LG 50PK550-SA (CHASSIS:PB01A) Service Manual ▷ View online
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
2N7002(F)
Q200
G
D
S
22
R251
22
R244
D3.3V
0
R
24
1
4
.7
K
R
24
6
4
.7
K
R
24
5
2N7002(F)
Q201
G
D
S
4
.7
K
R
25
3
0
R
25
4
22
R256
4
.7
K
R
25
5
D3.3V
22
R252
0.1uF
16V
C224
BLM18PG121SN1D
L201
A1.2V
EPHY_RDN
54MHz_XTAL_N
54MHz_XTAL_N
002:H1
0
.1
u
F
C
22
1
F
u
1.
0
25
2
C
0.1uF
C223
3.9K
R213
100pF
C202
D3.3V
A3.3V
EPHY_TDP
BLM18PG121SN1D
L208
A2.5V
F
u
1.
0
62
2
C
EPHY_TDN
10uF
READY
C251
D3.3V
F
u
1.
0
56
2
C
BLM18PG121SN1D
L203
22
R248
A3.3V
22
R250
0
.1
u
F
C
22
9
0.01uF
C222
EPHY_RDP
0
.1
u
F
C
22
0
A2.5V
1K R218
TJC2508-4A
P200
1
2
3
4
0
.1
u
F
C
21
9
12pF
C268
0
.1
u
F
C
23
2
F
u
1.
0
55
2
C
120
R214
A2.5V
390
READY
R220
A1.2V
A2.5V
BLM18PG121SN1D
L205
F
u
1.
0
35
2
C
54MHz_XTAL_P
002:H1
A2.5V
560
R212
10uF
C250
54MHz_XTAL_P
BLM18PG121SN1D
L202
A1.2V
1
.5
K
R
20
0
F
u
1.
0
52
2
C
FE_TS_CLK
A1.2V
D3.3V
12pF
C269
FE_TS_SYN
1
0
0
8
L
S
-2
7
2
X
JL
C
L
2
1
0
240
R217
A2.5V
A1.2V
F
u
1.
0
72
2
C
1
.5
K
R
21
1
BLM18PG121SN1D
L206
D3.3V
54
M
H
z
X
20
0
2
1
3
3
3
p
F
C
26
7
6
0
4
R
24
9
F
u
1.
0
03
2
C
FE_TS_SERIAL
0.1uF
C262
BLM18PG121SN1D
L204
F
u
1.
0
36
2
C
SYS_RESET
001:D3
A1.2V
0.1uF
C249
A1.2V
10uF
C261
BLM18PG121SN1D
L209
F
u
1.
0
06
2
C
A2.5V
A1.2V
F
u
1.
0
95
2
C
A1.2V
BLM18PG121SN1D
L207
0.1uF
C257
JTAG_TMS
/JTAG_TRST
/JTAG_TRST
JTAG_TCLK
JTAG_TDO
JTAG_TDI
DISP_EN
TF05-51S
P202
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
MOD_ROM_TX
100
R242
MOD_ROM_RX
27K
R243
PC_SER_CLK
PC_SER_DATA
LVDS_TX_1_DATA1_N
LVDS_TX_0_DATA3_N
LVDS_TX_1_DATA2_P
LVDS_TX_0_CLK_P
LVDS_TX_0_DATA2_P
LVDS_TX_1_DATA4_N
LVDS_TX_1_DATA1_P
LVDS_TX_0_DATA2_N
LVDS_TX_1_DATA4_P
LVDS_TX_0_CLK_N
LVDS_TX_0_DATA1_P
LVDS_TX_1_CLK_P
LVDS_TX_1_DATA3_N
LVDS_TX_0_DATA4_N
LVDS_TX_0_DATA0_P
LVDS_TX_0_DATA0_N
LVDS_TX_1_DATA0_N
LVDS_TX_1_CLK_N
LVDS_TX_1_DATA0_P
LVDS_TX_1_DATA2_N
LVDS_TX_0_DATA4_P
LVDS_TX_0_DATA3_P
LVDS_TX_1_DATA3_P
LVDS_TX_0_DATA1_N
LVDS_TX_0_DATA1_P
LVDS_TX_0_DATA3_P
LVDS_TX_1_DATA3_N
LVDS_TX_1_DATA2_N
LVDS_TX_0_DATA0_N
LVDS_TX_1_CLK_N
LVDS_TX_0_DATA2_N
LVDS_TX_1_DATA4_P
LVDS_TX_1_DATA1_P
LVDS_TX_1_DATA3_P
LVDS_TX_0_DATA3_N
LVDS_TX_0_DATA4_N
LVDS_TX_0_DATA4_P
LVDS_TX_1_DATA2_P
LVDS_TX_1_CLK_P
LVDS_TX_0_CLK_P
LVDS_TX_1_DATA4_N
LVDS_TX_0_CLK_N
LVDS_TX_0_DATA1_N
LVDS_TX_1_DATA1_N
LVDS_TX_0_DATA2_P
LVDS_TX_0_DATA0_P
LVDS_TX_1_DATA0_P
LVDS_TX_1_DATA0_N
SCL3_3.3V
0 0 1 : B 3 ; 0 0 1 : I 4
SDA3_3.3V
0 0 1 : B 3 ; 0 0 1 : I 4
USB_DP
BT_DP
BT_DM
USB_DM
1K
R
23
2
D3.3V
JTAG_TDO
002:D4
1K
R
23
4
RESET
001:C3
JTAG_TMS
002:D4
1K
R
23
5
JTAG_TCLK
002:D4
JTAG_TDI
002:D4
/JTAG_TRST
002:D4
YFDW254-14S
READY
P201
14
VIO
9
TCK
4
GND
13
DINT
8
GND
3
TDI
12
NC
7
TMS
2
GND
11
nRST
6
GND
1
nTRST
10
GND
5
TDO
1K
R237
1K
R
23
3
1K
R
24
0
1K
R
23
8
1K
R
EA
D
Y
R
23
6
2.7K
READY
R230
2.7K
R223
2.7K
R216
PK950
WATCH_DOG_RESET
001:D3
2.7K
R224
READY
2.7K
R231
4 9 . 9
R207
0.15uF
C214
4 9 . 9
R202
COMP_R_IN_2
010:Q23
0.015uF
C203
4 9 . 9
R206
4 9 . 9
R204
4 9 . 9
R209
0
.0
4
7
u
F
C
24
1
0.015uF
C211
0
.0
4
7
u
F
C
23
6
4 9 . 9
R203
0.015uF
C207
AV_R_IN_1
010:K25
0.15uF
C213
AV1_INCM
002:D5
0.015uF
C206
4 9 . 9
R201
AV_L_IN_1
010:K24
0.15uF
C217
4 9 . 9
R205
0.15uF
C215
0
.0
4
7
u
F
C
24
2
4 9 . 9
R208
0
.0
4
7
u
F
C
23
9
0
.0
4
7
u
F
C
23
7
0
.0
4
7
u
F
C
24
3
0
.0
4
7
u
F
C
23
5
0
.0
4
7
u
F
C
24
0
SIDE_INCM
002:D5
PC_INCM
002:D6
4 9 . 9
R210
0
.0
4
7
u
F
C
23
8
0.015uF
C210
COMP_L_IN_2
010:Q22
COMP2_INCM
002:D6
0.015uF
C204
0.015uF
C205
COMP1_INCM
002:D5
0.15uF
C216
0.015uF
C209
0
.0
4
7
u
F
C
23
4
0.015uF
C212
0.015uF
C208
SIDE_LIN
PC_L_IN
COMP_L_IN_1
PC_R_IN
COMP_R_IN_1
SIDE_RIN
TP213
TP211
TP212
SIDE_INCM
5 . 1
R225
5 . 1
R229
5 . 1
R227
5 . 1
R226
5 . 1
R228
COMP1_INCM
AV1_INCM
PC_INCM
TP214
COMP2_INCM
TP210
2.7K
R221
2.7K
R222
D3.3V
3
.3
K
R
23
9
3
.3
K
R
24
7
4
.7
u
F
C
20
0
4.7uF
C201
4
.7
u
F
C
22
8
4
.7
u
F
C
23
1
4
.7
u
F
C
21
8
4
.7
u
F
C
23
3
4.7uF
C258
4
.7
u
F
C
26
4
4
.7
u
F
C
25
4
4
.7
u
F
C
25
6
4
.7
u
F
C
26
6
0
.4
7
u
F
C
24
6
0
.4
7
u
F
C
24
8
0
.4
7
u
F
C
24
7
0
.4
7
u
F
C
24
4
0
.4
7
u
F
C
24
5
BLM18PG121SN1D
L200
2.7K
R219
USB1_CTL
USB1_OCD
0
R1227
PK550
LGE3556C (C0 VERSION)
IC100
PKT0_CLK
D23
PKT0_DATA
C24
PKT0_SYNC
B26
RMX0_CLK
A25
RMX0_DATA
B25
RMX0_SYNC
A26
POD2CHIP_MCLKI
G23
POD2CHIP_MDI0
D25
POD2CHIP_MDI1
D24
POD2CHIP_MDI2
C25
POD2CHIP_MDI3
E27
POD2CHIP_MDI4
E26
POD2CHIP_MDI5
D28
POD2CHIP_MDI6
D27
POD2CHIP_MDI7
D26
POD2CHIP_MISTRT
E23
POD2CHIP_MIVAL
E24
CHIP2POD_MCLKO
F25
CHIP2POD_MDO0
C27
CHIP2POD_MDO1
C26
CHIP2POD_MDO2
B28
CHIP2POD_MDO3
B27
CHIP2POD_MDO4
A27
CHIP2POD_MDO5
F24
CHIP2POD_MDO6
F23
CHIP2POD_MDO7
E25
CHIP2POD_MOSTRT
C28
CHIP2POD_MOVAL
A28
VDAC_AVDD2P5
AC18
VDAC_AVDD1P2
AF20
VDAC_AVDD3P3_1
AG20
VDAC_AVDD3P3_2
AG21
VDAC_AVSS_1
AF19
VDAC_AVSS_2
AD20
VDAC_AVSS_3
AE20
VDAC_RBIAS
AH22
VDAC_1
AH20
VDAC_2
AG19
VDAC_VREG
AH21
BSC_S_SCL
M25
BSC_S_SDA
M24
USB_AVSS_1
R6
USB_AVSS_2
T6
USB_AVSS_3
R7
USB_AVSS_4
T7
USB_AVSS_5
T8
USB_AVDD1P2
R3
USB_AVDD1P2PLL
U3
USB_AVDD2P5
T4
USB_AVDD2P5REF
T3
USB_AVDD3P3
R4
USB_RREF
U4
USB_DM1
V1
USB_DP1
V2
USB_DM2
U1
USB_DP2
U2
USB_MONCDR
T5
USB_MONPLL
R5
USB_PWRFLT_1
R1
USB_PWRFLT_2
R2
USB_PWRON_1
T2
USB_PWRON_2
T1
EPHY_VREF
P6
EPHY_RDAC
P5
EPHY_RDN
P3
EPHY_RDP
P2
EPHY_TDN
N3
EPHY_TDP
N2
EPHY_AVDD1P2
P1
EPHY_AVDD2P5
P4
EPHY_PLL_VDD1P2
N4
EPHY_AGND_1
N1
EPHY_AGND_2
N5
EPHY_AGND_3
P7
AUDMX_LEFT1
AE6
AUDMX_RIGHT1
AD7
AUDMX_INCM1
AF6
AUDMX_LEFT2
AH4
AUDMX_RIGHT2
AG5
AUDMX_INCM2
AG4
AUDMX_LEFT3
AG6
AUDMX_RIGHT3
AF7
AUDMX_INCM3
AE7
AUDMX_LEFT4
AH5
AUDMX_RIGHT4
AG7
AUDMX_INCM4
AH6
AUDMX_LEFT5
AD8
AUDMX_RIGHT5
AF8
AUDMX_INCM5
AE8
AUDMX_LEFT6
AH7
AUDMX_RIGHT6
AH8
AUDMX_INCM6
AG8
AUDMX_AVSS_1
AF5
AUDMX_AVSS_2
AB9
AUDMX_AVSS_3
AA10
AUDMX_AVSS_4
AB10
AUDMX_AVSS_5
AA11
AUDMX_AVSS_6
AB11
AUDMX_LDO_CAP
AC8
AUDMX_AVDD2P5
AE5
LVDS_TX_0_DATA0_P
B4
LVDS_TX_0_DATA0_N
A4
LVDS_TX_0_DATA1_P
C6
LVDS_TX_0_DATA1_N
B6
LVDS_TX_0_DATA2_P
B3
LVDS_TX_0_DATA2_N
A3
LVDS_TX_0_DATA3_P
A1
LVDS_TX_0_DATA3_N
A2
LVDS_TX_0_DATA4_P
D5
LVDS_TX_0_DATA4_N
D6
LVDS_TX_0_CLK_P
C5
LVDS_TX_0_CLK_N
B5
LVDS_TX_1_DATA0_P
B1
LVDS_TX_1_DATA0_N
B2
LVDS_TX_1_DATA1_P
C2
LVDS_TX_1_DATA1_N
C3
LVDS_TX_1_DATA2_P
D1
LVDS_TX_1_DATA2_N
D2
LVDS_TX_1_DATA3_P
E1
LVDS_TX_1_DATA3_N
E2
LVDS_TX_1_DATA4_P
E3
LVDS_TX_1_DATA4_N
E4
LVDS_TX_1_CLK_P
D3
LVDS_TX_1_CLK_N
D4
LVDS_PLL_VREG
F5
LVDS_TX_AVDDC1P2
F1
LVDS_TX_AVDD2P5_1
F4
LVDS_TX_AVDD2P5_2
F2
LVDS_TX_AVSS_1
C1
LVDS_TX_AVSS_2
F3
LVDS_TX_AVSS_3
C4
LVDS_TX_AVSS_4
A5
LVDS_TX_AVSS_5
E5
LVDS_TX_AVSS_6
E6
LVDS_TX_AVSS_7
D7
LVDS_TX_AVSS_8
E7
LVDS_TX_AVSS_9
F7
LVDS_TX_AVSS_10
G7
LVDS_TX_AVSS_11
H7
CLK54_AVDD1P2
AD27
CLK54_AVDD2P5
AD28
CLK54_AVSS
AD26
CLK54_XTAL_N
AC26
CLK54_XTAL_P
AC27
CLK54_MONITOR
AE25
PM_OVERRIDE
Y23
VCXO_AGND_1
AA23
VCXO_AGND_2
AB24
VCXO_AGND_3
AC24
VCXO_AVDD1P2
AF25
VCXO_PLL_AUDIO_TESTOUT
AF24
RESET_OUTB
P24
RESETB
F6
NMIB
N24
TMODE_0
J 5
TMODE_1
J 4
TMODE_2
J 6
TMODE_3
J 3
SPI_S_MISO
V25
POR_OTP_VDD2P5
AH3
POR_VDD1P2
AB8
EJTAG_TCK
H4
EJTAG_TDI
H3
EJTAG_TDO
H2
EJTAG_TMS
H1
EJTAG_TRSTB
G1
EJTAG_CE0
H6
EJTAG_CE1
H5
PLL_MAIN_AVDD1P2
AB26
PLL_MAIN_AGND
AC25
PLL_MAIN_MIPS_EREF_TESTOUT
AB27
PLL_RAP_AVD_TESTOUT
M6
PLL_RAP_AVD_AVDD1P2
N6
PLL_RAP_AVD_AGND
N7
BYP_CPU_CLK
AA24
BYP_DS_CLK
Y24
BYP_SYS216_CLK
AE24
BYP_SYS175_CLK
AD25
2 1 3
54MHz X-TAL
AUDIO INCM-TP
PLACE NEAR JACKS
BROAD BAND STUDIO
F
H
D
LVDS
USB HUB
EJTAG
0 8 / 1 0 / 2 7
BCM AUDIO/LVDS
BCM AUS DVR
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
WIRELESS_SDA
WIRELESS_PWR_EN
10K
PK950
R1208
P_17V
10K
P
K
95
0
R1204
2SC3052
Q1203
READY
E
B
C
0.1uF
50V
PK950
C1202
IR
P_17V_WIRELESS
22K
PK950
R1209
WIRELESS_DETECT
47K
R1216
READY
WIRELESS_SDA
WIRELESS_DL_TX
10K
R1215
READY
WIRELESS_SCL
4
.7
K
P
K
95
0
R
12
07
PK950
Q1200
E
B
C
+5V_ST
SCL2_3.3V
B
L
M
18
PG
12
1S
N
1D
P
K
95
0
L
1
2
0
1
22
R1212
READY
P_17V_WIRELESS
WIRELESS_DL_RX
2.2K
PK950
R1210
IR_PASS
47K
R1217
READY
2.2uF
PK950
C1203
1K
PK950
R1203
SDA2_3.3V
+5V_ST
IR_PASS
4
.7
K
P
K
95
0
R
12
02
47K
R1214
READY
0.01uF
50V
PK950
C1204
2SC3052
Q1202
READY
E
B
C
WIRELESS_SCL
0
R1213 PK950
KJA-PH-3-0168
JK1201
PK950
14
GND_3
13
I2C_SDA
5
VCC[24V/20V/17V]_5
12
I2C_SCL
11
GND_2
2
VCC[24V/20V/17V]_2
19
GND_5
18
IR
10
RESET
4
VCC[24V/20V/17V]_4
1
VCC[24V/20V/17V]_1
17
GND_4
9
GND_1
8
INTERRUPT
3
VCC[24V/20V/17V]_3
16
UART_TX
7
DETECT
6
VCC[24V/20V/17V]_6
15
UART_RX
GND_6
20
21
SHIELD
EPHY_TDN
002:B4
1000pF
C1201
5
.5
V
D
12
02
5
.5
V
D
12
01
A2.5V
CIS21J121
L1200
XRJV-01V-D12-180
JK1200
1
TDP
2
TD_CT
3
TDN
4
RDP
5
RD_CT
6
RDN
7
NC
8
GND
D1
D1
D2
LINK_LED
D3
D2
D4
ACTIVE_LED
9
GND
EPHY_TDP
002:B4
510
R1201
5
.5
V
D
12
04
EPHY_RDP
002:B4
5
.5
V
D
12
05
5
.5
V
D
12
00
1000pF
C1200
EPHY_ACTIVE_Y
001:H2
EPHY_RDN
002:B4
5
.5
V
D
12
03
510
R1200
EPHY_LINK
D3.3V
D3.3V
AO3407A
Q1201
PK950
G
D
S
0 R1219 PK950
0 R1226 PK950
D3.3V
10
K
R
12
18
R
EA
D
Y
WIRELESS_SCL
WIRELESS_SDA
SDA2_3.3V
SCL2_3.3V
FDV301N
READY
Q1205
G
D
S
FDV301N
READY
Q1206
G
D
S
S
IG
N
11
82
4
ETHERNET JACK
1 2 1 2
ETHERNET/WIRELESS
EAX61536402
WIRELESS DIP POWER ON/OFF
WIRELESS INTERFACE
WIRELESS
WIRELESS_DL_TX(WIRELESS_RX)
WIRELESS_DL_RX(WIRELESS_TX)
WIRELESS I2C LEVEL SHIFTER
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