LG 42LD450 Service Manual page 23

CONTROL
IR & LED
R2428
22
IR
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.
Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
+3.5V_ST
R2405
R2404
10K
10K
1% 1%
R2401 BLM18PG121SN1D
100
KEY1
R2402
100
KEY2
+3.5V_ST
+3.5V_ST
R2425
47K
R2429 +3.5V_ST
47K
R2430
C
Q2406 10K
R2426
B
2SC3052
3.3K
E
R2431
OPT
C 47K
B
Q2405
E
2SC3052
COMMERCIAL +3.5V_ST
R2427
0 R2406
47K
OPT
R2403
Commercial_EU
22
IR_OUT
Commercial
C
Q2401
2SC3052
E
Commercial_EU
R2422
0
Commercial_US
WIRELESS +3.5V_ST
R2420
47K
R2417
WIRELESS
22
IR_PASS
WIRELESS
C
Q2404
2SC3052
E
WIRELESS
EYEQ/TOUCH_KEY
R2411
100
NEC_EEPROM_SCL
C2408
1000pF
50V
L2401 OPT
EYEQ/TOUCH_KEY
100
L2402
D2402 NEC_EEPROM_SDA
BLM18PG121SN1D
5.6V
R2412
C2409
AMOTECH
1000pF
C2401 C2402
0.1uF 0.1uF 50V
OPT
D2401
5.6V
AMOTECH
+3.5V_ST
L2403
BLM18PG121SN1D
R2413 1.5K
C2403 C2404
LED_B/LG_LOGO
0.1uF 1000pF
16V 50V
R2410
100
C2407
100pF
+3.3V_Normal
50V
L2404
BLM18PG121SN1D
+3.5V_ST
R2414
LED_R/BUZZ
R2408
C2405 C2406
47K 1000pF
0.1uF
R2407 Commercial 50V
16V
10K
B
R2409
Commercial_EU C 47K
B
Q2402 E Commercial
2SC3052
Commercial
Zener Diode is
close to wafer
+3.5V_ST
R2419
47K
R2418 WIRELESS
10K
B
WIRELESS
R2421
C 47K
B
Q2403 WIRELESS
E
2SC3052
WIRELESS
P2401
12507WR-12L
5.6B
D2403
1
2
5.6B
D2404
3
JP2407
4
JP2408
5
6
7
OPT
C2410
0.1uF
16V JP2409 8
JP2410
9
D2405
5.6B 10
JP2411 11
12
1.5K
OPT
13
R2416
10K
GP2_Saturn7M Ver. 1.2
IR & LED
6
LGE Internal Use Only