LG 22MT47D, Service Manual

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THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
POWER
2014/08/14
1 12
MT57
R425
0
R423
10K
1%
HD(12V Panel)
R409
10K
HD(12V Panel)
R419
33K
R436
4.7K
R422
100K
1%
HD(12V Panel)
R440
22K
R434
100K
R410
2K
OPT
R439
10K
R413
2K
OPT
R438
100
R418
33K
HD(12V Panel)
R403
47K
R426
10K
1%
R424
4.7K
1%
R421
43K
1%
HD(12V Panel)
R411
100K
R437
0
HD(12V Panel)
R446
0
HD(12V Panel)
R420
33K
R401
10K
R417
2K
OPT
R408
68
R407
68
R406
68
HD(12V Panel)
R415
68
R416
75K
1%
R441
100K
23.6"FHD_NOT
R442
10K
FHD(5V Panel)
R400
10K
R414
10K
PANEL_CTL
MULTI_ON
POWER_ON/OFF1
MULTI_ON
R432
10K
1%
LED_AMBER
L401
10uH
L402
10uH
HD(12V Panel)
L403
10uH
+3.3V_ST
R447
0
FHD(5V Panel)
+12V_Normal
R435
0
FHD(5V Panel)
R3471
1K
FHD_NON 23.6"
+12V_Normal
R3472
0
FHD_NON 23.6"
+12V_PANEL_POWER
C414
0.1uF
50V
C406
0.1uF
50V
HD(12V Panel)
+3.3V_Normal
C417
0.1uF
16V
HD(12V Panel)
+3.3V_ST
C422
10uF
16V
HD(12V Panel)
+3.3V_Normal
C401
10uF
25V
OPT
+19V
C408
0.1uF
50V
C412
0.1uF
50V
HD(12V Panel)
+5V_Normal
C407
0.1uF
50V
+5V_PANEL_POWER
C413
0.1uF
50V
+5V_Normal
C402
10uF
25V
OPT
+3.3V_ST
C426
10uF
10V
OPT
C423
22uF
6.3V
Q402
PMV48XP
G
D S
C429
0.1uF
16V
+1.15V_VDDC
C438
0.1uF
16V
JP401
JP400
C434
1uF
10V
OPT
C419
0.1uF
16V
JK400
KJA-DC-1-0032
1
2
4
C418
0.1uF
16V
C400
47uF
25V
105C
C421
22uF
6.3V
Q400
MMBT3904(NXP)
E
B
C
Q401
MMBT3904(NXP)
E
B
C
C425
10uF
10V
OPT
Q3451
FHD_NON 23.6" E
B
C
C424
10uF
16V
HD(12V Panel)
D400
MMBD6100
A2
C
A1
C430
0.1uF
16V
L400
4.7uH
C439
4.7uF
10V
C427
10uF
10V
R442-*1
4.7K
HD(12V Panel)
C431
10uF
10V
R441-*1
22K
23.6"FHD
C432
0.1uF
16V
R442-*2
2.7K
23.6"FHD
C416
0.1uF
50V
Q403
G
D S
C420
0.1uF
16V
C411
0.1uF
50V
C410
0.47uF
16V
OPT
C440
4.7uF
16V
C436
1uF
16V
HD(12V Panel)/23.6"FHD
C428
0.1uF
25V
HD(12V Panel)
C415
0.1uF
16V
+1.5V_DDR
IC404
AZ1117EH-ADJTRG1
ADJ/GND
OUT IN
ZD400
2.5V
+3.3V_Normal
R444 200 1/16W 1%
R443 1K 1/16W 1%
C433
10uF
10V
C435
10uF
10V
R402
1K
OPT
R404
1K
OPT
R405
1K
OPT
R456 4.7K
R427
1.6K
1%
R428
1.6K
1%
R429
1K
1%
R412
15K
C404
2.2uF
25V
HD(12V Panel)
C405
2.2uF
25V
C403
2.2uF
25V
C409
2.2uF
25V
IC402
MP2315GJ
3
SW
2
IN
4
GND
1
AAM
5
BST
6
EN/SYNC
7
VCC
8
FB
IC400
MP2315GJ
HD(12V Panel)
3
SW
2
IN
4
GND
1
AAM
5
BST
6
EN/SYNC
7
VCC
8
FB
IC401
MP2315GJ
3
SW
2
IN
4
GND
1
AAM
5
BST
6
EN/SYNC
7
VCC
8
FB
IC403
MP2315GJ
3
SW
2
IN
4
GND
1
AAM
5
BST
6
EN/SYNC
7
VCC
8
FB
R430
47K
1%
R431
8.2K
1%
Q403-*1
AO3407B
MT47
G
D S
PANEL POWER CONTROL
Check the Ripple
R2
Vout = 1.25*(1+R2/R1) + Iadj*R2
R1
3.3V TO 1.5V LDO(DDR Power)
3.3V NORMAL SWITCH
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Only for training and service purposes
LGE Internal Use Only