Yamaha HTR-5280 - AV Receiver - 5.1 Channel, Service Manual

Page: 51 / 75

A
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B C D E F G H I J K L
RX-V800/RX-V800RDS/HTR-5280/DSP-AX8
★ All voltage are measured with a 10MΩ /V DC electric 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.
E-64/J-60
SCHEMATIC DIAGRAM (DSP)
Point 1
Pin 1 of IC501
DSP
IC502: MSM514260C-60JS
4Mbit DRAM
IC509: NJM2904M
Dual OP-Amp
Timing
Generator
I/O
Controller
Output
Buffers
Input
Buffers
Input
Buffers
Output
Buffers
I/O
Controller
Column Decoders
RAS
Refresh
Control Clock
14
WE
13
9
9
LCAS
29
UCAS
A0~A8
28
VCC
20
VSS
21
Sense Amplifiers
I/O
Selector
Memory
Cells
OE
27
DQ9~DQ16
Column
Address
Buffers
Internal
Addess
Counter
Row
Address
Buffers
On Chip
VBB Generater
Row
Deco-
ders
Word
Drivers
9
9
16 16
8
8
8
8
8
8
DQ1~DQ8
8
8
IC505: PQ025EZ5MZP
Regulator
1
Vin
3
Vo
2 Vc
5
GND
IC506: µ PC29M33T-E1
Voltage Regulator
3
OUTPUT
1 INPUT
2 GND
Safety Drive
Limiter
Excessive Electric
Current Protection
Sudden Current
Protection
Starter Circuit
Driver
Standard Voltage
Overheat Protection
Amp.
IC514: AK4527VQ
24bit CODEC
Format
Converter
ADC
LIN+
39
MCLK
6 LRCK
4
BICK
10
DAUX
1 SDOS
9 SDTO
6
SDTI1
7
SDTI2
8
SDTI3
HPF
Audio
I/F
LIN-
ADC HPF
DAC
LOUT1
DATT LPF MCLK
LRCK
BICK
6DOUT
SDIN1
SDIN2
SDIN3
DAC
ROUT1
DATT LPF
DAC
LOUT2
DATT LPF
DAC
ROUT2
DATT LPF
DAC
LOUT3
DATT LPF
DAC
ROUT3
DATT LPF
30
29
RIN+
RIN-
32
31
27
28
25
26
23
24
IC507, IC513: TC74HC00AF
IC510, IC511: TC74HCU04AF
Quad 2-Input Nand Gate
Vcc 14
4B 13
4A 12
4Y 11
3B 10
3A 9
3Y 8
1A 1
1B 2
1Y 3
2A 4
2B 5
2Y 6
GND 7
IC508: TC74VHCT08AF
Quad 2-Input And Gate
Vcc 14
4B 13
4A 12
4Y 11
3B 10
3A 9
3Y 8
1A 1
1B 2
1Y 3
2A 4
2B 5
2Y 6
GND 7
De-emphasis
Soft Mute
Serial Input
Interface
De-emphasis
Soft Mute
Control Register Clock DMder
LRCK
DIF0 DIF1 DIF2 DVDD DVSS AVDD AVSS
De-emphasis
Control
DEM0 DEM1
BICK
8X
Interpolator
Modul at or
Modul at or
SCF
SCF
8X
Interpolator
SDATA
PD
SMUTE
DFS
CS
25
P/S
CDTI
17
VREFH
16
VREFL
28
CKS2
27
CKS1
26
CKS0
3
MCLK CCLK
AOUTL+
BVSS
VCOM
AOUTL-
AOUTR+
AOUTR-
7
12 13 14 10 1 2 18 19 11
5
6
8
9
4
20
21
22
23
24
15
IC520: AK4393-VF-E2
D/A Converter
Q1
Q2 Q3
Q9 Q8
Q4
INPUTS
OUTPUT
V–
–
+
Q6
Q5
Q10
Q11
Q12
Q7
Q13
– +
OUT
1
–IN
1
–V
CC
+V
CC
OUT
2
1
2
3
4 5
+IN
1
–IN
2
+IN
2
–+
6
7
8
IC515~519, IC522: µ PC4570G2
Dual OP-Amp
E-62/J-58
to FUNC (1)
D1
LEVEL CONVERT & SIGNAL DETECT
PHONO EQ
D/A CONVERTER
CODEC
REGULATOR
DIGITAL OUT INHIBIT
DUTY
CORRECTOR
0
0
5.0
0
0
5.0
4.0
4.9
0
4.0
4.9
0
4.0
4.9
0
4.0
4.9
0
3.3
3.3
5.0
4.9
4.9
4.9
0
3.3
3.3
0
4.9
4.9
4.9
0
4.9
0.5
0.5
0.5
0.5
4.9
0
1.5
1.5
1.5
3.1
1.7
1.0
1.7
~
~
4.9
0
0.7
0.7
0.7
0.7
0
0.7
0.7
0.7
0.5
2.1
2.1
~
2.0
~
~
~
~
0
4.7 4.7 2.5
0
2.5
0
3.3
0
2.5 4.9
3.3 4.9
4.9
0
3.3
~ ~
0.4
~ ~
1.7
~
1.0
~ ~
3.3
0
1.7 3.1 3.1 2.1 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.5 3.3
0
1.5 1.5 1.5 1.5
0 0 0
0.5
0
2.5
0.4
0
0
3.3
0
4.8
~
0
4.8
0
0
4.0
0
4.0
4.0
0
2.5
0
0
0
0
0
0
0
0
0 0
0
0
4.9
2.6
3.6
4.9
4.9
0
3.6
4.9
0
0
4.9
0
0
0
0.4
0
0
0
5.0
0
0
5.0
0
0
5.0
0
0
0
0 0
0
0
5.0
3.1
3.1
0.4
0
3.1
3.1
2.6
2.6
0
4.9
0
3.3 3.3 2.2
0 0
3.3
0
0.9 3.3
1.7
1.7
0
3.3
3.3
3.3 3.3
0 0 0
~
~
3.3
0
0 0
4.0 1.6 1.6
0
2.5
3.3
0
0
0
3.3
3.3
3.3
2.5
0
0.5
0.5
0.5
0
0
0
0
0
0
1.6
1.6
1.6
0
0
~
~
~
3.3
~
0
3.3
3.3
0
0
~
0
~
~
3.3
0
1.6
3.3
1.6
~
~
0
0
3.3
0
0
3.0
0
0
0
3.3
3.3
0
0
0
0
0
0
0
5.0
0
0
0
0
0
0
-11.3
0
0
-11.3 0
0
-11.3
0
0
0
11.9
0
0
0
-11.9
0
0
0
1.6
1.6
~
~
~
~
0
0
1.6
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
0 0
5.0
0
5.0 1.6
0
5.0
5.0 2.5
0
5.0
0
5.0
0
3.3 5.0 5.0
0 0 0
0 0 0
-11.3
0
0 -11.3
0
0 0
0 0
0 0
0 0 0
-11.3
0
0 -11.3
0
0 0
0 0
0 0
0 0 0 -11.3
0
0 -11.3
0
0 0
0 0
0 0
0
0
0
0
0
-11.3
0
0
-11.9
0
0
0
11.9
-11.3
0
0
0
0
0
-11.3
0
0
-11.9
0
0
0
11.9
-11.3
2.5
2.5
11.9
11.9
2.5
2.5
2.5
2.5
5.0
2.5
5.0
2.5
2.5
2.5
0
0
2.5
5.0
2.5
2.5
5.0
0
2.5
0
2.5
2.5
-11.9
-11.9
2.5
2.5
2.5
2.5
1
DIGITAL IN
MAIN L
FRONT L
REAR L
CENTER
4 6
4
5
14
3
1
2
7
5
6
1
2
3
8
3
2
4
1
5
6
7
9
10
8
12
14
17
13
11
4 5
14
7
6
3
1 12
2
13
9 10
8
11 9
10
8
11
1
12
2 13
4
14
5
6
3
7
1
2
3
6
5
4
7
6
5
4
7
6
5
4
2
3
1
4
2
3
1
4
5
6
7
8
5
6
7
8
8
1
2
3 8
1
2
3 8
7
5
6 8
1
2
3
4
8
9
7
10
3
5
4
6
2
1
11
13
12
14
12
13
11
9
10
8
1000/6.3
1000/6.3
470/6.3 470/6.3
1000/6.3
1000/6.3
1000/6.3
1000/6.3
2.7K
2.7K
2.7K
2.7K
2.7K
2.7K
470P
470P
470P
470P
470P
470P
1.2K
1.2K
1.2K
1.2K
1.2K
1.6K