44
BDP-LX55
1
2
3
4
A
B
C
D
E
F
1
2
3
4
10. SCHEMATIC DIAGRAM
10.1 MAIN BOARD ASSY (1/15) : POWER SOURCE (Sheet No.2)
A
1/15
100MA(M
a
x)
close to DC/DC
Intern
a
l MCU Use U2
Extern
a
l MCU Use R7
+5V
146MA
FOR VFD USE
1
3
5MA FOR BD
5
8
MA(BD)
1 .1 V
POWER
close to IC
RESET
CI RCU I T
E
B
2
2N
3
904
C
1
VCC R/R to Q
3
.b
5.000V 0.772V
4.5
3
2V 0.700V
3
.
88
5V 0.600V
3
.2
3
7V 0.500V
3
2.6V
STANDBY MODE
STANDBY MODE
RESET_
OPWRSB
EN
VCC
3
.
3
V_STBY
-24V
-24V
3
.
3
V
-24V_D
+12V_D
+12V
VCC
3
.
3
V_STBY
VCC
+12V_D
+12V
1.2V
+12V
VCC
VCC_D
VCC
VCC_D
1.1V
M
M
RESET_
7
OPW
7
OPWRSB
7
R7
NC/0
R7
NC/0
R
3
04
NC/
33
K
R
3
04
NC/
33
K
C447
N
C
/1000pF/
50V/
N
P
0
C447
N
C
/1000pF/
50V/
N
P
0
R15
NC/100K
R15
NC/100K
C75
N
C
/1000pF/
5
0V/
N
P0
C75
N
C
/1000pF/
5
0V/
N
P0
R
3
0
3
3
.
3
K
R
3
0
3
3
.
3
K
U12
P_AO4
8
0
3
U12
P_AO4
8
0
3
S1
1
G1
2
S2
3
G2
4
D2
5
D2
6
D1
7
D1
8
C5
4
8
100pF/
5
0V/
N
P0
C5
4
8
100pF/
5
0V/
N
P0
C26
NC/1
0
0
p
F
/5
0
V
/NP
0
C26
NC/1
0
0
p
F
/5
0
V
/NP
0
Q214
NC/P_AO
3
401A
Q214
NC/P_AO
3
401A
G
D
S
C4
3
6
N
C
/1000pF/
50V/
N
P0
C4
3
6
N
C
/1000pF/
50V/
N
P0
C95
N
C
/1000pF/
50V/
N
P
0
C95
N
C
/1000pF/
50V/
N
P
0
C42
8
N
C
/1
00pF/
50V/
NP0
C42
8
N
C
/1
00pF/
50V/
NP0
C106
N
C
/1000pF/
5
0V/
N
P0
C106
N
C
/1000pF/
5
0V/
N
P0
C295
NC
C295
NC
R962
NC/0
R962
NC/0
-24V
-24V
C44
8
N
C
/100pF/
50V/
N
P0
C44
8
N
C
/100pF/
50V/
N
P0
C
3
01
100N
F
/16V/
Y
5V
C
3
01
100N
F
/16V/
Y
5V
ZD
3
BZX79C2.7
ZD
3
BZX79C2.7
C
3
1
3
100N
F/
16V/
Y
5V
C
3
1
3
100N
F/
16V/
Y
5V
C512
NC/
10pF/
50V/
NP0
C512
NC/
10pF/
50V/
NP0
C6
C6
10pF/
50V/
NP0
Q6
NPN_
3
DG
3
904M
Q6
NPN_
3
DG
3
904M
FB71
3
10ohm/2A
C454
0.
1
u
F/
16V/
X
7R
C454
0.
1
u
F/
16V/
X
7R
C
3
16
N
C
/100pF/
50V/
N
P0
C
3
16
N
C
/100pF/
50V/
N
P0
C107
N
C
/1000pF/
5
0V/
N
P0
C107
N
C
/1000pF/
5
0V/
N
P0
C522
33
pF/
50V/
NP0
C522
33
pF/
50V/
NP0
Q5
NPN_
3
DG
3
904M
Q5
NPN_
3
DG
3
904M
C7
N
C
/100pF/
50V/
NP0
C7
N
C
/100pF/
50V/
NP0
C
C
C520
NC/
33
pF/
50V/
NP0
C520
NC/
33
pF/
50V/
NP0
R
3
01
100
R
3
01
100
GND
3
GND
3
C19
3
100pF/
50V/
N
P0
C19
3
100pF/
50V/
N
P0
C
8
5
N
C
/1000pF/
50V/
N
P
0
C
8
5
N
C
/1000pF/
50V/
N
P
0
C517
N
C
/1000pF/
50V/
N
P
0
C517
N
C
/1000pF/
50V/
N
P
0
C4
38
33
pF/
50V/
NP0
C4
38
33
pF/
50V/
NP0
XP1
7PIN/2.5mm
1
1
2
2
3
3
4
4
5
5
6
6
7
7
TP1
TP1
+12V
+12V
C456
33
pF/
50V/
NP0
C456
33
pF/
50V/
NP0
R96
3
NC/0
R96
3
NC/0
C52
3
C52
3
N
C
/1000pF/
50V/
N
P0
C
3
90
10
u
F/
10V/
Y
5V
C
3
90
10
u
F/
10V/
Y
5V
C
3
1
8
10pF/
50V/
NP0
C
3
1
8
10pF/
50V/
NP0
Q15
NPN_
3
DG
3
904M
Q15
NPN_
3
DG
3
904M
C1
3
0
NC/
33
pF/
50V/
NP0
C1
3
0
NC/
33
pF/
50V/
NP0
ZD1
BZX79C27
ZD1
BZX79C27
C
3
2
3
100N
F/
25V/
Y
5V
C
3
2
3
100N
F/
25V/
Y
5V
+
220
u
F/
10V
CE27
+
220
u
F/
10V
CE27
R
3
20
4.7K
R
3
20
4.7K
VCC
VCC
R294
1K
R294
1K
C451
NC/
1
00pF/
50V/
N
P0
C451
NC/
1
00pF/
50V/
N
P0
R
3
00
15K/1%
R
3
00
15K/1%
R22
0OHM
R22
0OHM
C455
100pF/
50V/
N
P
0
C455
100pF/
50V/
N
P
0
R29
3
10K
R29
3
10K
C225
N
C
/1000pF/
5
0V/
N
P0
C225
N
C
/1000pF/
5
0V/
N
P0
C519
N
C
/1000pF/
50V/
N
P
0
C519
N
C
/1000pF/
50V/
N
P
0
C50
8
N
C
/100pF/
50V/
N
P0
C50
8
N
C
/100pF/
50V/
N
P0
C25
10
u
F/
10V/
Y
5V
C25
10
u
F/
10V/
Y
5V
GND1
GND1
C510
N
C
/1000pF/
50V/
N
P
0
C510
N
C
/1000pF/
50V/
N
P
0
C445
NC/
33
pF/
50V/
NP0
C445
NC/
33
pF/
50V/
NP0
+
CE206
1000
u
F/
10V
+
CE206
1000
u
F/
10V
R
3
02
2.7K
R
3
02
2.7K
C544
0.
1UF/
50V/
NP0
C544
0.
1UF/
50V/
NP0
U2
G9091-
33
0T11U
SOT-25/SMD
U2
G9091-
33
0T11U
SOT-25/SMD
VIN
1
GND
2
EN
3
NC
4
VOUT
5
R41
1K
R41
1K
R292
100K
R292
100K
R
3
05
20K
R
3
05
20K
C429
2.
2
u
F/
10V/
Y
5V
C429
2.
2
u
F/
10V/
Y
5V
C45
8
0.
1
u
F/
16V/
X
7R
C45
8
0.
1
u
F/
16V/
X
7R
C41
8
C41
8
N
C
/1000pF/
50V/
N
P0
C559
NC/
33
pF/
50V/
NP0
C559
NC/
33
pF/
50V/
NP0
C4
3
5
C4
3
5
N
C
/1000pF/
50V/
N
P
0
C4
3
7
N
C
/100pF/
50V/
NP0
C4
3
7
N
C
/100pF/
50V/
NP0
VCC1
VCC1
C446
NC/
33
pF/
50V/
NP0
C446
NC/
33
pF/
50V/
NP0
C
3
21
NC/
1
00pF/
50V/
N
P0
C
3
21
NC/
1
00pF/
50V/
N
P0
Q206
NPN_
3
DG
3
904M
Q206
NPN_
3
DG
3
904M
R291
20K
R291
20K
C459
10pF/
50V/
NP0
C459
10pF/
50V/
NP0
C29
8
100pF/
50V/
N
P0
C29
8
100pF/
50V/
N
P0
GND2
GND2
C299
100pF/
50V/
N
P0
C299
100pF/
50V/
N
P0
C426
22UF/
16V/
Y
5V
C426
22UF/
16V/
Y
5V
C521
NC/
10pF/
50V/
NP0
C521
NC/
10pF/
50V/
NP0
M
a
in Bo
a
rd Circ
u
it Di
a
gr
a
m:Power So
u
rce
FB
33
33
-KLN501-NTX
E
CN50
3
Therefore, when repl
a
cing, be s
u
re to
u
se p
a
rts of identic
a
l design
a
tion.
When ordering service p
a
rts, be s
u
re to refer to "EXPLODED VIEWS
a
nd PARTS LIST" or "PCB
The
>
m
a
rk fo
u
nd on some component p
a
rts indic
a
tes the import
a
nce of the s
a
fety f
a
ctor of the