LG 55LH85 Service Manual page 17

RS232C & ISP
+3.3V_ST
L502
BLM18PG121SN1D
C546 0.33uF
IC500
C512
MAX3232CDR
0.1uF
C1+ VCC
1 16
C503
0.1uF
V+ GND
2 15
C507
0.1uF
C1- DOUT1
3 14
C2+ RIN1
4 13
C504
0.1uF
C2- ROUT1
5 12
V- DIN1
6 11
C505
0.1uF
DOUT2 DIN2
7 10
RIN2 ROUT2
8 9
EAN41348201
USB
JK503
UB01123-4HHS-4F
USB_DM 9:AO37
USB_DP 9:AO37
D501 D502
CDS3C30GTH CDS3C30GTH
30V 30V
OPT OPT
WIRELESS RX BOARD POWER
+5V_Wireless
P502
12507WS-08L
+12V
1
2
3
C502 C508 C510
47uF 10uF 0.1uF
25V 25V 50V
4
C500 C506
0.1uF 10uF
16V 16V
5
6
7
8
9
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.
IN/OUT
R509 100
R510 100
C544 C545
C542 C543 D503 D504
220pF 47pF
220pF 47pF CDS3C30GTH CDS3C30GTH
30V 50V 50V 30V
50V 50V
+3.3V_ST
R516 R517
4.7K 4.7K
OPT
OPT R508 0
UART_RXD
9:AC30
R507 0 OPT
UCOM_RXD 12:AF17
R500 0
RXD_232
AF22
UART_SEL2
AJ22;12:U25
USB POWER CONTROL OPTION
+5V_EXT
Pin to Pin Replacable with T-MIC2019YM6
L505
CB3216PA501E
IC506
MIC2009YM6-TR
READY_USB_POWER
L500
CB3216PA501E
VOUT VIN
6 1
USB_PWR_CTL
ILIMIT GND
5 2
C501
330uF
R540
25V FAULT/ ENABLE
180 4 3
USB_PWR_CTL
EAN43439401
USB_PWR_CTL
R541
47
USB_PWR_CTL
IC501
APW7080KAI-TRL
VIN GND
C551
1 8
68pF
R506
100K EN FB
2 7
R558
R1
59K
UGND COMP 1%
3 6
R556
R518
C516 4A/10ms 11K R2
1uF 24K 1%
VCC LX
4 5
L514
C547
1uF EAN50480501 10uH
C509 C514
100uF 22uF
D505
16V 16V
MBRS340T3G
500MV
RX_EN
AC3;12:X25
C515
1uF
DO JAE GEUN
ISP FOR S5
+5V
10
5
9
4
8
3
R542 220
7
ISP_TXD
R521 0
OPT
9:AC30;Y25
R543 220 2
ISP_RXD 6
R522 0
9:AC30;Y26 OPT
1
KCN-DS-1-0088
JK502
6630G00001C
+3.3V_ST +3.3V_ST
IC505
NLASB3157DFT2G
SELECT B1
6 1 TXD_WIRELESS
UART_SEL1
9:AO31;2:J22
ON SEMICONDUCTOR 12:T25
ANALOG SWITCH
VCC GND
5 2
C529 C530
0.1uF 0.1uF
A B0
4 3 OPT
EAN38256201
R504
[CONTROL IR & LED]
+3.3V
+5V_EXT
C513 C511
10uF 0.1uF
10V
16V
USB_PWR_CTL USB_PWR_CTL
R519
USB_CTL 10K
9:AO18
USB_PWR_CTL
USB_OCD 9:AO31
4:O26;4:Q25;12:AF18
RX B/D FAN
Vout=0.8*(1+R1/R2)
+5V_Wireless
Q504
SI4925BDY
C549 R513 C553 S1 1 8 D1_2
0.1uF 27K 1uF
16V
G1 2 7 D1_1
P501
SMW200-03
S2 3 6 D2_2
R514
8.2K
G2 4 5 D2_1
1
C
R511
10K B Q503
2
2SC3052 EBK32753101
Protect In-rush current
C554
C552 E
1uF 100uF
3
16V
OPT
OPT
P500
TJC2508-4A
UART CONNECTION
1
================================
MICOM
--------------------------------
2
9:AC30;R25 UART_SEL1: L
ISP_RXD
UART_SEL2: L
3
--------------------------------
S5 <-> RX: CON
4
CONNECT
ISP_TXD
================================
9:AC30;R25
ISP_S5
IC503
NLASB3157DFT2G
SELECT B1
6 1
UART_TXD RXD_232
ON SEMICONDUCTOR 9:AC30 L23
ANALOG SWITCH
VCC GND
5 2
A B0
4 3
UCOM_TXD RXD_S5
12:AF17 9:AO31
EAN38256201
OPT
0
R537
0
+3.3V_ST
EYE_LED_SCL
9:AT6;12:AF16
R538
0
R527
R530 EYE_LED_SDA
4.7K 4.7K
L508 9:AT6;12:AF16
R525 BG2012B080TF
100 1%
KEY1
12:W8
L507
R526
BG2012B080TF
100 1%
KEY2
12:W8
+5V_ST
L506
CB3216PA501E
C522
0.1uF
16V
R539 C517 D500
0.1uF
0 CDS3C05HDMI1
16V
OPT
OPT
+3.3V
L512
CB3216PA501E
C524 C527
+3.3V_ST
1000pF
0.1uF
50V
16V
R535
R532 R534 10K
0 0
OPT
LED_ON
12:T8
C
B
Q500 C541
RL_ON
0.1uF
R531 R533 2SC3052
0 4.7K
FOR EMI
R545 E OPT
OPT OPT
120K
OPT
+12V
L510
CB3216PA501E
READY
FAN_POWER +5V_EXT +5V_ST
R549
S
10K
C531
Q501 G
10uF
RTR030P02
16V
R550
C518
560
D
+3.3V_ST
0.1uF
Q502
C
2SC3052
R551
B
FAN_EN
10K AM6;12:AF15
FAN_ERROR
OPT
9:AO26;12:AF16 E
R552
RX_EN
10K O4;12:X25
READY FOR FAN POWER VOLTAGE CONTROL
S5 RX_B/D
H X
L H
CON DIS-CON
+3.3V_ST
IC502
NLASB3157DFT2G
B1 SELECT
1 6
UART_SEL2
P22;12:U25
ON SEMICONDUCTOR
GND ANALOG SWITCH VCC
2 5
C521
0.1uF
B0 A
3 4
RXD_WIRELESS
2:J23
EAN38256201
P503
12507WS-12L
SCL
1
SDA
2
C533 C534
100pF 100pF
GND
50V 50V 3
OPT OPT
KEY1
4
KEY2
5
ST_5V
6
C523 GND
1000pF 7
50V
WARM_ST
8
L509
BG2012B080TF IR
9
IR
12:M15
C528
ZD502
100pF GND
5.6B
10
50V
3.3V
11
LED_ON
12
13
.
R515 R553
10K 2K
OPT OPT
IC504
MP2305DS
C539
0.1uF
50V
BS SS
1 8
R529
IN EN 100
2 7
FAN_EN
C535
READY AC4;12:AF15
0.01uF
SW COMP
C532 50V
3 6
R524
C536 FAN_POWER
0.47uF
5600pF 9.1K
GND FB
25V
4 5 50V
R528
10K
EAN33143501 R2
1%
R523
R1 56K
1%
L513
22UH C537 C538 C540
22uF 0.1uF 0.1uF
16V 16V 16V
Vout=0.923*(R1+R2)/R2
---------------------
JUNO
09.02.04
IN/OUT
1 12