Skyworth 8M29B, Руководство по обслуживанию, Страница: 34 / 45

5 5
4 4
3 3
2 2
1 1
D
D
C
C
B
B
A
A
PB-ON/OFF
1482OUT
1482FB
1482EN
1482COMP
STB
PB-ON/OFF PB-ADJUST
VCC-PL
PB-ADJUST
1482OUT18
1482FB18
1482EN18
1482COMP18
HW-RST
2
.
5VA
5VA
1
.
32V
3
.
3VA
1
.
8VA
3
.
3VA
5VU 12VA 3
.
3VU
3
.
3VA
2
.
5VA
1
.
8VA
1
.
32V
VCC-PL
VCC-Panel
5V
_
TUNER
1
.
32V
3
.
3VU
5VU
3
.
3VA
5VA
1
.
8VA
3
.
3VU
1
.
8VA
5VA
1
.
8VA
3
.
3VU
24VA
5VU
12VA
24VA
12VA
12-24
VCC-PL
12VA 5VA
VCC-Panel
5VA
+5V
_
USB
12VA
5VA
12VA
5VA
12VA 5VU
ON
_
PBACK
2
PWR-ON/OFF
2
ON
_
PANEL
2
DCR-OUT
2
ADJ-PWM
2
DCR-IN
2
ON
_
USB
_
MOS
8
HW-RST
2
LEDR
2
Title Size
Document Number
Rev
Date:
Sheet
of
1/1
00
.
1
POWER
A2
11
0
Friday, March
0
4, 2
0
11
Title Size
Document Number
Rev
Date:
Sheet
of
1/1
00
.
1
POWER
A2
11
0
Friday, March
0
4, 2
0
11
Title Size
Document Number
Rev
Date:
Sheet
of
1/1
00
.
1
POWER
A2
11
0
Friday, March
0
4, 2
0
11
MST Power supply
L:ON H:OFF
1100mA
Inverter Interface
Power Test Point
1.32V DC-DC
Low ESR
380mA
150mA
230mA
110mA
300mA_DDR2 Max
H:ON L:OFF
PANEL POWER
Power Input
H:ON L:OFF
Note: C103,C104 close to CON6 for EMI
Note: Left C255 NC if want to output PWM puls
5V DC-DC
USB Power
+5V_USB Power trace width should be > 40mil
5V DC-DC
DC-DC Module
2010-3-14
Low ESR
For MCU For DDR
1.8V DC-DC
For Power Drop
+
CA1 1
00
uF
+
CA1 1
00
uF
+
CA17
47
0
uF/16V
+
CA17
47
0
uF/16V
R3
0
4
.
7k
R3
0
4
.
7k
Q415 39
0
4
Q415 39
0
4
1
2 3
C445 0.
1u
C445 0.
1u
C391 NC/
0.
1u
C391 NC/
0.
1u
R12 1
0
K
_
1%
R12 1
0
K
_
1%
Q4
0
6
39
0
4
Q4
0
6
39
0
4
1
2 3
TP5TP5
1
R342
1
00
R
R342
1
00
R
L8 FB L8 FB
C11 47NF C11 47NF
C114 0.
1u
C114 0.
1u
TP12TP12
1
D141 9
.
1V
D141 9
.
1V
C383 3
.
3nF
C383 3
.
3nF
L1
0
8F
B
L1
0
8F
B
R27 1K R27 1K
+
CA11 1
00
uF/16V
+
CA11 1
00
uF/16V
C436 0.
1u
C436 0.
1u
R37 1
0
K
R37 1
0
K
TP3TP3
1
+
CA4 1
00
uF/16V
+
CA4 1
00
uF/16V
C6 0.
1uF
C6 0.
1uF
+
CA19
47
0
uF/16V
+
CA19
47
0
uF/16V
R18
2K
_
1%
R18
2K
_
1%
C379 0.
1u
C379 0.
1u
C38
0
0.
1u
C38
0
0.
1u
C399 0.
1u
C399 0.
1u
R52
1
0
k
R52
1
0
k
C255 NC/
0.
1u
C255 NC/
0.
1u
R58 1
0
K
_
1%
R58 1
0
K
_
1%
Q413 39
0
4
Q413 39
0
4
1
2 3
L116
NC/FB
L116
NC/FB
C13 0.
1uF
C13 0.
1uF
C475 0.
1uF
C475 0.
1uF
C438 0.
1u
C438 0.
1u
L37
22uH
L37
22uH
R14
43K
_
1% R14
43K
_
1%
R42 2K
_
1%
R42 2K
_
1%
+ CA12
1 00 uF/16V
+ CA12
1 00 uF/16V
C116 0.
1u
C116 0.
1u
C387 0.
1u
C387 0.
1u
ADJ
OUT
IN
U38
AMS1117-3
.
3V
ADJ
OUT
IN
U38
AMS1117-3
.
3V
3
2
1
4
Q4
0
7
39
0
4
Q4
0
7
39
0
4
1
2 3
R6
0
1
0
K
_
1%
R6
0
1
0
K
_
1%
U1 CEM9435A U1 CEM9435A
S
1
S
2
S
3
G
4
D
5
D
6
D
7
D
8
Q4
0
9
39
0
4
Q4
0
9
39
0
4
1
2 3
U3 MPS1482 U3 MPS1482
IN
2
BS
1
GND
4
FB
5
COMP
6
EN
7
SS
8
SW
3
C442 0.
1u
C442 0.
1u
C1 0 4 1 0 n C1 0 4 1 0 n
ADJ
OUT
IN
U37
AMS1117-3
.
3V
ADJ
OUT
IN
U37
AMS1117-3
.
3V
3
2
1
4
C481 3
.
3nF
C481 3
.
3nF
C427 0.
1u
C427 0.
1u
C394 NC/
0.
1u
C394 NC/
0.
1u
TP6TP6
1
R25
0
R25
0
R43 5
.
6K
R43 5
.
6K
TP22TP22
1
C32 NC/
0.
1uF
C32 NC/
0.
1uF
R24
1K
R24
1K
+
CA18
47
0
uF/16V
+
CA18
47
0
uF/16V
C3 1
0
nF
C3 1
0
nF
C439 0.
1u
C439 0.
1u
U5
0
MP1482 U5
0
MP1482
EN
7
FB
5
VCC
2
OUT
3
BST
1
GND
4
SS
8
COMP
6
C1 0.
1uF
C1 0.
1uF
C334 1n C334 1n
R69 1
0
K
R69 1
0
K
PL5V
NC/FB
PL5V
NC/FB
C429 0.
1u
C429 0.
1u
+ CA8
1 00 uF/16V
+ CA8
1 00 uF/16V
R46
1
0
K
_
1%
R46
1
0
K
_
1%
R2
0
1
0
K
R2
0
1
0
K
+ CA6
1 00 uF/16V
+ CA6
1 00 uF/16V
C412 0.
1u
C412 0.
1u
R31
NC/
0
R31
NC/
0
C37 0.
1uF
C37 0.
1uF
C2 1nF C2 1nF
C45
0
0.
1u
C45
0
0.
1u
C4
00
0.
1u
C4
00
0.
1u
C377 0.
1u
C377 0.
1u
R45 1
00
K
R45 1
00
K
D38
1N4
00
1
D38
1N4
00
1
C432 0.
1u
C432 0.
1u
R1
0
NC
R1
0
NC
R22 1
0
K
R22 1
0
K
C393 0.
1u
C393 0.
1u
R49
47K
_
1%
R49
47K
_
1%
C396 1
0
u
C396 1
0
u
U5 MPS1482 U5 MPS1482
IN
2
BS
1
GND
4
FB
5
COMP
6
EN
7
SS
8
SW
3
C127 0.
1u
C127 0.
1u
R4
0
5
.
6K
R4
0
5
.
6K
C473 0.
1u
C473 0.
1u
D139 4
.
1V
D139 4
.
1V
C14 1n C14 1n
+
CA7 1 00 uF/16V
+
CA7 1 00 uF/16V
C29 1nF C29 1nF
C122 0.
1u
C122 0.
1u
C378 0.
1u
C378 0.
1u
C441 0.
1u
C441 0.
1u
R2
0
3
NC/1
00
K
R2
0
3
NC/1
00
K
R44 1
0
K
R44 1
0
K
+
CA2 47
0
uF/16V
+
CA2 47
0
uF/16V
TP8TP8
1
L38
22uH
L38
22uH
C389 0.
1u
C389 0.
1u
C4
0
1
0.
1u
C4
0
1
0.
1u
R76 39K R76 39K
R39
NC/
0
R39
NC/
0
R67 4
.
7K
R67 4
.
7K
R41 1
00
K
R41 1
00
K
C452 0.
1u
C452 0.
1u
TP7TP7
1
R29 4
.
7k
R29 4
.
7k
C468 0.
1u
C468 0.
1u
R19 1
0
K
R19 1
0
K
Q411 39
0
4
Q411 39
0
4
1
2 3
C34 0.
1uF
C34 0.
1uF
C128 0.
1u
C128 0.
1u
C118 0.
1u
C118 0.
1u
C443 0.
1u
C443 0.
1u
R17
4
.
7K
R17
4
.
7K
TP9TP9
1
C41
0
NC/
0.
1u
C41
0
NC/
0.
1u
PL12V
FB
PL12V
FB
L9 22uH L9 22uH
R68 2
.
2K
R68 2
.
2K
C449 1
0
n
C449 1
0
n
+
CA54
1
00
uF/16V
+
CA54
1
00
uF/16V
C495 1
0
nF
C495 1
0
nF
C178 0.
1u
C178 0.
1u
R53
1
0
k
R53
1
0
k
C386 nc C386 nc
TP4TP4
1
C123 0.
1u
C123 0.
1u
R21
1
00
R
R21
1
00
R
R15 1
0
K
R15 1
0
K
C444 0.
1u
C444 0.
1u
C1
0
5
1n
C1
0
5
1n
U51 MP1482 U51 MP1482
EN
7
FB
5
VCC
2
OUT
3
BST
1
GND
4
SS
8
COMP
6
+
CA4
0
1
00
uF/16V
+
CA4
0
1
00
uF/16V
C4
0
7
NC/
0.
1u
C4
0
7
NC/
0.
1u
L3
22uH
L3
22uH
DD31 BAT54 DD31 BAT54
3
1 2
C4 1
0
uF
C4 1
0
uF
C385
NC/
0.
1u
C385
NC/
0.
1u
C25 1
0
uF
C25 1
0
uF
R55 4
.
7K
R55 4
.
7K
R74 11K R74 11K
R16
0
/ 22k
R16
0
/ 22k
C31 nc C31 nc
C15 1n C15 1n
C384 0.
1u
C384 0.
1u
+
CA1
0
1
00
uF/16V
+
CA1
0
1
00
uF/16V
TP11TP11
1
R57 2
.
2K
R57 2
.
2K
R178
NC/1
0
K
R178
NC/1
0
K
L2 FB L2 FB
R339 1
0
K
R339 1
0
K
CON6
CON25-J25-14
CON6
CON25-J25-14
1 2 3 4 5 6 7 8 9
1
0
11 12 13 14
R319 1k R319 1k