Yamaha HTR-6295, Service Manual

Page: 123 / 163

A
1
2
3
4
5
6
7
8
9
10
B C D E F G H I J K L M N
123
DIGITAL 1/7
RX-V2065/HTR-6295
SCHEMATIC DIAGRAMS
★
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.
CB95
IC96
CB97
IC97
CB96
IC95
CB84
JK82
JK81
IC80
CB81
CB87
W80
CB80
IC81
IC81
17.8
4.2
17.8
17.8 12.0
12.0
4.2
4.8
17.1
4.3
4.2
4.9
17.8
4.2
17.8
17.8 12.0
12.0
4.2
4.8
17.1
4.3
4.2
4.8
17.8
5.0
5.0
17.8
5.0
0
5.0
3.3
3.4
3.3
0
3.3
3.3
3.3
3.4
0
-5.5
0
3.3
3.3
0
3.3
0
6.1
6.1
0
-5.5
0
-3.3
6.1
0
0
0
0
12.0
-11.6
7.3
0
0
-7.2
7.3
0
-7.2
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 0 0 0
0 0 0 0
0
3.3
0
0
0
0
0
0
0
0
3.3
0
0
3.3
0
0
3.3
0
0 0 0 0 0
3.3 3.3
0 0 0 0 0
3.3 3.3 0 0 0 3.3 3.3 0 3.3 3.3
0 0 0 0 0 0 0 0 0 0 0 0 0 3.2
0
0 0
5.5 0
0
5.5
0 0 0 0
3.4
3.4
0
5.5
0
5.5
5.5
IC81 : 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
+ – + –
IC95 : CXB1442AR-T4
Cable equalizer with 2-system switching function
ADTnP
ADTnN
ACKP
ACKN
BCKP
BCKN
SEL
CE
YDTnP
YDTnN
EQ outputs
BDTnP
BDTnN
YCKP
Equalizer
Quantizer
Quantizer
Input switching
circuit
Equalizer
Input switching
circuit
Termination
resistor
Output buffer
Output buffer
n= 0, 1, 2
YCKN
REXT
EQ inputs
CMOS inputs Control Logic
Clock
Detector
Output Current
Control Circuit
Output
Termination
Detector
Output
Termination
Detector
1 2 3 4 5 6 7 8 9 10 11 12
24
25 26 27 28 29 30 31 32 33 34 35 36
SEL Vcc ADT1P ADT1N GND ADT0P ADT0N GND A
CKP
A
CKN
Vcc CE
TES
T
Vcc
BDT0N BDT0P
GND
BDT1N BDT1P
GND
BDT2N BDT2P
Vcc
REXT
YCKN
YCKP
GND
YDT0N
YDT0P
Vcc
Vcc
YDT1N
YDT1P
GND
YDT2N
YDT2P
Vcc
Vcc
ADT2N
ADT2P
GND
Vcc
Vcc
GND
BCKN
BCKP
Vcc
Vcc
37
38
39
40
41
42
43
44
45
46
47
48
23
22
21
20
19
18
17
16
15
14
13
1
2
3
4 GND
GND
EN
EN
SDAB
SDAB
SCLB
SCLB
SDAA
SDAA
SCLA
SCLA
CCA
V
CCA V
CCB
V
CCB V
CCB
pull-up
resistor
V
8
7
6
5
IC96 : PCA9517DP
Level translating I 2 C-bus repeater
3
1 8
4
6
7 2
5
V DD
CE
Pin No.
1
2, 5
3
4
6
Symbol
V
OUT
GND
CE
NC
V
DD
Description
Output Pin of Voltage Regulator
Ground Pin
Chip Enable Pin
No Connection
Input Pin
Vref
6 1
3 2,5
Current Limit
V OUT
GND
IC97 : R1172S331B-E2-F
CMOS-based positive-voltage regulator IC
IC80 : ISL83385EIBZ-T
RS-232 transmitter/Receivers
1 NC
2 C1+
3 V+
4 C1-
5 C2+
6 C2-
2
C1+
4
C1-
5
C2+
6
C2-
7
18 SHDN
Vcc
Vcc
Vcc
17
16 GND
16
GND
15
15
17
14
13
12
11
10
V-
3
V+
7
C4
5 k
ohms
5 k
ohms
0.1μF
C3
C3 (Optional connection, NOTE)
NOTE: The negative terminal of C3 can be connected to either VCC or GND.
0.1μF
V-
8 T2OUT
8
T2OUT
9 R2IN
9
R2IN
R2OUT
R1OUT
R1IN
14
R1IN
T2IN
T1IN
13
12
11
10
R2OUT
R1OUT
T2IN
T1IN
+3.3V to +5V
TTL/CMOS
LOGIC LEVELS
T1OUT
T1OUT
T1
T2
R1
R2
SHDN
18
C1
0.1μF
0.1μF
C2
0.1μF
RS-232
LEVELS
TRIGGER OUT
RS-232C
HDMI EQ
HDMI IN
(Front)
DIGITAL (3) DIGITAL (2)
(U model)
to DIGITAL (1)_CB30
Page 124 L8
to OPERATION (2)_CB453
Page 131 C4
to DIGITAL (1)_CB1
Page 128 B2