Yamaha RX-V2500, Service Manual

Page: 81 / 119

A
1
2
3
4
5
6
7
8
9
10
B C D E F G H I J K L M N
RX-V2500/DSP-AX2500
SCHEMATIC DIAGRAM (CONTROL 2/2)
81
★
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.
0
0
0
0 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
-4.9
0
4.9
0
0
0
0
0
0
0
0
0
0
0
0
0
-4.9
0
0
0
0
0
0
0
-4.9
0
4.9
0
0
4.9
0
0
0
0
0
0
0
0
0
0
0
0
3.0
0
0
0
3.0
1.5
1.5
0
0
0
0
0
0
0
0
0
2.5
2.6
2.6
2.6
2.6
2.6
0
0
0
0
1
2.5
4.9
0
0
0
2.6
0
0 0 0
0
4.9
-4.9
0
0
0
0
0
0
0
0
0
0
0
0
-4.9
4.9
5.1
5.1
5.1
0
-4.9
-4.9
-4.9
4.4
0
0
4.9
4.9
4.9
0
0
0
0
-4.9
0.1
0
-4.9
4.9
4.9
1.4
0.1
2.2
0
0
4.9
4.9
4.9
4.9
-4.9
1.4
0.8
0
0
0
0
4.9
5.1
5.0 0
-4.9
2.2
2.5
0
4.9
0.1
0.1
0
2.5
1.9
3.1
1.8
2.5
4.9
1.5
0.6
2.2
1.2
0
0.9
1.4
0.9
4.9
4.9
4.9
4.3
0.8
1.4
4.9
4.9
0.9
-0.5
0
4.3
4.3
-0.5
1.4
0.9
0.6 0.6
0
0
-0.4
-0.4
-1.4
0
-4.9
-4.9
0
0
0
0
0
5.0
0
4.9
4.9
4.9
4.9
4.9
4.0
0
0
1.8 6.0 7.4
2.5
4.9 5.6 5.6 5.6
0
5.7 5.7
0
0
0
4.9
4.4
4.4
9.1
9.1
0
2.1
4.9
2.1
2.2 2.2 5.8
0
0
2.1
0.1 1.9 0 4.9 5.7
A-2 A-3
IC601: TA1270BF
Sync Processing System
32fH
VCO
NOSE
DET
H. AFC
35
DAC TEST
36
GND
VCX0
V
SEP
CW
MATRIX
34
SDA
33
SCL
32
Ys
31
R-Y1 IN
30
B-Y1 IN
29
Y1 IN
28
I2C GND
27
R-Y2 IN
26
B-Y2 IN
25
Y2 IN
4 3 5 6 7 8 9 10 11 12 13 14
15
APC 3.58MHz
X'tal
37
Y OUT
38
DAC2
2 1
M-X'tal 4.43MHz
X'tal
C GND C IN V-SEP SYNC
IN
SYNC
OUT
H. AFC SYNC
GND
32fH
VCO VD OUT HD OUT
SCP OUT
16
Dig GND
17 CP/HP IN
18
SYNC Vcc
(9V)
19
SW Vcc
(9V)
20
Y/G OUT
21 B-Y/B OUT
22
R-V/R OUT
23
ADRS SW
24
SW GND
48
R-Y/Cr OUT
47
B-Y/Cb OUT
46 SECAM CONT
45
1HDL CONT
44
fsc OUT
43
UV/CbCr SW
42 C Vcc
(5V)
41
DAC Vcc
(5V)
40
Y IN
39
DAC1
LPF / fsc
TRAP
CbCr / UV
SW
SECAM
CONTROL
ACC
fsc
APC
DAC2 Ys
TOF
SYSTEM
SW
P/N ID
DAC
TEST
DEMO
OFFSET
SW
TINT
SYNC
SEP
SUB
COLOR
CP/HP
IN
CHROMA
BLK
BPF
SW
SW
1H DL
CONTROL
PEDESTAL
CLAMP
DAC1
SCP
SW
H C/D V C/D
Y DL
Y DL
fsc
TRAP
SUB.
CONTRAST
YUV
→
RGB
MATRIX
Y OFFSET
SW
PEDESTAL
CLAMP
PEDESTAL
CLAMP
HI : 2ch/LOW : 24h
I2C BUS
CONTROL
IC602: TA8772AN
Delay Syatem for Color TV or VCR
Clock
CCD 1H
REF
S/H
CCD 1H
REF
S/H
Bip. Block
CCD Block
30
R-Y OUT
x1 or x1/2
Pulse
Remove
29
B-Y OUT
x1 or x1/2
Pulse
Remove
AGC
Det
27
R-Y IN
28
B-Y CLAMP
DET.
Clamp
Pulse
Ins.
Pulse
HP. GP
225fH
VCO
LPF
AGC
Clamp
26
B-Y IN
25
MODE SW2
24
MODE SW1
23
B-Y FROM
CCD
22
R-Y FROM
CCD
21
GND
20
VGG
19
VOUT1
18
VDB1
17
VDB2
16
1 2 4 3 5 6 7 8 9 10 11 12 13 14 15
VOUT2
R-Y CLAMP
DET.
R-Y TO
CCD
R-Y AGC
DET.
B-Y TO
CCD
VCC FILTER
ADJ.
S.C.P. IN B-Y AGC
DET.
PLL
DET.
CLOCK CLOCK IN VSS VIN1 VDD VIN2
Clamp
Pulse
Ins.
AGC
Det
LPF
AGC
Clamp
Ave
Bias
Det
1/225
IC603: TC90A49F
3 Line Digital Y/C Separator
IC604: BA7071F
Multimedia
15
CKIN
17
FIL
24
8 fsc
4 fsc
5
AIN
Y OUT
LINE
MEMORY
C-BPF
LINE
MEMORY
+
–
C-BPF
DYNAMIC COMB FILTER
VERTICAL EDGE
ENHANCEMENT CIRCUIT
ANALOG
THROUGH MODE
C-BPF KILLER
Y-LPF ADC
COLOR
Y DAC
C-BPF Trap C-LPF C DAC
1/2
CLAMP
PLL
11
SDA
12
SCL
13
TEST
14
KILLER
I2C BUS
20
C OUT
IC606, 607, 611: TC74HC4053AF(EL)
Analog Multiplexer/Demultiplexer
IC608, 617: AD8056AR
OP-Amp
IC609: NJM2581M
Video Amp
IC612 - 614: TC74HC4052AF
Analog Multiplexer/Demultiplexer
IC615: TC74HCU04AFEL
Hex Inverters
16
VDD
6
INHIBIT
11
15
14
9
A
C
B
8 VSS
7
VEE
12
0X
13
1X
2
0Y
1
1Y
5
0Z
3
1Z
LEVEL
CONVERTER
10
BINARY TO 1-OF-8
DECODER WITH INHIBIT
SW
SW
SW
SW
SW
SW
4
Z-COM
X-COM
Y-COM
INPUT STATES
INHIBIT
0
0
0
0
0
0
0
0
1
"ON" CHANNNEL (S)
0X, 0Y, 0Z
1X, 0Y, 0Z
0X, 1Y, 0Z
1X, 1Y, 0Z
0X, 0Y, 1Z
1X, 0Y, 1Z
0X, 1Y, 1Z
1X, 1Y, 1Z
NONE
C
0
0
0
0
1
1
1
1
X
B
0
0
1
1
0
0
1
1
X
A
0
1
0
1
0
1
0
1
X
13
VOUT1
11 VOUT2
9 VOUT3
8
GND
10
V+3
14
V+1
12
V+2
2 NEE1
4 VEE2
6
VEE3
7 PowerSave
5
VIN3
1 VIN1
3 VIN2
75
Ω
Driver
6dB
AMP
BIAS
75
Ω
Driver
6dB
AMP
BIAS
75
Ω
Driver
6dB
AMP
BIAS
REF
16
VCC
6
INH
10
A
9
B
8
GND
7
VEE
12
0X
14
1X
15
2X
11 3X
1
0Y
5
1Y
2
2Y
4
3Y
LEVEL
CONVERTER
BINARY TO 1-OF-4
DECODER WITH INHIBIT
SW
SW
SW
SW
SW
SW
SW
SW
13
X-COM
3
Y-COM
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
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
– +
OUT
1
–IN
1
–V
S
+V
S
OUT
1
2
3
4 5
+IN
1
–IN
2
+IN
2
– +
6
7
8
1
SYNC
SEPA
Vsepa
VCO
PD
COMP
2
3
4
8
7
6
5
V
IN
HD-OUT
GND
PD-OUT
Sync-OUT
VD-OUT
V
CC
HOSC-R
POINT A-2 Pin 3 of IC601 POINT A-3 Pin 12 of IC601
INPUT
SELECTOR
SEPARATOR
O
V
KEY0
KEY1
Key Input (A-D) Pull-Up Resistance 10 k-ohms
U, C, A models
0
~ 0.27
PRESET/TUNING
<
–
+ 1.2k
~ 0.75
PRESET/TUNING
>
SPEAKERS
A
+ 1.2k
~ 1.22
PRESET/TUNING
EDIT
SPEAKERS
B
+ 1.8k
~ 1.76
FM/AM
INPUT MODE
+ 2.7k
~ 2.28
MEMORY
A/B/C/D/E
+ 3.3k
~ 2.76
TUNING
MODE
PURE
DIRECT
+ 4.7k
~ 3.24
–
TONE
CONTROL
+ 8.2k
~ 3.76
–
STRAIGHT
EFFECT
+ 18.0k
~ 4.26
ZONE ON/OFF
MAIN
–
+ 47.0k
~ 4.75
ZONE ON/OFF
ZONE2
–
O
V
KEY0
KEY1
R, T, K, L, J models
0
~ 0.27
PRESET/TUNING
<
–
+ 1.2k
~ 0.75
PRESET/TUNING
>
SPEAKERS
A
+ 1.2k
~ 1.22
PRESET/TUNING
EDIT
SPEAKERS
B
+ 1.8k
~ 1.76
FM/AM
INPUT MODE
+ 2.7k
~ 2.28
MEMORY
A/B/C/D/E
+ 3.3k
~ 2.76
TUNING
MODE
PURE
DIRECT
+ 4.7k
~ 3.24
–
TONE
CONTROL
+ 8.2k
~ 3.76
–
STRAIGHT
EFFECT
+ 18.0k
~ 4.26
–
–
+ 47.0k
~ 4.75
–
–
O
V
KEY0
KEY1
B, G models
0
~ 0.27
PRESET/TUNING
<
–
+ 1.2k
~ 0.75
PRESET/TUNING
>
SPEAKERS
A
+ 1.2k
~ 1.22
PRESET/TUNING
EDIT
SPEAKERS
B
+ 1.8k
~ 1.76
FM/AM
INPUT MODE
+ 2.7k
~ 2.28
MEMORY
A/B/C/D/E
+ 3.3k
~ 2.76
TUNING
MODE
PURE
DIRECT
+ 4.7k
~ 3.24
RDS
MODE
TONE
CONTROL
+ 8.2k
~ 3.76
EON
STRAIGHT
EFFECT
+ 18.0k
~ 4.26
PTY
MODE
–
+ 47.0k
~ 4.75
PTY
START
–
O : USED / APPLICABLE
X : NOT USED
Page 74
from FUNCTION (6) – V-CNCT –
CB502_11Pin
C8