Yamaha Digital Sound Projector HTY-750, Service Manual

Page: 77 / 99

JK1
CB1
IC1 IC1
IC1 IC1
IC1 IC1
IC4
IC5
IC2
IC2
IC8
IC7
IC9
IC7
IC7
IC7
IC10
IC6
CB8
IC5
IC4
IC4
CB3
W5 CB801
CB4
W6
IC11
CB7
IC901
CB903
W991
CB902
CB901
IC801
IC801
JK801
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-600/HTY-760
77
★ All voltages are measured with a 10M Ω /V DC electronic voltmeter.
★
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.
INPUT 1/2
A-1
5.8
5.8
5.8
5.8
0
11.1
0
3.3
11.1
11.1 11.1
5.8
5.8
5.8
5.8
5.8
5.8
5.8
11.1
0 0 0
0
0
11.1
11.1 11.8
0
5.8
5.1
6.4
8.3
8.3
6.4
5.7 5.8
5.8
2.8
0
2.7 3.3
0.2
0
5.1
4.4
0
5.1
5.0 0.2
0 4.4
0
3.2
3.3
0
0
3.3
3.3 0
3.3
7.8
7.8
-5.5
10.3
0
10.8
10.8
11.8
10.8
0
3.3
5.6
0 0
-5.5
-5.5
5.1
10.9
4.9
4.6
6.4
0
4.9
0
0
0
0
4.9
1.2
4.8
0
0
4.9
5.1
0
4.1
4.1 0.2
3.1
3.1
0
0
-24.1
3.1
-11.1
-12.2
-11.1
3.1
-12.5
-12.2
3.1
-20.7
-20.7
3.1
-20.7
-12.5
-11.0
-20.7
-20.7
-22.3
-14.1
-15.8
-15.8
-11.0
-15.8
-17.5
3.1
-22.3
-22.3
3.1
-22.3
-22.3
3.1
-22.3
-22.3
-22.3
-22.3
-22.3 -22.4 -22.4 -22.4
-22.4 -22.4 -22.4 -22.4 -22.4 -22.4 -22.4 -22.4 -22.4 -24.1
-12.3
-20.5
3.1
-20.5
-20.5
-20.7
-12.5
-12.5
-11.0
-12.2
-12.5
-11.1
3.1
1.4
0
3.1
3.1
1.4
0
3.1
-17.0
-22.4
-22.4 -22.4 -22.4 -22.4 -22.4 -22.4 -22.4 -22.4 -22.4 -22.4 -22.4
-22.3 -22.3 -22.3
-17.5 -15.8 -11.0 -15.8 -15.8 -14.1 -22.3 -20.7 -20.7
-11.0
-12.5 -20.7 -19.0 -19.0 -14.2
-17.4
-17.4 -11.0 -17.4 -14.2 -15.8 -19.0 -15.6 -22.3 -10.9 -14.2
-20.7 -20.5
-20.7
-12.5 -12.3
-12.5 -11.0
-12.2 -11.1
-17.0
-19.0
-14.2 -17.4 -17.4 -11.0 -17.4 -14.2 -15.8 -19.0 -15.6 -22.3 -10.9 -14.2
3.1
-20.7
-17.0
4.1
0
0
5.6
0
0
0 5.0
0 0
3.3
5.1
0.4
0
0
0.7
10.6
5.6
5.6
0
0.1
1.8
5.0
5.1
0
2.6
2.2
0
5.1
5.1
0
0
10.6
11.1
5.1
0
3.3
0
0
5.1
3.3
3.3
5.1
3.3
3.3
3.3 5.1
5.6
0
3.3
3.8
5.0
5.0
1.8
0
0
0
5.0 2.5
0
5.0
5.0
0
1.9 1.8
5.0 5.0
5.0
0
0 0
0
5.7
5.8
5.1 6.4
8.3
8.3
6.3
ANALOG IN
DIGITAL IN
SUBWOOFER OUT
52
Display
controller
Serial
receive
circuit
Digit
output
circuit
Clock
generator
DIG11/
SEG42
51 DIG12/
SEG41
50 DIG13/
SEG40
49 DIG14/
SEG39
48 DIG15/
SEG38
47 DIG16/
SEG37
46 DIG17/
SEG36
45 SEG35
XOUT 6
Vcc1 8
Vcc2 18
Vss 5
Vp 64
XIN 7
CS
SCK 3
SDATA 4
RESET 1
SEG00 44
9 SEG34
SEG26 17
19 SEG25 Segment
output
circuit
Display code
RAM
(8-bit x 60)
CGROM
(35-bit x 166)
CGROM
(35-bit x 16)
code
select
Code
write
Code/
command
control
circuit
DIG00 63
53 DIG10
IC901 : M66003-0131FP-R
18 digit 5 x 7 segment VFD controller/driver
2 data
timing
clock
dot data
write
scan pulse
Segment/
Digit
select/
output
circuit
DIN1 DOUT1
RIN1 ROUT1
DIN2 DOUT2
RIN2 ROUT2
11
10
12
9
14
7
13
8
IC6 : MAX3232CDWR
3-V to 5.5-V multi-channel 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
IC5, 801 : NJM2068MD-TE2
Dual operational amplifier
OUT
1
OUT
2
–IN
1
+IN
1
+IN
2
-IN
2
–V
CC
+V
CC 1
2
3
4
8
7
6
5
+ – + –
1
2
3
4 -V
8
7
6
5
Output A
+V
Non-Inverting
Input A
-DC Voltage Supply
+DC Voltage
Supply
Output B
Inverting
Input B
Non-Inverting
Input B
Inverting
Input A + -
+ -
IC2 : NJM3404AM-TE1
Single-supply dual operational amplifier
IC7 : 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
IC1 : TC74HCU04AFEL
Hex inverters
VCC
6A
5A
4A
6Y
5Y
4Y GND
3Y
3A
2A
1A
2Y
1Y
1
2
3
4
5
6
7
14
13
12
11
10
9
8
IC4 : TC4052BF
Analog multiplexer/demultiplexer
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
IC8 : MB90050PF-G-118-E1
OSD controller
IC8 : MB90050PF-G-119-E1
OSD controller
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
Palette
(4 bits
→ 6 bits)
Display Memory control
Font RAM
(8 characters)
Font ROM
(512 characters)
VRAM
(35 characters
× 16 lines)
4FSC clock
oscillation
circuit
Dot clock
oscillation
circuit
Port control
Each block
Each block
All reset
Each block
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
Y
OUT
TESTI2 YIN AV
SS2
CIN AV
CC2
COUT AV
SS1
V
OUT
AV
CC1
VIN TESTI1
13 14 15 16 17 18 19 20 21 22 23 24
FLDO
SYNCST
CS
SCLK
SIN
B
USY
XD
EXD V
SS
V
CC 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
Palette
(4 bits
→
6 bits)
Display Memory control
Font RAM
(8 characters)
Font ROM
(512 characters)
VRAM
(35 characters
×
16 lines)
4FSC clock
oscillation
circuit
Dot clock
oscillation
circuit
Port control
Each block
Each block
All reset
Each block
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
Y
OUT
TESTI2 YIN AV
SS2
CIN AV
CC2
COUT AV
SS1
V
OUT
AV
CC1
VIN TESTI1
13 14 15 16 17 18 19 20 21 22 23 24
FLDO
SYNCST
CS
SCLK
SIN
B
USY
XD
EXD V
SS
V
CC
PO0 PO1
MB90050
IC10, 12 : NJM78M05FA
3-terminal positive voltage regulator
IN
OUT
GND
POINT A-1 XL1 (Pin 6 of IC8)
IC11 : NJM2388F63
Low dropout voltage regulator with ON/OFF control
ON/OFF
control
Over Voltage
Protection
Bandgap
Reference
V
IN 1
4
3
Cont
GND
V
OUT
Over Current
Protection Thermal
Protection
2
RS232C DRIVER
INPUT (2)
INPUT (3)
INPUT (5)
INPUT (4)
FL DRIVER
AMP
OSD
REGULATOR
INPUT SELECTOR
AUX (U, C, T, K, A, B, G, E, F, L, V models)
DVD (J model)
DVD (U, C, T, K, A, B, G, E, F, L, V models)
DIGITAL
OUT
COAXIAL
OPTICAL
AUX (J model)
VCR (U, C, T, K, A, B, G, E, F, L, V models)
VIDEO (J model)
TV/STB (U, C, T, K, A, B, G, E, F, L, V models)
TV/TUNER (J model)
VOLUME
+
INPUT
STANDBY/ON
VOLUME
-
Key detection for A/D port
AUDIO
INPUT
OUT
+ 1.2 k
0.165 - 0.495
13 - 38
INPUT
–
0
0 - 0.165
0 - 13
VOLUME-
Ohm
V
A/D value (3.3 V=255)
KEY0 (138 pin)
KEY1 (139 pin)
Destination for A/D port
Pull-up resistance 10 k-ohms
R71(INPUT P.C.B.) [ohm]
DEST [V]
A/D value (3.3 V=255)
Destination
39 k
2.475 - 2.805
191 - 217
U, C
91 k
2.805 - 3.135
217 - 242
T, A, B, G, E, F, L
(YSP-600)
24 k
2.145 - 2.475
166 - 191
K, V
15 k
1.185 - 2.145
92 - 166
B, G, E, F
(HTY-760)
–
3.135 - 3.3
242 - 255
J
to DSP_CB204
Page 75 K4
to INPUT (1)_W506
Page 78 L5
to INPUT (1)_CB505
Page 78 L3
to DSP_CB205
Writing port
INTELLIBEAM
MIC
Page 75 K6
to INPUT (1)_W509
Page 78 L4
to INPUT (1)_W508
Page 78 L1
to HDMI_CB5
Page 79 N10