Yamaha RX-V1067 Service Manual page 131

A B C
DIGITAL 5/8
1
CB93
2
3
4
5
0
0
6
0
0
0
0
0
0
0
0
7
8
9
CB94
10
D E F
VIDEO AUX
HDMI IN
0
0
0
0
0
0
0
0
0
0
IC91
0
0
0
Page 127 L1
to DIGITAL (1)_CB8
G H
DIGITAL (3)
DIGITAL (2)
IC981
0
0
0
IC91: PCA9517DP
Level translating I
SDAA 3
SCLA
2
V
EN 5
0
0
5.5 0
I J K
RS-232C
CB981
IC981: TRS3221ECPWR
3 V to 5.5 V single channel RS-232 line driver/receiver
with ±15 kV IEC ESD protection
EN
C1+
V+
C1-
C2+
C2-
V-
RIN
0
Page 132 A3
3.3
to DIGITAL (1)_CB901
3.3
IC94: TMDS141RHAR
2
C-bus repeater HDMI switch
V V
CCA CCB
VSADJ 30
1 8
OE 6
7
PRE
6 SDAB V CC
R
INT
RX2 2
TMDS TMDS
Receiver Driver
w/EQ
1
Rx2
7 SCLB V CC
CCB
R
INT
pull-up RX1 39
resistor
TMDS TMDS
Receiver Driver
w/EQ
38
4 RX1
V CC
GND
R
INT
RX0 36
TMDS TMDS
Receiver Driver
w/EQ
RX0 35
V CC
R
INT
RXC 33
TMDS TMDS
Receiver Driver
w/EQ
32
RXC
RSCL 29
RSDA
28
I2CEN 5
OVS 25
★ 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.
L M N
RX-V1067/HTR-8063/RX-A1000
1 16 FORCEOFF 11 13
DIN DOUT
2 15 V
CC
3 14 GND
16
FORCEOFF
10
4 13 DOUT
INVALID
Auto-Powerdown
12
FORCEON
5 12 FORCEON
DIN
6 11
10 9 8
7 INVALID ROUT
RIN
1
8 9 ROUT
EN
IC95: RP130Q331D-TR-F
Voltage regulator
V DD 4 3 V OUT
9 TX2
Vref
Current Limit
10 CE 1 2 GND
Tx2
12
TX1
Pin No. Symbol Description
1 CE Chip Enable ("H" Active)
13
TX1 2 GND Ground Pin
3 V Output Pin
OUT
4 V Input Pin
DD
15 TX0
16 TX0
18 TXC
19
TXC
22 TSCL
23 TSDA
● 電圧は、内部抵抗 10MΩの電圧計で測定したものです。
● 印のある部品は、安全性確保部品を示しています。部品の交換が必要な場合、
パーツリストに記載されている部品を使用してください。
● 本回路図は標準回路図です。改良のため予告なく変更することがあります。
131