Yamaha RX-V667, Service Manual

Page: 109 / 144

A
1
2
3
4
5
6
7
8
9
10
B C D E F G H I J K L M N
109
DIGITAL 3/7
RX-V667/HTR-6063/RX-A700
★
All voltages are measured with a 10MΩ/V DC electronic voltmeter.
★
Components having special characteristics are marked ⚠ and must be replaced
with parts having specifications equal to those originally installed.
★ Schematic diagram is subject to change without notice.
CB61
IC64
IC64 IC64
IC63
IC62
IC65
IC65
IC61
3.4
1.7
2.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2.8
2.8
2.8
2.8
2.8
2.8
2.8
2.8
2.8
2.4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3.4
3.4
3.4
3.4
3.3 0.9
1.8
1.8
0
1.2
1.2
1.2
1.6
1.6
3.4
0
0
0
0
0
0
1.4
3.1
0
0
0
2.0
2.8
1.3
1.4
1.3
2.0
2.5
0
0
0
0
0
3.3
0.3
3.3
3.3
3.3
1.0
1.0
2.3
2.3
2.5
2.5
2.4
2.8
2.8
2.8
2.8
2.8
2.8
2.8
2.8
2.8
2.8
2.8
1.4
3.3
2.3
2.3
3.3
3.1
3.1
1.4
2.9
2.8
0
1.7
1.4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.4
0.5
0.5
0.7
1.9
1.5
1.7
2.6
3.1
1.5
1.9
0
0
0
0
1.7
1.2
0.6
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
3.4
0
0
3.2
3.4
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
3.2
3.2
0
1.6 1.6
3.3
0
3.4
2.8 2.8 2.8 3.1 3.4 3.4 3.4 3.4 3.4 3.4 3.4 2.8 2.9 2.3 2.8
0 0 0 0 0 0 0 0 0 0
1.4 1.4 1.4
3.3 2.3 2.3 2.5 2.4 3.3 3.3 1.0 1.0 3.3 3.3 2.3 2.0 2.8 1.4 1.3 2.3 3.1 3.1 3.1 0.3 0 0 1.7
POINT B XL61 (Pin 3)
B
V
DD
CE
Pin No.
1
2
3
4
5
Symbol
V
OUT
GND
CE
NC
V
DD
Description
Output Pin of Voltage Regulator
Ground Pin
Chip Enable Pin
No Connection
Input Pin
Vref
5 4
2 1
Current Limit
V
OUT
GND
IC63 : R1172H121D-T1-F
CMOS-based positive-voltage regulator IC
1
3
2
5
4 GND
V
CC
IC65 : TC7SH125FU
Bus buffer
IN A
G
OUT Y
IC62 : M12L128168A-5TG2T
2 M x 16-bit x 4 banks synchronous DRAM
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
V DD
DQ0
V
DDQ
DQ1
DQ2
DQ3
DQ4
V DDQ
DQ5
DQ6
V SSQ
V SSQ
DQ7
V
DD
LDQM
WE
CAS
RAS
CS
BA0
BA1
A 10 /AP
A 0
A
1
A
2
A 3
V
DD
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
V SS
V
SS
DQ15
V
SSQ
DQ14
DQ13
V
DDQ
DQ12
DQ11
V
SSQ
DQ10
DQ9
V DDQ
DQ8
NC
UDQM
CLK
CKE
NC
A
11
A
9
A 8
A
7
A
6
A 5
A 4
V
SS
L(U)DQM
DQ
Mode
Register
Control Logic
Column
Address
Buffer
and
Counter
Row
Address
Buffer
and
Refresh
Counter
Bank D
Row Decoder
Bank A
Bank B
Bank C
Sense Amplifier
Column Decoder
Data Control Circuit
Latch Circuit
Input and Output
Buffer
Address
Clock
Generator
CLK
CKE
Command Decoder
CS
RAS
CAS
WE
To DIGITAL 2/7
To DIGITAL 4/7
To DIGITAL 1/7
To DIGITAL 6/7
DIGITAL (1)
To DIGITAL 6/7
To DIGITAL 2/7
No replacement part available.
No replacement part available.
No replacement part available.
FPGA
FPGA