LG 42PG20-UA (CHASSIS:PU84A) Service Manual ▷ View online
- 41 -
BLOCK DIAGRAM
- 42 -
BLOCK DIAGRAM
Power flow diagram
IC100
LGE1854C
+3.3V_VDDP
+3.3V_AVDD_MPLL
+3.3V_AVDD_OTG
+3.3V_AVDD_ADC
+3.3V_AVDD_DVI
+3.3V_AVDD_SIF
+3.3V_AVDD_AU
+3.3V_AVDD_MEMPLL
+3.3V_AVDD_LPLL
TU400
LGIT TUNER
IC105
Flash Memory
S25Fl064A
IC200, 201
DDRAM
HY5DU561622FTP*2ea
IR
IC102
NVRAM
AT24C512W
Regulator
IC
16V_AUDIO
IC703
MP2305DS
+5V_TUNER
12V
Q706
SI3865BDV
+5V_GENERAL
+5V_ST
IC708
AZ1117H-
3.3V
+3.3V_MULTI
IC706
AZ1085S
+2.6V_MVDD
+2.6V_VDD_DDR
IC705
AZ1085S
+3.3V_VDDP_ST
IC709
AZ1085S-Adj
+1.25V
IC702
SC156515M
+3.3V_PVSB
IC701
SC4215IS
+1.2V_PVSB
IC715
M62320FP
IC805
AZ1117-3.3V
IC803
TMDS351PA
G
+3.3V_MST
IC801,2,4
AT24C02*3ea
IC601
STMAV340
IC602
74HC4066
IC603
MAX3232
IC604
AT24C02
IC502
NTP3000A
IC501
AZ1117H-
1.8V
+1.8V_NTP
+1.25V_AVDD_DVI
+1.25V_VDDC
IC104
Reset triger
74LVC14APW
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
+2.6V_VDD_DDR
+1.25V_VDDC
+1.25V_AVDD_DVI
$0.3
$0.1
$0.3
$0.07
$0.26
$0.08
$0.13
$0.13
$1.36
$4.5
$0.05
$0.13
$0.35
$0.05
$0.07
$1.31
$0.13
$0.06
$0.82
$7.9
$
IC400
LGDT3304
+3.3V_DVDD
+3.3V_AVDD
+1.2V_DVDD
$2.55
$0.2
$0.05
$0.74
USB
- 43 -
NOTES
- 44 -
EXPLODED VIEW
A2
300
305
302
200
202
560
571
120
561
570
301
260
590
501
270
603
520
203
240
205
204
206
250
602
601
580
900
400
201
303
304
306
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