Yamaha DVD-C900 Service Manual page 66

A B
DVD-C900
Q Q
3 7 6 3 1 5 1 5 0
SWTCHING POWER SUPPLY (DL893W : V2687300)
1
P. C. B. SWITCHING POWER SUPPLY
FROM : POWER CORD
J W 1
L1
2
L2
3 1
CN1
F OR C ON T I N U E D P R OT E C T I ON
A GA I N S T R I S K OF F I R E ,
R E P L A C E ON L Y WI T H
S A ME T Y P E A N D R A T I N G OF F U S E .
F1
250V T3. 15AH
CA UT I ON
P K G 1
P S A 2 0 4 8 8 D M
R25
C5
3
R11
C11
D7
T E
L 1 3 9 4 2 2 9 6 5 1 3
14
J W 7
C17
1
8
T1
4
C20
D12
C16
C21
J W1
J W 1 8
D17
5
TK2
w w w
C22
FROM : OPERATION (1)
85
6
C
CN2
AC SW
1
(RETURN)
AC SW
3
(SEND)
CN1
J W 2
AC (L) 3
AC85~
276V
AC (N) 1
J W 3
C2
TH1
C6
RC1
J W4
D1
D3
D4
R6
D2
C9
RX1
D9
4
R10
D6
C7 PC1
Q3
E
1
D18
R14
RX5
R22
R15
E
Q2
C18
R20
D11
R21
1
D10
C28
R Z2
C27
R17
T2
RX4
J W 10
RV1
R23
J W 11
D22
RX3
L4
CX1 C30
J W1 2
C29
R16
7
R24 J W 1
5
CN3
6 1
J W 1 6
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TH1
F1
L1 L2
C2
RC1
0 125
C4
R1
C1
C3
D1
46.7
R2
R3
C5 R4
R25
D4
Q1
122 6.3 7.0 15.1
1
R11 DRI
1.06 1.8
Vin
Q 5 C Q 6.3 8.2
D23 R6
9
3 7
D7
R8
SINK
6.9
0.6 0.6
4
Z1
INH
C10 C11 0.9
B 8 D3
8.2
0
C6 GND 4
3 OCP F/B 6.3
2 6
7
0
PC1
0 -0.1 0.2 0
D8
R12
0
0.6
3
R10 C9
R9
R13
RX2 RX1
Primary side
PKG1
Note) The voltage on the primary side of the transformer (T1) is measured by using the terminal 1 of T1 as reference.
u 1 6 3
y
86
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F
2 4
8 9 9
L3
RC2
T1
9
11.9
1
11.9
R16 CX1
R14
PC1
C12
10.9
2 3
C13
RV1
RX3
R15
RC3
10
5.6
11
CX2
RX4
AC6.8
9.2
C16 2.4
C15
Z2
0
AC3.4
R17
12
4
13
5 0
C17
AC67.0
L4
C20 C21 D16
FB1
-11.9
0
AC7.5
6 14
-15.6 -15.6 -11.9
Z4
D14
D17
D15 11.9 3.3
D2 -15.6 -11.9
R5 3
11.9 3.3
2
1
Z5
AC7.6
6 3 1 5 1 5 0 8 3.3 9
4
D5 3
2 5
0 2.3
D6 C23
C24
3.7
C7
R7
D9
-3.7
7 T2 3
AC4.4
C8
1 R20
11.9
9 2
AC1.07
C28
4
R21
C27 Q2
0.1
5
0.1 RX5
Q3
D18
0.1
0
6
R22
Terminal 1
m
c o
.
G H
2
8 9 9
CN3
1 +5
2 GND
3 GND
C14
D12
4 +12
5.6 5.0
5 GND
2
1 Z3
5.6 5.0 6 —12
4
3
0
CN4
5.0
C19 D13
1 +3.3
0
2 +3.3
3 GND
4 GND
5 GND
C22
R18
6 GND
7 GND
8 +5
L5
9 +5
3.3 3.3
10 +5
2 4 9 8 2 9 9
CN5
RC4 C25 C26 R19
0
1 +5
2 GND
D19
3 GND
-25.4
-25.4
8
AC10.6
D21
4 —12
C29
C30
D22
-5.9
-19.8
R24
5 +12
D20
6 +12
0.1
AC1.3
7 —25
AC3.5
8
R23
9 AC3.5