DOWNLOAD LG 37LU25 (CHASSIS:LA85D) Service Manual ↓ Size: 5.15 MB | Pages: 35 in PDF or view online for FREE

Model
37LU25 (CHASSIS:LA85D)
Pages
35
Size
5.15 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
37lu25-chassis-la85d.pdf
Date

LG 37LU25 (CHASSIS:LA85D) Service Manual ▷ View online

- 21 -
2. AUDIO Path
IC502
Comp1
(DVD/DTV)
Comp2
(DVD/DTV)
Comp1
AV1
AV2
S-AV1
AV_1
AV_2
MSTAR
RGB
(PC/DTV)
RGB
HDMI 1
HDMI 2
Comp2
SIF
(From Tuner)
   NTP3000
(Digital Amp)
IIS
MNT_R/L
    HDMI 1(TMDS)
TMDS
Switch
TMDS
Switch
IC802
    HDMI 2(TMDS)
    HDMI 3(TMDS)
    TMDS
HDMI 3
Audio
Switch
IC901
Comp
IF_P/N
IC400
LGDT
3304
LGDT
3304
(From Tuner)
IC501
IC100
TP
(MPEG Transport stream)
- 22 -
3. Power flow diagram
TU401
LGIT TUNER
Regulator
IC
16V_AUDIO
IC711
AS7809
+5V_TUNER
12V
Q706
SI3865BDV
+5V_GENERAL
+5V_ST
IC702
AZ1117H-
3.3V
+3.3V_MULTI
IC709
SC156515M
+3.3V_PVSB
IC708
SC4215IS
+1.2V_PVSB
IC800, IC801, IC902
EEPROM
IC803
TMDS351PA
G
IC901
COMP AUDIO
SWITCH
IC600
CAT24C02WI
IC102
AT24C512BW
IC501
NTP3000A
IC500
AZ1117H-
1.8V
+1.8V_NTP
1
2
17
5
6
19
20
9
4
8
12
16V
12V
5VST
AC_DET
VAVS_ON
M5V_ON
GND
5V_MNT
RL_ON
18
21
3
7
14
16
13
15
$0.3
$0.1
$1.36
$4.5
$0.05
$0.13
$
IC400
LGDT3304
+3.3V_DVDD
+3.3V_AVDD
+1.2V_DVDD
$2.55
$0.2
$0.05
9V
IC710
KIA78R05F
$0.3
IC802
HDMI Receiver
- 23 -
4. I2C Design
Mstar
TUNER
TDVF-H051F
Audio AMP
NTP3000A
Demodulator
LGDT3304
I/O exp.
M62320
- 24 -
EXPLODED VIEW
510
300
200
120
122
500
910
900
801
804
803
530
802
550
830
805
806
521
821
540
400
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These
parts are identified by       in the Schematic Diagram and EXPLODED VIEW. 
It is essential that these special safety parts should be replaced with the same components as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards. 
Do not modify the original design without permission of manufacturer.
IMPORTANT SAFETY NOTICE
A2
LV1
A10
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