Yamaha YSP-1000 Service Manual page 66

A B C
YSP-1000
SCHEMATIC DIAGRAM (INPUT 1/2)
1
6.3
6.3 6.3 12
6.3
6.3 6.3 14
12.0
0
6.9 11
6.3 5
6.9 0 6.3
8.9 15 13
8.9
0
6
INPUT
SELECTOR
2
6.3
6.3 6.3 1
6.3
6.3 5
6.3
5.1
6.9 2
6.3 3
5.1 6.3
6.3 4 3
0
8.9 2
8.9 0
3
1.4
0.7
2.0 0.7
3.2 5.0
0
2.0
0
0
2.0
INPUT
SELECTOR
4
5
6
7
5.1
2.6
14
3.2
1 2 3 4 0.4
7 0
4.4 0.1 5.1
4.4 13 12 5 6
0
5.1
0.2
0.2 4.8 0.1
11 10 9 8
0
8 5.1
9
IC1: TC74HCU04AFEL
Hex Inverters
1A 1 14
1Y 2 13
2A 3 12
2Y 4 11
3A 5 10
3Y 6 9
GND 7 8
10
# All voltages are measured with a 10MΩ/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.
66
D E F
8
0
7
0
12.0 0 0
3.1
0
3.1
0
0 0 0
0
0
1
4
2.9 4.3
5.0
0.1 0
1.7 0 0
1.1
1.6 0.4
2.9 0
1.7 2.9 0
1.8 1.3
5.0 1.3
1.1
5.0 12.0
5.0 12.0
0
9.0
12.0
0
4.6 4.5
7.9 3.2
4.6 9.0
3.2 4.6
4.6 0.1
0 0
9.0 0
4.6 4.6
0 0
4.6 4.6
0 0
4.6 4.6
INPUT
SELECTOR
11.8
5.4
4.8 &6
C1740S (R/S)
2.4
1.8
0
24K 24K
RD35724 RD35724
IC5: µPC4570G2
IC4: TC4052BF
Analog Multiplexers/Demultiplexers Dual OP-Amp
VDD
VCC
16 OUT 1
1
13 X-COMMON
6A
–IN 1 2
+ –
I/O c O/I 12 0X
6Y
+IN 1 3
I/O c O/I 14 1X
A 10
5A 15
I/O c O/I 2X –V 4
CC
I/O c O/I 11 3X
5Y B 9
I/O c O/I 1 0Y
4A 5
I/O c O/I 1Y
6
INH
I/O c O/I 2 2Y
4Y
I/O c O/I 4 3Y
3
Y-COMMON
8 7
VSS VEE
G H
5.1 14
0 4 0
0 5 6
0 9
0
0 10
8
0 12
0
0 13
11
0 1
0
0
2
3
0 7
5.1 12.0
5.1 12.0
0
5.0
1.1
5.0 5.0
1.8 0
5.1
14
0 2.6
0.1 1
3
2.6
0
0.1 2
5.0 0.1
4 0
0 0 6
0
0 0 5 0
OSD
0 5.1
12 0
A-3 0
5.0 11
13 0
9 3.2
8
5.1
10 3.2
7 0
0
0
IC3: MAX3232CDWR IC7, 15: TC74HCT08AF
3-V TO 5.5-V MULTICHANNEL Quad 2-Input And Gate
RS-232 LINE DRIVER/RECEIVER
1A 1 14 Vcc
8 +V
CC
1B 2 13 4B
7 OUT 2 C1+ 1 16 VCC 1Y 3 12 4A
+ –
2A 4 11 4Y
6 –IN 2 V+ 2 15 GND
2B 5 10 3B
C1 3 14 DOUT1
5 +IN
2
2Y 6 9 3A
C2+ 4 13 RIN1
GND 7 8 3Y
C2 5 12 ROUT1
6 11
V DIN1
7 10
DOUT2 DIN2
RIN2 8 9 ROUT2
I J K
POINT A-3 Pin 6 of IC10
Page 63 L4
to DSP_W3
IC2: BA7611AF
Video signal switcher
IN1 1 8 V
MUTE
CTLA 2 6dB 7 V
CTLB 3 LOGIC 6 IN3
IN2 4 5 GND
IC6: NJM2585M
Wide band 3-input 1-output 3-circuit video amplifier
CH1 IN1 1
Page 63 L4
Bias
Cont1
SW Control 1 2
to DSP_W2
Cont1
Cont2
CH1 IN2
3
Bias
SW Control 2 4
Cont1
CH1 IN3 5
Bias
GND
6
+
V 1G 7
CH2 IN1 8
Bias
GND 9
CH2 IN2 10
Cont2
Bias
GND 11
CH2 IN3
12
Bias
IC16: NJM78L09A-T3
Voltage Regulator
Page 67 J5
to INPUT (1)_CB4
IC10: MB90050PF-110E1
On-Screen Display Controller
SIN
Serial input
Each block
SCLK
control
CS
REMOTE IN
VIN
YIN
CIN
HSYNCI
INPUT (2)
VSYNCI
Sync control
Video signal
FLDI
generator circuit
SYNCST
IC8, 12: NJM78M05FA HSYNCO
Voltage Regulator
VSYNCO
NTSC/PAL
signal
CSYNCO
generator
INPUT Pallete
FLDO
circuit
(4 bits 6 bits)
VBLKO
Display Memmory control
BUSY
OUTPUT
VRAM
Font ROM
(35 characters
(512 characters)
x 16 lines)
COMMON
EXS
4FSC clock
oscillation
XS Each block
circuit
FSC4O
EXD
Dot clock
oscillation
XD Each block
circuit
DCLKO
All reset
RESET
L M N
IC9: NJM2257M
Synchronous signal separator
OUT
CC
6dB 75
24 CH1 OUT
Amp Driver
23 Power Save
6dB 75
22 CH2 OUT
Amp Driver IC11: M62782GP
Voltage threshold detector
21 V + 2
SUPPLY VOLTAGE
6dB 75
20 CH3 OUT 4
Amp Driver
GND
19
R1
18 ND
OSC 5 OUTPUT
-
+ COUNTER
17 CH3 IN1 R2
Bias
1.25V
GND
16
3 2 1
15 CH3 IN2
Cont2
N.C. SUB GND
Bias
(GND)
14 GND
GND 1 5 OUTPUT
13 CH3 IN3
2
Bias SUB
(GND)
SUPPLY
4
N.C. 3
VOLTAGE
V IN
V
OUT
GND
VOUT
Analog
switch YOUT
COUT
FLDI 1 36 PO3
VSYNCI 2 35 PO2
HSYNCI 3 34 DCOL5
DCOL5 to DCOL0
Output control VCC 4 33 DCOL4
DB
VSS 5 32 DCOL3
MB90050
DH
EXS 6 31 DCOL2
XS 7 30 DCOL1
FSC4O 8 29 DCOL0
VSYNCO 9 28 DCLKO
HSYNCO 10 27 DB
CSYNCO 11 26 DH
Font RAM
(8 characters) VBLKO 12 25 RESET
PO3
PO2
Port control
PO1
PO0