,
R617, R640,R641,
R642.
Fail
Change signal of
R622, R623, R681,
R615, R616, R617,
R640,R641,R642.
R622, R623, R681,
R615, R616, R617,
R640,R641,R642.
Pass
Check input/output
of IC100.
Pass
Fail
Re-soldering or change defect part.
Check X100.
Check X100.
Pass
Pass
- 14 -
4. No sound
Check the input
Source.
Fail
Pass
Change source input.
Check input/Output
of IC100.
Fail
Pass
Re-soldering or change the defect part.
Check the X100.
Check the X100.
Check the input/
output of IC500.
Fail
Re-soldering or change
the defect part.
the defect part.
Pass
Check the Speaker.
Pass
Check the Speaker wire.
Start Check
Fail
Change the speaker.
- 15 -
Rear AV_1
V, LR
Rear S_1
YC
IN1
IN1
Video/Audio SW
Comp_1
YPbPr/LR
CABLE
AIR
ATSC/NTSC Tuner
(TDVF-H051F)
LG Innotek
LGE1854C
MSTAR
EAN37156404
VSB/QAM
Receiver
(LGDT3304)
0ICTMLG019C
D-AMP
(YDA148-EZ)
EAN40130001
HY5DU561622F
256M (DDR)
HY5DU561622F
256M (DDR)
CLK_
25MHz
6212AB2872A
IF-P
IF-N
LVDS(8Bit)
X100
12MHz
CVBS(ATV)
TP DATA[0-7]
Audio_L
Audio_R
SIF
2
Comp1
Air : 8VSB
Cable : 256/64QAM
¥RGB/YPbYr*2
¥CVBS*3
¥YC*2
¥L/R-IN*3
¥SIF
¥CVBS OUT*1
¥HDMI*1
R OUT
L OUT
Head Phone
PC Audio IN
PC(VGA)
RS232C(SVC only)
PC IN
L
C
D
USB(SVC only)
1.0Vp-p
96dBuV
5V
CVBS0[44]
Buffer
SIFM0
SIFP0
SIFM0[50]
SIFP0[51]
Buffer
1.2V
3.3V
IFP[3]
IFN[4]
[3]
[16]
[15]
[N:11]
[P:10]
IN[55]
OUT[54]
2
[20,22,24,26,
27,28,29,31]
TS0-7[86,87,88,89,90,91,92,93]
SCL[38]
SDA[36]
IF_AGC
IFAGC[22]
MSCL
MSDA
SCLM1[127]
SDAM1[126]
TPCLK[33]
TPSOP[34]
TPVALID[19]
TPERR[17]
TSCLK[96]
TSSYNC[95]
TSVALID[94]
IN[255]
OUT[254]
2
3.3V
1.25V
OUT_P_R[8]
OUT_N_R[14]
OUT_P_L[35]
OUT_N_L[29]
IN_L[38]
IN_R[5]
HP_DET[37]
MUTE[6]
12V
AUOUTR0[73]
AUOUTL0[72]
GPIO12[79]
1CH LVDS[137-146]
2CH LVDS[137-146,
150-159]
RXE
/RXO
BIN[21]SOGIN[22]GIN[23]RIN[24]
VS_RGB[17]
HS_RGB[16]
RGB_SW[80]
SCL/RX[117]
SDA/TX[116]
AUR_IN[59]
AUL_IN[58]
PB_IN[26]
SOY[29]
Y_IN[28]
PR_IN[31]
AUL_IN1[56]
AUR_IN1[57]
COMP_SW[112]
CVBS1[42]
AUL_IN0[54]
AUR_IN[55]
AV1_SW[111]
SV_C0[38]
SV_Y0[39]
S_SW[82]
6630G70016A
6630G00001A
6612F00001D
6612F00099A
EAG31022001
EAG35541101
EAG35541101
6612J10031C
Tx
/Rx
MAX3232CDR
EAN41348201
ST-5V
Tx_Out
Rx_In
R232C_Tx
R232C_Rx
EEPROM
EAN35989901
DDC_SDA/UART_TX
DDC_SCL/UART_RX
IR_RX[114]
SAR0[118]
SAR1[119]
SAR2[120]
SAR3[121]
EEPROM(512K)
24C512
EEPROM(512K)
24C512
0IMMRAL025A
SCL_EEPROM[136]
SDA_EEPROM[135]
3.3V
Flash (64M)
S25FL064A
Flash (64M)
S25FL064A
SPI_CK[129]
SPI_DI[130]
SPI_DO[131]
SPI_CZ[132]
3.3V
KEY_CTL[1,2]
Power/LIPS
Power
15V/ST-5V
[12]
SCL_TU[11]
SDA_TU[13]
SDA[7]
SCL[8]
VCOM0[45]
TUNER_CVBS
VCOM0
6612B00015C
HDMI
USB_DM[251]
USB_DP[252]
USB_OCD_N[83]
B_TX0-[4]
B_TX0+[5]
G_TX1-[7]
G_TX1[8]
R_TX2-[10]
R_TX2+[11]
TXCLK-[2]
TXCLK+[3]
HPDCTRL[12]
DDCDA_SDA[14]
DDCDA_SCL[15]
POWER_HDMI[110]
3.3V
AVDD_DVI
2.5V
VDD_DDR
G-5V
19
/22
ST-5V
OP-AMP
TPA6110A20
HP_L/r[70,71]
EAN42961201
6612B00015C
EEPROM
EAN35989901
5V
BLOCK DIAGRAM
1. Main
- 16 -
IC500
Sound Amp (YDA148)
From LIPs
IC100
LGE1854C
AVDD_ADC, AVDD_SIF
AVDD_AU ,
AVDD_MemPLL
AVDD_MPLL, AVDD_LPLL
AVDD_DVI, AVDD_XTAL
AVDD_DVI
VDDC
IC400
LGDT3304
VDD
AVDD
VDD33
AVDD33
1
2
3
4
5
6
7
8
9
10
11
15V
15V
GND
ST5V
NC
INV_CTL
DIM
INV_BR
GND
ST5V
GND
IC702
MP2305DS
12V
IC700
KIA7809F
(19
,22
W)
IC103 / IC105
Flash Memory
IC200 / IC201
SDRAM *2
HY57V641620ETP
IR receiver
Pannel
19
, 22
Q704
FET
(SI49258
)
TU400
TUNER (TDVF-H051F)
9V
IC701
KIA7805F
5V
IC706
AZ1117H-3.3
IC709
AZ1085S-ADJ
IC703
AZ1085S-3.3
IC710
AZ1085S-ADJ
ST2.6V
ST3.3V
ST1.25V
ST3.3V
VDD_DDR
VDDP
AVDD_OTG
IC501
HP Amp (TPA6110A)
IC705
AZ1085S-ADJ
ST3.3V
IC102
AT24C512W
IC104
MC74LCX140I
IC601
MAX3232CDR
IC704
AZ1085S-3.3
IC708
SC4215ISTRT
IC800
CAT24C02WI
IC600
CAT24C02WI
ST5V
ST15V
5V
3.3V
3.3V
1.2V
2. POWER
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