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74LVC245
DSP BOARD: U1002, U1003, U1014
74VHC245
KEYBOARD: U209
1
2
3
4
5
6
7
8
9
10
DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
20
19
18
17
16
15
14
13
12
11
VCC
G
B1
B2
B3
B4
B5
B6
B7
B8
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(11)
(19)
(18)
(17)
(16)
(15)
(14)
(13)
(12)
OE
CK
D0
1D
C1
EN
D1
D2
D3
D4
D5
D6
D7
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
74LVC574
DSP BOARD: U1008, U1009
SCL/CCLK
SDA/CDIN
VD
AOUT1
LRCK
SCLK
SDIN1
SDOUT
SERIAL
AUDIO
DATA
INTERFACE
CONTROL PORT
DIGITAL
FILTERS
WITH
DE-EMPHASIS
ANALOG
LOW
PASS
AND
OUTPUT
STAGE
VA
AOUT2
AINL+
AINL-
SDIN2
MCLK
AOUT3
AOUT4
AINR+
AINR-
LEFT ADC
SDIN3
MUTEC
AD0/CS
RST
FILT
AOUT5
AOUT6
DIGITAL FILTERS
VL
RIGHT ADC
DAC #1
DAC #2
DAC #3
DAC #4
DAC #5
DAC #6
CLOCK MANAGER
MUTE CONTROL
DIGITAL VOLUME
DIGITAL VOLUME
DIGITAL VOLUME
DIGITAL VOLUME
DIGITAL VOLUME
DIGITAL VOLUME
DGND
AGND
CS4228
DSP BOARD: U1021
W27C020
DSP BOARD: U1007
Q0
Q7
CE
OE
A0
CONTROL
OUTPUT
BUFFER
CORE
ARRAY
DECODER
PGM
VCC
GND
VPP
A17
31
22
24
74HCU04
DSP BOARD: U1006 & U1016
1A
1Y
2A
2Y
3A
3Y
GND
1
2
3
4
5
6
7
14
13
12
11
10
9
8
6A
V
CC
6Y
5A
5Y
4A
4Y
Содержание T752
Страница 2: ...2 SAFETY INFORMATION ...
Страница 13: ...11 PCB LAYOUT AUDIO BOARD COMPONENT SIDE AUDIO BOARD COPPER SIDE ...
Страница 15: ...13 DSP BOARD COPPER SIDE DSP BOARD COMPONENT SIDE ...
Страница 16: ...14 FRONT CENTER AMPLIFIER BOARD ...
Страница 17: ...15 SURROUND AMPLIFIER BOARD ...
Страница 18: ...16 KEY BOARD COMPONENT SIDE KEY BOARD COPPER SIDE ...
Страница 19: ...17 MAIN BOARD ...
Страница 20: ...18 MULTI CHANNEL BOARD ...
Страница 21: ...19 SECONDARY POWER SWITCH LED BOARD POWER SUPPLY BOARD STANDBY ...
Страница 22: ...20 PRE OUT BOARD ...
Страница 23: ...21 SPEAKER TERMINAL BOARD TRIGGER BOARD VIDEO 6 BOARD ...
Страница 24: ...22 S VIDEO BOARD COMPOSITE VIDEO BOARD COMPONENT SIDE COPPER SIDE ...
Страница 62: ...60 NOTES ...
Страница 63: ...60 SERVICE MANUAL T 752 AV SURROUND SOUND RECEIVER NAD ELECTRONICS LTD LONDON NAD 2002 ...