LG 24LN451B Service Manual page 24

DSUB RGB
R408
10K
121128
DSUB (NON 28INCH MODEL) ESD improve
OPT->APPLY
DSUB (NON 28INCH MODEL) VA400 VA401
20V 20V
121128
121128
ESD improve
ESD improve
OPT->APPLY
OPT->APPLY
2:E18 DSUB_VSYNC JP400
JP401
2:E18 DSUB_HSYNC
DSUB (NON 28INCH MODEL)
R488
0
DSUB_B+
R400
DSUB (NON 28INCH MODEL)
75
DSUB (NON 28INCH MODEL)
R489 0
DSUB_G+
DSUB (NON 28INCH MODEL)
R401
DSUB (NON 28INCH MODEL)
75
R490
JP406
0
DSUB_R+
R402
75
DSUB (NON 28INCH MODEL)
11.10.31
To Improve EMI
11.10.27
To Improve Ringing issue
LOW capacitance Part apply
DSUB (NON 28INCH MODEL)
DSUB (NON 28INCH MODEL)
DSUB (NON 28INCH MODEL)
DEBUG FOR MSTAR
+5V_Normal+3.3V_ST
(NC)MSTAR DEBUG_28" ONLY
(NC)MSTAR DEBUG_28" ONLY
R405 R406
10K 10K
(NC)MSTAR DEBUG_28" ONLY
(NC)MSTAR DEBUG_28" ONLY
0
RGB_DDC_SDA
R403
JP430
(NC)MSTAR DEBUG_28" ONLY
0
RGB_DDC_SCL
R404
JP431
PM_RXD
R410
100
PM_TXD
R411
100
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 ⓒ 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
+5V_Normal
DSUB (NON 28INCH MODEL)
D416
MMBD6100
A2
C
A1
R413
10K
RGB_DDC_SCL
RGB_DDC_SDA
DSUB (NON 28INCH MODEL)
VA415
20V
DSUB (NON 28INCH MODEL)
121128
ESD improve
OPT->APPLY
+3.3V_ST
VA417
20V
JP408
JP409
R434
47K
DSUB_DET
DSUB (NON 28INCH MODEL)
C
DSUB (NON 28INCH MODEL)
Q400
JP407 R435
B MMBT3904(NXP)
DSUB (NON 28INCH MODEL)
10K
VA418
E
JP405 20V
121128
ESD improve
OPT->APPLY
DSUB (NON 28INCH MODEL)
JK400
SPG09-DB-010
DSUB (NON 28INCH MODEL)
P400
12507WS-04L
1
2
3
4
5
PC AUDIO(SIDE)
+3.3V_Normal
DSUB (NON 28INCH MODEL)
R407 DSUB (NON 28INCH MODEL)
12.08.10
470K
47K->470K R409
1K
JP411 VA407
20V
DSUB (NON 28INCH MODEL) DSUB (NON 28INCH MODEL)
DSUB (NON 28INCH MODEL)
R444
15K
6 M6
DSUB (NON 28INCH MODEL)
JP404 C414 R442
VA419 R446
470K
20V 220pF 10K
1 M1
50V DSUB (NON 28INCH MODEL)
DSUB (NON 28INCH MODEL)
DSUB (NON 28INCH MODEL)
3 M3_DETECT R445
15K
4 M4
JP403 DSUB (NON 28INCH MODEL)
R441
C413 470K
VA420 R447
5 M5_GND
220pF
20V 10K
50V
KJA-PH-1-0177 DSUB (NON 28INCH MODEL) DSUB (NON 28INCH MODEL)
JK401
JP402
USB(SIDE)
C400
0.1uF
PC_AUDIO_DET
3AU04S-305-ZC-(LG)
PC_R_IN JK402
JP429
PC_L_IN
JP428
JP427
VA424
VA425
20V
20V
121128
121128
ESD improve
ESD improve
OPT->APPLY
OPT->APPLY
Jack Shield (HDMI1, HDMI2, RGB)
JackShield(for NonCKD)
MGJ63348201
120918
JIG GND Point addition
JP_GND1 JP_GND2 JP_GND3 JP_GND4
NC4_S7LRM
INTERFACE
IC400
AP2191DSG
+5V_Normal
NC GND
8 1
OUT_2 IN_1
7 2
OUT_1 IN_2
6 3
FLG EN C405
5 4
USB_CTL 0.1uF
R417
10K
R419
47
USB_OCD
USB_DM
1:AL8
USB_DP 1:AL7
111026
ESD diode deletion
EAH39491601 2EA
120103
ESD diode addition
EAF61530301 2EA
JackShield(for CKD)
M1
M1-*1
MGJ63348202
EAX65410201
2013.05.25
4 12
LGE Internal Use Only