Yamaha YHT-S300 Service Manual page 85

A B C
HDMI
1
CB1
0
0
2
0 0
0
0 0
3 0.6
4
5
6
7
8
IC1: SiI9233ACTU
HDMI receiver
CEC_D
CEC_A CEC
DSDA0
DSDA1
Serial HDPC
DSDA2 HDCP Embedded
Host Engine
DSDA3 Registers HDCP Keys
Interface
DSCL0
DSCL1 (DDC)
DSCL2
HPD0
DSCL3 EDID
SRAM Hot Plug HPD1
NVRAM
Controller HPD2
Serial HPD3
9 CSDA
Host
CSCL
Interface RPI
Configuration
CI2CA (Local)
Registers and Status
and State Registers INT
Machine
R0XC+
R0XC-
R0X0+
Video Processing
R0X0-
R0X1+
R0X1-
Video
R0X2+ Color
R0X2- ODCK
HDCP Deep
Space IC2: SiI9134CTU
Unmask Color Video Q[35:0]
R0XC+ Converter
Output DE
R0XC-
Format HSYNC HDMI transmitter
R0X0+
R0X0- Up/Down VSYNC
R0X1+
R0X1- Sampling EVNODD
R0X2+
R0X2-
HDMI Auto Video Configuration
Receiver A/V Split HDMI
RESET#
R0XC+ Decode
Mux
R0XC- Audio Processing CSDA
CI2CA
R0X0+ CSCL
R0X0- Slave
Audio Output
R0X1+ Audio Clock SPDIF
R0X1- VSYNC
S/PDIF Video
R0X2+ Regeneration HSYNC
Output Data
R0X2- SCK/DCLK IDCK
Capture
Audio APLL WS DE
I 2 S/ Logic/DE
R0XC+ HDCP SD[3:0] D[35:0]
SCDT DSD Generator
R0XC-
Logic Unmask DR[3:0]
10 R0X0+ Output
R0X0- DR[3:0]
R0X1+ Auto
R0X1-
Audio/ MUTEOUT S/PDIF
R0X2+ MCLK
Exception XTALIN
R0X2-
XTALOUT WS
SCK
MCLK
SD[3:0]
DL[3:0]
SCDT
DR[3:0]
R0PWR5V
R1PWR5V
R2PWR5V
R3PWR5V
Reset
RESET# Logic
D E F
HDMI IN
CB2
0 0
0 0
0 0 0 0
0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0.6 0 0 0.6
3.4
1.2
3.4
3.4 0
1.6 0
1.7 0
0
0
3.4 0
E
HDMI RECEIVER
1.2 0
0.3
0
3.1
3.4
0
3.1 1.3
2.3
2.3
2.3
2.3
3.1 2.3
2.3
0 2.3
0 2.3
3.4 2.3
2.5 3.4
2.5
1.3
2.5 2.3
0.9 2.3
IC1
2.3
3.5 2.3
5.0 2.3
0 No replacement part available. 2.3
0.6 2.3
0 サービス部品供給なし 2.3
0 2.3
0 0.3
0.6 0
0
0
0 0.3
IC4: TC74VHC541FT
Octal bus buffer
IC3, 8: NJM2867F3-05
G1 1
Low dropout voltage regulator
A1 2
INT HPD
V 5 4 V
IN OUT
A2 3
Control 1
Thermal
E-DDC DSCL Protection
Registers Master DSDA A3 4
Bandgap
and
HDCP
Configuration HDCP Keys Reference
Logic Encryption
EEPROM
Engine
A4 5
EXT_SWING
YCbCr to RGB
Tx0 A5 6
Color Space XOR HDMI 1.3
Tx1
Converter/ Mask TMDS
Tx2 GND 2
4:2:2 to 4:4:4 Core
Converter TxC
Audio
A6 7
Capture
Logic
A7 8
A8 9
GND 10
G H I
TV
HDMI OUT
CB3 CB4
0
0 0
4.9
0 0
0 0
0 3.4
0 3.4
0
3.4
0
0
1.8 0
2.2 HDMI TRANSMITTER 0
2.2 0
2.2
0
2.2 0
2.2 0
2.2 0
IC2 3.4
2.2
2.2 0
1.8
1.8
0 0
3.4 0
2.2 0
2.2 0
2.2 0
2.2 0
2.2 0
2.2 0
2.2 0
2.2 0
2.2 0.3
No replacement part available.
サービス部品供給なし
IC6: PQ018EZ01ZP
IC5: R1172S121D-E2-F
Voltage regulator
Voltage regulator
DC input
20 Vcc
1
V V (Vin)
DD 6 1 OUT
19 G2
IC
18
Y1
5
17 Vref
Y2
GND
Current Limit
CE GND
3 2,5
16 Y3
15 Y4
Pin No. Symbol Description
14 Y5 1 VOUT Output Pin of Voltage Regulator
2, 5 GND Ground Pin
3 CE Chip Enable Pin
13
Y6
4 NC No Connection
6 VDD Input Pin
12 Y7
11 Y8
J K
POINT E XL1 (Pin 5 of IC1)
0
0
3.4
3.3
0 3.4
3.3
4.9 3.3
3.3
3.3
3.3
3.3
3.4
3.4 7.1
0 IC3
5.1
3.4
4.9 5.1
1.9
3.3
1.7
1.6
3.4
REGULATOR 3.4
3.4
3.4
3.4
3.4
3.4
IC8
3.4
0
0 0
0 0
0 0
0 0
0
0
0 0
0 0
0 0
0 0
3.4 3.4
0.4
0.4
3.4
0
IC6
1.8 1.8
0.2
REGULATOR
0
3.4
0
3.4
0 0
1.3
3.4
1.3 3.4
DC output
3
(Vo)
ON/OFF control
2
(Vc)
★ 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
SR-300/NS-BR300/NS-P705/NS-B380
POINT F XL2 (Pin 83 of IC7)
1.9
3.4
3.4
3.4
3.4
3.4
3.4
3.3 3.4
3.3 3.4
0
0
CEC CONTROLLER
3.4
0
3.4
0
3.4
3.4
3.4
0
3.4
3.4
IC7
0
3.4
3.4
3.4
0
F
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
CB5
0
0
0
0
0
0
0
0
0
0
0
0
0
3.4
3.4
3.4
3.4
2.5
2.5
2.5
3.4
0
3.4
Page 82 L7
0
3.4
3.4 to MAIN_CB311
3.4
0
3.4
0
1.8
5.1
0
3.4
0
3.4
3.4
0
3.4
0
CB7
3.4
3.4
3.4
0
3.4 Writing port
0
3.4
0
3.4
W1
3.4
3.4
0
0
0
7.0
Page 83 K6
to POWER (1)_CB706
● 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ございます。
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