Yamaha DV-C6280, Service Manual

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A B C D E F G H
1
2
3
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I J K
7
8
DVD-C996/DV-C6280
■
SCHEMATIC DIAGRAM (MAIN P.C.B. (3/3))
* All voltage are measured with a 10M
Ω
/V DC electric volt meter.
* Components having special characteristics are marked
Z
and
must be replaced with parts having specifications equal to those
originally installed.
* Schematic diagram is subject to change without notice.
D2SBA20 NJM7809FA PQ05RD11 TC74VHCT08AF
14
7
1
8
MM1443XJBE TC74HC4052AF
TC74HC4053AF (EL)
BA7660FS-E2
TC74HC595AF
16
8
1
9
M5294P
1
8
16
2SA1037K (Q, R, S)
C
E
B
1SS355
MA8056-M
RB051L-40
Anode
Cathode
RLZ5.1A
RLZ27.0C 1N4002S
Anode
Cathode
2SB544 (E, F, G)
2SD400 (E, F)
B
C
E
B
C
E
2SA933S (Q, R)
+
–
D4SBS4
+
–
1: OUTPUT
2: COMMON
3: INPUT
3 2
1
1: VIN
2: VO
3: GND
4: VC
4
1
PQ1CG21H2F
1
5
M51951BHP
3
2
1
1 : VCC
2 : GND
3 : OUT
S-80820ANNP PQ12DZ5U
5 1
1: VIN
2: VC
3: VO
4: NC
5: GND
1
2
3 4
34
17
1
18
VIDEO SELECTOR
AMP
POWER SUPPLY
+ 5V
REGULATOR
+ 2.6V
REGULATOR
RESET SIGNAL GENERATOR
±
7V
TRACKING
REGULATOR
+ 9V
REGULATOR
4.1
2.7
3.7
2.5
4.9
0
0
0
0 0
2.5
4.8
4.9 4.8
0
0
0
0
0
0
0
0
0
0
4.9
0
4.2
4.2
-7.2 -15.6
7.2 14.6
13.9
-14.9
0
0
0
0
0
1.2 7.2
13.9
14.6
-15.6
-7.2
4.8
1.3
0
14.2
9.0
0
4.8 13.7
14.3
-25.9
-20.2
-25.9
0
-26.5
~
~
-29.2
-15.4
-15.6
14.6
-0.2 -0.2
0
5.3
2.6
2.6
0
2.7
0
7.2
3.7
3.7
AC 7.2V
A
C
5.9V
AC 25.4V
AC 3.7V
0
1.2
5.3
2.7
5.3
0
7.2 4.9 7.2
0
11.9 14.4 14.4
0
4.9
4.9
0
-1.0
0
3.1
11.9
11.9
3.0
5.7
0
11.3
4.9
3.0
0
1.7
4.2
0
4.2
11.3
11.1
0
0
0.7
0.7
0
0
0
0
0
0
4.9
4.9
3.0
0
0
0
1.0
0
0
4.9
2.8
2.6
CIRCUIT CHANGES BY MARKET.
CM (4)
IC288 : TC74HC4053AF(EL)
Triple 2-Channel Multiplexer/Demultiplexer
16
VDD
LOGIC LEVEL
CONVER
TER
12 OX
7
VEE
6 INH
OUT C IN
13
IX OUT C IN
2
OY OUT C IN
1 IY OUT C IN
5 OZ OUT C IN
3
IZ OUT C IN
4 Z-COMMON
15
14
X-COMMON
Y-COMMON
9
C
10
B
11 A
8
VSS
INHIBIT
(Pin 6)
L
L
L
L
L
L
L
L
H
CONTROL INPUTS “ON” CHANNEL
0X (Pin 12), 0Y (Pin 2), 0Z (Pin 5)
1X (Pin 13), 1Y (Pin 1), 1Z (Pin 3)
0X, 0Y, 0Z
1X, 0Y, 0Z
0X, 1Y, 0Z
1X, 1Y, 0Z
0X, 0Y, 1Z
1X, 0Y, 1Z
0X, 1Y, 1Z
1X, 1Y, 1Z
NOTE
C
(Pin 9)
L
L
L
L
H
H
H
H
*
B
(Pin 10)
L
L
H
H
L
L
H
H
*
A
(Pin 11)
L
H
L
H
L
H
L
H
*
* Don’t Care
IC206 : TC74HC4052AF
Analog Multiplexers/Demultiplexers
16
VDD
6
INHIBIT
10 A
9
B
8 VSS
7
VEE
12 X0
14 X1
15 X2
11
X3
1
Y0
5
Y1
2
Y2
4
Y3
LEVEL
CONVERTER
BINARY TO 1-OF-4
DECODER WITH INHIBIT
SW
SW
SW
SW
SW
SW
SW
SW
13 X
3
Y
INHIBIT
0
0
0
0
1
B
0
0
1
1
X A
0
1
0
1
X
0x, 0y
1x, 1y
2x, 2y
3x, 3y
NONE
VCC E– C+ NC
OUTPUT
(+5V) DELAY
RESET OUT
BAL. ADJ.
GND
ON/OFF
E– C– NC –VCC
DELA
Y
CIRCUIT
REFERENCE
REGULATOR
PROTECTION
ON/OFF
CONTROL
REFERENCE
IN +
+
CURRENT
CONTROL CURRENT
CONTROL
16 15 12 7
9
10
3 2 4
6
11
8
1
14 13
5
OUTPUT
(–5V)
CURRENT
CONTROL
IC204 : M5290P
Constant-Voltage Tracking Supply with Reset
IC289 : BA7660FS-E2
3 Channel 75
Ω
Driver
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
MUTE
INA
GND
INB
GND
N.C.
INC
GND
VCC
OUTA1
OUTA2
OUTB1
OUTB2
N.C.
OUTC1
OUTC2
6dB 75
Ω
6dB 75
Ω
6dB 75
Ω
IC287 : MM1443XJBE
Video Selector Amp
IC201 : TC74VHC08AF
Quad 2 Input AND
A1
B1
A2
V
DD
B4
1
2
3
4 11
Y1 A4
Y4
12
13
14
B2
Y2
B3
A3
5
6
7
V
SS
Y3 8
9
10
64
TUN—V
E1—V
E2—V
EXT—V
TUN—L
E1—L
E2—L
EXT—L
TUN—R
E1—R
E2—R
EXT—R
BIAS
MUTE
SDA
SCL
V OUT1
V OUT2
V OUT3
L OUT1
L OUT2
L OUT3
R OUT1
R OUT2
R OUT3
PORT1
PORT2
FS
GND1 GND2
VCC1 VCC2
11
15
13
21
22
23
25
26
27
29
30
31
9
7
12
14
16
20
6
8
10
24
5
3
1
28
32
33
19 34
4 2
SW1
SW2
SW3
SW4
SW5
SW6
SW7
SW8
SW9
BIAS
I
2
C
LOGIC
BUF
75‰
DRIVE 6dB
6dB
0.12dB
0.12dB
0,2,4,6dB
0,2,4,6dB
0,2,4,6dB
0,2,4,6dB
75‰
DRIVE
BUF
600‰
DRIVE
600‰
DRIVE
BUF
600‰
DRIVE
600‰
DRIVE
IC207 : M51951BHP
Reset Signal Generator
1.25V
R1
R2
3
1
2 OUT
GND
VCC
IC209 : S-80820ANNP
Reset Signal Generator
VDD
VSS
OUT
1
VREF
4
2
DC INPUT (VIN) DC OUTPUT (VO)
ON/OFF CONTROL (VC)
GND
2
5
3 1
I C
IC286 : PQ12DZ5U
+12V Regulator
IC203 : PQ1CG21H2F
+2.6V Regulator
V IN
COM
ON/OFF
O ADJ
V OUT
OVER CURRENT
PROTECTION
CIRCUIT
OVER HEAT
PROTECTION
CIRCUIT
SOFT
START
PWM
COMP.
VOLTAGE
REGULATOR
ON/OFF
CIRCUIT
ERROR
AMP.
S
R F/F OSCILLATOR
VREF
1
3
4
5
2
Q
P63
K-6
P63
A-3