Yamaha YSP 1000 - Digital Sound Projector Five CH..., Service Manual

Page: 66 / 92

A
1
2
3
4
5
6
7
8
9
10
B C D E F G H I J K L M N
YSP-1000
SCHEMATIC DIAGRAM (INPUT 1/2)
66
★
All voltages are measured with a 10M
Ω
/V DC electronic volt meter.
★
Components having special characteristics are marked s and must be replaced
with parts having specifications equal to those originally installed.
★
Schematic diagram is subject to change without notice.
6.3
6.3
12
14
11
15
6.3
0
0
13
6.3
12.0
6.3
0
8
5
6
7
0
6.3
6.3 6.3
6.9
8.9
6.9
8.9
6.3
6.3
1
5
2
4
6.3
5.1
5.1
3
6.3
0
6.3
0
4
3
2
1
0
6.3
6.3
6.3
6.3
8.9
6.9
8.9
2.0
5.0
2.0
0
0.7
0.7
5.0
1.1
1.4
1.7
1.7
1.1
0
3.2
0
2.0
12.0
3.1
0
0
0
0
2.9
0.1
0
1.6
2.9
2.9
1.8
5.0
5.0 12.0
5.0
0
12.0
9.0
4.6
7.9
4.6
3.2
4.6
0
9.0
4.6
0
4.6
0
4.6
4.5
3.2
9.0
4.6
0.1
0
0
4.6
0
4.6
0
4.6
12.0
0
4.3
0
0
0.4
0
0
1.3
1.3
3.1
0
0
0 0
0
4
6 5
9
10
12
13
1
2
0 0
8
0
11
0
3
14 5.1
7 0
0
0
0
0
0
0
0
0
5.1 12.0
5.1
0
12.0
5.1
0
0.2
5.1
0
4.4 13
4.4
1 3
7
14
2 4
2.6
3.2
0.4
0
5.1
11
0.2
5
9
12
0.1
10
4.8
6
5.1
8
0.1
3.3 5.4 0.1 0.1
-5.3 -5.3
5.4
0
3.3 0 -5.3 0
3.3 3.2
0.1 3.3
4.8
11.8
5.4
2.4
0
1.8
5.0
0 0 0 5.0 0 1.9 2.0
5.0
1.1
5.0
1.8
0
5.0
0
0
0
5.0
5.0
0 0
5.0 5.0
5.0
0
2.6
2.6
0.1
0
0
5.1
5.0
1
2 0.1
0.1
4
5 0
0
12
13 0
0
9
10 3.2
3.3 3.3
0
0
0
3.2
7 0
14
5.1
6
0
3
0
8
5.1
11
0
A-3
POINT A-3 Pin 6 of IC10
INPUT (2)
OSD
REMOTE IN
IC1 : TC74HCU04AFEL
Hex Inverters
1A
1Y
2Y
VCC
6A
1
2
3
4 11
2A 6Y
5A
12
13
14
3A
3Y
5Y
4A
5
6
7 4Y 8
9
10
GND
IC4 : TC4052BF
Analog Multiplexers/Demultiplexers
16
10
9
6
8 7
13
12
14
15
11
1
5
2
4
3
X-COMMON
0X
1X
2X
3X
0Y
1Y
2Y
3Y
Y-COMMON
VEE VSS
INH
B
A
VDD
LOGIC LEVEL
CONVER
TER
I/O c O/I
I/O c O/I
I/O c O/I
I/O c O/I
I/O c O/I
I/O c O/I
I/O c O/I
I/O c O/I
IC5 :
µ
PC4570G2
Dual OP-Amp
– +
OUT
1
–IN
1
–V
CC
+V
CC
OUT
2
1
2
3
4 5
+IN
1
–IN
2
+IN
2
– +
6
7
8
IC3 : MAX3232CDWR
3-V TO 5.5-V MULTICHANNEL
RS-232 LINE DRIVER/RECEIVER
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
C1+
V+
C1
C2+
C2
V
DOUT2
RIN2
VCC
GND
DOUT1
RIN1
ROUT1
DIN1
DIN2
ROUT2
IC7, 15 : TC74HCT08AF
Quad 2-Input And Gate
Vcc 14
4B 13
4A 12
4Y 11
3B 10
3A 9
3Y 8
1A 1
1B 2
1Y 3
2A 4
2B 5
2Y 6
GND 7
FLDI
VSYNCI
HSYNCI
VCC
VSS
EXS
XS
FSC4O
VSYNCO
HSYNCO
CSYNCO
VBLKO
1
2
3
4
5
6
7
8
9
10
11
12
36
35
34
33
32
31
30
29
28
27
26
25
PO3
PO2
DCOL5
DCOL4
DCOL3
DCOL2
DCOL1
DCOL0
DCLKO
DB
DH
RESET
48 47 46 45 44 43 42 41 40 39 38 37
YO
U
T
TESTI2 YIN AV
S
S
2
CIN A
V
CC2
COUT AV
S
S
1
VO
U
T
A
V
CC1
VIN TESTI1
13 14 15 16 17 18 19 20 21 22 23 24
FLDO
SYNCST
CS
SCLK
SIN
B
USY
XD
EXD
VSS
VCC
PO0 PO1
MB90050
VOUT
YOUT
COUT
PO3
PO2
PO1
PO0
SIN
SCLK
CS
VIN
YIN
CIN
VSYNCI
FLDI
SYNCST
HSYNCI
HSYNCO
VSYNCO
CSYNCO
FLDO
VBLKO
EXS
XS
FSC4O
EXD
XD
DCLKO
BUSY
RESET
DCOL5 to DCOL0
DB
DH
Serial input
control
Analog
switch
Sync control
Video signal
generator circuit
NTSC/PAL
signal
generator
circuit
Output control
Pallete
(4 bits
6 bits)
Display Memmory control
Font RAM
(8 characters)
Font ROM
(512 characters)
VRAM
(35 characters
x 16 lines)
4FSC clock
oscillation
circuit
Dot clock
oscillation
circuit
Port control
Each block
Each block
All reset
Each block
IC10 : MB90050PF-110E1
On-Screen Display Controller
IC8, 12 : NJM78M05FA
Voltage Regulator
INPUT
OUTPUT
COMMON
1
2
3
4
8
7
6
5
IN1
CTLA
CTLB
IN2
GND
IN3
V
CC
V
OUT
MUTE
LOGIC
6dB
IC2 : BA7611AF
Video signal switcher
IC6 : NJM2585M
Wide band 3-input 1-output 3-circuit video amplifier
IC9 : NJM2257M
Synchronous signal separator
+
-
1.25V
R1
R2
5
4
SUPPLY VOLTAGE
OUTPUT OSC
COUNTER
GND
1 3
SUB
2
(GND)
N.C.
OUTPUT
GND
SUPPLY
VOLTAGE
4
2
5
3
1
N.C.
SUB
(GND)
IC11 : M62782GP
Voltage threshold detector
M62782GP
V
IN
V
OUT
GND
IC16 : NJM78L09A-T3
Voltage Regulator
9
10
8
5
6
7
4
3
2
1
11
12 13
16
15
14
17
18
19
20
21
22
23
24 CH1 IN1
CH1 IN3
CH1 IN2
SW Control 1
SW Control 2
GND
CH1 OUT
GND
CH2 OUT
CH3 IN2
CH3 IN3
V
+
2
CH2 IN3
CH2 IN1
CH3 OUT
CH3 IN1
GND
CH2 IN2
GND
Power Save
75
Driver
Bias
Cont2
Cont1
Cont1
Cont2
Cont1
Cont2
6dB
Amp
Bias
Bias
Bias
Bias
Bias
Bias
Bias
75
Driver
75
Driver
Bias
6dB
Amp
6dB
Amp
GND GND
V
+
1G ND
Page 63
to DSP_W3
L4
Page 63
to DSP_W2
L4
Page 67
to INPUT (1)_CB4
J5
INPUT
SELECTOR
INPUT
SELECTOR
INPUT
SELECTOR
C1740S (R/S)
&6
24K
RD35724
24K
RD35724