LG 42PQ1100-ZE (CHASSIS:PD92A) Service Manual ▷ View online
BLOCK DIAGRAM
- 13 -
LVDS
LV
A_
[0:4
]
S
C
2_
L/R
_IN
SATURN 4
(IC100)
T
AS5709
IC1000
SP
(R)
SP
(L)
P1000
CI Slot
(P800)
EEP
RO
M
I2
C
_
A
_
T
U
KE
Y1
/2
DDR Memor
y
512Mb (IC3
01)
SC1_R/
G
/B
DS
UB_
R
/G
/B
P
C
_L/R_IN
COMP_Y
/Pb/Pr
COMP_L/R
_
IN
DS
UB_
H
/V
_
S
Y
N
C
M
A
X3232
(I
C
702
)
DDCU
A
R
T-T
x
/R
x
US
B_D
M
/D
P
PCM_ADD
PCM_DATA
TS_Parallel
KIC7SZ32FU
(I
C
802
)
PCM_CD_ON
CI
_C
D_1/
2
I2S
MUTE, AMP_RST
P402
LED_G/R &
IR
Flash Memor
y
16MB (IC103)
SC1
_CVBS
_
IN
SC2
_CVBS
_
IN
SC1_TV_VO
U
T
DT
V/MNT_
V_OUT
S
C
1_
L/R
_IN
TV_
L/
R
_OUT
DT
V/
MNT_L/
R
_
OU
T
PDP
Panel
TS_Serial
RS
232C_
Tx/R
x
R
S
232
C_
Tx/
R
x
I2
C
_
D_
T
U
SP
DI
F_
O
U
T
DDR Memor
y
512Mb (IC3
00)
SP
I_
S
C
K
SP
I_
S
D
I
SP
I_
S
D
0
SP
I_
CSN_
1
EE
PRO
M
(I
C
111
)
SY
ST
EM_S
CL
SY
ST
EM_S
D
A
MDAT
A[0:16]
MDAT
A[17:3
1]
P1100
17
V 12V 5V
S
IDE_
Y
,
C
_
IN
SID
E
_C
V
B
S_IN
SID
E
_L,R_IN
SCL/
SD
A
_
S
UB/
A
M
P
SCL/SDA_SUB/AMP
HDCP E
EPR
OM
(I
C
102
)
SY
ST
EM_S
CL
SY
ST
EM_S
D
A
EEP
RO
M
HDMI_CEC
TDMS
HPD
5V_HDMI_1, 2, 3
EEP
RO
M
EEP
RO
M
DDC_
SCL,
SD
A
_
1
,2,
3
HDMI_I2C
X
C
5000
(I
C
500
)
C
E
365
(I
C
501
)
TV_
C
VBS+,
SI
F+
DT
V_I
F_N,P
TS_
D
A
T
A
- 14 -
POWER FLOW DIAGRAM
AU
T
O
_
GND
22
M5V-
ON
21
KEY-
ON
24
5
VST
23
SMW20
0
-2
4C
Waf
er
Vs
-
ON
AC
DET
GND
GND
5V
5V
GND
12V
GND
17V
20
18
16
14
12
10
8
6
4
2
RL-ON
5V
D
E
T
GND
GND
5
VST
5V
GND
12V
GND
17V
1
19
17
15
13
11
9
7
5
3
P1
P_
KEY
GPIO90
A
P
2125
3.3
VS
T
Mstar
FET
(Q303)
A
Z
1084S
-3.3
A
Z
1117H-A
DJ
3
.3V
_MST
1
.8V
_MST
1.3
V_V
D
D
C
M
P
2305
D
S
A
Z
1117H-1
.2
1.2
V_P
V
S
B
VSB IC
DDR
5
VST
FET
(Q
504)
Po
w
e
r_S
W
V
SB_
C
tr
l
5V_
M
S
T
AV
DD_
M
P
L
L
VDD
P
A
V
DD_
ME
MP
L
L
AVDD_A
D
C
AVDD_
D
M
AVDD_OTG
AVDD_A
U
AVDD
_
LPLL
AVDD_
3
3
AV
DD_
DDR
1.3V
_
V
D
D
C
AV
DD_
M
L
IN
K
DD
R1.
8
V
3.3
V_P
V
S
B
1.2V
_D
V
D
D
3.3V
_D
V
D
D
3.3V
_
A
VD
D
USB
M
IC
2019
Y
M
6
5V
5V_
U
S
B
HDMI
sw
it
c
h
12V
K
IA
7808
A
F
5V_
T
U
Tun
er
A
udi
o
AM
P
HDCP
NVR
A
M
Se
ri
al
Fl
a
s
h
17V
EE
PRO
M
(RGB)
MA
X3232
EE
PRO
M
(HDMI)
L312
L326
L313
L301
L325
IC
30
1
L323
L308
L307
L306
L305
L304
L303
L302
L309
L321
L316
L319
L320
L504
IC
30
2
IC
30
5
IC
3
0
4
IC
80
4
IC
50
3
IC
50
2
3.3V
_
A
MP_
D
V
D
D
3.3V
_
A
MP_
A
V
D
D
L1011
L1010
L501
L503
L324
L331
<Mstar
Po
wer Se
q
ue
n
ce
>
A
Z
1117H-A
DJ
IC
50
5
- 15 -
HW Power On Sequence (LGE2872A)
- 16 -
EXPLODED VIEW
A10
900
901
400
520
590
240
250
300
305
301
303
302
200
120
580
260
270
603
602
501
A2
LV1
570
560
310
330
601
600
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.
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
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