LG 42LV375H Service Manual page 26

R2428
22
IR
2SC3052
IR_OUT
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.
rol&IR/LED
Copyright © 2011 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
CONTROL
SCL1_3.3V
IR & LED
+3.5V_ST
SDA1_3.3V
R2404 R2405
10K 10K
L2401
R2401
BLM18PG121SN1D
100
007:AA15 KEY1
R2402 L2402
BLM18PG121SN1D
100
007:AA15 KEY2
C2401 C2402
0 . 1 u F 0 . 1 u F
+3.5V_ST
+3.5V_ST
BLM18PG121SN1D
R2425
+3.5V_ST
1K
+3.5V_ST
R2429
47K
R2430
C 10K
Q2406
R2426
B LED_B/LG_LOGO
E 3.3K
R2431 R2410
OPT
C 47K 100
B
Q2405
E
C2407
2SC3052 +3.3V_NORMAL
100pF
50V
R2427
0
OPT
L2404
BLM18PG121SN1D
+3.5V_ST
R2406
+3.5V_ST
1K
LED_R/BUZZ
R2403
22
R2408
47K
R2407
Z e n e r D i o d e i s
C 10K
Q2401
B
2SC3052
E
R2409 c l o s e t o w a f e r
C 47K
B
Q2402
E
2SC3052
R2422
0
OPT
OPT
R2435
100
CLOCK_SCL
C2412
15P_IR
18pF
R2436
100 50V
S/T_SCL OPT
OPT
R2437
100
CLOCK_SDA
15P_IR
C2413
R2438
100 18pF
S/T_SDA
50V
OPT
R2432
100
D2403
C2408
1000pF CDS3C05HDMI1
5.6V
50V
OPT
R2433
100
P2401 P2402
C2409 D2404
1000pF CDS3C05HDMI1 12507WR-12L 12507WR-15L
5.6V 12P_IR 15P_IR
50V
OPT
1 1
2 2
D2402 3 3
D2401 5.6V
5.6V AMOTECH
AMOTECH
4 4
5 5
L2403
6 6
C2403 C2404
0 . 1 u F 1000pF
16V 50V
7 7
R2413 1.5K
8 8
9 9
D2405
OPT
5.6V
C2410
AMOTECH
0 . 1 u F
10 10
16V
11 11
C2406
C2405
1000pF
0 . 1 u F 12 12
50V
16V
13
13
R2414
14
1.5K
OPT
R2416
10K 15
16
15P_IR
D2406
CDS3C05HDMI1
5.6V
15P_IR
D2407
CDS3C05HDMI1
5.6V
A1.8_ETHUB
ETHERNET CONNECT
JK4700
L4701
XRJV-01V-D12-180
CIC21J501NE
1
EPHY_TXOP1
013:U15
R4706
4 9 . 9
1% 2
D4700
R4707
C4702 C4700
5.6V
4 9 . 9 0 . 1 u F
0 . 1 u F
16V
1%
3
013:U15 EPHY_TXON1
4
EPHY_RXIP1
R4708
4 9 . 9
1% 5
C4703 D4701 D4705
R4709
5.6V 5.6V
0 . 1 u F 4 9 . 9
1% 6
EPHY_RXIN1
C4701
0 . 1 u F
D4702
16V
7
5.6V
8
D3.3V
R4700 510
D1
D2
013:AM23 LAN_LINK1
R4701 510
D4703
D3
5.6V
D4
013:AM23 LAN_ACT1
D4704
5.6V
T r a c e i m p e d a n c e : 1 0 0 o h m d i f f e r e n c t i a l i m p e d a n c e t o G N D p l a n
5 m i l s t r a c e w i d t h w i t h 7 m i l s a i r g a p o n P / N p a i r .
A d j a c e n t T X / R X d i f f e r e n t i a l p a i r s s h o u l d b e s e p a r a t e d b y m o r e t h
1 5 m i l s t o e a c h o t h e r
A1.8_ETHUB
JK4701
XRJV-01V-D12-180
L4702
CIC21J501NE
EPHY_TXOP0 1
R4714
4 9 . 9
D4710
1%
2
5.6V C4712
C4710
R4715 0 . 1 u F
0 . 1 u F 4 9 . 9 16V
1% 3
EPHY_TXON0
4
EPHY_RXIP0
R4716
4 9 . 9
1%
D4711 D4712 5
C4711
5.6V 5.6V
R4717
0 . 1 u F 4 9 . 9
1%
6
EPHY_RXIN0
C4713
0 . 1 u F
16V
7
D4713
5.6V
8
D3.3V
R4718 510
D1
D2
LAN_LINK0
R4719 510
D4714
D3
5.6V
LAN_ACT0 D4
D4715
5.6V
Chameleon(EU_GP2_BCM3556)
2 0 1 0 . 1 2 . 2 0
xxLV375H-ZA
I R / E t h e r n e t
6
9
9
LGE Internal Use Only