Memc Schematic Diagram - Sharp LC-19LE320 Service Manual

[5] MEMC SCHEMATIC DIAGRAM

1. MT8282 DC CONVERTER
MEMC POWER VCC +12V/5V
+12V/5V
1
+12V/5V
FB402 220R/2000mA
1
FB403 220R/2000mA
C407
100nF 25V
POWER M82_DV33
+12V_5V
U401
G5657F12U
1
C408 R401
NC
2
10uF 16V 15K 1/16W 5%
IN
7
EN FB
6
OFF ON COMP SS
C410
R403 180P 50V
10K 1/16W 5% R405 100N 16V
0R05 1/16W
POWER M82_AV33
M82_DV33
FB405
220R/2000mA
1
C424 C425
1uF 16V 10nF 16V
2008-03-14
+12V_5V
2
2
+ C405 C409
100nF 25V
100UF 25V
M82_DV33
L401
4.7uH
3
LX
D401
SS3P4
5
+
8
R1
C411
R404
R2
24K +-1% 1/16W
Vout =0.92x(1+R1/R2) = 0.92 x ( 1 + 62K/ 24K ) = 3.3V
POWER M82_AV12
M82_AV33
M82_AV33
C427
2
+
100UF 16V
+ C423
C426
100UF 16V 10nF 16V
CORE POWER M82_DV11
+12V_5V
U402
G5657F12U
1
C403
NC LX
2
10uF 16V
IN
7
EN FB
6
OFF ON COMP SS
C412
470pF 50V 100N 16V
R411
M82_DV33
R406
10K 1/16W 5%
R427 6K8 1/16W 5%
47K 1/16W 5%
Vout =0.92x(1+R1/R2) = 0.92 x ( 1 + 3.9K/ 18K ) = 1.19V
M82_AV12 = 1.2637 - 1 x 0.064 = 1.1993 V
U403
G1117T63Uf
3 2
VIN VOUT
C428
100N 16V R1 C429 C430
1uF 16V 10uF 10V
R414
750R 1/16W 1%
R2
Vout = 1.25 x ( 1+ [R2/R1] ) = 1.25 x (1 + 750/68K) = 1.2637V
155
LC-19LE320, LC-22LE320, LC-26LE320, LC-32LE320, LC-37LE320, LC-42LE320
M82_DV11
L402
4.7uH
3
D402 +
5
SS3P4
8
R1
C421
R457
R2
18Kohm 1/16W +/-1%
M82_AV12
R412
1R 1/10W1%
C432
C431 +
100UF 16V
100N 16V
+12V/5V
3 +12V/5V
M82_DV33
3,4 M82_DV33
M82_AV33
3,5 M82_AV33
M82_AV12
3,4,5 M82_AV12
M82_DV11
3 M82_DV11
GND
3,4,5 GND